韩家洼煤矿采空区水污染物溶解释放规律研究  

Study on Pollutants Dissolution and Release Rules of Goaf Water in Hanjiawa Colliery

作　　者：王治文 李艳龙 孙建军 王亮 Wang Zhiwen;Li Yanlong;Sun Jianjun;Wang Liang(Zuoyun Hanjiawa Coal Industry Co.,Ltd.,Shanxi Coal Import and Export Group Co.,Ltd.,Datong,Shanxi,037100)

机构地区：[1]山西煤炭进出口集团左云韩家洼煤业有限公司,山西大同037100

出　　处：《江西煤炭科技》2023年第4期254-256,共3页Jiangxi Coal Science & Technology

摘　　要：我国煤炭资源开采历史时间长,开采强度大,遗留煤矿采空区规模庞大,采空区积水是煤矿典型的污染水源。由于我国干旱半干旱地区水资源的严重短缺,采空区水质安全与利用越来越被政府和人们所重视。通过大同市左云韩家洼煤矿采空区水水质分析,参考GB/T 14848-2017《地下水质量标准》进行了主要污染物指标评价,评价结果为韩家洼采空区水中永久硬度、暂时硬度都达到了地下水Ⅲ类的标准。在此基础上,采取韩家洼煤矿采区新鲜煤柱,开展了煤体浸泡试验,探讨了采空区水中污染物的溶解释放规律,试验结果表明:随着浸泡时间的变化,浸泡液中主要阴阳离子及总硬度、TDS等指标均呈上升趋势,且固液比越大,各主要参数的浸出浓度越高,这与采空区水与残留煤体、煤矸石发生溶滤作用有关。As a typical polluted water source in mines,the goaf water has been paid more and more attention due to the shortage of water resources in the arid and semiarid regions.Through analysis of the goaf water quality in Hanjiawa Colliery of Zuoyun County in Datong City and the evaluation of the main pollutant indicators with reference to“Groundwater Quality Standard”(GB/T 14848-2017),it is found that the permanent and temporary hardness of the goaf water in Hanjiawa Colliery have reached groundwater level III.Immersion tests of the fresh coal pillars from the Hanjiawa mining area have carried out for exploring the pollutants dissolution and release in the goaf water,whose tests results show that with the change of immersion time,the main anions and cations,total hardness,TDS and other indicators in the immersion liquid show an upward trend;the leaching concentration of each main parameter is higher with solid-liquid ratio increasing,which is related to the leaching of residual coal and gangue with the goaf water.

关 键 词：采空区水 水质评价 浸泡试验 溶解释放规律 

分 类 号：TD741[矿业工程—矿井通风与安全] P641.51[天文地球—地质矿产勘探]