谢臣臣,孙魁,吴亚坤,范靓慧,孙亚乔,富馨毅,马雄德

• 1:自然资源部矿山地质灾害成灾机理与防控重点实验室
• 2:长安大学水利与环境学院

摘要(Abstract)：

【目的】为探究神府矿区直罗组含水层地下水化学形成机制和控制因素，【方法】选取侏罗系直罗组风化基岩层和基岩层地下水为研究对象，综合运用Piper图、反距离权重法、Spearman相关性分析、离子比例关系和反向水文地球化学模拟等方法进行分析。【结果】结果表明：神府矿区直罗组地下水呈弱碱性，风化基岩含水层为低矿化度HCO_3型水，基岩含水层为高矿化度HCO_3型水。沿西北向东南方向，地下水由补给区流向排泄区，水化学类型复杂，演化规律为HCO_3型→HCO_3·SO_4型，局部出现SO_4型和Cl型。直罗组风化基岩层地下水主要水文地球化学作用为方解石、石膏、钾长石沉淀和白云石、岩盐和钠长石溶解，其次是Na-Ca阳离子交替吸附作用和黄铁矿氧化作用；基岩层地下水质形成主要受方解石、石膏、岩盐和钾长石沉淀与白云石和钠长石溶解等岩石风化作用控制，其次是Na-Ca阳离子交换、脱碳酸作用和混合作用。【结论】研究结果能够为区域地下水资源开发利用提供理论支持。

关键词(KeyWords)： 直罗组含水层;水化学特征;水文地球化学过程;神府矿区

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41877190);; 陕西省重点研发项目(2020ZDLSF06-04);陕西省重点研发项目(2021ZDLSF05-05)

作者(Author): 谢臣臣,孙魁,吴亚坤,范靓慧,孙亚乔,富馨毅,马雄德

DOI: 10.13928/j.cnki.wrahe.2023.01.014

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