顾北煤矿岩溶地下水动态特征及影响因素分析
Dynamic Characteristics and Influencing Factors of Karst Groundwater in Gubei Mine

研究深埋开采条件下岩溶地下水动态变化特征，对于分析含水层之间的水力联系及岩溶水害的防治具有十分重要意义。以淮南顾北煤矿为例，通过现场放水试验、采样测试与统计分析等方法，结合进一步水文地质探查和注浆治理工程，分析了南一1煤采区底板C₃I组灰岩含水层的水位、水质和水温等动态变化特征及影响因素。结果表明：区内C₃I组灰岩含水层浅部露头区岩溶裂隙相对发育，其富水性和渗透性相对较好，向深部富水性逐渐变弱、连通性逐渐变差特点。通过对岩溶含水层探查、注浆治理阻断了深部C3III和奥灰含水层与浅部含水层(C₃I、C₃II组)之间垂向水力联系，并得到了验证，从而为该矿深部岩溶水害防治提供依据。
The study of the dynamic characteristics of karst groundwater under the condition of deep mining is very important for analyzing the hydraulic relationship between different aquifers and the prevention and control of water inrush from aquifers under coal seam. Taking Gubei Coal Mine in Huainan as research object, through the methods such as dewatering test of aquifers, sampling and testing and statistical analysis, combined with the local advanced hydrogeological exploration and grouting project, the dynamic variation of characteristics (water level, water quality and water temperature) of group C₃I aquifer under the coal floor in the first southern coal mining area and its factors are analyzed. The results show that karst fractures are relatively developed in the shallow outcrop of C₃I limestone aquifer which is some abundance and permeability, while with increase of depth, its abundance, permeability and connection gradually become weak and the connectivity gradually becomes worse. Through further exploration to karst aquifers and grouting treatment, the vertical hydraulic connections between the shallow aquifer (aquifer of C₃I and C₃II) and the deep one (aquifer of C₃III and Ordovician) have been blocked up and verified, which has provided a scientific basis for the prevention and control of karst water hazards in Gubei Coal Mine.