红岩寺至景阳公路路基边坡稳定性分析

对红岩寺至景阳公路K36+265~+355段路基边坡工程,分别采用二维极限平衡法和三维数值模拟法,从岩土体内部变形和应力的角度出发并结合安全系数大小进行边坡稳定性分析。结果表明:研究区整体已发生变形,变形以垂向沉降和纵向下滑为主;整体土层均受拉应力;存在潜在滑动面,滑面为圆弧形;边坡在正常工况下整体处于稳定状态,在降雨作用下,将形成潜在破坏面。考虑到暴雨天气及升级改造的种种未知因素,需要对此路段加以防护,以免路基滑塌。

Analysis of Subgrade Slope Stability of Hongyansi-Jingyang Highway

For the subgrade slope engineering of section K36+265~+355 of Hongyansi-Jingyang Highway, two-dimensional limit equilibrium method and three-dimensional numerical simulation method are respectively adopted to analyze the slope stability from the perspective of internal deformation and stress of rock and soil and combined with the size of the safety factor.The results show that:the overall deformation has occurred in the study area, the deformation is mainly vertical settlement and longitudinal sliding.Overall soil stratum is subject to tensile stress; there is potential sliding surface in circular arc shape; the whole slope is in steady state under normal working condition; and a potential failure surface would be generated under the influence of rainfall.Considering the heavy rain and upgrading of the various unknown factors, this highway needs to be protected to avoid subgrade slumping.