摘要
天安煤矿50601工作面开采受底板上马家沟组灰岩岩溶承压含水层水的威胁,为了实现该工作面的安全开采,分析了50601工作面的地质和水文地质条件,在回风顺槽和胶带顺槽中布置了83个钻孔向上马家沟组灰岩含水层顶部15 m范围内实施了注浆加固,所有钻孔成孔水量之和为642 m^(3)/h,共计注入水泥875.3 t,最终实现了工作面的安全开采,为防治煤层底板承压含水层水提供了经验借鉴。
The mining of No.50601 face in Tianan Mine was threatened by the water of upper Majiagou Formation limestone karst confined aquifer on the floor.In order to realize the safe mining of the working face,the geological and hydrogeological conditions of No.50601 face were analyzed.83 drilling holes were arranged in the return air roadway and the belt roadway to carry out grouting reinforcement within 15 m of the top of the upper Majiagou Formation limestone aquifer.The sum of water volume of all drilling holes was 642 m^(3)/h,and a total of 875.3 t of cement was injected.Finally,the safe mining of the working face was realized,which provided experience for the prevention and control of confined aquifer water in coal seam floor.
作者
董跃清
Dong Yueqing(Tianan Coal Mine Co.,Ltd.,Yangquan Coal Industry Group,Xinzhou 035100,China)
出处
《煤炭与化工》
CAS
2023年第3期59-61,66,共4页
Coal and Chemical Industry
关键词
煤层底板
承压含水层
注浆加固
coal seam floor
confined aquifer
grouting reinforcement
作者简介
董跃清(1991-),男,山西忻州人,助理工程师。
