摘要
在矿井开拓延伸过程中,穿越强含水层施工一直是难题,以开滦钱家营矿业有分公司(以下简称"钱家营矿")为例,对巷道穿过强含水层防治水技术进行研究分析。钱家营矿三水平暗立井上车场位于强含水层中施工,施工前该工作面5煤顶板至A层铝土岩底板砂岩裂隙含水层最大水压3.93 MPa,通过采用合理的探查方案,巷道未出现水害事故,疏降了该采区5煤层顶板含水层水位,为今后采掘活动提供了良好的水文地质条件。
In the process of mine development and extension,crossing the strong aquifer construction is one of the important causes of water disaster accidents.In the past roadway construction process of Qianjiaying Mining Branch in Kailuan,there have been fatal accidents caused by crossing the strong aquifer.Therefore,the prevention and control technology of the roadway crossing the strong aquifer should be studied and analyzed.The upper yard of the three level underground shaft is located in the strong aquifer.Before the construction,the maximum water pressure of the sandstone fissure aquifer between the 5 coal seam roof and the a layer of bauxite floor in the working face was 3.93 MPa.By adopting a reasonable exploration scheme,no water damage accident occured in the roadway,which greatly reduced the water level of the 5 coal seam roof aquifer in the mining area,providing a good hydrogeology for the future mining activities in the mining area.
作者
张亚南
Zhang Ya’nan(Qianjiaying Mining Branch of Kailuan Group,Tangshan 063301,China)
出处
《煤炭与化工》
CAS
2020年第5期75-78,81,85,共6页
Coal and Chemical Industry
关键词
强含水层
高水压
疏水降压
安全生产
strong aquifer
high water pressure
hydrophobic pressure reduction
safe production
