| Budget Amount *help |
¥15,470,000 (Direct Cost: ¥11,900,000、Indirect Cost: ¥3,570,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2019: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2018: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2017: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
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| Outline of Final Research Achievements |
The scale and characteristics of new geothermal resources, "supercritical geothermal resources", which consist of fractured rocks containing supercritical water, are highly dependent on the permeability of the intrusive rocks and its host rocks. On the other hand, it has been suggested that the permeability may change drastically due to changes in mechanical properties or rocks such as the brittle-ductile transition, and fast, nucleation-type precipitation associated with fluid phase changes, but the details are unknown. In this study, we derived model equations of permeability behaviors involving changes in the mechanical properties of rocks and phase changes of fluids through laboratory experiments, and clarified the possibility of a prediction method of spatio-temporal evolution of supercritical geothermal resources by conducting spatio-temporal evolution simulations.
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