Abstract As a useful tool to simulate the movement of granular materials, the Particle Flow Code is used to analyze the dynamic process of the Xinmo landslide, including: disintegration, entrainment, granular flow and accumulation. The microparameters of the landslide rock mass were calibrated with uniaxial compression and landslide deposition simulations. The results show that the kinetic characteristics of the collapse mass were more sensitive to the bond strength than to the friction coefficient. For the colluvium on the runout path, the influence on the kinetic characteristics was insignificant in the case of the lower bond strength and friction coefficient. The whole process lasted approximately 100 s, and the main sliding time was 65 s. The peak velocity was 72.4 m/s, and the maximum displacement was approximately 2.5 km. The results indicate that the gravitational potential energy was mainly converted into friction energy and kinetic energy in the acceleration stage. However, the proportion of the collision energy increased gradually in the deceleration stage. The entrainment effect plays an important role in the Xinmo landslide movement. The high gravitational potential energy of the collapse mass was the basis of the high mobility, and the mobility was further enhanced because of the entrainment effect.

中文翻译：

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新磨滑坡动力过程的离散元法研究

摘要 作为模拟粒状物质运动的有用工具，粒子流代码用于分析新磨滑坡的动态过程，包括：崩解、夹带、粒流和堆积。滑坡岩体的微观参数通过单轴压缩和滑坡沉积模拟进行校准。结果表明，塌陷体的动力学特性对粘结强度比对摩擦系数更敏感。对于跳动路径上的崩积层，在粘结强度和摩擦系数较低的情况下，对动力学特性的影响不显着。整个过程持续约100 s，主滑动时间为65 s。峰值速度为 72.4 m/s，最大位移约为 2.5 km。结果表明，重力势能在加速阶段主要转化为摩擦能和动能。然而，在减速阶段碰撞能量的比例逐渐增加。夹带效应在新磨滑坡运动中起重要作用。坍塌体的高重力势能是高迁移率的基础，由于夹带效应，迁移率进一步增强。