地学前缘 ›› 2025, Vol. 32 ›› Issue (2): 469-483.DOI: 10.13745/j.esf.sf.2023.12.30

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黄河三角洲地区地下水水质成因研究:以山东省东营市孤岛镇为例

王威1(), 程行2, 高旭波2,*(), 田振环1,*(), 刘春华3, 武占辉2, 李成城2, 孔淑琼2   

  1. 1.山东省第一地质矿产勘查院/富铁矿勘查开发技术山东省工程研究中心, 山东 济南 250109
    2.中国地质大学(武汉), 湖北 武汉 430074
    3.山东省地质调查院, 山东 济南 250013
  • 收稿日期:2023-10-12 修回日期:2023-12-05 出版日期:2025-03-25 发布日期:2025-03-25
  • 通信作者: *高旭波(1975—),男,研究员,博士生导师,主要从事岩溶及地下水水资源与水环境污染防治工作。E-mail: xubo.gao.cug@gmail.com;田振环(1983—),男,正高级工程师,主要从事海洋地质调查和海洋矿产勘查工作。E-mail: tt266003@163.com
  • 作者简介:王 威(1981—),男,博士,正高级工程师,主要从事水文地质环境地质调查评价工作。E-mail: www86_0@126.com
  • 基金资助:
    山东省第一地质矿产勘查院开放基金项目(2020DW02);国家自然科学基金项目(42172288);国家自然科学基金项目(41877204);国家自然科学基金项目(62171435)

The genesis of groundwater chemistry in Yellow River Delta: A case study of Gudao Town, Dongying City, Shandong Province

WANG Wei1(), CHENG Xing2, GAO Xubo2,*(), TIAN Zhenhuan1,*(), LIU Chunhua3, WU Zhanhui2, LI Chengcheng2, KONG Shuqiong2   

  1. 1. No.1 Institute of Geology and Mineral Resources of Shandong Province/Shandong Engineering Research Center for Iron-rich Ore Exploration and Exploitation Technology, Jinan 250109, China
    2. China University of Geosciences (Wuhan), Wuhan 430074, China
    3. Shandong Regional Geological Survey, Jinan 250013, China
  • Received:2023-10-12 Revised:2023-12-05 Online:2025-03-25 Published:2025-03-25

摘要:

黄河三角洲是我国重要的战略经济区。查明区域地下水水质特征和成因机制对于科学利用地下水资源、保护三角洲生态环境健康具有重要意义。论文以黄河三角洲地区山东省东营市孤岛镇为工作区,通过野外水文地质调查、水文地球化学监测和室内分析测试,系统地揭示了研究区地下水水质和成因机制。研究表明:(1)黄河水、海水、地表水、微咸地下水和地下咸水与卤水的主要水化学类型分别为HCO3·SO4-Na·Ca、Cl-Na、Cl-Na、Cl·HCO3-Na和Cl-Na型;(2)地表水和微咸水靠近硅酸盐端员,微咸水形成过程中主要发生了阳离子交换和硅酸盐岩溶解作用,同时受白云石和石膏溶解作用的影响,硅酸盐溶蚀起主导作用;(3)咸水主要受硅酸盐岩和蒸发岩溶蚀作用控制,卤水则主要受蒸发岩溶解作用影响,盐分来源均与海水入侵有关;(4)地下水中Cl-的浓度分布大体趋势为从沿海区域向内陆逐渐降低,F-的浓度分布大体趋势为从入海口位置往内陆延伸逐渐降低,Na+、Mg2+、Ca2+和SO42-的离子浓度分布与TDS浓度(溶解性固体总量)的分布规律整体一致,上述离子组分主要来源于古海水和现代海水入侵作用,而NH4+浓度的分布规律呈现相反的趋势,浓度变化主要受强烈人类活动影响。

关键词: 黄河三角洲, 地下水水化学, 水污染, 水文地球化学过程

Abstract:

The Yellow River Delta is a key strategic economic zone in China, making it crucial to understand the characteristics and genetic mechanisms of groundwater quality for the sustainable utilization of groundwater resources and the protection of ecological and environmental health. Focusing on Gudao Town in the Yellow River Delta, this study systematically investigates groundwater quality and its formation mechanisms through field hydrogeological surveys, hydrogeochemical monitoring, and laboratory analysis. The findings are as follows: (1)The main hydrochemical types of different waters in the study area are HCO3·SO4-Na·Ca (Yellow River water), Cl-Na (seawater), Cl-Na (surface water), Cl·HCO3-Na (brackish groundwater), and Cl-Na (underground brackish water and brine).(2)Surface water and brackish groundwater are closely associated with silicate end members. The formation of brackish water is primarily influenced by cation exchange and the dissolution of silicate rocks, with dolomite and gypsum dissolution playing a dominant role. (3) Brackish water is mainly controlled by the dissolution of silicate and evaporite rocks, with its salinity primarily attributed to seawater intrusion. (4) The Cl- concentration in groundwater decreases progressively from the coastal area to the inland, while F concentration decreases from the estuary to the inland. The distribution patterns of Na+, Mg2+, Ca2+, and SO42- concentrations align with that of total dissolved solids (TDS), indicating that these elements are primarily derived from the intrusion of both ancient and modern seawater. Additionally, changes in NH4+ concentrations are largely influenced by human activities.

Key words: Yellow River Delta, groundwater chemistry, water pollution, hydrogeochemical processes

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