基于半空间模型和弥散试验的场地地下水污染物自动溯源算法研究  

Research on the automatic tracing algorithm of groundwater pollutants based on half space model and dispersion test

作　　者：王蕾 张芳 王成锋 徐振飞 WANG Lei;ZHANG Fang;WANG Chengfeng;XU Zhenfei(Sichuan Institute of Geological Engineering Investigation Group Co.,Ltd.,Chengdu 610000,Sichuan,China)

机构地区：[1]四川省地质工程勘察院集团有限公司,四川成都610000

出　　处：《矿产勘查》2020年第12期2729-2734,共6页Mineral Exploration

基　　金：四川省科技厅计划项目(编号:2020YFS0452)资助。

摘　　要：选用的研究场地为具有地下水污染风险、布设有大量监测孔的孔隙型场地,利用弥散试验得出相关参数,进而计算出污染物运移的最大位移和最小位移。引入半空间模型,分别以污染监测孔和疑似泄露装置中心点为圆心,最大位移和最小位移为半径画圆,初步圈定污染源范围OA、OB。进一步利用等水位线作为分界线,OA范围内剔除下游部分、OB范围内剔除上游部分,运用专家经验模型和历史数据进行排除,剔除干扰项,缩小疑似污染源范围,最后将该算法发布为服务应用于地下水监测系统,达到溯源的目的。结果表明,基于半空间模型和弥散试验的场地地下水污染物自动溯源算法在目标区地下水污染源识别上具备较好的适用性,避免了现场人员溯源经验不一而产生误判。The selected research site is a porous site with groundwater pollution risk and a large number of monitoring boreholes.On this site,Using the relevant parameters through a dispersion test to calculate the maximum displacement and minimum displacement of pollutant transport.A half-space model is introduced to draw a circle with the center point of the pollution monitoring borehole and the suspected leaking device as the center,and the maximum displacement and minimum displacement as the radius,so as to define the pollution source range—OA and OB,preliminarily.Further,in order to narrow the scope of suspected sources of pollution,remo⁃ving the upstream portion of OA and the downstream portion of OB by the utilization of the equal water level line as a dividing line,and using the expert experience and historical data to eliminate interference term.Finally,the algorithm is published as a service and ap⁃plied to groundwater monitoring system to achieve the purpose of traceability.The results show that the automatic tracing algorithm of groundwater pollutants based on half space model and dispersion test in the target area has a good applicability for the identification of groundwater pollution sources.To a certain extent,it can avoid misjudgment caused by different professional experience of on-site per⁃sonnel and provide sufficient time by taking rational measures.

关 键 词：弥散试验 半空间模型 地下水 污染物溯源 

分 类 号：P641􀆰[天文地球—地质矿产勘探]