摘要
四川成都市某平原区地下水资源丰富,以浅层地下水为研究对象,基于前人研究的基础及数据,运用数理统计、Durov图、Gibbs模型、离子比值分析等方法,研究了成都市某平原区浅层地下水化学特征,并判别了主要水文地球化学作用,分析了主要离子来源。结果表明:研究区浅层地下水中主要阴阳离子为HCO_(3)^(-)、Ca^(2+),水化学类型以HCO_(3)^(-)Ca型,HCO_(3)^(-)SO_(4)^(-)Ca型为主;地下水组分主要受到岩石风化作用的控制,蒸发浓缩作用也存在一定影响;地下水中Na^(+)、K^(+)主要源于岩盐的溶解,Ca^(2+)、Mg^(2+)离子主要源于碳酸盐和蒸发盐矿物的溶解,SO_(4)^(2-)主要源于石膏的溶解,同时,硅酸盐岩的溶解对地下水组分也有一定的贡献。
A plain area in Chengdu,Sichuan Province has abundant groundwater resources.Based on previous research and data,this study used mathematical statistics,Durov plots,Gibbs models,ion ratio analysis,and other methods to study the chemical characteristics of shallow groundwater in a plain area in Chengdu.The main hydrogeochemical processes were identified,and the main ion sources were analyzed.The results show that the main anions and cations in the shallow groundwater of the study area are HCO_(3)^(-)and Ca^(2+),and the hydrochemical types are mainly HCO_(3)Ca and HCO_(3)^(-)SO_(4)^(-)Ca;the composition of groundwater is mainly controlled by rock weathering,and evaporation and concentration also have certain effects;Na^(+)and K^(+)in groundwater mainly come from the dissolution of rock salt,Ca^(2+)and Mg^(2+)ions mainly come from the dissolution of carbonate and evaporite minerals,SO_(4)^(2-)mainly comes from the dissolution of gypsum,and the dissolution of silicate rocks also contributes to the composition of groundwater.
作者
任祺俊
胡健
雷大星
谢章平
熊志炫
Ren Qijun;Hu Jian;Lei Daxing;Xie Zhangping;and Xiong Zhixuan(School of Resources and Civil Engineering,Gannan Institute of Science and Technology,Ganzhou 341000,China;Ganzhou Urban Key Laboratory of Mine Geological Disaster Prevention and Control and Ecological Restoration,Gannan Institute of Science and Technology,Ganzhou 341000,China)
出处
《黑龙江水利科技》
2024年第4期1-5,共5页
Heilongjiang Hydraulic Science and Technology
