摘要
基于深圳市25个海水入侵监测孔2017-2022年的监测数据,选用氯离子(Cl^(-))浓度作为评价指标,分析了深圳市海水入侵的空间分布及变化趋势。研究结果显示,深圳市地下水层埋藏较浅,水位高程变化较为稳定,海水入侵主要分布在宝安沙井片区、南山中心区、盐田保税区及大鹏葵涌河口。研究结合了区域地质、岩土层类型、电阻率物探、降雨量变化和人类活动等要素,分析结果表明,开采地下水是造成海水入侵的重要因素,第四纪断裂是海水入侵的潜在通道,人工填土层区域容易受到海水入侵,降雨量对海水入侵影响的相关性较小。本研究可为深圳市海水入侵防灾减灾管理提供参考。
Based on the data of 25 monitoring wells on seawater intrusion in Shenzhen,from 2017 to 2022,and using Cl^(-)concentration as the evaluation index,the spatial distribution and variation trend of seawater intrusion in Shenzhen were analyzed.Results show that the buried groundwater layer in Shenzhen is relatively shallow,and the change of water level elevation was relatively stable.Seawater intrusion was detected mainly in the Shajing area of Bao’an,the central area of Nanshan,the Yantian Free Trade Zone,and the mouth of the Kwai Chung River in Dapeng.Meanwhile,the factors including regional geology,rock and soil types,resistivity geophysical prospecting,rainfall changes,and human activities were considered,and results show that the exploitation of groundwater is an important factor causing seawater intrusion.The Quaternary faults are potential channels for seawater intrusion.The land reclamation area is vulnerable to seawater intrusion.The correlation between rainfall and seawater intrusion is small.This study provided a reference for the disaster prevention of seawater intrusion in Shenzhen.
作者
陈北辰
李晴岚
王正阳
张洪岩
李文博
程靖清
王晓
CHEN Beichen;LI Qinglan;WANG Zhengyang;ZHANG Hongyan;LI Wenbo;CHENG Jingqing;WANG Xiao(Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China;Shenzhen Natural Resources and Real Estate Assessment and Development Research Center,Shenzhen 518040,China;College of Oceanography,China University of Geosciences(Wuhan),Wuhan 430074,China;Shenzhen Branch of CNOOC(China)Ltd.,Shenzhen 518054,China)
出处
《海洋地质前沿》
CSCD
北大核心
2024年第1期55-64,共10页
Marine Geology Frontiers
基金
深圳市基础研究面上项目“登陆粤港澳大湾区台风降雨时空分布特征及机理研究”(JCYJ20210324101006016)
深圳市国际合作研究项目“粤港澳湾区复杂地形条件下热带气旋近地面风场形成机制及预报研究”(GJHZ20210705141403010)。
关键词
海水入侵
地下水
氯离子浓度
降雨量
深圳市
seawater intrusion
groundwater
chloride concentration
rainfall
Shenzhen
