东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (8): 1177-1182.DOI: 10.12068/j.issn.1005-3026.2017.08.024

• 资源与土木工程 • 上一篇    下一篇

柴油污染粉质黏土的电阻率特性及影响因素

边汉亮1,2， 刘松玉1,2， 蔡国军1,2， 储亚1,2   

  1. (1. 东南大学 岩土工程研究所， 江苏 南京210096; 2. 东南大学 江苏省城市地下工程与环境安全重点实验室， 江苏 南京210096)
  • 收稿日期:2016-01-20 修回日期:2016-01-20 出版日期:2017-08-15 发布日期:2017-08-12
  • 通讯作者: 边汉亮
  • 作者简介:边汉亮(1981-)，男，江苏徐州人，东南大学博士研究生； 刘松玉(1963-)，男，江苏靖江人，东南大学教授，博士生导师； 蔡国军(1977-)，男，山东兖州人，东南大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金重点资助项目(41330641)； “十二五”国家科技支撑计划项目(2012BAJ01B02).

Electrical Resistivity Characteristic and Influence Factors of Diesel Contaminated Silty Clay

BIAN Han-liang1,2， LIU Song-yu1,2， CAI Guo-jun1,2， CHU Ya1,2   

  1. 1. Institute of Geotechnical Engineering， Southeast University， Nanjing 210096， China; 2. Jiangsu Key Laboratory of Urban Underground Engineering & Environmental Safety， Southeast University， Nanjing 210096， China.
  • Received:2016-01-20 Revised:2016-01-20 Online:2017-08-15 Published:2017-08-12
  • Contact: LIU Song-yu
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摘要： 以南京地区典型的粉质黏土为研究对象，人工配制了不同含水率、不同含油率的柴油污染土，采用Miller Soil Box对不同状态的污染土体电阻率进行了测试，建立了土体电阻率与含水率、含油率和饱和度间的相关关系.结果显示，含油率相同时，电阻率随含水率、饱和度的增大呈幂函数关系减小;含水率相同时，电阻率随含油率的增大而线性增加.引入体积含湿率来分析油水共同作用对电阻率的影响，发现饱和度相同时，电阻率随体积含湿率的增加而线性增大.采用正交分析法对电阻率的三种影响因素进行主次分析，影响大小为饱和度>含水率>含油率.

关键词: 柴油污染土, 电阻率特性, 影响因素, 体积含湿率, 正交分析

Abstract: Silty clay from Nanjing city was used as parent soil for preparing diesel-contaminated soils with various moisture content and diesel content. The soil resistivity of diesel-contaminated soils was then determined by a Miller Soil Box to estimate the variation of the resistivity with moisture content， diesel content and saturation degree. Results indicate that soil resistivity increases with decreased moisture content and saturation degree for a given diesel content， which can be expressed using a series of power functions. The soil resistivity increases linearly with increased diesel content for a given moisture content. A new characteristic parameter， volume moisture content， is developed to better understand the influence of water- diesel interaction on the soil resistivity. It is found that the soil resistivity increases linearly with an increase in the volume moisture content for a given saturation. Orthogonal analysis was performed to rank the importance of influence factors on the soil resistivity， indicating the following order: degree of saturation > water content > oil content.

Key words: diesel contaminated soil, electrical resistivity characteristic, influence factor, volume moisture content, orthogonal analysis

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