岩土工程学报2013，Vol.35Issue(8)：1470-1477,8.
江苏海相黏土电阻率与岩土特性参数间相关性研究
Relationship between electrical resistivity and geotechnical characteristic parameters for Jiangsu marine clay
摘要
Abstract
The resistivity of soil is a basic parameter to describe its electrical conductivity and one of the inherent physical properties of soil.The resistivity piezocone penetration test is a new kind of in-situ testing technique,which can measure the resistivity of the soil.The marine clay in Jiangsu province of China and the measuring equipments and the operation principles of the resistivity piezocone penetration test are introduced.Based on the measurements of soil resistivity and the laboratory test results,the relationship among the resistivity of marine clay,basic soil index and mechanical properties is analyzed.It is concluded that the salt content of pore fluid,clay content and plasticity index are the main controlling factors of the soil resistivity.The resistivity decreases with the increase of the salt content of pore fluid and the clay content,and there is a good exponential decay relationship between the resistivity and the two indexes.When the salt content of pore fluid is greater than 6 g/L or the clay content greater than 60％,the value of resistivity tends to be a constant.The resistivity decreases with the increase of the plasticity index of soil with different plastic degrees.Although other characteristic indexes have a certain influence on the resistivity,the correlations between the resistivity and those indexes are not significant.关键词
海相黏土/电阻率/孔压静力触探/岩土特性Key words
marine clay/ resistivity/ piezocone penetration test/ geotechnical characteristic分类
建筑与水利引用本文复制引用
蔡国军,张涛,刘松玉,邓永锋,邹海峰..江苏海相黏土电阻率与岩土特性参数间相关性研究[J].岩土工程学报,2013,35(8):1470-1477,8.基金项目
国家自然科学基金项目(41202203) （41202203）
"十二五"科技支撑计划(2012BAJ01B02) （2012BAJ01B02）
江苏省自然科学基金重点项目(BK2010060) （BK2010060）
中央高校基本科研业务费资助项目(3221003202) （3221003202）
