急倾斜煤层群开采突水预测研究  

Study on water inrush prediction of steep coal seams group

作　　者：汪长明 

机构地区：[1]中煤科工集团重庆研究院有限公司,重庆400039

出　　处：《能源与环保》2017年第8期78-81,86,共5页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

摘　　要：针对煤矿突水危害的巨大威胁,以新疆某矿为对象,运用FLAC软件,对急倾斜煤层群开采过程中的突水机理及可能性进行研究。结果表明:从数值计算结果中的塑性区分布情况来看,1号、2号和3号煤层隔离煤柱在各煤层回采过程中,整体都处于拉伸破坏和剪切破坏状态下,各煤层的隔离煤柱均发生破坏;1号、2号煤层隔离煤柱的透水因子分别为1.50、1.24,说明1号、2号煤层隔离煤柱渗流均不稳定,发生透水的可能性较大。3号煤层隔离煤柱的透水因子为0.92<1,3号煤层隔离煤柱渗流均基本稳定,发生透水的可能性较小。Taking a mine in Xinjiang as the research object,this paper studies the mechanism and possibility of water inrush in the process of steep seam mining by using the finite difference numerical simulation software（FLAC）.The results showed that：from the distribution of plastic zone of the numerical calculation results,when No.1,No.2 and No.3 isolated coal pillar are in the coal mining process,the whole are in a state of tensile failure and shear failure,which can be used to identify the isolated coal pillar were destroyed.The permeability factor of No.1 and No.2 coal seam isolated coal pillar is respectively 1.50 and 1.24,which shows that the seepage of No.1 and No.2 coal seam is unstable,and the possibility of water seepage is larger.The permeability factor of No.3 isolated coal pillar is 0.92,which shows that the seepage of No.3 isolated coal pillar is basically stable,and the possibility of water seepage is small.

关 键 词：急倾斜煤层群 突水机理 老空区积水 灾害预测 数值模拟 

分 类 号：TD823.2[矿业工程—煤矿开采] TD745[矿业工程—矿山开采]