Review on Numerical Simulation of the Internal Soil Erosion Mechanisms Using the Discrete Element Method

Internal erosion can trigger severe engineering disasters, such as the failure of embankment dams and uneven settlement buildings sinkholes. This paper comprehensively reviewed mechanisms soil internal studied by numerical simulation, which facilitate uncovering mechanism tracing movement particles. The initiation development are jointly influenced geometric, mechanical, hydraulic conditions, determine pore channels force chains in soil. geometric conditions fundamental to resistance, whereas mechanical significantly change whether occurs. process be divided into particle detachment, transport, clogging. first is primarily affected chains, latter two mostly channels. stability mainly determined channels, act external disturbances. accompanied contact failure, chain bending, kinetic energy burst particles, other processes due multi-factor coupling.