| dc.description.abstract | This study analyzes landslide of Luhu mountain located in Nanzhuang Township, Miaoli County, and explores the landslide behavior and the sliding mechanism. This study proposes a discrete element model to simulate the landslide of Luhu mountain. The topographic data, provided by Sinotech engineering consultants, Ltd., are used as the basis for comparison. After the proposed DEM model is validated, we investigate internal physical properties, including translational velocity vector, fluctuation velocity distributions, granular temperatures, coordination number, solid fraction and von mises stress. As inter-particle friction coefficient decreases, the collision mechanism dominates the energy loss and the final deposition is much slender. In contrast, as inter-particle friction coefficient increases, the friction mechanism dominates the energy loss and the final deposition is wider. Due to the natural obstacles in the rugged terrain, collision mechanism plays an important role in the dissipation of system energy. According to parametric study, the final deposition is the closest to the actual sedimentary topography when μ_pp=0.0875 and μ_pw=0.70. The translational and rotational fluctuation velocity distributions in all three directions exhibit Maxwellian distributions. However, the peaks of the y-direction and z-direction translational fluctuation velocities at 24sec respectively show left-shifted and right-shifted phenomena, attributed to the fact that some of the particles have deposited by this moment. Internal physical properties change during landslide process, such as granular temperatures, coordination number, solid fraction and von mises stress. Coordination number, solid fraction and von mises stress show a positive correlation. | en_US |