朝阳露天煤矿地下水控制方法优化  

Optimization of groundwater control methods in Chaoyang Open-pit Coal Mine

作　　者：杨庆龙 仝宇珍 YANG Qinglong;TONG Yuzhen(Chaoyang Open-pit Coal Mine,Baoqing Coal Electrochemical Co.,Ltd.,Shuangyashan 155625,China;Dadi Engineering Development Group Co.,Ltd.,Beijing 100102,China)

机构地区：[1]宝清煤电化公司朝阳露天矿,黑龙江双鸭山155625 [2]大地工程开发(集团)有限公司,北京100102

出　　处：《露天采矿技术》2023年第4期94-97,共4页Opencast Mining Technology

摘　　要：朝阳露天煤矿含水层渗透性差,存在垂直降水孔过滤器和近井含水层堵塞问题;为了有效降低地下水位,分析了在井滤料层增加冲洗过滤管后降水孔的出水效果,探究了在采掘场台阶松散含水层实施大孔深水平放水孔的可实施性。结果表明:冲洗过滤管的应用能有效减少滤料中的细颗粒沉积物和井管过滤器表层附着物,改善降水孔堵塞问题,提高垂直降水孔的出水能力;大孔深水平放水孔在松散含水层成功实施,疏水效果明显。The permeability of the aquifer in Chaoyang Open-pit Coal Mine is poor,and there are problems of clogging vertical dewatering well filters and aquifers.In order to effectively reduce the groundwater level,the article analyzes the water outlet effect of the vertical dewatering well after adding the flushing filter tubes to the gravel pack layer of the well,and explores the feasibility of implementing a large depth horizontal well in the unconsolidated aquifers of the mining working benches.The results show that the application of flushing filter tubes can effectively reduce fine particle deposits in the gravel pack layer and attachment on the surface of the well filter,which can mitigate the occurrence of clogging and increase the flow rate of the vertical dewatering wells.The horizontal wells with a large depth have been successfully implemented in unconsolidated aquifers,and the drainage effect is very good.

关 键 词：露天煤矿 地下水控制 松散含水层 降水孔 水平放水孔 

分 类 号：TD807[矿业工程—矿山开采]