地质通报2026，Vol.45Issue(4)：634-646,13.DOI:10.12097/gbc.2024.10.045
京津以南平原区浅层地下水水化学类型、特征、形成机制及其开发利用潜力
Hydrochemical types,characteristics,formation mechanism and exploitation potential of shallow groundwater in the plain south of Beijing-Tianjin
摘要
Abstract
[Objective]This paper aims to conduct an in-depth study on the hydrochemical types,characteristics,formation mechanisms,and development and utilization potential of shallow groundwater in the plain area south of Beijing and Tianjin,so as to provide a theoretical basis for the management and protection of regional water resources.[Methods]Groundwater surveys,water sample collection and analysis were carried out in Shijiazhuang,Hengshui,Cangzhou and other areas of the Hebei Plain.Methods including Gibbs model simulation,hydrochemical analysis,major ion ratio analysis,and saturation index calculation using the PHREEQC software were comprehensively applied to analyze the hydrochemical characteristics,water-rock interaction mechanism and development and utilization potential of groundwater.[Results]The results show that along the groundwater flow direction,from the alluvial-proluvial zone,through the pre-fan depression zone,to the inter-river channel zone of the central plain,the total dissolved solids(TDS)and concentrations of Na+,Ca2+,Mg2+,Cl-and SO42-increase gradually.The pH first increases and then decreases,while the contents of K+and HCO3-first decrease and then increase.The groundwater hydrochemical type evolves from HCO3-Ca type to Cl·SO4-Ca·Mg type and then to Cl·SO4-Na type.Hydrochemical components in the alluvial-proluvial zone are mainly controlled by carbonate dissolution;the pre-fan depression zone is jointly affected by water-rock interaction and evaporation-crystallization,dominated by silicate weathering;and the central inter-river zone is controlled mainly by halite dissolution and evaporation-crystallization.In terms of exploitation status,shallow groundwater in the freshwater zone is over-exploited,whereas the saline water zone has abundant natural water resources but limited available freshwater.[Conclusions]Shallow groundwater in the plain south of Beijing and Tianjin is affected by multiple factors during runoff.The upstream alluvial-proluvial zone is strongly influenced by human activities,and the impact of domestic sewage requires attention.Exploitation of shallow groundwater in the freshwater zone should be strictly controlled.Comprehensive utilization of brackish water(2～3 g/L)can be strengthened in the saline water zone.关键词
浅层地下水/水化学特征/离子质量浓度/水岩作用/开发利用潜力/京津以南平原区Key words
shallow groundwater/hydrochemical characteristics/ion mass concentration/water-rock interaction/exploitation potential/plain south of Beijing-Tianjin分类
天文与地球科学引用本文复制引用
朱琴,杨志光,田晓华,赵凯..京津以南平原区浅层地下水水化学类型、特征、形成机制及其开发利用潜力[J].地质通报,2026,45(4):634-646,13.基金项目
国家重点研发计划课题《雄安新区地下水环境风险预测预警与防控》(编号:2016YFC0401404)、河北省自然资源厅项目《河北省全民所有自然资源资产所有权委托代理机制试点(地下水资源)》(编号:13000022P00EEC4101484)、自然资源部部省合作项目《典型区水平衡健康诊断与量水发展研究》(编号:2024ZRBSHZ026)和《地下水位降落漏斗成因及关键控制因子研究》(编号:13000022P00329410101J) Supported by National Key Research and Development Program of China(No.2016YFC0401404),Ministry of Natural Resources Provincial Cooperation Project(No.2024ZRBSHZ026),and Projects of Hebei Provincial Department of Natural Resources(Nos.13000022P00EEC4101484,13000022P00329410101J) （编号:2016YFC0401404）
