摘要
定性地分析了降雨强度、降雨历时以及土壤渗水性对土壤含水率变化的影响,定量地分析了含水率变化与黄土抗剪强度的关系,并通过计算分析了不同入渗深度对黄土边坡稳定性的影响,得出对某一特定边坡均有一个临界入渗深度值。对于已形成的边坡可以根据临界入渗深度值,按预报的降雨强度和降雨历时,计算出可能的入渗深度,进而判断该边坡是否稳定;对于将要开挖的黄土边坡,根据不同的降雨频率,得出可能的入渗深度,按此入渗深度确定出合理的边坡型式。
Influence of rainfall density,rainfall duration and perviousness of soil on changes of soil moisture are analyzed qualitatively. Relationship between the shear strength of loess and changes of soil moisture is also analyzed quantitatively. After the calculation on influence of different percolation depths on loess slope stability, a decision was gained that a certain slope carried with a certain critical percolation depth. One can estimate the stability of existing slope by compare critical percolation depth with the potential percolation depth that calculated by critical rainfall density and rainfall duration. One also can choose proper slope style by the calculating result.
出处
《水土保持通报》
CSCD
北大核心
2005年第5期42-44,共3页
Bulletin of Soil and Water Conservation
