An experimental system, which consists of a digital camera and a loading system, is designed to investigate the failure mechanism of anti-dip rock slopes subjected to external loading. The modeling material is made by mixing sand, plaster, barite, glycerin, and water at a mass ratio of 44.4:30:22.5:2:32. Fine sand is evenly filled between the rock layers to simulate the joints of the anti-dip rock slopes. Anti-dip rock slope models with joint angles of 45°, 55°, 65°, and 75° are poured in the experiment. The complete load–displacement curves of the anti-dip rock slopes subjected to external loading are obtained to investigate the effects of the joint angle on the ultimate bearing capacities of the slopes. Based on the images captured by the digital camera under the high-speed shooting mode, the whole failure process of the anti-dip rock slopes is analyzed, including the crack evolution. Moreover, an image processing technique is proposed to capture the displacement vector diagrams of anti-dip rock slopes and the real-time deformation behavior of anti-dip rock slopes is investigated. The ultimate failure modes of the anti-dip rock slopes with different joint angles are discussed in detail. The sliding body is separated from the slope along the datum plane, which is always perpendicular to the slope joints. Failures occur at the top of the anti-dip rock slopes (near the external loading), while the bottom of the slopes remain intact. Based on the experimental results, the failure mechanism of the sliding blocks in the anti-dip rock slopes is revealed. The experimental results can be expected to assess the failure mode of anti-dip rock slopes subjected to external loading.

设计了一个由数码相机和加载系统组成的实验系统，研究了抗倾角岩质边坡在外载荷作用下的破坏机制。造型材料由沙子、石膏、重晶石、甘油和水按44.4:30:22.5:2:32的质量比混合而成。岩层间均匀填充细砂，模拟反倾岩边坡的节理。实验中浇注了节理角为45°、55°、65°和75°的反倾岩边坡模型。获得了抗倾角岩质边坡在外荷载作用下的完整荷载-位移曲线，研究了接缝角度对边坡极限承载力的影响。根据数码相机在高速拍摄模式下拍摄的图像，分析了反倾角岩质边坡的整个破坏过程，包括裂缝演化。此外，提出了一种图像处理技术来捕捉反倾岩边坡的位移矢量图，并研究了反倾岩边坡的实时变形行为。详细讨论了不同节理角度的抗倾岩边坡的最终破坏模式。滑动体沿基准面与边坡分离，基准面始终垂直于边坡节理。破坏发生在反倾岩斜坡的顶部（靠近外部载荷），而斜坡底部保持完好。根据试验结果，揭示了抗倾角岩质边坡中滑块的破坏机理。