煤矿深部采区底板含水层放水试验

随着煤层开采深度的增加,煤层底板承压充水含水层发生水害的可能性随之增加,对基础地质参数补充和再认识具有重要的意义。以陈四楼煤矿南部深部采区为研究对象,通过非稳定流放水试验分析了陈四楼煤矿南部采区灰岩岩溶含水层的水文地质条件及其与奥灰水的水力联系,计算了灰岩含水层的水文地质参数。试验表明:区域内的太灰含水层属中等富水性至强富水性,不存在降不下去的高水位异常区,可以采取疏降和底板注浆加固的办法防止底板突水。

Dewatering Test of Floor Aquifers in Deep Mining Area of Coal Mine

With the increasing of coal mining depth,the possibility of water hazard from floor confined water-filled aquifer is also increasing.So it has great significance to supplement and further understand the basis geological parameters.Taking the South deep mining area of Chensilou coal as the research object,according to the unsteady flow dewatering test,the paper analyzes the hydrological and geological conditions of limestone karst aquifer and the hydraulic connection with the Ordovician limestone water in South deep mining area of Chensilou coal mine,and calculates hydrogeological parameters of limestone aquifer.The test results show that the limestone aquifer of Taiyuan Formation is moderate or strong water-rich,and there is no abnormal area of high water level which can not be released.So it can take the methods of decreasing pressure and grouting reinforcement to prevent the water invasion.