煤炭开采对干旱半干旱地区地下水资源的影响  

Influence of Coal Mining on Underground Water Resources in Arid and Semiarid Region

作　　者：罗安昆 李瑾 杨建 刘基 王强民 LU0Ankun;LI Jin;YANG Jian;LIU Ji;WANG Qiangmin(China Coal Technology and Engineering Group Xi'an Research Institute,Xi'an 710077,China;Shaanxi Key Lab of Mine Water Hazard Prevention and Control,X i 'an 710077,China)

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710077 [2]陕西省煤矿水害防治技术重点实验室,陕西西安710077

出　　处：《煤矿安全》2018年第12期216-220,共5页Safety in Coal Mines

基　　金：国家重点基础研究发展计划(973计划)资助项目(2017YFC0804102;2017YFC0804103;2017YFC0804106)

摘　　要：干旱半干旱地区的煤-水协调开采一直是热点问题。以陕北能源化工基地为例,对区内多个大型矿井的煤炭产量及排水量进行统计分析,确定平均吨煤排水系数,并对4个采煤强度有代表性年份的排水量进行计算。后结合近20年来降雨量观测资料及观测井水位资料,对采煤排水条件下的地下水位埋深、降雨入渗补给量、蒸发量进行定量计算,并分析了地表水与地下水、矿井水与地下水之间的转化关系。结果表明:研究区内煤炭大规模开采造成大量矿井排水是水资源量衰减和三水转化关系改变的主要原因。Coordinated mining of coal and water resources in arid and semiarid region has always been a focus problem. The research takes Energy and Chemical Base in Northern Shaanxi as an example, and carries out statistical analysis on coal yield and drainage volume from several large-scale mines in the mining area. Meanwhile, the research determines average drainage coefficient per ton of coal, and calculates drainage volume in different mining intensity of four typical years. Then during mining drainage, with the combination of precipitation observation data in recent two decades and water level data of observation well, the calculation of groundwater table, rainfall infiltration recharge, and evaporation capacity is performed. Moreover, the research analyzes the transforming relationship between surface water, mine water, and groundwater. The result shows that the main reason for reduction of water resources quantity and transforming relationship between surface water, groundwater, and mine water is massive mine drainage, which is caused by large-scale coal mining in the research area.

关 键 词：采煤排水 干旱半干旱区 地下水资源 水循环 神府榆矿区 

分 类 号：TD741[矿业工程—矿井通风与安全]