Investigation and dynamic analyses of rockslide-induced debris avalanche in Shuicheng, Guizhou, China

摘要: On July 23, 2019, a large catastrophic landslide occurred in Shuicheng, Guizhou, China. It was rapid and long run-out that resulted more than 50 casualties. The displaced materials traveled an approximate distance of 1250 m, with descending height around 465 m. In this paper, seismic record analyses numerical simulation were conducted to determine the behavior Shuicheng landslide. To main characteristics landslide, geological climatic settings obtained by conducting detailed field survey. DAN3D model used simulate propagation process observed combined Frictional-Voellmy provides assuring results simulating total duration is 60 s average velocity 20 m/s. maximum estimated be 40 m/s along right bank valley, while high initial 24 recorded at initiation Seismic records from nearby stations calculate location event interpret dynamic Arias intensity, Hilbert-Huang transform, Empirical mode decomposition obtain time history are expected portray similar landslides. This will improve accuracy hazard mapping region.