摘要
Abstract
Rainfall filtration makes water content in unsaturated soil slope increased and the shear resistance of soil decreased, which is one of the major reasons of shadow slope instability caused by rainfall.In this paper,based on Green-Ampt model applicable for loess area, the filtration model of loess slope considering borrowed soil layer is advanced and the influence of borrowed soil on slope filtration is analyzed.The result shows that borrowed soil proportion has larger influence on wetting front depth and accumulated filtration capacity, which are significantly affected by the filtration coefficient of borrowed soil, but little affected by saturated water content.Therefore, the requirements for borrowed soil proportion are put forward based on model analysis.关键词
客土层/入渗模型/湿润锋/累积入渗量Key words
borrowed soil layer/ infiltration model/ wetting front/ accumulated filtration capacity分类
交通工程
