重金属污染场地电阻率法探测数值模拟及应用研究  

Numerical Simulation and Application of Electrical Resistivity Survey in Heavy Metal Contaminated Sites

作　　者：王玉玲[1,2,3] 能昌信[2] 王彦文[3] 董路[2] 

机构地区：[1]山东工商学院计算机科学与技术学院,烟台264005 [2]中国环境科学研究院固体废物污染控制技术研究所,北京100012 [3]中国矿业大学(北京)机电与信息工程学院,北京100083

出　　处：《环境科学》2013年第5期1908-1914,共7页Environmental Science

基　　金：环境保护公益性行业科研专项(201209022);山东省住房和城乡建设厅建设科技计划项目(2011YK056);山东省软科学项目(2012RKB01220);山东工商学院青年科研基金项目(2011QN084)

摘　　要：为了分析重金属污染场地的电阻率法探测效果,建立典型污染场地的电阻率模型,采用有限元法对电阻率法探测进行数值模拟,分析电阻率法探测的典型装置———温纳装置对于不同污染程度和污染区域的探测效果.模拟结果表明,电法装置的探测效果受到污染程度和污染区域埋深的影响,污染程度越严重,探测得到的低阻异常越明显,污染区域越容易识别;反之,污染程度较轻时(污染土壤与背景土壤电阻率比值大于60%),温纳装置探测无法得到明显的低阻异常,不利于污染区域判断;污染区域越靠近地表,则越容易被检测出,污染区域埋深较深时,视电阻率断面图异常不明显,不易污染区域判断.实际场地电阻率法探测结果也表明,电阻率法能够正确检测出污染相对严重的区域.In order to analyze the effects of electrical resistivity in heavy metal contaminated sites,we established the resistivity model of typical contaminated sites and simulate the DC resistivity method with Wenner arrays using the finite element method.The simulation results showed that the electrical method was influenced by the contamination concentration and the location of pollution.The more serious the degree of pollution was,the more obvious the low resistivity anomaly,thus the easier the identification of the contaminated area;otherwise,if there was light pollution,Wenner array could not get obvious low resistivity anomalies,so it would be hard to judge the contaminated area.Our simulation results also showed that the closer the contaminated areas were to the surface,the more easily the pollution was detected and the low resistivity anomalies shown in the apparent resistivity diagram were influenced by the Layered medium.The actual field survey results using resistivity method also show that the resistivity method can correctly detect the area with serious pollution.

关 键 词：电阻率法 温纳装置 重金属污染场地 数值模拟 有限元法 

分 类 号：X53[环境科学与工程—环境工程]