砂性土边坡稳定性离心模型试验研究

Centrifuge model tests on the stability of sandy soil slopes

借助于西南交通大学TLJ-2型离心机,具体研究了不同含水率下三组砂性土边坡模型的稳定及破坏情况,并分析了砂性土边坡的破坏机理和破坏特征。试验结果表明:含水量是影响砂性土边坡稳定的重要因素。从边坡模型破坏后情况分析,对于有着多级平台的砂性土边坡,滑面较浅,沿各级平台后缘拉裂而坍塌,其破坏类型属于牵引式滑动。

Based on the TLJ-2 centrifuge of Southwest Jiaotong University,the stability and damage of sandy soil slope models under different moisture contents were concretely studied.Test results showed that the stability of sandy soil slopes had close relationship with moisture content.According to the damage situation after test,in regard to sandy soil slopes which have multiple platforms,whose slip surface was shallow and collapsed by tension crack along different levels of the plot form.The failure type of sandy soil slope is retrogressive slide.