Beach protection piece and beach protection structure

Abstract

The utility model belongs to the technical field of island reef ecology, and discloses a beach protection piece and a beach protection structure. According to the beach protection piece provided by the utility model, the silt carried in the reciprocating flow can be deposited in the deposition cavity and deposited on the beach through the deposition cavity defined by the silt falling surface of the wave dissipation part and the enclosure bulkhead, so that the beach is prevented from being eroded; the outer side face of the enclosure bulkhead gradually inclines in the direction away from the deposition cavity from top to bottom to form a flow guide face, so that the scouring direction of reciprocating flow is changed to prevent and dissipate waves, and climbing and wave overtopping are reduced; and the siltation promotion and sand stabilization effects can be improved through the sand stabilization part convexly arranged at the top of the silt falling surface so as to protect the beach and fix the bank. According to the beach protection structure, the multiple beach protection pieces are spliced together, so that a flow channel capable of changing the washing direction of reciprocating flow is formed, and wave prevention, wave dissipation, siltation promotion and sand fixation can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of island and reef ecology, in particular to a beach protection piece and a beach protection structure. Background Art

[0002] The currents generated by waves and tides are cyclical, reciprocating flows that carry sediment. Whether on natural island reef shores or artificial shores formed by landfill, the long-term erosion of these reciprocating flows will inevitably lead to erosion and damage. On pristine shores, this is primarily manifested by the disappearance of sand dunes, the collapse of sandbanks, the loss of gravel, and the gradual increase in the number of beaches where vegetation is damaged. On artificial shores, the use of steep, rigid embankments intensifies the wave dynamics in front of the embankments, leading not only to severe erosion at the embankment foot and instability of the foundation, but also to increased erosion and sediment loss, ultimately leading to beach retreat. Therefore, promoting siltation and sand fixation on island reef shores is beneficial for beach protection and shore strengthening.

[0003] In the existing technology, hollow three-dimensional structures with undulating surfaces, such as four-corner hollow blocks and fence boards, are often used as breakwaters, revetments and other structures to achieve the purpose of wave protection, wave elimination and reducing the height of waves. However, they basically do not have the function of promoting siltation and sand fixation, and are therefore difficult to use on island reefs and beaches for beach protection and bank consolidation.

[0004] Therefore, there is an urgent need for a beach protection member and a beach protection structure to reduce the scouring of the reciprocating flow on the beach and enable the silt carried by the reciprocating flow to be deposited on the beach, thereby promoting siltation and sand consolidation to protect the beach and shore. Utility Model Content

[0005] The purpose of the utility model is to provide a beach protection member and a beach protection structure, which can deposit the silt carried by the reciprocating flow on the beach, thereby promoting siltation and sand consolidation to protect the beach and shore.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] In a first aspect, a beach protection device is provided, comprising:

[0008] The wave dissipation part includes a silt-collecting surface and a surrounding wall arranged around the silt-collecting surface. A silt-collecting cavity is formed between the silt-collecting surface and the surrounding wall. The outer side surface of the surrounding wall is gradually inclined from top to bottom away from the silt-collecting cavity to form a diversion surface.

[0009] The sand-fixing part is convexly arranged on the top of the siltation surface and is located on the side close to the scouring direction of the upwash flow.

[0010] Preferably, a sand retaining surface is formed on the side of the sand fixing portion facing away from the scouring direction of the upward flow, and the sand retaining surface is gradually inclined from top to bottom toward the side close to the scouring direction of the upward flow.

[0011] Preferably, a wave-breaking surface is formed on the side of the sand-fixing portion facing away from the siltation cavity, and the wave-breaking surface is parallel to the diversion surface.

[0012] Preferably, a wave-dissipating surface is formed on the side of the sand-fixing part facing away from the sedimentation cavity, and the wave-dissipating surface is arranged at an angle to the diversion surface.

[0013] Preferably, a water discharge hole communicating with the sedimentation cavity is formed on the surrounding wall, and a water permeable member is laid on the side of the sedimentation cavity with respect to the water discharge hole.

[0014] Preferably, the wave-dissipating part is a table-like structure.

[0015] Preferably, the beach protection member further includes a splicing part arranged on the shore beach. The wave-dissipating part is connected to the top of the splicing part, and the splicing part of one beach protection member can be spliced with the splicing part of the adjacent beach protection member.

[0016] Preferably, the outer side wall of the splicing part is provided with interlocking teeth.

[0017] In a second aspect, a beach protection structure is provided, which is formed by splicing a plurality of the above-mentioned beach protection members, and a flow channel allowing the reciprocating flow to pass through is formed between the diversion surfaces of two adjacent beach protection members.

[0018] Preferably, a plurality of beach protection members are arranged in an M×N array, and the first flow channel formed by splicing one row of adjacent two rows of beach protection members is arranged staggeredly with the second flow channel formed by splicing the other row.

[0019] Advantages of the present utility model:

[0020] For the beach protection member provided by the present utility model, the sedimentation cavity formed by enclosing between the sedimentation surface of the wave-dissipating part and the surrounding wall enables the sediment carried by the reciprocating flow to be deposited in the sedimentation cavity. As time goes by, the sediment deposition amount continuously increases until the sedimentation cavity is filled, and then the sedimentation range gradually extends upward to the shore beach, so that the sedimentation width and thickness on the shore beach are continuously enlarged, thereby preventing the shore beach from erosion and retreat. By making the outer side surface of the surrounding wall gradually tilt away from the sedimentation cavity from top to bottom to form a diversion surface, the scouring of reciprocating flows in different directions (positive waves, oblique waves) can be adapted and the scouring direction of the waves can be changed, and the kinetic energy of the uprush flow can be consumed, so as to achieve the effects of dissipating waves and smoothing the water flow, and correspondingly improving the sediment promotion effect; through the wave-dissipating and sand-fixing part protruding from the top of the sand-fixing part, the kinetic energy of the uprush flow is dissipated, the scouring direction of the backflow is changed and the backflow is blocked, so that the sediment carried by the backflow is deposited in the sedimentation cavity.

[0021] The present utility model also provides a beach protection structure. By splicing the above-mentioned several beach protection components together and placing them on the shore beach, a flow channel is formed to change the scouring directions of the uprush flow and the backflow, which can reduce waves, smooth the water flow, and correspondingly improve the sediment siltation effect. The siltation promotion parts of the beach protection components spliced into the beach protection structure are distributed in a staggered manner in a "fish scale" shape on the shore beach, and the siltation cavity, the flow guiding surface, and the wave dissipating surface form a composite "concave down and convex up" wave prevention and wave dissipation structure, so as to promote siltation and fix sand to protect the beach and shore. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the beach protection structure provided by Embodiment 1 of the present utility model;

[0023] Figure 2 is a schematic structural diagram of the beach protection component provided by Embodiment 1 of the present utility model;

[0024] Figure 3 is Figure 2 a sectional view of

[0025] Figure 4 is a schematic structural diagram of the beach protection component provided by Embodiment 2 of the present utility model;

[0026] Figure 5 is a schematic structural diagram of the beach protection component provided by Embodiment 3 of the present utility model.

[0027] In the figure:

[0028] 1. Wave dissipating part; 11. Siltation surface; 12. Enclosing wall; 121. Drainage hole; 122. Flow guiding surface; 101. Siltation cavity;

[0029] 2. Sand fixing part; 21. Sand retaining surface; 22. Wave dissipating surface;

[0030] 3. Flow channel; 31. First flow channel; 32. Second flow channel;

[0031] 4. Splicing part; 41. Splicing surface; 411. Interlocking teeth; 412. Ecological groove; 401. Vegetation cavity. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following further describes the present utility model in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that, for the sake of description, only parts related to the present utility model are shown in the drawings, rather than all the structures.

[0033] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. 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.

[0034] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0035] In the description of this embodiment, the orientation or positional relationship terms such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component 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" and "second" are only used for distinction in description and do not have special meanings.

[0036] When the reciprocating flow rushes onto the beach, it is called the uprush flow, and when it returns to the sea water, it is called the backwash flow. Maintaining the beach sedimentation without erosion and recession is the key to protecting the beach and stabilizing the shore. To solve the above problems, the present utility model provides a beach protection structure composed of a plurality of beach protection members spliced together. It is arranged on the beach to effectively reduce waves, smooth the water flow, and deposit the sediment carried by the backwash flow on the beach, while preventing the sediment on the beach from being carried back into the sea by the backwash flow, thereby promoting sedimentation and sand fixation to protect the beach and stabilize the shore. The following introduces the beach protection members provided by the present utility model in detail through multiple embodiments.

[0037] Embodiment 1

[0038] Figure 1 shows the structural schematic diagram of the beach protection structure provided by Embodiment 1 of the present utility model, Figure 2 shows the structural schematic diagram of the beach protection member provided by Embodiment 1 of the present utility model. As Figures 1 to 2As shown in the figure, the beach protection member provided in the first embodiment of the present invention includes a wave dissipation part 1 and a sand fixation part 2. The wave dissipation part 1 includes a siltation surface 11 and a surrounding wall 12 surrounding the periphery of the siltation surface 11. A siltation cavity 101 is formed by surrounding between the siltation surface 11 and the surrounding wall 12. The outer side surface of the surrounding wall 12 is gradually inclined away from the siltation cavity 101 from top to bottom to form a diversion surface 122. The sand fixation part 2 protrudes from the top of the siltation surface 11 and is located on the side close to the scouring direction of the uprush flow.

[0039] For the beach protection member provided in the first embodiment of the present invention, by setting the siltation cavity 101, when the backflow passes through the beach protection member, it can rush onto the siltation surface 11 and enter the siltation cavity 101. Therefore, the sediment carried by the backflow can enter the siltation cavity 101 and silt therein. As time goes on, the sediment siltation amount continuously increases until the siltation cavity 101 is filled, and then the sediment siltation range gradually extends towards the upper part of the shore beach, so that the siltation width and thickness on the shore beach continuously expand, thereby preventing the erosion and recession of the shore beach; by setting the diversion surface 122 on the surrounding wall 12, when the uprush flows of reciprocating flows in different directions (positive waves, oblique waves) scour the diversion surface 122, the inclined diversion surface 122 can change the flow direction of the uprush flow, and through refraction and diffraction effects, dissipate the kinetic energy possessed by the uprush flow, thereby preventing waves, dissipating waves, and reducing the overtopping height; by setting the sand fixation part 2, on the one hand, it further dissipates the kinetic energy possessed by the uprush flow, and on the other hand, it can also hinder the flow of the backflow, forcing the backflow to enter the siltation cavity 101, so that the sediment carried by the backflow can enter the siltation cavity 101 and silt therein, thereby improving the siltation and sand fixation effect of the beach protection member.

[0040] Optionally, the wave-dissipating part 1 is in a table-like structure, and the outer surface of the table-like structure forms the above-mentioned flow guiding surface 122, which has a simple structure and is convenient for processing. In the first embodiment provided by the present utility model, the wave-dissipating part 1 is in a frustum-like structure, that is, the wave-dissipating part 1 has a plurality of flow guiding surfaces 122 connected to each other, so that when the beach protection members are spliced to form a beach protection structure, a flow channel 3 that can allow the reciprocating flow to pass through can be correspondingly formed between the flow guiding surfaces 122 of two adjacent beach protection members. The first embodiment provided by the present utility model does not limit the specific number of edges of the frustum-like wave-dissipating part 1, and it can be but not limited to a quadrangular frustum, a hexagonal frustum, an octagonal frustum, etc. To further improve the wave prevention, wave dissipation and siltation and sand fixation effects of the beach protection structure, in the first embodiment provided by the present utility model, a number of the above-mentioned beach protection members are arranged in an M×N array, and the first flow channel 31 formed by splicing one row of adjacent two rows of beach protection members is staggered with the second flow channel 32 formed by splicing the other row. With this setting method, when the uprush flow passes through each row of beach protection members in turn, the beach protection members in the lower row can change the flow direction of the uprush flow, so that the uprush flow changes the scouring direction during the flow and enters the flow channel 3. By analogy, the uprush flow continuously changes the flow direction along with the extension direction of each row of flow channels 3, so as to continuously dissipate the kinetic energy of the uprush flow, and then realize the functions of wave prevention, wave dissipation and reduction of overtopping. The sediment carried by the backflow can be silted up in the siltation cavity 101 it passes through. As time goes by, the amount of siltation continuously increases until it is filled, and then the siltation range gradually extends towards the upper part of the beach, so that the siltation width and thickness on the beach continuously expand, thereby preventing the erosion and retreat of the beach. Further, the sand fixation parts 2 of a number of beach protection members are distributed in a staggered manner in a "fish scale" shape on the beach, and the siltation cavity 101, the flow guiding surface 122 and the wave-dissipating surface 22 form a compound "concave down and convex up" wave prevention and dissipation structure, which can further enhance the wave-breaking and wave-dissipating effects and improve the wave prevention, wave dissipation and siltation and sand fixation effects of the beach. Through the complementary and superposed interaction of the structures and functions of the flow guiding surface 122, the siltation cavity 101 and the sand fixation part 2, significant wave prevention, wave dissipation and siltation and beach fixation effects are produced.

[0041] It should be noted that the beach protection member provided in the first embodiment of the present utility model does not limit the height of the wave-dissipating part 1, the inclination degree and height of the flow guiding surface 122, and the height and shape of the sand fixation part 2. Designers can carry out parameter design according to relevant factors such as the topography, geology, geomorphology and hydrodynamic environment of the beach, and will not be elaborated here one by one.

[0042] In some embodiments, to facilitate the sediment carried by the backflow to be silted up in the siltation cavity 101 as soon as possible, a water discharge hole 121 communicating with the siltation cavity 101 is opened on the surrounding wall 12, so that when the backflow enters the siltation cavity 101, the backflow can flow out of the water discharge hole 121 as soon as possible, and a water permeable member is laid on one side of the water discharge hole 121 relative to the siltation cavity 101 to prevent the sediment carried by the backflow in the siltation cavity 101 from flowing out of the water discharge hole 121.

[0043] Figure 3 yes Figure 2 A cross-sectional diagram of Figures 1 to 3 As shown, the side of the sand-fixing part 2 that is away from the scouring direction of the upward flow forms a sand retaining surface 21, and the sand retaining surface 21 gradually tilts from top to bottom toward the side close to the upward flow direction, thereby being able to block the backflow passing through the silt-falling surface 11, forcing it to flow into the siltation cavity 101, so that the silt carried by the backflow enters the siltation cavity 101 and accumulates therein, thereby improving the siltation-promoting and sand-fixing effect of the beach protection piece. Specifically, the sand retaining surface 21 is set at an acute angle to the silt-falling surface 11, preferably at 20° to 50°. For example, the angle between the sand retaining surface 21 and the silt-falling surface 11 can be 25°, 30°, 35°, 40°, 45° or 50°, etc. The beach protection piece provided in Example 1 of the present invention does not limit the angle between the sand retaining surface 21 and the silt-falling surface 11, and designers can adjust the above angle according to actual needs.

[0044] Continue as Figures 1 to 3 As shown, the side of the sand-fixing portion 2 facing away from the siltation chamber 101 forms a wave-breaking surface 22, which is parallel to the diversion surface 122. The provision of the wave-breaking surface 22 is equivalent to increasing the height of the diversion surface 122. On the one hand, the beach protection member can enhance the refraction and diffraction effects on the upwash flow. On the other hand, it can allow the upwash flow reaching the diversion surface 122 to continue to climb along the extension direction of the wave-breaking surface 22, thereby further dissipating the kinetic energy of the upwash flow, thereby enhancing the wave-breaking and wave-breaking functions.

[0045] Continue as Figures 1 to 3 As shown, the beach protection piece also includes a splicing portion 4, which is arranged on the beach, and the wave-breaking portion 1 is connected to the top of the splicing portion 4. The splicing portion 4 of one beach protection piece can be spliced with the splicing portion 4 of the adjacent beach protection piece to form a stable beach protection structure.

[0046] Optionally, a vegetation cavity 401 connected to the siltation cavity 101 is provided in the splicing portion 4. Aquatic plants can be pre-planted in the vegetation cavity 401, and the root system of the aquatic plants further plays a role in consolidating the silt. In addition, when the reciprocating flow passes through the siltation cavity 101, it will not cause a significant impact on the aquatic plants in the vegetation cavity 401, thereby providing a stable living space for the aquatic plants in the vegetation cavity 401. In particular, during the seedling stage of the aquatic plants, they will not be destroyed by the scouring of the reciprocating flow or be carried out of the vegetation cavity 401 by the reciprocating flow. Therefore, the aquatic plants can grow stably in the vegetation cavity 401. After they reach maturity, they can exert their ecological silt-fixing and sand-fixing characteristics through their well-developed root systems to protect the beach and shore.

[0047] In the revetment component provided in the first embodiment of the present utility model, the splicing part 4 is a hexagonal prism, that is, the cross-sectional shape of the splicing part 4 is a hexagon, so that adjacent revetment components can be seamlessly spliced, and staggered flow channels 3 are formed between adjacent two rows of revetment components. In addition, a splicing surface 41 is formed on the outer surface of the splicing part 4, and the splicing surface 41 is arranged perpendicular to the shore beach, and the splicing surfaces 41 of adjacent revetment components are in contact with each other, so as to increase the contact area between adjacent revetment components and improve the stability of the revetment structure. Of course, the shape of the splicing part 4 is not limited in this embodiment, and designers can adjust its shape according to actual situations.

[0048] In some embodiments, vegetation materials are also placed in the vegetation cavity 401 to create a growth environment for aquatic plants and improve the effect of ecological revetment and shore protection.

[0049] When the revetment structure is placed on the shore beach, an ecological groove 412 communicating with the vegetation cavity 401 is opened on the side wall of the splicing part 4 of the revetment component, and the ecological grooves 412 on the mutually corresponding and fitting revetment components communicate with each other, so that all the vegetation cavities 401 of the revetment structure can be connected as a whole, and then the internal aquatic plant environment of the whole revetment structure is connected. In addition, the rhizomes of the aquatic plants in the vegetation cavity 401 can also spread to the adjacent vegetation cavities 401 through the ecological grooves 412, so that aquatic plants can also grow in some vegetation cavities 401 that originally cannot meet the growth requirements of aquatic plants due to environmental factors or human factors, further improving the effect of ecological revetment and shore protection.

[0050] It can be understood that after the revetment components are spliced to form a revetment structure and placed on the shore beach, due to external forces such as uneven settlement and wave impact, the spatial position of the revetment components may change, and it is easy for the adjacent two splicing surfaces 41 to be misaligned and no longer correspond and fit, thus destroying the integrity and overall stability of the flow channel 3. To solve the above technical problems, interlocking teeth 411 are provided on the outer side wall of the splicing part 4, and the adjacent two splicing surfaces 41 are fitted with each other through the interlocking teeth 411 to increase the friction force, thereby preventing the spatial position of the revetment component from changing.

[0051] Embodiment Two

[0052] This embodiment provides a revetment component, which has a structure substantially the same as that of the revetment component in the first embodiment. The difference is that in the first embodiment, when the uprush flow scours the revetment component on the side of the revetment structure close to the uprush flow scouring direction, some of the water bodies scoured to the wave-dissipating surface 22 may directly pass through the wave-dissipating surface 22 and enter the siltation cavity 101. Although it is beneficial for the sediment carried by the uprush flow to silt in the siltation cavity 101, some of the uprush flow that should have been refracted and diffracted and entered the flow channel 3 will no longer have its scouring direction changed by the flow channel 3, thus correspondingly reducing the wave-dissipating and wave-absorbing effect of the revetment structure. Figure 4The structure diagram of the beach protection member provided by the second embodiment of the present utility model is shown as follows: Figure 4 Combine Figure 2 As shown, a wave-breaking surface 22 is formed on the side of the sand-fixing portion 2 facing away from the siltation chamber 101. The wave-breaking surface 22 is arranged at an angle to the guide surface 122, so that the upwash can be blocked by the wave-breaking surface 22, forcing the upwash to be refracted and diffracted by the guide surface 122 and change the scouring direction and enter the flow channel 3, thereby improving the wave-breaking and wave-breaking effects of the beach protection structure.

[0053] Example 3

[0054] This embodiment provides a beach protection member, which has a substantially similar structure to that of the beach protection member in the first embodiment, except that the shape of the wave-breaking portion 1 is different.

[0055] like Figure 5 As shown, the wave-breaking portion 1 is a truncated cone structure, which only includes a guide surface 122. By utilizing the smooth characteristics of the circumferential surface, the guide surface 122 can better play the role of refraction and diffraction to change the scouring direction of the upwash flow and enhance the wave-breaking and wave-breaking function of the beach protection structure.

[0056] Optionally, the outer peripheral surface of the sand fixation part 2 is an arc-shaped surface with the same curvature and the same extension direction as the outer peripheral surface of the wave-breaking part 1. While ensuring that the entire beach protection structure has good wave-breaking and wave-breaking functions, it can facilitate the processing and manufacturing of the entire beach protection part and reduce processing costs.

[0057] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to provide an exhaustive list of all possible embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A beach protection component, characterized in that, Comprising: The wave-dissipating part (1) includes a siltation surface (11) and a surrounding wall (12) surrounding the periphery of the siltation surface (11). An accumulation cavity (101) is formed by surrounding between the siltation surface (11) and the surrounding wall (12). The outer side surface of the surrounding wall (12) is gradually inclined away from the accumulation cavity (101) from top to bottom to form a diversion surface (122); The sand-fixing part (2) protrudes from the top of the siltation surface (11) and is located on the side close to the scouring direction of the uprush current.

2. The beach protection member according to claim 1, wherein A sand-blocking surface (21) is formed on the side of the sand-fixing part (2) facing away from the scouring direction of the uprush current. The sand-blocking surface (21) is gradually inclined towards the side close to the scouring direction of the uprush current from top to bottom.

3. The beach protection member according to claim 1, characterized in that, A wave-dissipating surface (22) is formed on the side of the sand-fixing part (2) facing away from the accumulation cavity (101). The wave-dissipating surface (22) is parallel to the diversion surface (122).

4. The beach protection member according to claim 1, characterized in that, A wave-dissipating surface (22) is formed on the side of the sand-fixing part (2) facing away from the accumulation cavity (101). The wave-dissipating surface (22) is arranged at an angle to the diversion surface (122).

5. The beach protection member according to claim 1, wherein A water-discharging hole (121) communicating with the accumulation cavity (101) is formed on the surrounding wall (12). A water-permeable member is laid on the side of the water-discharging hole (121) relative to the accumulation cavity (101).

6. The beach protection member according to claim 1, characterized in that, The wave-dissipating part (1) is a table-like structure.

7. The beach protection member according to any one of claims 1-6, characterized in that, The beach protection member further includes a splicing part (4). The splicing part (4) is arranged on the beach. The wave-dissipating part (1) is connected to the top of the splicing part (4). The splicing part (4) of one beach protection member can be spliced with the splicing part (4) of the adjacent beach protection member.

8. The revetment component according to claim 7, characterized in that, Mutually-embedded teeth (411) are arranged on the outer side wall of the splicing part (4).

9. A beach protection structure, characterized in that, Composed of a plurality of beach protection members as described in any one of claims 1-8 spliced together. A flow channel (3) allowing the reciprocating flow to pass through is formed between the diversion surfaces (122) of two adjacent beach protection members.

10. The beach protection structure according to claim 9, characterized in that, A plurality of the beach protection members are arranged in an M×N array. A first flow channel (31) formed by splicing one row of the adjacent two rows of beach protection members is arranged staggeredly with a second flow channel (32) formed by splicing the other row.

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