journal6 ›› 2014, Vol. 35 ›› Issue (4): 46-49.DOI: 10.3969/j.issn.1007-2985.2014.04.011

• Civil Engineering • Previous Articles     Next Articles

Influence of Confining Pressure over Permeability of Fractured Maokou Limestone

 WANG  Xing-Hong, WAN  Wen, DUAN  Yan-Ping   

  1. (College of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,Hunan China)
  • Online:2014-07-25 Published:2014-07-21

Abstract: The impact of confining pressure on the permeability of fractured Maokou limestone.Maokou limestone sample was cored from coal dam was analyzed MTS815 rock mechanical system was used to research the permeability under different confining pressures and the same axial pressure.The test results showd that permeability decreased with confining pressure increase under the same axial pressure,and when confining pressure was low,permeability of fractured Maokou limestone changed largely with confining pressure increase;on the contrary,the permeability changed relatively little when confining pressure was high.Volumetric stress,permeability coefficient and osmotic pressure were fitted well by exponential function.

Key words: permeability, confining pressure, volumetric stress, osmotic pressure

WeChat e-book chaoxing Mobile QQ