西华大学学报（自然科学版）2026，Vol.45Issue(3)：41-49,9.DOI:10.12198/j.issn.1673-159X.6050
路堤边坡深层与浅层稳定影响因素敏感性差异分析
Sensitivity Difference Analysis of Influencing Factors for Deep and Shallow Stability of Embankment Slopes
摘要
Abstract
To investigate the primary and secondary relationships as well as differences in sensitivity factors under two common failure modes of embankment soil slopes:deep-seated overall circular sliding and shallow slope-parallel surface sliding.Based on the measured shear strength parameters of red bed mudstone embankment fill in the southwestern region,employing an orthogonal experimental design for multi-factor sensitivity analysis and utilizing the Geo-slope slope stability analysis software,this study sep-arately analyzed the influence of individual strength parameter variations on the safety factors for deep and shallow stability of an embankment slope.It investigated the sensitivity and hierarchy of four factors-slope height,slope ratio,cohesion,and internal friction angle-under these two failure modes,and compared their differences,and discussed the implications for practical embankment engineering.The results indicate that:Under normal conditions,the safety factors for both deep-seated and shallow stability of an embankment slope exhibit a linearly increasing trend with the enhancement of soil strength parameters.The primary and secondary relationships of factor sensitivity for deep-seated stability versus shallow stability in a homogen-eous slope are distinctly different.For the former(deep-seated stability),the order of factor sensitivity from primary to secondary is as follows:slope height,slope ratio,internal friction angle,and cohesion.For the latter(shallow stability),cohesion is the most sensitive factor,followed by slope ratio,internal friction angle,and slope height.Moreover,the ratio of the safety factor range for cohesion to that for slope height reaches 6.3.This demonstrates that for the deep-seated stability of embankment soil slopes,geometric para-meters are more influential than mechanical parameters.Consequently,greater emphasis should be placed on the construction height and slope ratio during design.For shallow slope stability design,increasing atten-tion must be paid to the loss of soil cohesion after water immersion to prevent shallow instability failures.关键词
路堤边坡/深层与浅层稳定/正交试验设计/敏感性分析/安全系数Key words
embankment slope/deep-seated and shallow stability/orthogonal experimental design/sensitivity analysis/factor of safety分类
建筑与水利引用本文复制引用
杨澜,连继峰,王晨,张月明,陈洋..路堤边坡深层与浅层稳定影响因素敏感性差异分析[J].西华大学学报（自然科学版）,2026,45(3):41-49,9.基金项目
四川省自然科学基金面上项目(2024NSFSC0164). （2024NSFSC0164）
