Prefabricated concrete stepped cross-block coastal erosion-resistant structure

Abstract

The invention provides an assembled concrete stepped cross-block coastal anti-erosion structure, which belongs to the field of coastal protection. In the transverse direction, the finger-joining teeth and finger-joining grooves of the lower step plate of the concrete stepped cross block are connected to each other, and a one-way transverse hole is formed at the bottom; Fittingly connected, a unidirectional vertical through hole is formed at the top; the vertical and horizontal connection of the concrete stepped cross blocks forms a staggered and connected sand accumulation hole whose horizontal projection is a rectangle. The effects and advantages of the invention are that the flow of sand from the coast to the sea is suppressed, and the sand that flows with the near-shore current is captured, thereby alleviating the erosion of the coast and helping to protect the coastal beaches; the technical design is reasonable and the operation is convenient; the use of industrial It can effectively reduce the amount of engineering and improve the construction efficiency, and the building materials after demolition can be recycled to avoid the waste of building materials.

Description

technical field [0001] The invention relates to the field of coastal protection, in particular to a prefabricated concrete stepped cross-block coastal anti-erosion structure. Background technique [0002] The coastal zone is located at the junction of the three zones of ocean, land and air. It is an extremely sensitive area. Under the influence of wind, waves, tides, currents and human activities, it is easy to cause the unbalance of the coastal sediment budget and lead to the retreat of the coastline. , beach erosion and a series of coastal erosion phenomena. [0003] For a long time, a series of human activities and unpredictable natural disasters have exacerbated the degree of coastal erosion. Relevant scholars have done a lot of work on the erosion phenomenon of different erosions, providing a scientific basis for the protection and restoration of coastal zones. This paper briefly describes and discusses the theoretical research on coastal erosion at home and abroad in ...

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Problems solved by technology

[0005] On the other hand, the sandy beach on the coast is not only in terms of environmental protection, but also thanks to the popularity of various marine leisure sports, and its importance as a tourist resource is also becoming prominent. The amount of sand flowing into the sea has been drastically reduced due to reasons such as blocking with concrete dikes, reduction of natural green space due to urban construction, and disappearance of coastal dunes due to landfills, resulting in the shrinking of coastal beaches.

[0006] Depending on the revetment method, waves push against the revetment and wash in front of the revetment, which cannot prevent sand loss

The method of man-made beach cultivation, where sand is artificially injected, not only requires a lot of cost for sand mining and transportation, but also is not a fundamental measure to prevent sand loss, so there is a burden of continuous sand supply

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