A Physical Model Test Method for Coastal Landform Evolution

Abstract

The invention belongs to the technical field of coastal and offshore engineering model tests, and provides a physical model test method for coastal landform evolution, including a rapid production device and method for a moving bed model, and three-dimensional high-precision rapid measurement of large-scale test terrain. The coastal landform evolution test is carried out by the method provided by the present invention. Compared with the previous method, the terrain elevation of the moving bed model is determined by designing the elevation positioning rod and the contour line positioning frame, so as to realize the fast and accurate production of the moving bed model; The special treatment method of the stone cushion at the bottom of the moving bed model combined with the geotextile makes the water easy to drain and prevents the loss of model sand; by introducing the revolutionary three-dimensional laser scanning technology in the field of surveying and mapping, the measurement accuracy and accuracy of the large-scale test terrain model are greatly improved. work efficiency. This method can be applied to other types of hydrodynamic bed model experiments after appropriate adjustments, and has universal applicability.

Description

technical field [0001] The invention relates to a physical model test method for the evolution of coastal landforms caused by beach erosion under the action of waves, and belongs to the technical field of model tests of coast and offshore engineering. Background technique [0002] Coastal erosion will lead to the reduction of coastal land, the destruction of coastal structures, the degradation of bathing beaches, the deterioration of beach ecological environment, the increase of pressure on coastal protection, and the eroded sediment will be transported to the harbor and silted up to damage the waterway, thus becoming a serious environmental problem. Geological disaster. Coastal erosion disasters are common in my country's coastline, which brings huge loss of life and property to coastal cities. The methods to study coastal evolution mainly include field observation, numerical simulation and model test. Coastal evolution is caused by the coupling of water flow, sediment mo...

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Problems solved by technology

[0004] Aiming at the problems of low precision and low efficiency in the production and measurement of moving bed models in the prior art, the present invention provides a physical model test method for coastal landform evolution, including a rapid production device and method for moving bed models, and a large-scale test terrain Three-dimensional high-precision rapid measurement technology, etc.

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