Design method for preventing and reducing silt in construction field of encircling type port area

Abstract

The invention relates to a design method for preventing and reducing silt in the construction field of an encircling type port area. The design method for preventing and reducing the silt in the construction filed of the encircling type port area is characterized by comprising the first step of establishing and verifying a sediment mathematical model under the combined action of wave currents, the second step of calculating back-silting in the construction period of the encircling type port area, the third step of analyzing back-silting influencing factors in the construction period of the encircling type port area, and the fourth step of forming the measures of preventing and reducing the silt in the construction period of the encircling type port area. The design method for preventing and reducing the silt in the construction period of the encircling type port area has the obvious advantages that the design method for preventing and reducing the silt in the construction period of the encircling port area is achieved through comparison analysis of back-silting influence factors in the port area, and the design method is scientific in design, obvious in silt reducing effect and capable of coinciding with the comprehensive planning of the port area; the method for preventing and reducing the silt can solve the problem of spoil produced in silt coast development in the construction period of the encircling type port area, and can meet the basic requirement for ecological port construction in China. The design method for preventing and reducing the silt in the construction field of the encircling type port area is widely suitable for project planning design for preventing and reducing the silt of harbor basins and channels in the construction period of silt coast encircling type port areas.

Description

Technical field: [0001] The invention belongs to the technical field of port waterway engineering, in particular to a design method for silting prevention and reduction in the construction period of an encircling port area. Background technique: [0002] With the rapid development of my country's economic construction, the total volume of foreign trade has increased significantly, and the construction and development of port waterways are facing huge opportunities for development. At present, the coastline with good natural conditions has been fully developed, and the construction focus of port channel engineering has gradually shifted to muddy and silty coasts. However, when a port is built in an open sea area with muddy shoals, the wave action is obvious, and the movement of water and sand is complicated. It is necessary to arrange an encircling breakwater to achieve the purpose of preventing waves and sand, improving the stability of mooring conditions in the port, and re...

AI Technical Summary

Problems solved by technology

Generally speaking, the advantage of the large encirclement scheme is that it can be formed at one time and avoid repeated construction. Therefore, most muddy coasts adopt the encirclement method to build ports. 20 to 30 years, and the water area of ​​the port area in the early stage of development is relatively large, which will cause serious problems such as sedimentation in the harbor basin and channel in the port area. practical significance

[0003] At present, for ports on silty coasts, the more effective anti-silting and reducing silting method is to build sand-proof dikes, such as "a kind of sand-proof dike that can effectively reduce silt and reduce cross-flow at the mouth" proposed in Chinese patent application 201020294076.7. Although the scheme has the advantages of reducing silt and reducing cross-flow sand dikes at the mouth, there are still the following shortcomings. First, the scheme cannot be applied to the treatment of silt prevention and reduction in muddy coastal ports; The desilting effect is negligible

Chinese patent application 201110099166.X proposed "a new method for reducing silt in the sandy section of the estuary with large and medium tidal ranges". Due to the limitation of water and sand conditions, this method is difficult to apply to the anti-silting and reducing silting of muddy coastal ports

At present, there are few researches on anti-silting and reducing silting methods for harbor basins and waterways in muddy coastal ports, and the phenomenon of silting back in harbor basins and waterways during the construction period of the encircling port area is very serious. Therefore, a new type of anti-silting and reducing The method of silting has become an urgent task in the technical field of port waterway engineering

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