土壤电阻率影响因素分析及NAPLs污染土壤电阻率特征初探

Analysisthe Influencing of Soil Resistivity and Preliminary Exploration on Resistivity Characteristics of NAPLs Polluted Soils

考虑影响土壤电阻率的因素很多,通过室内实验主要分析了土壤含水饱和度、土壤颗粒组成、NAPLs污染物种类以及含量等与土壤电阻率之间的相关关系以及变化趋势。实验结果表明:土壤电阻率随着含水饱和度的增加逐渐降低,粘粒含量越多电阻率越低,且随着NAPLs污染物含量增加土壤电阻呈指数形势上升。以期为今后利用电阻率法快速调查土壤污染问题提供参考与借鉴。

Soil resistivity is influenced by many factors.Through the indoor experiment,we mainly analyzed the respectivecorrelation and change trend between soil resistivity and water saturation,soil particle composition,NAPLs pollutanttypes and content.The results indicated that the soil resistivity gradually reduced with the increase of water saturation and the more content of clay.As NAPLs pollutants increased,the soil resistivity was in exponentially rising situation.This provided the reference for rapidly investigating the problem of soil pollution by resistivity methods.