The 24th IAHR-APD Congress (24th IAHR-APD Congress)

307 / 2024-02-29 13:39:34

Investigation of landslide-induced overtopping waves based on a meshfree model

Wave overtopping; Landslide-induced; SPH; Wave characteristics.

The landslide-induced overtopping waves on the dam can cause severe potential threaten downstream by releasing a large amount of energy. While previous studies have predominantly focused on landslide-induced tsunami waves or artificially induced overtopping waves, comprehensive research on the entire process of landslide-induced overtopping waves remains scarce. To evaluate the impact of landslides on overtopping waves, this study symmetrically investigates the relationship between landslide-related factors and overtopping wave properties. Factors such as landslide position, size, density, initial water depth, and dam slope angle are considered to characterize landslides, while overtopping wave height, velocity, safety margin, and individual overtopping volume are used to represent overtopping wave properties. The mesh-free Smoothed Particle Hydrodynamics (SPH) method is chosen for its capability to handle free surface flow, including large velocity, impact, and density. Additionally, prediction equations are provided to facilitate quantitative analysis of overtopping waves. The proposed SPH framework and prediction equations contribute to a better understanding of landslide-induced overtopping waves, offering valuable insights for disaster prevention and mitigation efforts.