摘要
贺西煤矿属于柳林泉岩溶水系统,主要可采煤层为二叠系山西组3#、4#、6#煤层和石炭系太原组8#、10#煤层,奥陶系是煤系地层的基底,10#煤底板承受奥灰水最高压约6MPa。通过对奥陶系峰峰组水文地质条件的分析研究,认识该矿峰峰组富水性差,在无构造联通的情况下与下伏强含水层(上马家沟组)无水力联系;峰峰组顶部10m左右古风化壳可以做相对隔水层处理。该研究对开采对开采10#有一定的意义。
The Hexi coalmine is situated in the Liulin spring karst system. Main mineable coal seams have Nos.3, 4 and 6 in Permian Shanxi Formation and Nos.8 and 10 in Carboniferous Taiyuan Formation. Ordovician System is the basement of the coal measures strata; the coal seam No.10 floor bears Ordovician limestone water pressure up to 6MPa. Through the analytic study of Ordovician Fengfeng Formation hydrogeological condition, considered that the water yield property is poor in the Fengfeng Formation, and without hydraulic connection with underlying strong aquifer （upper Majiagou Formation） if no structural conduction existed. About lOm paleo- weathering crust of Fengfeng Formation can be regarded as a relative aquifuge. The study can be a reference in the mining of coal seam No.10.
出处
《中国煤炭地质》
2012年第12期47-48,52,共3页
Coal Geology of China
关键词
峰峰组
水文地质条件
富水性
古风化壳
贺西煤矿
Fengfeng Formation
hydrogeological condition
water yield property
paleo-weathering crust
Hexi coalmine
