同忻矿大口径W1#瓦斯钻孔穿越煤层采空区技术探析

Discussion on Tongxin Mine W1# Coal Seam Gas Drilling Through the Aperture of Space Technology

同煤国电同忻煤矿于2007年开工建设,是同煤集团的主力生产矿井,但由于侏罗系煤层的逐年开采而形成了大面积的采空区,给井下瓦斯抽采钻孔施工和煤层开采带来一定困难。文章总结了过采空区大口径瓦斯抽采钻井施工技术,是目前国内最大口径钻井过三层采空区技术的先例。

Tongxin Coal Mine of Datong Coal Mine Group started the construction in 2007, and it was the main production mine in Datong Coal Mine Group. Due to the exploitation of Jurassic coal seams year by year and the formation of the large area of mining goaf, some certain difficulties were brought to mine gas pumping mining drilling construction and coal mining exploitation. This article is a summary of the large diameter gas drainage drilling technology in the mining empty area, and it is currently the precedent of using the technology of largest diameter drilling to drill through two layers of mining goal area.