Physics-based Modeling of the Earthquake-Landslide-Surge-Dam Overtopping Disaster Chain Scenarios

Key Points

• This research aims to develop a comprehensive modeling framework to simulate the chain disaster scenarios induced by strong earthquakes, focusing on the interactions between earthquakes, landslides, and dam responses.
• Developed a multiscale numerical simulation framework combining Spectral Element Method (SEM), Finite Element Method (FEM), and Smoothed Particle Hydrodynamics (SPH).
• Conducted full process simulations from earthquake rupture to landslide initiation, movement, and deposition.
• Simulated the interactions between landslide water entry, wave generation, and dam structure using a SPH-FEM coupling model.
• Successfully modeled the entire disaster chain from earthquake rupture to dam impact, revealing complex coupling effects.
• Demonstrated that the proposed framework allows for accurate reconstruction and transfer of landslide dynamics and geometric parameters.
• Provided scenario analysis for a typical reservoir area under seismic conditions, illustrating potential instability and overtopping risks.