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Water-Rock Interaction During Evolution of Alkalescent Coal Mine Drainage
Author(s): 
Pages: 192-196
Year: Issue:  2
Journal: JOURNAL OF EARCH SCIENCES AND ENVIRONMENT

Keyword:  偏碱性矿井水水质演化水文地质学地球化学水岩作用;
Abstract: 针对中国淡水资源相对贫乏、煤矿开采不同程度地使水资源受到污染的现状,以阜新矿区为例,应用水文地质学和水文地球化学原理,研究煤矿开采条件下偏碱性矿井水演化过程中的水岩作用.结果表明:地层为碱性岩石和煤层含硫量偏低使矿井水酸碱度大于7,呈偏碱性.偏碱性条件使铁离子质量浓度降低,同时促进了氨氮硝化反应进行,使矿井水中硝酸盐和亚硝酸盐质量浓度增加.偏碱性条件也可能是造成氟质量浓度超标的主要原因.煤岩层地球化学特征是本地区偏碱性矿井水形成的基础,水岩作用对矿井水各组分的变化具有重要影响.
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