The low- permeability rock is the main material and geological environment for storing under-ground oil and gas,CO2 and radioactive waste,and also a complex media usual using in water resourceand hydropower. In this study,based on the gas permeability and porosity test system jointly developed bythe Rock Mechanics Laboratory of Geotechnical Research Institute of Hohai University of China and LilleUniversity of Science and Technology of France,using the inert gas of argon as the fluid medium,thestress-depend...