地面钻井抽采卸压煤层及采空区瓦斯的流量计算模型  

A calculation model for gas flow rates in surfaces boreholes extracting gas from pressure-relieved seams and gobs

作　　者：周福宝[1] 夏同强[1] 刘应科[1] 胡胜勇[1] 张占国 

机构地区：[1]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221008 [2]神华宁夏煤业集团公司乌兰煤矿,宁夏石嘴山753003

出　　处：《煤炭学报》2010年第10期1638-1643,共6页Journal of China Coal Society

基　　金：教育部新世纪优秀人才资助项目(NCET-08-0838);中国矿业大学煤炭资源与安全开采国家重点实验室开放研究基金资助项目(09KF11);神华集团重点科技攻关项目

摘　　要：以神华宁夏煤业集团乌兰煤矿地面钻井瓦斯抽采系统为研究背景,根据质量守恒和能量守恒定律,建立了确定地面钻井抽采卸压煤层及采空区瓦斯流量的数学模型,采用该模型对乌兰煤矿保护层开采区域钻井抽采的不同瓦斯源的流量进行了计算,结果表明,2、3号卸压煤层瓦斯抽采量占总抽采量的52.0%～89.1%,充分反映了保护层开采具有显著的卸压效果。The research was carried out with the background of surface boreholes extraction system at Wulan Coal Mine,Shenhua-Ningxia Coal Industry Group.In accordance with the conservation principle of mass and energy,the mathematical model for calculating gas flow rate of boreholes extracting gas from gobs and pressure-relieved seams was established.The flow rates of different gas sources,which were extracted by boreholes in the mining district of the protective coal seam at Wulan Coal Mine,were calculated with the model above.The results show that the gas flow rate from pressure-relieved seams 2 and 3 is from 52.0% to 89.1% of total gas flow.

关 键 词：地面钻井 瓦斯抽采 卸压煤层 瓦斯流量 

分 类 号：TD712.6[矿业工程—矿井通风与安全]