低透气性特厚煤层瓦斯立体式抽采技术研究  

Research on gas stereo-extraction technology in super-thick coal seam with low permeability

作　　者：崔光磊[1] 熊伟[1] 

机构地区：[1]中国矿业大学安全工程学院,江苏省徐州市221116

出　　处：《中国煤炭》2012年第10期87-89,109,共4页China Coal

摘　　要：针对魏家地煤矿东102工作面低透气性特厚煤层放顶煤开采造成工作面瓦斯超限现象,采用顶板巷、高位钻孔和地面钻井对采空区及煤层瓦斯进行立体式抽采,实践结果表明:上隅角瓦斯浓度保持在0.15%以下,回风瓦斯浓度在0.3%以下,瓦斯抽采率达到60%以上,成功解决了低透气性特厚煤层工作面瓦斯超限的问题。Aiming at the gas overrunning phenomenon resulted from the caving mining in super-thick seam with low permeability in East 102 working face of Weijiadi Mine,the gas stereo-extraction is conducted in goaf and coal seam through roof lane,high-level borehole and surface drilling.The tests show that the gas concentration keeps at 0.15% in upper corner,below 0.3% in return air and gas drainage rate reaches more than 60%,which have successfully resolved the problem of gas overrunning in the working face of super-thick coal seam with low permeability.

关 键 词：特厚煤层 瓦斯抽采 顶板巷 高位钻孔 地面钻井 

分 类 号：TD712.62[矿业工程—矿井通风与安全]