煤层底板承压水体上带压开采的分析研究

Study on Coal Seam Bottom Confined Water Mining under Pressure Analysis

阳泉矿区保安井田奥灰水水位标高为+520—+531m,15号煤层底板标高在+240—+370 m,其下部的奥陶系灰岩强含水层,水头压力大,对采煤的威胁严重。针对上述情况,在分析井田情况后,系统的阐述了突水系数的计算方法,介绍了可采、带压开采与危险开采的辨别标准,最后分析了3种带压开采的防水技术,这些工作可为今后带压开采的研究提供一定的借鉴。

Yangquan Mining area Bao＇ an coalfield ordovician limestone water elevation is ＋520-＋53 lm, the elevation of No. 15 coal seam bottom is ＋240-＋370m, ordovician limestone down is strong limestone aquifer, with strong water head pressure, threatened mining seriously. Based on the situation, the coalfield circumstance was analyzed, the calculation method of water inrush coefficient was expounded systematic, the identify standard of mining, mining with pressure and dangerous mining was introduced, 3 kinds of water prevention technology with mining pressure was analyzed, which provided certain reference for the study of mining with pressure.