Beach protection device
By designing a beach protection device including wave-wave boards, back-wave boards and truss bases, the existing coastal protection facilities are solved, and the beach is developed to the sea through wave action, forming a new beach contour line and increasing the beach area.
Patent Information
- Application Number
- CN202421722717.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-20
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-07-20
AI Technical Summary
The existing coastal protection facilities have high costs, great environmental impact and inability to effectively utilize wave effects, resulting in coastal degradation and ecosystem balance being affected.
Design a beach protection device, including wave-coated board, wave-coated board and truss base, to form a triangular structure, with the slope of the wave-coated board smaller than the wave-coated board, a reverse curved surface is set at the lowest point of the wave-coated board, and fixed to the seabed with anchors. The material can be made of concrete, metal or polymer materials.
The device is simple in structure, low-cost, easy to install, and is friendly to the coastal environment. It can develop the beach towards the sea through the role of the waves itself, form a new beach contour line, reduce the impact force and speed of the waves, promote sediment deposition, and increase the beach area.
Smart Images
Figure CN222961975U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coastal zone protection, and particularly relates to a beach protection device. Background Art
[0002] The coastal zone is an area affected by tidal fluctuations and wave scouring. Its existence provides important beach protection, reducing damage to coastal areas from sea waves, wind, and tides, and preventing disasters such as coastal floods. In addition, the coastal zone is an important biodiversity habitat where vegetation, animals, and marine life can obtain safe habitats. However, due to human activities, the amount of sediment coming from the land has decreased. Under the same action of sea waves and wind, the coastal zone is continuously degrading, threatening habitats, property safety, etc.
[0003] To ensure the safety of the coastal living environment, existing coastal zone protection facilities usually adopt measures such as raising and strengthening dikes, making the height of the dikes higher than the maximum height formed by waves on the shore, and using rigid measures to resist wave forces and protect the beach. However, these measures often require a large amount of manpower and material resources; at the same time, to avoid the failure of the bottom of the protection measures being hollowed out by waves, the foundation depth is often large, further increasing the investment. Moreover, the rigid revetment facilities used affect the water ecological environment.
[0004] In addition, there is also a way to maintain the stability of the coastal zone by "constructing breakwaters + artificial sand replenishment", but most breakwaters extend from the shoreline towards the sea. This not only has a high cost but also artificially blocks the lateral sediment transport along the coast, having a certain impact on the balance of the ecosystem. Content of the Utility Model
[0005] Aiming at the technical problem of the defects existing in the existing coastal zone protection facilities, a beach protection device of the utility model has a simple structure, low cost, easy installation, is friendly to the coastal environment, and can make the beach develop seaward through the action of waves itself, forming a new beach contour line.
[0006] The technical solution provided by the utility model is: a beach protection device, including a wave-facing plate, a wave-back plate, and a truss base; the wave-facing plate and the wave-back plate are both fixedly arranged on the truss base, the highest point of the height of the wave-facing plate is connected to the highest point of the height of the wave-back plate, so that the wave-facing plate, the wave-back plate, and the truss base form a triangular structure; the slope of the wave-facing plate is smaller than the slope of the wave-back plate; the lowest point of the height of the wave-facing plate is provided with an upwardly warped reverse curve surface.
[0007] Optionally, the slope of the wave-facing plate is less than or equal to 1:10.
[0008] Optionally, the highest height h of the reverse curve surface is 1 / 4 - 1 / 3 of the highest height H of the wave-facing plate.
[0009] Optionally, the reverse curved surface is a parabolic surface.
[0010] Optionally, the slope of the back wave plate is greater than or equal to 1:2.
[0011] Optionally, a plurality of anchor fittings are fixedly arranged at the bottom of the truss base, and the anchor fittings are arranged at intervals.
[0012] Optionally, the anchor fitting includes a first anchoring piece and a second anchoring piece. The first anchoring piece is inclined towards the reverse curved surface, the second anchoring piece is inclined away from the reverse curved surface, and the first anchoring piece and the second anchoring piece are arranged alternately.
[0013] Optionally, there is a cavity inside the triangular structure formed by the wave-facing plate, the back wave plate and the truss base. The cavity is filled with fillers, and there are gaps between the fillers.
[0014] Optionally, the materials used for the wave-facing plate, the back wave plate and the truss base include concrete, metal materials or polymer materials.
[0015] Advantageous Effects
[0016] Adopting the technical solution provided by the present utility model, compared with the prior art, it has the following advantageous effects: A beach protection device in this embodiment has a simple structure, low cost, is easy to install, is friendly to the coastal environment, can conform to the natural beach wave movement, reduce the wave impact force and speed, and can make the beach develop seaward through the action of the waves themselves, forming a new beach contour line. Description of the Drawings
[0017] Figure 1 It is a schematic structural diagram of a beach protection device proposed by an embodiment of the present utility model.
[0018] Figure 2 It is a cross-sectional view of a beach protection device proposed by an embodiment of the present utility model.
[0019] Figure 3 It is a schematic layout diagram of a beach protection device proposed by an embodiment of the present utility model. Detailed Embodiments
[0020] To further understand the content of the present utility model, the present utility model will be described in detail in combination with the drawings and embodiments.
[0021] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than limiting the utility model. Additionally, it should be noted that for the convenience of description, only the parts related to the utility model are shown in the drawings. The terms such as "first" and "second" in the present utility model are set for the convenience of describing the technical solution of the present utility model, and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present utility model. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions without contradiction or conflict, and all are within the scope of protection required by the present utility model.
[0022] Embodiment 1
[0023] Combined with the attached Figures 1-3 , this embodiment proposes a beach protection device, including a wave-facing plate 10, a wave-back plate 20, and a truss base 30; the wave-facing plate 10 and the wave-back plate 20 are both fixedly arranged on the truss base 30, and the highest point of the height of the wave-facing plate 10 is connected to the highest point of the height of the wave-back plate 20, so that the wave-facing plate 10, the wave-back plate 20, and the truss base 30 form a triangular structure; the slope of the wave-facing plate 10 is smaller than the slope of the wave-back plate 20; the lowest point of the height of the wave-facing plate 10 is provided with an upwardly warped reverse curve 101.
[0024] The beach protection device of this embodiment has a simple structure, low cost, easy installation, is friendly to the coastal environment, can conform to the natural beach wave movement, reduce the wave impact force and speed, and can make the beach develop seaward through the action of the waves themselves, forming a new beach contour line.
[0025] The beach protection device of this embodiment is generally installed in the low tide line area and is developed according to the wave motion characteristics. It forms a stable triangular structure through the wave-facing board 10, the wave-back board 20, and the truss base 30. The top elevation of the beach protection device, that is, the top elevation of this triangular structure, is consistent with the low tide line.
[0026] It should be noted that the "low tide line" is a professional term in the marine field and can be referred to in the "United Nations Convention on the Law of the Sea". The "low tide line" refers to: in the process of ebb and flow, the boundary where the sea surface coincides with the land when the sea level drops to the still tide.
[0027] In this embodiment, at least part of the truss base 30 is buried in the seabed at a certain distance from the eroded beach to ensure that the overall beach protection device will not be displaced under the impact of waves.
[0028] In this embodiment, the wave-facing board 10 has a gentle slope, and the wave-back board 20 has a steep slope. The wave-facing board 10 faces the ocean direction, simulating a natural beach and receiving the frontal impact force of the waves. The wave-back board 20 faces the land direction, used to weaken the flow velocity when the waves return and intercept the sediment in the water body.
[0029] The general working principle of the beach protection device of this embodiment is: when the waves travel towards the coast, the waves first gradually climb along the wave-facing board 10. Due to the small slope of the wave-facing board 10, affected by the wave-facing board 10, when the waves climb on the wave-facing board 10, the wave energy can be gradually dissipated, the flow velocity and kinetic energy of the waves gradually decrease, and the wave impact force also gradually decreases, causing the large particle sediment carried in the water body to deposit in the area near the wave-facing board 10. The waves continue to climb along the wave-facing board 10, cross the highest position of the device top, enter the area of the wave-back board 20, until they lose the kinetic energy to continue climbing along the beach, and then the waves start to return to the ocean. Due to the large slope of the wave-back board 20, the resistance to the return of the waves increases, a backwater can be formed in the area of the wave-back board 20, the flow velocity drops sharply, and a large amount of sediment deposits in the area of the wave-back board 20 and its upstream area. It should be noted that the upstream and downstream in this article are also relative concepts. The direction towards the coast is the upstream, and the direction towards the ocean is the downstream.
[0030] In addition, an upwardly curved surface 101 is provided at the lowest part of the height of the wave-facing board 10. When the waves descend along the wave-facing board 10, the curved surface 101 makes the waves form a jet flow, reducing the descending flow velocity of the waves and further promoting the sediment deposition.
[0031] Thus, through the influence of the beach protection device on wave dynamics, the originally eroded coastline is replenished with sediment, the shoreline profile gradually extends seaward, and the beach area is expanded.
[0032] It is conceivable that the wave-facing board 10, the wave-back board 20, and the truss base 30 should have salt resistance and corrosion resistance. Therefore, the preferably used materials include concrete, metal materials, or polymer materials.
[0033] Based on the structure of the beach protection device, there will be a cavity 33 inside the triangular structure formed by the wave-facing board 10, the wave-back board 20, and the truss base 30 to save the amount of materials used. Fillers such as waste tires or large-sized rubble can be filled in the cavity 33. There are naturally gaps between the fillers, which can thus provide a shelter space for fish.
[0034] Combined with the foregoing principle description, the wave-facing board 10 needs to be set with a relatively gentle slope to simulate the slope of a natural beach. Therefore, in a preferred embodiment, the slope is less than or equal to 1:10, which helps the waves to climb up along the wave-facing board 10. And if the slope is too high, it is not conducive to fish swimming against the slope upward.
[0035] Moreover, in other preferred embodiments, the reverse curved surface 101 is preferably a parabolic surface, that is, the cross-sectional line of the reverse curved surface 101 is in a parabolic shape to effectively form a flow diversion. In addition, the highest height h of the reverse curved surface 101 is 1 / 4 to 1 / 3 of the highest height H of the wave-facing board 10. This value is the value for flow diversion design in the field of hydrodynamics, which can make the waves form a flow diversion, effectively reduce the downward flow velocity of the waves, and further promote the deposition of sediment.
[0036] In another preferred embodiment, the slope of the wave-back board 20 is greater than or equal to 1:2. The reason is that if the slope of the wave-back board 20 is too small or too gentle, the effect of intercepting the backflow sediment is poor; if the slope is too large or too steep, the thrust of the waves on the overall device is relatively large, which is not conducive to the stability of the overall device.
[0037] In other embodiments, a number of anchor fittings are fixedly arranged at the bottom of the truss base 30. The anchor fittings are arranged at intervals and can be inserted into the seabed to ensure the stability of the overall device. In an alternative embodiment, the anchor fittings include a first anchor plate 31 and a second anchor plate 32. The first anchor plate 31 is inclined towards the direction of the reverse curved surface 101, and the second anchor plate 32 is inclined towards the direction away from the reverse curved surface 101. The first anchor plate 31 and the second anchor plate 32 are arranged alternately. Thus, the first anchor plate 31 can be obliquely inserted into the seabed towards the sea, and the second anchor plate 32 can be obliquely inserted into the seabed towards the land. The first anchor plate 31 and the second anchor plate 32 are inserted into the seabed in different directions, so that the beach protection device can fix its own position well. More preferably, considering the wave scouring, the depth of insertion of the first anchor plate 31 and the second anchor plate 32 into the seabed needs to be greater than or equal to the maximum wave scouring depth.
[0038] It can be conceived that when a beach protection device in this embodiment is specifically applied, multiple beach protection devices can be selected according to the length of beach erosion, and multiple beach protection devices can be combined and installed; adjacent beach protection devices can be bound by steel wires to increase the overall stability. Preferably, the width of the beach protection device can be 10 m.
[0039] Combined with the attached Figure 3 , an application case of a beach protection device is exemplified. In the figure, the typical water level lines of the coastal zone, the low tide line and the high tide line are marked. The typical coastal zone terrain includes the sandbar, erosion gully, beach and land in the figure. If the beach protection device is not installed, due to the lack of sediment source supply from the land, under the action of wave scouring, the erosion gully will gradually move towards the land, resulting in the collapse of the land slope and the reduction of the beach area.
[0040] If the beach protection device is installed in the low tide line area, that is, the elevation of the beach protection device is basically the same as that of the low tide line. At this time, the sediment carried by the waves gradually accumulates in the upstream and downstream areas of the beach protection device, causing the new erosion gully and sandbar to move seaward to the downstream area of the beach protection device, and a new beach is formed in the upstream area of the beach protection device, thereby increasing the beach area and stabilizing the beach contour. It should be noted that the "high tide line" in this article refers to the boundary where the sea water surface meets the coastal land when the tide rises to high tide.
[0041] In summary, a beach protection device in this embodiment ensures its own stability based on its own triangular structure. By setting the gentle wave-facing plate 10 and the steep wave-backing plate 20, when the waves travel towards the beach, it can simulate the natural beach slope, and promote the sediment carried by the waves to deposit in the area of the beach protection device without affecting the original movement law of the waves; when the waves retreat back to the ocean, it can intercept the sediment in the water body again, and finally realize the increase of the beach area and the stability of the beach contour.
[0042] The above schematically describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the creative purpose of the present invention, they shall fall within the protection scope of the present invention.
Claims
1. A beach protection device, characterized in that: It comprises a wave-facing board, a wave-back board and a truss base; the wave-facing board and the wave-back board are both fixedly arranged on the truss base, and the highest point of the wave-facing board is connected with the highest point of the wave-back board, so that the wave-facing board, the wave-back board and the truss base form a triangular structure; The slope of the wave-facing board is smaller than that of the wave-receiving board; and an upwardly curved reverse surface is arranged at the lowest height of the wave-facing board.
2. A beach protection device according to claim 1, characterized in that: The slope of the wave board is less than or equal to 1:
10.
3. A beach protection device according to claim 1, characterized in that: The highest height h of the reverse curved surface is 1 / 4 to 1 / 3 of the highest height H of the wave-facing plate.
4. A beach protection device according to claim 1, characterized in that: The inverse curved surface is a parabola.
5. A beach protection device according to claim 1, characterized in that: The slope of the back wave board is greater than or equal to 1:
2.
6. A beach protection device according to claim 1, characterized in that: A plurality of anchors are fixedly arranged at the bottom of the truss base, and the anchors are arranged at intervals.
7. A beach protection device according to claim 6, characterized in that: The anchoring piece comprises a first anchoring piece and a second anchoring piece, wherein the first anchoring piece is arranged obliquely in the direction of the reverse curved surface, and the second anchoring piece is arranged obliquely in the direction away from the reverse curved surface, and the first anchoring piece and the second anchoring piece are arranged alternately.
8. A beach protection device according to claim 1, characterized in that: There is a cavity in the triangular structure formed by the wave-facing board, the wave-receiving board and the truss base, and the cavity is filled with fillers, and there are gaps between the fillers.
9. A beach protection device according to any one of claims 1 to 8, characterized in that: The materials used for the wave-facing board, the wave-receiving board and the truss base include concrete, metal materials or polymer materials.