顶峰山矿区水文地质特征与防治水措施

Hydrogeological Features and Measures for Water Control in Dingfengshan Mine

顶峰山矿井地下水系统包括第四系孔隙含水岩组、煤系基岩裂隙含水岩组、栖霞灰岩裂隙-岩溶含水岩组和老空水;矿井充水水源有大气降水、含水岩组、断裂构造带和老窑积水,其中对矿井有突水危险的主要是导水性断层和老窑积水;由于矿井内发育的导水性断层为岩溶水进入煤系提供了通道,防治水的重点工作是探查导水性断层和老窑积水区,导水性断层的探查主要采用高分辨率三维地震勘探和瞬变电磁法相结合的探测方法;防治方法可根据实际情况采用留设防隔水煤(岩)柱、截流堵水、疏水降压和注浆加固等措施;老窑积水主要分布在F5断层以北地区,采取钻探与物探相结合的方法进行探查,主要防治方法为留设防水煤岩柱和探放水。

The groundwater system in Dingfengshan Mine includes quaternary pore aquifer group,fissure aquifer group of coal bed rock,fissure-karst aquifer group of Qixia limestone,and goaf water;the water in the system is generated from atmospheric precipitation,aquifer group,faulted structural belt,and goaf water,among them the faulted structural belt and goaf water are the major risks for the mine water inrush.The hydraulic conductivity of faulted structural belt,which is originated with in the mine,allows karst water to go into the coal mine,the key tasks for the water control in the mine focus on the investigation of the faulted structural belt and goaf water area.Methods for probing water conductivity belt mainly could rely on the combination of high-resolution three-dimensional seismic exploration with transient electromagnetic method for detecting;while methods of water prevention,according to the actual situation of maximum security,could be based on stay watertight coal（rock） column closure water shutoff,hydrophobic buck,and grouting reinforcement measures.As the goaf water is mainly distributed in north fault F5,the method for probing it is the combination of drilling with geophysical exploration,and methods for prevention are mainly building coal and rock pillars of waterproofing,probing water regularly,and leading it away in time.