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以厂坝铅锌矿为例，通过实地调查及室内与野外实验，综合分析了该矿北帮边坡岩体的岩性分布特征、断层与节理发育状况等工程地质条件．在充分考虑到该矿为山坡型露天矿这一显著特点，以及当地地应力特征的基础上，选择最具代表性的剖面，建立了适当的力学模型．依照这一模型，利用有限单元法模拟边坡开挖卸荷的动态过程，依次计算了边坡现阶段和设计开采后期的位移场、破坏场．计算结果较好地解释了该边坡局部塌滑多发点的形成机制与过程．最后，对边坡在开采后期的整体稳定性进行了探讨，并提出了适当的防患措施，
Taking Changba Lead-Zinc Mine as an example, through the field investigation and indoor and field experiments, the lithologic distribution characteristics, fault and joint development conditions of the northern slope of this mine are analyzed synthetically. Taking into account the salient features of the mine as a hillside open-pit mine and the local stress characteristics, the most representative section is selected and an appropriate mechanical model is established. According to this model, the finite element method was used to simulate the dynamic process of slope excavation and unloading, and the displacement field and the failure field of the slope at the present stage and later stage of design and mining were successively calculated. The calculation results better explain the mechanism and process of the formation of multiple spots of local landslides in the slope. Finally, the overall stability of the slope in the later mining was discussed, and appropriate preventive measures were put forward.