干旱地区矿区顶板水力性质变异机理  

Roof hydraulic properties variation mechanism in arid mining areas

作　　者：邢立亭[1,2] 武强[3] 谷亚伟[3] 

机构地区：[1]济南大学资源与环境学院,山东济南250022 [2]山东省地下水数值模拟与污染控制工程技术研究中心,山东济南250022 [3]中国矿业大学(北京)地球科学与测绘工程学院,北京100083

出　　处：《煤炭学报》2013年第12期2196-2201,共6页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(41172222)

摘　　要：西北干旱地区的侏罗纪煤田开采极大地破坏水资源,通过锦界煤矿排水量历时变化与水均衡分析,阐明了矿区开采前、后地下水循环模式的变化,基于煤矿开采前后矿区孔隙水、裂隙水以及双层混合水位特征研究,认为矿区顶板水力性质的变异是回采工作面推进过程中顶板隔水层的导通性与隔水层弥合性的统一演化过程诱发的,矿区顶板隔水层的导通性与弥合性改变矿区地下水循环途径,进而形成干旱地区的大水矿床。同时认为基于顶板水力性质变异的实时矿井涌水量预测方法将是下一步矿床水文地质学研究的重点问题。Coal mining in Jurassic coalfields of the arid Northwest area has damaged the local water resources greatly.Basing on the analysis of diachronic changes of the drainage and water balance of Jinjie Coal Mine,the paper gave some explanations of the changes of circulation patterns of groundwater before and after the mining. According to the changing characteristics of the water levels of pore water,fissure water and mixed water of double aquifers before and after mining,it was believed that the variation of the hydraulic properties of the roof aquifer in the mining area is mainly induced by the unified evolution of the transmission and closing property of roof aquifuge during the promoting process of mining face. The variation of the transmission and closing property of roof aquifuge changes the circulation pathways of mine groundwater,and the heavy-water deposits could be formed in the arid area. Also,the paper holds that the prediction method of real-time mine inflow based on variations of roof hydraulic properties will be one of the key issues in the future studies of deposit hydrogeology.

关 键 词：干旱地区 顶板 水力性质 导通性 弥合性 

分 类 号：TD327.2[矿业工程—矿井建设]