潘二矿奥陶系岩溶地下水数值模拟及疏放性分析  

Numerical simulation of ordovician karst groundwater and analysis of dewatering scenario in Panji secondary coal mine in Huainan

作　　者：魏廷双 许光泉[2] 高宇航 党保全 孙贵[3] 丁庆和 杨婷婷 WEI Ting-shuang;XU Guang-quan;GAO Yu-hang;DANG Bao-quan;SUN Gui;DING Qing-he;YANG Ting-ting(Huaihe Energy Co.,LTD Paner coal mine,Anhui Huainan 232088;School of Earth and Environment Anhui University of Science and Technology,Anhui Huainan 232001;Exploration Research Institute of Anhui Coal Geology Bureau,Anhui Hefei,230071)

机构地区：[1]淮河能源潘二煤矿,安徽淮南232001 [2]安徽理工大学地球与环境学院,安徽淮准南232001 [3]安徽省煤田地质局勘探研究院,安徽合肥230071

出　　处：《地下水》2023年第2期13-16,共4页Ground water

基　　金：国家自然科学基金项目:“淮南煤田奥陶系古岩溶发育特征及形成机制研究”(42172279);华北煤田南缘岩溶陷落柱形成演化机制及预测研究(41572147)。

摘　　要：奥灰岩溶水是淮南煤田目前A组煤层开采水害威胁主要突水水源,预测和超前防治对于A组煤层安全开采具有十分重要现实意义。采用地下水系统分析、统计分析及数值模拟方法,对潘二矿“5.25”奥灰突水前后岩溶地下水动态进行系统分析,建立了数值模型,对比了防治方案,结果表明:奥灰水与太灰水之间水力联系程度存在较大差异性,其中与C_(3)III组含水层间水力联系密切,而与上部C_(3)I、C_(3)II组联系较弱;模拟结果间接反映了奥灰浅部裂隙、溶隙、岩溶塌陷较为发育,而深部岩溶发育相对较差;在防治方案上,将疏水降压与区域治理相结合是最佳方案,研究成果为矿井及类似矿山岩溶水害防治提供一定参考。Ordovician limestone water is the main karst water inrush source which has threatened to Group A mining in Huainan coal,and how to predict and prevent water inrush is of great practical significance for the mining securely.With the methods such as groundwater system analysis,statistical analysis and numerical simulation,groundwater dynamic data from"5.25"Ordovician karst water inrush was analyzed systematically,the results showed that there was different hydraulic connection between Ordovician and Carboniferous system limestone aquifers,and Ordovician limestone aquifer keep a better hydraulic relation with C_(3)II limestone aquifer,but a weaker hydraulic connection with Taiyuan CI and C_(3)II aquifer.Simulation results reveal indirectly that fractures,cracks and karst collapse are relatively developed in the shallow part of Ordovician aquifer,while the development of deep karst is relatively poor.In terms of prevention and control methods,the combination of drainage and reduction of water pressure with regional grouting control is the best,prevention measure and this research results can provide a certain reference for the prevention and control of karst water hazards in the mine and similar condition mines.

关 键 词：奥灰岩溶水 数值模拟 奥灰疏放性 潘二煤矿 

分 类 号：P641.134[天文地球—地质矿产勘探]