淮北煤田濉萧矿区太原组灰岩岩溶发育特征

Karst development characteristics for Taiyuan formation limestone in Suixiao mining area of Huaibei coalfield

在充分收集濉萧矿区各矿勘探阶段和生产过程中地质及水文资料的基础上,分析了矿区太原组灰岩的埋藏条件和厚度,根据钻探探查出水特征,并结合钻孔岩心、测井曲线特征、简易水文观测成果,研究了矿区太原组灰岩岩溶发育特征。结果显示,矿区内太原组灰岩岩溶在平面上和垂向上具有不均一性,且岩溶发育程度向下有递减趋势。研究结果对矿区下组煤开采岩溶水害防治具有重要意义。

Based on the full collection of geological and hydrological data of each mine exploration stage and the production process,the burial conditions and thickness of Taiyuan Formation limestone were analyzed.According to the characteristics of water drilling explora-tion,and combined with the drilling core,well logging curve,simple hydrological observation,the karst development characteristics of Taiyuan Formation limestone was researched.The results show that,the karst of Taiyuan Formation limestone is inhomogeneous in the plane and vertical direction,and the degree of karst development has a decreasing trend downward.The research results could play a im-portant role in the predicting and controlling of water disaster of the karst in the mining of lower group coal.