凯羊高速公路RK9滑坡形成机制及治理措施

Formation Mechanism and Treatment Measures for RK9 Landslide on Kaili-Yang jia Expressway

基于野外地质勘查、现场监测及数值计算,对凯(里)羊(甲)高速公路RK9滑坡地质条件、形成机制、治理措施进行分析。结果表明:该滑坡为大型牵引式顺层滑坡,平面形态具有二级滑动特征;滑坡变形最大值为5 673.3 mm,变形主要集中在暴雨期;引发滑坡的主要因素为降雨及工程活动;采用清方、坡面防护、抗滑桩加固、综合排水等措施对滑坡进行综合处治,效果良好。

Based on field investigation, monitoring and numerical analysis, the geology conditions, formation mechanism and treatment measures of the RK9 landslide located in Kaili-Yangjia expressway were analyzed. The results show that the RK9 landslide is a great pull-type bedding landslide with a secondary-slide planform. The maximum deformation value was 5 673.3 mm, and the deformation mostly generated during the storm period. It indicates that the main factors triggering landslide are rainfall and engineering activities. Volumes removing, slope surface protection, anti-slide piles reinforcement, drainage and other measures were conducted to treat landslide, and the effects are noticeable.