神东矿区地表水和地下水水化学特征及其影响因素研究

doi:10.11799/ce202204026

摘要/Abstract

摘要： 为加深采矿区地表水和地下水水化学组成及其影响因素的研究，以神东矿区地表水和地下水为研究对象。采用Piper三线图、Gibbs模型、Na端元图、WQI法和TH-TDS等方法，探究了该矿区地表水和地下水水化学组成特征及其控制因素，并进行饮用适宜性评价。结果表明，神东矿区地表水和地下水均呈弱碱性，地表水pH值整体上大于地下水，地下水EC值整体上高于地表水，地下水TDS值也明显大于地表水，地下水TH值整体上较地表水值更大且变化范围更广|地表水和地下水的优势阴阳离子均为HCO3-和Na+，其水化学类型均为Cl-SO4-Ca-Mg。神东矿区地表水和地下水水化学组成主要受到硅酸盐岩和蒸发盐岩的风化影响，同时碳酸盐岩风化也有一定作用。此外，对研究区地表水和地下水水质进行饮用适宜性评价可知，研究区地下水水质整体上优于地表水，但利用矿区水源作为饮用水时应注意进行适当处理。

关键词: 水文地球化学, 水质评价, 地表水, 地下水, 神东矿区

Abstract: The industrial and mining activities have an import impact on regional water environment and water security. It is of great significance for maintain the development of regional ecosystem and human development to deepen the research on the chemical composition and influencing factors of surface water and groundwater in the mining areas. Taking the surface water and groundwater in the Shendong mining area as the research object, the Piper diagrams, Gibbs, Na-normalized molar ratios, WQI method, and TH-TDS method were used to analyze the differences and characteristics of chemical composition and controlling factors of surface water and groundwater in this area, and evaluated the suitability for drinking. The results show that both groundwater and groundwater in the Shendong mining area were weakly alkaline, and the pH value of surface water was larger than that of groundwater as a whole. The EC value of groundwater was higher than that of surface water. The TDS value of groundwater was obviously higher than that of surface water. The TH value of groundwater was larger than that of surface water and varied in a wider range. Secondly, the dominant anions of surface water and groundwater were HCO3- and Na+, and the water types m were Cl-SO4-Ca-Mg. The chemical composition of surface water and groundwater in the Shendong mining area was mainly related to the weathering of silicate rock and evaporative rock, while carbonate weathering also played a certain role. Meanwhile, some points fell outside the triangle, which may be influenced by other factors. Finally, the suitability evaluation of surface water and groundwater quality in the study area showed that the groundwater quality in the study area was better than that of surface water on the whole, but attention should be paid to proper treatment when using the mine water as drinking water. This study can not only provide scientific basis for the management of surface water and groundwater in the Shendong mining area, but also provide scientific reference for other similar areas.

中图分类号:

TD745

李果, 吕情绪, 许峰. 神东矿区地表水和地下水水化学特征及其影响因素研究[J]. 煤炭工程, 2022, 54(4): 145-150.

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