岩土工程学报2013，Vol.35Issue(6)：1069-1075,7.
基于裂隙描述的膨胀土堑坡稳定性分析
Stability analysis of cut slope of expansive soil based on fissure description
摘要
Abstract
For the white strong expansive soil in Guangxi Zhuang Autonomous Region of China,by using the MATLAB software programming for binary processing of soil fissure images,a linear regression relationship between fissure ratio and water content is obtained.Field test observations show that the long-term average width of fissure is about 0.005 m before the rainy season.The correlation of the water content of surface soil and fracture spacing is obtained by means of the equivalent model.Using different fracture spacings,the fracture distribution is represented according to rainfall infiltration model in fracture seepage.Based on the description of fissures,it is shown that the calculated results of stability of cut slope with infiltration are deeply influenced by fissures.The safety factor of the slope decreases greatly with sustained rainfall when the fissure ratio is high,and it also greatly decreases with the development of the atmospheric drastic influence depth.According to the research results,some specific proposals are put forward for the cut slope of expansive soil.关键词
膨胀土/堑坡/裂隙/大气作用/稳定性分析Key words
expansive soil/ cut slope/ fissure/ atmosphere action/ stability analysis分类
建筑与水利引用本文复制引用
李雄威,代国忠,于常瑶,王继果..基于裂隙描述的膨胀土堑坡稳定性分析[J].岩土工程学报,2013,35(6):1069-1075,7.基金项目
国家自然科学基金项目(41102229) （41102229）
住房和城乡建设部科学技术项目(2012-k3-10) （2012-k3-10）
江苏省"青蓝工程"资助项目 （）
