Block-flexure toppling failures in interbedded anti-inclined rock (IAR) slopes present significant risks to infrastructure and safety. Based on the Linda landslide field investigations, this study conducted a series of physical modelling tests encompassing 15 slope angle and bedding angle combinations. The aim of 15 sets of tests was to explore the deformation and failure mechanisms in IAR slopes. The observations during the deformation and failure stages elucidated how changes in slope and bedding angles influence rock mass deformation and failure characteristics. The findings highlight that slope angle critically impacts IAR slope stability, while bedding angle notably affects deformation depth, failure area, and failure surface configuration. IAR slopes with bedding angles less than 60° tend to exhibit shallow, single-surface failures with the linear failure surface, whereas bedding angles exceeding 70° lead to deep-seated, large-area, multi-surface failures characterised by double-folded failure surfaces. The magnitude of the failure inclination angle increases with slope and bedding angles, ranging from 0 to 35°. Furthermore, deformation and failure in IAR slopes involve the progressive extension of cracks from the slope crest to the interior, eventually reaching the slope toe. Finally, the block-flexure toppling process in IAR slopes can be divided into an incubation deformation stage and an accelerated deformation stage, and based on curve characteristics, different deformation modes of the IAR slopes can be further classified as stepwise cumulative accelerated deformation mode and leap deformation mode.

互层反倾斜岩石 (IAR) 斜坡中的块体弯曲倾倒破坏给基础设施和安全带来了重大风险。本研究以 Linda 滑坡现场调查为基础，进行了一系列物理模拟试验，包括 15 个坡度角和层理角组合。 15 组测试的目的是探索 IAR 边坡的变形和破坏机制。变形和破坏阶段的观察阐明了坡度和层理角度的变化如何影响岩体变形和破坏特征。研究结果强调，坡度角度严重影响 IAR 坡度稳定性，而层理角度显着影响变形深度、破坏面积和破坏面形态。层理角度小于 60° 的 IAR 斜坡往往会表现出具有线性破坏面的浅层单面破坏，而层理角度超过 70° 则会导致深层、大面积、多表面破坏，其特征是双折破坏表面。破坏倾角的大小随着坡度和层理角度的增加而增加，范围从0°到35°。此外，IAR 斜坡的变形和破坏涉及裂缝从坡顶向内部逐渐扩展，最终到达坡脚。最后，IAR边坡的块体弯曲倾倒过程可分为孕育变形阶段和加速变形阶段，根据曲线特征，IAR边坡的不同变形模式可进一步分为阶梯累积加速变形模式和跳跃变形模式。变形模式。