赣州北部丘陵山区浅层地下水化学特征及成因分析

doi:10.19388/j.zgdzdc.2023.06.07

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摘要地下水是赣州北部丘陵地区居民首要的生活水源,开展区内浅层地下水水文地球化学特征及成因的研究具有重要的科学价值和指导意义。2018年,在研究区北部采集不同含水岩组地下水53组,覆盖面积约460 km²。利用统计分析、Piper图解、空间分析和离子比例等方法,探讨了区内水文地球化学特征及成因机制,结果显示: 浅层地下水的pH值在5.08~7.87之间,溶解性总固体(total dissolved solids,TDS)在16.5~375.7 mg/L之间,整体为弱酸性淡水; 浅层地下水中阳离子以Ca²⁺为主,阴离子以HCO₃^-为主; 化学类型以HCO₃^--Ca²⁺、HCO₃^--Ca²⁺·Mg²⁺型为主; 水岩溶解作用、阳离子交换作用和人类活动是影响区内浅层地下水化学特征的主要因素。研究成果可为本地区的地下水资源保护、管理及开发利用提供参考。

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	杨艳林
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	王晓晗

关键词 ：赣州北部丘陵山区, 浅层地下水, 水化学特征, 形成机制

Abstract：Groundwater is the principle life water source for residents in northern hilly region of Ganzhou, and it is of great scientific value to conduct the investigation of hydrochemical characteristics and formation mechanism of shallow groundwater in this area. Fifty three samples of groundwater in different water-bearing formation were collected in the northern area in 2018, covering areas of 460 km². Based on statistical analysis, Piper diagram, spatial analysis and ion ratio, the authors discussed hydrochemical characteristics and formation mechanism. The results show the pH of shallow groundwater is between 5.08 and 7.87 and TDS is between 16.5 mg/L and 375.7 mg/L, representing weakly acidic fresh water. The cations are mainly Ca²⁺, and the anions are mainly HCO₃^-. The chemical types of shallow groundwater are mainly HCO₃^--Ca²⁺ and HCO₃^--Ca²⁺·Mg²⁺, and the water-rock interaction, cation exchange and human activities are the main factors affecting the hydrochemical characteristics of shallow groundwater in this area. This research would provide some reference for groundwater protection, management and development.

Key words： northern hilly region of Ganzhou shallow groundwater hydrochemical characteristics formation mechanism

收稿日期: 2022-06-07

中图分类号:

P592

基金资助:中国地质调查局“武汉滨江城市地质安全调查评价(编号: DD20221743)”和“江西省赣县1∶5万清溪村幅水文地质调查(编号: DD20160248)”项目联合资助

作者简介: 杨艳林(1984—),男,高级工程师,主要从事水文地质调查方面的研究工作。Email: yangyanlin@mail.cgs.gov.cn。

引用本文:

杨艳林, 靖晶, 齐信, 邵长生, 王晓晗. 赣州北部丘陵山区浅层地下水化学特征及成因分析[J]. 中国地质调查, 2023, 10(6): 60-68.
YANG Yanlin, JING Jing, QI Xing, SHAO Changsheng, WANG Xiaohan. Hydrochemical characteristics and formation mechanism analysis of shallow groundwater in the northern hilly region of Ganzhou. , 2023, 10(6): 60-68.

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http://journal25.magtechjournal.com/Jwk_dzdc/CN/10.19388/j.zgdzdc.2023.06.07 或 http://journal25.magtechjournal.com/Jwk_dzdc/CN/Y2023/V10/I6/60

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