黄河下游菏泽市地下水化学特征及形成机制  

Study on Chemical Characteristics and Formation Mechanism of Groundwater in Heze City,Lower Reaches of Yellow River Basin

作　　者：孔凡飞 冯英明 臧浩 姚强 司臣 KONG Fanfei;FENG Yingming;ZANG Hao;YAO Qiang;SI Chen(The First Exploration Team of Shandong Coalfield Geologic Bureau,Qingdao 266500,China;Rizhao Marine Geology Academician Workstation,Rizhao 276800,China)

机构地区：[1]山东省煤田地质局第一勘探队,山东青岛266500 [2]日照海洋地质院士工作站,山东日照276800

出　　处：《环境科学与技术》2024年第S2期58-66,共9页Environmental Science & Technology

基　　金：山东省2022年部省协议地质勘查项目:黄河流域(菏泽-泰安段)生态地质调查评价项目(鲁勘字(2022)19号)

摘　　要：研究地下水的化学特征及形成机制对于地下水的长期可持续发展和用水居民健康具有重要意义。为深入了解黄河流域下游菏泽市地下水资源的特点和利用价值,为其可持续利用提供重要的科学依据,该研究采用描述性统计分析、离子分析、Piper三线图、Gibbs图解法及离子比值等方法,结合PHREEQC模拟计算矿物饱和指数,揭示不同深度地下水的化学类型以及受到蒸发浓缩、岩石风化溶滤和阳离子交替吸附作用的影响。结果表明,浅层地下水化学类型以HCO_(3)·SO_(4)·Cl-Na·Mg型、HCO_(3)·Cl-Na·Ca·Mg型和HCO_(3)-Na·Mg型为主,深层地下水则以HCO_(3)·SO_(4)-Na型为主。岩石风化溶滤作用主要来源于硅酸盐岩和蒸发岩矿物的溶解,其贡献率为66.29%,碳酸盐岩和其他岩石风化的贡献率约为12.81%。浅层地下水的阳离子交替吸附作用相对复杂。合理开发浅层地下水对生态环境的改善具有积极作用。Research on the chemical characteristics and formation mechanism of groundwater is of great significance for the long-term sustainable development of groundwater and the health of residents using water.In order to deeply understand the characteristics and utilization value of groundwater resources in Heze City in the lower reaches of the Yellow River Basin,and provide important scientific basis for its sustainable utilization,this study adopted descriptive statistical analysis,ion analysis,Piper trilinear diagram,Gibbs diagram,and ion ratio,combined with PHREEQC simulation to calculate the mineral saturation index,this study revealed the chemical types of groundwater at different depths and the influence of evaporation concentration,rock weathering leaching,and cation exchange adsorption.The results indicate that the chemical types of shallow groundwater are mainly HCO_(3)·SO_(4)·Cl-Na·Mg,HCO_(3)·Cl-Na·Ca·Mg,and HCO_(3)-Na·Mg,while deep groundwater is mainly HCO_(3)·SO_(4)-Na.The leaching of rock weathering is mainly derived from the dissolution of silicate rocks and evaporite minerals,contributing 66.29%,while the contribution of carbonate rocks and other rock weathering is approximately 12.81%.In addition,the cation exchange adsorption of shallow groundwater is relatively complex.The rational development of shallow groundwater plays a positive role in improving the ecological environment.The results of this study contribute to a deeper understanding of the characteristics and utilization value of groundwater resources in the region,providing important scientific basis for their sustainable utilization.

关 键 词：黄河流域 冲积平原 地下水 水化学特征 形成机制 

分 类 号：X523[环境科学与工程—环境工程] P641.12[天文地球—地质矿产勘探]