Correction method of Archie resistivity model for methyl tert-butyl ether contaminated clay

QI Yan-min; WANG Miao; ZHANG Ding-wen; LIN Wen-li

doi:10.16285/j.rsm.2022.1055

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Correction method of Archie resistivity model for methyl tert-butyl ether contaminated clay

更新时间：2026-06-25

- Correction method of Archie resistivity model for methyl tert-butyl ether contaminated clay
- Vol. 44, Issue 6, Pages: 1719-1728(2023)
- 作者机构：
  
  1. 东南大学交通学院,江苏,南京,211189
  2. 中国路桥工程有限责任公司,北京,100010
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2022.1055
  CLC： X53;TU442
- Online First：14 June 2023，
  
  Published：2023
- 稿件说明：
移动端阅览
QI Yan-min, WANG Miao, ZHANG Ding-wen, et al. Correction method of Archie resistivity model for methyl tert-butyl ether contaminated clay[J]. 2023, 44(6): 1719-1728.
DOI：

QI Yan-min, WANG Miao, ZHANG Ding-wen, et al. Correction method of Archie resistivity model for methyl tert-butyl ether contaminated clay[J]. 2023, 44(6): 1719-1728. DOI： 10.16285/j.rsm.2022.1055.

摘要

通过引入污染物影响系数及修正孔隙率，提出了一种挥发性有机物污染黏土的Archie电阻率修正模型，并通过米勒土盒单元试验结果给出了模型中的4个参数（胶结指数、饱和度指数、污染物影响系数和孔隙微观分布不均匀性系数）的确定方法。结果表明，黏土的地层因子与孔隙率呈正相关关系，与砂土的相应关系相反，这是黏土颗粒表面电荷对电阻率的影响所致。饱和度指数随体积含湿率的增加呈抛物线变化，随孔隙率的增加呈线性增加，据此提出了同时考虑两种因素的饱和度指数经验公式。综合土体电阻率与体积含水率之间的幂函数关系及与体积含污率之间的线性关系，得到了污染物影响系数的确定方法。孔隙微观分布不均匀性系数a随体积含水率的变化可分为陡降、趋平和缓升3个阶段，土中孔隙水的赋存状态是主要影响因素。

Abstract

An Archie resistivity correction model for volatile organic compound (VOC) contaminated clay was proposed by introducing the contaminant influence coefficient and correcting the porosity. Determination method of the four parameters (cementation exponent

saturation exponent

contaminant influence coefficient and coefficient of uniformity for pore micro-distribution) in the model was proposed based on the results of the Miller soil box test. The test results show that the formation factor of clay is positively correlated with porosity

which is different from the sandy soils

due to the effect of surface charge of clay particles on resistivity. The saturation exponent varies parabolically with the increase of volumetric moisture content and it increases linearly with the increase of porosity

whereby an empirical formula of saturation exponent considering both factors is proposed. The power function relationship between soil resistivity and volumetric water content and the linear relationship between soil resistivity and volumetric contaminant content were integrated to obtain the determination method of contaminant influence coefficient. The variation of coefficient of uniformity for pore micro-distribution with volumetric water content can be divided into three stages: steeply falling stage

leveling stage and slowly rising stage

and the occurrence state of pore water in soil is the main factor affecting a.

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