降雨条件下非饱和土质公路边坡稳定性分析  

Slope Stability Analysis of Unsaturated Soil Highway under the Conditions of Rainfall

作　　者：孙刚志[1] 

机构地区：[1]辽宁省交通科学研究院,沈阳110015

出　　处：《北方交通》2011年第5期28-30,共3页Northern Communications

摘　　要：基于降雨入渗对边坡稳定性影响机理的分析,采用SLOPE/W软件和SEEP/W软件,模拟了降雨强度为50mm/h和80 mm/h条件下边坡土体渗流场的变化。算例分析表明:相同降雨强度条件下,边坡土体孔隙水压力随着降雨时间的推移而逐渐增大。相同降雨历时条件下,降雨强度越大边坡内的饱和区域越大,孔隙水压力也越大;降雨持续时间对边坡稳定的影响程度与降雨强度大小有关。Based on the analysis of rainfall infiltration＇s influence mechanism on slope stability,the change of Seepage field of slope soil is simulated by using SLOPE/W and SEEP/W when rainfall intensity is 50mm/h and 80mm/h.The example analysis shows that： under the same rainfall intensity,pore water pressure in slope soil increases gradually with rainfall continues.Under the same rainfall duration,the bigger the rainfall intensity is,the larger the saturated region in slope is and the bigger the pore water pressure is;rainfall duration＇s influence on slope stability is related to rainfall intensity.

关 键 词：高速公路 非饱和 降雨强度 边坡稳定 安全系数 

分 类 号：U416.14[交通运输工程—道路与铁道工程]