不同试验因素获得强度参数对黄土边坡稳定性的影响

The Influence of Strength Parameters Obtained by Different Experimental Factors on The Stability of Loess Slope

为从室内试验角度研究影响黄土地区土壤强度取值的因素,文中从试验方法、试验操作细节与数据处理方面进行分析,对比研究不同软件、不同强度包络线、不同破坏准则、不同试样个数下的黄土边坡稳定性系数取值。试验表明,影响黄土地区边坡稳定性因素的排序为应力-应变曲线>试验方法>应变值>强度包络线>参数处理模型。

Slope stability analysis must provide strength parameters. In order to study the influence factors of strength parameter values from the angle of indoor experiment, a concrete analysis is made from the aspects of experimental methods, experimental operation details and data processing. Combined with the actual loess slope, the stability coefficients obtained by different software, different strength envelope, different failure criteria, and different number of samples are compared, respectively, and the stability coefficients of loess slope are compared with each other by using different software, different strength envelope, different failure criterion and different sample number. It is concluded that the order of factors affecting slope stability in loess areas is stress-strain curve > experimental method > strain value > strength envelope > parameter treatment model.