KUSUMI, Harushige |
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Faculty, Department/Institute
- Faculty of Environmental and Urban Engineering Department of Civil, Environmental and Applied System Engineering
Academic status (qualification)
- Professor Apr. 1,2002
Undergraduate Degrees・University
- Kansai University Faculty of Engineering1978 Graduated
Graduate Degrees・University
- Kansai University Master's Degree Program 1980 Completed
Academic Degrees
- Doctor of Engineering Mar. 1985 Kansai University
- Master of Engineering Mar. 1980 Kansai University
Homepage Address, E-mail Address
- Homepage Address:http://wps.itc.kansai-u.ac.jp/geo-env/
Research fields
Research fields | keyword |
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Rock mechanics | |
Geotechnical engineering |
Research topics
research topic | |
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Study theme state | Joint research within Japan |
research duration | |
Research Programs | |
keyword | |
Research field | Geotechnical engineering |
Research Topics Overview |
research topic | Research and development of stability method for natural slope with preservated natural enviroment |
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Study theme state | Joint research within Japan |
research duration | |
Research Programs | |
keyword | slope,natural enviroment,stability method |
Research field | Geotechnical engineering |
Research Topics Overview |
research topic | |
---|---|
Study theme state | Joint research within Japan |
research duration | |
Research Programs | |
keyword | |
Research field | Geotechnical engineering |
Research Topics Overview |
research topic | |
---|---|
Study theme state | Joint research within Japan |
research duration | |
Research Programs | |
keyword | |
Research field | Geotechnical engineering |
Research Topics Overview |
research topic | |
---|---|
Study theme state | Joint research within Japan |
research duration | |
Research Programs | |
keyword | |
Research field | Geotechnical engineering |
Research Topics Overview |
Research Activities
- The mechanicai probrems of rock structures,the geotecnical disaster methods with considering the environmentation and the utilization and the stable maintenance of underground water have been done. In recently, to make develop these projects,the research and development in related with the numerical simulation using high accuracy and underground water management with GIS are studying.
Awards
- The award of meritoric deed in SEGJ May 23,2002(Socity of Exploration Geophysicists of Japan)
- The award of meritoric deed in SEGJ Oct. 22,2008(Socity of Exploration Geophysicists of Japan)
- Aug. 25,2010
- Nov. 9,2017
- Apr. 16,2019
- Mar. 31,2020
- Apr. 14,2020
Academic Associations
所属学会・団体名 | 役職名 (役職在任期間) |
---|---|
Japan Society of Civil Engineers | |
The Japanese Geotechnical Society | 20180701(), 20170417(2018/4/17), 20060000(2008/), 20050000(), 20030000(2006/), 19970000(1998/), 20060000(), 20090601(2011/5/27) |
The Society of Materials Science, Japan | 19960000(2002/) |
Society of Exploration Geophysicists of Japan | 200405(2008/5/) |
International Society for Soil Mechanics&Geotechnical Engineering | Committee Member on geophysical testing for geotechnical engineering(TC10)(2003/~2007/) |
International Society for Rock Mechanics | 20020000(2005/) |
Intellectual Property Rights
- (Acquired)
- application number:特許第3566219号
- application number:特願2001-222021
Joint Projects/Commissioned Projects
2007 - 2009 Domestic Joint Research
2008 - 2010 Joint research collaboration between industry and academia- The research and development of slope stability method with trees cultivation
2006 Joint research collaboration between industry and academia - The total groundwater managemant and model construction with groundwater cultivation and hydological process in urban area
2002 - 2004 Domestic Joint Research
2003 - 2005 Joint research collaboration between industry and academia
2003 Joint research collaboration between industry and academia
2007 Domestic Joint Research
2008 - 2021 From contract research companies- Research of the occurring mechanism for land slide caused by rainfall in South East Asian area.
2009 - 2010 International Joint Research
2004 - 2012 From contract research companies
2006 - 2021 Other
2005
2005 - 2021 Other
2006 - 2007 From contract research companies
2008 - 2009 Other
2009 - 2010 Other
2011 - 2012 From contract research companies
2011 - 2012 From contract research companies
2011 - 2014 From contract research companies
2012 - 2014 From contract research companies
2014 - 2017 From contract research companies
2014 - 2015 From contract research companies
2017 - 2021 Other
Research Publications
No. | Type of publication | Date of publication (Date of presentation) | Title | Type of research result | Jointly authored or single authored | Publisher and journal name | Volume number |
---|---|---|---|---|---|---|---|
1 | Papers1 | 2023/3/15~2023,03,15,,, | Construction of aProbabilistic Model Deacribing Deterioration of Pumping Wells and Its Verification Using Actual Data | Academic Journal | Co-author | ||
2 | Papers1 | 2023/3/15~2023,03,15,,, | REAL-TIME EVALUATIONS OF TUNNEL FACES AND PREDICTIONS OF GEOLOGICAL CONDITIONS AHEAD OF THE TUNNEL FACE BASED ON DRILLING DATA | Other | Co-author | SCIENCE AND TECHNOLOGY REPORTS OF KANSAI UNIVERSITY | NO.65 MARCH 2023 pp.9-15 |
3 | International academic conference8 | 2022/11/30~2022,11,30,,, | Evaluation of rock joint on construction tunnel face using convolutional neural network | Co-author | The AusRock Conference 2022 | ||
4 | Papers1 | 2022/9/20~2022,09,20,,, | DEVELOPMENT OF OPTIMAL MANAGEMENT SYSTEM FOR SHOTCRETE THICKNESS OF TUNNEL FACE USING LOGISTIC REGRESSION | Academic Journal | Co-author | ||
5 | International academic conference8 | 2022/6~2022,06,00,,, | Evaluation of natm tunnel cutting face in japan using machine learning | Co-author | |||
6 | Papers1 | 2022/1/12~2022,01,12,,, | EVALUATION OF ROCK FRACTURES WITH TUNNEL FACE USING CONVOLUTIONAL NEURAL NETWORK | Other | Co-author | ||
7 | Papers1 | 2022/1/12~2022,01,12,,, | EVALUATION OF NATM TUNNEL FACE USING MACHINE LEARNING | Other | Co-author | ||
8 | International academic conference8 | 2021/8/5~2021/8/62021,08,05,2021,08,06 | Future Prediction Curve of between Groundwater Level and Time with Deep Pumping Well Using MachineLearning | Co-author | |||
9 | International academic conference8 | 2021/8/5~2021/8/62021,08,05,2021,08,06 | Evaluation of Rock Fracture with Tunnel Face using Convolutional Neural Network | Co-author | |||
10 | Papers1 | 2021/1/14~2021,01,14,,, | APPLICATION OF CONVOLUTIONAL NEURAL NETWORK TO EVALUATION OF ROCK FRACTURES OF TUNNEL FACE | Other | Co-author | ||
11 | Papers1 | 2020/11/27~2020,11,27,,, | Study on future prediction of pumped well groundwater level associated with pumping by machine learning | Other | Co-author | ||
12 | Papers1 | 2020/1/9~2020,01,09,,, | DESIGN FOR SUPPORT PATTERNS OF NATM TUNNEL USING MACHINE LEARNING | Other | Co-author | ||
13 | Papers1 | 2019/11/1~2019,11,01,,, | Design for Support Patterns of NATM Tunnel using Machine Learning | Other | Co-author | ||
14 | Papers1 | 2019/11/1~2019,11,01,,, | A study on estimation of groundwater abundance in Echizen Ono basin by gravity exploration | Other | Co-author | ||
15 | International academic conference8 | 2017/8/29~2017,08,29,,, | Coupling Analysis of Water flow and Rock Mass Using MPS Method and DDA for Debris Flow on a Rock Slope | Other | Co-author | EIT-JGCA Joint International Symposium on Scope of Engineering Geology under Climate Change 2017 | |
16 | International academic conference8 | 2017/8/29~2017,08,29,,, | The evaluation of performance degradation of pumping well for water resource | Other | Co-author | EIT-JGCA Joint International Symposium on Scope of Engineering Geology under Climate Change 2017 | |
17 | International academic conference8 | 2016/8/30~2016,08,30,,, | Rock mass and water coupling analysis for debris flow by combining DDA and MPS | Other | Co-author | ||
18 | International academic conference8 | 2016/8/30~2016,08,30,,, | Analysis about decrease in performance of pumping well in water source and management plan in Kyoto Prefecture Minamiyamashiro region | Other | Co-author | ||
19 | International academic conference8 | 2014/10/14~2014/10/152014,10,14,2014,10,15 | Pumping simulation using 3D analysis on an aging well | Other | Co-author | ARMS8-2014 ISRM International Symposium | |
20 | International academic conference8 | 2014/8/26~2014,08,26,,, | Simulation Analysis of 3D Seepage Groundwater Flow in Fushimi-ku, Kyoto. | Other | Co-author | EIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 2014 | |
21 | International academic conference8 | 2014/8/26~2014,08,26,,, | Multi evaluations system by self-organizing maps using three geophysical prospectings. | Other | Co-author | EIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 2014 | |
22 | International academic conference8 | 2014/8/19~2014,08,19,,, | The evaluation of the poor performance of pumping wells. | Other | Co-author | 9th International Symposium in Science and Technology at Cheng Shiu University 2014 | |
23 | International academic conference8 | 2014/8/19~2014,08,19,,, | Comprehensive evaluation system regarding Self-Organizing Maps by using three sets of geophysical prospecting data of cut slopes. | Other | Co-author | Cheng Shiu University | P197 |
24 | International academic conference8 | 2013/9/13~2013/9/132013,09,13,2013,09,13 | Relation between Rock Bolt Setting and Shear Strength of Reinforced Ground by Rope Net and Rock Bolt Method | Other | Co-author | EIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 2013 | |
25 | International academic conference8 | 2013/9/13~2013/9/132013,09,13,2013,09,13 | Simulation Analysis of 3D Seepage Groundwater Flow and Making of 3D Geological Structure Model in Multilayered Ground | Other | Co-author | EIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 2013 | |
26 | Papers1 | 2013/8/21~2013/8/232013,08,21,2013,08,23 | Stability of reinforced slope with Rock Bolt and Rope Net Method | Other | Co-author | International Symposium in Science and Technology at Kansai University 2013 | pp.341 |
27 | Papers1 | 2013/8/21~2013/8/232013,08,21,2013,08,23 | Making of 3D Geological Structure Model in Multilayered Ground | Other | Co-author | International Symposium in Science and Technology at Kansai University 2013 | pp.342 |
28 | Lecture19 | 2012/12~2012,12,00,,, | The Chairman the external evaluation committee of the Global COE | Other | Single-Author | ||
29 | Papers1 | 2012/10/16~2012,10,16,,, | Soundness Evaluation of Ground Conditions Inside Decrepit Slopes by Conversion Analysis of Geophysical Data | Co-author | 2012 ISRM Regional Symposium ARMS7-The 7th Asian Rock Mechanics Symposium THE PRESENT AND FUTURE OF ROCK ENGINEERING | ||
30 | International academic conference8 | 2012/9/14~2012,09,14,,, | Multi Evaluations System of Three Geophysical Prospectings by Self-Organizing Maps | Co-author | EIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 2012 | ||
31 | International academic conference8 | 2012/9/14~2012,09,14,,, | 3D Seepage Flow Simulation of Groundwater by Divided Ground Models in Kyoto Basin | Co-author | EIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 2012 | ||
32 | International academic conference8 | 2012/9/14~2012,09,14,,, | Relation with Shear-Strength and Water Contents of Reinforced Slope by Rope-net and Rock-bolt Method | Co-author | EIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 2012 | ||
33 | International academic conference8 | 2012/9/13~2012,09,13,,, | Studying the Effects on Groundwater Levels and Water Qualities of a New Subterranean Construction Using a 3D Management Model for Groundwater in Japan | Co-author | EIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 2012 | ||
34 | International academic conference8 | 2012/8/30~2012,08,30,,, | 3D Simulation Analysis of Goundwater Seepage Flow and Thermal Movement for Energy Saving related with Aquifer Thermal Energy Storage | Other | Co-author | 7th INTERNATIONAL SYMPOSIUM IN SCIENCE and TECHNOLOGY | P264 |
35 | International academic conference8 | 2012/8/30~2012,08,30,,, | Pumping Simulation by divided Ground Models on Multi-Pumping Wells | Other | Co-author | 7th INTERNATIONAL SYMPOSIUM IN SCIENCE and TECHNOLOGY | P263 |
36 | International academic conference8 | 2012/8/30~2012,08,30,,, | Multi Evaluations Method of Two Geophysical Explorations by Self-Organizing Maps | Other | Co-author | 7th INTERNATIONAL SYMPOSIUM IN SCIENCE and TECHNOLOGY | P261-262 |
37 | International academic conference8 | 2012/8/30~2012,08,30,,, | Excavation Simulation Analysis of Twin Tunnel Construction under Thin Overburden Cover and Unconsolidated Layer | Other | Co-author | 7th INTERNATIONAL SYMPOSIUM IN SCIENCE and TECHNOLOGY | P250-251 |
38 | International academic conference8 | 2012/8/30~2012,08,30,,, | Relation with Shear Strength and Water Contents of Reinforced Decomposed Grahite Soil Slope by Rockbolt and Ropenet Method | Other | Co-author | 7th INTERNATIONAL SYMPOSIUM IN SCIENCE and TECHNOLOGY | P254-255 |
39 | Papers1 | 2011/11/24~2011,11,24,,, | 3D model of groundwater diffusion analysis and research of groundwater characterization based on field measurement in Kyoto basin | Academic Journal | Co-author | Proceedings of the 15th International Symposium on Recent Advances in Exploration Geophysics in Kyoto (RAGE2011) | pp.19-24 CD-ROM No.5 |
40 | Papers1 | 2011/10/20~2011,10,20,,, | Pumping simulations using 3D analysis on multi-pumping wells | Co-author | 12th ISRM International Congress on Rock Mechanics(Harmonising Rock Engineering and the Environment) | ||
41 | Papers1 | 2011/10/18~2011,10,18,,, | A study of the compound evaluation for geophysical explorations by self-organizing maps | Single-Author | 12th ISRM International Congress on Rock Mechanics(Harmonising Rock Engineering and the Environment) | ||
42 | 99 | 2011/9/8~2011/9/112011,09,08,2011,09,11 | Greetings from Kansai University! | Other | Single-Author | Dynamics of Traditional Research Societies in a Rapidiy Changing World | |
43 | Papers1 | 2011/8/30~2011,08,30,,, | Establishing a 3D model of groundwater advection and diffusion at Fushimi ward in Kyoto basin | Co-author | EIT-Japan Symposium 2011 on Human Security Engineering,EIT-Japan,2011 | ||
44 | Papers1 | 2011/8/30~2011,08,30,,, | Greening method of shotcrete slope blended on landscape | Co-author | EIT-Japan Symposium 2011 on Human Security Engineering,EIT-Japan,2011 | ||
45 | Papers1 | 2011/8/30~2011,08,30,,, | Compound evaluations method of some geophysical explorations by self-organizing maps | Co-author | EIT-Japan Symposium 2011 on Human Security Engineering,EIT-Japan,2011 | ||
46 | Papers1 | 2011/8/30~2011,08,30,,, | 3D seepage flow simulation of groundwater by many pumping wells in Kyoto Basin | Co-author | EIT-Japan Symposium 2011 on Human Security Engineering,EIT-Japan,2011 | ||
47 | Papers1 | 2011/8/30~2011,08,30,,, | Slope failure simulation analysis caused rainfall on road slope by DEM | Co-author | EIT-Japan Symposium 2011 on Human Security Engineering,EIT-Japan,2011 | ||
48 | Papers1 | 2011/8~2011,08,00,,, | 3D simulation of groundwater advection and diffusion in Kyoto basin | Co-author | International symposium in science and technology at Kansai University | ||
49 | Papers1 | 2011/8~2011,08,00,,, | Study on greening of shotcrete slope considering landscape and earth environment | Co-author | International Symposium in Science and Technology at Kansai University | ||
50 | Papers1 | 2011/8~2011,08,00,,, | Excavation simulation analysis of shallow tunnel in multilayered ground by DEM | Co-author | International Symposium in Science and Technology at Kansai University | ||
51 | Papers1 | 2011/8~2011,08,00,,, | Study on evaluations of some geophysical explorations by self-organizing maps | Co-author | International symposium in science and technology at Kansai University | ||
52 | Papers1 | 2011/8~2011,08,00,,, | Pumping simulations using 3D FEM analysis on multi-pumping wells | Co-author | International Symposium in Science and Technology at Kansai University | ||
53 | Papers1 | 2011/8~2011,08,00,,, | Simulation analysis of failure by rainfall on road slope using DEM | Co-author | International Symposium in Science and Technology at Kansai University | ||
54 | Papers1 | 2011/3~2011,03,00,,, | Influence on groundwater properties and pumping simulations using 3D analysis of multi-pumping wells in Kyoto basin | Academic Journal | Co-author | pp.371-381 | |
55 | Papers1 | 2011/1/14~2011,01,14,,, | A STUDY FOR THE COMPOUND EVALUATION OF GEOPHYSICAL EXPLORATIONS BY SELF-ORGANIZING MAPS | Other | Co-author | ||
56 | Papers1 | 2011/1/14~2011,01,14,,, | SIMULATION ANALYSIS OF EXCAVATION OF SHALLOW TUNNEL IN MULTILAYERED GROUND BY DEM | Other | Co-author | ||
57 | Papers1 | 2010/11/4~2010/11/52010,11,04,2010,11,05 | A trial about the evaluation of compound geophysical explorations by self-organizing maps | Monograph | Co-author | Proceedings of the 14th International Symposium on Recent Advances in Exploration Geophysics in Kyoto(RAEG2010) | 15-20 |
58 | 99 | 2010/11/4~2010/11/52010,11,04,2010,11,05 | Geo-Environmental Laboratory,Kansai University;Organazed by The 14th International Symposium on Recent Advances in Exploration Geophysics in Kyoto(RAEG2010) | ||||
59 | Papers1 | 2010/9/7~2010,09,07,,, | Excavation simulation analysis of shallow tunnel in multilayered ground by DEM | Other | Co-author | Proceedings of EIT-JSCE Symposium on Engineering for Geo-Hazards:Earthquakes and Landslides-for Surface and Subsurface Structures | Session 1: Monitoring 2 |
60 | Papers1 | 2010/9/6~2010/9/82010,09,06,2010,09,08 | Monitoring of ground condition into road decrepit slopes by seismic and electric prospecting | Other | Co-author | Proceedings of EIT-JSCE Symposium on Engineering for Geo-Hazards:Earthquakes and Landslides-for Surface and Subsurface Structures | pp.37-42 |
61 | Papers1 | 2010/9/6~2010/9/82010,09,06,2010,09,08 | The study of greening shotcrete considered the landscape | Other | Co-author | Proceedings of EIT-JSCE Symposium on Engineering for Geo-Hazards:Earthquakes and Landslides-for Surface and Subsurface Structures | Poster Section |
62 | Papers1 | 2010/9/6~2010/9/82010,09,06,2010,09,08 | Development of a new natural slope stability method without cutting trees | Other | Co-author | Proceedings of EIT-JSCE Symposium on Engineering for Geo-Hazards:Earthquakes and Landslides-for Surface and Subsurface Structures | Session 1: Monitoring 2 |
63 | Papers1 | 2010/9/6~2010/9/82010,09,06,2010,09,08 | Examining the effects on underground water levels of a subterranean construction using a 3D management model for underground water in Kyoto-City, Japan. | Other | Co-author | Proceedings of EIT-JSCE Symposium on Engineering for Geo-Hazards:Earthquakes and Landslides-for Surface and Subsurface Structures | Session 2: Management 2 |
64 | Papers1 | 2010/9/6~2010/9/82010,09,06,2010,09,08 | A study about the improvement of the interpretative accuracy of compound geophysical explorations by self-organizing maps | Other | Co-author | Proceedings of EIT-JSCE Symposium on Engineering for Geo-Hazards:Earthquakes and Landslides-for Surface and Subsurface Structures | Session 2: Management 2 |
65 | Papers1 | 2010/8/23~2010/8/252010,08,23,2010,08,25 | 3D Seepage Flow Analysis using FEM to Examine the Effects on Underground Water Levels of Subterranean Construction in Kyoto-City, Japan. | Other | Co-author | Proceedings of the Fifth International Symposium in Science and Technolory at Cheng Shiu University 2010 | pp.113-118 |
66 | Papers1 | 2010/8/23~2010/8/252010,08,23,2010,08,25 | An experimental study on natural slope stability method for environment and landscape | Other | Co-author | International Symposium in Science and Technology at Cheng Shiu University 2010 | |
67 | Papers1 | 2010/8/23~2010/8/252010,08,23,2010,08,25 | Excavation simulation analysis of shallow tunnel in sandy ground by DEM | Other | Co-author | International Symposium in Science and Technology at Cheng Shiu University 2010 | |
68 | Papers1 | 2010/5~2010,05,00,,, | Soundness evaluation of decrepit slopes with the conversion analysis of geophysical data | Academic Journal | Co-author | International Journal of the JCRM | Volume6, Number1,pp.7-11 |
69 | Papers1 | 2010/3~2010,03,00,,, | Development of the Continuous Wave Ground Penetrating Radar and It’s Application to Road Slopes Investigations | Academic Journal | Co-author | ||
70 | Survey report22 | 2010/3~2010,03,00,,, | Slope Aging/Deterioration Survey by VLF-EM Method | Academic Journal | Co-author | ||
71 | Papers1 | 2010/1/7~2010,01,07,,, | SIMULATION ANALYSIS OF EXCAVATION OF SHALLOW TUNNEL IN MULTILAYERED GROUND BY DEM | Co-author | |||
72 | Research report21 | 2009/11/23~2009/11/252009,11,23,2009,11,25 | Evaluation for physical property of the repeated 3-D electric survey on a slope | Academic Journal | Co-author | ||
73 | Papers1 | 2009/10/30~2009,10,30,,, | Engineering estimation method of decrepit slope by compound survey | Co-author | Proceedings of EUROCK'2009-Rock Engineering in Difficult Ground Conditions - Soft Rocks and Karst | 557-600 | |
74 | Papers1 | 2009/9/7~2009/9/82009,09,07,2009,09,08 | Simulation analysis of excavation of shallow tunnel in multilayered ground by DEM | Co-author | Proceedings of EIT-JSCE Joint International Symposium 2009 | ||
75 | Papers1 | 2009/9/7~2009/9/82009,09,07,2009,09,08 | Monitoring method for the aging slopeby geophysical explorations | Co-author | Proceedings of EIT-JSCE Joint International Symposium 2009, EIT-JSCE | ||
76 | Papers1 | 2009/9/7~2009/9/82009,09,07,2009,09,08 | Establishing the 3D model of the underground water management system at southern Kyoto-city | Co-author | Proceedings of EIT-JSCE Joint International Symposium 2009 | ||
77 | Papers1 | 2009/9/7~2009/9/82009,09,07,2009,09,08 | Development of natural slope stability method considered environment and landscape | Co-author | Proceedings of EIT-JSCE Joint International Symposium 2009 | ||
78 | Papers1 | 2009/8/23~2009/8/252009,08,23,2009,08,25 | Experimental study of natural slope stability method using rock bolt and rope net -Effect of pressure plate- | Co-author | Proceedings of collaboration between Asian countries in Life science, Information Technology and Civil Engineering, in Osaka, Japan | 160-163 | |
79 | Papers1 | 2009/8/23~2009/8/252009,08,23,2009,08,25 | Monitoring method for the aging slope by seismic method and electric prospecting | Co-author | Proceedings of collaboration between Asian countries in Life science, Information Technology and Civil Engineering, in Osaka, Japan | 164-167 | |
80 | Papers1 | 2009/8/23~2009/8/252009,08,23,2009,08,25 | Establishing the semi 3D model of ground water advection and diffusion in the southern part of Kyoto basin | Co-author | Proceedings of collaboration between Asian countries in Life science, Information Technology and Civil Engineering, in Osaka, Japan | 168-171 | |
81 | Papers1 | 2009/5/27~2009,05,27,,, | Semi 3D simulation of ground water advection and diffusion for alluvial layer in part of Kyoto basin | Co-author | Proceedings of prediction and simulation methods for geohazard mitigation,in Kyoto,Japan | 417-422 | |
82 | Papers1 | 2009/5/25~2009,05,25,,, | 2D simulation analysis of failure of rock slope with bedding planes by DEM | Co-author | Proceedings of prediction and simulation methods for geohazard mitigation,in Kyoto,Japan | 153-157 | |
83 | Papers1 | 2009/3~2009,03,00,,, | Engineering estimation method of rock masses around the tunneling root by conversion analysis using seismic velocity and electric resistivity | Single-Author | Proceedings of International Rock Mechanics Symposium on The 2nd Thai Rock 2009,Keynote Lecturer | 55-70 | |
84 | Papers1 | 2009/1/8~2009,01,08,,, | The engineering evaluation method of decrepit slope by combination of seismic velocity and elactlic resistivity | Co-author | |||
85 | Papers1 | 2009/1/8~2009,01,08,,, | Simulation analysis of discontinuity progress of stratified rock mass by DEM | Co-author | |||
86 | Research report21 | 2008/10~2008,10,00,,, | Maintenance and management of the road slopes using geophysical exploration methods | Academic Journal | Co-author | ||
87 | Papers1 | 2008/9~2008,09,00,,, | Reinforcement mechanism of slope stability method with no cutting trees | Co-author | Proceedings of EIT-JSCE Joint International Symposium in Bangkok | 228-231 | |
88 | Papers1 | 2008/9~2008,09,00,,, | 2D simulation analysis of failure of rock slope with bedding planes by DEM | Co-author | Proceedings of EIT-JSCE Joint International Symposium in Bangkok | 128-131 | |
89 | Papers1 | 2008/9~2008,09,00,,, | 2D simulation of advection diffusion on ground water flow on Joyo city in Kyoto | Co-author | Proceedings of EIT-JSCE Joint International Symposium in Bangkok | 132-135 | |
90 | Papers1 | 2008/8~2008,08,00,,, | Numerical simulation of failure behavior and crack propagation of rock slope by 3D den | Academic Journal | Co-author | ||
91 | Papers1 | 2008/1/11~2008,01,11,,, | Simulation Analysis for Deformation Behavior of Shallow Tunnel Excavation by Distinct element Method | Co-author | |||
92 | Papers1 | 2008/1/10~2008,01,10,,, | Analytical Evaluation of Slope Failure Location Using Satellite Image and statistical Analysis | Co-author | |||
93 | Papers1 | 2007/9/15~2007,09,15,,, | Monitoring of Groundwater Behavior with the Rainfall on a Rock Slope by Combination Geophysical Prospecting | Academic Journal | Co-author | ||
94 | Papers1 | 2007/9/15~2007,09,15,,, | Analytical Evaluation of Slope Failure Location Using ASTER Image Data | Academic Journal | Co-author | ||
95 | Papers1 | 2007/9/15~2007,09,15,,, | Two-Dimensional Simulation Analysis of Rock Slope Failure by DEM Using Bonding Force between Particles | Academic Journal | Co-author | ||
96 | Papers1 | 2007/9~2007,09,00,,, | Pumping Simulation using 3D Ground Water Flow Model in Kyoto | Co-author | Proceedings of EIT-JSCE Joint Seminar on Rock Engineering 2007 | ||
97 | Papers1 | 2007/7~2007,07,00,,, | 3D simulation analysis of failure of rock slope with crack propagation by DEM | Co-author | Proceedings of the 11th Congress of The International Society for Rock Mechanics in Lisbon | 525-528 | |
98 | Papers1 | 2007/7~2007,07,00,,, | Engineering estimation method of rock masses on the tunnelling root by conversion analysis using seismic velocity and electric resistivity | Co-author | Proceedings of the 11th Congress of The International Society for Rock Mechanics in Lisbon | 861-864 | |
99 | Papers1 | 2007/4~2007,04,00,,, | 3D simulation analysis of sliding failure of rock slope by DEM | Co-author | Proceedings of the 11th International Symposium on Recent Advances in Exploration Geophysics in Kyoto | 84-87 | |
100 | Papers1 | 2007/1~2007,01,00,,, | 3D analysis for excavation behavior of shallow tunnel by distinct element method | Co-author | |||
101 | Papers1 | 2007/1~2007,01,00,,, | 3D simulation analysis of sliding failure of rock slope by dem | Co-author | |||
102 | Papers1 | 2007/1~2007,01,00,,, | Simulation analysis about shear behavior of a three-dimensional rock joint by distinct element method | Co-author | |||
103 | Papers1 | 2006/11/8~2006,11,08,,, | Simulation analysis of toppling failure of rock slope by distinct element method using bonding theory | Co-author | Proceedings of 4th Asian Rock Mechanics Symposium ,CD-ROM | 11.2 | |
104 | Papers1 | 2006/11~2006,11,00,,, | Monitoring of groundwater behavior on a rock slope by combination geophysical prospecting | Co-author | 137-140 | ||
105 | Papers1 | 2006/11~2006,11,00,,, | Monitoring of Groundwater Behavior on a Rock Slope by Combination Geophysical Prospecting | Co-author | Proceedings of The 8th SEGJ International Symposium | 635-638 | |
106 | Papers1 | 2006/10~2006,10,00,,, | Estimation method of rock masses in tunnel construction by conversion analysis using seismic velocity and electric resistivity | Academic Journal | Co-author | ||
107 | Papers1 | 2006/7~2006,07,00,,, | Simulation analysis of seepage and consolidation with thermal energy storage system using groundwater | Co-author | Proceedings of Japan-AIT joint international symposium | pp.85-90 | |
108 | Papers1 | 2006/5/15~2006,05,15,,, | An Estimation Method of In-situ Rock Masses by Characteristic of Electric Resistivity for Jointed Rock Mass Model | Academic Journal | Co-author | Journal of the society of materials science | |
109 | Papers1 | 2006/5/15~2006,05,15,,, | Simulation analysis for shear behavior mechanism of rock joint using distinct element method | Academic Journal | Co-author | Journal of the society of materials science,Japan | |
110 | Papers1 | 2006/3/30~2006,03,30,,, | The engineering evaluation method of rock masses by combination of seismic velocity and electric resistivity | Co-author | Proceedings of the 10th International Symposium on Recent Advances in Exploration Geophysics RAEG2006 | pp.187-192 | |
111 | Papers1 | 2006/3/21~2006,03,21,,, | The Relation Between Strength of Ground Improvement and P-Wave Velocity when Using the Jumbo-Jet Special Grouting Method | In-house publication | Co-author | Technology Reports of kansai University | Vol.48,pp.71-76 |
112 | Papers1 | 2006/2~2006,02,00,,, | Geological evaluation of ground for tunnel construction by combination geophysical prospectings | Co-author | Proceedings of international symposium on underground excavation and tunnelling | pp.573-578 | |
113 | Book2 | 2005/12/20~2005,12,20,,, | Practical Question and Answers for a Basic Understanding of Landslides -Living with Slopes- | Monograph | Co-author | Japan Society of Civil Engineers | |
114 | Papers1 | 2005/12/7~2005,12,07,,, | Monitor method of landslide slope with optical fiber sensor | Co-author | |||
115 | Papers1 | 2005/11/25~2005,11,25,,, | Simulation analysis of seepage and consolidation with thrmal energy storage system using groundwater | Co-author | |||
116 | Papers1 | 2005/9/27~2005,09,27,,, | Simulation analysis of Shallow Tunnel Excavation by Distinct Element Method | Co-author | Proceedings of EIT-JAPAN-AIT2005 Seminar on Geo-Risk Engineering and Management | pp.98-100 | |
117 | Papers1 | 2005/9/27~2005,09,27,,, | Estimation method of rock masses of tunnel construction by Joint Inversion method using seismic velocity and resistivity | Co-author | Proceedings of EIT-JAPAN-AIT2005 Seminar on Geo-Risk Engineering and Management | pp.124-128 | |
118 | Papers1 | 2005/9~2005,09,00,,, | Estimation Method of Rock Masses of Tunnel Construction by Joint Inversion Method Using Seismic Velocity and Resistivity | Co-author | Proceedings of EIT-JAPAN-AIT Joint Workshop 2005 | 124-128 | |
119 | Papers1 | 2005/5/18~2005,05,18,,, | Simulation analysis of shear behavior of rock joint by distinct element method | Co-author | Proceedings of Impact of Human Activity on the Geological Environment | pp.281-286 | |
120 | Keynote address20 | 2005/3/31~2005,03,31,,, | Simuration analysis of rock mechanics and rock engineering by distinct element method | Other | Single-Author | Proceedings of Korean Society for Rock Mechanics | |
121 | Papers1 | 2005/3~2005,03,00,,, | True tri-axial test using distinct element method | Co-author | Proceedings of the 9th International Symposium on Recent Advances in Exploration Geophysics in Beijing | pp.45-49 | |
122 | Papers1 | 2005/1/7~2005,01,07,,, | Estimation method of rock masses of tunnel construction by joint inversion method using seismic velocity and resistivity | Co-author | Proceegings of the 34th Symposium on Rock Mechanics | ||
123 | Papers1 | 2005/1/7~2005,01,07,,, | SEISMIC IMAGING AHEAD OF TUNNEL FACE USING FULL WAVE INVERSION METHOD | Co-author | Proceedings of the 34th Symposium on Rock Mechanics | ||
124 | Papers1 | 2005/1~2005,01,00,,, | Estimation method of rock masses of tunnel construction by joint inversion method using seismic velocity and resistivity | Co-author | 345-350 | ||
125 | Papers1 | 2004/11~2004,11,00,,, | Simulation of earth tunnel excavation based on trap door test by distinct element method | Co-author | Proceedings of The 6th International Workshop on the Application of Geophysics to Rock Engineering | pp.68-73 | |
126 | Papers1 | 2004/11~2004,11,00,,, | Simulation analysis of shear behavior of rock joint by distinct element method | Co-author | Proceedings of the ISRM International Symposium 3rd ARMS | pp.1287-1292 | |
127 | Papers1 | 2004/11~2004,11,00,,, | Improved seismic imaging ahead of tunnel face | Co-author | Proceedings of the ISRM International Symposium 3rd ARMS | pp.251-254 | |
128 | Book2 | 2004/9~2004,09,00,,, | Pumping simulation using 3D groundwater flow model of southern-yamashiro district at kyoto basin | Co-author | Proceedings of EIT-JAPAN-AIT Workshop on Geo-Engineering in Groundwater, Land Subsidence, Exploration Geophysics and Underground Rock Engineering | ||
129 | Book2 | 2004/5~2004,05,00,,, | Application of Geophysical Methods to Engineering and Environmental Problems | Co-author | Proceedings of The Society of Exploration Geophysics of Japan | 157―198 | |
130 | Papers1 | 2004/1~2004,01,00,,, | Simulation analysis of the ground action at the time of the tunnel digging using Distinct Element Method | Co-author | |||
131 | Papers1 | 2004/1~2004,01,00,,, | Simulation analysis of the ground action at the time of the tunnel digging using Distinct Element Method | Co-author | Proceedings of 33rd Symposium of Rock Mechanics | ||
132 | Papers1 | 2004/1~2004,01,00,,, | Simulation analysis for shear behavior mechanism of rock joint using distinct element method | Co-author | Proceedings of the 33rd Symposium of Rock Mechanics | ||
133 | Papers1 | 2003/11~2003,11,00,,, | Seismic imaging ahead of tunnel face | Co-author | EIT-JAPAN-AIT Joint Workshop on Modern Computation Method In Rock Engineering | pp.33-37 | |
134 | Papers1 | 2003/9~2003,09,00,,, | Application of seismic imaging ahead of tunnel face method for rockmass with continuous fracture zone | Academic Journal | Co-author | ||
135 | Papers1 | 2003/9~2003,09,00,,, | Development of monitoring systems for rock slope by optical strain sensor | Academic Journal | Co-author | ||
136 | Papers1 | 2003/9~2003,09,00,,, | Simulation of Hopkinson effect by discrete element method | Co-author | 10th International Congress on Rock Mechanics | pp.813-pp.816 | |
137 | Papers1 | 2003/6~2003,06,00,,, | The Predictives Estimation Technique of Rock Mass and Spring Water on the Tunneling Root by Combination Survey | Academic Journal | Co-author | ||
138 | Papers1 | 2003/5~2003,05,00,,, | A Study of Elastic Waves and Hopkinson Bar Effect Using Granular Model | Academic Journal | Co-author | ||
139 | Papers1 | 2003/5~2003,05,00,,, | Preparation of Jointed Rock Mass Model Using Intact Rock Specimen and Its Characteristics of Resistivity | Academic Journal | Co-author | ||
140 | Papers1 | 2003/5~2003,05,00,,, | The Shear Strengh Formula Including Joint Aperture and Roughness for Natural Rock Joint | Academic Journal | Co-author | ||
141 | Papers1 | 2003/3~2003,03,00,,, | 3D basic rock mass structure and undergroundwater condition of Kyoto basin | Co-author | Proc. of international symposium on underground environment | pp.365-368 | |
142 | Papers1 | 2003/1~2003,01,00,,, | Several Examinations in Development of Simultaneously Measuring System for P and S Wave Velocity and Electric Resistivity of Rock Samples | Co-author | Proceedings of The 7th International Symposium on Recent Advances in Exploration Geophysics in Kyoto (RAEG2003) | 241-246 | |
143 | Papers1 | 2002/12~2002,12,00,,, | Development of Simultaneously Measuring System for P and S Wave Velocity and Electric Resistivity of Rock Samples and Investigation of Its Applicabirity | Academic Journal | Co-author | Journal of Geotechnical Engineering | No.722/3-61 pp.381-386 |
144 | Keynote address20 | 2002/11~2002,11,00,,, | Shear behavior of rock joints | Single-Author | |||
145 | Papers1 | 2002/11~2002,11,00,,, | The development of monitoring system for rock slope by optical fiber sensor | Co-author | Proc. of Eurock2002 | pp.253-260 | |
146 | Papers1 | 2002/10~2002,10,00,,, | Seismic imaging ahead of tunnel face with three component geophones | Co-author | Proc.of 72th SEG Annual meeting | CD-ROM | |
147 | Papers1 | 2002/9~2002,09,00,,, | Shear behavior of rock joint considering both of joint aperture and roughness | Co-author | Proc. of 3th Korea-Japan rock engineering symposium(ISRM regional symposium) | pp.169-176 | |
148 | Book2 | 2002/3~2002,03,00,,, | Rock Mechanics | Monograph | Co-author | ||
149 | Papers1 | 2002/2~2002,02,00,,, | Shear Behavior of Soft Rock Exposed to Alternate Dry and Wet under Constant Stress | Academic Journal | Co-author | Reprinted from Journal of The Society of Materials Science, Japan | Vol.51, No.2, pp.146-151 |
150 | Papers1 | 2002/1~2002,01,00,,, | Monitoring method of rock slope located V shape by optical fiber sensor | Co-author | |||
151 | Papers1 | 2002/1~2002,01,00,,, | Interpretation Technique of Geological Survey by Combination of Seismic Velocity and Electric Resisitvity | Co-author | Proceedings of The 6th International Symposium on Recent Advances in Exploration Geophysics in Kyoto (RAEG2002) | 47-52 | |
152 | Papers1 | 2001/10~2001,10,00,,, | Application of Several Electric Resistivities of Rock Masses for Tunnel Supporting Design | Co-author | CD-ROM | ||
153 | Papers1 | 2001/9~2001,09,00,,, | The effect of saturation and porosity given on resistivity of various rock specimens and its application for rock masses estimation method | Co-author | pp.187-194 | ||
154 | Papers1 | 2001/9~2001,09,00,,, | Development of Simultaneously Measured System for P, S Wave and Electric Resistivity of Rock Samples and its Application | Co-author | 149-151 | ||
155 | Papers1 | 2001/6~2001,06,00,,, | Seismic Imaging Technique of Looking Ahead of Tunnel Face by Use of 3 Components Receivers | Academic Journal | Co-author | Journal of Geotechnical Engineering | No.680/3-55 pp.123-129 |
156 | Papers1 | 2001/1~2001,01,00,,, | Development of Simultaneously measured system for P,S wave and electric resistivity of rock samples and its application | Co-author | 87-91 | ||
157 | Papers1 | 2000/12~2000,12,00,,, | A Method to Estimate Continuous Distribution of Strength in Improved Layer of Ground by S-Wave Reflection Method | Academic Journal | Co-author | Journal of Geotechnical Engineering | No.666/3-53 pp.333-338 |
158 | Papers1 | 2000/11~2000,11,00,,, | Characterization of Electrical Resistivity for Intact and Jointed Specimens and its Application for In Situ Rock Mass Assessment | Co-author | Proceedings of An Int. Conf. on Geotechnical&Geological Eng.(GeoEng2000) | CD-ROM | |
159 | Papers1 | 2000/6~2000,06,00,,, | Monitoring of Groundwater Behvior Caused by Rainfall Fracture Zone of Rock Slope using Electric Resisitivity Method | Co-author | Proceedings of 8th International Symposium on Landsliders | 871-876 | |
160 | Papers1 | 2000/5~2000,05,00,,, | Analysis of the Exploration Looking Ahead of Tunnel Face by Various | Co-author | Proceedings of Exploration Looking Ahead of Tunnel Face Symposium | ||
161 | Book2 | 2000/5~2000,05,00,,, | Application Manual of Geophysical Prospectings for Civil Engineering | Monograph | Co-author | The Society of Exploration Geophysicists of Japan | |
162 | Papers1 | 2000/3~2000,03,00,,, | Estimation method of aperture condition with rock joints and its application for shear equation | Co-author | proceedings of the Eurock 2000 Symposium | ||
163 | Papers1 | 2000/1~2000,01,00,,, | Characterization of Strength and Deformation Behavior of Soft Rock Exposed to Alternated Dryand Wet under Constant Stresses | Co-author | Proceedings of 30th Rock Mechanics Symposium | No.30 pp.36-42 | |
164 | Book2 | 1999/10~1999,10,00,,, | Site Investigation and Stabilization Methods for Rock Slopes | Monograph | Co-author | Japan Society for Civil Engineers | |
165 | Papers1 | 1999/9~1999,09,00,,, | Estimation Method of Aperture Condition with Rock Joint and its Application for Shear Equation | Academic Journal | Co-author | Journal of Geotechnical Engineering Japan Society of Civil Engineering | No.631/3-48 pp.505-510 |
166 | Papers1 | 1999/6~1999,06,00,,, | Simulation analysis on Geophysical Prospecting of Improved Thin Layer by S-Wave Reflection Method and its Application | Academic Journal | Co-author | Journal of Geotechnical Engineering Japan Society of Civil Engineering | No.624/3-47 pp.245-253 |
167 | Papers1 | 1999/4~1999,04,00,,, | Characterization of aperture distribution and permeability in single joints under continingpressure | Academic Journal | Co-author | Journal of the society of materials science | |
168 | Papers1 | 1999/4~1999,04,00,,, | Characterization of Aperture Distribution and Permeability in Single Joints under Confining Pressure | Academic Journal | Co-author | Reprinted from Journal of The Society of Materials Science, Japan | Vol.48, No.4, pp.341-345 |
169 | Papers1 | 1999/1~1999,01,00,,, | Application of several electric resistivity of intact rocks to field rock masses | Co-author | Proceedings of the 29th symposium of rock meachnics | pp.210-214 | |
170 | Papers1 | 1999/1~1999,01,00,,, | Observation methods of displocement on rock slope by optic strain sensor | Co-author | Proceedings of the 29th symposium of rock meachnics | pp.280-284 | |
171 | Commentary9 | 1999/1~1999,01,00,,, | On the effective factor for Stability of Sock Slope | Single-Author | Proceedings of 29th Rock Mechanics Symposium | ||
172 | Papers1 | 1998/12~1998,12,00,,, | Monitoring of Improved Thin Layer by S-Wave Reflection Method | Academic Journal | Co-author | BUTSURI-TANSA Geophysical Exploration | Vol.51 No.6 pp.688-694 |
173 | Papers1 | 1998/10~1998,10,00,,, | Shear behavior of soft rock exposed to alternate dry and wet under constant stresses. | Co-author | Proceeding of the 2nd international symposium on hard soils-soft rocks | pp.253-258 | |
174 | Papers1 | 1998/4~1998,04,00,,, | A formulation of shear strength for rock joints included two or three different asperities | Co-author | Proceeding of the 3rd international conference on mechanics of jointed and faulted rock | pp.235-242 | |
175 | Book2 | 1998/1~1998,01,00,,, | Geophyical prospecting for slope survey | Monograph | Co-author | ||
176 | Fieldwork10 | 1998~1998,00,00,,, | A Study of Underground Water Resources on South Yamashiro Area, Kyoto-Fu. | Single-Author | |||
177 | Fieldwork10 | 1998~1998,00,00,,, | Monitoring of groundwater behaviour in rock slope by electric resistivity method. | Single-Author | |||
178 | Fieldwork10 | 1998~1998,00,00,,, | Investigation of Rock Slope Damage by Earthquake and It's Countermeasure | Single-Author | |||
179 | Papers1 | 1997/10~1997,10,00,,, | Effect of structural anisotropy on deformation properties of granite under cyclic loading ISRM International Symposium on Environmental and Safety Concerns in Underground Construction 1st ARMS (Seoul) | Co-author | Proceeding of ISRM international symposium in 1st asian Rock mechanics. | pp.433-438 | |
180 | Papers1 | 1997/9~1997,09,00,,, | Effect of Structural Anisotropy on Deformation Properties of Granite under Cyclic Loading | Academic Journal | Co-author | Reprinted from Journal of the Society of Materials Science Japan | Vol.46, No.9, pp.1029-1034 |
181 | Papers1 | 1997/6~1997,06,00,,, | Relationship between apparent electric resistivity and rain fall in fracture zone of rock slope by continious measurment | Academic Journal | Co-author | Journal of Japan Society for Engineering Geology | |
182 | Papers1 | 1997/6~1997,06,00,,, | Study on new formulation of shear strength for irreqular rock joints | Co-author | Proceedings for 36th U. S. Rock Mechanics Symposium and ISRM International Symposium | pp.323-332 | |
183 | Papers1 | 1997/3~1997,03,00,,, | Damage Mechanism of Nishinomiya City High School Building due to Hyogoken-Nanbu Earthquake | Academic Journal | Co-author | Vol.45 No.3 Ser.No.470 pp.17-20 | |
184 | Papers1 | 1997/1~1997,01,00,,, | Study on shear strength for rock joints with irregular surface profile | Co-author | Proceedings of the 28th symposium of rock mechanics | pp.173-179 | |
185 | Fieldwork10 | 1997~1997,00,00,,, | A study on the prospecting methods for landslide research | Single-Author | |||
186 | Papers1 | 1996/9~1996,09,00,,, | Shear behaviour of joint roughness with two types of asperities | Co-author | Proceedings of prediction and performance in rock mechanics and rock engineering, Eurock'96 | pp.127-134 | |
187 | Fieldwork10 | 1996~1996,00,00,,, | Investigation of Earthquake damage for Structual foundation and ground at Hanshin area. | Single-Author | |||
188 | Papers1 | 1995/12~1995,12,00,,, | Influence of asperity gradient on shear strength of rock joint | Academic Journal | Co-author | Research reports of relationship between discountinuity rock mass and structurer | |
189 | Papers1 | 1995/4~1995,04,00,,, | Prospecting for Small Inclined Jacking Pipe by the Electromagnetic Method | Academic Journal | Co-author | BUTSURI-TANSA (Geophysical Exploration) | Vol.48 No.2 pp.99-106 |
190 | Research report21 | 1995/3~1995,03,00,,, | Developmental Study of Land Settlement measured system using by magnet and magnetic resistivity element | Other | Co-author | ||
191 | Research report21 | 1995/3~1995,03,00,,, | Estimation of future settlement based on real measurment values given by magnetic settlement system | In-house publication | Co-author | Research Report of ecotecnology, Institude of Technology Kansai University | |
192 | Papers1 | 1995/2~1995,02,00,,, | Study on Actual using Conditions of Groundwater Resources in Minamiyamashiro District at Kyoto Prefecture | Academic Journal | Co-author | Journal of Groundwater Hydrology | Vol.37 No.1 pp.55-67 |
193 | Papers1 | 1995/1~1995,01,00,,, | Relationship between Shear Behaviour and the Estimation of Rock Joint Surface by Statistical Method | Co-author | Proceedings the 26th Symposium of Rock Mechanics | pp.91-95 | |
194 | Papers1 | 1994/9~1994,09,00,,, | Study on Formulation of Shear Strength for Irregular Rock Joints | Academic Journal | Co-author | Journal of Geotechnical Engineering Japan Society of Civil Engineers | |
195 | Papers1 | 1994/1/20~1994/1/211994,01,20,1994,01,21 | Relationship between Estimation Method of Joint Roughness and Chracterization of Shear Strength for Rock Joint | Co-author | Proceedings of the 9th Japan Symposium on Rock Mechanics | pp.491-496 | |
196 | Papers1 | 1993/6~1993,06,00,,, | Monitoring of groundwater behaviour in rock slope by dipole-dipole electric resistivity technique. | Co-author | Proceedings of Safety and Enviroment Issues in Rock Engineering(A. A. Balkema) | ||
197 | Papers1 | 1993/6~1993,06,00,,, | On prospecting of jacking pipe by electromagnetic method | Academic Journal | Co-author | Journal of The Society of Exploration Geophysists of Japan | |
198 | Papers1 | 1993/3~1993,03,00,,, | Characterization of elastic wave velocity on various rock specimens under uniaxial and repeated stress conditions | In-house publication | Co-author | Engineering and Technology | |
199 | Papers1 | 1992/8~1992,08,00,,, | Application of Continuous Failure State Direct Shear Test on Discontinuous Rocks. | Academic Journal | Co-author | Journal of The Mining and Materials Processing Institute of Japan | |
200 | Papers1 | 1991/6~1991,06,00,,, | Dilation Properties of Regular Discontinuous during Shear. | Academic Journal | Co-author | Journal of Japan Society of Civil Engineers | |
201 | Papers1 | 1991/1~1991,01,00,,, | Application of several electlic resistivity of intact rocks to field rock masses | Co-author | 211-215 | ||
202 | Papers1 | 1989/8~1989,08,00,,, | Longitudinal Wave Velocity of Anisotropic Rocks under Biaxial Stress Loading. | Academic Journal | Co-author | Journal of The Society of Exploration Geophysists of Japan | |
203 | Papers1 | 1989/8~1989,08,00,,, | A Development of Settlement Measuring System using Magnetic Sensor and its Application. | Academic Journal | Co-author | Journal of Japan Society of Civil Engineers | |
204 | Papers1 | 1989/1~1989,01,00,,, | On Measuring Settlement by Magnetic Method at any Depth | Academic Journal | Co-author | Marine Geotechnology | Vol.8,No.1,pp.81-98 |
205 | Papers1 | 1987/2~1987,02,00,,, | Relation between Deformation Characteristics and P-Wave Velocities of Rock Specimens under Biaxial Stress Loading. | Academic Journal | Co-author | Journal of The Society of Exploration Geophysists of Japan | |
206 | Papers1 | 1985/9~1985,09,00,,, | Theoretical Study on Compaction of Sand Deposits by Blasting. | Academic Journal | Co-author | Soils and Foundation | |
207 | Papers1 | 1985/1~1985,01,00,,, | On Quickning Subsidence of Soil Bank by Blasting. | Academic Journal | Co-author | Explosion and Explosives | |
208 | Papers1 | 1984/6~1984,06,00,,, | Laboratory Test on Compaction of Sand Deposits by Blasting. | Academic Journal | Co-author | Soils and Foundation |
PapersConstruction of aProbabilistic Model Deacribing Deterioration of Pumping Wells and Its Verification Using Actual DataIn refereedAcademic JournalCo-authorKawahara Koki ;Nakano Kosuke ;Kanekiyo Hiroaki; Kitaoka Takafumi;KUSUMI Harushige2023/3/15~A probabilistic model is newly proposed for describing random deterioration of pumping wells, in consideration of application to efficient of pumping wells using a concept of asset management procedure. First,introducing a health index for quantifying specific capacity,we formulate a differential wquation describing mean deterioration of the helth index. Next, it is extended to a random differential equation, in which a Gaussian white noise is introduced for representing intensive fluctuation around the mean deterioration behavior, so that intensively random variation of the health index can be well reproduced. A probability distribution of the health index is then derived in an analytical form. Finally, the obtained probability distribution is comparred with actual data of the health index for active eight pumping wells in Joyo area, Kyoto prefecture, Japan. It is clarified that the scatter of health index of actual pumping well reproduced by the theoretically derived probability distrbution from the nrwly proposed probabilistic model.
PapersREAL-TIME EVALUATIONS OF TUNNEL FACES AND PREDICTIONS OF GEOLOGICAL CONDITIONS AHEAD OF THE TUNNEL FACE BASED ON DRILLING DATAIn refereedOtherCo-authorYasuyuki Miyajima;Sugaru Shirasagi;Harushige KusumiSCIENCE AND TECHNOLOGY REPORTS OF KANSAI UNIVERSITYNO.65 MARCH 2023 pp.9-152023/3/15~Kansai UniversityThe authors developed a system for predicting the geological conditions not just of excavated areas but also ahead of the tunnel face by processing drilling data using ordinary Kriging, a geostatistical approach, and by visualizing conditions in real time, Using autocontrolled face-drilling rigs, the authors confirmed the easy and rapid acqusition of drilling data from blast holes and rock bolt holes, along with three-dimensional coordinates. The authors deployed the system in real time to determine if pre-supports such as forepoling and facebolts would be necessary for a strongly sheared slate area at the tunnel faces of the Shin-Kuzakai Tunnel(provisional name).
International academic conferenceEvaluation of rock joint on construction tunnel face using convolutional neural networkIn refereedCo-authorKarnallisa Desmy HALIM;YUN,Yeboon;Nishio,Akinobu;KUSUMI HarushigeThe AusRock Conference 20222022/11/30~
PapersDEVELOPMENT OF OPTIMAL MANAGEMENT SYSTEM FOR SHOTCRETE THICKNESS OF TUNNEL FACE USING LOGISTIC REGRESSIONIn refereedAcademic JournalCo-authorYasuyuki MIYAJIMA;Hayato TOBE;Kei YAMASHITA;KUSUMI Harushige2022/9/20~Shotcrete is installed in tunnels to prevent rock fall disasters. It is difficult to determine the thickness of shotcrete for each face according to the geological conditions, and it is recommended to spray 3 to 5 cm depending on the support pattern. In this study, we collected the results of quantitative evaluation of the geology of the tunnel face using image analysis technology and computer jumbo drilling data,as,well as the shotcrete thickness and rock fall information of the tunnel face, and used logistic regrssion to determine the shotcrete thickness according to the geological conditions. As a result, it was found that the shotcrete thickness can be presented with an accuracy of about 75%. We also showed that logistic regression is a machine learning method without hidden layers,so it can clearly show the relationship between geological conditions and shotcrete thickness and rock fall.
Academic presentationUnrefereedOtherCo-authorSawada Masatoki;KUSUMI Harushige;YUN,Yeboon2022/9/16~
Academic presentationUnrefereedOtherCo-authorKarnallisa Desmy HALIM;YUN,Yeboon;KUSUMI Harushige2022/9/15~
PapersIn refereedAcademic JournalCo-authorIwai Hiromasa;Ohhashi Tadasi;Ono Hideo;Gotou Satosi;KUSUMI Harushige;Misima Yuitirou;Hino Takenori2022/8~
Research reportAcademic JournalCo-author Kitaoka Takafumi;Yamamoto Yuhei ;Kouchi Natsuki ;Tsujino Hiroyuki ;KUSUMI Harushige2022/7~
International academic conferenceEvaluation of natm tunnel cutting face in japan using machine learningIn refereedCo-authorKarnallisa Desmy HALIM;YUN,Yeboon;KUSUMI Harushige2022/6~ARMA
PapersOtherCo-authorNakata Masanari;Enami,Daiki;YUN,Yeboon;KUSUMI Harushige2022/5/29~
PapersOtherCo-authorKanehara Ryota;Shimizu Sota;KUSUMI Harushige2022/5/29~
Academic presentationOtherCo-authorOnishi Mio;Hirakawa Masahiro;YUN,Yeboon;KUSUMI Harushige2022/5/29~
OtherKUSUMI Harushige2022/4/6~
LectureKUSUMI Harushige2022/1/17~
PapersEVALUATION OF ROCK FRACTURES WITH TUNNEL FACE
USING CONVOLUTIONAL NEURAL NETWORKUnrefereedOtherCo-authorEnami,Daiki;YUN,Yeboon;Nishio,Akinobu;KUSUMI Harushige2022/1/12~In mountain tunnels for NATM, the rock mass rating with tunnel face is one of the most important tasks to determine the support design pattern and it is currently depended on the visual observation of experienced experts. However, the number of experts is decreasing in recent years and it is feared that it will affect tunnel construction in the future. To solve this problem, we tried to evaluate quantitatively rock fractures on tunnel face using CNN, a deep learning, with the evaluation of the 9 categories and 4 lebels of tunnel face observation style for rock fractures. In addition, we applied Grad-CAM, a visualization technique for CNN, to investigate whether CNN can actually evaluate rock fractures as a basis for decision making.
PapersEVALUATION OF NATM TUNNEL FACE USING MACHINE LEARNINGUnrefereedOtherCo-authorKarnallisa Desmy HALIM;Kaneko,Genki;YUN,Yeboon;KUSUMI Harushige2022/1/12~The determination of support patterns by field experts in NATM plays an important role in the construction of mountain tunnels. Discrepancy in judgement based on experience and bias may lead to an inconsistent evaluation method. Therefore, this research aims to realize an unbiased and standardized evaluation method by verifying the applicability of machine learning to rock evaluation. Support vector machine (SVM) is implemented to classify support patterns based on data collected from construction sites. The proposed SVM-based model shows high accuracy. Furthermore, by taking into account the current method of rock evaluation during tunnel construction, the classification accuracy further improved.
PapersIn refereedOtherCo-authorHirakawa Masahiro;YUN,Yeboon;KUSUMI Harushige2021/11/5~
LectureKUSUMI Harushige2021/10/5~
OtherKUSUMI Harushige2021/10~
International academic conferenceFuture Prediction Curve of between Groundwater Level and Time with Deep Pumping Well Using MachineLearningUnrefereedCo-authorHirakawa Masahiro;YUN,Yeboon;KUSUMI Harushige2021/8/5~2021/8/6Kansai UniversityOsaka, Japan
International academic conferenceEvaluation of Rock Fracture with Tunnel Face using Convolutional Neural NetworkUnrefereedCo-authorEnami,Daiki;YUN,Yeboon;Nishio,Akinobu;KUSUMI Harushige2021/8/5~2021/8/6Kansai UniversityOsaka, Japan
LectureKUSUMI Harushige2021/4/21~
Academic JournalKUSUMI HarushigeCONCRETE JOURNAL2021/4/1~
LectureKUSUMI Harushige2021/1/14~
PapersAPPLICATION OF CONVOLUTIONAL NEURAL NETWORK TO EVALUATION OF ROCK FRACTURES OF TUNNEL FACE In refereedOtherCo-authorEnami,Daiki;Kaneko,Genki;Nishio,Akinobu;KUSUMI Harushige2021/1/14~In mountain tunnels for New Austrian Tunneling Method, the rock mass rating is one of the most important factors to determine the tunnel support design pattern, but it is currently dependent on the visual inspection by experts. However, the number of experts is decreasing in recent years and it is feared that it will affect tunnel construction in the future. Therefore, in this research, we use convolutional neural network (CNN), a type of deep learning, to conduct a quantitative assessment of rock fractures in the tunnel face. Specifically, the image data of the tunnel face were divided into two parts, one for training and the other for validation. The CNN model is constructed by using image data of a tunnel face as input data and the evaluation scores for the fracture which is defined by the Ministry of Land, Infrastructure and Transport as output data, and then the model is evaluated with the validation data. The result shows that the agreement between the CNN predicted evaluation scores and the actual evaluation scores judged by experts is high and that CNN is applicable to the evaluation of rock fractures in the tunnel face.
PapersStudy on future prediction of pumped well groundwater level associated with pumping by machine learningIn refereedOtherCo-authorHirakawa Masahiro;KUSUMI Harushige;Fujii Takumi2020/11/27~
PapersDESIGN FOR SUPPORT PATTERNS OF NATM TUNNEL
USING MACHINE LEARNINGIn refereedOtherCo-authorKaneko,Genki;Enami,Daiki;YUN,Yeboon;KUSUMI Harushige;Nishio,Akinobu2020/1/9~At the tunnel construction site using the NATM , it is important to evaluate the cutting face of the rock
when engineers determine the support pattern (CI ~ DIII) of the tunnel. At present, the evaluation is
performed by skilled engineers according to the predetermined evaluation items, and it has not been
established as a standard evaluation method. Therefore, in this paper, we verified the applicability of
introducing machine learning for rock mass evaluation. Using some tunnel data, 4 patterns of CI ~ DII
are distinguished and the accuracy is verified. In this verification, about 2000 data were first learned and
the accuracy of the learning was verified. As a result, about 86% accuracy was obtained
PapersDesign for Support Patterns of NATM Tunnel using Machine LearningIn refereedOtherCo-authorKaneko,Genki;KUSUMI,Harushige;YUN,Yeboon;Nishio,Akinobu2019/11/1~
PapersA study on estimation of groundwater abundance in Echizen Ono basin by gravity explorationIn refereedOtherCo-authorNitta,Shinya;KUSUMI Harushige;Kaeriyama Toshiaki2019/11/1~
LectureKUSUMI Harushige2019/11/1~
International academic conferenceIn refereedOtherCo-authorYeboon Yun;Genki Kaneko;Harushige Kusumi;Akinobu Nishio;Tsutomu Kurotani3rd International Conference on Information Technology in Geo-Engineering2019/10/2~ICITG
Academic presentationUnrefereedOtherCo-authorKanekiyo Yasuaki;KUSUMI Harushige;Kubo JyunpeiJapan Society of Civil Engineers 2019 Annual Meeting2019/9/5~
Academic presentationUnrefereedOtherCo-authorKONO,Ryoto;KUSUMI,Harushige;Shimomura,Kotaro;Teraoka,KatsumiJapan Society of Civil Engineers 2020 Annual Meeting2019/9/4~
Academic presentationUnrefereedOtherCo-authorNitta Shinya;KUSUMI HarushigeJapan Society of Civil Engineers 2019 Annual Meeting2019/9/3~
Academic presentationUnrefereedOtherCo-authorKaneko,Genki;KUSUMI,Harushige;YUN,Yeboon;Nishio,AkinobuJapan Society of Civil Engineers 2021 Annual Meeting2019/9/3~
OtherKUSUMI Harushige2019/7/1~
PapersUnrefereedOtherCo-authorKONO Ryoto;KUSUMI Harushige;Shimomura Kotaro;Teraoka Katsumi2019/5/25~
OtherSingle-AuthorKUSUMI Harushige2019/3~
KUSUMI Harushige2019/1/18~
PapersIn refereedOtherCo-authorKUSUMI Harushige;MORIMOTO,Ryo;MASUMITSU,Takaya2018/11/2~
Academic presentationIn refereedOtherCo-authorTERAOKA,Katsumi;KAWAKAMI,Hiroyuki;KUSUMI Harushige2018/11/2~
PapersUnrefereedAcademic JournalCo-authorMikiko Kuno;Shigeru Miki;Yuzo Ohnishi;Takeshi Sasaki;Harushige Kusumi2018/1/17~
PapersIn refereedCo-authorMizuki Nakatera;Harushige Kusumi;Yuzo Ohnishi2017/11/2~
PapersIn refereedCo-authorMikiko Kuno;Shigeru Miki;Takeshi Sasaki;Yuzo Ohnishi;Harushige Kusumi2017/11/2~
International academic conferenceCoupling Analysis of Water flow and Rock Mass Using MPS Method and DDA for Debris Flow on a Rock SlopeUnrefereedOtherCo-authorMikiko Kuno;Shigeru Miki;Yuzo Ohnishi;Rakeshi Sasaki;Harushige KusumiEIT-JGCA Joint International Symposium on Scope of Engineering Geology under Climate Change 2017 2017/8/29~EIT-JGCABangkok ,Thailand英文Heavy rain and intimidating typhoon often cause slope failure and debris flow in Japan and other Asian areas. Numerical solutions have been reported by using FEM in coupling behavior of solid and water. Typical example is a consolidation problem in which water is squeezed from soil skeleton by external load. However, these processes could not be solved by conventional FEM. This paper deals with coupling between solid and fluid in discontinuous rock and soil mass, especially rock and water mixed debris flow. This study presents a new approach in which rock block movement is solved by DDA (Discontinuous Deformation Analysis) and water movement inside the rock mass is solved by MPS (Moving Particle Simulation) method separately. Then they are coupled in the calculation to account for the mutual interaction. To analyze the coupling between the water flow and the falling blocks of rock, this study introduces the equivalent external forces for the falling blocks of rock caused by the water flow. The velocities are calculated for the fluid flow based on MPS. MPS analyzes the part of fluid alone and DDA analyzes the part of solid alone to set the initial state of the analysis. After the results is superimposed, the coupling analysis is carried out.
International academic conferenceThe evaluation of performance degradation of pumping well for water resourceUnrefereedOtherCo-authorMizuki Nakatera;Harushige Kusumi;Yuzo Ohnishi;Kenji TakahashiEIT-JGCA Joint International Symposium on Scope of Engineering Geology under Climate Change 2017 2017/8/29~EIT-JGCABangkok ,Thailand英文Kyoto basin abounds good quality groundwater whose quantity is estimated 21.1 billion tons. At Minami-yamashiro region, this good quality groundwater is pumped up as a head of a waterworks. In order to pump groundwater, it is necessary to use the well. When we use it for many years, the pumping capacity of the well is reduced, eventually it falls into malfuction. Current state of maintenance is washing of well and interval of the maintenance is determined based on an exper's empirical rules. Therefore, a management system for quantitative maintenance is not established yet. In particular, it is a problem that the performance assessment method for a well is not established. Accordingly, based on the past pumping date, we examine the performance assessment for wells in the region and then we propose prediction models for a well performance assessment for wells in the region and then we propose prediction models for a well performance with time. Moreover, in order to build the strategic and rational maintenance plan of the well, we apply the economic analysis method.
Chapter or SectionIn-house publicationSingle-AuthorHarushige Kusumi2017/2/1~
PapersCo-authorMizuki Nakatera;Harushige Kusumi;Yuzo Ohnishi2017/1/19~
PapersCo-authorMikiko Kuno;Yuzo Ohnishi;Harushige Kusumi2017/1/19~
PapersOtherCo-authorMikiko Kuno;Shigeru Miki;Yuzo Ohnishi;Takeshi Sasaki;Harushige KusumiDDA; MPS; debris flow;coupling analysis2017/1/11~
International academic conferenceRock mass and water coupling analysis for debris flow by combining DDA and MPSUnrefereedOtherCo-authorMikiko Kuno;Shigeru Miki;Yuzo Ohnishi ;Takeshi Sasaki;Harushige Kusumi2016/8/30~EIT-JSCEBangkok ,Thailand英文Climate change may cause natural hazards of heavy rain and typhoon, then they trigger slope failure and debris flow at many slopes in Japan and other Asian areas.
In the form of limit analysis with c and , water pressures are often imposed in the equation. Stability of slope is evaluated by a factor of safety for a slope with this method. However, the limit analysis cannot analyze the time-dependent process of slope failure.
Usual slope stability analysis for discontinuous media such as DEM or DDA (Discontinuous Deformation analysis) only considers movement of soils and rocks and in these cases water is taken into account implicitly. However, it is known that water explicitly affect stability of rock mass. This study presents a new approach in which rock block movement is solved by DDA and water movement is solved by MPS (Moving Particle Simulation) separately. To analyze the coupling between the water flow and the falling blocks of rock, this study introduces the equivalent external forces for the blocks of rock caused by the water flow.
International academic conferenceAnalysis about decrease in performance of pumping well in water source and management plan in Kyoto Prefecture Minamiyamashiro regionUnrefereedOtherCo-authorMizuki Nakatera;Harushige Kusumi;Yuzo Ohnishi2016/8/30~EIT-JSCEBangkok ,Thailand英文Kyoto basin abounds good quality groundwater whose quantity is estimated 21.1 billion tons. The amount of groundwater is comparable to the Lake Biwa. At Joyo City and Yawata City that belong to Minami-yamashiro region, this good quality groundwater is pumped up as a head of a waterworks. Usually, when a well is used for many years, a clog will occur on a strainer in an aquifer and the performance of a well degrades. However, to bore a new well requires huge cost. Therefore, current state of the countermeasures for performance degradation is washing of a well. Interval of this maintenance of washing is determined based on an expert’s empirical rules. Unfortunately, a management system for quantitative maintenance is not established yet. In particular, it is a problem that the performance assessment method for a well is not established. Accordingly, based on the past pumping data of the target region, we examine the performance assessment for wells in the region and then we propose prediction models for well performance with time. Moreover, in order to build the strategic and rational maintenance plan of the wells, we apply the economic analysis method.
PapersOtherCo-authorMASUMITSU,Takaya;Harushige Kusumi;Yuzo Ohnishi2016/1/9~
International academic conferenceOtherCo-author2015/9/8~
International academic conferenceOtherCo-author2015/9/8~
International academic conferenceOtherCo-author2015/9/8~
International academic conferenceOtherCo-author2015/9/7~
PapersUnrefereedOtherCo-authorMASUMITSU,Takaya;KUSUMI,Harushige;Yuzo Ohnishi;KAMIDE,Sadayuki2015/1/9~
UnrefereedOtherSingle-AuthorKUSUMI,Harushige2014/11~
International academic conferencePumping simulation using 3D analysis on an aging wellUnrefereedOtherCo-authorTakafumi Kitaoka;Harushige Kusumi;Yuzo OhnishiARMS8-2014 ISRM International Symposium2014/10/14~2014/10/15JCRMIn the management and usage of groundwater resource, we need to work on an accurate grasp of the current situation and to make a future vision in the region where groundwater exploitation is active. The examined region is surrounded by mountains formed by a bowl shaped depression in the Paleozoic strata and granite. The paleozoic strata basin rock is an impermeable bed upon which there is a permeable diluvium and then alluvium. It is estimated a lot of groundwater is saved. In the past research, we performed pumping simulation analysis for the pumping well of waterworks in order to consider the influence on the groundwater level by pumping quantitatively. As a result, the fluctuation of water level by many pumping wells was able to be reproduced. However, in some wells, the tendency for a groundwater level decreasing was not reproduced, despite of having fixed or stopped the pump discharge. If a pumping well continues to pump groundwater for a long time, various groundwater !
obstacles like the fall of the groundwater level or required amount of water can not be acquired and others will surface. One of the possible reasons for this is the weakening of temporal well capability which originates from a clog in a screen in many cases. In this research, we examined quantitatively the characteristics of water-decline-level of an aging well by improving a past model and performing pumping simulation analysis.
Academic presentationUnrefereedOtherCo-authorMASUMITSU,Takaya;KUSUMI,Harushige;OHNISHI,Yuzo;KAMIDE,Sadayuki2014/9/12~
Academic presentationUnrefereedOtherCo-authorYAMAMOTO Takuya;KUSUMI Harushige;OHNISHI Yuzo2014/9/11~
International academic conferenceSimulation Analysis of 3D Seepage Groundwater Flow in Fushimi-ku, Kyoto.UnrefereedOtherCo-authorYAMAMOTO Takuya;OHNISHI Yuzo;KUSUMI HarushigeEIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 20142014/8/26~EIT-JSCEBangkok ,Thailand
International academic conferenceMulti evaluations system by self-organizing maps using three geophysical prospectings.UnrefereedOtherCo-authorMASUMITSU Takaya;KUSUMI Harushige;OHNISHI Yuzo;KAMIDE SadayukiEIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 20142014/8/26~EIT-JSCEBangkok ,ThailandIn Japan, in the high economic growth period in 1960’s, a great number of slopes were formed to construct many roads. Now, the slopes have been aging, therefore it is important to estimate the soundness of the aging slopes and maintain slopes effectually. So, in situs, we usually carry out seismic wave method, surface wave method, and electromagnetic method as geophysical prospecting method. However, we cannot comprehensively interpret the result of each geophysical prospecting in a numerical formula of the engineering now. Therefore, we take notice of self-organizing maps used widely in a field of the information processing engineering, and tried to interpret multidimensional data by integrating. In this paper, we classified the ground property by self-organizing maps. The classification result is relatively conformal with boring data. Therefore, it is recognized that it can be used to improve the interpretive accuracy of multiple geophysical prospecting. And, it can be shown that this technique is effective to estimate of the ground property of the aging slopes.
International academic conferenceThe evaluation of the poor performance of pumping wells.UnrefereedOtherCo-authorYAMAMOTO Takuya;OHNISHI Yuzo;KUSUMI Harushige9th International Symposium in Science and Technology at Cheng Shiu University 20142014/8/19~Cheng Shiu UniversityTaiwan, Kaohsiung
International academic conferenceComprehensive evaluation system regarding Self-Organizing Maps by using three sets of geophysical prospecting data of cut slopes.UnrefereedOtherCo-authorMASUMITSU Takaya;OHNISHI Yuzo;KUSUMI HarushigeCheng Shiu UniversityP1972014/8/19~Cheng Shiu UniversityTaiwan, Kaohsiung It is important to develop a method for understanding the stability and the durability of these slopes by using “geophysical prospecting method”. However, we have a limitation to interpret the data from one geophysical prospecting method. In this paper, we focus on using multiple geophysical prospecting methods. Then, we tried to evaluate the data from multiple geophysical prospecting methods by applying Self-organizing maps (SOM).
UnrefereedIn-house publicationSingle-AuthorKUSUMI Harushige2014/7~
Academic presentationUnrefereedOtherCo-authorYAMAMOTO Takuya;KITOKA Takafumi;OHNISHI Yuzo;KUSUMI Harushige;MASUDA Tokubei2014/5/31~
Academic presentationUnrefereedOtherCo-authorMASUMITSU Takaya;KUSUMI Harushige;OHNISHI Yuzo;KAMIDE Sadayuki2014/5/31~
BookUnrefereedMonographCo-authorKUSUMI Harushige;NAKAMURA Makoto;YAMAMOTO Tsuyoshi;TERAOKA Katsumi2014/5/27~
PapersUnrefereedAcademic JournalSingle-AuthorKUSUMI Harushige2014/1~
International academic conferenceRelation between Rock Bolt Setting and Shear Strength of Reinforced Ground by Rope Net and Rock Bolt MethodUnrefereedOtherCo-authorHiroyoshi Nakashima;Harushige Kusumi;Katuhiko TeraokaEIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 20132013/9/13~2013/9/13EIT-JSCEBangkok, ThailandMany unstable slopes exist about 1000 slope failures each year have occurred in Japan. An about 90% of the failed slope is natural slope having the tree vegetation and the failure occurred in the surface ground within 3 meters in depth. The slope failure is mainly caused from the heavy rain and small earthquake. While the failures have to be prevented, the natural environment such as trees and vegetations on the slope has to be also maintained. Therefore, the retaining structure and the shotcrete, which have to cut the trees on the slope, are not suitable from the point of view of the conservation of natural state. From this point, the rock bolt and rope net method is developed to protect the slope failure with the nature conservation. The purpose of this research is to understand the mechanism of the reinforcement effect of rock bolt setting of the method. The shear test by the model 1/10 scale is conducted. As a result, it is clarified that the rock bolt setting has a large effect on the slope behavior.
International academic conferenceSimulation Analysis of 3D Seepage Groundwater Flow and Making of 3D Geological Structure Model in Multilayered GroundUnrefereedOtherCo-authorTakuya Yamamoto;Harushige Kusumi;Takafumi KitaokaEIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 20132013/9/13~2013/9/13EIT-JSCEBangkok, ThailandIn the management and a usage of a groundwater resource, we need to work on an accurate grasp of the current situation and to make a future vision in the region where the groundwater exploitation is active. In this research, we aim at the creation of the three-dimensional geological structure model in multilayered ground and the three-dimensional seepage flow analysis of groundwater by using the model. The area in this research exist many multi-layers which are alternately stratified gravel layers and clay layers. Firstly, based on bowling log and an altitude distribution map, we grasped the topography and the geological structure of a target area. Secondly, based on boring log, we interpolated the layer thickness of every layer in a model by using the Kriging method. The outline of the three-dimensional geological structure is completed by piling them up. Thirdly, considering of the position of pumping wells and the layer thickness distribution, we divided mesh. Finally, we reproduced groundwater flow by conducting groundwater analysis, and created the figure which visualized the groundwater flow.
PapersStability of reinforced slope with Rock Bolt and Rope Net MethodUnrefereedOtherCo-authorHiroyoshi Nakashima;Harushige Kusumi;Katuhiko TeraokaInternational Symposium in Science and Technology at Kansai University 2013pp.3412013/8/21~2013/8/23International Symposium in Science and Technology at Kansai University 2013OsakaWe suggest the Rope Net and Rock Bolt method having function of slope stabilization and conservation of natural state. The purpose of study is to establish design of ropenet and rockbolt method preserving landscape and natural environment. The mechanical behavior and deformation behavior of the method were partially clarified by past studies. The purpose of this research is to understand the mechanism of reinforcement effect by rock bolt setting of the method and the result of research add in the existent design method.
PapersMaking of 3D Geological Structure Model in Multilayered GroundUnrefereedOtherCo-authorTakuya Yamamoto;Harushige Kusumi;Takafumi KitaokaInternational Symposium in Science and Technology at Kansai University 2013pp.3422013/8/21~2013/8/23International Symposium in Science and Technology at Kansai University 2013 In this research, we make the three-dimensional geological structure model for groundwater simulation. The model can consider the influence that pumping gives the groundwater flow in groundwater simulation. The model represents the topography of the area exactly. It was proved by comparing the topographical map with the model.
PapersIn refereedAcademic JournalCo-authorKITAOKA Takahumi;KUSUMI Harushige;NAKAMURA Makoto2013/7/1~
Magazine articleUnrefereedIn-house publicationSingle-AuthorKUSUMI Harushige2013/7~
PapersIn refereedAcademic JournalCo-author2013/4~
LectureThe Chairman the external evaluation committee of the Global COEUnrefereedOtherSingle-AuthorHarushige Kusumi2012/12~
UnrefereedOtherKUSUMI,Harushige2012/12~
PapersUnrefereedOtherCo-author2012/11/16~
PapersUnrefereedOtherCo-author2012/11/9~
PapersUnrefereedOtherCo-author2012/11/9~
PapersSoundness Evaluation of Ground Conditions Inside Decrepit Slopes by Conversion Analysis of Geophysical DataUnrefereedCo-authorTakaya Ofuji;Harushige Kusumi;Makoto Namamura;Tsuyoshi Yamamoto2012 ISRM Regional Symposium ARMS7-The 7th Asian Rock Mechanics Symposium THE PRESENT AND FUTURE OF ROCK ENGINEERING2012/10/16~International Society for Rock MechanicsKoreaIn Japan, many of the slopes covered with shotcrete have aged considerably. Therefore, there is a risk that slope failures may occur due to the effects of factors such as seasonal weather patterns, natural disasters, climate change, heavy rainfall, and earthquakes. Therefore, it is important to develop a method for monitoring the stability and the durability of these slopes. In this paper, we propose a technique (hereafter referred to as “conversion analysis”) that converts seismic velocity and electric resistivity data to porosity and saturation, which is then used to monitor weathering and groundwater fluctuation behind the slope. There have been several studies regarding the empirical relations between geophysical parameters such as seismic velocity and resistivity, and engineering properties such as porosity and saturation. At the investigation sites, seismic tomography and resistivity tomography were carried out between the ground surface and the boreholes. Investigation was conducted a total of 5 times, once in the summer and once in the winter for 3 years. As the results, it was possible to monitor the signs of seasonal variation and weathering in the ground.
International academic conferenceMulti Evaluations System of Three Geophysical Prospectings by Self-Organizing MapsUnrefereedCo-authorTakaya Ofuji;Harushige Kusumi;Michinao Terada;Tsuyoshi YamamotoEIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 2012 2012/9/14~EIT-JSCEBangkok, ThailandIn Japan, in the high economic growth period in 1960’s, a great number of slopes were formed to construct many roads. Now, the slopes have been aging, it is important to estimate the health of the aging slope and maintain slopes effectually. So, in situs, we usually carry out seismic wave method, surface wave method, and electric method. However, there is not the technique to compound and interpret the result of each geophysical prospectings in a numerical formula of the engineering now. Therefore, we notice to self-organizing maps used widely in a field of the information processing engineering, and tried to interpret multidimensional data by integrating.In this paper, we classified the ground property by self-organizing maps. The classification result is relatively conformal with boring data. Therefore, it is recognized that it can be used to improve the interpretative accuracy of compound geophysical prospectings. And, it can be shown that this technique is effective to estimate of the ground property of the aging slope.
International academic conference3D Seepage Flow Simulation of Groundwater by Divided Ground Models in Kyoto BasinUnrefereedCo-authorShuhei Kotani;Harushige Kusumi;Michinao Terada;Takafumi KitaokaEIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 2012 2012/9/14~EIT-JSCEBangkok, ThailandIn this research, we chiefly conducted on-site measurement and analysis to examine how the pumping wells influence groundwater behavior. And, we tried to reproduce the water level decreases of the pumping well caused by well aging. First of all, we understood the influence on the fluctuation of water level by a difference in geographical feature or geology conditions, based on long-term data concerning pumping discharge and groundwater level at each pumping well in the waterworks. Next, we created the wide-ranged analytical model including all the wells for analysis. And, we created models which use the water head value acquired by the wide-ranged model as a boundary condition, and performed a simulation. Finally, we tried to reproduce the water level decreases of the pumping wells caused by well aging by using the made models. As a result, it can be seen from our research that the fluctuation of water evel caused by group wells has been reproduced accurately by using our model for this present study. And, the analysis considering the well aging was reproduced the water level decreases caused by strainer clogging.
International academic conferenceRelation with Shear-Strength and Water Contents of Reinforced Slope by Rope-net and Rock-bolt MethodUnrefereedCo-authorHiroyoshi nakasima;Harushige Kusumi;Michinao Terada;Katsumi TeraokaEIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 2012 2012/9/14~EIT-JSCEBangkok, ThailandThere are many unstable slopes in mountainous and valley areas in Japan. Approximately 1000 slope failures have occurred. Approximately 90% of these were surface failures, occurring at a depth of less than 3m. In Japan, as in addition to earthquakes, extreme weather conditions such as typhoons, heavy rain and heavy snow often occur, landslides present a serious danger. Moreover, environmental problems such as global warming need to also be considered. One effective counter-measure is the preservation and growth of CO2 absorbing forests. In response to these needs, this research, presents a new method of slope stabilization which can prevent slope collapses, while also considering the environment and scenery. This method utilizes rock-bolts, rope-nets, and pressure plates as reinforcing materials, while also minimizing the need to remove trees, in order to preserve forests. This research utilizes shearing tests at a 1/10 scale, in order to clarify the effectiveness of reinforcements utilizing this method in decomposed granite soil with a modified water content. As a result, it was found that the effect of the reinforcement method contributed significantly to the behavior of each material.
International academic conferenceStudying the Effects on Groundwater Levels and Water Qualities of a New Subterranean Construction Using a 3D Management Model for Groundwater in JapanUnrefereedCo-authorTakafumi Kitaoka;Harushige Kusumi;Michinao Terada;Shuhei KotaniEIT-JSCE Joint International Symposium on International Human Resource Development for Disaster-Resilient Countries 2012 2012/9/13~EIT-JSCEBangkok, ThailandKyoto city has various traditional cultures and industries. One of these is the production of Japanese sake, for which Fushimi-region in Kyoto is famous. The object area, which is 4 km2 and overcrowded with 50 wells, uses groundwater. However, new sewage pipe construction was done to the area that the brewing company concentrated on last year. As purpose of this study, the influence that those underground structures exerted on the groundwater level and the influence on the groundwater pollution were examined by the numerical analysis that reflected the observational data. We had set the pump volume and selected the contaminant material that would extend most under analysis. In this, we predicted the extent of the pollution, which is being blocked by the clay layer. As a result, we concluded that continuous clay layer at this region eases the influence of pumping volume from deep layer to water's fluctuation level in the shallow layer, and prevents the invasion of contaminants.
International academic conference3D Simulation Analysis of Goundwater Seepage Flow and Thermal Movement for Energy Saving related with Aquifer Thermal Energy StorageUnrefereedOtherCo-authorTakafumi Kitaoka;Harushige Kusumi,;Michinao Terada;Tatsuru Yamamoto7th INTERNATIONAL SYMPOSIUM IN SCIENCE and TECHNOLOGYP2642012/8/30~Universiti SAINS MALAYSIA Penang Island
International academic conferencePumping Simulation by divided Ground Models on Multi-Pumping WellsUnrefereedOtherCo-authorTakaya Ofuji;Harushige Kusumi;Michinao Terada;Shuhei Kotani7th INTERNATIONAL SYMPOSIUM IN SCIENCE and TECHNOLOGYP2632012/8/30~Universiti SAINS MALAYSIA Penang Island
International academic conferenceMulti Evaluations Method of Two Geophysical Explorations by Self-Organizing MapsUnrefereedOtherCo-authorShuhei Kotani;Harushige Kusumi;Michinao Terada;Takahito Nishiki7th INTERNATIONAL SYMPOSIUM IN SCIENCE and TECHNOLOGYP261-2622012/8/30~Universiti SAINS MALAYSIA Penang Island
International academic conferenceExcavation Simulation Analysis of Twin Tunnel Construction under Thin Overburden Cover and Unconsolidated LayerUnrefereedOtherCo-authorTakahiro Shimizu;Harushige Kusumi;Michinao Terada;Takafumi Kitaoka7th INTERNATIONAL SYMPOSIUM IN SCIENCE and TECHNOLOGYP250-2512012/8/30~Universiti SAINS MALAYSIAPenang Island
International academic conferenceRelation with Shear Strength and Water Contents of Reinforced Decomposed Grahite Soil Slope by Rockbolt and Ropenet MethodUnrefereedOtherCo-authorHiroyoshi nakasima;Harushige Kusumi;Michinao Terada;Katsumi Teraoka7th INTERNATIONAL SYMPOSIUM IN SCIENCE and TECHNOLOGYP254-2552012/8/30~Universiti SAINS MALAYSIAPenang Island
Academic presentationUnrefereedOtherCo-author2012/7/16~
Academic presentationUnrefereedOtherCo-author2012/7/14~
Academic presentationUnrefereedOtherCo-author2012/6/9~
Academic presentationUnrefereedOtherCo-author2012/6/9~
Academic presentationUnrefereedOtherCo-author2012/6/9~
Academic presentationUnrefereedOtherCo-author2012/6/9~
PapersUnrefereedOtherCo-authorTakaya 0FUJI;Harushige KUSUMI;Makoto NAKAMURA;Ken TSUJI;Kasumi NAKAMURA2012/1/13~
PapersUnrefereedOtherCo-authorTakahito Nishiki;Harushige Kusumi;Michinao Terada;Makoto Nakamura2012/1/12~
Papers3D model of groundwater diffusion analysis and research of groundwater characterization based on field measurement in Kyoto basinUnrefereedAcademic JournalCo-authorTakafumi Kitaoka ;Harushige KusumiProceedings of the 15th International Symposium on Recent Advances in Exploration Geophysics in Kyoto (RAGE2011)pp.19-24 CD-ROM No.52011/11/24~SEGJeople in Kyoto basin. In this research, we chiefly proceed on-site measurement and analysis to predict how the 1 p.p.m source of the contamination spreads in the shallow layer. We stress that there are no pollutants actually being produces in these areas. In order to ensure the long term usability of the regions groundwater, long-term observation and analysis will be necessary. Firstly, we measured the groundwater level and came to understand the groundwater properties in this area. Next, we analyzed the 3D simulation of groundwater while using those data. Having arranged the bore data, we then constructed an accurate stratum model necessary for analyzing. We then analyzed the seepage flow in order to reproduce the groundwater flow. Finally, we assumed how contamination occurred in groundwater by using the result of the seepage flow analysis with maximum accuracy, and subsequently carried out the advection and diffusion analysis. And, we are able to predict how the 1 p.p.m source of the contamination spreads in 5 yeas in the shallow layer. For the purpose of groundwater conservation, we would like to use this simulation model as a general assessment to protect the resource and the environment of groundwater.
PapersUnrefereedOtherCo-authorTakaya 0FUJI;Harushige KUSUMI;Makoto NAKAMURA;Ken TSUJI;Kasumi NAKAMURA2011/11/11~
PapersPumping simulations using 3D analysis on multi-pumping wellsIn refereedCo-authorTakafumi Kitaoka;Harushige Kusumi;Makoto NAKAMURA12th ISRM International Congress on Rock Mechanics(Harmonising Rock Engineering and the Environment)2011/10/20~International Society for Rock MechanicsIn this research, we chiefly proceed on-site measurement and analysis to examine how the pumping wells influence groundwater properties. The examined region is surrounded by mountains formed by a bowl shaped depression in the Paleozoic strata and granite. The paleozoic strata basin rock is an impermeable bed upon which there is a permeable diluvium and then alluvium. It is estimated a lot of groundwater is saved. However, if an excessive pumping is continued, it can cause the exhaustions of the groundwater and the subsidence, and especially multiple wells which take a large amount of water in a small area are considered to have a great impact. We established a 3D model for groundwater and make suggestions for the adequate management of the groundwater by a pumping simulation analysis. This simulation was the subject of which was a pumping well for water service - water levels for one pump were large. As a result, it can be seen from this that the fluctuation of water level group wells cause accuracy by using our model made in the present study.
PapersA study of the compound evaluation for geophysical explorations by self-organizing mapsIn refereedSingle-AuthorMakoto NAKAMURA;Harushige KUSUMI;Tatsuru YAMAMOTO;Tsuyoshi YAMAMOTO;Takeshi TSUJI12th ISRM International Congress on Rock Mechanics(Harmonising Rock Engineering and the Environment)2011/10/18~ In Japan, in the high economic growth period in 1960’s, a great number of cutting ground and embankment slopes were formed to construct many roads. They have been aging now, it is important to estimate the health of them and maintain effectually. So, in situs, we usually carry out many kinds of the geophysical exploration. However, there is not the technique to compound and interpret the result of each geophysical exploration in a numerical formula of the engineering now. Therefore, we notice to self-organizing maps (SOM) used widely in a field of the information processing engineering, and tried to interpret multidimensional data by integrating. In this paper, we classified the ground property by SOM. The classification result is relatively conformal with boring data. Therefore, it is recognized that it can be used to improve the interpretative accuracy of compound geophysical explorations.
Greetings from Kansai University!UnrefereedOtherSingle-AuthorHarushige,KUSUMIDynamics of Traditional Research Societies in a Rapidiy Changing World2011/9/8~2011/9/11Japanese-Garman Symposium 8-10 September 2011
PapersEstablishing a 3D model of groundwater advection and diffusion at Fushimi ward in Kyoto basinUnrefereedCo-authorTakafumi Kitaoka;Makoto Nakamura;Harushige Kusumi EIT-Japan Symposium 2011 on Human Security Engineering,EIT-Japan,20112011/8/30~EIT-JAPANBangkok, ThailandKyoto city has various traditional cultures and industries. One of them is the production of Japanese sake, for which Fushimi Ward in Kyoto is famous. The purpose of our study is to maintain the groundwater resource that supports the life and culture of people in Fushimi ward. Firstly, we measured the groundwater level and came to understand the groundwater properties in this area. Next, we analyzed the 3D simulation of groundwater while using those data. Having arranged the bore data, we then constructed an accurate stratum model necessary for analyzing. We then analyzed the seepage flow in order to reproduce the groundwater flow. Finally, we assumed how contamination occurred in groundwater by using the result of the seepage flow analysis with maximum accuracy, and subsequently carried out the advection and diffusion analysis. For the purpose of groundwater conservation, we would like to use this simulation model as a general assessment to protect the resource and the environment of groundwater.
PapersGreening method of shotcrete slope blended on landscapeUnrefereedCo-authorShunsuke Kinoshita;Makoto Nakamura;Michinao Terada;Harushige Kusumi EIT-Japan Symposium 2011 on Human Security Engineering,EIT-Japan,20112011/8/30~EIT-JAPANBangkok, ThailandThis study concerns the protection method and the natural maintenance of aging shotcrete. In Japan, in the high economic growth period in 1960’s, a great number of slopes were formed to construct many roads and most slope protection methods were to cover shotcrete on the slope. In recent years, with concerns about the environmental and landscape, the construction of shotcrete is decreasing. However, even now about 7,000,000㎡of shotcrete is laid every year, and it is predicted that the total amount of shotcrete is enormous. Now, about 60 years passes after a great number of shotcrete was laid, and shotcrete have been aging. Therefore, we suggested the method which construct for directly aging shotcrete in the protection method and the greening protection method is considering cost and risk with new construction. We adopt the protection method by rock bolt and rope net. In this study, at first, we establish the vegetation base suitable for growth of plants which can be use together with the protection method. And then, we install many kind of the vegetation base that gave the vegetation on a model shotcrete. Finally, we compared the rates of water retention and vegetation growth.
PapersCompound evaluations method of some geophysical explorations by self-organizing mapsUnrefereedCo-authorTakaya Ofuji;Makoto Nakamura;Tsuyoshi Yamamoto;harushige Kusumi EIT-Japan Symposium 2011 on Human Security Engineering,EIT-Japan,20112011/8/30~EIT-JAPANBangkok, ThailandIn Japan, in the high economic growth period in 1960’s, a great number of slopes were formed to construct many roads. Now, the slopes have been aging, it is important to estimate the health of the aging slopes and maintain slopes effectually. So we usually carry out seismic wave method, surface wave method, electric method and so on. However, there is not the technique to compound and interpret the result of each geophysical exploration. Therefore, we notice to self-organizing maps (SOM) used widely in a field of the information processing engineering, and tried to interpret multidimensional data by integrating. In this paper, we classified the ground property by self-organizing maps. The classification result is relatively conformal with boring data. Therefore, it is recognized that it can be used to improve the interpretative accuracy of compound geophysical explorations. And, it can be shown that this technique is effective to estimate of the ground property of the aging slope.
Papers3D seepage flow simulation of groundwater by many pumping wells in Kyoto BasinUnrefereedCo-authorShuhei Kotani;Takafumi Kitaoka;Makoto Nakamura;Harushige Kusumi EIT-Japan Symposium 2011 on Human Security Engineering,EIT-Japan,20112011/8/30~EIT-JAPANBangkok, ThailandIn this research, we chiefly proceed on-site measurement and analysis to examine how the pumping wells influence groundwater properties. The examined region is surrounded by mountains formed by a bowl shaped depression in the Paleozoic strata and granite. The paleozoic strata basin rock is an impermeable bed upon which there is a permeable diluvium and then alluvium. It is estimated a lot of groundwater is saved. However, if an excessive pumping is continued, it can cause the exhaustions of the groundwater and the subsidence, and especially multiple wells which take a large amount of water in a small area are considered to have a great impact. We established a 3D model for groundwater and make suggestions for the adequate management of the groundwater by a pumping simulation analysis. This simulation was the subject of which was a pumping well for water service - water levels for one pump were large. As a result, it can be seen from our research that the fluctuation of water level caused by group wells has been reproduced accurately by using our model.
PapersSlope failure simulation analysis caused rainfall on road slope by DEMUnrefereedCo-authorTakahiro Shimizu;Makoto Nakamura;Tsuyoshi Yamamoto;Harushige Kusumi EIT-Japan Symposium 2011 on Human Security Engineering,EIT-Japan,20112011/8/30~EIT-JAPANBangkok, ThailandIn our country, it is reported that there are a lot of cases which the slope failure is caused by the rainfall. Then, the purpose of our study is to analyze slope failure simulation caused by rainfall on fill slopes by DEM. Especially we focus on the real field. And, we regarded a decrease of clod strength as a decrease of frictional coefficient on this analysis. As a result, we have been able to calculate the decreasing rates of frictional coefficient and the start speeds of three cases that had different ways of groundwater's rising. From this result, it is recognized that the decreasing rate of the Case3 was the largest, and the start speed and move distance were also large. So, when it is heavy rain, we should take note it in Case3, and we can say that the possibility of influencing the inhabited area under the slope is high at collapse.
Papers3D simulation of groundwater advection and diffusion in Kyoto basinUnrefereedCo-authorTakafumi Kitaoka;Makoto Nakamura;Harushige KusumiInternational symposium in science and technology at Kansai University2011/8~International symposium in science and technology at Kansai University 2011Kansai UniversityThe purpose of our study is to maintain the groundwater resource that supports the life and culture of people in Fushimi ward. So, we need to make a 3D model for groundwater from the viewpoint of groundwater conservation as a general assessment method. For the purpose of groundwater conservation, we would like to use this simulation model as a general assessment to protect the resource and the environment of groundwater.
PapersStudy on greening of shotcrete slope considering landscape and earth environmentUnrefereedCo-authorShunsuke Kinoshita;Makoto Nakamura;Harushige KusumiInternational Symposium in Science and Technology at Kansai University2011/8~International symposium in science and technology at Kansai University 2011Kansai University In our study, we chose the vegetation base which was suitable for greening of shotcrete slope considering landscape and environment from the test results. We confirmed the water retention rate and the cover degrees in a test.
PapersExcavation simulation analysis of shallow tunnel in multilayered ground by DEMUnrefereedCo-authorTakahito Nishiki;Harushige Kusumi;Makoto NakamuraInternational Symposium in Science and Technology at Kansai University2011/8~International symposium in science and technology at Kansai University 2011Kansai University In this study, we tried excavation simulation of shallow tunnel by using distinct element method with high utility for a discontinuous ground. The focus of our research is actual collapse accident of tunnel, and we examined the presence of the collapse by setting conditions of underground water and the invert support, etc. As a result of the simulation, an analysis model collapsed when underground water exists and invert is not closed as the actual phenomenon.
PapersStudy on evaluations of some geophysical explorations by self-organizing mapsUnrefereedCo-authorTakaya Ofuji;Makoto Nakamura;Tsuyoshi Yamamoto;Harushige KusumiInternational symposium in science and technology at Kansai University2011/8~International symposium in science and technology at Kansai University 2011Kansai UniversityWe usually carry out geophysical explorations for slope conditions. However, there is no technique to compound and interpret the result of each geophysical exploration now. Therefore, we classified the ground property by self-organizing maps (SOM). The classification result by SOM is relatively conformal with boring data. Therefore, it is recognized that it can be used to improve the interpretative accuracy of compound geophysical explorations.
PapersPumping simulations using 3D FEM analysis on multi-pumping wellsUnrefereedCo-authorShuhei Kotani;Takahumi Kitaoka;Makoto Nakamura;Harushige KusumiInternational Symposium in Science and Technology at Kansai University2011/8~International symposium in science and technology at Kansai University 2011Kansai UniversityIn this research, we chiefly conducted on-site measurement and analysis to examine how the pumping wells influence groundwater behavior. We established a 3D model for groundwater and make suggestions for the adequate management of the groundwater by a pumping simulation analysis. As a result, it can be seen from our research that the fluctuation of water level caused by group wells has been reproduced accurately by using our model.
PapersSimulation analysis of failure by rainfall on road slope using DEMUnrefereedCo-authorTakahiro Shimizu;Makoto Nakamura;Tsuyoshi Yamamoto;Harushige KusumiInternational Symposium in Science and Technology at Kansai University2011/8~International symposium in science and technology at Kansai University 2011Kansai UniversityAt first, we regarded a decrease of clod strength as decrease of frictional coefficient on this analysis. As a result, we have been able to calculate the decreasing rates of frictional coefficient, and the start speeds. Moreover, we could recognize that collapse soil’s distance depends on frictional coefficient, and we could estimate the most dangerous slope among all cases.
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PapersUnrefereedOtherCo-author2011/7/5~
UnrefereedAcademic JournalSingle-AuthorHarushige,KUSUMI2011/7~
UnrefereedOtherCo-authored chapter2011/3/31~
UnrefereedIn-house publicationSingle-AuthorHarushige KUSUMI2011/3/23~
UnrefereedIn-house publicationCo-authorHiroyaqsu,OHTSU;Harushige,KUSUMI2011/3~
PapersInfluence on groundwater properties and pumping simulations using 3D analysis of multi-pumping wells in Kyoto basinIn refereedAcademic JournalCo-authorTakafumi Kitaoka;Harushige Kusumi;Makoto Makamurapp.371-3812011/3~In this research, we chiefly proceed on-site measurement and analysis
to examine how the pumping wells influence groundwater properties. Thearea of the analytical model is located in the southern part of Kyoto
prefecture. The examined region is surrounded by mountains formed by abowl shaped depression in the basin rock, which forms an impermeable bed
upon which there is permeable sand and gravel. It is estimated a lot ofgroundwater is saved. However, if excessive pumping is continued, it may
exhaust the groundwater and result in subsidence. This is especiallytrue when multiple wells take a large amount of water in a small area
causing considerable impact. We established a 3D model for groundwaterand made suggestions for the adequate management of the groundwater
based on pumping simulation analysis. The subject of this simulation wasa pumping well for water service - water levels for one pump were a
particularly large pump pumped a large amount of water compared to theother pumps. As a result, by using our model for this present study it
can be seen from this simulation that the fluctuation of water levelgroup wells affect accuracy.
PapersA STUDY FOR THE COMPOUND EVALUATION OF GEOPHYSICAL EXPLORATIONS BY SELF-ORGANIZING MAPSIn refereedOtherCo-authorTatsuru YAMAMOTO;Harushige KUSUMI;Makoto NAKAMURA;Takeshi TSUJI;Kasumi NAKAMURA2011/1/14~In recent years, geophysical exploration is the remarkable method to evaluate the soundness of the aging slope. However, there is a limit of the interpretation by a geophysical exploration, so two or more geophysical explorations are used to make up for the limit of the interpretation. In this paper, we tried to evaluate the cluster classification of the ground state by two or more geophysical explorations with self-organizing maps (SOM), and compared the cluster classification with the results of the analysis to convert the combination of the seismic velocity and the resistivity into the porosity and the saturation. It was possible to evaluate the ground state of each cluster by SOM.
PapersSIMULATION ANALYSIS OF EXCAVATION OF SHALLOW TUNNEL IN MULTILAYERED GROUND BY DEMIn refereedOtherCo-authorTakahito NISHIKI;Kentaro ISE;Harushige KUSUMI;Makoto NAKAMURA2011/1/14~It is difficult that to set a clear standard concerning the design, because tunnels are excavated in various geotechnical conditions. So it is required that analytical method that can appropriately reproduce the mechanics behavior on the natural ground. In this study, the purpose of our research is established the analytical simulator in multilayered ground by using DEM. Then, the focus of our research is actual collapse accident of tunnel, and we examined the presence of the collapse by setting conditions of underground water and the invert support, etc. As a result of the simulation, an analysis model has collapsed when underground water exists and non-closing invert as the actual phenomenon.
LectureUnrefereedOtherSingle-AuthorHarushige KUSUMI2011/1/13~Research and Development of Lnnovative Science and Technology
PapersUnrefereedOtherCo-authorHarushige KUSUMI;Makoto NAKAMURA2011/1/13~Research and Development of Lnnovative Science and Technology
PapersCo-authorTatsuru Yamamoto;Harushige Kusumi;Makoto Nakamura;Ken Tsuji;Kasumi Nakamura2010/11/12~Kansai Branch of The Japanese Geotechnical SocietyOsaka
PapersCo-author83-882010/11/12~Kansai Branch of The Japanese Geotechnical SocietyOsaka
PapersA trial about the evaluation of compound geophysical explorations by self-organizing mapsMonographCo-authorTatsuru YAMAMOTO;Harushige KUSUMI;Makoto NAKAMURA;Tsuyoshi YAMAMOTO;Takeshi TSUJIProceedings of the 14th International Symposium on Recent Advances in Exploration Geophysics in Kyoto(RAEG2010)15-202010/11/4~2010/11/5SEGJKyotoIn Japan, in the high economic growth period in 1960’s, a great number of slopes were formed to construct many roads. Now, the slopes have been aging, it is important to estimate the health of the aging slope and maintain slopes effectually. So, in situs, we usually carry out seismic wave method, surface wave method, electric method, electromagnetic wave method, frequency domain electromagnetic method and so on. However, there is not the technique to compound and interpret the result of each geophysical exploration in a numerical formula of the engineering now. Therefore, we notice to self-organizing maps (SOM) used widely in a field of the information processing engineering, and tried to interpret multidimensional data by integrating. In this paper, we classified the ground property by self-organizing maps. The classification result is relatively conformal with boring data. Therefore, it is recognized that it can be used to improve the interpretative accuracy of compound geophysical explorations. And, it can be shown that this technique is effective to estimate of the ground property of the aging slope.
Geo-Environmental Laboratory,Kansai University;Organazed by The 14th International Symposium on Recent Advances in Exploration Geophysics in Kyoto(RAEG2010)KUSUMI,Harushige2010/11/4~2010/11/5Organized by Kyoto University,Geo-Environmental Laboratory,Kansai UniversityKyoto
PapersExcavation simulation analysis of shallow tunnel in multilayered ground by DEMUnrefereedOtherCo-authorTakahito Nishiki;Kentaro Ise;Harushige KusumiProceedings of EIT-JSCE Symposium on Engineering for Geo-Hazards:Earthquakes and Landslides-for Surface and Subsurface StructuresSession 1: Monitoring 22010/9/7~EIT-JSCEBangkok, ThailandIt is difficult that to set a clear standard concerning the design, because tunnels are excavated in various geotechnical conditions. Therefore, in general, the design is carried out still experientially, so it is required that analytical method that can appropriately reproduce the mechanics behavior on the natural ground. In this study, we tried excavation simulation analysis of shallow tunnel in multilayered ground using DEM, and the purpose of our research is established the analytical simulator in multilayered ground. Then, the focus of our research is actual collapse accident of tunnel, and we examined the presence of the collapse by setting conditions of underground water and the invert support, etc. We decided the analytical parameters by trying the simulation analysis of biaxial compression test using DEM, before we start the excavation simulation. As a result of the simulation, an analysis model has collapsed when underground water exists and non-closing invert as the actual phenomenon.
PapersMonitoring of ground condition into road decrepit slopes by seismic and electric prospectingUnrefereedOtherCo-authorMakoto Nakamura;Harushige Kusumi;Tatsuru Yamamoto;Tsuyoshi YamamotoProceedings of EIT-JSCE Symposium on Engineering for Geo-Hazards:Earthquakes and Landslides-for Surface and Subsurface Structurespp.37-422010/9/6~2010/9/8EIT-JSCEBangkok, ThailandA large number of shotcrete slopes that were constructed in Japan during the 1970’s are now more than 30 years old, and there has been a significant degree of deterioration. Therefore, it is important to develop a method for monitoring the stability and the durability of these slopes. In this paper, we propose a technique that converts seismic velocity and electric resistivity data to porosity and saturation, which is then used to monitor weathering and groundwater fluctuation behind the slope. The evaluation results of this methodology confirm that the distribution of porosity and saturation of rock mass around the evaluated slope arrived at by this conversion system agree with those of the actual rock mass conditions evaluated using boring samples. In addition, it was possible to monitor the signs of seasonal variation and weathering in the ground by performing monitoring using this methodology over a period of multiple years.
PapersThe study of greening shotcrete considered the landscapeUnrefereedOtherCo-authorShunsuke Kinoshita;Harushige Kusumi;Yoshihiko Oomura;Katuhiko TeraokaProceedings of EIT-JSCE Symposium on Engineering for Geo-Hazards:Earthquakes and Landslides-for Surface and Subsurface StructuresPoster Section2010/9/6~2010/9/8EIT-JSCEBangkok, ThailandThis study concerns the protection method and the natural maintenance of aging shotcrete. In Japan, in the high economic growth period in 1960’s, a great number of slopes were formed to construct many roads and most slope protection methods were to cover shotcrete on the slope. In recent years, with concerns about the environmental and landscape, the construction of shotcrete is decreasing. However, even now about 7,000,000㎡of shotcrete is laid every year, and it is predicted that the total amount of shotcrete is enormous. Now, about 60 years passes after a great number of shotcrete was laid, and shotcrete have been aging. Therefore, we suggested the method which construct for directly aging shotcrete in the protection method and the greening protection method is considering cost and risk with new construction. We adopt the protection method by rock bolt and rope net. In this study, at first, we establish the vegetation base suitable for growth of plants which can be use together with the protection method. And then, we install many kind of the vegetation base that gave the vegetation on a model shotcrete. Finally, we compared the rates of water retention and vegetation growth.
PapersDevelopment of a new natural slope stability method without cutting treesUnrefereedOtherCo-authorShohei Hiroto;Harushige Kusumi;Katsumi TeraokaProceedings of EIT-JSCE Symposium on Engineering for Geo-Hazards:Earthquakes and Landslides-for Surface and Subsurface StructuresSession 1: Monitoring 22010/9/6~2010/9/8EIT-JSCEBangkok, ThailandIn recent years, about 1000 slope failures occur every year in Japan, and about 90% of them are superficial slope failures that occur within 3 meters from the surface. Therefore this research suggests a new natural method for the slope stability. It takes environment and landscape into consideration, and can prevent superficial slope failures from occurring. Reinforcement members used in this method are rock-bolts, unit-nets, and pressure-plates. And we tried to preserve existing trees as much as possible. The purpose of this research is to establish more accurately designed method, and so the shearing test by the model of 1/10 scale was conducted. We made a model ground with reinforcement materials in shearing box and made it sheared by automatic load machine. Then we measured shear load with loadcells measures shear load and strain gauges attached to rock-bolt and unit-net. In the past research, we made it clear how the change of the effect of diameter of pressure plates gave to reinforcement mechanism in this method on sandy soil ground. The result was that enlarging diameters of pressure plates increases reinforcement effect comprehensively in this method. Shearing test was carried out on cohesive soil ground in addition to sandy soil ground in this research, and we examined how the difference of the grain size made the effect to the reinforcement mechanisms. As a result, it was clarified that the depression effect of transformation became bigger as the diameters of pressure plates was longer also in the mixed soil ground.
PapersExamining the effects on underground water levels of a subterranean construction using a 3D management model for underground water in Kyoto-City, Japan.UnrefereedOtherCo-authorTakafumi Kitaoka;Harushige KusumiProceedings of EIT-JSCE Symposium on Engineering for Geo-Hazards:Earthquakes and Landslides-for Surface and Subsurface StructuresSession 2: Management 22010/9/6~2010/9/8EIT-JSCEBangkok, ThailandKyoto city has various traditional cultures and industries. One of these is the production of Japanese sake, for which Fushimi-Ward is famous. This area has a lot of underground water of good water quality suited to making Japanese sake, and consequently. However, the new construction of a combined sewer system was started 3 years ago in Fushimi-Ward. The purpose of our study is to establish a 3D management model for underground water and examining the influence of the subterranean construction on the surrounding underground water level. The underground water of the Fushimi area has been protected by the Fushimi sake brewing union. They protect underground water from various potentially harmful construction projects. We believe that this management model will be useful in predicting the effects of the underground water levels. And, it is recognized that in the context of this model the new sewer does not cause adverse effects on underground water levels. We have to protect the underground water in the Fushimi area and in order to protect traditional Japanese sake.
PapersA study about the improvement of the interpretative accuracy of compound geophysical explorations by self-organizing mapsUnrefereedOtherCo-authorTatsuru Yamamoto;Harushige Kusumi;Tsuyoshi Yamamoto;Takeshi TsujiProceedings of EIT-JSCE Symposium on Engineering for Geo-Hazards:Earthquakes and Landslides-for Surface and Subsurface StructuresSession 2: Management 22010/9/6~2010/9/8EIT-JSCEBangkok, ThailandIn Japan, in the high economic growth period in 1960’s, a great number of slopes were formed to construct many roads. Now, the slopes have been aging, it is important to estimate the health of the aging slope and maintain slopes effectually. So, in situs, we usually carry out seismic wave method, surface wave method, electric method, electromagnetic wave method, frequency domain electromagnetic method and so on. However, there is not the technique to compound and interpret the result of each geophysical exploration in a numerical formula of the engineering now. Therefore, we notice to self-organizing maps (SOM) used widely in a field of the information processing engineering, and tried to interpret multidimensional data by integrating. In this paper, we classified the ground property by self-organizing maps. The classification result is relatively conformal with boring data. Therefore, it is recognized that it can be used to improve the interpretative accuracy of compound geophysical explorations. And, it can be shown that this technique is effective to estimate of the ground property of the aging slope.
Magazine articleOtherSingle-AuthorHarushige Kusumi2010/9~
Research reportUnrefereedOtherSingle-AuthorHarushige Kusumi2010/9~
Research reportUnrefereedOtherSingle-AuthorHarushige Kusumi2010/9~
OtherHarushige Kusumi44-452010/9~
Papers3D Seepage Flow Analysis using FEM to Examine the Effects on Underground Water Levels of Subterranean Construction in Kyoto-City, Japan.UnrefereedOtherCo-authorTakafumi Kitaoka;Harushige KusumiProceedings of the Fifth International Symposium in Science and Technolory at Cheng Shiu University 2010pp.113-1182010/8/23~2010/8/25College of Engineering, Cheng Shiu University Gradute School of Science and Engineering, Kansai UniversityKaohsiung, TaiwanKyoto city has various traditional cultures and industries. One of these is the production of Japanese sake, for which Fushimi-Ward is famous. This area has a lot of underground water of good water quality suited to making Japanese sake, and consequently. However, the new construction of a combined sewer system was started 3 years ago in Fushimi-Ward. The purpose of our study is to establish a 3D management model for underground water and examining the influence of the subterranean construction on the surrounding underground water levels. And, it is recognized that in the context of this model the new sewer system does not cause adverse effects on underground water levels. We have to protect the underground water in the Fushimi area and in order to protect traditional Japanese sake.
PapersAn experimental study on natural slope stability method for environment and landscapeUnrefereedOtherCo-authorShohei Hiroto;Harushige Kusumi;Katsumi TeraokaInternational Symposium in Science and Technology at Cheng Shiu University 20102010/8/23~2010/8/25College of Engineering, Cheng Shiu University Gradute School of Science and Engineering, Kansai UniversityTaiwanIn this study, we tried to clarify the reinforcement mechanism of a natural stability method by shearing test. The result that enlarging diameters of pressure plates increases reinforcement effect of this method comprehensively was obtained.
PapersExcavation simulation analysis of shallow tunnel in sandy ground by DEMUnrefereedOtherCo-authorTakahito Nishiki;Harushige KusumiInternational Symposium in Science and Technology at Cheng Shiu University 20102010/8/23~2010/8/25College of Engineering, Cheng Shiu University Gradute School of Science and Engineering, Kansai UniversityTaiwanIt is difficult that to set a clear standard concerning the design, because tunnels are excavated in various geotechnical conditions. Therefore, in general, the design is carried out still experientially, so it is required that analytical method that can appropriately reproduce the mechanics behavior on the natural ground. In this study, we tried excavation simulation of shallow tunnel by using distinct element method with high utility for a discontinuous ground. Using an analytical model of over burden 1D and 2D, we reproduced excavation of the invert by removing the particles in the invert part in the arbitrary time step, and examined the influence the time change of excavation gave to the natural ground in the surrounding.
PapersSoundness evaluation of decrepit slopes with the conversion analysis of geophysical dataIn refereedAcademic JournalCo-authorHarushige KUSUMI;Tsuyoshi YAMAMOTO;Makoto NAKAMURAInternational Journal of the JCRMVolume6, Number1,pp.7-112010/5~Japanese Committee for Rock MechanicsA large number of the shotcrete slopes constructed during Japan’s post-war economic boom are now more than 30 years old, and their structural deterioration is an ongoing problem. Therefore, it is necessary to accurately assess the stability and durability of these existing slopes. In this paper, we propose a technique to evaluate rock weathering and groundwater fluctuation behind the slope using a conversion analysis of seismic velocity and resistivity to porosity and water saturation of rocks. In the conversion analysis, porosity and water saturation of rocks are estimated with a non-linear optimization method based on the empirical relations of seismic velocity and resistivity to porosity and water saturation. This proposed technique was applied to a shotcrete slope along a road and verified with boring data. The porosity and water saturation estimated with the conversion analysis of seismic P-wave velocity and resistivity measured at the slope were interpreted to evaluate the rock grade and groundwater distribution of the rock behind the shotcrete slope. The interpretation was verified with the boring data to clarify the applicability of the proposed technique.
PapersDevelopment of the Continuous Wave Ground Penetrating Radar and It’s Application to Road Slopes InvestigationsIn refereedAcademic JournalCo-authorTsuyoshi YAMAMOTO;Shigeji YAMADA;Keiichi SUZUKI;Harushige KUSUMI;Toshifumi MATSUOKA2010/3~
Survey reportSlope Aging/Deterioration Survey by VLF-EM MethodIn refereedAcademic JournalCo-authorTsuyoshi YAMAMOTO;Yasumasa FUJIWARA;Harushige KUSUMI;Toshifumi MATSUOKA2010/3~
Magazine articleOtherSingle-AuthorHarushige KUSUMI2010/3~
PapersSIMULATION ANALYSIS OF EXCAVATION OF SHALLOW TUNNEL IN MULTILAYERED GROUND BY DEMUnrefereedCo-authorKentaro Ise;Harushige Kusumi2010/1/7~In this paper, we try the simulation analysis of excavation of shallow tunnel in multilayered ground using DEM. A simulation model is composed of 5 layers that values of physical properties are different, and different analytical parameters are gave to each layer. These values are decided by doing the simulation analysis of biaxial compression test by DEM in advance of excavationg simulation. Using the ground model and these analytical conditions, we tried to simulate a tunnel excavation, and it is recognized that the deformation of surrounding ground of tunnel and the effect of ground surface are inhibited by improving the layers of low-stiffness.
PapersIn refereedAcademic JournalCo-authorTatsuo Katayama;Takayuki Kozato;Hiromasa Kato;Harushige Kusumi;Toshifumi Matsuoka2010/1~The Japanese Geotechnical SocietyWhen survey the stability of river embankment, it is often that analyze it in several boring findings. It is concerned in the stability that was analyzed when embankment materials is different from the boring results, and there was the partially weak points of embankment materials. Frequency domain electromagnetic method (FDEM) can survey resistivity and is advantageous in that can survey quickly, continuously and high accuracy in the long section. This study examined applicability of FDEM and the principle of the FDEM and the result result of survey in river embankment.
PapersUnrefereedCo-authorTakafumi Kitaoka;Harushige Kusumi2009/12/1~Kansai Branch of The Japanese Geotechnical Society
Research reportEvaluation for physical property of the repeated 3-D electric survey on a slopeUnrefereedAcademic JournalCo-author2009/11/23~2009/11/25Recently, a lot of difficult localized torrential rains to forecast of calling a guerrilla downpour has been generated by the influence of global warming. Sediment disasters such as the mud flow, landslides have been generated by the guerrilla downpour in various places of Japan. In these natural damages, they are not only the transportation such as roads and railways but also it is current states to have done the house and the life damage. The establishment of the technique that can do the accuracy evaluation of shape and hydraulic characteristics of the discontinuity in the bedrock with the causal relation with the slope failure is hoped for. In this report, 3-D electric survey was executed before and after pouring water in the water level observation hole in the slope. The change rate of the resistivity was calculated by repeated survey. Position and strike and dip of weak parts were presumed from the change rate. Next, the saturation was presumed by applying the expression of Archie to the change rate of the electric resistivity. In addition, conversion from the electric resistivity that had been obtained because of 3-D electric survey to RQD was tried from the correlation of the resistivity and RQD. For the reasons stated above, 3-D electric survey is very useful for detail investigation for a slope.
PapersEngineering estimation method of decrepit slope by compound surveyUnrefereedCo-authorHarushige Kusumi;Tsuyoshi Yamamoto;Makoto NakamuraProceedings of EUROCK'2009-Rock Engineering in Difficult Ground Conditions - Soft Rocks and Karst557-6002009/10/30~ISRMCroatiaA large number of the shotcrete slopes constructed during Japan’s post-war economic boom are now more than 30 years old, and their structural deterioration is an ongoing problem. Therefore, it is necessary to accurately assess the stability and durability of these existing slopes. In this paper, we propose a technique that converts data from seismic velocity and electric resistivity to porosity and saturation, and we used the proposed technique to evaluate weathering and groundwater fluctuation behind the slope. Evaluation data from boring samples indicates that the distribution of porosity and saturation of rock mass around the slope as calculated using the proposed conversion system are highly similar to those of the real rock mass conditions.
PapersSimulation analysis of excavation of shallow tunnel in multilayered ground by DEMUnrefereedCo-authorKentaro Ise;Harushige KusumiProceedings of EIT-JSCE Joint International Symposium 20092009/9/7~2009/9/8EIT-JSCEBangkokThe collapse accident of shallow tunnel occurred under construction in Japan, and landslides of the volume of about 6,700 m3 flowed into the tunnel. Geology of the collapse location is composed of 5 layers, and the upper side of the tunnel is used as field of rice. It is supposed that factors of this collapse accident were low earth covering, distribution of sandy soil layer and cohesive soil layer that are low-stiffness, and so on. However, its details are not clarified. In this paper, we try to clarify the mechanism of this collapse in modeling of ground composed of 5 layers using two dimensional DEM. In this analysis method, value of physical properties of simulation object is controlled by interparticle parameters. Then, in advance of simulation of excavation, we tried the simulation analysis of biaxial compression test by DEM, and examined the parameters that are expressible of the simulation object. Using this analytical condition, we tried to simulate excavation of the shallow tunnel, and to examine the differences of ground behavior by geological structures. As the result of this analysis, it is recognized that subsidence of ground surface is inhibited by improving the layers of low-stiffness.
PapersMonitoring method for the aging slopeby geophysical explorationsUnrefereedCo-authorTatsuru Yamamoto;Harushige Kusumi;Tsuyoshi Yamamoto;Makoto NakamuraProceedings of EIT-JSCE Joint International Symposium 2009, EIT-JSCE2009/9/7~2009/9/8EIT-JSCEBangkokThis research is monitoring the ground condition inside the aging slope. The purpose of this research is to consider the value of the monitoring method with the ground evaluating system to estimate the aging slope health. In Japan, years of high economic growth in 1960’s, a great number of slopes were formed to construct many roads and most slope protection methods were to cover shotcrete on the slope. Now, slopes covered shotcrete have been aging. Therefore, there is a possibility that the slope failures occur due to the action of the weather and natural disaster such as climate variations, heavy rainfall and earthquake. It is important to establish the method monitoring the ground condition inside the slope to estimate the aging slope health and to effectually maintain slopes. In this research, first, we examined the ground condition in situs using seismic method and electric prospecting. Second, we changed each measured results of geophysical explorations into the porosity and saturation distribution with the ground evaluating system. This system uses the seismic velocity and the porosity - saturation relational expression (Wyllie 1956) and the resistivity and the porosity - saturation relational expression (Archie 1941).
PapersEstablishing the 3D model of the underground water management system at southern Kyoto-cityUnrefereedCo-authorTakafumi Kitaoka;Harushige KusumiProceedings of EIT-JSCE Joint International Symposium 20092009/9/7~2009/9/8EIT-JSCEBangkokThe Kyoto city has various traditional cultures and industries. One of these is the production of Japanese sake, for which Fushimi-Ward is famous. The purpose of my study is to establish a 3D management model for underground water. This area has a lot of ground water of good water quality suited to making Japanese sake, and consequently. The underground water of the Fushimi area has been protected by the Fushimi sake brewing union. They are famous for preventing the construction of the Nara subway suggested in the 3rd year of Showa. They protect underground water from various potentially harmful construction projects. However the construction of a sewer was started last year in Fushimi Ward. They worry about the effects of the construction. I believe that this management model will be useful in predicting the effects of the underground construction. This 3D model will be needed to save the underground water in the Fushimi area. We have to protect the underground water in the Fushimi area and in order to protect traditional Japanese sake.
PapersDevelopment of natural slope stability method considered environment and landscapeUnrefereedCo-authorShohei Hiroto;Hareshige Kusumi;Katsumi Teraoka;Tatsuo KatayamaProceedings of EIT-JSCE Joint International Symposium 20092009/9/7~2009/9/8EIT-JSCEBangkokIn this paper the study is slope stability. 70% of national land of Japan is mountain district, but countermeasures of slopes with the potentiality of collapse have not been progressed yet. Therefore, many slope failures occur caused by heavy reins or earthquakes in these years. Most slope protection methods were to cover shotcrete on the slope in 1960’s. However, the slope covered shotcrete have been deteriorating. Therefore, it is important to develop an effective slope stability method. Furthermore, it is necessary to consider environmental problems such as global warming. A new slope stability method to maintain natural environment on slopes is suggested in this paper. In the method, existing timber is hardly cut down. The method has advantage of cost and construction. Reinforcement materials of the method are rock-bolt, pressure-board and unit-net. The direct shear test was conducted. To get higher slope stability efficacy, the test was conducted with 2 types of the diameter of pressure-board. The objective of this study is to evaluate quantitatively the influence of pressure-board on the reinforcement mechanism.
PapersExperimental study of natural slope stability method using rock bolt and rope net -Effect of pressure plate-UnrefereedCo-authorShohei Hiroto;Harushige Kusumi;Katsumi Teraoka;Tatsuo KatayamaProceedings of collaboration between Asian countries in Life science, Information Technology and Civil Engineering, in Osaka, Japan160-1632009/8/23~2009/8/25International symposium in science and technology at Kansai University 2009Kansai UniversityIn this paper the study is slope stability. 70% of national land of Japan is mountain district, but countermeasures of slopes with the potentiality of collapse have not been progressed yet. Therefore, many slope failures occur caused by heavy reins or earthquakes in these years. Most slope protection methods were to cover shotcrete on the slope in 1960’s. However, the slope covered shotcrete have been deteriorating. Therefore, it is important to develop an effective slope stability method. Furthermore, it is necessary to consider environmental problems such as global warming. A new slope stability method to maintain natural environment on slopes is suggested in this paper. In the method, existing timber is hardly cut down. The method has advantage of cost and construction. Reinforcement materials of the method are rock-bolt, pressure-board and unit-net. The direct shear test was conducted. To get higher slope stability efficacy, the test was conducted with 2 types of the diameter of pressure-board. The objective of this study is to evaluate quantitatively the influence of pressure-board on the reinforcement mechanism.
PapersMonitoring method for the aging slope by seismic method and electric prospectingUnrefereedCo-authorTatsuru Yamamoto;Harushige Kusumi;Makoto NakamuraProceedings of collaboration between Asian countries in Life science, Information Technology and Civil Engineering, in Osaka, Japan164-1672009/8/23~2009/8/25International symposium in science and technology at Kansai University 2009Kansai UniversityThis research is monitoring the ground condition inside the aging slope. The purpose of this research is to consider the value of the monitoring method with the ground evaluating system to estimate the aging slope health. In Japan, years of high economic growth in 1960’s, a great number of slopes were formed to construct many roads and most slope protection methods were to cover shotcrete on the slope. Now, slopes covered shotcrete have been aging. Therefore, there is a possibility that the slope failures occur due to the action of the weather and natural disaster such as climate variations, heavy rainfall and earthquake. It is important to establish the method monitoring the ground condition inside the slope to estimate the aging slope health and to effectually maintain slopes. In this research, first, we examined the ground condition in situs using seismic method and electric prospecting. Second, we changed each measured results of geophysical explorations into the porosity and saturation distribution with the ground evaluating system. This system uses the seismic velocity and the porosity - saturation relational expression (Wyllie 1956) and the resistivity and the porosity - saturation relational expression (Archie 1941).
PapersEstablishing the semi 3D model of ground water advection and diffusion in the southern part of Kyoto basinUnrefereedCo-authorTakafumi Kitaoka;Harushige KusumiProceedings of collaboration between Asian countries in Life science, Information Technology and Civil Engineering, in Osaka, Japan168-1712009/8/23~2009/8/25International symposium in science and technology at Kansai University 2009Kansai UniversityThe research of my paper on the Ground Water is to predict the extent of the pollutant source. This research paper purposes, by making semi 3D model, to analyze semi 3D seepage flow, to predict ground water flow and to analyze the advection and diffusion of pollutant. The area of the simulation model is located in the southern part of Kyoto- prefecture, it has a typical ground water basin shape. We made the analysis of the each seepage flow by using semi 3D model we have made. The next, we made the simulation analysis of advection and diffusion of pollutant source to predict the extent of pollutant source. This pollutant source for this research is VOC and arsenic.
Research reportUnrefereedOtherSingle-AuthorHarushige Kusumi2009/8~
Research reportUnrefereedOtherSingle-AuthorHarushige Kusumi2009/8~
PapersSemi 3D simulation of ground water advection and diffusion for alluvial layer in part of Kyoto basinIn refereedCo-authorTakafumi Kitaoka;Harushige Kusumi;Ikue KusakaProceedings of prediction and simulation methods for geohazard mitigation,in Kyoto,Japan417-4222009/5/27~IS-Kyoto 2009Kyoto,JapanIn Kyoto, the underground water has been used for daily life for a long time, such as making tofu and dyeing kimono. Kyoto has a typical groundwater basin where there are three main rivers; Uji River, Kizu River and Katsura River. These rivers flow into the area between Tennou-zan and Otoko-yama mountains, then flow out to Osaka. For this reason, Kyoto basin saves enough underground water. Due to the fact that the underground water in Kyoto basin flows out from this point only, it is estimated that abundant underground water is saved. This research paper purposes to analyze semi 3D dimensional seepage flow, and to analyze the advection diffusion of pollutant, by making semi 3D model. The quantity of underground water is calculated to 21.1 billion tons and is comparable to the volume of water in Lake Biwa (25 billion tons). This research is focused on Joyo city which is located in the southern part of Kyoto prefecture. Kyoto basin is surrounded by mountains made of basement rock such as Paleozoic strata and granite. These mountains penetrate into the centre of the basin with a gentle gradient. The basement rock has a bowl shape and sedimentary layers made after the tertiary era accumulated on it. The basement rock is an impermeable bed; and, upon it, there are diluvial formations and alluvial formations consist of alternate layers of permeable and impermeable layers. The object of this analysis model is alluvial layer. I made the analysis seepage flow to get the speed of a moving fluid by using semi 3D model. The result of this analysis seepage is checked by measured groundwater level whether this model is high accuracy or not. The next, I made the simulation analysis of advection Diffusion of pollutant source to predict the expansion of pollutant source. The analysis time is for 50 years is set. This pollutant source for this research is mercury arsenic, and VOC.
Papers2D simulation analysis of failure of rock slope with bedding planes by DEMIn refereedCo-authorKentaro Ise;Harushige Kusumi;Satoshi OtsukiProceedings of prediction and simulation methods for geohazard mitigation,in Kyoto,Japan153-1572009/5/25~IS-Kyoto 2009Kyoto,JapanABSTRACT: As is known, there are many fractures and discontinuities in rock slope, and these might be often occurred the slope failure. In this paper, we try to clarify the mechanism of slope failure in modeling of rock slope with discontinuities using two dimensional DEM(distinct element method). However, it is difficult for DEM to express both of the continuum and discontinuities. So, we introduce the concept of bonding force, and it is made to be an applicable analysis method for the continuum. In the rock slope model in this simulation, the slope shape and the location of discontinuities can be arbitrarily set. The simulated rock slope has bedding planes, and we are reflected these in the model. Using this model, we try to simulate a failure rock slope, and to visible progress of fractures. As the results of this analysis, it is recognized that the discontinuities are formed surface and internally the rock slope. Moreover, the factors of failure can be visualized.
PapersEngineering estimation method of rock masses around the tunneling root by conversion analysis using seismic velocity and electric resistivityUnrefereedSingle-AuthorHarushige KusumiProceedings of International Rock Mechanics Symposium on The 2nd Thai Rock 2009,Keynote Lecturer55-702009/3~ThailandGeophysical exploration for such as tunnel construction is usually used on seismic method and electric method. However, seismic velocity and electric resistivity directly are not connected with a design for tunnel construction. Grasping the nature of rock masses, for example effective porosity and saturation, is very important for the design of tunnel. In this paper, new estimation method of tunnel construction by joint inversion using seismic velocity and electric resistivity are proposed. As the result, it is recognized that the distributions of porosity and saturation of rock mass around tunnel by this inversion system correspond with that of the real rock mass conditions.
Co-author2009/3~
Single-AuthorKUSUMI,Harushige2009/3~Society Exploration Geophysicists of Japan
Co-author2009/2~
Co-author2009/1/15~
PapersThe engineering evaluation method of decrepit slope by combination of seismic velocity and elactlic resistivityCo-authorHarushige Kusumi;Tsuyoshi Yamamoto;Makoto Nakamura2009/1/8~A lot of shotcrete slopes mainly constructed in Japan by 1970's pass through over 30 years, and their deterioration processes continued. So, it is required to grasp efficiently the stability and the durability of these slopes.
In this paper, using our proposed technique that converted from seismic velocity and electric resistivity to porosity and saturation, we tried to evaluate weathering and groundwater fluctuation behind the slope. As the result, it is recognized that the distribution of porosity and saturation of rock mass around slope evaluated by this conversion system agree with those of the real rock mass conditions by boring results.
PapersSimulation analysis of discontinuity progress of stratified rock mass by DEMCo-authorKentaro Ise;Harushige Kusumi;Tsuyoshi Yamamoto2009/1/8~As is known, there are many fractures and discontinuities in rock slope, and these are often the cause of failure. In this paper, we attempt simulation analysis and visualization of discontinuity by DEM. However, it is difficult for DEM to express both of the continuum and discontinuities. So, we introduce the concept of bonding force, and it is made to be an applicable analysis method for the continuum. Using this analysis method, we try to simulate a failure rock slope, and to visible progress of discontinuities. As the results of this analysis, it is recognized that the discontinuities are formed surface and internally the rock slope. Moreover, the factors of failure can be visualized.
Co-author2009/1/4~
OtherSingle-AuthorKUSUMI,Harushige2009/1~
LectureSingle-AuthorKUSUMI,Harushige2008/12/5~
PapersUnrefereedCo-author2008/12~Kansai Branch of The Japanese Geotechnical Society
PapersUnrefereedCo-authorTakafumi Kitaoka;Harushige Kusumi2008/11/25~
Single-AuthorKUSUMI,Harushige2008/11/6~Kansai Branch of The Japanese Geotechnical Society
Single-AuthorKUSUMI,Harushige2008/11/6~Kansai Branch of The Japanese Geotechnical Society
Research reportMaintenance and management of the road slopes using geophysical exploration methodsUnrefereedAcademic JournalCo-authorTsuyoshi Yamamoto;Junji Mitsushita;Harushige Kusumi;Tomofumi Koyama;Toshifumi Matsuoka;Yuzo Ohnishi2008/10~Shotcrete has been used to rainforce the road slopes, especially for cut slopes until 1970's in Japan. The slopes were decrepit since shotcrete slopes were constructed more than 30 years ago. Recently, the slope collapse caused by cavities existing behind the shotcrete and/or ground weathering was reported. Geophysical explorations have not been used practically to detect the cavities behind the shotcrete of the slopes so far. However, these geophysical exploration methods such as infrared thermal imaging, GPR, seismic exploration, electric and electromagnetic explorations have great potential to detect the cavities behind the shotcrete with non-destructive manners. In this paper, we applied different geophysical exploration methods to actual road slopes and observation/measuring results were compared. Obtained results from this study show that the geophysical exploration methods are effective methods to detect the cavities in the decrepit slopes. We also discussed the merit and demerit of each geophysical exploration method as well as their applicability for the decrepit slopes exploration.
PapersReinforcement mechanism of slope stability method with no cutting treesUnrefereedCo-authorYuki Chikata;Harushige Kusumi;Katsumi TeraokaProceedings of EIT-JSCE Joint International Symposium in Bangkok228-2312008/9~EIT-JSCEThe study in this paper is the slope stability. Although many slopes are prone to collapse, countermeasures against slope failures have not been progressed yet in Japan. Most slope protection methods were to cover shotcrete on the slope in 1960's. However, the slope covered shotcrete have been deteriorating. Therefore, the slope failures frequently occur due to the natural disaster such as heavy rainfall and earthquake. It is important to develop an effective slope stability method. Moreover, it is necessary to consider environmental problems such as global warming. A new slope stability method to maintain natural environment on slopes is suggested in this paper. The method has advantage of the cost and construction. The rock-bolt, the pressure-bored and the unit-net as reinforcement are used in the method. The model shear test was conducted. The test sample is one collected from a slope. The experimental conditions on water content and the content for clay fraction were changed for each case. The objective of this study is to evaluate quantitatively the influence of ground physical properties on the reinforcement mechanism.
Papers2D simulation analysis of failure of rock slope with bedding planes by DEMUnrefereedCo-authorKentaro Ise;Harushige KusumiProceedings of EIT-JSCE Joint International Symposium in Bangkok128-1312008/9~EIT-JSCEAs is known, there are many fractures and discontinuities in rock slope, and these might be often occurred the slope failure. In this paper, we try to clarify the mechanism of slope failure in modeling of rock slope with discontinuities using two dimensional DEM(distinct element method). However, it is difficult for DEM to express both of the continuum and discontinuities. So, we introduce the concept of bonding force, and it is made to be an applicable analysis method for the continuum. In the rock slope model in this simulation, the slope shape and the location of discontinuities can be arbitrarily set. The simulated rock slope has bedding planes, and we are reflected these in the model. Using this model, we try to simulate a failure rock slope, and to visible progress of fractures. As the results of this analysis, it is recognized that the discontinuities are formed surface and internally the rock slope. Moreover, the factors of failure can be visualized.
Papers2D simulation of advection diffusion on ground water flow on Joyo city in KyotoUnrefereedCo-authorTakafumi Kitaoka;Harushige KusumiProceedings of EIT-JSCE Joint International Symposium in Bangkok132-1352008/9~EIT-JSCEBangkokThe research of my paper on the Ground Water is to predict the extent of the pollutant source. These research paper purposes, by making 2D model, to analyze two dimensional seepage flow, to predict ground water flow and to analyze the advection diffusion of pollutant. The area of the simulation model is located in the southern part of Kyoto prefecture, it has a typical ground water basin shape. First, I made the 2D model with examining the material of the stratum, and divided 3 kinds of layers. That is divided into alluvial formations, clay formations, and, diluvial formations from the ground level. It is because that the most important purpose of this study is to the extension of the pollution in multiple layers. I made the analysis of the each seepage flow to get the speed of a moving fluid by using 2D model I have made. The next, I made the simulation analysis of advection Diffusion of pollutant source to predict the expansion of pollutant source. This pollutant source for this research is mercury.
Academic presentationCo-author2008/9~
Academic presentationCo-author2008/9~Japan Society of Civil Engineers
PapersNumerical simulation of failure behavior and crack propagation of rock slope by 3D denIn refereedAcademic JournalCo-authorSatoshi OHTSUKI;Harushige KUSUMI;Toshifumi MATSUOKA2008/8~Japan Society of Civil EngineersAs is khnouwn, there aer many fractures in rock slope, and there fractures are often the cause of failure. Especially, the mechanism of sliding failure depends on fractures in rock slope. In this paper, Three-dimensional numerical simulation for sliding failure by distinct element method are carried out. In relation to this simulation, the interparticle bonding force can tried to be expressed by bonding theory. It is tried to be simulated an actual sliding failure of rock slope. As the results of this simulation, it is recognized that this simulation can be expressed on this sliding failure phenomena. Moreover, the process of sliding failure can be visualied.
OtherSingle-AuthorKUSUMI,Harushige2008/8~
LectureSingle-AuthorKUSUMI,Harushige2008/7/18~
OtherSingle-AuthorKUSUMI,Harushige2008/5/29~
Single-AuthorKUSUMI,Harushige2008/5/27~
Academic presentationCo-author2008/5~
Academic presentationCo-author2008/5~
Academic presentationCo-author2008/5~
Academic presentationCo-author2008/5~
LectureOtherSingle-AuthorKUSUMI,Harushige2008/1/21~
PapersSimulation Analysis for Deformation Behavior of Shallow Tunnel Excavation by Distinct element MethodUnrefereedCo-authorKUSUMI,Harushige;KUSUMI Harushige2008/1/11~Japan Society of Civil EngineersIn case of urban NATM method for sandy soil ground of the urban areas in Japan, the behaviors of ground are complicated and uncertain during an excavation. The purpose of this research is a simulation of deformational behavior for a shallow tunnel using distinct element method, which is clearly beneficial in a behavior of large deformation and shearing in excavation of sandy soil ground. The, deformation and stress distribution of behavior of ground are considered by the difference between thicknesses of earth covering in an excavation of a tunnel, snd then an influence in a behavior of ground soil about a distance between tunnels during an excavation is considered.
PapersAnalytical Evaluation of Slope Failure Location Using Satellite Image and statistical AnalysisUnrefereedCo-authorYu Morimoto;Hiroshi Watanabe;Harushige Kusumi2008/1/10~Japan Society of Civil EngineersLandslide areas were evaluated using qualification theory 2 and geometric mean. To evaluate the areas, inclination, NDVI, geological features, and azimuth, which are considered closely related to the landslide, were used as explanatory variables. Comparing with these results, two indices were calculated, one is the overlooking ration, which is estimated as non-landslide areas for actual landslide-occurred areas, the other is overextraction ratio, which is estimated as landslide ares for actual non-landslide areas, As a result, at the overlooking ration, the geometric mean and the qualification theory 2 provide almost equal result, But the overextraction ratio, the former provides better results than the latter.
Single-AuthorKUSUMI,Harushige2008/1~
PapersUnrefereedCo-authorKusaka Ikue;Harushige Kusumi2007/11/16~
OtherSingle-AuthorKUSUMI,Harushige2007/11/10~
Academic presentationCo-author2007/11/9~2007/11/10
PapersUnrefereedOtherSingle-AuthorKUSUMI,Harushige2007/11~
PapersMonitoring of Groundwater Behavior with the Rainfall on a Rock Slope by Combination Geophysical ProspectingIn refereedAcademic JournalCo-authorMakoto Nakamura;Harushige Kusumi2007/9/15~JOURNAL OF THE SOCIETY OF MATERIALS SCIENCE, JAPAN
PapersAnalytical Evaluation of Slope Failure Location Using ASTER Image DataIn refereedAcademic JournalCo-authorHarushige Kusumi;Hiroshi Watanabe;Yu Morimoto2007/9/15~JOURNAL OF THE SOCIETY OF MATERIALS SCIENCE, JAPAN
PapersTwo-Dimensional Simulation Analysis of Rock Slope Failure by DEM Using Bonding Force between ParticlesIn refereedAcademic JournalCo-authorSatoshi Ohtsuki;Hrushige Kusumi;Toshifumi Matsuoka2007/9/15~JOURNAL OF THE SOCIETY OF MATERIALS SCIENCE, JAPAN
PapersPumping Simulation using 3D Ground Water Flow Model in KyotoUnrefereedCo-authorIkue Kusaka;Harushige KusumiProceedings of EIT-JSCE Joint Seminar on Rock Engineering 20072007/9~EIT-JSCEThe area of the analytical model is located in the southern part of Kyoto prefecture, it has a typical ground water basin shape and three rivers flow through it. The rivers flow into the area between two mountains, then flow out to Osaka. Due to the fact that the underground water in the basin flows out from this point only, it is estimated that abundant underground water is saved in the Kyoto basin. This research is focused on Joyo city which has long used plenty of underground water for the public, agricultural and industrial water supplies. In recent years, excessive pumping has caused subsidence and the depletion of water resources. This research purposes to establish a three dimensional groundwater flow model and make suggestions for the adequate management of the underground water by a pumping simulation analysis.
OtherSingle-AuthorKUSUMI,Harushige2007/9~
Academic JournalSingle-AuthorKUSUMI,Harushige2007/9~
OtherSingle-AuthorKUSUMI,Harushige2007/9~
Academic presentationCo-author2007/9~Japan Society of Civil Engineers
Academic presentationCo-author2007/9~Japan Society of Civil Engineers
Academic presentationCo-author2007/9~Japan Society of Civil Engineers
Single-AuthorKUSUMI,Harushige2007/8~
Single-AuthorKUSUMI,Harushige2007/7/20~
Papers3D simulation analysis of failure of rock slope with crack propagation by DEMIn refereedCo-authorSatoshi Ohtsuki;Harusige Kusumi;Toshifumi MatsuokaProceedings of the 11th Congress of The International Society for Rock Mechanics in Lisbon525-5282007/7~ISRMAs is known, there are many fractures in rock slope, and these fractures are often the cause of failure. Especially, the mechanism of sliding failure depends on fractures in rock slope. In this paper, we attempt to clarify the mechanism of slope failure in modeling of rock slope with discontinuities using three-dimensional distinct element method. However, it is difficult for distinct element method to express both of the continuum and the discontinuities. So, we introduce the concept of bonding force between particles into distinct element method, and it is made to be an applicable analysis method for the continuum. In the rock slope model in this analysis, the slope and the location of fractures can be arbitrarily set. The position of the fractures in the model is based on the result of the field investigation. And, the fractures were expressed by removing the bonding force. Using this analytical model, it is tried to simulate an actual sliding failure of rock slope. As the results of this analysis, it is recognized that this simulation can recreate this sliding failure phenomena. Moreover, the process of sliding failure can be visualized.
PapersEngineering estimation method of rock masses on the tunnelling root by conversion analysis using seismic velocity and electric resistivityIn refereedCo-authorH.Kusumi;M.NakamuraProceedings of the 11th Congress of The International Society for Rock Mechanics in Lisbon861-8642007/7~ISRMGeophysical exploration for such as tunnel construction is usually used on seismic method and electric method. However, seismic velocity and electric resistivity directly are not connected with a design for tunnel construction. Grasping the nature of rock masses, for example effective porosity and saturation, is very important for the design of tunnel. In this paper, new estimation method of tunnel construction by joint inversion using seismic velocity and electric resistivity are proposed. As the result, it is recognized that the distributions of porosity and saturation of rock mass around tunnel by this inversion system correspond with that of the real rock mass conditions.
OtherSingle-AuthorKUSUMI,Harushige2007/7~
Academic presentationCo-author2007/7~
OtherSingle-AuthorKUSUMI,Harushige2007/5~
Papers3D simulation analysis of sliding failure of rock slope by DEMUnrefereedCo-authorS.Ohtsuki;H.Kusumi;T.MatsuokaProceedings of the 11th International Symposium on Recent Advances in Exploration Geophysics in Kyoto84-872007/4~SEGJAs is known, there are many fractures in rock slope, and these fractures are often the cause of failure. Especially, the mechanism of sliding failure depends on fractures in rock slope. In this paper, we attempt to clarify the mechanism of slope failure in modeling of rock slope with discontinuities using three-dimensional distinct element method. However, it is difficult for distinct element method to express both of the continuum and the discontinuities. So, we introduce the concept of bonding force between particles into distinct element method, and it is made to be an applicable analysis method for the continuum. In the rock slope model in this analysis, the slope shape and the location of fractures can be arbitrarily set. The position of the fractures in the model is based on the result of the field investigation. And, the fractures were expressed by removing the bonding force. Using this analytical model, it is tried to simulate an actual sliding failure of rock slope. As the results of this analysis, it is recognized that this simulation can recreate this sliding failure phenomena. Moreover, the process of sliding failure can be visualized.
PapersUnrefereedAcademic JournalCo-author2007/3/10~
OtherSingle-AuthorKUSUMI,Harushige2007/3~
Co-author2007/2~
Papers3D analysis for excavation behavior of shallow tunnel by distinct element methodUnrefereedCo-authorT.Shimizu;H.Kusumi2007/1~Japan Society of Civil EngineersIn resently , the construction of shallow tunnels in big urban areas are increasing from the point view to be useful development in the urban space. However, it can not be clearfied that the mechanical behavior of the excavating shallow tunnels are much complicated.
In this paper, it is tried to estimate the mechanical behavior of shallow tunnel into sand during excavation by Distinct Element Method. Especially, the simulation of surface settlement each depth are done.
Papers3D simulation analysis of sliding failure of rock slope by demUnrefereedCo-authorS.Ohtsuki;H.Kusumi;T.Matsuoka2007/1~Japan Society of Civil EngineersAs is known, there are many fractures in rock slope, and these fractures are often the cause of failure. Especially, the mechanism of sliding failure depends on fractures in rock slope. In this paper, Three-dimensional simulation analysis and visualization for sliding failure by distinct element method are carried out. In relation to this simulation analysis, the tensile force rock mass can be tried to be expressed by bonding theory. It is tried to be simulated an actual sliding failure of rock slope. As the results of this analysis, it is recognized that this simulation can be expressed on this sliding failure phenomena. Moreover, the process of sliding failure can be visualized.
PapersSimulation analysis about shear behavior of a three-dimensional rock joint by distinct element methodUnrefereedCo-authorS.Takafuji;H.Kusumi2007/1~Japan Society of Civil EngineersAs is known, it is important to clarify the shear behavior of rock joint for the safty construction of rock structures. In this paper, the three dimentional simulation analysis of direct shear using distinct element method have been done. Especially, to reprent the tensile stress in rock mass, we tried to be applied on the bonding theory. As the results of this study, it is recognized that the results of this simulation with that of experiment.
OtherSingle-AuthorKUSUMI,Harushige2007/1~
Academic presentationCo-author2007~
PapersUnrefereedCo-authorY.Morimoto;H.Watanabe;H.Kusumi2006/12~Kansai Branch of The Japanese Geotechnical Society
PapersSimulation analysis of toppling failure of rock slope by distinct element method using bonding theoryUnrefereedCo-authorH.Kusumi;S.Ohtsuki;T.Matsuoka;Y.AshidaProceedings of 4th Asian Rock Mechanics Symposium ,CD-ROM11.22006/11/8~ISRM Intenational Symposium 2006As is known, there are many fractures in rock slope, and these fractures are often the cause of failure. Especially, the mechanism of toppling failure depends on fractures in rock slope. In this paper, Two-dimensional simulation analysis and visualization for toppling failure by distinct element method are carried out. In relation to this simulation analysis, the tensile force of rock mass can be tried to be expressed by bonding theory. The rock slope model with this analysis can be arbitrarily setting the slope shape and the location of fractures. The position of the fractures in the model is based on the result of the field investigation. And, the fractures are expressed by removing the bonding force. Using this analytical model, it is tried to be simulated an actual toppling failure of rock slope. As the results of this analysis, it is recognized that this simulation can be expressed on this toppling failure phenomena. Moreover, the proceternass of toppling failure can be visualized.
PapersUnrefereedCo-authorKUSUMI,Harushige;KUSUMI Harushige2006/11~
OtherSingle-AuthorKUSUMI,Harushige2006/11~
PapersMonitoring of groundwater behavior on a rock slope by combination geophysical prospectingCo-authorMakoto Nakamura;Harushige Kusumi137-1402006/11~The characteristic of the groundwater flow in a rock slope primarily depends on rock joint sets. In particular, the groundwater flow in a rock slope which has random joint sets is very complicated, and the specific methods which to monitor this flow have not been developed. In our past research, the systematization of geological evaluation technique that converted from seismic velocity and electric resistivity to porosity and saturation was proposed. In this paper, using this proposed technique, we tried to monitor the groundwater flow behavior during rainfall in rock slope site by changing of saturation in a rock slope.
PapersMonitoring of Groundwater Behavior on a Rock Slope by Combination Geophysical ProspectingCo-authorMakoto Nakamura;Harushige KusumiProceedings of The 8th SEGJ International Symposium635-6382006/11~SEGJThe characteristic of the groundwater flow in a rock slope primarily depends on rock joint sets. In particular, the groundwater flow in a rock slope which has random joint sets is very complicated, and the specific methods which to monitor this flow have not been developed. In our past research, the systematization of geological evaluation technique that converted from seismic velocity and electric resistivity to porosity and saturation was proposed. In this paper, using this proposed technique, we tried to monitor the groundwater flow behavior during rainfall in rock slope site by changing of saturation in a rock slope.
PapersEstimation method of rock masses in tunnel construction by conversion analysis using seismic velocity and electric resistivityIn refereedAcademic JournalCo-authorH.Kusumi;Y.Takahashi;M.Nakamura2006/10~Geophysical exploration for tunnel construction is usually used on seismic method and electric method. However, seismic velocity and electric resistivity directly are not connected with a design for tunnel construction. Grasping the nature of rock masses, for example effective porosity and saturation, is very important for the design of tunnel. In this paper, new estimation method of tunnel construction by conversion analysis seismic velocity and electric resistivity are proposed. As the result, it is recognized that the distributions of porosity and saturation of rock mass around tunnel by this analysis system correspond with that of the real rock mass conditions.
UnrefereedOtherCo-authorKUSUMI,Harushige2006/10~
Single-AuthorHarushige Kusumi2006/10~
PapersSimulation analysis of seepage and consolidation with thermal energy storage system using groundwaterUnrefereedCo-authorH.Kusumi;S.Hokoi;H.Tamai;M.Nakamura;K.IwamotoProceedings of Japan-AIT joint international symposiumpp.85-902006/7~The Japanese Committee for ISRM(ISRM National Grop)In this paper, the establishment of the underground Thermal Energy Storage system with the effective utilization of the underground water is studied as one of the solution for these problems. The system effectively utilizes the cut-off walls installed at the time of the construction of underground building frames of high-rise buildings, saving the exhaust heat from the air conditioning in the underground aquifer in the building frames rather than releasing it into the air during summertime to utilize the exhaust heat in the wintertime, which can possibly lead to the establishment of the effective underground water utilization that contributes to both the energy saving measures and the countermeasure against heat-island phenomenon.
Single-AuthorKUSUMI,Harushige2006/6~2006/7
PapersAn Estimation Method of In-situ Rock Masses by Characteristic of Electric Resistivity for Jointed Rock Mass ModelIn refereedAcademic JournalCo-authorMakoto Nakamura;Harushige KusumiJournal of the society of materials science2006/5/15~In this paper,two kinds jointed rock mass model are used.One is the discontinuity model,which is made to change the open width of discontinuity by inserting various number of filter papers.The other is the porous model,in which micro opening cracks are generated inside the rock by heating with the electricity muffle furnace.Using these models,the characteristics of resistivity for the jointed rock mass are examined by comparing with the field data obtained by electrical prospecting.As the result,it is shown the possibility to evaluate the porosity of in-situ rock mass from the relationship bitween porosity and resistivity of the porous model.
PapersSimulation analysis for shear behavior mechanism of rock joint using distinct element methodIn refereedAcademic JournalCo-authorKUSUMI Harushige;S.Tatsumi;Y.Ashida;T.MatsuokaJournal of the society of materials science,Japan2006/5/15~In this paper, simulation analysis for shearing mechanism of rock joint by Distinct Element Method is perfoemed.The purpose of this study is to analyze the sliding and shearing behavior of discontinuity surface in the shear process and destruction locations of the roughness is tried to be clarified by numerical simulation.The characterization of this simulation model can be applied on bonding force between particles.As the results of this study,it is recognized that the shearing and sliding behavior of discontinuous plane using this simulation model correspond with the experimental results and that this simulation model are useful.The distribution of internal stress during shear on discontinuity plane can be visualized.
PapersThe engineering evaluation method of rock masses by combination of seismic velocity and electric resistivityCo-authorHarushige KUSUMI;Yasutaka TAKAHASHI;Makoto NAKAMURAProceedings of the 10th International Symposium on Recent Advances in Exploration Geophysics RAEG2006pp.187-1922006/3/30~RAEG2006Geophysical exploration for tunnel construction is usually used on seismic method and electric method.However,seismic velocity and electric resistivity directly are not connected with a design for tunnel construction.Grasping the nature of rock masses,for example effective porosity and saturation, is very important for the desingn of tunnel. In this paper,
new estimation method of tunnel construction by joint inversion using seismic velocity and electric resistivity are proposed. As the result, it is recognized that the distributions of porosity and saturation of rock mass around tunnel by this inversion system correspond with that of the real rock mass conditions.
PapersThe Relation Between Strength of Ground Improvement and P-Wave Velocity when Using the Jumbo-Jet Special Grouting MethodUnrefereedIn-house publicationCo-authorWu-Te KO.;Harushige KusumiTechnology Reports of kansai UniversityVol.48,pp.71-762006/3/21~Shield construction works are the most popular method employed at the Taiwan Mass Rapid Transit project and underground sewage projects. Joining of the shaft and the tunnel is generally high-risk work because of potential dangers, such as ground collapse and tunnel breaks. Accordingly, we measured the strength of geological improvement at the shield shaft and its P-wave velocities using a boring core and test piece. The test results show that the relationship between the unconfined compressive strength and P-wave velocities is very close. P-wave velocities can be used to estimate density. P-wave velocities will probably become a quality control test yardstick in future.
PapersGeological evaluation of ground for tunnel construction by combination geophysical prospectingsUnrefereedCo-authorM.Nakamura;M.Urayama;H.KusumiProceedings of international symposium on underground excavation and tunnellingpp.573-5782006/2~
Academic presentationCo-author2006~Japan Society of Civil Engineers
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Academic presentationCo-author2006~Japan Society of Civil Engineers
Harushige Ksumi2006~
BookPractical Question and Answers for a Basic Understanding of Landslides -Living with Slopes-MonographCo-authorKUSUMI HarushigeJapan Society of Civil Engineers2005/12/20~
PapersMonitor method of landslide slope with optical fiber sensorIn refereedCo-authorShoji Maki;Harushige kusumi;Hideo Yoshiura;Minoru Sakagami2005/12/7~Kansai Branch of The Japanese Geotechnical Society
PapersSimulation analysis of seepage and consolidation with thrmal energy storage system using groundwaterUnrefereedCo-author2005/11/25~
UnrefereedOtherCo-authorKUSUMI,Harushige2005/10~
PapersSimulation analysis of Shallow Tunnel Excavation by Distinct Element MethodCo-authorH.Kusumi;T.Shimizu;K.FujiiProceedings of EIT-JAPAN-AIT2005 Seminar on Geo-Risk Engineering and Managementpp.98-1002005/9/27~For the purpose of the effective urban development,construction opportunities of the city tunnel are increasing.But,the design techniques for the shallow and large section tunnel are unsettled.Generally,Finite Element Method is used for analysis of tunnel excavation.But,FEM is the analysis for continuity,so it is impossible to analyze discontinuities. Then,we tried to analyze the tunnel excavated actions by Distinct Element Method,the analysis for a discontinuity.Using this method,it enables to visualize ground action excavated,Distribution of displacement,compressive stress,and Subsidence of ground surface.This research simulates behaviors of the ground excavated by DEM,and considers the rational design of city tunnel.
PapersEstimation method of rock masses of tunnel construction by Joint Inversion method using seismic velocity and resistivityCo-authorH.Kusumi;Y.Tkahashi;M.NakamuraProceedings of EIT-JAPAN-AIT2005 Seminar on Geo-Risk Engineering and Managementpp.124-1282005/9/27~Geophysical exploration for tunnel construction is usually used on seismic method and electric method.However,seismic velocity and electric resistivity directly are not connected with a design for tunnel construction.Graping the nature of rock masses,for example effective porosity and saturation,is very important for the design of tunnel. In this paper,new estimation method of tunnel construction by joint inversion using seismic velocity and electric resistivity are proposed.As the result,it is recognized that the distributions of porosity and saturation of rock mass around tunnel by this inversion system correspond with that of the real rock mass conditions.
PapersAcademic JournalCo-author2005/9~
Academic presentationCo-author2005/9~Japan Society of Civil Engineers
Academic presentationCo-author2005/9~Japan Society of Civil Engineers
Academic presentationCo-author2005/9~Japan Society of Civil Engineers
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PapersEstimation Method of Rock Masses of Tunnel Construction by Joint Inversion Method Using Seismic Velocity and ResistivityCo-authorHarushige Kusumi;Yasutaka Takahasi;Makoto NakamuraProceedings of EIT-JAPAN-AIT Joint Workshop 2005124-1282005/9~EIT-JAPAN-AITGeophysical exploration for tunnel construction is usually used on seismic method and electric method. However, seismic velocity and electric resistivity directly are not connected with a design for tunnel construction. Grasping the nature of rock masses, for example effective porosity and saturation, is very important for the design of tunnel. In this paper, new estimation method of tunnel construction by joint inversion using seismic velocity and electric resistivity are proposed. As the result, it is recognized that the distributions of porosity and saturation of rock mass around tunnel by this inversion system correspond with that of the real rock mass conditions.
LectureAcademic JournalKUSUMI,Harushige2005/8~
PapersUnrefereedCo-authorKUSUMI,Harushige;;;;KUSUMI Harushige2005/7/28~The Japanese Geotechnical Society
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BookMonographCo-authorKUSUMI,Harushige2005/5/30~
PapersSimulation analysis of shear behavior of rock joint by distinct element methodCo-authorH.kusumi;T.Matsuoka;Y.Ashida;S.TatsumiProceedings of Impact of Human Activity on the Geological Environmentpp.281-2862005/5/18~In this paper,simulation analysis for shearing behavior of rock discontinuity by distinct element method is proposed.The purpose is behavior of surface of discontinuity in the shear process and destruction situation of the roughness are clarified by numerical simulation.By using this analysis method,it was possible that the behavior of the test-piece model,the shear strength and the dilation behavior are analyzed.And,distribution situation of the internal stress in the shear process was clarified by visualizing the stress which affects each paricel.
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Keynote addressSimuration analysis of rock mechanics and rock engineering by distinct element methodUnrefereedOtherSingle-AuthorKUSUMI HarushigeProceedings of Korean Society for Rock Mechanics2005/3/31~Korean Society for Rock MechanicsInvited 20050330-20050401
PapersTrue tri-axial test using distinct element methodCo-authorJunichi TAKEKAWA;Yoshinori SANADA;Yasuhiro YAMADA;Yuzuru ASHIDA;Harushige KUSUMIProceedings of the 9th International Symposium on Recent Advances in Exploration Geophysics in Beijingpp.45-492005/3~Many kinds of rock test for engineering properties have been carried out to obtain rock kinetic properties. However it is difficult to visualize inside rock specimen during laboratory tests. This study's objective is to reconstruct true tri-axial tests using Distinct Element Method (DEM).
At first, tri-axial compression test is carried out to know correlations between analytical properties and rock properties obtained through compression test like cohesion and internal friction angle. Next, true tri-axial test is simulated using properties above.The result of the simulation, it was clarified that the simulation result can reconstruct a laboratory test qualitatively.
Academic JournalSingle-AuthorKUSUMI,Harushige2005/3~
LectureSingle-AuthorKUSUMI,Harushige2005/3~
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OtherCo-authored chapterKUSUMI,Harushige2005/3~
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PapersEstimation method of rock masses of tunnel construction by joint inversion method using seismic velocity and resistivityUnrefereedCo-authorYasutaka TKAHASHI;Harushige KUSUMI;Makoto NAKAMURAProceegings of the 34th Symposium on Rock Mechanics2005/1/7~Japan Society of Civil EngineersGeophysical exploration for tunnel construction is usually seismic method and electric method. BUt seismic velocity and resistivity directly do not be connected with a design for tunnel construction.Grasping the nature of rock masses,for example effecive porosity and saturation,is very important for the design of tunnelling.In this paper,new estimation method of tunnel construction by joint inversion using seismic velocity and resistivity is proposed.This inversion system are making clear effective porosity and saturation of rock masses.
PapersSEISMIC IMAGING AHEAD OF TUNNEL FACE USING FULL WAVE INVERSION METHODUnrefereedCo-authorShigeyuki TAKAHASHI;Harushige KUSUMI;Toshifumi MATSUOKA;Yuzuru ASHIDAProceedings of the 34th Symposium on Rock Mechanics2005/1/7~The technology which survey the geological condition of ahead for tunnel face in the mountain tunnel are well known for the seismic imaging ahead of tunnel face.However it is not classified this method can be applied to all rock mass conditions,it is important to research the degree of application of this technique because rock mass that including many fracture zones are existing many location in japan.
In this paper ,the full wave inversion method is applied to the simulation date.This recognized that the seisemic imaging ahead of tunnel face using this method is very useful for the investigation of geological condition.
PapersEstimation method of rock masses of tunnel construction by joint inversion method using seismic velocity and resistivityCo-authorYasutaka Takahashi;Harushige Kusumi;Makoto Nakamura345-3502005/1~Japan Society of Civil EngineersGeophysical exploration for tunnel construction is usually seismic method and electric method. But seismic velocity and resistivity directly don’t be connected with a design for tunnel construction. Grasping the nature of rock masses, for example effective porosity and saturation, is very important for the design of tunneling. In this paper, new estimation method of tunnel construction by joint inversion using seismic velocity and resistivity is proposed. This inversion system are making clear effective porosity and of rock masses.
Academic presentationCo-author2005~Japan Society of Civil Engineers
OtherSingle-AuthorKUSUMI,Harushige2005~
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Academic presentationCo-author2005~Society Exploration Geophysicists of Japan
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PapersIn refereedCo-authorN.Miyamoto;H.Kusumi2004/11/25~
PapersSimulation of earth tunnel excavation based on trap door test by distinct element methodCo-authorK.Fujii;H.Kusumi;T.Matsuoka;Y.AshidaProceedings of The 6th International Workshop on the Application of Geophysics to Rock Engineeringpp.68-732004/11~In case of the excavation working of tunnel, the initial stress is opened wide, and local subsidence occurs all over the foundation and it becomes the cause by which this gives destruction and modification in a surrounding natural ground. And in order to grasp the mechanical behavior of shallow tunnel excavation in the intersection, two dimensional trap door tests have been developed and performed. With changing overburden pressures, the variation of vertical earth pressure acting on trap doors, the distribution of earth pressure and the settlement of ground surface have been measured. Then, it tried to perform the simulation of trap door test by Distinct Element Method, and from a viewpoint of the modification action of trap door or the model foundation, this research compared with the experiment result and the analysis result, and the validity was examined by it.
PapersSimulation analysis of shear behavior of rock joint by distinct element methodCo-authorH.kusumi;T.Matsuoka;Y.Ashida;S.TatsumiProceedings of the ISRM International Symposium 3rd ARMSpp.1287-12922004/11~In this paper, simulation analysis for shearing behavior of rock discontinuity by distinct element method is proposed. The purpose is behavior of surface of discontinuity in the shear process and destruction situation of the roughness are clarified by numerical simulation. By using this analysis method, it was possible that the behavior of the test-piece model, the shear strength and the dilation behavior are analyzed. And, distribution situation of the internal stress in the shear process was clarified by visualizing the stress which affects each particle.
PapersImproved seismic imaging ahead of tunnel faceCo-authorJ.Takekawa;Y.Ashida;H.KusumiProceedings of the ISRM International Symposium 3rd ARMSpp.251-2542004/11~Sometimes the design of tunnel construction is required to modify after the construction has started because of little information of geological condition ahead of tunnel face. So, it is important to obtain the accurate imaging ahead of tunnel face. Seismic imaging ahead of tunnel face is used to survey geological condition for safety and economic design and support. Previous research shows that three-component data is efficient to estimate geological boundary. Three component data can estimate incident direction of reflected waves from its amplitude. So, it is difficult to estimate correctly from noisy data. In this paper, we propose a method reducing the affection of noise. We apply a cross-correlation function to improve the specification of incident direction using three-component geophones.
Single-AuthorKUSUMI,Harushige2004/11~2005/1
Single-AuthorKUSUMI,Harushige2004/10~
BookPumping simulation using 3D groundwater flow model of southern-yamashiro district at kyoto basinCo-authorKUSUMI Harushige;N.MiyamotoProceedings of EIT-JAPAN-AIT Workshop on Geo-Engineering in Groundwater, Land Subsidence, Exploration Geophysics and Underground Rock Engineering2004/9~
Academic presentationCo-author2004/9~Japan Society of Civil Engineers
Academic presentationCo-author2004/9~Japan Society of Civil Engineers
Academic presentationCo-author2004/9~Japan Society of Civil Engineers
Academic presentationCo-author2004/9~Japan Society of Civil Engineers
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Academic presentationCo-author2004/9~Japan Society of Civil Engineers
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PapersUnrefereedAcademic JournalCo-authorH.Kusumi;Y.Ashida;T.MatsuokaTsuchi-to-KisoVol.52 No.7 Ser.No.558 pp.35-392004/7~The Japanese Geotechnical Society
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PatentsUnrefereedCo-author2004/6/18~
BookApplication of Geophysical Methods to Engineering and Environmental ProblemsCo-authorKUSUMI HarushigeProceedings of The Society of Exploration Geophysics of Japan157―1982004/5~
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BookOtherCo-authorKUSUMI,Harushige2004/3~
PapersSimulation analysis of the ground action at the time of the tunnel digging using Distinct Element MethodUnrefereedCo-authorK.Fujii;H.Kusumi;T.Matsuoka;Y.Ashida2004/1~
PapersSimulation analysis of the ground action at the time of the tunnel digging using Distinct Element MethodUnrefereedCo-authorK.Fujii;H.Kusumi;T.Matsuoka;Y.AshidaProceedings of 33rd Symposium of Rock Mechanics2004/1~Japan Society of Civil EngineersIn case of excavation working of underground, initial stress is opened wide, and local subsidence occurs all over the foundation and it becomes the cause by which this gives destruction and modification in a surrounding natural ground. And in order to grasp the mechanical behavior of shallow tunnel excavation in the intersection, two dimensional trap door tests have been developed and performed. With changing overburden pressures, the variation of vertical earth pressure acting on trap doors, the distribution of earth pressure and settlement of ground surface have been measured. Then, it tried to perform the simulation of a trap door test by Distinct Element Method, and from a viewpoint of the modification action of trap door or the model foundation, this research compared the experiment result and the analysis result, and the validity was examined by it.
PapersSimulation analysis for shear behavior mechanism of rock joint using distinct element methodUnrefereedCo-authorKUSUMI Harushige;S.Tatsumi;Y.Ashida;T.MatsuokaProceedings of the 33rd Symposium of Rock Mechanics2004/1~Japan Society of Civil EngineersIn this paper, simulation analysis for shearing behavior of rock discontinuity by distinct element method is proposed.
The purpose is behavior of surface of scontinuity in the shear process and destruction situation of the roughness are clarified by numerical ulation. By using this analysis method, it became possible that the behavior of the test-piece model, the shear strength and the die ration behavior are analyzed. And, distribution situation of the internal stress in the shear process was clarified by visualizing the stress which affects each particle.
PapersSeismic imaging ahead of tunnel faceCo-authorJ.Takekawa;H.Kusumi;Y.AshidaEIT-JAPAN-AIT Joint Workshop on Modern Computation Method In Rock Engineeringpp.33-372003/11~This paper proposes an accurate imaging technique for looking ahead of tunnel face using three-component geophones with tunnel blasting as seismic sources. The procedure is as follow ; 1)Using three-component receivers installed on the tunnel walls, record the seismic signal reflected from the reflectors ahead of tunnel face; 2)Determine the direction of incidence of the reflected wave; and 3)Image the reflector using equi-travel time ellipsoid weighted by the incident direction of the reflected wave. The proposed technique is applied to datas otained at actual construction sites. The excavation of the tunnels proved that the results were consistent with the geological observation of the walls.
BookMonographCo-authorKUSUMI,Harushige2003/11~
PapersApplication of seismic imaging ahead of tunnel face method for rockmass with continuous fracture zoneIn refereedAcademic JournalCo-authorH.Kusumi;Y.Ashida;T.Matsuoka;T.Noguchi;N.Sano;T.Ikumaseismic imaging;fracture zone;ahead of tunnel face;tunnel2003/9~The seismic imaging method which surveys geological condition of ahead for tunnel face in the mountain tunnel are well known. However, it is not classified that this method can be applied to all of rock mass conditions,especially,in case of the rock masses including many fracture zones,it is important to research the degree of application of this technique because these rock masses are exciting many locations in Japan. In this paper, this technique was applied on Hida tunnel construction site. As the results,it is clean that the geological conditions can be obtained by this method.
PapersDevelopment of monitoring systems for rock slope by optical strain sensorIn refereedAcademic JournalCo-authorlaboratory test;monitoring on site;slope;rock mass;optical strain sensor2003/9~The optical fiber is used on the main parts of optical communication technique. However in recently, it is recognized that the optical fiber is having the characterizations for strain sensor. In this paper, the fundamental tests in related with the output prosperties fir compression and tension of optical fiber were carried out and it is clarified that the relations between this output and strain of fiber is linear. Furthermore, the optical fiber is applied on the joint displacement measurment in rock mass slope. As the results, it is recognized that the displacement of joints can be measured high accuracy.
PapersSimulation of Hopkinson effect by discrete element methodCo-authorT.Matsuoka;H.Ksumi;Y.Ashida;T.Watanabe10th International Congress on Rock Mechanicspp.813-pp.8162003/9~The technique of various kinds of numerical analysis offered remarkable results tp explication of many rock mechanical phenomena. These techniques regarded a rock stratum as a continuum body and solved the governing equation of continuum mechanics by using finite difference method,finite element method and/or others. Using numerical analysis based on continuum mechanics, however,the simulations of destruction phenomena caused by elastic waves and on the other hand,the elastic wave propagation which generated by fracturing events are quite difficult. In this paper, we express a rock stratum by a granular body model and develop a simulation technique can simulate both wave phenomena and destruction phenomena at once. The DEM(discrete element method) simulation results are compared with finite difference solutions of elastic wave equation. Furthermore,we simulate Hopkinson effect by this proposed method.Hopkinson effect is famous as a destruction phenomenon caused by elastic wave propagation.
PapersThe Predictives Estimation Technique of Rock Mass and Spring Water on the Tunneling Root by Combination SurveyIn refereedAcademic JournalCo-authorKUSUMI,Harushige;;KUSUMI Harushigeelastic wave;porosity;saturation;conversion analysis;resistivity2003/6~In case of constructing the mountain tunnel,geological survey such as seismic prospecting and electrical prospecting is often carried out. However, the support design based on these prospecting results is not quantitative,so it is often differ from actual geological condition. The other side,it is important from safety and economical efficiency to grasp accurately the geological condition beforehand in design and construction. In this paper,the systematization of geological evaluation technique that converted from seismic velocity and electric resistivity to porosity and saturation was discussed. As the results, the evaluation system of rock mass using the both of seismic velocity and electric resistivity are proposed, and it is recognized that this system can be applied on the in-site rock mass site.
PapersA Study of Elastic Waves and Hopkinson Bar Effect Using Granular ModelIn refereedAcademic JournalCo-authorHopkinson bar;Poisson's ratio;Elastic waves;Continuum model;Granular model2003/5~The Technologies of the numerical analysis made remarkable progress to understand the geoscience phenomena. In these approaches ,however,the subsurface has been modeled by a continuum medium and the finite difference method,finite element method or boundary element method is adopted to solve the govering equations. Therefore,it is hard to treat the discontinuous phenomena. We applied a granular model to represent the bedrock medium to handle this problem. In this paper, we introduced the normal and shear springs to connect particles in granular model and this leads the Poisson's ratio of the medium changeable. We simulated the elastic wave propagation phenomena and also the Hopkinson bar phenomena in the granular model. The simulation results show this approach is quite useful for analyzing the fracturing and/or discontinuity phenomena in the subsurface.
PapersPreparation of Jointed Rock Mass Model Using Intact Rock Specimen and Its Characteristics of ResistivityIn refereedAcademic JournalCo-authorCharacteristics of resistivity;Discontinuity;Heating;Intact rock specimen;Jointed rock mass2003/5~Before the underground structures such as tunnels will be constructed,because of the sensitivity for the water included for the rock mass, electrical prospecting for geological surveys is often executed. However, the relationship between resistivity and the physical of the rock mass has not quantitatively been clarified. Especially, in the jointed rock mass, it is important to grasp the influence of joint for the resistivity. In this paper,2 kinds of jointed rock mass model are made. One is the discontinuity model, which is made to change the open width of discontinuity by intervening the various number of filter paper for discontinuity. The other is the heated models,which is generated the micro opening crack inside of the rock by heating by the electricity muffle furnace. And then,using these models,the characteristics of resistivity for the jointed rock mass are examined.
PapersThe Shear Strengh Formula Including Joint Aperture and Roughness for Natural Rock JointIn refereedAcademic JournalCo-authorNatural rock joint;Shear strength;Failure envelope;JRC;Aperture condition2003/5~In this paper,using natural rock joint specimens and direct shear-testing machine ,the influences of joint aperture and roughness on shear behavior of rock joint are experimentally investigated.The index of joint roughness is applied on JRC,and in case of joint aperture,the new index can be suggested. It is recognized that this new index is independent of JRC. As the results of this experiments ,this is very useful index to make indication of joint aperture condition,and the shear strength formula including joint roughness and aperture can be proposed.
Papers3D basic rock mass structure and undergroundwater condition of Kyoto basinIn refereedCo-authorKUSUMI Harushige;H.Shibata;K.InoueProc. of international symposium on underground environmentpp.365-3682003/3~
PapersSeveral Examinations in Development of Simultaneously Measuring System for P and S Wave Velocity and Electric Resistivity of Rock SamplesCo-authorMakoto Nakamura;Harushige KusumiProceedings of The 7th International Symposium on Recent Advances in Exploration Geophysics in Kyoto (RAEG2003)241-2462003/1~RAEG2003Kyoto,JapanIt is an important laboratory test the elastic waves of rock specimens are measured, and in general the velocities of two types elastic waves are used. In this paper, it is tried to develop the simultaneously measured system for P, S wave velocities and electric resistivity of a rock sample and its laboratory equipment. P and S wave are analytically found out from the recorded waves. And on the same time, the electric resistivity of this rock specimen is measured by geo science (GS) method. In the development of this system, the examination of sensor position was carried out. Furthermore, P, S wave velocities and electric resistivity obtained from this system are compared with these quantities given by the usual measurement methods. As the results, it is confirmed that this measurement system is useful for the various rock specimens.
PapersDevelopment of Simultaneously Measuring System for P and S Wave Velocity and Electric Resistivity of Rock Samples and Investigation of Its ApplicabirityIn refereedAcademic JournalCo-authorM.Nakamura;H.Kusumi;Y.OkudaJournal of Geotechnical EngineeringNo.722/3-61 pp.381-3862002/12~Japan Society of Civil EngineersThe measurement of elastic wave velocity is effective as the technique which grasps elastic characteristics of rock, and recently the evaluation by S wave is mainly carried out. In this paper, it is tried to develop the simultaneously measured system for P,S wave velocities and electric resistivity of a rock sample and to manufacture the laboratory equipment. In this system, P and S wave are analytically found out from the recorded waves. And on the same time, the electric resistivity of this rock specimen is measured by geo science method. Furthermore, P,S wave velocities and electric resistivity obtained from this system are compared with these quantities given by the usual measurement methods.As the results, it is confirmed that this measurement system is useful for the various rock specimens.
Keynote addressShear behavior of rock jointsUnrefereedSingle-AuthorKUSUMI Harushige2002/11~Invited Lecture
PapersThe development of monitoring system for rock slope by optical fiber sensorIn refereedCo-authorKUSUMI Harushige;K.Narita;Y.Hasegawa;T.Katayama;K.MoriyamaProc. of Eurock2002pp.253-2602002/11~International Society for Rock MechanicsOn basis of the result, actual fracture rock slope optical fiber sensor V-shaped and injecting static crush agent in the rock slope, the rock mass was artificially displaced, and output chracteristics of that time optical fiber sensor were examined.
BookMonographCo-author2002/11~
PapersSeismic imaging ahead of tunnel face with three component geophonesIn refereedCo-authorKUSUMI Harushige;Y.Ashida;T.Matsuoka;T.WatanabeProc.of 72th SEG Annual meetingCD-ROM2002/10~Society of explolation and GeophystsThe present paper proposes an accurate imaging technique for looking ahead of tunnel face using three-component geophones with tunnel blasting and TBM vibration as seismic sources.
PapersShear behavior of rock joint considering both of joint aperture and roughnessIn refereedCo-authorKUSUMI Harushige;T.Sugino;J.Y.LeeProc. of 3th Korea-Japan rock engineering symposium(ISRM regional symposium)pp.169-1762002/9~In this paper,the effects of which the shear behavior of rock joint is depended on the magnitude of aperture condition are discussed.
BookRock MechanicsIn refereedMonographCo-author2002/3~
PapersShear Behavior of Soft Rock Exposed to Alternate Dry and Wet under Constant StressIn refereedAcademic JournalCo-authorH.Kusumi;A.Shiraga;T.KataeReprinted from Journal of The Society of Materials Science, JapanVol.51, No.2, pp.146-1512002/2~The Society of Materials Science, JapanThe surface of cutting rock slope has exposed to alternate dry and wet conditions for a long time, and they are weathered. We developed direct shear testing apparatus that can expose soft rock specimen to alternate dry and wet conditions under constant shear and normal stress, and are investigated about relationship between deformation properties and the shear behavior of soft rock under dry and wet conditions.
PapersIn refereedCo-authorH.Kusumi;S.Iwai;T.Fukumasa;Y.Kitamura2002/1/25~
PapersMonitoring method of rock slope located V shape by optical fiber sensorIn refereedCo-authorKUSUMI Harushige;Kazuma Narita;Minoru Maeda;Yuko Kawabata2002/1~
PapersInterpretation Technique of Geological Survey by Combination of Seismic Velocity and Electric ResisitvityCo-authorMakoto Nakamura;Yuzuru Ohtomo;Harushige Kusumi;Ethukichi KondoProceedings of The 6th International Symposium on Recent Advances in Exploration Geophysics in Kyoto (RAEG2002)47-522002/1~RAEG2002Kyoto,JapanIn this paper, the relations among electric resistivity, seismic velocity, porosity and saturation of various rock specimens investigated by laboratory tests are clarified. In addition, it was attempted to combine the seismic velocity and the electric resistivity and to evaluate the porosity and saturation. As the results, it is recognized that this assessment method can be useful for geological survey.
PapersCo-authorHarushige Kusumi;Yoichi Hatakenaka;Usao Nishikata;Makoto Nakamura;Yoshiyuki Okuda187-1942001/11~
BookAcademic JournalCo-authorKUSUMI,Harushige2001/10~
PapersApplication of Several Electric Resistivities of Rock Masses for Tunnel Supporting DesignIn refereedCo-authorMakoto Nakamura;Harushige Kusumi;E. KondoCD-ROM2001/10~IS-Kyoto 2001Kyoto,JapanIn this paper, the relations among electric resistivity, porosity and degree of saturation of various rock specimens investigated by laboratory tests, are compared with the field measurement data obtained by electric prospecting. In addition, it is tried that these results obtained laboratory test are applied on tunnel supporting design, and that using this relations, the rock masses around existing tunnel were estimated. As the results, it is recognized that this assessment method can be used on tunnel supporting design.
PapersThe effect of saturation and porosity given on resistivity of various rock specimens and its application for rock masses estimation methodIn refereedCo-authorH.Kusumi;Y.Hatakenaka;U.Nishigata;M.Nakamura;Y.Okudapp.187-1942001/9~The Japanese Geotechnical Society
PapersDevelopment of Simultaneously Measured System for P, S Wave and Electric Resistivity of Rock Samples and its ApplicationCo-authorHarushige Kusumi;Y. Okuda;Makoto Nakamura149-1512001/9~ISRMIt is an important laboratory test which the elastic waves of rock specimens are measured, and in general the velocities of two types elastic waves are used. In this paper, it is tried to develop the simultaneously measured system for P, S wave velocities and electric resistivity of a rock sample and its laboratory equipment. P and S wave are analytically found out from the recorded waves. And on the same time, the electric resistivity of this rock specimen is measured by science (GS) method. Furthermore, P, S wave velocities and electric resistivity obtained from this system are compared with these quantities given by the usual measurement methods. As the results, it is confirmed that this measurement system is useful for the various rock specimens.
PapersCo-authorMakoto Nakamura;Harushige Kusumi31-342001/7~
PapersSeismic Imaging Technique of Looking Ahead of Tunnel Face by Use of 3 Components ReceiversIn refereedAcademic JournalCo-authorKUSUMI Harushige;Y.Ashida;T.Matsuoka&H.KusumiJournal of Geotechnical EngineeringNo.680/3-55 pp.123-1292001/6~Japan Society of Civil EngineersIn the present paper, an accurate imaging technique for looking ahead of tunnel face by use of 3 components receivers is proposed.
1)To receive the reflected waves from the geological boundaries by use of 3 components receivers.2)To detect the incident direction of reflected waves.
3)To perform imaging by use of equi-travel time planes using the weight according to incident direction in order to decrease the generation of false image.The propesed technique was applied to the actual field data. Consequently, the imaging results showed a good agreement with the observation report after completion of tunnel.
PatentsUnrefereedCo-author2001/3/23~
PapersDevelopment of Simultaneously measured system for P,S wave and electric resistivity of rock samples and its applicationCo-authorHarushige Kusumi;Makoto Nakamura;Yoshiyuki Okuda;Kazuhiko Nishida87-912001/1~Japan Society of Civil EngineersIt is an important laboratory test which the elastic waves of rock specimens are measured, and in general the velocities of two types elastic waves are used. In this paper, it is tried to develop the simultaneously measured system for P,S wave velocities and electric resistivity of a rock sample and laboratory equipment. P and S wave are analytically found out from the recorded waves. And on the same time, the electric resistivity of this rock specimen is measured by geo science method. Furthemore, P.S wave velocities and electric resistivity obtained from this system are compared with these quantities given by the usual measurement methods. As the results, it is confirmed that this measurement system is useful for the various rock specimens.
PapersA Method to Estimate Continuous Distribution of Strength in Improved Layer of Ground by S-Wave Reflection MethodIn refereedAcademic JournalCo-authorH.Kusumi;Y.Ashida;K.Nishida;T.Kawaguchi;T.HayashiJournal of Geotechnical EngineeringNo.666/3-53 pp.333-3382000/12~Japan Society of Civil EngineersBefore construction of any structures on surface or substance of alluvial clay layer, the cement mixing methods have been used frequently to construct an improved layer at certain depth of ground. However, the confirmation of improved layer is performed by only boring and laboratory testing. The present paper are discussed about the confirmation method using s-wave reflection method, and it is tried that the S-wave distribution of improved layera is obtained by velocity analysis. Furthermore, the relation between the uniaxial compression strength of improved layer specimens by boring and S-wave velocity of improved layer by the velocity analysis are discussed, and the continuous distribution of uniaxial compression strength on improved layer can be accurately obtained.
PapersCharacterization of Electrical Resistivity for Intact and Jointed Specimens and its Application for In Situ Rock Mass AssessmentCo-authorHarushige Kusumi;Yoichi Hatakenaka;Usao Nishikata;Makoto Nakamura;Kazuhiko NishidaProceedings of An Int. Conf. on Geotechnical&Geological Eng.(GeoEng2000)CD-ROM2000/11~The electrical resistivity prospecting is becoming very useful for ground investigation, because new computer methods have been developed and detailed electric resistivity distribution in ground can be indicated. However, characterizations of resistivity for rock mass are not clarified, and it is not sufficiently understood that the measured resistivity values can indicate conditions of rock mass. In this paper, using 17 types of intact rock specimens and 2 types of rock specimens with single joint, the resistivity of these specimens are measured in the laboratory. From these measured data, the relation between resistivity of the rock specimens, saturation, porosity and aperture of discontinuity are discussed. Furthermore, these results obtained by between tests are applied to rock mass assessment in a tunnel.
PapersMonitoring of Groundwater Behvior Caused by Rainfall Fracture Zone of Rock Slope using Electric Resisitivity MethodCo-authorKUSUMI,Harushige;Makoto Nakamura;K. NishidaProceedings of 8th International Symposium on Landsliders871-8762000/6~
PapersAnalysis of the Exploration Looking Ahead of
Tunnel Face by VariousUnrefereedCo-authorNOGUCHI/satoshi;KUSUMI/harushige;ASHIDA/yuzuru;NISHIDA/kazuhikoProceedings of Exploration Looking Ahead of Tunnel Face Symposium2000/5~Japan Society for Civil EngineersWhen constructing tunnels, it is important to predict forward geological condition. But these detailed and quantitative informations cannot always be obtained from surface investigations. Because of this, the development of geological survey system ahead of face has been advanced. In the present paper, an analysis of the exploration ahead of tunnel face by using various artificial sources is proposed. This study was applied to the actual field data. The results of analysis by the seismic sources using hammer, iron ball and giant breaker show a good agreement with wall observation report after completion of tunnel.
BookApplication Manual of Geophysical Prospectings for Civil EngineeringIn refereedMonographCo-authorThe Society of Exploration Geophysicists of Japan2000/5~
PapersEstimation method of aperture condition with rock joints and its application for shear equationUnrefereedCo-authorKUSUMI Harushige;NISHIDA Kazuhiko;SAKAI Takashi;NAKAMURA Hitoshi;YAMADA Tproceedings of the Eurock 2000 Symposium2000/3~International Society for Rock Mechanics at EuropeABSTRACT: The factors of discontinuity plane which affect the shear behavior of rock joint are the strength of intact rock, roughness, aperture etc. In these factors, there is many researches in related with the roughness. However, although the aperture condition of rock joint is important factor, the many researches with this factor have not been performed. In this paper, the effects of which the shear behavior of rock joint is depended on the magnitude of aperture condition are discussed Especially, the numerical index representing the degree of the aperture condition with rock joints is opposed, and furthermore, we applied this index on the shear strength equation proposed by authors.
PapersCharacterization of Strength and Deformation
Behavior of Soft Rock Exposed to Alternated Dryand Wet under Constant StressesIn refereedCo-authorH.Kusumi;C.Matsushita;T.Katae;K.NishidaProceedings of 30th Rock Mechanics SymposiumNo.30 pp.36-422000/1~Japan Society of Civil EngineersThe surface of cutting rock slope has exposed to alternate dry and wet conditions for a long time, and they are weathered. We developed direct shear testing apparatus that can expose soft rock specimen to alternate dry and wet conditions under constant under constant shear and normal stress, and are investigated about relationship between deformation properties and the shear behavior of soft rock under dry and wet conditions.
BookSite Investigation and Stabilization Methods for Rock SlopesIn refereedMonographCo-authorKUSUMI/HarushigeJapan Society for Civil Engineers1999/10~
PapersEstimation Method of Aperture Condition with Rock Joint and its Application for Shear EquationIn refereedAcademic JournalCo-authorH.Kusumi;T.Sakai;K.Nishida;H.NakamuraJournal of Geotechnical Engineering Japan Society of Civil EngineeringNo.631/3-48 pp.505-5101999/9~Japan Society of Civil EngineersThe factors of discontinuity plane which affect the shear behavior of rock joint are the strength of intact rock, roughness, aperture etc. In these factors, there is many researches in related with the roughness. However, although the aperture condition of rock joint is important factor, the many researches with this factor have not been performed. In this paper, the effects of which the shear behavior of rock joint is depended on the magnitude of aperture condition are discussed. Especially, the numerical index representing the degree of aperture condition with rock joints is proposed, and furthermore, we applied this index on the shear strength equation proposed by authors.
PapersSimulation analysis on Geophysical Prospecting of Improved Thin Layer by S-Wave Reflection Method and its ApplicationIn refereedAcademic JournalCo-authorH.Kusmi;Y.Ashida;K.Nishida;R.EharaJournal of Geotechnical Engineering Japan Society of Civil EngineeringNo.624/3-47 pp.245-2531999/6~Japan Society of CivilEngineeringBefore construction of any structures on surface or subsurface of alluvial clay layer, the cement mixing method is used frequently to construct a thin improved layer at certain depth of ground. However, the confirmation of improved layer is performed by only boring and laboratory testing. In the present paper, the confirmation method using s-wave reflection method, and the simulation analysis which as certain continuity of an improved thin layer is proposed. Especially in this analysis, the proposed method for the model at a thin layer of high velocity which lies between two layers of low velocity is examined, and the results of this simulation analysis are found to be applicable construction site.
PapersCharacterization of aperture distribution and
permeability in single joints under continingpressureIn refereedAcademic JournalCo-authorH.Ksumi;T.Kaneda;K.Nishida;K.UeedaJournal of the society of materials science1999/4~Hydromechaniacal behavior of rock masses is influenced in a decisive way by the presence of joints. It is largely responsible for seepage occurring through the rock mass and is the most sensitive elements with respect to deformation under stress changes. Hydromechanical studies of fractured rock masses must therefore pay special attention to the role of joints and to correct assessment of their properties.
In this paper, an experimental study was carried out in granite specimens included a single joint with the purpose of obtaining the hydromechanical properties under hydrostatic stress conditions. The test results are then presented and analyzed, and the relation ship between the roughness of joint surface and hydromechanical properties are discussed.Key words: Single joint, Permeability, Discontinuity plane, Fractured rock
PapersCharacterization of Aperture Distribution and Permeability in Single Joints under Confining PressureIn refereedAcademic JournalCo-authorH.Ksumi;T.Kaneda;K.Nishida;K.UeedaReprinted from Journal of The Society of Materials Science, JapanVol.48, No.4, pp.341-3451999/4~The Society of Materials Science, JapanHydromechanical behavior of rock masses is influenced in a decisive way by the presence of joints. It is largely responsible for the seepage occurring through the rock mass and is the most sensitive elements with respect to deformation under stress changes. Hydromechanical studies of fractured rock masses must therefore pay special attention to the role of joints and to corrct assessment of their properties.In this paper, an experimental study was carried out in granite specimens included a single joint with the purpose of obtaining the hydromechanical properties under hydrostatic stress conditions. The test results are then presented and analyzed, and the relationship between the roughness of joint surface and hydromechanical properties are discussed.
PapersApplication of several electric resistivity of
intact rocks to field rock massesUnrefereedCo-authorProceedings of the 29th symposium of rock meachnicspp.210-2141999/1~Japan Society of Civil EngineersBefore the underground structures such as tunnels and large caverns will be constructed, seismic prospecting and electrical prospecting for geological surveys are often executed. However, it is few that the velocity of elastic wave and the electric resistively obtained from these prospecting methods are directly used to the design.In this paper, the relations among electric resistively, porosity and degree of saturation of various rock specimens were investigated by laboratory tests were compared with the field measurement data obtained by electric prospecting. As a result, it is clarified that the characterization of electric resistively of some rock cores can be applied on the estimation of in-situ rock mass.
PapersObservation methods of displocement on rock slope
by optic strain sensorUnrefereedCo-authorProceedings of the 29th symposium of rock meachnicspp.280-2841999/1~Japan Society of Civil EngineersThe optics fiber is usually used to the basic main lines of informatics transmission. In recently, it has been attracted special interest that the optics fiber can be used to the strain sensor lines applicable on the some characterizations of this fiber.
In this paper, the observation methods of the displacement on rock slope by the fiber optics strain sensor are discussed. Especially, the some fundamental studies in related with the output characterizations of rock slope and the field measurements applied on the natural rock slope by the fiber optics strain sensor are done.
CommentaryOn the effective factor for Stability of Sock SlopeUnrefereedSingle-AuthorKUSUMI/harushigeProceedings of 29th Rock Mechanics Symposium1999/1~Japan Society for Civil Engineers
FieldworkUnrefereedSingle-AuthorKUSUMI,Harushige1999~
PapersMonitoring of Improved Thin Layer by S-Wave Reflection MethodIn refereedAcademic JournalCo-authorH.Kusumi;Y.Ashida;K.Nishida;R.Ehara;T.KawaguchiBUTSURI-TANSA Geophysical ExplorationVol.51 No.6 pp.688-6941998/12~Society of Exploration Geophysicists of JapanBefore construction of any structures on surface or subsurface of alluvial clay layer, the cement mixing method is used frequently to construct a thin improved layer at certain depth of ground. However, the effective confirmation of improved thin layer is performed by only boring and laboratory testing. In the present paper, the confirmation method of an improved thin layer by using S-wave reflection method are discussed. Especially, prospecting before and after ground improvement by S-wave reflection method, it is tried to develop the monitoring system of improved thin layer. This monitoring system is found to be applicable to construction sites.
Key words: reflection method, monitoring, S wave improvement, thin improved layer
PapersShear behavior of soft rock exposed to alternate dry and wet under constant stresses.UnrefereedCo-authorKUSUMI Harushige;MATSUSITA Chikao;NISHIDA KazuhikoProceeding of the 2nd international symposium on hard soils-soft rockspp.253-2581998/10~ABSTRACT: The surface of cutting rock slope has exposed to alternate dry and wet conditions for a long time, and they are weathered. Especially, in Japan the soft rock easily receive this phenomena. We developed direct shear testing apparatus that can expose soft rock specimen to alternate dry and wet conditions under constant shear and normal stress, and are investigated about relationship between deformation properties and already received dry and wet conditions, it is recognized that these shear strength decrease compared with the soft rock which is not received dry and wet condition, and these ratio of shear strength is related to normal stress and dry and wet cyclic number.
PapersA formulation of shear strength for rock joints included two or three different asperitiesUnrefereedCo-authorH.Kusumi;K.Teraoka;K.NishidaProceeding of the 3rd international conference on mechanics of jointed and faulted rockpp.235-2421998/4~ABSTRACT: We carried out the experimental study in order to investigate the influence of the surface roughness of rock joints on the shear strength of those. We made some artificial plaster specimens which have three different types of surface profiles, I.e. regular triangular profiles, irregular triangular profile and JRC profiles. All of these specimens are applied on the direct shear test. On the other hand, before direct shear test, in order to investigate the method of quantitative estimation of quantitative estimation of irregular joint profile, the measurement and the analysis of joint profile for each specimen using laser profilometer have conducted. As the results, we proposed the shear strength criteria which expressed by the power function, and it is recognized that this criteria is applied to various rock joints.
BookGeophyical prospecting for slope surveyIn refereedMonographCo-authorKUSUMI Harushige;Y.Ito;A.Takeuchi1998/1~
FieldworkA Study of Underground Water Resources on South Yamashiro Area, Kyoto-Fu.Single-AuthorKUSUMI Harushige1998~
FieldworkMonitoring of groundwater behaviour in rock slope by electric resistivity method.Single-AuthorKUSUMI Harushige1998~
FieldworkInvestigation of Rock Slope Damage by Earthquake and It's CountermeasureUnrefereedSingle-AuthorKUSUMI Harushige1998~
UnrefereedSingle-AuthorKUSUMI,Harushige1998~1999
PapersEffect of structural anisotropy on deformation properties of granite under cyclic loading ISRM International Symposium on Environmental and Safety Concerns in Underground Construction 1st ARMS (Seoul)UnrefereedCo-authorKUSUMI Harushige;MINE Yukihisa;NISHIDA KazuhiroProceeding of ISRM international symposium in 1st asian Rock mechanics.pp.433-4381997/10~International Society for Rock Mechanics at AsiaABSTRACT: The effects of the structural anisotropy on the deformation properties of granite under cyclic loading have not been clarified. In this paper, four types of granite specimens are prepared with an angle θ of the structural anisotropic plane to the loading axis of 0., 30., 60. and 90.respectively and cyclic loading tests are performed under uniaxial compression. The stress amplitude levels used in this experiment are 0-30%, 20-50% and 40-70% of the uniaxial compression. The uniaxial compressive strength for this granite. As the results, for the stress amplitude level of 0-30%: the elastic modulus under the cyclic loading is approximately constant. However it is recognized that the increase of axial strain during the cyclic loading is loading is largest for the specimen with θ of 30., and it's value under ten thousands cyclic numbers corresponds to 1.27tunes as much as the axial strain given by 20% stress for the uniaxial compressive strength, and that it's uniaxial compressive strength after cyclic loading is lowest for the all stress amplitude conditions. Further, It is clarified that it's volumetric strain only indicates the negative value under 50% and 70% stress levels under cyclic loading.
PapersEffect of Structural Anisotropy on Deformation
Properties of Granite under Cyclic LoadingIn refereedAcademic JournalCo-authorH.Kusumi;Y.Mine;K.NishidaReprinted from Journal of the Society of Materials Science JapanVol.46, No.9, pp.1029-10341997/9~The effects of structural anisotropy on the deformation properties of granite under cyclic loading have not been clarified. In this paper ,four types of granite specimens are prepared with an angle of the structural anisotropic plane to the loading axis of 0., 30., 60. and 90. receptively ; and cyclic loading tests are performed under uniaxial compression. The stress amplitude levels used in this experiment are 0-30%, 20-50% and 40-70% of the uniaxial compressive strength of this granite. As the results, for the stress amputate level of 0-30%, the elastic modulus under the cyclic loading is approximately constant. However, it is recognized that the increase of axial strain during the cyclic loading is largest for the specimen with of 30., and its value under ten thousands cyclic numbers corresponds to 1.27 times as much as the axial strain given by 20% stress for the uniaxial compressive strength, and that its uniaxial compressive strength after cyclic loading is lowest for the all stress amplitude conditions. Further more, it is clarified that its volumetric strain indicates only a negative value under 50% and 70% stress levels under cyclic loading.
Key words: Granite, Structural anisotropy, Cyclic loading , Stress amplitude level, Axial strain, Volumetric strain
PapersRelationship between apparent electric resistivity and rain fall in fracture zone of rock slope by continious measurmentIn refereedAcademic JournalCo-authorH.Kusumi;M.Nakamura;K.NishimuraJournal of Japan Society for Engineering Geology1997/6~It is well known that the groundwater in rock slope mainly flow joint, fracture zone, fault and sidcontinuty plane. In this paper, using Dipole-Dipole electric method, the electric resistivities are continuously measured in a rock slope during five rain fall patterns with the measuring line crissubg a fracture zone, and the relationship between the change of apparent electric resistively and the rain fall are discussed.
As the results, making a comparison between fracture cones and the other rock mass, the characteristics of the change of apparent electric resistivity is quite different, and the other rock ass, the relationship between the change of apparent electric resistibility and rain fall can be approximated with an exponential function.Key words : rock slope, fracture zone, apparent electric resistively, continuos measurement
PapersStudy on new formulation of shear strength for irreqular rock jointsUnrefereedCo-authorH.Kusumi;K.Teraoka;K.NishidaProceedings for 36th U. S. Rock Mechanics Symposium and ISRM International Symposiumpp.323-3321997/6~As is known, Ladanyi's shear strength criterion is only applied to the regular triangular joints. The purpose of this study is the proposal of a new shear strength criterion which is applied to irregular joints. First of all, the appropriate estimation method of irregular joint profiles must be quantitatively estimated. The artificial plaster specimens which have four different JRC profiles, and the sandstone specimens including the irregular joint are applied on the direct shear test. The other hand, before direct shear test, in order to estimate the irregular joint surface profile of those specimens, the measurement and analysis of joint surface profile for each specimen using laser profilometer have conducted. As the results, the new experimental equations which exactly represent the shear strength parameters included in Ladanyi's shear strength criterion was proposed, and it is recognized that this new experimental equations can be applied for the rock specimens having the irregular joint.KEYWORDS
Discontinuities, Failure, Joints, Laboratory Tests, Shear Strength, Statistical Analysis
PapersDamage Mechanism of Nishinomiya City High School Building due to Hyogoken-Nanbu EarthquakeIn refereedAcademic JournalCo-authorK.Nishida;S.Yao;H.Kusumi;T.Nishigata;A.ItouVol.45 No.3 Ser.No.470 pp.17-201997/3~The Japanese Geotechnical Society
PapersStudy on shear strength for rock joints with irregular surface profileIn refereedCo-authorH.Kusumi;K.Terauchi;T.Suzuki;K.NishidaProceedings of the 28th symposium of rock mechanicspp.173-1791997/1~We carried out the experimental study in order to investigate the influence of the surface roughness of rock joints on the shear strength of those. We made some artificial plaster specimens which have three different types of surface profiles, I.e.regular triangular profile, irregular triangular profile and JRC profiles. Al of those specimens are applied on the direct shear test. On the other hand, before directshear test, in order to investigate the method of quantitative estimation of irregular joint profile, the measurement and the analysis of joint profile for each specimen using laser profilometer have conducted.
As the results, we proposed the shear strength criteria which is expressed by the power function, and it is recognized that this criteria is applied to various rock joints..Key Words : rock joint , shear strength, JRC, surface roughness, failure criteria, direct shear test.
FieldworkA study on the prospecting methods for landslide researchSingle-AuthorKUSUMI Harushige1997~
PapersShear behaviour of joint roughness with two types of asperitiesUnrefereedCo-authorH.Kusumi;K.Nishimura;T.SuzukiProceedings of prediction and performance in rock mechanics and rock engineering, Eurock'96pp.127-1341996/9~ABSTRACT: It is considered that the surface profile of rock joint roughness considerably affects the shear behaviour of rock joints. Irregular joint surface consists of various asperity shapes and gradients, and it seems that the shear behavior might be dominated by the large gradient asperities, But the mechanism is not enough clarified . We made nine irregular triangular plaster specimens which include two types of triangular asperities and subjected them to direct sheartests. The results show that, when the asperities of the specimens are not sheared, the shear behaviour depend on the large gradient asperity . When the two phenomena of shearing and sliding are simultaneously observed, the shear strength of the joint roughness depends on the number of the large gradient asperities.
FieldworkInvestigation of Earthquake damage for Structual foundation and ground at Hanshin area.UnrefereedSingle-AuthorKUSUMI Harushige1996~
PapersInfluence of asperity gradient on shear strength of rock jointUnrefereedAcademic JournalCo-authorH.Kusumi;T.Suzuki;K.NishidaResearch reports of relationship between discountinuity rock mass and structurer1995/12~The Japanese Geotechnical Society
PapersProspecting for Small Inclined Jacking Pipe by the Electromagnetic MethodIn refereedAcademic JournalCo-authorH.Kusumi;K.Kagami;H.TanakaBUTSURI-TANSA (Geophysical Exploration)Vol.48 No.2 pp.99-1061995/4~Society of Exploration Geophysicists of JapanThe electromagnetic system has been applied to search for small jacking pipe. This system consists of an oscillation coil set up on the top of a jacking pipe and a detection coil on the ground surface.
The authors have already shown the following: in the case of a horizontal jacking pipe, it is possible to locate the top of the jacking pipe and determine it's depth.When the jacking pipe is inclined, it is very important that the inclination of the jacking pipe can be accurately measured during construction work.
In this paper, the analytical solutions of the magnetic field produced by an inclined circular oscillation coil are presented, and basic experiments related to prospecting for inclined jacking pipe by the electromagnetic method are carried out. As a result of these experiments, it is clear that the inclination of jacking pipe can be measured by this prospecting method included the proposed corrective method of measuring value.Key words: electromagnetic method, small jacking pipe, inclination.
Research reportDevelopmental Study of Land Settlement measured system using by magnet and magnetic resistivity elementUnrefereedOtherCo-authorH.Kusumi;K.Taniguchi;K/Kimura1995/3~Grant-in-Aid for Scientific Research
Research reportEstimation of future settlement based on real measurment values given by magnetic settlement systemUnrefereedIn-house publicationCo-authorKUSUMI/Harushige;TANIGUCHI/Keiichiro;NISHIMURA/SosukeResearch Report of ecotecnology, Institude of Technology Kansai University1995/3~
PapersStudy on Actual using Conditions of Groundwater Resources in Minamiyamashiro District at Kyoto PrefectureIn refereedAcademic JournalCo-authorH.Kusumi;S.Nishimaki;N.FurumiyaJournal of Groundwater HydrologyVol.37 No.1 pp.55-671995/2~Japanese Association of Groundwater HydrologyMinamiyamasiro district at Kyoto prefecture is located in the southern part of Kyoto basin. The groundwater in this basin has been used water service, agriculture and industry. We have study about the groundwater resources in Minamiyamashiro district, especially, we investigated agriculture, industry and water service wells respectively in 1983 and 1993 using the hearing inquiry method, and tried to grasp the pumping and the use conditions of groundwater in this area. In this paper, as compared with these data getting by the hearing inquiry in 1983 and 1993, the changing on the actual using conditions of groundwater and on the quantity of the pumping groundwater for ten years in this area are discussed. As the results, it is recognized that the total pumping quantity of the groundwater increase about 10,000,000 ton for ten years, and that the increase of pumping for water services are marked.Key words: Minamiyamashiro district, hearing inquiry method, pumping quantity
PapersRelationship between Shear Behaviour and the Estimation of Rock Joint Surface by Statistical MethodUnrefereedCo-authorH.Kusumi;T.Tsujiuchi;T.Suzuki;K.NishidaProceedings the 26th Symposium of Rock Mechanicspp.91-951995/1~Committee of Rock Mechanics J.S.C.E.The shear behaviour of rock mass depends on the mechanical properties of discontinuity, and these are listed on aperture, strength, weathering, roughness, etc. Especially, it is known that the roughness of discontinuity surface directly affects shear strength of rock mass, however, the relationship between shear behaviour and roughness of discontinuity surface is not completely clear. In this paper, the roughness of discontinuity surface is measured by the laser displacement meter. Using these date, the roughness of discontinuity surface are statistically analyzed, and we are done the direct shear test. As the result, it is recognized that the analytical initial dilation angle obtained by the statistical method are corresponded with the dilation angle obtained by direct shear test under lower normal stress condition.
PapersStudy on Formulation of Shear Strength for Irregular Rock JointsIn refereedAcademic JournalCo-authorH.Kusumi;K.Teraoka;K.TaniguchiJournal of Geotechnical Engineering Japan Society of Civil Engineers1994/9~ON this paper, we have tried to apply Ladanyi's shear strength criteria to irregular joints, which is only applicable for regular joints. The measurement and analysis of joint profiles have conducted to estimate quantitative processing of irregular joint roughness, and direct shear tests on plaster-sand specimens which have JRC profiles given by Barton, and coerce grain sandstone have been done. As the results, we proposed experimental equations which exactly represent the shear strength parameters included in Ladanyi's shear strength criteria, and it becomes also applicable for irregular joints rearranging the shear strength parameters by substituting the experimental equations proposed by authors.
PapersRelationship between Estimation Method of Joint Roughness and Chracterization of Shear Strength for Rock JointUnrefereedCo-authorHarushige KUSUMI;Katsumi Teraoka;Keiichiro Taniguchi;Kazuhiko NishdaProceedings of the 9th Japan Symposium on Rock Mechanicspp.491-4961994/1/20~1994/1/21
PapersMonitoring of groundwater behaviour in rock slope by dipole-dipole electric resistivity technique.UnrefereedCo-authorKUSUMI Harushige;TANIGUCHI Keiichiro;NAKAMURA MakotoProceedings of Safety and Enviroment Issues in Rock Engineering(A. A. Balkema)1993/6~ABSTRACT: The characteristics of the groundwater flow in a rock primarily depende on rock joint sets. In particular, the groundwater flow in at rock slope which has random joint sets is very complicated, and the specific methods which to monitor this low have not been developed. Using dipole-dipole electric resistivity technique, we tried to monitor the groundwater flow behaviour during rainfall in a rock slope site. The interesting resistibity change which was continuously measured at this site is reported, and the relationship between the resistivity change rate and the rainfall quantity is also analyzed.
PapersOn prospecting of jacking pipe by electromagnetic methodIn refereedAcademic JournalCo-authorJournal of The Society of Exploration Geophysists of Japan1993/6~It becomes very freqent to employ the jacking method for construction of lifeline. Especially, in the case of small diameterpipe, it is very important problem to locate the top of Jacking pipe under operation. The erectromagnetic method deems to be the most suitable method for such purpose.
To improve the ability of prospecting, it is desirable to use the primary magnetic field basically than the secondary field. In the present paper, we introduce the acalytical solutions of the magnetic field induced by the circular oscillationcoil and describe theoretical and ezperimental results regarding the ability of an electromagnetic method to loate the top jacking pipe with the results of calculation.Key words: electromagnetic method, magnetic field, small jacking pipe
PapersCharacterization of elastic wave velocity on various rock specimens under uniaxial and repeated stress conditionsUnrefereedIn-house publicationCo-authorH.Kusumi;Y.Miyazima;H.Inoue;K.TaniguchiEngineering and Technology1993/3~
PapersApplication of Continuous Failure State Direct Shear Test on Discontinuous Rocks.In refereedAcademic JournalCo-authorTANIGUCHI/Keiichiro;KUSUMI/Harushige;TERAOKA/Katsumi;OOHASHI/TakaoJournal of The Mining and Materials Processing Institute of Japan1992/8~In the determination of the shear strength of rocks, a lot of similar specimens are needed to obtain satisfactory results, but the preparation of the specimens of same characters invoices great difficulties, especially in the case of discontinuous rocks, It is desirable if the strength envelopes could be obtained from only one specimen.
In this study, we carried out two types of CFS tests, and a series of constant stress shear tests for plaster specimens with regular triangular joint. In addition to these tests, we carried out multi-stage shear tests for rock specimens with artificially generated irregular joint. We made comparison of the results obtained by these tests, and examined the applicability of CFS tests.KEYWORDS: Continuous Failure State Test, Discontinuous Rock, Failure Line, Shear Strength
PapersDilation Properties of Regular Discontinuous during Shear.In refereedAcademic JournalCo-authorKUSUMI/Harushige;TERAOKA/Katsumi;TANIGUCHI/KeiichiroJournal of Japan Society of Civil Engineers1991/6~This paper deals with the influence of joint roughness on the dilation behavior and the shear strength properties. Direct shear tests on seven types of plaster-sand specimens which have the rough discontinuities of regular triangle shapes have been conducted, and the comparison those results with Ladanyi and Archambault's criteria and Patton's criteria was carried out.
The results obtained are summarized as follows :(1) The dilation behavior is remarkably affected by the angle of the teeth.
(2) The shear strength of regular triangular joints gradually approaches the shear strength of flat joints rather than intact specimens.
PapersApplication of several electlic resistivity of intact rocks to field rock massesCo-authorMakoto Nakamura;Usao Nishikata;Harushige Kusumi;Yoiti Hatakenaka211-2151991/1~Japan Society of Civil EngineersBefore the underground structures such as tunnels and large caverns will be constructed, seismic prospecting and electrical prospecting for geological surveys are often executed. However, it is few that the velocity of elastic wave and the electric resistivity obtained from these prospecting methods are directly used to the design.
In this paper, the relations among electric resistivity, porosity and degree of saturation of various rock specimens were investigated by laboratory tests were compared with the field measurement data obtained by electric prospecting. As a result, it is clarified that the characterization of electric resistivity of some rock cores can be applied on the estimation of in-situ rock mass.
PapersLongitudinal Wave Velocity of Anisotropic Rocks under Biaxial Stress Loading.In refereedAcademic JournalCo-authorK.Taniguchi;H.Kusumi;Y.Matsui;K.TeraokaJournal of The Society of Exploration Geophysists of Japan1989/8~P-wave velocity of anisotropic rock specimens in the axial direction was measured under biaxial stress loading. The rock specimens are cut out from the block of Yoshino chlorite schist into the column with the angle between the plane of schistosity and the horizontal plane perpendicular to the axis of the core about 0(S0), 20(S20), 45(S45), 70(S70) and 90(S90). The relationship between P-wave velocity and directions of schistosity has been investigated under various confining pressure.
The results obtained are as follows.1) It is recognized that P-wave velocity of rock specimen in the direction parallel to the axis of maximum principal stress is affected by the angle between the plane of schistosity and the horizontal plane.
2) The relation between P-wave velocity and the deviator stress is expressed in terms of a hyperbolic function.3) Two constant values defined in a hyperbolic function relate with the initial elastic modulus, confining pressure and P-wave velocity of the rock specimens under the atmospheric pressure.
PapersA Development of Settlement Measuring System using Magnetic Sensor and its Application.In refereedAcademic JournalCo-authorTANIGUCHI/Keiichiro;KUSUMI/Harushige;KIMURA/Koichi;TSUJIMOTO/KatsuhikoJournal of Japan Society of Civil Engineers1989/8~The new method of measuring settlement using one bore hole which has enable the increase of measuring points during observation were developed. The principle of this method is based on two unique points, one of which is application of a permanent magnet as an indicator of settlement, and the other is the explotation of semi-conductor magnero resistance elements for detecting the magnetic fields. In advance of the observation, the magnets are forced into the earth penetrating the VINYL CHLORIDE casing of bore hole by the oil jack at suitable depths and intervals, and the small sized magneto-resistanve element is much use of realization of this idea.
In this paper, the principles of this method, measuring procedure, the special characteristics and potential of this system and the results of field trials are desctibed.Keywords: measuring settlement system, magneto-resistance elements, permanent magnet
PapersOn Measuring Settlement by Magnetic Method at any DepthIn refereedAcademic JournalCo-authorK.Taniguchi;H.Kusumi;T.Sakamoto;K.KimuraMarine GeotechnologyVol.8,No.1,pp.81-981989/1~When artificial islands are constructed, they are subject to surface subsidence, which is the resultant sum of the consolidation strata, many of which seem differ in character. When these strata are soft and thick, or heavily loaded, it becomes very difficult to estimate how much settlement will eventually take place, and over how long a period. For the estimate to be accurate, the settlement characteristics of each layer must first be determined.
For this purpose, the authors have investigated a new method of measuring settlement, based on two unique principles. One principle is the application of a permanent magnet as an indicator of settlement, and the other is the exploitation of semiconductor, magneto-resistance elements for detecting the magnetic fields. In advance of the observation, the magnets are forced into the earth, being pushed out thorough the bore-hole casing by the oil jack at suitable depths and intervals. The small-sized magneto-resistance element is essential to the practicality and efficiency of this method.In this study, the principles of this method, measuring procedure, the special characteristics and potential of this system, and the results of field trials are described.
Keywords Settlement, magnetic Method, Rokko Island.
PapersRelation between Deformation Characteristics and P-Wave Velocities of Rock Specimens under Biaxial Stress Loading.In refereedAcademic JournalCo-authorJournal of The Society of Exploration Geophysists of Japan1987/2~It is known that the propagation velocities of elastic waves through rocks under compressive stress conditions increase as compared with stress free conditions. Some papers has been reported on the characteristics of velocity variation under axial-stress conditions or under static-water pressure. It seems that some essential different tendencies of P-wave variations between the above stress conditions and the biaxial-stress conditions.
We remodeled the pressure cell of triaxial-compression testing machine capable of measuring characters of velocity by means of super-sonic wave, and carried out a series of experiments to examine the characters of velocity change under biaxial-stress conditions. The rock specimens tested are of sandstone, granite, graphite-schist and marble as are typical ones of structures and origins of rocks.The mode of velocity change under the biaxial stresses coincides with that of strain, therefore the relation between velocity and dilation shows the linearer figure than the curve of velocity vs. stress. The increase of velocities ranges from a few percent to 50 percent. The initial velocity under free stress and the gradient of increasing velocity are considered to be related with the rock structure and the composition.
PapersTheoretical Study on Compaction of Sand Deposits by Blasting.In refereedAcademic JournalCo-authorKUSUMI/Harushige;TANIGUCHI/KeiichiroSoils and Foundation1985/9~
PapersOn Quickning Subsidence of Soil Bank by Blasting.In refereedAcademic JournalCo-authorTANIGUCHI/Keiichito;KUSUMI/HarushigeExplosion and Explosives1985/1~When the artificial vibration is added to the soil layer, the skeleton of the soil structure is destroyed and rearranged for the state of higher density. This is the principle of the dynamic compaction methods which have been used for the improvement of foundation.
The authors propose that the blasting in the soil layer as the source of energy may be more effective than the mechanical vibration from the surface. In this paper, the mechanism of soil blasting and the strength of soil are described and the results of two field experiments are discussed comparing with the theoretical considerations.As the results, it is recognized that the instant subsidence caused by the soil blasting corresponds to the several years amount of the natural subsidence.
PapersLaboratory Test on Compaction of Sand Deposits by Blasting.In refereedAcademic JournalCo-authorKUSUMI/Harushige;TANIGUCHI/KeiichiroSoils and Foundation1984/6~
Research Activities Overseas
- Kansai University's Overseas Research Program(long term)Sep. 1990-Aug. 0,United Kingdom Imperial College Science and Technology
- Kansai University's Overseas Research Program(long term)Jun. 2017-Jul. 0,
Participation in International Conferences
- The 6th International Conference on Trenchless Construction Oct.1990
- ISRM International Symposium on Safety and Environmental Issues in Rock Engineering Jun.1993
- ISRM International Symposium on Prediction and Performance in Rock Mechanics and Rock Engineering Sep.1996
- ISRM International Symposium NY Rocks97'and 36thd U.S. Rock Mechanics Symposium Jun.1997
- ISRM International Symposium on Environmental and Safety Concerns in Underground Construction Oct.1997
- The 3rd international congress on Mechanics of Jointed and Faulted Rock Apr.1998
- The 2nd International Symposium on Hard Soils and Soft Rocks Oct.1998
- The Eurock 2000 Symposium Mar.2000
- The 8th International Symposium on Landslides Jun.2000
- SEG 17th Annual meeting Aug.2000
- International Conference On Geotechnical&Geological Engineering (GeoEng2000) Nov.2000
- The ISRM Regional Symposium Eurock 2001 Jun.2001
- ISRM International Symposium 2nd Asian Rock Mechanics Symposium Sep.2001
- International Symposium on Modern Tunneling Science and Technology Vol.1 IS-Kyoto Oct.2001
- The 6th International Symposium on Recent Advance in Exploration Geophysics in Kyoto Jan.2002
- ISRM Regional Symposium, Problems and Approaches in Underground Construction Vol.1,3rdKorea-Japan Joint Symposium on Rock Engineering Jul.2002
- The 71th SEG Annual meeting Oct.2002
- ISRM international symposium on rock engineering for mountains regions Nov.2002
- NCST –Kyoto university joint workshop on rock mechanics and rock engineering in Hanoi Nov.2002
- The 7th International symposium on recent advances in exploration geophysics in Kyoto Jan.2003
- The first international symposium on underground environment Mar.2003
- The 2nd Southeast Asia workshop on Rock Engineering Nov.2003
- EIT–JAPAN–AIT Workshop Sep.2004
- The 6th International Workshop on the ”Application of Geophysics to Rock Engineering” Nov.2004
- ISRM International Symposium 3rd ARMS Nov.2004
- EIT-JAPAN-AIT2005 Seminar on Geo-Risk Engineering and Management Sep.2005
- The 10th International Symposium on Recent Advances in Exploration Geophysics Feb.2006
- Japan-AIT joint international symposium Mar.2006
- ISRM International Symposium 2006 4th Asian Rock Mechanics Symposium, Rock Mechanics in Underground Construction Nov.2006
- The 8th SEGJ International Symposium -Imaging and Interpretation-,SEGJ Nov.2006
- EIT-JSCE Joint Seminar on Rock Engineering 2007, EIT-JSCE Sep.2007
- EIT-JSCE Joint International Symposium, EIT-JSCE Sep.2008
- International Rock Mechanics Symposium on The 2nd Thai Rock 2009,Keynote Lecturer Mar.2009
- Prediction and simulation methods for geohazard mitigation,in Kyoto,Japan,IS-Kyoto 2009 May25,2009-May 27,2009
- Collaboration between Asian countries in Life science, Information Technology and Civil Engineering Aug.2009
- EIT-JSCE Joint International Symposium 2009 Sep.5,2009-Sep. 8,2009
- The 9th International Symposium on Recent Advances in Exploration Geophysics in Beijing May2005
- Impact of Human Activity on the Geological Environment Eurock 2005 May2005
- International symposium on underground excavation and tunnelling Feb.2006
- The 11th International Symposium on Recent Advances in Exploration Geophysics in Kyoto Apr.2007
- The 11th Congress of The International Society for Rock Mechanics in Lisbon Jul.2007
- College of Engineering, Cheng Shiu University Gradute School of Science and Engineering, Kansai University Aug.23,2010-Aug. 25,2010
- EIT-JSCE Symposium on Engineering for Geo-Hazards:Earthquakes and Landslides-for Surface and Subsurface Structures Sep.6,2010-Sep. 8,2010
Courses Taught
- Geotechnical Design
- Thesis Projects I
- Seminar for Urban Engineers
- Overview of Industrial Technology
- Introduction of Civil and Applied Systems Engineering
- Geomechanics
- Exercises in Geomechanics
- Thesis Projects II
- SeminarI(Civil, Environmental
- SeminarII(Civil, Environmental
- SeminarIII(Civil, Environmental
- SeminarIV(Civil, Environmental
- Advanced Rock Engineering
- Exercises in Geomechanics
- Thesis Projects III
- Advanced Rock Engineering
- Personal Information
- Research Activities
- Research Activities
- Community Service
- Courses Taught