多相土石复合介质电阻率特性的试验研究  

Experiment on Electrical Resistivity Properties of Polyphase Soil-stone Mediums

作　　者：赵明阶[1] 李庚[1] 黄卫东 李健 

机构地区：[1]重庆交通大学河海学院,重庆400074 [2]重庆市公路工程监理咨询有限责任公司,重庆400060

出　　处：《重庆交通大学学报（自然科学版）》2010年第6期928-933,共6页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家自然科学基金项目(50779081);重庆市科技攻关项目(CSTC2007AC6037)

摘　　要：在对大量多相土石复合介质试件的电阻率测试试验基础上,分析了土石复合介质土石比、压实特性、含水量等参数对电阻率的影响规律;基于试验数据的统计分析,给出了多相土石复合介质电阻率方程,该方程与Keller非饱和土电阻率方程具有完全相同的结构形式。研究表明:多相土石复合介质电阻率随含水量的增加呈幂函数衰减,随击实次数的增大而减小,随含石量的增大而增大;在相同条件下对电阻率的影响以含水量最为敏感、击实次数和含石量次之;在考虑含石量对土性参数、胶结系数以及饱和度指数的影响后,多相土石复合介质电阻率特性完全可以用Keller非饱和土电阻率方程来描述。Based on experimental test of electrical resistivity of polyphase soil-rock samples,the relationsip between electrical resistivity and physical parameters,such as soil-rock ratio and compaction properties and moisture content of polyphase soil-rock mediums,was analyzed.The electrical resistivity equation of polyphase soil-rock mediums was proposed and it was the same form as Keller equation on unsaturation soil electrical resistivity.The research results indicated that the electrical resistivity equation of polyphase soil-rock mediums could be analyzed by taking Keller equation after taking the influence of soil-rock ratio for soil indicators and cementation coefficients and saturation exponents into consideration.

关 键 词：多相介质 土石复合介质 电阻率 

分 类 号：TV148[水利工程—水力学及河流动力学]