高瓦斯矿井瓦斯抽采半径关键参数的研究

Research on key technology of gas drainage radius in gas mine

论文根据矿井的实际情况,对井下钻孔抽采工艺和抽采半径进行考察,确定了现条件下矿井瓦斯抽采钻孔在91天时的有限半径,为1.5m,并通过优化目前的抽采工艺,合理布置抽采工艺参数,更大程度的提高钻孔抽采效率,明显改善了井下瓦斯抽采效果,提高煤层瓦斯抽采率和钻孔利用率,此次考察的钻孔瓦斯抽采影响半径可以作为瓦斯抽采的基本参数,此项目研究成果能有效缓解采掘接替紧张,促进安全生产。

According to the actual situation of the mine, the underground drainage process and drainage radius were investigated to determinethe drainage radius of boreholes in 91 clays in the present mine＇s condition was 1.Sin, and the extraction process is optimized, production pa-rameters of pumping reasonable layout, improve the drilling efficiency of gas drainage rate, the investigation of basic parameters of mining in-fluence radius of gas drainage can be used as the research results , can effectively relieve excavation tension, to promote safe production..