综采放顶煤工作面高位巷顶板涌水诱因浅析及防治对策

Cause brief analysis and prevention and control countermeasures of water burst in the high-level roadway roof of fully mechanized top coal caving face

通过对崔木煤矿21305工作面回采期间的生产连续性、矿压规律显现、瓦斯抽放量、采放高度及探煤数据、水文长观孔水位变化等资料的全面系统分析,查明了此次综放工作面高位巷发生涌水的诱因、机理,并提出了预警体系的完善方法及离层水的防治对策,为相似条件工作面的安全回采指明了方向。

The production continuity, the laws of rock strata pressure manifestation, the gas drainage volume, the height of mining and caving , the coal explored data, the variation of water level in the long-term observation hydrological holes during the mining of fully mechanized top coal caving face were comprehensively and systematically analyzed, the cause and mechanism of water burst in the high-level roadway roof of fully mechanized top coal caving face were found out, and the improved method of early warning system and the prevention and control counter- measures of water burst through bed separated fissures were proposed, which provides direction for safety mining of similar condition working face.