防灾减灾工程学报2012，Vol.32Issue(5)：636-642,7.
考虑非饱和特性的黄土湿陷性与微观结构分析
Analysis of Collapsibility and Microstructure of Loess considering Unsaturated Characteristics
摘要
Abstract
This paper analyzes the microstructure of 16 groups of soil sample from three different sites. Pictures of microstructure were processed with imaging processing program to acquire the geometric characteristic parameter and fractal dimension of pores. The range of pores' fractal dimension is 1. 816 - 1. 936. The pore distribution function of unsaturated soil was established based on fractal geometry. The moisture distribution of loess under natural moisture was analyzed. The relationships of collapsibility coefficient with fractal dimension and porosity of unsaturated pores were analyzed with the method of regression analysis. A larger fractal dimension represents a more complex pore-structure. The collapsibility coefficient of loess increases with the increase of fractal dimension and porosity of unsaturated pores. Unsaturated pore is the main cause to form collapsibility of loess.关键词
非饱和土/湿陷性黄土/微观结构/分形/实验研究Key words
unsaturated soil/ loess with collapsibility/ microstructure/ fractal/ experimental study分类
建筑与水利引用本文复制引用
马富丽,白晓红,王梅,杨晶,韩鹏举..考虑非饱和特性的黄土湿陷性与微观结构分析[J].防灾减灾工程学报,2012,32(5):636-642,7.基金项目
国家自然科学基金项目(51178287)、山西省自然科学基金项目(2010011029)、山西省回国留学人员科研项目(2011-026)资助 （51178287）
