水盐含量及电阻率对盐渍土抗剪强度的影响
Effects of water salt content and resistivity on shear strength of saline soil
苏巍 1金刘彪 1刘鹏 1何迎祥1
作者信息
- 1. 吉林建筑大学 测绘与勘查工程学院,长春 130119
- 折叠
摘要
为了研究盐渍土的水盐含量及电阻率对其抗剪强度的影响,对长岭县的盐渍土进行室内试验,测量了不同深度土壤的含水率、含盐量、电阻率和抗剪强度,研究了电阻率和抗剪强度与含水率含盐量的关系.结果表明:盐渍土的电阻率随含盐量和含水率的增加而逐渐降低;经三轴剪切试验可得,内摩擦角和黏聚力均随含盐量的增加而减小,与含水率呈负相关;盐渍土的抗剪强度与电阻率之间具有良好的线性关系,抗剪强度随电阻率的增大而逐渐增大,构建盐渍土抗剪强度与电阻率之间的相关拟合公式,对实际工程应用有理论参考意义.
Abstract
This paper is aimed at an investigation of the effects of water and salt content and resistivi-ty on the shear strength of saline soil.The experiment conducts a laboratory tests on saline soil in Changling County by measuring the moisture content,salt content,resistivity and shear strength of the soil at different depth to study the relationship among these factors.The results show that the resistivity of saline soil gradually decreases with the increase of salt and moisture content.The triaxial shear test shows that the internal friction angle and cohesion decrease with the increase of salt content,which is negatively correlated with the moisture content.The good linear relationship exists between the shear strength and resistivity of saline soil,and the shear strength increases gradually with the increase of resistivity.This fitting formular built up on the shear strength of saline soil and resistivity could provide a reference for practical engineering application.
关键词
盐渍土/电阻率/抗剪强度/含盐量/含水率Key words
saline soil/electrical resistivity/shear strength/salt content/water content引用本文复制引用
基金项目
吉林省教育厅"十三五"科学技术项目(JJKH20180611KJ)
出版年
2024
国家科技期刊平台
NSTL
万方数据