Coastal geomorphological evolution physical model test method

A technology of physical model and test method, which is applied in the field of coastal and offshore engineering model tests, can solve problems such as low efficiency and low measurement accuracy, and achieve the effects of easy discharge, universal applicability, and prevention of model sand loss

Active Publication Date: 2020-12-04
DALIAN UNIV OF TECH
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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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  • Coastal geomorphological evolution physical model test method
  • Coastal geomorphological evolution physical model test method
  • Coastal geomorphological evolution physical model test method

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Embodiment Construction

[0031] The embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings. The background of the present invention is the beach physical model test and test data of a bay ecological improvement project in a certain city.

[0032] figure 1 Shown is the physical model test flow of coastal landform evolution.

[0033] S1. Based on years of measured wave, tide level and wind data from marine stations near the project area, the wave numerical model is used to calculate the design wave elements and design water level at the location of the repaired beach project, and determine the model test conditions and test groups. For the evolution of coastal beach landforms, tidal currents and waves are the main driving factors. Due to the shielding effect of the shallow water area near the coast extending to the sea, the beach is mainly affected by waves and the near-shore wave-generated currents generated after breaking.

[0034] S2. Sel...

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Abstract

The invention belongs to the technical field of coastal and offshore engineering model tests, and provides a coastal geomorphological evolution physical model test method, which comprises a rapid manufacturing device and method of a moving bed model, and three-dimensional high-precision rapid measurement of a large-range test terrain. Compared with the prior art, the method provided by the invention has the advantages that the terrain elevation of the moving bed model is determined by designing the elevation positioning rod and the contour line positioning frame, so that the moving bed model can be quickly and accurately manufactured; through a special treatment mode of combining a pebble cushion layer at the bottom of the moving bed model with geotextile, water is easy to drain, and modelsand loss is prevented; by introducing a revolutionary three-dimensional laser scanning technology in the surveying and mapping field, the measurement precision and the working efficiency of a large-scale test terrain model are greatly improved. The method can be applied to hydrodynamic moving bed model experiments of other types through proper adjustment, 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 吴浩房克照孙家文王平
Owner DALIAN UNIV OF TECH
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