(1. Institute of Rock Mechanics and Fractals，China University of Mining and Technology，Beijing 100083，China；
2. Research Institute of Petroleum Exploration and Development-Langfang，Langfang，Hebei 065007，China；
3. State Key Laboratory of Coal Resources and Safe Mining，China University of Mining and Technology，Beijing 100083，China )
Abstract：Rock salt cavern is widely used for nuclear waste disposal，petroleum and natural gas storage and CO2 sequestration. The permeability of rock salt is too low to be obtained easily by experiments. The permeability of three different rock salt samples are obtained through the steady-state method. The permeability calculated by pseudo-pressure method and considering Klinkenberg effect are compared. The results show that：(1) The permeability and porosity of rock salt are extremely low，and the porosity is between 0.3% and 3%. The permeability of pure rock salt is about 10－20 m2，greater than that of impurity rock salt，which is between 10－20 and 10－21 m2. (2) During the permeability experiment，when the inlet pressure is 1–5 MPa，Klinkenberg effect is obvious. When the inlet pressure is higher than 5 MPa，the rock salt is damaged and the permeability increases. (3) By comparing the results，the method of considering Klinkenberg effect is more ideal than pseudo-pressure method in rock salt permeability calculation.
武志德1，2，周宏伟1，3，丁靖洋1，冉莉娜2，易海洋1. 不同渗透压力下盐岩的渗透率测试研究[J]. 岩石力学与工程学报, 2012, 31(s2): 3740-3746.
WU Zhide1，2，ZHOU Hongwei1，3，DING Jingyang1，RAN Lina2，YI Haiyang1. RESEARCH ON PERMEABILITY TESTING OF ROCK SALT
UNDER DIFFERENT PERMEABILITY PRESSURES. , 2012, 31(s2): 3740-3746.
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2012, Vol. 31 
