煤矿老空水探放方法探讨

Discussion on the method of water exploration in old coal mine

济宁二号煤矿煤系地层含水层丰富,在采掘生产中存在老空水水害威胁。沿空掘进巷道利用工作面附近现有巷道、切眼,采用打钻探放水与"边探边掘"施工相结合的方式探放老空水,不仅有效提高了巷道掘进速度,而且增大了放水量和放水速度,缩短了探放水时间,确保了安全生产和矿井生产接续。

The coal bearing strata of Jining No. two coal mine are rich in aquifer, and there is a threat of water and water hazards in mining and production. The gob-side drifting roadway utilizes the existing roadways and cut holes near the working face to explore and drain the old empty water by the combination of drilling water drainage and ＂side-exploration and side-excavation＂ construction, which not only effectively improves the drifting speed of the roadway, but also increases the amount and speed of water drainage, shortens the time of water exploration and drainage, and ensures the safe production and the production connection of the mine. Continue.