黄土湿陷机理研究现状及有关问题探讨  

DISCUSSION ON THE FURTHER RESEARCH IN LOESS HYDROCOMPACTION

作　　者：许领[1] 戴福初[1] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029

出　　处：《地质力学学报》2009年第1期88-94,104,共8页Journal of Geomechanics

摘　　要：黄土湿陷性问题由来已久。20世纪60-80年代,采用扫描电镜(SEM)和物化分析技术,黄土湿陷机理的结构理论获得了发展和完善,当时,由于不能提供定量的力学参数而很少应用于工程建设。随着土工试验技术的进步以及土力学理论的发展,克服传统的黄土湿陷机理研究方法的不足成为可能。本文首先论述了黄土湿陷性研究的力学属性;其次,提出了黄土的广义湿陷概念;最后,从非饱和土力学角度对黄土湿陷机理研究的有关问题进行了讨论和分析。Loess hydrocompaction has been discussed for a long time. During the 1960s- 1980s, with the application developed and of SEM and mineral analysis, the micro-structure improved, but it has rarely been used in engineering supply related force/stress parameters. Progress in soil to find a new way to study the loess hydrocompaction. hydrocompaction and proposes a concept of generalized some issues about study on hydrocompaction from the theory of loess hydrocompaction was numerical analysis because it failed to engineering and soil mechanics makes it possible This paper discusses mechanical attribute of loess loess hydrocompaction. An analysis is made on viewpoint of unsaturated soil mechanics, and finally a case study is given.

关 键 词：黄土湿陷机理 微观结构 广义湿陷性 非饱和土力学 

分 类 号：P534.63[天文地球—第四纪地质学]