开平煤田范各庄矿2022工作面突水危险性分析

Analysis on water inrush danger of Fangezhuang Mine 2022 working face in Kaiping Coalfield

范各庄井田水文地质条件复杂,历史上曾发生多起突水事故,突水通道多为点状垂向导水构造,突水区域主要集中在井田北部塔坨向斜区。针对这一问题,以范各庄矿2022工作面为研究对象,系统分析该工作面的地质情况,并采用瞬变电磁、音频电透视和无线电波坑透三种物探方法,对该工作面底板的富水性及隐伏构造的发育情况进行了探测,采用钻探手段对物探异常区进行验证。结果表明,探查区域存在隐伏垂向导水构造,工作面底板隔水层已破坏,工作面回采施工存在突水风险。

Based on complex geological condition and multiple water inrush accidents in Fangezhuang Mine, water outburst channel mainly are dotted and vertical water conductive structures, water inrush area focused on Tatuo synclinal area in northern coalfield, 2022 working face of Fangezhuang Mine was taken as example, transient electromagnetic, audiovisual and radio wave pits technology were adopted to detect water-rich and concealed structures development, in the abnormal area with drilling technology. The result showed that the exploring area with invisible guide water structure, working face water-resisting layer was broken, recovering mining with water inrush risk.