中文摘要：

通过水文地质调查、采样分析并结合地下水流动系统理论,对鄂尔多斯某一典型砂质基底排矸场煤矸石淋滤液对地下水环境的影响进行研究.结果表明,煤矸石的堆放改变了地下水流动系统的原有特征,矸石场由地下水的排泄区转变为地下水的径流区,矸石场底部煤矸石长期浸泡在地下水中,有毒有害物质大量析出并随地下水的径流向下游扩散.矸石场下游地下水及附近出露的地表水中铬、砷、氟、硝酸根、铜、锌、镍、锰等污染因子远远高出背景值.其中水源地附近地下水中砷浓度为1.013 mg/l,高出背景值148倍,硫酸根浓度为602 mg/l,高出背景值14倍.图4,表1,参8.

英文摘要：

Based on the hydro-geological survey, sampling analysis and combined with groundwater flow systems theory, the paper studied the impact of coal waste leachate of a typical sandy base coal waste field in Ordos on groundwater environment. The results showed as follows: piling of coal waste has changed the original characteristics of groundwater flow systems;coal waste field has turned from ground-water discharge areas into the runoff areas;the coal waste in the coal waste field has been immersed into groundwater, which resulted in a great deal of toxic and hazardous substances were unleashed and spread to downstream areas with the flow of groundwater. Chromium, arsenic, fluoride, nitrate, copper, zinc, nickel, manganese, etc. in the downstream groundwater were seriously polluted. Concentration of arsenic was 1. 013 mg/l, which was 148 times as much as background value, while that of SO4 2 was 602 mg/l, which was 14 times as much as background value .4figs.,1tab.,8refs.