瓦斯抽采钻孔合理间距的数值模拟分析  

Numerical Simulation of Reasonable Spacing of Gas Drainage Drilling

作　　者：冯好收 赵忠明[1] 张乐[1] 

机构地区：[1]河南理工大学能源与科学工程学院,河南焦作454000

出　　处：《山东煤炭科技》2016年第9期80-83,共4页Shandong Coal Science and Technology

摘　　要：瓦斯抽采是防治瓦斯灾害的有效措施之一.本文以大宁煤矿303工作面的瓦斯赋存情况为研究对象,为煤层瓦斯流动建立了数学模型,利用Comsol Multiphysics进行数值模拟分析。研究了不同钻孔间距对瓦斯抽采效果的影响,并得出结论:确定了8m为本煤层合理的钻孔间距,此时,在抽采和经济效果两者之间得到了满意的平衡。Gas drainage is one of the effective measures to prevent the gas disaster, Taking the NO.303 coalface the gas occurrence situation of Darting coal mine to be the study object. Using Comsol Multiphysics to conduct the numerical simulation analysis build up a mathematical model of the flow of coal seam gas. The effects of different drilling distance on gas drainage were studied, and concluded： that the reasonable Seam drilling spacing is 8m, in this case the coal mine has obtained a satisfactory balance not only in the drainage effect but also the economic effect.

关 键 词：钻孔间距 瓦斯抽采 数值模拟 

分 类 号：TD712.6[矿业工程—矿井通风与安全]