水力发电2026，Vol.52Issue(9)：7-14,8.
基于历史降雨序列的多层下蜀土边坡稳定性分析
Stability Analysis of a Multilayer Xiashu Soil Slope Based on Historical Rainfall Sequences
摘要
Abstract
Taking a Xiashu soil slide in Nanjing as the engineering case,the compression tests,permeability tests,quick shear tests,and repeated direct shear tests are carried out to analyze the effects of dry density on the physical properties and mechanical parameters of the soil,and then a three-dimensional numerical model is established to investigate the influences of daily rainfall and antecedent cumulative rainfall on the saturation,displacement and safety factor of a multilayer slope through numerical simulation.The results show that:(a)with the increase of dry density,the compression modulus,cohesion and internal friction angle of the soil all increase,whereas the permeability coefficient decreases;(b)daily rainfall has a significant influence on the saturation and displacement of shallow slope soils,while antecedent cumulative rainfall mainly controls the infiltration depth of rainfall,the greater the antecedent cumulative rainfall,the deeper the affected zone;(c)the influence of rainfall on the saturation of deep slope soils exhibits a certain lag effect,and the saturation changes significantly only when antecedent cumulative rainfall reaches a threshold value;and(d)the slope safety factor is negatively correlated with antecedent cumulative rainfall,whereas the rate of change of the safety factor is positively correlated with daily rainfall.关键词
多层下蜀土边坡/稳定性分析/历史降雨/前期累计降雨量/干密度/三维数值计算模型Key words
multilayer Xiashu soil slope/stability analysis/historical rainfall/antecedent cumulative rainfall/dry density/three-dimensional numerical model分类
建筑与水利引用本文复制引用
陈杰,贺一铭,靳春林,刘森林..基于历史降雨序列的多层下蜀土边坡稳定性分析[J].水力发电,2026,52(9):7-14,8.基金项目
江苏省自然资源厅地质数据智能应用技术创新中心开放基金(GDIATIC-202505) （GDIATIC-202505）
国家自然科学基金资助项目(41672258) （41672258）
