东南大学学报（自然科学版）2016，Vol.46Issue(z1)：153-158,6.DOI:10.3969/j.issn.1001-0505.2016.S1.027
强降雨作用下浅层滑坡的入渗及稳定性
Infiltration and stability of shallow landslide under intensive rainfall conditions
摘要
Abstract
The influence of rainfall infiltration on the slope stability was improved based on a rainfall infiltration model. On the basis of Mein-Larson infiltration model, the concept of slope surface water strength and infiltration capacity was proposed. Stability evaluation models considering weakening of strength parameters by water were used for uniform slopes under rainfall conditions. The model was established by combining slope rainfall infiltration model with the infinite slope limit equilibrium method. The rainfall infiltration and the stability for a typical slope were investigated. The results show that the slope surface water strength and infiltration capacity decrease, when the slope angle in-creases. The calculated stability results demonstrate that the solid particles and water mixture have the same result with the soil skeleton under the condition of rainfall. The rainfall intensity is an im-portant parameter to control the stability of landslide. The migration rate of wetting front and the at-tenuation of infiltration capacity velocity show a rising trend with the increase of rainfall intensity. The rainfall causes wetting front moving deeply and results in the slope safety factor decreasing. Once the safety coefficient of the slope reaches a critical state, the slope failure occurs.关键词
斜坡入渗/浅层滑坡/强降雨/对象选择/稳定性评价Key words
slope infiltration/shallow landslide/intensive rainfall/object choice/stability evalua-分类
建筑与水利引用本文复制引用
王进,冷先伦,阮航,刘世伟,崔臻..强降雨作用下浅层滑坡的入渗及稳定性[J].东南大学学报（自然科学版）,2016,46(z1):153-158,6.基金项目
NSFC-云南联合基金重点资助项目(U1402231)、国家重点基础研究发展计划(973计划)资助项目(2015CB057905) （U1402231）
