Development of conceptual model describing long-term evolution of permeability in fractured rocks under coupled thermo-hydro-mechano-chemical conditions
| Project/Area Number |
23360401
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Earth system and resources enginnering
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| Research Institution | Ehime University |
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Principal Investigator |
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| Project Period (FY) |
2011-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000)
Fiscal Year 2013: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2012: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2011: ¥9,100,000 (Direct Cost: ¥7,000,000、Indirect Cost: ¥2,100,000)
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| Keywords | 岩盤 / 透水特性 / 鉱物溶解・沈殿 / 岩石不連続面 / 模擬セメント溶液 / 鉱物溶解 / 連成現象 / 力学クリープ / 温度・拘束圧 |
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| Outline of Final Research Achievements |
This study has examined a long-term evolution of permeability in fractured rocks under various stress and temperature conditions. The experimental observations show that the permeability decreases with time and the rate and the magnitude of the changes are more significant at higher temperature, which should result from the geochemical reactions such as mineral dissolution and precipitation. I have developed a numerical model that predicts the long-term evolution of permeability under arbitrary stress and temperature conditions. The predictions agree with the experimental measurements, indicating the validity of the developed model.
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Report
(4 results)
Research Products
(6 results)
