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黄土湿陷起始压力判断探讨
引用本文:顾成权,孙艳.黄土湿陷起始压力判断探讨[J].水文地质工程地质,2004,31(2):1-3.
作者姓名:顾成权  孙艳
作者单位:中国地质大学工程学院,武汉,430074
摘    要:本文结合扫描电镜照片(SEM)分析黄土湿陷过程中各组成单元微观结构的变化,引入方向性孔隙度函数,得出黄土的湿陷变形过程就是土体孔隙结构系数Jf值由小到大、再变小的变化过程。提出用孔隙结构系数Jf的值代替规范中黄土湿陷起始压力的判断标准。

关 键 词:黄土湿陷性  微观结构  方向性孔隙度函数  孔隙结构系数
文章编号:1000-3665(2004)02-0001-03
修稿时间:2003年5月8日

A discussion of original pressure of loess collapsibility
GU Cheng-quan,SUN Yan.A discussion of original pressure of loess collapsibility[J].Hydrogeology and Engineering Geology,2004,31(2):1-3.
Authors:GU Cheng-quan  SUN Yan
Abstract:Loess collapsibility is the result of interaction of each composing cell in loess. The paper analyzed the microstructure's deformation during loess collapse with scanning pictures (SEM). The function of direction porosity was introduced to come to the conclusion: the value (J_f) of void fabric tensor of loess varies from small to big then to small during the process of loess's collapse and deformation. Finally, a method is put forward, the value of void fabric tensor (J_f) can be used to replace the judging standard of the beginning stress of loess collapsibility in regulations.
Keywords:loess collapsibility  microstructure  the function of direction porosity  void fabric tensor
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