Maintenance design method for deeply-eroded exposed coast beach

A design method and strong erosion technology, applied in calculation, marine engineering, instruments, etc., can solve problems such as failure to restore sandy coast properties, failure to achieve shore section repair, and continuous intensification of coastal erosion, and achieve good protection effect and adaptability. , Avoid the effect of dry beach elevation reduction, good energy consumption effect

Active Publication Date: 2018-08-14
THIRD INST OF OCEANOGRAPHY MINIST OF NATURAL RESOURCES
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Problems solved by technology

However, due to long-term damage to the coast by human activities, coastal erosion in many sections continues to intensify, resulting in irreversible damage
Due to changes in the dynamic environment and sand mining in offshore and intertidal zones, many erosion

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  • Maintenance design method for deeply-eroded exposed coast beach
  • Maintenance design method for deeply-eroded exposed coast beach
  • Maintenance design method for deeply-eroded exposed coast beach

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Embodiment Construction

[0017] The technical scheme that the present invention takes is as follows:

[0018] A beach maintenance design method for a strongly eroded bare shore section, which mainly includes the following design steps:

[0019] (1) Analyze the hydrodynamic conditions of the restoration project area to obtain the dynamic environment parameters required for beach maintenance design.

[0020] (2) Based on the beach stability requirements, analyze the transport of gravel beaches and determine the particle size requirements for filling gravel.

[0021] (3) Consider the restoration function and landscape requirements, and determine the relevant morphological parameters of gravel beach restoration.

[0022] (4) Considering the filling dynamic environment, gravel particle size and beach section shape comprehensively, put forward the filling requirements and layered section structure.

[0023] The described method for beach maintenance design of a strongly eroded bare shore section is a meth...

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Abstract

The invention discloses a maintenance design method for a deeply-eroded exposed coast beach, is applicable to the repair and treatment of a damaged coast, relates to the technical field of coastal zone ecological restoration, and solves the problems that the sandy coast property of a deeply-eroded coast cannot be recovered, and a conventional sand supplementing and maintenance manner cannot restore the deeply-eroded coast. The method has the advantages that a layered structure method using gravels as the filler, the filling structure is a three-layer mixed section structure formed by a beach face energy dissipation layer, a permeation cushion layer and a base layer, and the three filler layers cover sequentially from top to bottom; a profile form is a broken line, the upper portion is a horizontal dry beach part, the elevation H0 of the dry beach part is 100cm above a local design high water level, the width B0 of the dry beach part is 10-20m, the lower portion is an intertidal zone with uniform gradient, and the gradient is 1:5; the protecting function of the beach can be rebuilt, the permeability of the beach is improved, costal sediment transport speed is lowered, coast stability is increased, and a coastal landscape effect is improved.

Description

technical field [0001] The invention relates to a beach maintenance design method for a strongly eroded bare shore section. Background technique [0002] Nearly half of the sandy coasts in my country are eroded, so a large number of embankment projects have been built to resist, and the continuous coastline erosion can be prevented by fixing the coastline. However, this kind of hard engineering of "bank protection but not beach protection" has caused continuous erosion and damage to the intertidal beach, with partial or even complete exposure. In recent decades, beach maintenance has been widely promoted and applied as a sandy coast soft protection technology. This technology artificially replenishes sediments to a certain design elevation position, widens the beach or shoal to the sea, and improves and restores the beach. Function, beach maintenance conforms to the law of coastal topography and landform evolution, and compensates for the negative impact of human activities...

Claims

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Application Information

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IPC IPC(8): G06F17/50E02B3/04
CPCE02B3/04G06F30/13Y02A10/11
Inventor 戚洪帅蔡峰雷刚刘建辉郑吉祥朱君曹惠美
Owner THIRD INST OF OCEANOGRAPHY MINIST OF NATURAL RESOURCES
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