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潍坊北部超采区地下水化学成分演变特征分析 预览 被引量:1

An Analysis of Hydro-chemical Ccharacteristics of Groundwater in Over-exploited Area of Northern Weifang
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摘要 以潍坊市北部超采区漏斗演变过程中浅层地下水水化学要素为依据,综合运用Radial plot图、Box-whisker图、Piper三线图解分析了超采区浅层地下水化学成分的演变情况,阐述了硬度、TDS的时空变化规律,揭示了近年来地下水超采影响下该区地下水水质变化规律。结果表明:①超采区水化学类型发生改变,2000年研究区浅层地下水水化学类型以Na^+-K^+-HCO3^-、Ca^2+-Mg^2+-HCO^-型为主,转变为以Na^+-K^+-HCO^--Cl^-和Ca^2+-Mg^2+-HCO^--Cl^-型为主;②地下水超采地下水改变了地下水的流场,增大了入渗补给,加剧水污染,导致总硬度和TDS浓度的增加;③从地下水化学成分的年际变化来看:Na^+、K^+、Cl^-、HCO^-含量变化与地下水位波动基本一致,离子浓度随地下水位的变化发生改变。Ca^2+、Mg^2+、SO4^2-的含量随着地下水位的降低而升高:地下水超采导致含钙镁矿物和石膏等矿物的溶解增多,入渗量增大,离子浓度升高。 The study analyzed the hydrochemical characteristics of groundwater in over-exploited area of northern Wei Fang and elaborated the temporal and spatial variation of hardness and TDS. Meanwhile, it revealed the law of groundwater quality under the influence of over-exploi- tation in recent years. It is based on the hydrochemistry elements of shallow groundwater in the over-exploited areas by the comprehensive use of radial plot, Box-whisker diagram and Piper diagram. The results showed that :①Hydrochemistry type in over-exploited area changed in the recent years. The chemical types of groundwater were mainly dominated by Na^+-K^+-HCO3^- and Ca^2+-Mg^2+-HCO3^- in 2000, and they were Na^+-K^+-HCO3^--Cl^- ,Ca^+2+-Mg^2+-HCO3^--Cl^- in 2012.②Exeessive exploitation of groundwater changed the flow field of groundwater, increased the infiltration recharge and pollution of water, which resulted in the increase of total hardness and TDS concentration. ③From the view of interannual variation of the groundwater chemical composition: The changes in content of Na^+ , K^+ , Cl^- and HCO3^- were the same as groundwater level, and the ionic concentration changed with the fluctuation of groundwater level. Ca^2+ , Mg^2+ and SO4^2- increased with decrea- sing groundwater level. Over-exploitation leads to increase dissolution of minerals containing calcium and magnesium and gypsum, thereby increasing the infiltration capacity and ion concentration.
作者 曹滨 唐培军 焦裕飞 郭亚萍 林洪孝 王刚 CAO Bin1, TANG Pei-jun2, JIAO Yu-fei1, GUO Ya-ping1, LIN Hong-xiao1, WANG Gang1 ( 1 .Water Conservancy and Civil Engineering College, Shandong Agricultural University, Taian 271018, Shandong Province, China; 2. Hydrographic Office in Wei Fang, Weifang 261031, Shandong Province, China)
出处 《中国农村水利水电》 北大核心 2017年第3期85-89,95共6页 China Rural Water and Hydropower
基金 国家自然科学基金资助项目(41202174) 高等学校博士学科点专项科研基金资助项目(20123702120020).
关键词 水化学特征 超采 地下水 hydrochemical characteristic over-exploitation groundwater
作者简介 曹滨(1992-),女,硕士研究生,主要从事水质方面的研究。E-mail:271902018@qq.com。 通讯作者:林洪孝(1959-),男,博士,教授,博士生导师,主要从事水资源开发利用与管理方面的研究。E-mail:linhx@sdau.edu.cn。
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