废弃煤矿矿井涌水污染成因及治理措施研究  

Study on Causes of Water Gushing Pollution and Treatment Measures

作　　者：朱登科 罗本全 徐江 袁小铭 唐云波 张绍科 ZHU Deng-ke;LUO Ben-quan;XU Jiang;YUAN Xiao-ming;TANG Yun-bo;ZHANG Shao-ke(Sichuan Geological Engineering Survey Institute Group Co.,LTD,Chengdu 610072)

机构地区：[1]四川省地质工程勘察院集团有限公司,成都610072

出　　处：《四川地质学报》2022年第4期625-628,共4页Acta Geologica Sichuan

摘　　要：依据广元市旺苍县永庆煤矿8#矿井涌水特征,调查矿井水的补给、径流、排泄条件,查明矿井涌水的污染成因,煤矿硐室系统成为良好集水廊道,汇集地下水;还原环境变为氧化环境,煤层中黄铁矿(FeS_(2))在氧气作用下生成硫酸铁与硫酸亚铁溶于水,矿井水呈酸性,三价铁离子水解生成氢氧化铁,呈黄褐色,对河流造成污染。实施“水闸墙”治理,有效解决了矿井涌水污染问题。According to the characteristics of No.8 inrush of Yongqing Coal Mine in Wangcang County,Guangyuan City,the recharge,runoff and discharge conditions of mine water are investigated to find out the pollution causes of mine inrush.The coal mine chamber system has become a good water collection corridor to collect groundwater.The reducing environment becomes oxidizing environment.The pyrite(FeS2)in the coal seam generates iron sulfate and ferrous sulfate under the action of oxygen.The mine water is acidic,ferric ion hydrolysis to produce ferric hydroxide,yellow brown in color,causing pollution to the river.The implementation of"sluice wall"treatment,effectively solved the problem of mine gushing water pollution.

关 键 词：矿井涌水 水文地质条件 污染 水闸墙 

分 类 号：P642.25[天文地球—工程地质学]