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Volume 34 Issue 3
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SUN Qiang, JIANG Zhen-quan, ZHU Shu-yun. Experimental study on permeability of soft rock of Beizao Coal Mine[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(3): 540-545.
Citation: SUN Qiang, JIANG Zhen-quan, ZHU Shu-yun. Experimental study on permeability of soft rock of Beizao Coal Mine[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(3): 540-545.
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Experimental study on permeability of soft rock of Beizao Coal Mine

  • 1. School of Resources and Earth Science, China University of Mining and Technology, Xuzhou 221116, China; 2. State Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining & Technology, Xuzhou 221116, China; 3. Key Laboratory of Engineering Geomechanics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing100029, China

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  • Received Date: March 16, 2011
  • Published Date: March 29, 2012
    Graphical Abstract
    • Abstract
  • Considering the relation between permeability-strain curve and rock failure process of roof of Beizao Coal Mine, the relationship among permeability, strain and stress of rock is analyzed based on the permeability-strain curve and permeability-stress curve under complete stress-strain path. The results show that the rock can be divided to three groups, that is, sandstone, mudstone and sandstone with coarse gravel. The lowest permeability of rock corresponds to its expansion point. The stress-strain path can be divided into three stages, which are compaction-elastic range, yield range of pre-peak and post-peak range. It is proposed that the change of rock permeability is caused by the interaction of the smaller micro-scale level burst, which results in the formation of permeable channels.
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    • References (17)
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