基于定向钻孔的底板探放水技术及工程实践

Floor water exploration and drainage technology and engineering practice using directional drilling

为了解决张集煤矿"A组煤"开采中面临的底板灰岩含水层水害问题,引进目前国内领先的定向钻进技术应用于底板探放水钻孔并取得成功。在-600疏水巷施工定向钻孔工程治理1612A和1613A工作面底板灰岩水害,目前已在该2个工作面疏水巷水害治理工程中施工钻孔15个,总进尺达5480m,探明2个重要出水点,有效地解决了工作面底板灰岩水害探查问题,形成了张集煤矿基于定向钻孔的工作面底板灰岩探放水技术,可在相似矿井广泛地开展工程应用。

Aiming at the water hazard of floor limestone aquifer in the mining of"Group A Coal"in Zhangji Coal Mine,the directional drilling technology is introduced to the floor water exploration and drainage drilling. The directional drilling project in-600 water drainage roadway is constructed to control the water hazard of floor limestone in 1612 A and 1613 A working faces.15 boreholes are constructed in the water hazard control projects of drainage roadway in the two working faces. With a total footage of 5480 m and two important water outlets identified,the problems of water hazard detection of working face floor limestone can be solved. The technology of water exploration and drainage of working face floor limestone based on directional drilling in Zhangji Coal Mine is formed,which can be widely applied in similar mines.