华北某市中心城区2018~2022年地下潜水水质及腐蚀性变化趋势分析  

Change Trend of Phreatic Groundwater Quality and Corrosiveness in a City in North China from 2018 to 2022

作　　者：叶竞雄 刘承磊 Ye Jingxiong;Liu Chenglei(Tianjin Survey Design Institute of Group Co.,Ltd.)

机构地区：[1]天津市勘察设计院集团有限公司,天津市300191

出　　处：《勘察科学技术》2024年第2期36-40,共5页Site Investigation Science and Technology

摘　　要：该文结合华北某市地下潜水观测项目2018年至2022年水质试验分析结果,对该市地下潜水的pH值、氯化物、硫酸盐、总硬度、Zn、Cu等离子进行统计分析。结果表明,中心城区地下潜水受有机物污染程度逐年严重;按照水质等级评定,主要分为较差(Ⅲ类)和极差(Ⅴ类)两个等级,其中极差(Ⅴ类)达到了近76%。中心城区地下潜水在无干湿交替环境下,对混凝土结构以弱腐蚀和微腐蚀为主,干湿交替环境下以中等腐蚀和弱腐蚀性为主,强腐蚀均没有分布;干湿交替环境下对混凝土中的钢筋以中等腐蚀和弱腐蚀为主,长期浸水条件下全部表现为微腐蚀,弱腐蚀、中等腐蚀及强腐蚀均没有出现。该文绘制了2022年度中心城区地下潜水水质腐蚀性分区范围,可为该市工程建设中防腐设计提供参考。In this paper,based on the analysis results of water quality test of an Phreatic Groundwater Observation Project in a city in North China from 2018 to 2022,a statistical analysis of PH value,chloride,sulfate,total hardness,Zn,Cu plasma is conducted.The results show that the pollution degree of phreatic groundwater in the central city is deteriorating year by year.According to the water quality grade evaluation,it is mainly devided into two main grades:poor(Class Ⅲ)and extremely poor(Class Ⅴ),among which extremely poor(Class Ⅴ)reached nearly 76%.Phreatic groundwater in the central city causes weak corrosion and micro-corrosion on concrete structure in the absence of dry-wet alternate environment.It causes medium corrosion and weak corrosion in the dry-wet alternate environment,and strong corrosion is not distributed.The steel bars in the concrete are mainly subject to medium corrosion and weak corrosion in the dry-wet alternate environment.Under long-term immersion conditions,none of micro corrosion,weak corrosion,medium corrosion and strong corrosion appears.This paper draws the corrosion zoning range of phreatic groundwater quality in the central urban area in 2022,which can provide a reference for anti-corrosion design in engineering construction in the city.

关 键 词：地下潜水 简分析 全分析 总硬度 腐蚀性 

分 类 号：X52[环境科学与工程—环境工程]