兖州煤田红层特征及其水文地质意义

Occurrence Features and Hydrogeotogical significance of Red Bed in Yanzhou Coal Field

兖州煤田的上侏罗统红层直接覆盖于二叠、石炭系煤系地层之上。通过现场资料分析和大量室内测试结果 ,系统研究了兖州煤田侏罗系红层的分布赋存特征、化学成分及矿物组成 ,以及储水空间类型和充水、突水的特征。得出结论 :在岩性和构造适宜地段 ,红层中可以赋存较为丰富的地下水 ,它们常通过采动裂隙引发突水事故 ,从而对煤矿的安全生产造成威胁。

Upper Jurassic red bed cover directly on coal measure strata of Permian and Carboniferous system in Yanzhou coal field .A systematical study of chemical and mineralogical compositions of red beds ,pattens of water storing void and water inrush features is made by means of analysis of exploration and laboratory data .Then reach a conclusion that the red bed can store plentiful ground water in some suitable areas with lithologic and structural conditions. As a important source of filling mine shaft ,it often cause water inrush from mining induced fissures into mine workings to threaten coal production.