EXPERIMENTAL STUDY OF PERMEABILITY OF ROCK-LIKE MATERIAL WITH FILLING FRACTURES UNDER HIGH CONFINING PRESSURE
LIU Xinyu1,2,LIU Aihua1,LI Xibing1
(1. School of Resources and Safety Engineering,Central South University,Changsha,Hunan 410083,China;2. School of Architecture and Civil Engineering,Inner Mongolia University of Science and Technology,Baotou,Inner Mongolia 014010,China)
Abstract:The tests for permeability of rock-like sample with filling fractures under high confining pressure and hydraulic pressure are carried out. Based on the ratio test,the specimens simulating sandstone are made;and the tests are made by self-developed triaxial instrumentation. From the results,it is found that:(1) The permeability coefficients of different filling fractures specimens are different;but they are always in the same magnitude under different confining pressures. (2) The permeability coefficient shows downward trend with the increase of confining pressure. (3) The geometrical characteristic of permeability structural surface is one of main factors influencing permeability of sample;(4) Permeability law of sample should be based on the test results.
刘欣宇1,2,刘爱华1,李夕兵1. 高围压条件下含充填裂隙类岩石水渗流试验研究[J]. 岩石力学与工程学报, 2012, 31(7): 1390-1398.
LIU Xinyu1,2,LIU Aihua1,LI Xibing1. EXPERIMENTAL STUDY OF PERMEABILITY OF ROCK-LIKE MATERIAL WITH FILLING FRACTURES UNDER HIGH CONFINING PRESSURE. , 2012, 31(7): 1390-1398.
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