兴山县龙王嘴边坡稳定性分析与加固设计

The stability analysis and reinforcement design on Longwangzui high stiff rock slope of Xingshan county in TGPs reservoir area

龙王嘴边坡系坡高达70 m、坡角达70 °的高陡岩质边坡。分析了宜-秭公路石峡段龙王嘴高边坡变形的地质条件,在定量评价龙王嘴高边坡稳定性的基础上,进行了该高边坡的施工图加固设计。根据其特点将350 m长的坡段分为A,B,C三个区,分别采取预应力锚索与锚杆加固、挂网喷射混凝土支护和喷射混凝土支护等措施,实践证明,工程治理效果良好。

Long Wang Zui rock slope has a height of 70 m and a slope angle of 70 °, this paper analyzes the engineering geological conditions which caused the deformation of the slope. Based on the characteristic of the high stiff slope, the slope with length of 350m may be divided into 3 zones of A, B and C, the slope reinforcement of A zone is combined with prestressed anchor cables and prestressed anchor bolts, the slope reinforcement of B zone is combined bolting and shortcrete, while the slope reinforcement of C zone is shortcrete, those measures are proved to be practical and economical. The stability and the stability factor of the slope are also analyzed in the paper; the design of the slope reinforcement is presented in detail.