江口至瓮安高速某滑坡稳定性分析与评价

Analysis and Stability Analysis of a Landslide on Jiangkou-Weng’an Expressway

针对贵州江口至瓮安高速K5 + 300~K5 + 680段右侧边坡为一路堑边坡,由于开挖以及降雨等原因,边坡发生变形,已采用抗滑桩进行治理,然而在强降雨后,部分抗滑桩严重变形,边坡处于欠稳定状态,随时会有滑动的可能,影响高速公路的正常运营,故对该滑坡进行稳定性分析及给出相应的防治措施显得十分重要。结合边坡的工程地质和水文地质情况,对相差的断面和裂缝进行了实测,根据目前的变形情况,对滑坡变形特征、变形机制及稳定性进行了分析,最后提出了相应的治理措施。

Since the right side slope of the K5 + 300~K5 + 680 section of Jiangkou-Weng’an Expressway in Guizhou is a cut slope, the slope has been deformed due to excavation and rainfall, and has been treated with anti-slide piles. However, it is under heavy rainfall. Afterwards, some anti-slide piles were severely deformed, and the slope was in an unstable state. It may slip at any time and affect the normal operation of the expressway. Therefore, it is very important to analyze the stability of the landslide and give corresponding prevention measures. Combined with the engineering geology and hydrogeology of the slope, the differential sections and cracks were measured. According to the current deformation situation, the deformation characteristics, deformation mechanism and stability of the landslide were analyzed, and finally the corresponding control measures were proposed.