高速公路挖方边坡稳定性分析及评价

Stability Analysis and Evaluation on Site Slope of Excavation for Expressway

由于受连雨天、暴雨等极端天气影响,施工过程中挖方边坡易出现下错滑动地质灾害险情。以某国道高速路YK31+260~YK31+310右侧挖方边坡为例,当边坡出现滑动时,通过地质勘察,分析滑动的成因机制,并辅以计算,对边坡的稳定性做出定性和定量分析评价,为后续的施工提供可靠的依据,并给出处治措施及建议。

Due to the influence of extreme weather such as continuous rainy days and rainstorm and so on,the downward sliding geological hazards are prone to appear in the site slope of excavation during the construction.Taking the site slope of excavation on the right side of a national highway YK31+260~YK31+310 as an example,the formation mechanism of sliding is analyzed through the geological investigationwhen sliding occurs on the side slope,and with the assistance of calculation,the qualitative and quantitative analysis and evaluation are made on the stability of the side slope,so as to provide reliable basis for the subsequent construction,and give the treatment measures and suggestions.