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Erosion coast plane compound type beach restoration method

A restoration method and a composite technology, applied in sea area engineering, water conservancy engineering, river regulation, etc., can solve problems such as the inability to dynamically adjust the severity of coastal erosion, reduce the net sediment transport rate along the coast, promote protection capabilities, and broaden the scope Effect

Active Publication Date: 2020-03-24
THIRD INST OF OCEANOGRAPHY MINIST OF NATURAL RESOURCES
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a flat compound beach repair method for eroded coasts, so as to solve the technical problem in the prior art that the maintenance of sand and gravel with a single particle size cannot realize dynamic adjustment for the severity of coastal erosion

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  • Erosion coast plane compound type beach restoration method
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  • Erosion coast plane compound type beach restoration method

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Embodiment Construction

[0031] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention provides an erosion coast plane compound type beach restoration method. The method comprises the following steps that a coastline is divided into a plurality of sub-units; effective wave-breaking wave height Hb and wave-breaking angles theta b in the sub-units are acquired; coastwise net sediment discharge rate of each sub-unit and the sand-gravel particle size of each sub-unit are calculated; and each sub-unit is filled with sand gravels according to the coastwise net sediment discharge rate and the sand-gravel particle size, and the sand gravels from a lower reach are carried to an upper reach periodically. According to the erosion coast plane compound type beach restoration method, the different coastwise net sediment discharge rates of a strong erosion coast section and aweak erosion coast section are fully considered, the whole coast is divided into the plurality of sub-units and is subjected to compound type design, the traditional beach maintenance range is broadened, and the method is equally applicable to areas with relatively severe coastal erosion, so that the improvement of the strong erosion coast protective capability and the improvement of the landscape effect are greatly promoted, and the purpose that the coastwise maintenance particle size is different, but the coastwise net sediment discharge rate is remarkably reduced is achieved.

Description

technical field [0001] The invention relates to the technical field of beach maintenance, in particular to a compound beach restoration method for eroded coast planes. Background technique [0002] At present, one-third of my country's coast has suffered or is suffering from coastal erosion. As an ecological "soft" protection, beach maintenance is gradually becoming a powerful tool to prevent and control coastal erosion. Domestic beach restoration often maintains the stability of the beach by constructing "static headlands", but this method is only suitable for coastal sections with a small net sand discharge rate, or requires the construction of a large number of "hard" ancillary works , such as building offshore breakwaters. The construction of these hard ancillary works will not only seriously affect the local landscape effect, but also change the local hydrodynamic conditions and have a greater impact on the marine ecological environment of the adjacent sea area. [0...

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Application Information

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IPC IPC(8): E02B3/02
CPCE02B3/02E02B3/023
Inventor 朱君蔡锋戚洪帅雷刚刘建辉郑吉祥曹惠美
Owner THIRD INST OF OCEANOGRAPHY MINIST OF NATURAL RESOURCES
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