A flexible ecological seawall structure and its construction method

Abstract

The present invention discloses a flexible ecological seawall structure and its construction method. The flexible ecological seawall structure includes a wave-dissipating seawall, a wave-dissipating pool, an airbag seawall, and a land ecological revetment. The wave-dissipating seawall is used to initially reduce the wave energy, and the ecological pipeline buried inside it provides a water body and biological exchange channel. The wave-dissipating pool is located behind the wave-dissipating seawall and is used to further reduce the wave energy. The airbag seawall is located above the wave-dissipating pool on the land side and can well resist the tides and waves after the energy is reduced by the wave-dissipating seawall and the wave-dissipating pool. The construction method of the flexible ecological seawall structure realizes local material utilization and resource recycling by using the seabed dredged soil, providing an application scenario for traditional waste. The flexible ecological seawall structure and its construction method of the present invention can gradually reduce the wave energy, thereby reducing the design top elevation of the seawall, slowing down the overall slope of the seawall, improving the overall stability of the foundation, reducing the difficulty of foundation treatment, and reducing the project cost.

Description

Technical Field

[0001] The present invention relates to the technical field of marine sea dikes, and particularly relates to a flexible ecological sea dike structure and a construction method thereof. Background Art

[0002] A sea dike is an artificial barrier built to defend against the damage of storm tides and sea waves to the protected area. The embankment structure and the elevation of the dike crest should be able to ensure the safety of the protected area and the sea dike itself under the high tide level and wave action corresponding to the design return period.

[0003] For traditional sea dikes in important and particularly important protected areas, the design return period is usually greater than 100 years. The corresponding high tide level and strong wave action require a higher elevation of the dike crest, a heavier artificial block revetment, and a rigid structure to cope with this extreme working condition that does not occur frequently. Therefore, although traditional sea dikes can meet the protection function, they are generally of high height, with high safety risks and great difficulty in repair after damage; most coastal areas are soft soil foundations, and the excessive height difference of traditional sea dikes leads to too high foundation treatment costs; in addition, traditional sea dikes also isolate the ecological channels between the sea area and the land area.

[0004] Therefore, research on marine sea dike structures is still ongoing. For example, Chinese Patent CN119434172A (Publication Date: February 14, 2025) discloses a sea dike ecological slope protection structure and a construction method thereof, including a sea dike body filled with mud-filled tube bags. A wave-breaking wall is provided at the top of the sea dike body. A bagged gravel layer is laid on the slope of the sea dike body. A polyurethane gravel slope protection is laid on the bagged gravel layer. A wave-dissipating platform is provided on the slope. A grid stone cage is provided at the corner of the wave-dissipating platform and the slope. A protection stone cage is laid at the toe of the sea dike body. An intertidal biological habitat is arranged on the sea side of the protection stone cage. This invention can effectively increase the structural porosity of the sea dike, continue the energy transportation and material exchange between the ocean and the land, and has good wave-dissipating effect and corrosion-resistant structure; it has a simple form and strong versatility, basically avoiding the construction steps of cast-in-place concrete for the traditional sea dike concrete slope protection structure, greatly shortening the on-site construction period and maintenance period. The polyurethane gravel slope protection has a high porosity, which is beneficial to plant growth and increases the ecological nature of the sea dike structure; it is conducive to creating a good ecological effect.

[0005] Chinese Patent CN118745715A (Publication Date: October 8, 2024) discloses a seawall structure for coastal zone ecological construction. The seawall structure includes: a wave-breaking wall, which is arranged at the top of the coastal zone and forms a wave-breaking layer on the side facing the sea level; an ecological section, which is arranged on the side of the wave-breaking layer facing the sea level. The top of the ecological section forms an ecological layer suitable for biological habitation, and the height of the ecological section gradually decreases in the direction away from the wave-breaking wall; a wave-dissipating section, which is arranged on the side of the ecological section away from the wave-breaking wall. The seawall structure of this invention can not only withstand the impact of sea waves, but also provide a habitation space for organisms, which is beneficial to the ecological construction of the coastal zone.

[0006] Chinese Patent CN222632151U (Announcement Date: March 18, 2025) discloses an ecological seawall structure, belonging to the technical field of revetment engineering. It includes a dike foundation, and the dike foundation includes a slope top and a slope body. A retaining wall structure is arranged at the intersection of the slope top and the slope body; an arc-shaped wave-dissipating sill is arranged at a certain distance from the retaining wall structure at the top of the slope body. A cushion layer is laid at the position between the arc-shaped wave-dissipating sill and the retaining wall structure at the top of the slope body. The cushion layer includes a dry-laid stone block cushion layer and a crushed stone cushion layer arranged from top to bottom in sequence. A block stone cushion layer I is laid at the position on the side of the arc-shaped wave-dissipating sill away from the retaining wall structure at the top of the slope body. The block stone cushion layer I extends to the bottom of the slope body, and the block stone cushion layer I also extends outward to connect with a horizontal block stone cushion layer II. A concrete retaining wall I is arranged at the intersection of the block stone cushion layer I and the block stone cushion layer II. A twisted block is laid at the position on the outside of the concrete retaining wall I at the top of the block stone cushion layer II. This utility model can effectively ensure the safety of the seawall and guarantee the stability of the seawall structure.

[0007] Based on the above existing technology retrieval and analysis, it can be seen that although many currently proposed ecological seawall structures solve the problems that the traditional seawall structure affects the natural form of the coast and blocks the energy transportation and material exchange between the ocean and the land; however, the existing ecological seawall structures do not pay attention to how to reduce the design top elevation of the seawall, slow down the comprehensive slope of the seawall; how to reduce the difficulty of foundation treatment; and how to reduce the difficulty of repairing the seawall after damage.

[0008] Therefore, there is an urgent need for a flexible ecological seawall structure and corresponding construction method that reduce the design top elevation of the seawall, slow down the comprehensive slope of the seawall, and at the same time reduce the difficulty of foundation treatment and repair. Summary of the Invention

[0009] To solve the above technical problems, the present invention provides a flexible ecological seawall structure and its construction method.

[0010] A flexible ecological seawall structure includes a wave-dissipating seawall, a wave-dissipating pool, an airbag seawall, and a land ecological revetment. The wave-dissipating seawall is a rubble mound seawall facing the sea area, which is used to initially reduce wave energy. An ecological pipeline is buried inside the wave-dissipating seawall, and the ecological pipeline provides a water body and biological exchange channel. The wave-dissipating pool is located behind the wave-dissipating seawall and is used to further reduce wave energy. The airbag seawall is located above the wave-dissipating pool on the land side and can well resist the tides and waves after the energy is reduced by the wave-dissipating seawall and the wave-dissipating pool. The area behind the wave-dissipating pool and the airbag seawall is a backfill area. The land ecological revetment is located behind the airbag seawall and covers the backfill area.

[0011] Furthermore, one end of the ecological pipeline is open to the sea area and is near the low water level; the other end is open to the wave-dissipating pool and is near the normal water level in the pool. Seawater and some marine organisms can be exchanged through the ecological pipeline.

[0012] Furthermore, the wave-dissipating seawall also includes a dike body and a facing. The facing is located above the dike body. The dike body material uses core stones that can adapt to deformation. The facing uses multi-void artificial blocks, such as king-sized cross-shaped blocks, inverted king-sized cross-shaped blocks, four-legged hollow blocks, and cribbing plates, etc., to protect the core stones and facilitate the attachment and survival of marine organisms.

[0013] Furthermore, the facing includes a sea-facing facing and a land-facing facing. The sea-facing facing is located on the slope of the wave-dissipating seawall facing the sea area. The land-facing facing is located on the slope of the wave-dissipating seawall facing the wave-dissipating pool.

[0014] Furthermore, the wave-dissipating pool includes a solidified sea mud layer, a sea mud layer, and an inner dike. The solidified sea mud layer is located between the wave-dissipating seawall and the inner dike and is the anti-seepage layer of the wave-dissipating pool. The height of the solidified sea mud layer does not exceed the height of the dike body of the wave-dissipating seawall and the inner dike of the wave-dissipating pool. The sea mud layer is located above the solidified sea mud layer, and the height of the sea mud layer does not exceed the height of the solidified sea mud layer. The sea mud layer includes a planting forest, which can further reduce wave energy and creates conditions for further reducing the elevation of the top of the land revetment.

[0015] Furthermore, the airbag seawall includes an airbag and a foundation. The foundation has a storage pit, and the airbag is installed in the storage pit through an anchoring device. There is an inflation device on the airbag. Usually, the airbag is emptied and folded for storage in the pit, which does not affect the seawall landscape. When encountering extreme water levels and waves above the design return period and above, the airbag is inflated to form a flexible structure with a certain height. The inflated airbag serves as a wave-blocking structure, which can consume wave energy through deformation, has good adaptability to waves, and can effectively prevent waves from eroding the land ecological revetment.

[0016] Furthermore, the land ecological revetment includes an ecological revetment surface and a vegetation layer planted above the ecological revetment surface; the ecological revetment surface is made of ecological concrete or artificial concrete blocks with planting holes.

[0017] Furthermore, the ecological pipeline includes a pipe wall and spiral teeth, and the spiral teeth are located inside the pipe wall to reduce wave energy and create conditions for some marine organisms to enter the wave dissipation pool.

[0018] Furthermore, the seaward-facing revetment surface is located above the solidified sea mud layer and is adjacent to the sea mud layer.

[0019] Compared with the prior art, the advantages and effects of the present invention are as follows:

[0020] 1. The present invention provides a flexible ecological seawall structure. By gradually reducing wave energy through the wave dissipation dike, wave dissipation pool, and airbag dike, it effectively reduces the design wave run-up height, lowers the design top elevation of the seawall, and slows down the overall slope of the seawall, improving the overall stability of the foundation, reducing the difficulty of foundation treatment, and lowering the project cost.

[0021] 2. The present invention provides a flexible ecological seawall structure. By setting an airbag dike, the flexible structure of the airbag can flexibly handle different situations, avoiding problems such as a high seawall height, high safety risks, and great difficulty in foundation treatment caused by rigid structures dealing with infrequent extreme working conditions.

[0022] 3. The present invention provides a flexible ecological seawall structure. By setting up ecological pipelines, planting forests, and vegetation layers, it improves the ecological environment of the seawall structure and enhances the diversity of coastal species and the coastal ecology.

[0023] 4. The present invention provides a flexible ecological seawall structure. By setting ecological pipelines inside the wave dissipation dike, an ecological channel is formed between the sea area and the land area; by setting spiral teeth inside the ecological pipeline, wave energy is further reduced and conditions are created for some marine organisms to enter the wave dissipation pool.

[0024] 5. The present invention provides a construction method for a flexible ecological seawall structure. By using the dredged soil of the seabed to form a solidified sea mud layer as the anti-seepage layer of the wave dissipation pool and using the dredged soil of the seabed to form a sea mud layer as the growth substrate soil for the planting forest; it realizes local material utilization and resource recycling, provides an application scenario for traditional waste, and at the same time directly reuses the dredged soil, reducing construction costs and carbon emissions.

[0025] The above description is only an overview of the technical solution of this application. In order to be able to understand the technical means of this application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features, and advantages of this application more obvious and understandable, the following will be described in detail with reference to the preferred embodiments of this application and the accompanying drawings.

[0026] Those skilled in the art will better understand the above and other objects, advantages and features of the present application from the following detailed description of specific embodiments of the present application in conjunction with the accompanying drawings. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to actual scale.

[0028] Wherein:

[0029] Figure 1 is a schematic structural diagram of a flexible ecological seawall structure provided by the present invention;

[0030] Figure 2 is a schematic structural diagram of an airbag seawall of a flexible ecological seawall structure provided by the present invention;

[0031] Figure 3 is a cross-sectional view of an ecological pipeline of a flexible ecological seawall structure provided by the present invention.

[0032] Figure 4 is a sectional view of an ecological pipeline of a flexible ecological seawall structure provided by the present invention.

[0033] Figure 5 is a flow chart of a construction method of a flexible ecological seawall structure provided by the present invention.

[0034] Description of the Reference Numerals: 1 - wave-dissipating seawall; 11 - seawall body; 12 - ecological pipeline; 121 - pipe wall; 122 - spiral protrusions; 131 - sea-facing protective surface; 132 - land-facing protective surface; 14 - landscape road; 15 - bedding stone; 2 - wave-dissipating pool; 21 - solidified sea mud layer; 22 - sea mud layer; 23 - planting forest; 24 - inner seawall; 3 - airbag seawall; 31 - airbag; 32 - foundation; 33 - anchoring device; 34 - inflation device; 4 - land ecological revetment; 41 - ecological protective surface; 42 - vegetation layer; 5 - backfill area. Detailed Embodiments

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. In the following description, specific details such as specific configurations and components are provided only to assist in a comprehensive understanding of the embodiments of this application. Therefore, those skilled in the art should clearly understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Additionally, descriptions of known functions and configurations are omitted for clarity and conciseness in the embodiments.

[0036] It should be understood that the term "one embodiment" or "this embodiment" mentioned throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, the appearances of the term "one embodiment" or "this embodiment" throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner.

[0037] In addition, this application may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity, and in itself does not indicate the relationship between the various embodiments and / or arrangements discussed.

[0038] The term "and / or" in this document is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, B exists alone, and both A and B exist simultaneously. The term " / and" in this document describes another association relationship of associated objects, indicating that two relationships can exist. For example, A / and B can represent: A exists alone, and both A and B exist. Additionally, the character " / " in this document generally indicates that the associated objects before and after are in an "or" relationship.

[0039] The term "at least one" in this document is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, at least one of A and B can represent: A exists alone, both A and B exist simultaneously, and B exists alone.

[0040] It should also be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising", or any other variation thereof is intended to cover a non-exclusive inclusion.

[0041] Embodiment 1

[0042] This embodiment provides a flexible ecological seawall structure.

[0043] A flexible ecological seawall structure includes a wave-dissipating seawall 1, a wave-dissipating pool 2, an airbag seawall 3, and a land ecological revetment 4. The wave-dissipating seawall 1 is a rubble mound breakwater arranged facing the sea area, which is used to initially reduce the wave energy and creates conditions for reducing the elevation of the top of the land revetment. An ecological pipeline 12 is buried inside the wave-dissipating seawall 1 to provide a water body and biological exchange channel. The wave-dissipating pool 2 is located behind the wave-dissipating seawall 1 and is used to further reduce the wave energy. The airbag seawall 3 is located above the wave-dissipating pool 2 on the land side and can well resist the tides and waves after the energy is reduced by the wave-dissipating seawall 1 and the wave-dissipating pool 2. A backfill area 5 is behind the wave-dissipating pool 2 and the airbag seawall 3. The land ecological revetment 4 is located behind the airbag seawall 3 and covers the backfill area 5.

[0044] The technical effect of this embodiment: A flexible ecological seawall structure gradually reduces the wave energy through the wave-dissipating seawall, the wave-dissipating pool, and the airbag seawall, effectively reducing the design wave run-up height, lowering the design top elevation of the seawall, and slowing down the overall slope of the seawall, improving the overall stability of the foundation, reducing the difficulty of foundation treatment, and reducing the project cost.

[0045] Embodiment 2

[0046] Based on Embodiment 1, this embodiment is a further design of the wave-dissipating seawall 1 and the wave-dissipating pool 2 of a flexible ecological seawall structure.

[0047] Please refer to Figure 1 , which is a schematic structural diagram of a flexible ecological seawall structure provided by the present invention. A flexible ecological seawall structure includes a wave-dissipating seawall 1, a wave-dissipating pool 2, an airbag seawall 3, and a land ecological revetment 4. An ecological pipeline 12 is buried inside the wave-dissipating seawall 1.

[0048] The wave-dissipating seawall 1 further includes a seawall body 11 and a facing. The facing is located above the seawall body 11. The material of the seawall body 11 is core stones that can adapt to deformation. The facing uses multi-void artificial blocks, which include Dolos blocks, Icos blocks, four-foot hollow blocks, crib blocks, etc., to protect the core stones and facilitate the attachment and survival of marine organisms.

[0049] The facing includes a sea-facing facing 131 and a land-facing facing 132. The sea-facing facing 131 is located on the slope of the wave-dissipating seawall 1 facing the sea area. The land-facing facing 132 is located on the slope of the wave-dissipating seawall 1 facing the wave-dissipating pool 2.

[0050] The wave dissipating pool 2 includes a solidified sea mud layer 21, a sea mud layer 22, and an inner dike 24. The solidified sea mud layer 21 is located between the wave dissipating dike 1 and the inner dike 24 and is the anti-seepage layer of the wave dissipating pool 2. The height of the solidified sea mud layer 21 does not exceed the heights of the dike body 11 of the wave dissipating dike 1 and the inner dike 24. The sea mud layer 22 is located above the solidified sea mud layer 21, and the height of the sea mud layer 22 does not exceed the height of the solidified sea mud layer 21. The sea mud layer 22 includes a planting forest 23, which can further reduce wave energy and creates conditions for further reducing the elevation of the land revetment top.

[0051] The solidified sea mud layer 21 is formed by mixing sea bed dredged soil and a solidifying agent and is a low-permeability mixture with a certain strength. It can prevent water leakage in the wave dissipating pool, maintain the water level in the wave dissipating pool, and provide living conditions for the planting forest 23. The material of the sea mud layer 22 includes sea bed dredged soil. The materials of the solidified sea mud layer 21 and the sea mud layer 22 are mainly marine dredged soil, which not only provides an application scenario for such traditional waste, but also reduces construction costs and shortens the construction period.

[0052] The land ecological revetment 4 includes an ecological surface layer 41 and a vegetation layer 42 planted above the ecological surface layer 41. The ecological surface layer 41 is made of ecological concrete or artificial concrete blocks with planting holes.

[0053] Furthermore, the wave dissipating dike 1 further includes a landscape road 14 and cushion stones 15. The landscape road 14 is located at the top of the wave dissipating dike 1, and the cushion stones 15 are located between the dike body 11 and the surface layer.

[0054] Furthermore, the back sea surface layer 132 is located above the solidified sea mud layer 21 and is adjacent to the sea mud layer 22.

[0055] Furthermore, the planting forest 23 includes mangroves and marine organisms.

[0056] Technical effects of this embodiment: A flexible ecological sea dike structure improves the ecological environment of the sea dike structure, enhances the diversity of coastal species and the coastal ecology through the settings of ecological pipelines, planting forests, and vegetation layers. By using sea bed dredged soil to form a solidified sea mud layer as the anti-seepage layer of the wave dissipating pool and using sea bed dredged soil to form a sea mud layer as the growth substrate soil for the planting forest, local materials are used and resources are recycled, providing an application scenario for traditional waste. At the same time, the direct reuse of dredged soil reduces construction costs and carbon emissions.

[0057] Embodiment 3

[0058] Based on Embodiment 2, this embodiment provides a structural design of an airbag dike for a flexible ecological sea dike structure.

[0059] Please refer to Figure 2, which is a schematic diagram of the airbag dike structure of a flexible ecological seawall structure provided by the present invention.

[0060] The airbag dike 3 includes an airbag 31 and a foundation 32. The foundation 32 has a storage pit, and the airbag 31 is installed in the storage pit through an anchoring device 33; an inflation device 34 is provided on the airbag 31. Usually, the airbag is emptied and folded for storage in the pit, which does not affect the seawall landscape; when encountering extreme water levels and waves above the design return period, the airbag is inflated to form a flexible structure with a certain height. After inflation, the airbag 31 serves as a wave-blocking structure, which can consume wave energy through deformation, has good adaptability to waves, and can effectively prevent waves from eroding the land ecological revetment.

[0061] Furthermore, the airbag 31 is a closed bag body, including a stress skeleton and a protective layer. The protective layer is coated on the inner and outer surfaces of the stress skeleton; the material of the stress skeleton includes high-strength synthetic fiber fabric; the material of the protective layer includes rubber.

[0062] Furthermore, the foundation 32 is a reinforced concrete structure. The airbag 31 is anchored to the bottom of the storage pit through an anchoring device 33, and the anchoring device 33 includes closely arranged anchor bolts.

[0063] The technical effect of this embodiment: A flexible ecological seawall structure, through the inflatable airbag of the airbag dike, can flexibly respond to different scenarios, avoiding problems such as high seawall height, high safety risk, and great difficulty in the foundation due to the rigid structure's response to infrequent extreme working conditions.

[0064] Embodiment 4

[0065] Based on Embodiment 2, this embodiment provides a structural design of the ecological pipeline of a flexible ecological seawall structure.

[0066] Please refer to Figures 3 - 4 , Figure 3 , which is a cross-sectional view of the ecological pipeline of a flexible ecological seawall structure provided by the present invention, Figure 4 , which is a sectional view of the ecological pipeline of a flexible ecological seawall structure provided by the present invention.

[0067] One end of the ecological pipeline 12 is open to the sea area and is near the low water level; the other end is open to the wave dissipation pool 2 and is near the normal water level in the pool. Seawater and some marine organisms can be exchanged through the ecological pipeline 12.

[0068] Furthermore, the material of the ecological pipeline 12 includes PVC, fiberglass sand-filled pipe, etc.; the ecological pipeline 12 includes a pipe wall 121 and spiral protrusions 122. The spiral protrusions 122 are located inside the pipe wall 121 to reduce wave energy and create conditions for some marine organisms to enter the wave dissipation pool.

[0069] Technical effect of this embodiment: A flexible ecological seawall structure forms an ecological channel between the sea area and the land area by arranging ecological pipelines in the wave-dissipating dike; by arranging spiral protrusions in the ecological pipelines, the wave energy is further reduced and conditions are created for some marine organisms to enter the wave-dissipating pool.

[0070] Embodiment 5

[0071] Based on Embodiment 3 or 4, this embodiment provides a construction method for a flexible ecological seawall structure.

[0072] Please refer to Figure 5 , which is a flowchart of a construction method for a flexible ecological seawall structure provided by the present invention. A construction method for a flexible ecological seawall structure includes the following steps:

[0073] Step S1: Start the construction of the wave-dissipating dike 1. Fill the dike body 11 on the reinforced foundation and bury the ecological pipeline 12 in the dike body 11, and then install the seaward facing protection surface 131 on the seaward side of the dike body 11;

[0074] Step S2: Start the construction of the wave-dissipating pool 2. According to the design, fill the inner dike 24 behind the dike body 11, and then blow-fill the seabed dredged soil added with a curing agent between the dike body 11 and the inner dike 24 to form a solidified sea mud layer 21. After the strength of the solidified sea mud layer 21 reaches the design requirements, dig out the central part thereof;

[0075] Step S3: Complete the wave-dissipating dike 1, lay the ecological pipeline 12 outside the dike body 11 in the wave-dissipating dike 1, and then install the landward facing protection surface 132 on the landward side of the dike body 11;

[0076] Step S4: Complete the wave-dissipating pool 2. Blow-fill the seabed dredged soil at the central position of the solidified sea mud layer 21 to form a sea mud layer 22, and plant mangrove plants on the sea mud layer 22 to form a planting forest 23;

[0077] Step S5: Complete the airbag dike 3. Formwork is supported above the inner dike 24 and the solidified sea mud layer 21, and then the foundation 32 is poured, and the airbag 31 is installed in the storage pit of the foundation 32;

[0078] Step S6: Complete the land ecological revetment 4. Backfill is carried out behind the wave-dissipating pool 2 and the airbag dike 3 to form a backfill area 5. An ecological protection surface 41 is paved on the surface of the backfill area 5, and vegetation is planted on the ecological protection surface 41 to form a vegetation layer 42.

[0079] Furthermore, the step S3 further includes: constructing a landscape road 14, and installing the landscape road 14 between the seaward facing protection surface 131 and the landward facing protection surface 132 above the dike body 11.

[0080] Technical effects of this embodiment: Using the seabed dredged soil generated from foundation treatment as the growth substrate soil for the planted forest or mixing and solidifying it with a curing agent and then using it as the anti-seepage layer of the wave dissipation pool can not only reduce the foundation treatment cost and shorten the construction period, but also achieve resource reuse and reduce environmental pollution.

[0081] In summary, the present invention provides a flexible ecological seawall structure and its construction method. By gradually reducing wave energy through the wave dissipation dyke, wave dissipation pool, and airbag dyke, it effectively reduces the design wave run-up height, lowers the design top elevation of the seawall, and slows down the overall slope of the seawall, improving the overall stability of the foundation, reducing the difficulty of foundation treatment, and reducing the project cost. The invention has original innovation.

[0082] The above specific implementation manners have further elaborated on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific implementation manners of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A construction method of a flexible ecological seawall structure, characterized in that, It includes the following steps: Step S1: Start the construction of the wave-dissipating breakwater. Fill the embankment body on the reinforced foundation and bury the ecological pipeline in the embankment body, and then install the seaward-facing protection layer on the seaward side of the embankment body; Step S2: Start the construction of the wave-dissipating pool. According to the design, fill the inner embankment behind the breakwater, and then fill and blow the seabed dredged soil added with a curing agent between the breakwater and the inner embankment to form a solidified sea mud layer. After the strength of the solidified sea mud layer reaches the design requirements, excavate the central part thereof; Step S3: Complete the wave-dissipating breakwater, lay the ecological pipeline outside the embankment body in the breakwater, and then install the landward-facing protection layer on the landward side of the embankment body; Step S4: Complete the wave-dissipating pool. Fill the seabed dredged soil at the central position of the solidified sea mud layer to form a sea mud layer, and plant mangrove plants on the sea mud layer to form a plantation; Step S5: Complete the airbag embankment. Formwork is supported above the inner embankment and the solidified sea mud layer, and then the foundation is poured. An airbag is installed in the storage pit of the foundation; Step S6: Complete the land ecological revetment. Backfill is carried out behind the wave-dissipating pool and the airbag embankment to form a backfill area. An ecological protection layer is paved on the surface of the backfill area, and vegetation is planted on the ecological protection layer to form a vegetation layer; The flexible ecological seawall structure includes a wave-dissipating breakwater, a wave-dissipating pool, an airbag embankment and a land ecological revetment; The wave-dissipating breakwater is a rubble mound breakwater, which is arranged facing the sea area and an ecological pipeline is buried inside; The wave-dissipating pool is located behind the wave-dissipating breakwater; The airbag embankment is located above the wave-dissipating pool on the landward side; The area behind the wave-dissipating pool and the airbag embankment is the backfill area; The land ecological revetment is located behind the airbag embankment and covers the backfill area; The wave-dissipating pool includes a solidified sea mud layer, a sea mud layer and an inner embankment. The solidified sea mud layer is located between the wave-dissipating breakwater and the inner embankment and is the anti-seepage layer of the wave-dissipating pool; the sea mud layer is located above the solidified sea mud layer; The airbag embankment includes an airbag and a foundation. The foundation has a storage pit, and the airbag is installed in the storage pit through an anchoring device; an inflation device is arranged on the airbag.

2. The construction method of a flexible ecological seawall structure according to claim 1, characterized in that, One end of the ecological pipeline opens towards the sea area, and the other end opens towards the wave-dissipating pool.

3. The construction method of a flexible ecological seawall structure according to claim 1 or 2, characterized in that The wave-dissipating breakwater further includes an embankment body and a protection layer. The protection layer is located above the embankment body; the embankment body material is the core stones that can adapt to deformation; the protection layer adopts multi-void artificial blocks.

4. The construction method of a flexible ecological seawall structure according to claim 3, characterized in that, The protection layer includes a seaward-facing protection layer and a landward-facing protection layer; the seaward-facing protection layer is located on the seaward slope of the wave-dissipating breakwater; the landward-facing protection layer is located on the slope of the wave-dissipating breakwater facing the wave-dissipating pool.

5. A construction method of a flexible ecological seawall structure according to claim 2, characterized in that, The land ecological revetment includes an ecological protection layer and a vegetation layer planted above the ecological protection layer.

6. The construction method of a flexible ecological seawall structure according to claim 5, characterized in that, The ecological pipeline includes a pipe wall and spiral teeth, and the spiral teeth are located inside the pipe wall.

7. The construction method of a flexible ecological seawall structure according to claim 4, characterized in that, The landward-facing protection layer is located above the solidified sea mud layer.

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