宁夏红一煤矿开采对水环境影响分析与评价  

Analysis and Evaluation of the Impact of Coal Mining on Water Environment in Hongyi Coal Mine of Ningxia Hui Autonomous Region

作　　者：王铎[1] Wang Duo(China Coal Technology&Engineering Group Beijing Huayu Engineering Company,Beijing 100120,China)

机构地区：[1]中煤科工集团北京华宇工程有限公司,北京100120

出　　处：《绿色科技》2021年第20期88-94,97,共8页Journal of Green Science and Technology

摘　　要：以宁夏红一煤矿开采区的水源为研究对象,运用单因子标准指数法、经验公式和采样监测等方法,分析了煤矿开采对地上水和地下水的水质影响。结果表明:2017~2018年期间银古公路桥断面水环境质量状况良好,排水对黄河及其兵沟等支流无影响;生活污水产生量为1193.27 m^(3)/d,主要污染物去除率可达到SS≥95%、BOD 5≥86.4%、COD≥86.7%、氨氮≥80%,处理后的水源全部回用不外排;矿进水主要污染物去除率可达到SS≥90%、COD≥71.2%、溶解性总固体≥30%,处理后的水源全部回用不外排;地下水水质检测结果显示总硬度、硫酸盐、氯化物、溶解性总固体超标,最大超标倍数分别为1.8,1.92,1.41,0.99;从导水裂隙带发育高度看,全部导通山西组、太原组煤系地层,部分导入二叠系石盒子组,未直接导通第四系松散类孔隙潜水含水层,不会发生第四系孔隙潜水向下伏含水岩段(组)直接渗漏的情况。故在非正常情况下,矿井水和生活污水发生泄露,对区外潜水水质影响较小。In this paper,the water source of Hongyi coal mining area in Ningxia is taken as the research object.The single factor standard index method,empirical formula and sampling monitoring methods are used to analyze the impact of coal mining on the water quality of surface water and groundwater.The results show that:during the period of 2017-2018,the water environment quality of Yingu highway bridge section is good,and the drainage has no impact on the Yellow River and its tributaries;the domestic sewage production is 1193.27m^(3)/d,and the removal rate of main pollutants can reach SS≥95%,BOD5≥86.4%,COD≥86.7%and ammonia nitrogen≥80%.All the treated water sources are reused without discharge;the removal rate of main pollutants in mine water can reach SS≥90%,COD≥71.2%and total dissolved solids≥30%.All the treated water sources are reused without discharge;groundwater quality test results show that the total hardness,sulfate,chloride and dissolved total solids exceed the standard,and the maximum exceeding times are 1.8,1.92,1.41 and 0.99 respectively;from the development height of water-conducting fracture zone,all coal measures strata of Shanxi Formation and Taiyuan formation are connected,and part of them are introduced into Permian rocks.The box formation has no direct connection with the Quaternary loose pore phreatic aquifer,and there will be no direct leakage of Quaternary pore phreatic water to the underlying aquifer section(Group).Under abnormal conditions,the leakage of mine water and domestic sewage has little impact on the groundwater quality outside the area.

关 键 词：地表水 地下水 矿井水 生活污水 导水裂缝带 

分 类 号：X703[环境科学与工程—环境工程]