采煤驱动下神东矿区地下水化学特征及成因

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摘要为查明神东矿区地下水化学特征,使用Piper三线图、Gibbs图、主成分分析法、改进内梅罗指数法等对23个地下水水样进行分析.结果表明,研究区地下水呈弱碱性,化学类型从上游HCO₃^--Na⁺为主导型,逐渐过渡为下游HCO₃^-·SO₄^2--Na⁺·Ca²⁺主导、Cl^--K⁺·Na⁺、F^--K⁺·Na⁺等多种类型共同存在.地下水化学类型主要受蒸发浓缩和岩石风化控制,HCO₃^-主要来源于碳酸盐的溶解,Ca²⁺、Mg²⁺主要来源于硫酸盐岩的溶解,Cl^-来源于岩盐的溶解和生活用水的污染,SO₄²来源于岩盐溶解,NO₃^-主要来源于生活用水和人畜排便.整体水质良好,个别地区存在一定程度的离子富集现象.研究成果可为当地水资源的高效利用,生态环境的保护与恢复提供理论支撑与参考.

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	侯泽明
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	刘志强
	张圣微

关键词 ：采煤驱动, 主成分分析, 水化学特征, 地下水类型, 离子富集

Abstract：In order to find out the hydrochemical characteristics and controlling factors of groundwater in Shendong mining area, 23groundwater samples were analyzed by Piper trigram, Gibbs graph, principal component analysis and improved Nemerow index method. The results showed that the groundwater was weakly alkaline, and its hydrochemical types gradually changed from HCO₃^--Na⁺ to HCO₃^-·SO₄^2- -Na⁺·Ca²⁺, Cl^--K⁺·Na⁺, and F^--K⁺·Na⁺ along with the river; the hydrochemical types were mainly affected by evaporation concentration and rock weathering; HCO₃^-, Ca²⁺and Mg²⁺, Cl⁻and SO₄²⁺came from the dissolution of carbonate, sulfate, and rock salt separately, and Cl⁻was affected the pollution of domestic water; NO₃^- mainly came from domestic water and defecation; overall,the groundwater quality was good, although there was a certain degree of ion enrichment in some regions. The research results could be taken as theoretical support and reference for exploitation and utilization of water resources and water environment protection in mining area.

Key words： coal mining driving principal component analysis hydrochemical characteristics groundwater type ion enrichment

收稿日期: 2021-10-21

PACS:

X131.2

基金资助:内蒙古自治区科技计划项目(2020GG0076);国家自然科学基金资助项目(51969023)

通讯作者: 黄磊,副教授,lei_huang@yeah.net E-mail: lei_huang@yeah.net

作者简介: 侯泽明(1997-)男,内蒙古自治区包头市人,内蒙古农业大学硕士研究生.主要从事水文地质与环境地质的学习与研究.发表论文3篇.

引用本文:

侯泽明, 黄磊, 韩萱, 许磊, 李钢柱, 刘志强, 张圣微. 采煤驱动下神东矿区地下水化学特征及成因[J]. 中国环境科学, 2022, 42(5): 2250-2259. HOU Ze-ming, HUANG Lei, HAN Xuan, XU Lei, LI Gang-zhu, LIU Zhi-qiang, ZHANG Sheng-wei. Hydrochemical characteristics and controlling factors of groundwater driven by coal mining in Shendong mining area. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(5): 2250-2259.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2022/V42/I5/2250

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