顺层钻孔抽采瓦斯有效半径数值模拟与实测研究  

Numerical Simulation and Field Research on Effective Radius of Gas Drainage with Drill Hole along Coal Seam

作　　者：陈学习[1] 张亮[1] 陈鹏[1] 张凯[1] 

机构地区：[1]华北科技学院安全工程学院,北京东燕郊101601

出　　处：《华北科技学院学报》2016年第4期1-5,共5页Journal of North China Institute of Science and Technology

基　　金：中央高校基本科研业务费资助项目(3142015020;3142015001;3142015134)

摘　　要：为准确地确定顺层钻孔抽采瓦斯的有效半径,结合实际阳泉矿区某矿煤层赋存参数条件,运用FLUENT软件对单个钻孔和多个钻孔抽采下的煤层瓦斯渗流场进行了数值模拟分析。结果表明:该工作面抽采时间60 d的单个钻孔理论瓦斯有效抽采半径为1.73 m;多钻孔抽采条件下相邻钻孔的间距对瓦斯渗流场的影响具有一定的规律;数值模拟结果与实测结果具有较好的一致性。In order to accurately determine the effective radius of gas drainage with drill hole along coal seam, according to the actual basis parameters of coal seam in Yangquan mining area, the seepage field of coalbed gas with single and multiple drill hole were analyzed on numerical simulation by using the FLUENT software. The result shows that ：The theoretical effective gas drainage the extraction time of 60d is 1.73m; There is a regular radius with single borehole of this working face in pattern in mutual influence of neighboring boreholes distance on the seepage field of gas; The numerical simulation results and the measured results were unified well.

关 键 词：顺层钻孔 瓦斯抽采 有效抽采半径 数值模拟 

分 类 号：TD713[矿业工程—矿井通风与安全]