宁夏非饱和黄土浸水后变形特性研究  

Study on distortion characteristics of unsaturated loess in Ningxia when inudation

作　　者：邓洪亮[1] 尹金宽[1] 谢向文[1] 郭玉松[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100022

出　　处：《岩土力学》2005年第S2期98-102,共5页Rock and Soil Mechanics

基　　金：交通部西部交通科技项目(No.200131800022)

摘　　要：非饱和黄土广泛分布于我国西北地区,它具有湿陷性、承载力低等特殊的工程性质条件,常对工程造成严重的危害,因此成了大家十分关注的问题。分析了非饱和黄土的形成和发展过程、微观结构特征、矿物成份和化学成份特点,通过大量的土工试验对非饱和黄土浸水后的破坏变形特性进行研究,得到了黄土湿陷性与浸水时间、含水量、饱和度和压力之间的关系,为工程建设提供可靠的设计依据。The unsaturated loess exists widely in Northwest China.It has become an attention question because it has specialty engineering property such as the collapsibility and low bearing capacity and come into being strictness harm to engineering.The process of form and development,microstructure property,mineral and chemistry constitution of loess are analyzed in detail.At the same time,the relations of the collapsibility with inundation time,water content,saturation and pressure are obtained.It affords the foundation of engineering design and construction.

关 键 词：非饱和黄土 湿陷性 微观结构特征 

分 类 号：TU444[建筑科学—岩土工程]