The existence of bedding planes in rock materials has an obvious impact on the material mechanical properties and the failure process of engineering projects. In this study, a series of pre-cracked models with different bedding plane properties (i.e., strength reduction factor, bedding plane angle and spacing) were established and simulated to fail under the uniaxial compression. The results indicate that the increases of the strength reduction factor and the bedding plane spacing lead to the increasing peak strength, the change of peak strength regarding the bedding plane angle presents a concave upward trend. In terms of crack evolution, the proportion of cracks formed in rock matrix increases concerning the increasing strength reduction factor and bedding plane spacing, the abovementioned crack proportion in models with increasing bedding plane angles firstly decreases and then increases. The rock matrix has higher mechanical characteristics than bedding planes, the change of crack proportion can account for the peak strength change from the microscopic viewpoint. By summarizing the failure patterns, the failure of models with the 45° ~ 75° bedding plane angle is induced by cracks formed in bedding planes, which can be depicted and discussed by the plane of weakness model. The above results imply that the rock slope stability can be evaluated by analyzing bedding plane properties in the field.

岩石材料中层理面的存在对材料力学性能和工程破坏过程有着明显的影响。在这项研究中，建立了一系列具有不同层理面特性（即强度折减系数、层理面角度和间距）的预裂模型，并模拟了在单轴压缩下的失效。结果表明，强度折减系数和层理面间距的增加导致峰值强度增加，峰值强度随层理面角度的变化呈凹上升趋势。在裂缝演化方面，随着强度折减系数和层理面间距的增加，岩石基质中形成的裂缝比例增加，随着层理平面角度的增加，上述裂纹比例先减小后增大。岩石基质比层理面具有更高的力学特性，裂缝比例的变化可以从微观角度解释峰值强度的变化。通过对失效模式的总结，45°~75°层理平面角模型的失效是由层理平面上形成的裂缝引起的，这可以用弱平面模型来描述和讨论。上述结果意味着岩质边坡稳定性可以通过现场分析层理面特性进行评价。通过对失效模式的总结，45°~75°层理平面角模型的失效是由层理平面上形成的裂缝引起的，这可以用弱平面模型来描述和讨论。上述结果意味着岩质边坡稳定性可以通过现场分析层理面特性进行评价。通过对失效模式的总结，45°~75°层理平面角模型的失效是由层理平面上形成的裂缝引起的，这可以用弱平面模型来描述和讨论。上述结果意味着岩质边坡稳定性可以通过现场分析层理面特性进行评价。