地下水电导率预测溶解性总固体的可行性研究  

Feasibility Study on Prediction of Total Dissolved Solids(TDS) by Groundwater Conductivity

作　　者：张洁[1] 杨庆[1] 潘璇 肖寒[1] 徐庆勇[1] 刘辛初 ZHANG Jie;YANG Qing;PAN Xuan;XIAO Han;XU Qingyong;LIU Xinchu(Beijing Hydrogeology and Engineering Geology Team,Beijing 100195)

机构地区：[1]北京市水文地质工程地质大队,北京100195

出　　处：《城市地质》2018年第1期87-92,共6页Urban Geology

基　　金：国家科技重大专项“海河流域水资源调蓄区水质保障及生态修复关键技术研究与示范”(2014ZX07203-010);北京市平原区地下水环境监测网年运行项目(PXM2016_158305_000007)资助

摘　　要：通过对北京市平原区监测数据分析显示,电导率和溶解性总固体之间相关系数R2大于0.9,具有较好的相关性,可以通过建立二者之间的线性回归方程对溶解性总固体值进行预测,精度较高。第四系松散孔隙水系统的6个子系统内数据的单独分析显示,对于不同的地下水系统二者之间的相关性不同,预测的精度也不同。用各子系统内数据单独建立的线性回归方程预测出的值相对误差更低。并且当地下水埋藏类型不同时,其相关性也不同,承压水预测的数据更准确。该方法对地下水水质监测工作者,提供一种在野外快速获取可信度较高的溶解性总固体的方法,达到监测出溶解性总固体数据异常点和超标点的快速反应,有针对性的调查,为地下水溶解性总固体质量评价增加准确性。We conclude that the correlation coefficient(R2)between electric conductivity and the total dissolved solids(TDS)is greater than 0.9(good correlation)in Beijing plain.The conductivity can be directly detected by field testing instrument,which is a simple and fast method.The TDS can be predicted with high precision by establishing a linear regression equation between these two factors.By analyzing the data from the 6 subsystems of Quaternary loose pore water system in Beijing plain,different groundwater systems display different correlation and prediction accuracy.The TDS predicted by the linear regression equation,which was established on the basis of the data from each subsystem,with a lower relative error.When the groundwater burial type is different,the correlation will be different as well,and the prediction data of confined groundwater is more accurate.This method provides a rapid method for obtaining high reliability in the field of TDS to monitor groundwater quality,rapid response to abnormal TDS and exceed the standard data points,targeted surveys,increase the accuracy of groundwater quality evaluation of total dissolved solids.

关 键 词：溶解性总固体 电导率 地下水系统 地下水埋藏类型 相关性 

分 类 号：P641[天文地球—地质矿产勘探]