Hideaki Yasuhara

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Name
Hideaki Yasuhara
E-mail
hidecee.ehime-u.ac.jp
Affiliation
Ehime University
Research funding number
70432797

Research Areas

 
 

Education

 
Aug 2001
 - 
Oct 2005
Dpt. Energy and Geo-Environmental Engineering, The Pennsylvania State University
 

Awards & Honors

 
Dec 2009
Best Paper Award, International Symposium on Ground Improvement Technologies and Case Histories
 
Jul 2007
Manuel Rocha Medal 2007
 
Jun 2006
2006 N.G.W. Cook Award for Ph.D. Thesis in Rock Mechanics
 

Published Papers

 
Small-strain shear modulus and liquefaction resistance of sand with carbonate precipitation
Minson Simatupang, Mitsu Okamura, Kazuyuki Hayashi, Hideaki Yasuhara
Soil Dynamics and Earthquake Engineering   115 710-718   Sep 2018   [Refereed]
Improving Shear Strength Parameters of Sandy Soil using Enzyme-Mediated Calcite Precipitation Technique
Putra, H., Yasuhara, H., Kinoshita, N., Erizal and Sudibyo
Journal of Civil Engineering Science and Application,   20(2) 91-95   Sep 2018   [Refereed]
Modeling of coupled thermal-hydraulic-mechanical-chemical processes for predicting the evolution in permeability and reactive transport behavior within single rock fractures
Sho Ogata, Hideaki Yasuhara, Naoki Kinoshita, Dae-Sung Cheon, Kiyoshi Kishida
International Journal of Rock Mechanics and Mining Sciences   107 271-281   Apr 2018   [Refereed]
Sho OGATA,Hideaki YASUHARA,Kiyoshi KISHIDA
Journal of the Society of Materials Science   67(3) 310-317   Mar 2018   [Refereed]
Optimum Condition for the Application of Enzyme-Mediated Calcite Precipitation Technique as Soil Improvement Method
Heriansyah Putra, Hideaki Yasuhara, and Naoki Kinoshita
International Journal on Advanced Science, Engineering Information Technology   7(6) 2145-2151   Dec 2017   [Refereed]
Applicability of Natural Zeolite for NH-Forms Removal in Enzyme-Mediated Calcite Precipitation Technique
Heriansyah Putra, Hideaki Yasuhara, and Naoki Kinoshita
Geosciences   7(61) doi:10.3390/geosciences7030061   Jun 2017   [Refereed]
Mamoru Kikumoto, Vu Pham Quang Nguyen, Hideaki Yasuhara, Kiyoshi Kishida
Computers and Geotechnics   91 93-103   Jul 2017   [Refereed]
Heriansyah Putra, Hideaki Yasuhara, Naoki Kinoshita and Akira Hirata
Geomechanics and Engineering   12(5) 803-813   May 2017   [Refereed]
木下尚樹,氏家勲,河合慶有,川口隆,安原英明,長江俊勝
Journal of MMIJ   133(6) 132-139   Jun 2017   [Refereed]
Optimization of Enzyme-Mediated Calcite Precipitation as a Soil-Improvement Technique: The Effect of Aragonite and Gypsum on the Mechanical Properties of Treated Sand, Crystals
Heriansyah Putra, Hideaki Yasuhara, Naoki Kinoshita and Akira Hirata
Crystals   7(59) doi:10.3390/cryst7020059   Feb 2017   [Refereed]
A synthesis of approaches for modelling coupled thermal–hydraulic–mechanical–chemical processes in a single novaculite fracture experiment
Alexander E. Bond・Ivan Brusky・Tianqing Cao・Neil Chittenden・Randall Fedors・Xia-Ting Feng・Jin-Ping Gwo・Olaf Kolditz・Philipp Lang・Christopher McDermott・Ivars Neretnieks・Peng-Zhi Pan・Jan Sembera・Hua Shao・Nori Watanabe・Hide Yasuhara・Hong Zheng
Environmental Earth Sciences   76(12) DOI10.1007/s12665-016-6326-6   2017   [Refereed]
Hideaki Yasuhara, Naoki Kinoshita, Dae Sung Lee, Junhyung Choi, Kiyoshi Kishida
International Journal of Greenhouse Gas Control   56 155-164   2017   [Refereed]
Alexander E. Bond・Ivan Brusky・Neil Chittenden・Xia-Ting Feng・Olaf Kolditz・Philipp Lang・Renchao Lu・ Christopher McDermott・Ivars Neretnieks・Peng-Zhi Pan・Jan Šembera・Hua Shao・Hide Yasuhara・Hong Zheng
Environmental Earth Sciences   75(19)    2016   [Refereed]
Effect of Magnesium as Substitute Material in Enzyme-Mediated Calcite Precipitation for Soil-Improvement Technique
Heriansyah Putra, Hideaki Yasuhara, Naoki Kinoshita, Debendra Neupane and Chih-Wei Lu
Frontiers in Bioengineering and Biotechnology   4(37) doi: 10.3389   2016   [Refereed]
Hideaki Yasuhara, Naoki Kinoshita, Sho Ogata, Dae-Sung Cheon, and Kiyoshi Kishida
International Journal of Rock Mechanics and Mining Sciences   86 104-114   2016   [Refereed]
Experimental study on shear strength recovery of single rock joint under thermal conditions
Kiyoshi KISHIDA, Naoya TSUDA, Takao YANO, Hideaki YASUHARA
Japanese Geotechnical Journal   11(1) 11-20   2016   [Refereed]
Debendra Neupane, Hideaki Yasuhara, Naoki Kinoshita, Heriansyah Putra
Soils and Foundations   55(6) 1512-1518   Dec 2015   [Refereed]
© 2015 The Japanese Geotechnical Society. Production and hosting by Elsevier B.V. All rights reserved. This study evaluates the potential of improving an insitu calcite grouting technique. The grout is composed of an equimolar solution of urea-CaC...
YASUHARA HIDEAKI, KASHIWAGI RYOTA, KINOSHITA NAOKI, LEE DAE SUNG, KISHIDA KIYOSHI
J MMIJ   131(8/9) 497-502   Aug 2015   [Refereed]
Hideaki Yasuhara, Naoki Kinoshita, Hiroaki Ohfuji, Manabu Takahashi, Kazumasa Ito, Kiyoshi Kishida
Water Resources Research   51(7) 5425-5449   Jul 2015   [Refereed]
© 2015. American Geophysical Union. All Rights Reserved. In this study, a series of long-term, intermittent permeability experiments utilizing Berea sandstone and Horonobe mudstone samples, with and without a single artificial fracture, is conduct...
Debendra Neupane, Hideaki Yasuhara, Naoki Kinoshita, Yuji Ando
Soils and Foundations   55(2) 447-457   Jan 2015   [Refereed]
© 2015 Japanese Geotechnical Society. Production and hosting by Elsevier B.V. All rights reserved. This study discusses the possible application of enzyme mediated calcite precipitation, EMCP, as a soil-improvement technique. It explains the exper...
YASUHARA HIDEAKI, OGATA SHO, KINOSHITA NAOKI, KISHIDA KIYOSHI
土木学会論文集 C(地圏工学)(Web)   71(4) 292-300   2015   [Refereed]
 As considering the safe isolation of high level radioactive wastes, the long-term evolution of the hydraulic properties of rocks should be examined because a thermo-hydro-mechano-chemical processes are active under such conditions. In this study,...
YASUHARA HIDEAKI, NEUPANE DEBENDRA, KINOSHITA NAOKI, HAYASHI KAZUYUKI, UNNO TOSHIYASU
土木学会論文集 C(地圏工学)(Web)   70(2) 290-300   2014   [Refereed]
 In this work, the soil-ground solidification by calcium carbonate precipitation has been examined utilizing a urea hydrolysis enhanced by urease. Firstly, a suite of the small cylinder tests (50 mm in diameter and 100 mm in height) was conducted ...
Debendra Neupane, Hideaki Yasuhara, Naoki Kinoshita, Toshiyasu Unno
Journal of Geotechnical and Geoenvironmental Engineering   139(12) 2201-2211   Nov 2013   [Refereed]
A grouting technique for enzymatic calcite precipitation is evaluated. Urea and calcium salt, at various concentrations, are mixed with a concentration-fixed enzyme to obtain the optimal precipitation of CaCO3. The optimally combined solution is i...
KINOSHITA NAOKI, YASUHARA HIDEAKI, HASHIMOTO KATSUKI
J MMIJ   129(7) 485-491   Jul 2013   [Refereed]
In radioactive waste disposal, tunnel passing through the ground with high geothermal region, and hot water temporary storage system, the rock mass around the openings will be influenced by coupled chemo-mechanical behavior induced by high tempera...
Dae Sung Lee, Hideaki Yasuhara
Geosystem Engineering   16(1) 113-118   Mar 2013   [Refereed]
The rates and magnitudes of fracture permeability on commercially available proppants were determined from flow through experiments at different stresses and temperatures for hydraulically open and closed systems. A pressure solution model describ...
Kiyoshi Kishida, Atsushi Sawada, Hideaki Yasuhara, Takashi Hosoda
Soils and Foundations   53(1) 105-116   Feb 2013   [Refereed]
Considering the safe, long-term isolation of energy byproducts, such as radioactive waste, one of the important parameters is the velocity of the groundwater flow through the void of rock masses and/or fractures. Although it is generally known tha...
YASUHARA HIDEAKI, HASEGAWA DAIKI, NAKASHIMA SHIN'ICHIRO, YANO TAKAO, KISHIDA KIYOSHI
地盤工学ジャーナル(Web)   8(1) 71-79   2013   [Refereed]
It is of great importance to understand temporal and spatial changes in the hydraulic and transport properties of rock mass mediated by the mineral dissolution controlled by temperature and stress conditions. In this work, a suite of flow-through ...
KINOSHITA NAOKI, KAWAGUCHI TAKASHI, MATSUO TAKASHI, HONDA MIKI, YASUHARA HIDEAKI
J MMIJ   128(12) 611-619   Nov 2012   [Refereed]
The paper sludge which is generated during paper manufacturing processes is incinerated to reduce its volume, and then the paper sludge ash is produced. The greater part of the paper sludge ash has been disposed to landfills and an effective utili...
KINOSHITA NAOKI, KAWAGUCHI TAKASHI, MATSUO TAKASHI, YASUHARA HIDEAKI
J MMIJ   128(10/11) 576-583   Sep 2012   [Refereed]
There are many paper mills in the eastern area of Ehime Prefecture where the pulp and paper industry has been well developed. Paper sludge containing large amounts of water is generated during paper manufacturing processes. The paper sludge is inc...
Hideaki Yasuhara, Debendra Neupane, Kazuyuki Hayashi, Mitsu Okamura
Soils and Foundations   52(3) 539-549   Jun 2012   [Refereed]
A grouting technique that utilizes precipitated calcium carbonate as a cementing material is presented. The enzyme urease is used to enhance the rate and the magnitude of the calcium carbonate precipitation. Evolutions in the mechanical and the hy...
KINOSHITA NAOKI, YASUHARA HIDEAKI
J MMIJ   128(2) 72-78   Jan 2012   [Refereed]
From the viewpoints of multiple-utilization of land, environmental safeguards, energy conservation, etc, a temporary storage of hot water in openings excavated in rock may be worthwhile. In this case, the rock mass around the openings will respond...
YASUHARA HIDEAKI, HASHIMOTO KATSUKI, KINOSHITA NAOKI
J MMIJ   128(2) 79-85   Jan 2012   [Refereed]
When considering a geological isolation of high level radioactive wastes, the evolutions of the mechanical, hydraulic, and transport properties of the targeted rocks should be evaluated in advance because those may be degraded by the coupled therm...
Hide Yasuhara, Naoki Kinoshita, Hiroaki Ohfuji, Dae Sung Lee, Shinichiro Nakashima, Kiyoshi Kishida
Applied Geochemistry   26(12) 2074-2088   Dec 2011   [Refereed]
Examining the evolution of fracture permeability under stressed and temperature-elevated conditions, a series of flow-through experiments on a single rock fracture in granite has been conducted under confining pressures of 5 and 10. MPa, under dif...
Mitsu Okamura, Masaya Takebayashi, Katsuji Nishida, Nao Fujii, Motoharu Jinguji, Takehiko Imasato, Hideaki Yasuhara, Emiko Nakagawa
Journal of Geotechnical and Geoenvironmental Engineering   137(7) 643-652   Jul 2011   [Refereed]
Desaturation of ground by air injection attracts considerable attention in recent years as an innovative technique for a liquefaction countermeasure. Several research programs were conducted in laboratories regarding the related topics. This paper...
Kiyoshi Kishida, Yuta Kawaguchi, Shinichiro Nakashima, Hideaki Yasuhara
International Journal of Rock Mechanics and Mining Sciences   48(5) 782-793   Jul 2011   [Refereed]
The evolution of the long-term mechanical, hydraulic, and transport characteristics of rock fractures should be predicted in advance by considering the issue of the underground deposits of the energy byproducts of high-level radioactive waste. Thi...
Naoki Kinoshita, Hide Yasuhara
International Journal of Geomechanics   11(2) 124-130   Apr 2011   [Refereed]
The temporary storage of hot water in openings excavated in rock may be worthwhile for multiple land-use applications, environmental safeguards, and energy conservation. When used for hot water storage, the rock mass around the openings will respo...
KAWAGUCHI YUTA, NAKASHIMA SHIN'ICHIRO, YASUHARA HIDEAKI, KISHIDA KIYOSHI
J MMIJ   127(3) 158-164   Feb 2011
Evolution of the long-term mechanical, hydraulic, and transport characteristics of rock fractures should be, in advance, predicted in considering an issue on entombment of energy byproducts of high level radioactive wastes. Under stressed and temp...
Dae Sung Lee, Derek Elsworth, Hideaki Yasuhara, Jim D. Weaver, Richard Rickman
Journal of Petroleum Science and Engineering   74 67-76   Oct 2010
Observed reductions in the permeability of propped hydraulic fractures are examined by considering the role of mechanical stresses and the chemistry of pore fluids at elevated temperatures as agents of proppant diagenesis. Stress-enhanced dissolut...
Derek Elsworth, Hideaki Yasuhara
International Journal for Numerical and Analytical Methods in Geomechanics   34 533-549   Apr 2010
Transient changes in the permeability of fractures in systems driven far-from-equilibrium are described in terms of proxy roles of stress, temperature and chemistry. The combined effects of stress and temperature are accommodated in the response o...
NAKASHIMA Shinichiro, KAWAGUCHI Yuta, KISHIDA Kiyoshi, YASUHARA Hideaki, YANO Takao, HOSODA Takashi
journal of the Japan Society for Testing Materials   59(3) 211-218   Mar 2010
This paper presents direct shear test results for single jointed granite and mortar specimens to investigate effects of long-term load holding on mechanical and hydrological properties of rock joints. From the test results, it was confirmed that s...
HAYASHI KAZUYUKI, TADANOBU SAYAKA, YASUHARA HIDEAKI, OKAMURA MITSU
土木学会論文集 C(Web)   66(1) 31-42 (J-STAGE)-42   2010
  A series of drained triaxial tests was performed to clarify the effects of calcium carbonate precipitation on mechanical properties of sand. SEM-EDX was also utilized to examine the quality and quantity of the precipitated, revealing that calciu...
HAYASHI KAZUYUKI, OKAMURA MITSU, YASUHARA HIDEAKI
地盤工学ジャーナル(Web)   5(2) 391-400 (J-STAGE)-400   2010
A suite of undrained cyclic triaxial tests was performed to clarify the effects of calcium carbonate precipitation on liquefaction resistance of sand. For the tests Toyoura sand was utilized with relative density of ca.50%. Two kinds of soil sampl...
OKAMURA MITSU, TAKEBAYASHI MASAYA, NISHIDA KATSUJI, FUJII NAO, JINGUJI MOTOHARU, IMASATO TAKEHIKO, YASUHARA HIDEAKI, NAKAGAWA EMIKO
土木学会論文集 C(Web)   65(3) 756-766 (J-STAGE)-766   2009
  Desaturation of ground by air injection attracts considerable attention in resent years as an innovative technique for liquefaction countermeasure. This technical report describes an in-situ air injection test which aims to confirm an effectiven...
YASUHARA HIDEAKI, KINOSHITA NAOKI, RI DASAN, NAKAJIMA SHIN'ICHIRO, KISHIDA KIYOSHI
土木学会論文集 C(Web)   65(1) 41-52 (J-STAGE)-52   2009
A conceptual model, accounting for pressure and free-face dissolutions, is presented to follow the evolution of fracture permeability in granite that was observed in a flow-through experiment. This model addresses the two dissolution processes at ...
Hideaki Yasuhara, Mitsu Okamura, Yoshinori Kochi
Soils and Foundations   48 791-804   Dec 2008
Measures preventing an earthquake-induced soil liquefaction are of significant importance to mitigate the liquefaction hazards. An air-injection technique may be a simple, inexpensive method - this leads the saturated soils to the desaturated by i...
Hideaki Yasuhara, Derek Elsworth
Pure and Applied Geophysics   165(7) 1289-1306   Aug 2008   [Refereed]
Unusually rapid closure of stressed fractures, observed in the initial stages of loading and at low temperatures, is examined using models for subcritical crack growth and pressure solution. The model for stress corrosion examines tensile stress c...
Christine F. Conrad, Gary A. Icopini, Hideaki Yasuhara, Joel Z. Bandstra, Susan L. Brantley, Susan L. Brantley, Peter J. Heaney, Peter J. Heaney
Geochimica et Cosmochimica Acta   71(3) 531-542   Feb 2007   [Refereed]
The kinetics of the formation and precipitation of nanocolloidal silica from geologically relevant aqueous solutions is investigated. Changes in monomeric (SiO2(mono)), nanocolloidal (SiO2(nano)) and precipitated silica (SiO2(ppt)) concentrations ...
YASUHARA HIDEAKI, KINOSHITA NAOKI, KURIKAMI HIROSHI, NAKAJIMA SHIN'ICHIRO, KISHIDA KIYOSHI
土木学会論文集 C   63(4) 1091-1100 (J-STAGE)-1100   2007
A conceptual model is presented to follow the evolution of permeability in siliceous rocks mediated by pressure solution. Specifically, the main minerals of siliceous rocks that are quartz, cristobalite, and amorphous silica, are focused to examin...
Hide Yasuhara, Derek Elsworth, Amir Polak, Jishan Liu, Avrami Grader, Phillip Halleck
Transport in Porous Media   65 385-409   Dec 2006
Principal mechanical and chemical processes contributing to the observed spontaneous switching from net decrease in permeability to net increase in a fracture in carbonate are examined. The evolution of permeability, and related fracture aperture,...
Derek Elsworth, Hideaki Yasuhara, Hideaki Yasuhara
Pure and Applied Geophysics   163(10) 2051-2070   Oct 2006   [Refereed]
Anomalous changes in permeability are reported in fractures circulated by fluids undersaturated with respect to the mineral host. Under net dissolution and net removal of mineral mass, fractures may alternately gape or seal, depending on the preva...
Hideaki Yasuhara, Derek Elsworth
International Journal for Numerical and Analytical Methods in Geomechanics   30(10) 1039-1062   Aug 2006   [Refereed]
A numerical model is presented to describe the evolution of fracture aperture (and related permeability) mediated by the competing chemical processes of pressure solution and free-face dissolution/precipitation; pressure (dis)solution and precipit...
Hideaki Yasuhara, Amir Polak, Yasuhiro Mitani, Abraham S. Grader, Phillip M. Halleck, Derek Elsworth
Earth and Planetary Science Letters   244 186-200   Apr 2006
We report flow-through experiments on a natural fracture in novaculite under moderate effective stresses (∼1.4 MPa) and temperatures (20-120 °C) to examine the effect on flow and transport characteristics. The efflux of fluid and dissolved mineral...
Jishan Liu, Jinchang Sheng, A. Polak, D. Elsworth, H. Yasuhara, A. Grader
International Journal of Rock Mechanics and Mining Sciences   43 23-36   Jan 2006
A fully coupled hydrological-mechanical-chemical (HMC) model is developed and applied to explain enigmatic spontaneous changes in permeability that develop within a fracture in limestone under simulated in situ conditions (Water Resour Res 2004;40...
Hideaki Yasuhara, Amir Polak, Yasuhiro Mitani, Avrami Grader, Phillip Halleck, Derek Elsworth
Transactions - Geothermal Resources Council   29 437-441   Dec 2005
Flow-through experiments are conducted on a natural fracture in novaculite at a constant effective stress of 1.38 MPa and at staged temperatures of 20, 40, 80, and 120°C. Fluid and mineral effluxes are measured throughout the 3150-hr experiment, t...
Thermo-Hydro-Mechano-Chemical Couplings that Define the Evolution of Permeability in Rock Fractures
Hideaki Yasuhara
the Pennsylvania State University      Aug 2005   [Refereed]
Hideaki Yasuhara, Chris Marone, Derek Elsworth
Journal of Geophysical Research B: Solid Earth   110 1-11   Jun 2005
Laboratory and field observations note the significant role of strength recovery (healing) on faults during interseismic periods and implicate pressure solution as a plausible mechanism. Plausible rates for pressure solution to activate, and the m...
Hideaki Yasuhara, Derek Elsworth, Amir Polak
Journal of Geophysical Research B: Solid Earth   109    Mar 2004
A mechanistic model is presented to describe closure of a fracture mediated by pressure solution; closure controls permeability reduction and incorporates the serial processes of dissolution at contacting asperities, interfacial diffusion, and pre...
Hideaki Yasuhara, Derek Elsworth, Amir Polak
Journal of Geophysical Research: Solid Earth   108    Nov 2003
A model is presented for the compaction of granular aggregates that accommodates the serial processes of grain-contact dissolution, grain-boundary diffusion, and precipitation at the pore wall. The progress of compaction and the evolution of the m...
A. Polak, D. Elsworth, H. Yasuhara, A. S. Grader, P. M. Halleck
Geophysical Research Letters   30    Oct 2003
Flow-through tests are completed on a natural fracture in novaculite at temperatures of 20°C, 80°C, 120°C, and 150°C. Measurements of fluid and dissolved mass fluxes, and concurrent X-ray CT imaging, are used to constrain the progress of mineral d...

Conference Activities & Talks

 
Multi-physics modeling by incorporating damage theory for evaluating rock permeability change
Sho Ogata, Hideaki Yasuhara and Kiyoshi Kishida
The Thirty-first KKHTCNN Symposium on Civil Engineering   22 Nov 2018   
Evaluation on the healing of single rock fracture with consideration of the critical state during slide-hold-slide process
Kosuke Matsumoto, Hideaki Yasuhara, Takao Yano and Kiyoshi Kishida
The Thirty-first KKHTCNN Symposium on Civil Engineering   22 Nov 2018   
Permeability variation of granite single fracture in considering influence of temperature and stress confining period
Chenlu Song, Shinichiro Nakashima, Hideaki Yasuhara and Kiyoshi Kishida
The Thirty-first KKHTCNN Symposium on Civil Engineering   22 Nov 2018   
Coupled THMC modelling by considering damage theory and pressure dissolution for predicting permeability change in fractured rocks
H.Yasuhara, S.Ogata, N.Kinoshita, K.Kishida
International Conference on Coupled Processes in Fractured Geological Media: Observation, Modeling, and Application   12 Nov 2018   
Thermal-hydraulic-mechanical-chemical Couplings that Define the Evolution of Flow and Transport Behavior in Fractured Rocks
Hideaki Yasuhara
10th Asian Rock Mechanics Symposium (2018 ARMS10), Singapore,   29 Oct 2018   
Estimation on Permeability of Granite Single Fracture with Cyclic Loading and Unloading Processes Under Various Thermal Conditions
Chenlu Song, Takao Yano, Shinichiro Nakashima, Hideaki Yasuhara and Kishida Kiyoshi
10th Asian Rock Mechanics Symposium (2018 ARMS10), Singapore   29 Oct 2018   
Sustainability of Enzyme-Mediated Calcite Precipitation Method as an Environmental-Friendly Soil Improvement Technique
The 2018 World Congress on Advances in Civil and Environmental, Materials Research   28 Aug 2018   
Geochemically-regulated evolution of rock and sand properties under coupled conditions [Invited]
Hideaki Yasuhara
C-Best projec   17 Jul 2018   
Coupled THMC modelling of single fractures in novaculite and granite
Bond, A.E., Chittenden, N., Fedors, R., Lang, P., McDermott, C., Neretnieks, I., Pan, P.Z., Sembera, J., Brusky, I., Wanatabe, N., Lu, R., Yasuhara, H.
2nd International Discrete Fracture Network Engineering Conference   Jun 2018   
Coupled THMC modeling by considering damage theory for predicting permeability change in fractured rocks
Ogata, S., Yasuhara, H., Kinoshita, N., Kishida, K
52nd US Symp. on Rock Mechs./Geomechs   Jun 2018   
緒方奨, 安原英明, 岸田潔
岩盤力学に関するシンポジウム講演集(CD-ROM)   Jan 2018   
廣惠なつ美, 安原英明, 木下尚樹
岩盤力学に関するシンポジウム講演集(CD-ROM)   Jan 2018   
松本航佑, 矢野隆夫, 安原英明, 岸田潔
岩盤力学に関するシンポジウム講演集(CD-ROM)   Jan 2018   
SON Wonjun, 安原英明, 木下尚樹
岩盤力学に関するシンポジウム講演集(CD-ROM)   Jan 2018   
Coupled thermal-hydraulic-mechanical-chemical modeling for predicting the evolution of permeability on fractured rocks
Sho Ogata, Hideaki Yasuhara and Kiyoshi Kishida
The Thirtieth KKHTCNN Symposium on Civil Engineering   2 Nov 2017   
Structural Weakening and Recovery of Soft Rocks
Nguyen Pham Quang Vu, Mamoru Kikumoto, Hideaki Yasuhara and Kiyoshi Kishida
The Thirtieth KKHTCNN Symposium on Civil Engineering   2 Nov 2017   
Simulated mineral trapping of CO2 geo-sequestration: Evolution of physical properties [Invited]
Hideaki Yasuhara
The 4th International Symposium on Unconventional Geomechanics   16 Oct 2017   
Evaluation of cutoff time on slide-hold-slide process of single rock joint in consideration of the heating influence
Kishida., K., Matsumoto, K., Yano, ST., Nakashima, S., Yasuhara, H.
51st US Symp. on Rock Mechs./Geomechs, San Francisco, CA   Jun 2017   
Numerical modeling of coupled THMC processes for predicting fluid flow and transport behavior within fractured rocks
Ogata, S., Kinoshita, N., Yasuhara, H., Kishida, K.
51st US Symp. on Rock Mechs./Geomechs, San Francisco, CA   Jun 2017   
Observation and quantification of fracture aperture in granite core using X-ray tomography and edge detection technique
Nakashima, S., Sakamoto, T., Yasuhara, H., Kishida, K.
51st US Symp. on Rock Mechs./Geomechs, San Francisco, CA   Jun 2017   
Geochemically-regulated evolution of rock permeability and mechanical properties under stressed and heated conditions
Hideaki Yasuhara
China National Nuclear Corporation   28 Mar 2017   
Geochemically-regulated evolution of rock permeability and mechanical properties under stressed and heated conditions [Invited]
Hideaki Yasuhara
Chinese Academy of Sciences   27 Mar 2017   
Estimation on SHS process strength recovery through rock specimen included artificial cutting plane
Shinji SAKAI, Takao YANO, Hideaki YASUHARA, Masato OHNO and Kiyoshi KISHIDA
The Twenty-Ninth KKHTCNN Symposium on Civil Engineering   Dec 2016   
Enzyme-mediated carbonate precipitation (EMCP) for soil improvement: the effect of magnesium substitution
Hideaki Yasuhara, Heriansyah Putra and Naoki Kinoshita
Proc. The 2016 World Congress on Advances in Civil and Environmental, Materials Research (ASEM16)   Aug 2016   
Predictions of rock permeability by THMC model considering pressure solution
Yasuhara, H., Kinoshita, N. and Kishida, K.
Proc. 50th US Symp. on Rock Mechs./Geomechs, Houston, TX   Jun 2016   
Critical State Modeling of Sedimentary Rock Incorporating Healing and Decay of Rock Structure
Vu, P. Q. N., Kikumoto, M., Yasuhara, H. and Kishida, K.
Proc. 50th US Symp. on Rock Mechs./Geomechs, Houston, TX   Jun 2016   
Permeability Experiment in a Single Granite Fracture under Different Stress, Temperature, and pH Conditions
Hideaki Yasuhara, Naoki Kinoshita, Dae-Sung Cheon, and Kiyoshi Kishida
Proc. 2016 Korea-Japan Symposium on Rock Mechanics Engineering, Daejeon, Korea   May 2016   
Evaluation of long-term permeability change of rocks by THMC numerical simulation model
Sho Ogata, Hideaki Yasuhara, Naoki Kinoshita
第44回岩盤力学に関するシンポジウム講演集   Jan 2016   
EVALUATION OF PERMEABILITY CHANGE IN PROPPANTS AND PROPPANT TREATED ROCK FRACTURE
Takumi SUGANO, Hideaki YASUHARA, Naoki KINOSHITA and Dae-sung LEE
第44回岩盤力学に関するシンポジウム講演集   Jan 2016   
EVALUATION OF STRENGTH RECOVERY ON ARTIFICAL CUTTING PLANE THROUGH SHS TYPE TRIAXIAL COMPRESSION TESTS USING TUFF
Kishida, KIYOSHI, Shinji SAKAI, Takao YANO, Hideaki YASUHARA, Masato OHNO and Mamoru KIKUMOTO
第44回岩盤力学に関するシンポジウム講演集   Jan 2016   
Permeability of a single fracture in granite under the confining pressure and extraction of fracture structure using microfocus X-ray CT
Tomohiro ISHIKAWA, Hideki YASUHARA, Yosuke HIGO and Kiyoshi KISHIDA
Proc. The Twenty-Eight KKHTCNN Symposium on Civil Engineering   Nov 2015   
Coupled THMC model to predict long-term evolution of rock permeability
Hideaki YASUHARA and Kiyoshi KISHIDA
Proc. The Twenty-Eight KKHTCNN Symposium on Civil Engineering   Nov 2015   
Optimization of calcite precipitation as a soil improvement technique
Heriansyah Putra, Hideaki Yasuhara, Naoki Kinoshita and Debendra Neupane
Proc. the 2nd Makassar International Conference on Civil Engineering (MICCE 2015)   Aug 2015   
Constraining key factors that control evolution of rock permeability under high temperature, stress, and pH conditions [Invited]
Hideaki Yasuhara
Energy Technology Innovation Seminar in KIGAM   29 Jul 2015   
Measurements of fracture aperture in granite core using microfocus X-ray CT and fluid flow simulation
Kishida, K., Ishikawa, T. and Higo, Y., Sawada, A., Yasuhara, H.
Proc. 49th US Symp. on Rock Mechs./Geomechs   Jun 2015   
CHEMICALLY- AND MECHANICALLY-DRIVEN ALTERATION OF PERMEABILITY IN FRACTURED ROCKS UNDER DIFFERENT STRESS, TEMPERATURE, AND PH CONDITIONS
H. Yasuhara, N. Kinoshita, S. Nakashima, and K. Kishida
Proc. the 13th International Congress of Rock Mechanics, ISRM Congress 2015   May 2015   
D. Neupane, H. Yasuhara, N. Kinoshita
Computer Methods and Recent Advances in Geomechanics - Proceedings of the 14th Int. Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014   1 Jan 2015   
This paper discusses the experimental and numerical work on Enzyme Mediated Calcite Precipitation, EMCP, technique along with the improved mechanical properties of sand achieved by employing this technique. The homogenous sand specimen having a di...
Structural healing and decay of sedimentary soft rock under slide-hold-slide process and their constitutive description
Nguyen Pham Quang VU・Mamoru KIKUMOTO・Masato OHNO・Hideaki YASUHARA・Kiyoshi KISHIDA
第43回岩盤力学に関するシンポジウム講演集   2015   
Mechanical Behavior of Rock Joints with Various Kinds of Joint Surface Roughness under Cyclic Direct Shear Loading Conditions
Sumit MASKEY, Hideaki YASUHARA and Kiyoshi KISHIDA
第43回岩盤力学に関するシンポジウム講演集   2015   
津田 直弥, 矢野 隆夫, 安原 英明
岩盤力学に関するシンポジウム講演論文集   9 Jan 2014   
大野 正登, 矢野 隆夫, 安原 英明
岩盤力学に関するシンポジウム講演論文集   9 Jan 2014   
伊藤 文, 安原 英明, 木下 尚樹
岩盤力学に関するシンポジウム講演論文集   9 Jan 2014   
柏木 亮太, 安原 英明, 木下 尚樹
岩盤力学に関するシンポジウム講演論文集   9 Jan 2014   
木下 尚樹, 安原 英明, 崎山 久美子
岩盤力学に関するシンポジウム講演論文集   9 Jan 2014   
H. Yasuhara, N. Kinoshita, S. Nakashima, K. Kishida
48th US Rock Mechanics / Geomechanics Symposium 2014   1 Jan 2014   
Copyright (2014) ARMA, American Rock Mechanics Association In this study, evolution of mechanical and hydraulic properties in Berea sandstone with initial porosity of 20 % is examined quantitatively by replicating mineral trapping process within p...
Time Dependency Friction Factor of Rock Single Fracture under Slide-Hold-Slide Direct Shear Experiments
Kishida, K., Tsuda, N., Yano, T., and Yasuhara, H.
Proc. 48th US Symp. on Rock Mechs   2014   
Structural healing and decay of sedimentary soft rock in triaxial slide-hold-slide process and its modeling
Mamoru Kikumoto, Nguyen P. Q. Vu, Masato Ohno, Kiyoshi Kishida, Hideaki Yasuhara and Derek Elsworth
Proc. 8th Asian Rock Mechanics Symposium (2014 ARMS8)   2014   
Mechanical Behavior of Rock Joints with Various Kinds of Joint Surface Roughness under Cyclic Direct Shear Loading Conditions
S. Maskey, H. Yasuhara and K. Kishida
Proc. 8th Asian Rock Mechanics Symposium (2014 ARMS8)   2014   
Discussion on friction factor of single rock joint under slide-hold-slide process in considering influence of thermal conditions
Naoya Tsuda, Hideaki Yasuhara, Takao Yano, Kiyoshi Kishida
Mechanics Symposium (2014 ARMS8)   2014   
Evolution of Permeability in Granite Fracture under High pH Conditions
H. Yasuhara, N. Kinoshita, K. Maeta, S. Nakashima, K. Kishida
Proc. 8th Asian Rock Mechanics Symposium (2014 ARMS8)   2014   
Coupled THMC modelling of a single fracture in novaculite for DECOVALEX-2015
Bond A.E., Chittenden N., Fedors, R., Lang P.S., McDermott C., Neretniecks I., Šembera J., Watanabe N., and Yasuhara H.
Proc. International Discrete Fracture Network Engineering Conference   2014   
OPTIMIZATION OF TREATMENT AREA OF ENZYME MEDIATED CALCITE CEMENTATION: A NOVEL SOIL IMPROVEMENT TECHNIQUE
Debendra Neupane, Hideaki Yasuhara and Naoki Kinoshita
Proc. Fourth International Conference on Geotechnique, Construction Materials and Environment   2014   
H. Yasuhara, N. Kinoshita, M. Takahashi, S. Nakashima, K. Kishida
47th US Rock Mechanics / Geomechanics Symposium 2013   1 Dec 2013   
A series of long-term permeability experiments using Berea Sandstone and Horonobe Mudstone has been conducted so as to understand the evolution of rock permeability under stressed and temperature-elevated conditions. The well-controlled experiment...
Evaluation of the enzymatic calcite precipitation technique to improve the physical and mechanical properties of sand
Debendra NEUPANE, Hideaki YASUHARA & Naoki KINOSHITA
13th Japan Symposium on Rock Mechanics & 6th Japan-Korea Joint Symposium on Rock Engineering   2013   
Evaluation of Rock Permeability Alteration by Long-term Flow-through Experiments and by Microstructural Investigation
H. Yasuhara, M. Takahashi, N. Kinoshita, S. Nakashima, K. Kishida
Proceedings of the 6th International Symposium on In-situ Rock Stress   2013   
Chemo-Mechano Coupling Processes Inducing Evolution of Rock Permeability under Hydrothermal and Stressed Conditions [Invited]
Hideaki Yasuhara, Manabu TAKAHASHI, Kiyoshi Kishida, Shinichiro Nakashima
Eos Trans. AGU, Fall Meet. Suppl   2013   
KINOSHITA NAOKI, YASUHARA HIDEAKI, YATABE RYUICHI
岩の力学国内シンポジウム講演論文集(CD-ROM)   6 Dec 2012   
AOYAMA TARO, YANO TAKAO, NAKASHIMA SHIN'ICHIRO, YASUHARA HIDEAKI, KISHIDA KIYOSHI
岩の力学国内シンポジウム講演論文集(CD-ROM)   6 Dec 2012   
SAKIYAMA KUMIKO, KINOSHITA NAOKI, YASUHARA HIDEAKI, KAWAGUCHI TAKASHI
岩の力学国内シンポジウム講演論文集(CD-ROM)   6 Dec 2012   
KIKUCHI SAHO, YASUHARA HIDEAKI, KINOSHITA NAOKI, TAKAHASHI MANABU
岩の力学国内シンポジウム講演論文集(CD-ROM)   6 Dec 2012   
H. Yasuhara, N. Kinoshita, S. Nakashima, K. Kishida
46th US Rock Mechanics / Geomechanics Symposium 2012   1 Dec 2012   
A suite of permeability experiments on intact rocks in sandstone and on a single fracture in siliceous mudstone has been conducted under confining pressures of 3-15 MPa, and at temperatures of 20-90°C for several hundred days in each experiment. F...
K. Kishida, T. Hosoda, A. Sawada, H. Sato, S. Nakashima, H. Yasuhara
Harmonising Rock Engineering and the Environment - Proceedings of the 12th ISRM International Congress on Rock Mechanics   13 Feb 2012   
Although it is generally known that a natural rock fracture indicates a complex aperture distribution, the fracture is an ideal representation of the parallel plate model. The cubic law is applied to evaluate the hydraulic properties of fractured ...
H. Yasuhara, N. Kinoshita, S. Nakashima, K. Kishida
Harmonising Rock Engineering and the Environment - Proceedings of the 12th ISRM International Congress on Rock Mechanics   13 Feb 2012   
A suite of flow-through experiments in granite fracture is conducted under various temperature, confining pressure, and pH conditions, to examine the evolution of the fracture permeability. The well-controlled experiments are carried out at temper...
HASHIMOTO KATSUKI, YASUHARA HIDEAKI, KINOSHITA NAOKI
岩盤力学に関するシンポジウム講演集(CD-ROM)   2012   
ARAKI TAKENORI, YANO TAKAO, YASUHARA HIDEAKI, KISHIDA KIYOSHI
岩盤力学に関するシンポジウム講演集(CD-ROM)   2012   
Remedial measure for highway embankments on liquefaction prone foundation
M. Okamura, Y. Tomida, T. Okamoto, and H. Yasuhara
Proc. Second International Conference on Performance –based Design Earthquake Geotechnical Engineering   2012   
Evaluation of cementation effect of sand mediated by enzyme-induced calcium carbonate precipitation
Hideaki Yasuhara and Debendra Neupane
The 2012 World Congress on Advances in Civil, Environmental, and Materials Research (ACEM’ 12)   2012   
An Evaluation of the Effects of Fracture Diagenesis on Hydraulic Fracturing Treatment
Dae Sung. Lee, Derek Elsworth, Yasuhara Hideaki, Junhyung Choi, and Wiri Heo
Proc. 7th Asian Rock Mechanics Symposium (2012 ARMS7)   2012   
Healing and Shear Stress Reduction of Rock Salt Single Fracture under Slide-Hold-Slide Direct Shear Experiments
Kiyoshi Kishida, Takao Yano and Hideaki Yasuhara
Proc. 7th Asian Rock Mechanics Symposium (2012 ARMS7)   2012   
Spontaneous Alteration of Rock Permeability under Constant Confining Pressure and Temperature Conditions
Hideaki Yasuhara, Manabu Takahashi, Naoki Kinoshita, Shinichiro Nakashima and Kiyoshi Kishida
Proc. 7th Asian Rock Mechanics Symposium (2012 ARMS7)   2012   
Healing and Shear Stress Reduction on Single Fracture of Rock Salt and Limestone under Slide-Hold-Slide Direct Shear Condition
Kishida, K., Yano, T. and Yasuhara, H.
2012 Fall Meeting, AGU   2012   
K. Kishida, T. Araki, T. Yano, H. Yasuhara, D. Elsworth
45th US Rock Mechanics / Geomechanics Symposium   6 Dec 2011   
When estimating the mechanical and the hydro-mechanical properties of rock masses over long periods of time, the influence of the effective confining stress and the thermal conditions should be incorporated. In this research work, slide-hold-slide...
H. Yasuhara, K. Hayashi, M. Okamura
Geotechnical Special Publication   27 May 2011   
A grouting technique that utilizes precipitated calcite as cohesive material is presented. An enzyme of urease is used to enhance the rate and magnitude of the calcite precipitation. Evolutions in the mechanical and hydraulic properties of sand sa...
KISHIDA KIYOSHI, ELSWORTH DEREK, YANO TAKAO, YASUHARA HIDEAKI, NAKASHIMA SHIN'ICHIRO
岩盤力学に関するシンポジウム講演集(CD-ROM)   2011   
KADO KOICHI, HAYASHI KAZUYUKI, KINOSHITA NAOKI, YASUHARA HIDEAKI
岩盤力学に関するシンポジウム講演集(CD-ROM)   2011   
SUZUKI TAKASHI, YASUHARA HIDEAKI, KINOSHITA NAOKI, TAKAHASHI MANABU
岩盤力学に関するシンポジウム講演集(CD-ROM)   2011   
Fracture permeability in granite under temperature, confining pressure, and pH conditions controlled: Measurements and predictions by coupled chemo-mechanical model
H. Yasuhara, N. Kinoshita, S. Nakashima, and K. Kishida
Proc. 4th Int. Conf. GeoProc 2011: Cross Boundaries Through THMC Integration   2011   
Coupled chemical and mechanical effects on evolution of rock fracture permeability
H. Yasuhara, N. Kinoshita, S. Nakashima, and K. Kishida
Proc. The 2011 World Congress on Advances in Structural Engineering and Mechanics   2011   
Theoretical discussion on healing process of single rock fracture through Shear-Hold-Shear direct shear experiments
K. Hashimoto, H. Yasuhara, T. Yano, and K. Kishida
Proc. 24th KKCNN Symposium on Civil Engineering   2011   
Long-term evolution in intact and fracture permeability in sandstone and mudstone under stress and temperature conditions
H. Yasuhara, S. Nakashima, and K. Kishida
Proc. 24th KKCNN Symposium on Civil Engineering   2011   
K. Kishida, Y. Kawaguchi, S. Nakashima, H. Yasuhara
44th US Rock Mechanics Symposium - 5th US/Canada Rock Mechanics Symposium   1 Dec 2010   
In this paper, slide-hold-slide type direct shear-flow coupling experiments on single rock fracture and its theoretical simulation are performed so as to investigate the effects of long-term load holding on the mechanical and hydro-mechanical prop...
S. Nakashima, D. Hasegawa, K. Kishida, H. Yasuhara
44th US Rock Mechanics Symposium - 5th US/Canada Rock Mechanics Symposium   1 Dec 2010   
Microfocus X-ray CT imaging was conducted on a granite core, 50 mm in diameter and 100 mm in length, containing a single fracture in the longitudinal direction. The three-dimensional geometry and the aperture distribution of the fracture were eval...
H. Yasuhara, N. Kinoshita, S. Nakashima, K. Kishida
44th US Rock Mechanics Symposium - 5th US/Canada Rock Mechanics Symposium   1 Dec 2010   
A series of stirred-flow-through experiments using granite powder has been conduced under temperature and pH conditions controlled so as to evaluate the dissolution kinetics of the Mizunami granite. The well-controlled experiments are carried out ...
Mitsu Okamura, Masaya Takebayashi, Katsuji Nishida, Nao Fujii, Motoharu Jinguji, Takehiko Imasato, Hideaki Yasuhara, Emiko Nakagawa
Geotechnical Society of Singapore - International Symposium on Ground Improvement Technologies and Case Histories, ISGI'09   16 Nov 2010   
Desaturation of ground by air injection attracts considerable attention in resent years as an innovative technique for liquefaction countermeasure. Several research programs have been run in laboratories regarding related topics. This paper descri...
YASUHARA H., KINOSHITA N., NAKASHIMA S., KISHIDA K.
日本鉱物科学会年会講演要旨集   7 Apr 2010   
HASEGAWA DAIKI, KISHIDA KIYOSHI, NAKASHIMA SHIN'ICHIRO, YASUHARA HIDEAKI, YANO TAKAO, HOSODA TAKASHI
岩盤力学に関するシンポジウム講演集(CD-ROM)   2010   
KAWASHITA SATOSHI, KITA RYOTA, YASUHARA HIDEAKI, KINOSHITA NAOKI
岩盤力学に関するシンポジウム講演集(CD-ROM)   2010   
NAKASHIMA SHIN'ICHIRO, HASEGAWA DAIKI, YASUHARA HIDEAKI, KISHIDA KIYOSHI
岩盤力学に関するシンポジウム講演集(CD-ROM)   2010   
Temporal alternation of fracture permeability in granite by mechanically- and chemically-mediated dissolution
H. Yasuhara
Proc. G-COE Symposium 2010 Dynamic Earth and Heterogeneous Structure   2010   
Physical Properties of Calcite-Cemented Sand Improved by Urease-Type Biogrout
H. Yasuhara, K. Hayashi and M. Okamura
Proc. 23rd KKCNN Symposium on Civil Engineering   2010   
Evaluation of Fracture Permeability in Granite Influenced by Stress and Temperature
D. Hasegawa, S. Nakashima, H. Yasuhara and K. Kishida
Proc. 23rd KKCNN Symposium on Civil Engineering   2010   
D. S. Lee, D. Elsworth, H. Yasuhara, J. Weaver, R. Rickman
43rd U.S. Rock Mechanics Symposium and 4th U.S.-Canada Rock Mechanics Symposium   27 Nov 2009   
Observed reductions in the permeability of propped hydraulic fractures are examined by considering the role of mechanical stresses and the chemistry of pore fluids at elevated temperatures as agents of proppant diagenesis. Stress-enhanced dissolut...
H. Yasuhara, N. Kinoshita, S. Nakashima, K. Kishida
43rd U.S. Rock Mechanics Symposium and 4th U.S.-Canada Rock Mechanics Symposium   27 Nov 2009   
A coupled chemo-mechano conceptual model is presented to follow the evolution of fracture permeability observed in flow-through experiments in a single rock fracture in granite. The experiments are conducted under constant confining pressures of 5...
Y. Kawaguchi, S. Nakashima, K. Kishida, H. Yasuhara, Y. Takao, T. Hosoda
43rd U.S. Rock Mechanics Symposium and 4th U.S.-Canada Rock Mechanics Symposium   27 Nov 2009   
This paper presents direct shear test results for single jointed granite and mortar specimens to investigate effects of long-term load holding on mechanical and hydrological properties of rock joints. From the test results, it was confirmed that s...
KISHIDA KIYOSHI, NAKAJIMA SHIN'ICHIRO, YASUHARA HIDEAKI, HOSODA TAKASHI
岩盤力学に関するシンポジウム講演集(CD-ROM)   2009   
SHIGENAGA SABURO, NISHIYAMA YOHEI, KINOSHITA NAOKI, YASUHARA HIDEAKI
岩盤力学に関するシンポジウム講演集(CD-ROM)   2009   
KAWAI YUSUKE, NAKAJIMA SHIN'ICHIRO, YASUHARA HIDEAKI, KISHIDA KIYOSHI
岩盤力学に関するシンポジウム講演集(CD-ROM)   2009   
KAWAGUCHI YUDAI, KISHIDA KIYOSHI, NAKAJIMA SHIN'ICHIRO, YASUHARA HIDEAKI, YANO TAKAO, HOSODA TAKASHI
資源・素材   2009   
Estimation on shear strength and permeability during shear-holding single rock fracture
K. Kishida, Y. Kawaguchi, S. Nakashima, and H. Yasuhara
Proc. 22nd KKCNN Symposium on Civil Engineering   2009   
Predicting temporal change of fracture permeability in granite via chemical-mechanical coupling model
H. Yasuhara, S. Nakashima, and K. Kishida
Proc. 22nd KKCNN Symposium on Civil Engineering   2009   

Research Grants & Projects

 
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(B))
Project Year: 2009 - 2012    Investigator(s): Mitsu OKAMURA
Objective of this research is to develop a cost effective liquefaction countermeasure technique by air injection and to propose a design and execution manual. The following items are in particularly studied.(1) Mechanism of instability of existing...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(C))
Project Year: 2009 - 2011    Investigator(s): Naoki KINOSHITA
In this study, flow-through experiments on a single fracture in granite has been carried out under confining pressures of 5-10 MPa, and at temperatures of 20-90℃. The fracture aperture and the permeability monotonically decreased with time at room...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(基盤研究(C))
Project Year: 2008 - 2010    Investigator(s): Kiyoshi KISHIDA
This research presents a mechanical model for simulation of mass removal during multi-phase flow on subsurface, such as pollution advection, CO2 geo-sequestration and air sparging. Proposed model includes hydrodynamics of air and water phase ; cal...
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(若手研究(B))
Project Year: 2008 - 2009    Investigator(s): Hideaki YASUHARA
A series of flow-through experiments has been conducted using granite fractures at confining pressures and temperatures prescribed. The output reveals that the evolution in fracture permeability is strongly dependent on the stresses and temperatur...