Abstract

Large-scale instability of a landslide body, sliding down a bank slope and entering water at a high speed, arouses landslide surges. Taking the water entry point as a source point, they spread rapidly to surrounding areas, increasing the danger risk of vessel passages in the water area. In this paper, adopting an orthogonal experimental design method, based on the test data, the Three Gorges Reservoir area was derived in order to calculate the height of the first wave of the bank landslide surge: to analyze the slope angle, the geological environment, the volume of the landslide surge, and the landslide surge wave steepness; to study the landslide volume effect on ship rolling and the swaying motion rule; and to explore the landslide surge in different ship rolling positions and transverse oscillation characteristics. This study can provide theoretical support for the navigation safety of ships in landslide surge waters.

Highlights

  • The Three Gorges Reservoir area along the Yangtze river is located in the Sichuan basin and the middle-lower Yangtze plain area

  • Based on an orthogonal test with a physical model of a landslide-induced surge, we studied the characteristics of the height of the first wave and the steepness of the wave, and discuss here the influence of landslide surges on ship roll and heave

  • When a ship is sailing in a landslide surge water area, only the rolling motion and the swaying motion needs to be considered for navigation safety

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Summary

Introduction

The Three Gorges Reservoir area along the Yangtze river is located in the Sichuan basin and the middle-lower Yangtze plain area. Many studies have been conducted on landslide-induced surge physical model experiments, ship nonlinear motion, and wave steepness characteristics. Through orthogonal experiments with physical models, scholars have studied the wave parameters, propagation law, attenuation coefficient, and other parameters of landslide-induced surges, Huang [4], Wang [5], and Aaron [6] focused on shallow water, complex topography, and non-hydrostatic separately. The 3D experiment trails were conducted in a 2.1 m long, 2.0 m wide, and 0.2–0.4 deep basin Some experts, such as Lan Kang [12], Sakakibara [13], and John Grue [14], have studied the movement of ships on the earthquake-induced tsunami flow by writing programs and model tests. The research results can provide a theoretical reference for the rational division of waterway warning areas and further improve the navigation safety of ships

Model Scale Ratio
Design
Ship Experimental Design
Typical Working Condition Analysis
Measuring Instrument
The Propagation Law of Landslide-Induced Surges
The Test Study of First Wave Height
The Formula of Landslide-Induced Wave Height
The Wave Steepness Characteristics of Landslide-Induced Surge Waves
The Wave Steepness Characteristics of Landslide Sections
The Wave Steepness Characteristics of the Straight Channel
The Wave Steepness Characteristics of the Curved Channel
The Ship Motion Characteristics Caused by Landslide Surges
The Influence of the Landslide Volume on Ship Roll Characteristics
The Effect of Landslide Volume on the Ship’s Swaying Characteristics
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