In order to explore the overall stability of slope before and after local failure,as well as the effect of excavation method on slope stability,the slope project on the north side of Jingxi-Barak mining area in Jinchuan of Xinjiang was taken to study local failure characteristics of slope and slope stability under different excavation state by adopting distinct element method.It is found that the distribution of the maximum main stress has a great impact on the slope stability,and the factor of safety for slope stability tends to decrease first and then increase from the stage before local failure to the stage after failure;with more excavated benches,the factor of safety for slope stability tends to increase first and then decrease;with the excavated benches more than 1,the overall factor of safety of the slope meets the requirements;with slope angle less than or equal to 60°,the overall factor of safety also meets the requirements,and the suitable slope angle is 60°.
关键词
高陡边坡/露天边坡/边坡稳定性/安全系数/离散元法/台阶开挖/台阶坡角/破坏特征
Key words
high-steep slope/open-pit slope/slope stability/factor of safety/distinct element method/bench excavation/bench slope angle/failure characteristics
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