原状膨胀土吸力特性的研究  

PROPERTIES OF SUCTION OF UNDISTURBED EXPANSIVE SOILS

作　　者：蒋刚 王钊 邱金营 

机构地区：[1]武汉水利电力大学水利学院,武汉430072

出　　处：《大坝观测与土工测试》2000年第1期36-38,共3页Dam Observation and Geotechnical Tests

基　　金：国家自然科学基金资助项目! (5 96 790 2 1 )

摘　　要：简要介绍了非饱和土的吸力概念 ,利用压力板吸力仪得出了南水北调工程中线原状膨胀土的水分特征曲线 ,通过回归分析得到其吸力方程 ,结合土样的物理性质进行了相关分析 。In this paper,the concept of suction of unsaturated soils and the pressure plate apparatus are described. Based on the research of engineering properties of expansive soils in the South North Water Transfer Project,three groups of undisturbed expansive soils are measured during drying with the pressure plate apparatus,their soil water characteristic curves and suction equations are obtained,and the effect of physical properties of expansive soils on soil water characteristic curves is analyzed.

关 键 词：膨胀土 吸力 水分特征曲线 压力板仪 测试技术 

分 类 号：TU443[建筑科学—岩土工程] TU411.2[建筑科学—土工工程]