Coastal shoal ecological mud flat cultivation method based on dredged soil

Abstract

The invention belongs to the field of ecological coast restoration engineering, and relates to a method applied to coast slope protection engineering and ecological coast restoration engineering, in particular to an ecological beach cultivation design method for a coastal shoal on an eroded tidal flat. The cultivation method comprises the following steps: throwing and filling a to-be-repaired area of the eroded tidal flat into a coast slope surface by using throwing and filling soil. Wave dissipation sandbags are arranged on the low tidal flat, salt marsh vegetation is transplanted and planted on the high tidal flat and the middle tidal flat in a mixed mode, and protection of the eroded tidal flat coast is completed. According to the method, local dredged soil resources are fully utilized, and dredged soil is turned into wealth, so that the problem that construction resources are gradually reduced and tense is solved. By means of the wave dissipation sandbags, the wave damage effect of waves is reduced, erosion is reduced, and dredged soil can be further fixed through salt marsh vegetation. The method has the advantages of simple construction, no need of large-scale machinery cooperation, cost reduction, economy, simplicity, less resource waste, safe and reliable water and soil maintenance, beautiful degree improvement, and facilitation of environment protection.

Description

technical field [0001] The invention belongs to the field of ecological coastal restoration engineering, and relates to a method for cultivating and designing a coastal shoal in an eroded tidal flat, and relates to a method applied to coastal slope protection engineering and ecological coastal restoration engineering. Background technique [0002] my country is a major dredging country in the world, with nearly 2 billion cubic meters of dredging in 2019. Dredging projects play a huge role in developing regional economy and improving waterway transportation capacity. The dredged soil in the port channel is mainly silt and clay. The chemical composition and content of each component are similar to those of land clay. It contains abundant secondary minerals and is a good renewable resource. Traditionally, dredged soil has always been regarded as waste, and it is mostly disposed of by throwing it out, causing damage to the siltation of the waterway, the marine environment and th...

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Problems solved by technology

[0005] The purpose of the present invention is to make full use of the dredged soil resources of the port channel, turn the dredged soil into treasure, solve the problem of decreasing and tense construction resources, and provide a kind of energy-efficient construction method implemented on the coast of eroded tidal flats on this basis. Restoring the coast, preventing coastal erosion, and satisfying the requirements of coastal landscape design, and is a simple and relatively cheap method of cultivating coastal shoal ecological tidal flats

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