›› 2008, Vol. 29 ›› Issue (11): 3157-3160.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Testing study of gas permeability of fracture rock under peak stress

SONG Xin , LIU Wei-qun , SUN Deng-song , WANG Bo   

  1. College of Sciences, China University of Mining & Technology, Xuzhou 221008, China
  • Received:2007-02-02 Online:2008-11-10 Published:2013-08-07

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Abstract: A device combined with system of gas permeability measurement was designed to investigate the gas permeability of fracture rock under peak stress in mining. Several groups of fracture rock with elevations of ?653 m to ?771 m from Guqiao coal mine were employed as the standard samples of gas permeability testing. By the aid of MTS815, the samples achieved their peak stress, and the gas permeability of them was obtained in that elevations. Furthermore, one-dimensional permeability of non-Darcy flow and the solution of their gas infiltration rates are also analyzed theoretically. It is shown that, even in the deep-seated, the gas infiltration rate of rock of that kind is remarkable larger about 103?104 order than that of integrity rock. Meanwhile, the infiltration rate of fracture sandstone is higher than that of fracture mudstone in the same elevation.

Key words: peak stress, fracture rock, gas permeability, test

CLC Number: 

  • TU 457
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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