[1]李亮,邢怀学,龚建师,等.太湖流域北部地下水化学特征及成因分析[J].华东地质,2022,43(02):217-226.[doi:10.16788/j.hddz.32-1865/P.2022.02.009]
 LI Liang,XING Huaixue,GONG Jianshi,et al.Hydrochemical characteristics and formation mechanism of groundwater in northern Taihu Lake Basin[J].East China Geology,2022,43(02):217-226.[doi:10.16788/j.hddz.32-1865/P.2022.02.009]
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太湖流域北部地下水化学特征及成因分析()
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《华东地质》[ISSN:2096-1871/CN:32-1865/P]

卷:
43
期数:
2022年02期
页码:
217-226
栏目:
环境地质
出版日期:
2022-06-23

文章信息/Info

Title:
Hydrochemical characteristics and formation mechanism of groundwater in northern Taihu Lake Basin
作者:
李亮1 邢怀学1 龚建师1 王赫生1 周锴锷1 朱应新1 邓婷婷2
1. 中国地质调查局南京地质调查中心, 江苏南京 210016;
2. 江苏省有色金属华东地质勘查局, 江苏南京 210007
Author(s):
LI Liang1 XING Huaixue1 GONG Jianshi1 WANG Hesheng1 ZHOU Kaie1 ZHU Yingxin1 DENG Tingting2
1. Nanjing Center, China Geological Survey, Nanjing 210016, Jiangsu, China;
2. Jiangsu Non-ferrous Metals East China Geological Exploration Bureau, Nanjing, 210007, Jiangsu, China
关键词:
水化学特征形成机理地下水太湖流域
Keywords:
hydrochemical characteristicsformation mechanismgroundwaterTaihu Lake Basin
分类号:
P641.3
DOI:
10.16788/j.hddz.32-1865/P.2022.02.009
摘要:
为研究太湖流域北部地下水的化学特征及成因,以水文地质研究为基础,综合利用数理统计、Piper三线图和离子比等方法,对不同含水层地下水的化学特征和控制因素进行分析。结果表明:研究区潜水的水化学类型较多,总体以Ca·Na-HCO3型和Ca·Na-HCO3·SO4型为主;承压水的水化学类型较简单,阴离子以HCO3型为主,阳离子以Ca、Ca·Na、Na为主;地下水主要受矿物风化-溶滤作用影响,其中含钠硅酸盐岩溶解对地下水化学特征影响较大;潜水受人类活动影响,工矿活动的影响大于农业、生活污水的影响;承压水中发生了阳离子交换,使Ca2+和Mg2+浓度降低而Na+浓度增高;潜水与承压水的离子特征在垂向上具有明显的分层性。
Abstract:
In order to find out the hydrochemical characteristics and genetic mechanism of groundwater in northern Taihu Lake Basin, based on hydrogeological conditions, the groundwater chemical characteristics and the distribution of controlling factors in different aquifers are analyzed by using mathematical statistics, Piper three-line diagram and ion ratio method. The results are as follows:Firstly, the hydrochemical types of shallow groundwater in the study area are complex with the main cations including Ca·Na-HCO3 and Ca·Na-HCO3·SO4. On the contrary, the hydrochemical types of confined water are relatively simple with HCO3 as the main anion and Ca, Ca·Na and Na as the main cation. Secondly, hydrochemical formation of shallow groundwater is mainly affected by the weathering and dissolution of minerals, among which the dissolution of silicate rock plays a great role. With respect to the impact on phreatic water from human activities, the influence from industrial and mining activities is much greater than that from agriculture and domestic sewage. Cationic exchange occurred in the confined water, which reduced the concentrations of Ca2+ and Mg2+ and increased the concentration of Na +. Thirdly, the ion characteristics of phreatic water and confined water have obvious stratification in vertical direction.

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备注/Memo

备注/Memo:
收稿日期:2021-01-11;改回日期:2021-07-12。
基金项目:中国地质调查局"苏南现代化建设示范区1:5万环境地质调查(编号:DD20160245)"、"杭州多要素城市地质调查(编号:DD20190281)"、"沙颍河-涡河流域水文地质调查(编号:DD20190354)"项目联合资助。
作者简介:李亮,1985年生,男,工程师,硕士,主要从事水文地质调查研究工作。Email:280283941@qq.com。
更新日期/Last Update: 1900-01-01