A simulation method for silting promotion engineering on islands and reefs in high turbidity sea areas on muddy coasts

Abstract

The invention discloses a silt coast high-turbidity sea area island siltation promotion engineering simulation method. A body-fitted coordinate system is adopted to discretize a study sea area, sediment grain size grouping is considered, wave radiation stress is utilized to calculate the wave influence, a two-dimensional wave current sediment mathematic model is established, the siltation promotion area is calculated, the effective siltation promotion amount is counted, the siltation promotion result is estimated, and mechanism analysis is conducted. By means of the silt coast high-turbidity sea area island siltation promotion engineering simulation method, the wave current sediment mathematic model is established aiming at unique dynamic geomorphologic features of a silt coast island of having numerous curved shorelines, large water depth, complicated underwater topography, strong tides under the effect of rotating flow, high water body turbidity suffering a lot from the weather waves, and sediment movement jointly acted by wave currents; meanwhile, the influence of bottom frictional resistance changing with different underwater topographies and shoreline shapes and sediment concentrations on sand contents in different seasons is considered, and the siltation promotion engineering dynamic geomorphology effect simulation requirements of silt coast high-turbidity sea area islands with different topographic shapes can be adapted to and met.

Description

technical field [0001] The invention designs a method for simulating a silt-promoting project, in particular to a method for simulating the dynamic landform effect of a silt-promoting project on islands and reefs in high-turbidity sea areas on muddy coasts. Background technique [0002] With the rapid economic development, the demand for large ships is increasing day by day, and the deep-water coastline of the mainland coast is becoming increasingly tense. The island and reef coast has the great advantages of low development level and development potential of the deep-water coastline, and has gradually become a hot spot for coastal development and utilization. Relying on islands and reefs for reclamation has gradually become the main way of island and reef coastal development. In order to reduce the cost of filling, island and reef sea areas, especially high turbidity island and reef sea areas, often start with siltation promotion projects. The sedimentation promotion proje...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for simulating the silt-promoting engineering of islands and reefs in high-turbidity sea areas of silty coasts, aiming at solving the lack of dynamic geomorphological effects of silt-promoting projects on islands and reefs in high-turbidity sea areas of silty coasts in the prior art. simulated problem

Images