中文摘要：

对于两侧均为受岩溶水威胁的大水矿井,边界断层的水文地质特征对其两侧煤层开采、水害防治及水资源保护均有重要的影响.采用水文地质钻探、抽水试验及水化学分析等方法,获得断层两盘地层岩性、富水性、水化学及流场等数据,对下团柏边界断层的水文地质特征进行了深入分析.该断层延伸长,落差大,上下盘不同时代地层对接,上盘奥灰岩富水性、导水性均比下盘要弱;垂向上,导水性浅部差、深部好,呈“上阻水下导水”的水文地质特征,北面岩溶水可能通过深部岩溶导水通道穿越边界断层发生水力联系.根据上述特征,分析对比了南北两侧矿井面临的水害形势,提出了针对性的水害防治对策.

英文摘要：

For a mine threatened by the karst water on the two sides of its boundary fault, the hydro-geological characteristics of the boundary fault have great influence on the coal mining, water disaster prevention and water resource protection on its two sides. By adopting the methods such as hydro-geological exploration boring, water pumping test and chemical analysis and so on, the data of the stratigraphic lithology, water abundance, water chemistry and flow field on the two sides were obtained, and deeply analysis was made on the hydro-geological characteristics of Xiatubai boundary fault. This fault has long extension, big throw, the strata in different geologic ages on its ganger and lying sides were butted, and the water abundance and conductivity of the limestone on the hanger side were weaker than that of the lying side;in the vertical direction, the water conductivity of the shallow part was poor and that of the deep part was good, which showed the hydro-geological characteristics of "the hanger side blocking against water and the lying side conducting water", the north karst water may pass the boundary fault through the karst water channels in the deep part, as a result, the hydraulic connection happened. Based on above-mentioned hydro-geological characteristics, analysis and comparison were made on the water disaster situation of the mines on the north and south sides of the boundary fault, and the corresponding countermeasures for the water disaster prevention and control were put forward.