煤矿瓦斯抽采系统的技术改造

Technical improvement of the drainage system for the underground gas

对魏家地煤矿瓦斯抽采系统进行了技术改造,建立了以井下抽采为主的瓦斯抽采和利用体系,通过掘前预抽、边掘边抽,工作面回采前瓦斯抽采率达到50%以上。对煤矿高突矿井的瓦斯综合治理,变害为利,提高煤矿安全生产水平具有重要的现实意义。

Carry on the technical improvement for the gas drainage system in Weijiadi coal mine, build the gas drainage-and-use system taking the underground drainage as main, and have the drainage ratio up to more than 50% before stopping, by pre-pumping before digging and digging with pumping. So there is an important realistic meaning for comprehensively treating gas in the high mine, turning bane into boon and increasing safe production level.