柴油污染土电阻率与热阻率的相关关系

发布时间：2018-02-02 04:12

本文关键词： 柴油污染土电阻率热阻率相关关系　出处：《东南大学学报(自然科学版)》2016年S1期 　论文类型：期刊论文

【摘要】：电阻率与热阻率是土体的基本参数,分别采用四电极方法和非稳态探针方法对不同状态下试样的电阻率与热阻率进行了测试,并对相同状态下2者之间的相关关系进行研究.结果表明,在相同含水率时,不同含油率污染试样的电阻率、热阻率与水饱和度之间具有相似的相关关系,随着水饱和度的增大,电阻率、热阻率均呈幂函数关系减小.以未污染土体的电阻率、热阻率和水饱和度为基数,污染土体的电阻率与水饱和度、热阻率与水饱和度之间均可建立线性相关关系.同时,分析了未污染土体的电阻率与热阻率之间的相关关系,2者之间的相关系数可由与颗粒含量有关的参数F来线性表示.
[Abstract]:Resistivity and thermal resistance are the basic parameters of soil. The resistivity and thermal resistance of samples in different states were measured by four-electrode method and unsteady probe method respectively. The results show that there is a similar correlation between resistivity, thermal resistance and water saturation of the samples contaminated with different oil content at the same water content. With the increase of water saturation, the resistivity and thermal resistance of polluted soil decrease with the increase of water saturation. The resistivity and water saturation of contaminated soil are based on the resistivity, thermal resistance and water saturation of uncontaminated soil. The linear relationship between thermal resistance and water saturation can be established. At the same time, the correlation between resistivity and thermal resistance of uncontaminated soil is analyzed. The correlation coefficient can be expressed linearly by the parameter F related to particle content.
【作者单位】：东南大学岩土工程研究所;东南大学江苏省城市地下工程与环境安全重点实验室;
【基金】：国家自然科学基金重点资助项目(41330641);国家自然科学基金资助项目(51578146) 江苏省2015年度普通高校研究生创新计划资助项目(KYLX15_0140)
【分类号】：TU43;X53
【正文快照】： 电阻率是岩土体的基本物理指标之一,是表征岩土体电学特性的基本参数,是指电流通过单位长度的立方土体时所具有的电阻大小,单位为Ω·m.电阻率受多种因素的影响,如土体孔隙液、孔隙率、饱和度、温度等[1].可根据电阻率的大小来分析土体含水率、压实度、黏粒含量等参数,还可用

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