Numerical Simulation of the Large‐Scale Huangtian (China) Landslide‐Generated Impulse Waves by a GPU‐Accelerated Three‐Dimensional Soil‒Water Coupled SPH Model

Abstract

Large-scale landslides near restricted water bodies, such as lakes, dammed reservoirs, and mountain rivers, may generate huge surge waves that in turn cause casualties and building damage. For example, a catastrophic rockslide, with a large volume of approximately 3 × 10 8 m 3 , slipped and fell into the Vajont reservoir in Italy in 1963. The resultant surge wave overtopped the Vajont dam causing the death of nearly two thousand people (Panizzo et al., 2005). This type of disaster chain involves complex multi-physical and multiscale problems, including landslide deformation, free-surface capture, multiphase coupling, and strong three-dimensional (3D) structural evolution.Numerous experimental studies have been conducted using indoor water channels. Generally, according to the type of sliding mass, these studies can be divided into two categories such as rigid-body models (Ataie-Ashtiani

Numerical simulation of potential impulse waves generated by the Mogu rock landslide at varying water levels in the Lianghekou Reservoir, China

“…Utilizing this as the initiation of SPH modelling, the study investigates the impact of landslide-induced tsunamis on shipping along the Yangtze River through 2D and 3D simulations. Huang et al (2023) employed the graphics processing unit technology of the open-source platform DualSPHysics to integrate landslide dynamics and soil-water interface. This approach enabled high-resolution modelling and large-scale simulations for complex problems involving 3D landslide-induced impulse waves.…”

Numerical simulation of potential impulse waves generated by Mogu toppling rock slope at varying water levels in Lianghekou Reservoir, China

“…The landslide-induced tsunamis and their impacts on shipping on the Yangtze River are investigated by 2D and 3D simulations. Huang et al (2023) used the graphics processing unit technology of the open-source platform DualSPHysics to couple the landslide dynamics and soil-water interface to achieve capabilities of large-scale simulation and high-resolution modeling for threedimensional landslide-generated impulse wave problems. Du et al Du et al (2021) took full advantage of MPM in simulating large deformation of soil and gravity-driven flow of water to reproduce the entire process of landslide-induced surge and proposed the two-phase double-point material point method (TPDP-MPM) to handle the boundary without setting boundary particles.…”

Large-scale three‑dimensional experimental investigation on potential high landslide‑induced waves in Gushui Reservoir, China

“…In recent years, these hazards have been extremely prevalent all over the world. On July 20, 2009, the Huangtian landslide triggered by rainfall in the Xiaowan reservoir in Southwest China killed approximately 14 people (Huang C et al 2023, Xu et al 2021). The impulse wave of more than 5 m induced by the Hongyanzi landslide in the Three Gorges Reservoir Area (TGRA) caused 2 deaths on June 24, 2015 (Xiao et al 2018, Zhou et al 2016.…”