截渗工程条件下滨海地下水源地地下水补给源解析  

Groundwater Recharge Sources Analysis of Coastal Groundwater Source Field Under the Condition of Subsurface Physical Barriers Engineering

作　　者：黄俞铭 阎妮 郑西来[1,2,3] 刘贯群 Huang Yuming;Yan Ni;Zheng Xilai;Liu Guanqun(College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China;Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao 266100, China;The Key Laboratory of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China)

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266100 [2]中国海洋大学山东省海洋环境地质工程重点实验室,山东青岛266100 [3]中国海洋大学海洋环境与生态教育部重点实验室,山东青岛266100

出　　处：《中国海洋大学学报（自然科学版）》2022年第6期126-133,共8页Periodical of Ocean University of China

基　　金：国家基金委-山东省联合基金重点项目(U1806210);国家自然科学基金项目(41907161)资助。

摘　　要：在研究区水文地质调查和地下水水质系统监测的基础上,本研究采用水化学方法(离子比值法、吉布斯图解法和Piper图解法)和端元混合分析-混合计算耦合数学模型,识别研究区地下水的来源,定量计算不同来源的贡献率。研究结果表明:(1)影响研究区地下水的水化学成分的主要过程包括海水入侵、矿物溶解-沉淀和阳离子交换;(2)在将研究区分为滨海区与农业活动区的基础上,识别出三个补给来源:截渗墙下游的地下咸水、大气降水和灌溉的地表水,三个补给源对滨海区地下水的平均混合比分别为34.03%、29.70%和36.27%,对农业活动区地下水的平均混合比分别为6.69%、49.03%和44.28%;(3)对于整个研究区,三个补给来源的平均混合比分别为10.22%、38.60%和51.17%。The groundwater source field of Huangshui River is an important source of fresh water along the Huangshui River.However,seawater intrusion and agricultural pollution pose a potential threat to groundwater quality.Therefore,it is necessary to analyze the groundwater sources and provide scientific basis for groundwater pollution control.Hydrogeological survey and the systematic monitoring of groundwater samples were conducted in the study area.Hydrochemical method(ion ratio,Gibbs maps,and Piper diagram)and the coupling mathematical model of End-members Mixing Analysis and MIX calculations were used to identify the sources of groundwater in the study area,along with quantitative calculation of the mixing ratio of different sources.The results show that(1)The main processes that affect the hydrochemical composition of groundwater in the study area include seawater intrusion,solution-precipitation,and cation exchange;(2)The study area could be divided into coastal area and agricultural activity area,and three recharge sources were identified salt groundwater from downstream,atmospheric precipitation,and surface water of irrigation.The average mixing ratios of the three recharge sources to coastal area groundwater were 34.03%,29.70%,and 36.27%,respectively,whereas to the agricultural activity area groundwater were 6.69%,49.03%,and 44.28%respectively;(3)For the entire study area,the average mixing ratios of the three sources were 10.22%,38.60%,and 51.17%,respectively.

关 键 词：海水入侵 截渗墙 混合比 端元混合分析 混合计算 

分 类 号：X523[环境科学与工程—环境工程]