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.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
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)
关键词
多相介质
土石复合介质
电阻率
polyphase mediums
soil-rock mediums
electrical resistivity
