露天矿边坡稳定性分析及预应力锚索加固治理方法

Analysis on slope stability and control method of prestressed anchor cable reinforcement in open-pit mine

将极限平衡法和强度折减法相结合,以广西七〇一露天矿边坡为工程实例,运用有限差分软件FLAC3D强度折减法对边坡进行稳定性分析,求得降雨条件下边坡的安全系数以及潜在的滑移面,确定滑移模式和抗滑加固治理方案,再采用极限平衡法计算边坡的下滑力和锚索的预应力,最后运用FLAC3D强度折减法检验了抗滑加固方案的合理性和可靠性。

Combining limit equilibrium method and strength reduction method, based on the actual Guangxi 701Open-pit Mine slope, the author carries out stability analysis on slope using FLAC3 Dstrength reduction method, obtains the slope safety factor under the rainfall condition and potential slip plane, and determines the landslide mode and anti-sliding reinforcement scheme.The article adopts limit equilibrium method to calculate the slope slide force and prestress of anchor cable, and uses FLAC3 D strength reduction method to examine the rationality and reliability of anti-sliding reinforcement scheme.