某高台阶排土边坡不同失稳模式下稳定性分析

Analysis of slope stability of a waste dump with high terrace under different failure modes

以国内某高台阶排土边坡为例,分别采用Bishop法、Morgenstern-Price法、Spencer法及余推力法,针对排土场不同失稳模式下边坡稳定性进行了研究。结果表明,对于高台阶排土场边坡,当基础存在薄弱覆盖层、自然地形较陡时,沿排土体内部近程滑动和沿排土体-地基界面滑动均为潜在可能失稳模式,相应边坡稳定性通过不同计算方法综合判定。

Based on a slope of waste dump with high terrace in China,the slope stability of waste dump under different instability modes are studied with Bishop method,Morgenstern price method,Spencer method and Residual thrust method respectively.The research shows that,when the foundation of waste dump with high terrace slope has weak overburden and steep natural terrain,both the short-range sliding and the sliding along the soil foundation interface are potential instability modes and the corresponding slope stability is comprehensively determined by different calculation methods.