平朔东露天矿排土场边坡破坏模式与稳定性研究

通过对平朔东露天矿南洼村排土场实际工程地质及水文地质条件进行研究，建立了东露天矿排土场边坡稳定研究工程地质模型，采用PFC数值分析软件模拟研究了排土场边坡失稳过程中的应力、位移、塑性区分布特征，探明了边坡变形破坏模式及失稳机理，运用Slide极限平衡分析软件对南洼村排土场现状边坡稳定性进行评价，结合现场实际条件提出了边坡变形破坏的防治措施，为保证边坡安全、实现高效生产提供了理论依据。

Study on failure mode and stability of dump slope in open-pit coal mine

This paper studies the actual engineering geology and hydrogeological conditions of the dump in Nanwa village,which is the important part of Donglutian open-pit coal mine in the pingshuo mining area,an engineering geological model for slope stability study in Donglutian open-pit coal mine is established,the distribution characteristics of stress, displacement and plastic zone in slope instability are simulated by PFC software,the deformation failure mode and instability mechanism of slope were proved,then slide limit balance analysis software is used to evaluate the slope stability of nanwa village dump,finally, the prevention measures of slope deformation and failure are put forward according to the actual conditions,it provides theoretical basis for ensuring slope safety and realizing efficient production.