Abstract
The slope of a reservoir area is unstable and can be destroyed by natural disasters, such as strong earthquakes and rainstorms. Landslide bodies that enter the water and generate landslide surges pose serious safety risks to terminals, ships, and hydraulic structures in a reservoir area. After analyzing landslide data in a reservoir area, a series of comparative tests was carried out to investigate the propagation characteristics of landslide-induced tsunamis in channel reservoirs, and the changes in water level values at various monitoring points in the river channel after the landslides entered the water were explored. The effects of landslide width and thickness on the characteristics of landslide-induced tsunamis were analyzed. The main target was a fixed-velocity ship in landslide-swelling water. The complex nonlinear motion characteristics of the ship on the water were studied to determine the safe navigation range.
Highlights
Tsunamis are water waves generated by impulsive disturbances such as river erosion, rainfall, groundwater erosion, water level fluctuation, earthquakes, human activities, and other external environmental conditions
The experimental investigation described aimed at modeling landslide-induced tsunamis
A three-dimensional research project was conducted on a river channel model to study the propagation
Summary
Tsunamis are water waves generated by impulsive disturbances such as river erosion, rainfall, groundwater erosion, water level fluctuation, earthquakes, human activities, and other external environmental conditions Unfavorable geological phenomena, such as bank collapses and slipping, occur frequently and can cause tsunamis [1,2]. Many experiments on tsunamis are being explored to investigate the run-up [25], the dynamic response of the sand bed [26], and the hydrodynamic pressure of a bore [27] These laboratory experiments have been performed in a sufficiently large experimental facility, there is little research on the interaction between landslide-induced tsunamis and sailing ships. The present paper investigates the propagation law of landslide-induced tsunamis in complex curved river channels, strengthens the early warning and prevention of geological disasters in reservoir areas, and explores the nonlinear effects of landslide-induced tsunamis on the primary degree-of-freedom motion response of a ship based on a series of landslide-induced tsunami tests
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