冲击地压煤层高位钻孔抽采参数优化研究  

Study on Parameters Optimization of High Level Extraction Boreholes in Rock Burst Seam

作　　者：许幸福 薛伟超 李艳增 王依磊 王同友 王海宾 

机构地区：[1]煤科集团沈阳研究院有限公司,辽宁沈阳110016 [2]煤矿安全技术国家重点实验室,辽宁抚顺113122 [3]山东唐口煤业有限公司,山东济宁272055

出　　处：《煤矿安全》2017年第4期157-159,163,共4页Safety in Coal Mines

基　　金："十二五"国家大型油气田及煤层气开发科技重大专项资助项目(2011ZX05041-003);"十二五"国家科技支撑计划资助项目(2012BAK04B01)

摘　　要：为优化高位钻孔参数,提高冲击地压煤层采空区上隅角瓦斯治理效果,以唐口煤矿5304工作面为工程背景,运用FLUENT流体仿真软件对不同参数高位钻孔瓦斯抽采模型进行了模拟分析。结果表明:高位钻孔终孔高度6倍采高,距煤层底板距离为27 m,钻场内钻孔数量为2个时可以达到最优抽放效果。现场实践表明采用优化钻孔可以控制工作面回风瓦斯体积分数最大值为0.56%,平均值为0.39%。For the optimization of high level borehole parameters, improving the effect of gas control in upper comer of rock burstcoal seam, taking 5304 working face in Tangkou Coal Mine as engineering background, the methane extraction models of differenthigh level borehole parameters were analyzed by fluid simulation software FLUENT. The numerical results show that the optimaleffect of methane extraction can be achieved when terminating height of high level borehole is 27 meters and it is six times that ofthe mining thickness, and drilling 2 holes in each drilling field. Field practice shows that the maximmn return air gas volume frac-tion at working face is 0.56%, the average value was 0.39%.

关 键 词：冲击地压 高位钻孔 上隅角 数值模拟 瓦斯抽采 瓦斯治理 

分 类 号：TD713[矿业工程—矿井通风与安全]