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针对梅河煤矿0305-3残采区受采空区积水和第四系底部砂砾含水层的充水隐患问题,通过井下瞬变探测技术对该采区工作面巷道上部采空区进行探测,找出采区顶底板砂砾含水层存在充水隐患的异常区域,在该采区特定的开采条件下,针对性地采取在井下打探放钻孔对异常区域进一步监测并对采空区进行探放水,以及在地面打抽水钻孔进行抽水疏降并布置观测孔对水位变化进行观测的疏放水安全措施。
Aiming at the problem of water flooding in the residual area of 0305-3 coal mine in Meihe Coal Mine and the gritty aquifer in the bottom of the Quaternary, the underground gob area in the working face of the mining area was probed by transient detection technology Under the specific mining conditions of the mining area, there is an exploratory area for further monitoring of the anomalous area by drilling underground holes and exploiting and draining the goaf, As well as drainage holes in the ground for pumping water to drain and layout of the observation hole to observe changes in the level of water safety measures.