Variation of rock permeability during deformation and failure

通过对支笏熔结凝灰岩、木町砂岩和稻田花岗岩在不同围压和温度下的三轴压缩试验，研究了凝灰岩和砂岩的渗透率变化规律及其机理，阐明了凝灰岩和砂岩的渗透率随围压和温度的升高而降低，高温下的渗透率随围压和温度的升高而增大。这些研究结果将有助于以较低的成本设计和建造更安全的地下开口。

Triaxial compression tests were carried out on Shikotsu welded tuff,Kimachi sandstone and Inada granite under several confining pressures and temperatures,aiming to clarify permeability variation and mechanisms of it. It was clarified thatpermeability decreased by failure for tuff and sandstone and that flow rate increased underhigh temperature. It would be expected that these findings will contribute for design andconstruction of safer underground openings with lower cost.