부산대학교 도서관

Slope soil erosion is a common phenomenon in hilly areas and on reservoir slopes, with the primary dynamic factor attributed to the scouring of a thin layer of water, induced by rainfall or wave run-up, which leads to the incipient motion of soil particles. A comprehensive method for determining the incipient motion velocity of slope soils is proposed in this study, using a self-developed scour test device to conduct incipient motion test on slope clay soils. This study investigates the relationship between different clay particle contents, different slope gradients, and the critical incipient motion velocity of bank slope clay soils, and first determine the incipient motion velocity of bank slope clay soils, and then use the discrete element particle flow PFC program to accurately simulate the incipient motion of bank slope soils. The incipient motion velocity of the clay was accurately determined through simulating the scour incipient motion of the bank soil, using the discrete element method (DEM) PFC program. The results indicate that clay content size had a greater effect on the initial flow velocity of clay slopes; resulting in the formation of micro-clusters. The PFC results were compared with the measured values, revealing that the method based on the discrete element granular flow PFC program effectively simulates the scour incipient motion of bank slope soils.