|Budget Amount *help
¥41,210,000 (Direct Cost: ¥31,700,000、Indirect Cost: ¥9,510,000)
Fiscal Year 2017: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2016: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Fiscal Year 2015: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
Fiscal Year 2014: ¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000)
|Outline of Final Research Achievements
In this study, flow-through experiments and mechanical experiments using rock samples under prescribed pressure, temperature, and pH conditions were conduced to examine the evolution of the physical properties of rocks. Then, a conceptual models were developed to replicate the experimental measurements. Finally, a coupled THMC numerical model was developed to examine the long-term change in permeability of the porous sedimentary rocks that are assumed to be composed purely of quartz. Subsequently, by simulating the burial of high-level radioactive wastes in the deep subsurface, namely, by applying the simulated confining pressure and temperature conditions, the long-term evolution of the rock permeability was predicted.