生活垃圾渗滤液污染砂土电阻率法量化检测研究  

Quantitative investigation of landfill-leachate contaminated sand soil with electrical resistivity method

作　　者：郭秀军[1] 吴水娟[1] 马媛媛[1] 

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266003

出　　处：《岩土工程学报》2012年第11期2066-2071,共6页Chinese Journal of Geotechnical Engineering

摘　　要：为分析电阻率法对生活垃圾渗滤液污染区边界和污染程度量化检测能力,在室内模拟渗滤液渗漏污染过程,分别利用二维、三维电阻率映像法和电极探杆法对污染过程进行检测。检测结果显示,土层被渗滤液污染后,在二维和三维视电祖率剖面图中均表现为低阻异常区。异常区边界和污染区边界具有对应关系,并随渗滤扩散范围和污染程度变化而改变。电极探杆法测量电阻率值和污染土中的渗滤液含量具有对应关系,基于建立的Archie型公式可反算求取土体中污染物含量,计算相对误差低于10%。基于电测结果的渗滤液含量求取过程需开展渗滤液稀释过程的电阻率测试试验和不同含水饱和度土样电阻率测试试验以确定相关参数。In order to analyze whether the landfill-leachate contaminated soil area and leachate content can be detected quantitatively with electrical resistivity method or not,the resistivity of saturated sand soils polluted by landfill-leachate in lab is measured with 2D or 3D resistivity tomography method and electrical probe.The measured results show that the contaminated area in soil layer has a low-resistivity abnormal character,the boundary of abnormal area in resistivity section corresponds to that of contaminated area,and it varies with landfill-leachate diffusing.The measured resistivity of contaminated sand soil with electrical probe has a quantitative relation with leachate content,and the leachate content can be calculated with the Archie type formula from the measured resistivity.A case study shows that the relative error of the calculated landfill leachate content to the true content is less than 10%.But two experiments are necessary in the process of calculating landfill leachate content with measured resistivity： one is the resistivity test experiment of landfill leachate while being diluted,the other is the resistivity test experiment of different saturated sand soil samples.

关 键 词：垃圾渗滤液 土壤污染 电阻率法 量化分析 

分 类 号：TU41[建筑科学—岩土工程]