Ecological coastal zone super embankment

Abstract

The utility model discloses an ecological coastal zone super embankment and relates to the field of hydraulic offshore engineering. The ecological coastal zone super embankment is characterized in that the super embankment comprises a seawall body, a wave storage space and a municipal road, the seawall body is located in a coastal zone water area, the municipal road is located on the seaside of an urban plot, and the wave storage space is arranged between the seawall body and the municipal road; according to the coastal zone ecological protection system, the mode that the wide gentle slope embankment gradually increased in a stepped mode and the municipal road are combined for construction is adopted, multi-stage wave dissipation is achieved through the embankment buffer zone and the stepped planting pool, and a municipal road microtopography soil slope green belt serves as a soil embankment wave wall for wave insulation, so that a traditional embankment enclosing barrier is broken through; the multiple purposes of being sea-friendly for the public, rich in shoreline landscape and high in capability of resisting natural marine disasters are achieved, and the development value of urban land parcels is improved.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic offshore engineering, and in particular to an ecological coastal super embankment which effectively reduces the height of the embankment, reduces the wave climbing, improves the flood control safety of the seawall, creates a rich, ecological, and layered waterfront space, breaks the traditional embankment siege barrier, and leaves enough development space for subsequent urban land development. Background Art

[0002] Seawalls are common defense projects in coastal areas, designed to resist seawater erosion and storm surges, and protect coastal cities and people. In order to meet the requirements of flood control and safety, the top of the traditional seawall is about 2 meters above the ground on average, forming a levee-surrounded city, blocking the connection between the city and the water, and failing to meet people's needs for being close to the sea and water; at the same time, the levee has a narrow water-facing surface, poor wave-breaking effect, hardened coastline, destroyed offshore ecology, and reduced the habitat of marine life. Summary of the invention

[0003] The utility model aims to solve the shortcomings of existing seawalls and provide an ecological coastal super-embankment that effectively reduces the height of the embankment, reduces the wave climbing, improves the flood control safety of the seawall, creates a rich, ecological, and layered waterfront space, breaks the traditional embankment siege barriers, and at the same time leaves enough development space for subsequent urban land development.

[0004] The utility model is an ecological coastal zone super dike, which is characterized in that the super dike comprises a sea dike body, a wave storage space and a municipal road, the sea dike body is located in the coastal zone waters, the municipal road is located on the sea side of the urban plot, and a wave storage space is arranged between the sea dike body and the municipal road; wherein:

[0005] The main body of the seawall is a wave-breaking wall made of mortar-laid rubble. Prefabricated wave-breaking blocks are laid on the slope of the embankment. A embankment footing platform is set on the seaward side of the embankment. The embankment footing platform and the embankment are connected by the toe of the wave-breaking wall.

[0006] The wave storage space increases step by step from the coastal waters to the urban plots, which are the hydrophilic trail, the primary buffer zone, the stepped planting pool, the green garden road and the secondary buffer zone. The hydrophilic trail is smoothly connected with the top of the wave-breaking wall. The hydrophilic trail is lower than the green garden road. The stepped planting pool is set between the hydrophilic trail and the green garden road to eliminate the height difference between the two. Connecting pipes are set in the primary buffer zone and the secondary buffer zone. The connecting pipes are connected to the rainwater pipes, and the tail ends of the rainwater pipes are connected to the sponge system.

[0007] From the coastal waters to the urban plots, the municipal roads are composed of slow lanes, micro-topography slope green belts and motor vehicle lanes. The slow lanes and green garden roads are smoothly connected through the set-up secondary buffer zone, and the municipal roads are connected to the urban plots outside.

[0008] The wave-breaking prefabricated block is in a horizontal U-shape, with its opening facing the coastal waters. Bolt holes are arranged in the arc section, and positioning bolts are arranged in the bolt holes. The prefabricated wave-breaking block is fixed to the mortar-laid rubble wave-breaking wall through the positioning bolts.

[0009] The wave-breaking prefabricated blocks are connected to the embankment body by positioning bolts. Several wave-breaking prefabricated blocks are stacked from top to bottom. A limit block is arranged on the top of the wave-breaking prefabricated blocks, a limit hole is arranged on the bottom, a limit block is arranged on one side wall, and a limit hole is arranged on the other side wall. The upper and lower connected wave-breaking prefabricated blocks are connected by the limit block on the top and the limit hole on the bottom, and the left and right adjacent wave-breaking prefabricated blocks are connected by the limit block and the limit hole on the side wall, so as to ensure the stability of the connection of the wave-breaking blocks.

[0010] The foot platform is constructed with riprap and clay, with the stone blocks weighing no less than 100 kg; reeds and samphire tidal flat plants are planted at the bottom of the platform.

[0011] The upper part of the hydrophilic trail is a permeable brick pavement, and the lower part is graded crushed stone.

[0012] The primary buffer zone and the secondary buffer zone both adopt a structure combining shrubs and turf, the turf is made of Bermuda grass and tall fescue, and the shrubs are made of simple leaf vine and Pittosporum tobira, serving as the urban waterfront landscape green space activity space.

[0013] The stepped planting pool is prefabricated with reinforced concrete, and the pool is covered with planting soil with a thickness of 0.35 to 0.85 meters, and creepers are planted in the planting soil.

[0014] The upper part of the green garden road is a colored permeable asphalt road surface, and the lower part is graded crushed stone.

[0015] The connecting pipe is made of high-density polyethylene (HDPE) pipe, and the pipe diameter is determined by calculating the excess rainwater runoff.

[0016] The rainwater pipe is made of reinforced concrete pipe, and the pipe diameter is determined by rainwater confluence calculation.

[0017] The slow lane is for pedestrians and non-motor vehicles to travel, and the upper part of the road surface structure is modified asphalt road surface, and the lower part is cement stabilized gravel.

[0018] The planting soil in the micro-topography slope green belt is accumulated in the form of a convex small mound, and an anti-scouring reinforced ecological vegetation mesh mat is laid on the surface. The micro-topography slope green belt can be used as an urban road green belt to separate traffic and beautify the city, and can also be used as an earth embankment wave-breaking wall to block overtopping waves and ensure the flood control safety of urban plots behind the embankment; the laid anti-scouring reinforced ecological vegetation mesh mat can improve the anti-scouring performance against overtopping waves and ensure the stability of the earth embankment wave-breaking wall.

[0019] The ecological coastal zone super embankment of the utility model adopts the form of integrated construction of stepped wide and gentle slope embankments and municipal roads, forming a coastal zone ecological protection system with embankment buffer zones and stepped planting pools for multi-level wave elimination, and municipal road micro-topography earth slope green belts as earth embankment wave-breaking walls to break waves. It breaks the traditional embankment siege barriers, achieves multiple goals of public access to the sea, rich coastline landscape, and high ability to resist marine natural disasters, and improves the development value of urban plots. It also has the following benefits:

[0020] (1) The embankment platform is made of building materials such as boulders that are suitable for the coastal ecosystem, which helps aquatic organisms such as shellfish and algae and aquatic plants to attach, thus promoting ecosystem diversity;

[0021] (2) By setting the seaward side of the wave-breaking wall in an arc shape to form a bite shape, the direction of wave impact can be changed and it can collide with the waves behind and reduce wave energy. The back of the prefabricated wave-breaking blocks installed on the seaward side of the wave-breaking wall is in an arc shape, which can also change the direction of wave impact and reduce wave energy, forming a secondary wave-breaking effect, thereby effectively controlling the wave climbing and increasing the service life of the embankment. At the same time, the wave-breaking blocks are prefabricated and designed in a single form, which is convenient for on-site construction and installation and quick replacement and maintenance when damaged, thereby reducing construction and maintenance costs;

[0022] (3) The wave storage space is in the form of a stepped wide and gentle slope. Through the primary buffer zone, the secondary buffer zone, and the stepped planting pool, the impact energy of the seawater overtopping on the embankment is buffered, the wave climbing height is reduced, the third-level wave dissipation effect is achieved, the top elevation of the wave-breaking wall is lowered, and at the same time, a waterfront landscape belt with rich layers is formed, which increases the leisure and entertainment interest of citizens;

[0023] (4) The stepped planting pool can cleverly connect the landscape green space and the waterfront trail, eliminating the height difference between the two. At the same time, creepers are planted in the planting pool. After they grow up, they climb and cover the reinforced concrete planting pool, improving the greening of the slope and reducing the traces of engineering.

[0024] (5) Connecting pipes and rainwater pipes are installed in the first and second buffer zones of the wave storage space to absorb and remove excess rainwater from green spaces, forming a sponge city system in the waterfront landscape belt, which can absorb, store, infiltrate and purify water when it rains. The stored water can be used as water for public spaces and other facilities when needed. At the same time, plants in the buffer zone can effectively reduce sedimentation pollutants and non-point source pollution, and enhance the ecological system function of the wave storage space;

[0025] (6) A coastal ecological protection system with gradually increasing width and gentle slope embankments and municipal roads is constructed in a stepped manner, forming embankment buffer zones and stepped planting pools for multi-level wave dissipation, and micro-topography earth slope green belts on municipal roads as earth embankment wave-breaking walls to break waves. This will achieve the multiple goals of bringing the public closer to the sea, enriching the coastline landscape, resisting marine natural disasters, and increasing the development value of urban land. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the utility model.

[0027] Figure 2 This is a schematic diagram of the wave-breaking prefabricated block structure.

[0028] Figure 3 It is a side view of the wave-breaking prefabricated block.

[0029] Among them: wave-breaking wall 1, wave-breaking prefabricated blocks 2, hydrophilic trail 3, primary buffer zone 4, stepped planting pool 5, green garden road 6, secondary buffer zone 7, slow lane 8, micro-topography slope green belt 9, motor vehicle lane 10, limit blocks 11, and limit holes 12. DETAILED DESCRIPTION

[0030] Embodiment 1: An ecological coastal super dike, comprising a sea dike body, a wave storage space and a municipal road, wherein the sea dike body is located in the coastal waters, the municipal road is located on the sea side of the urban plot, and a wave storage space is provided between the sea dike body and the municipal road; wherein:

[0031] The main body of the seawall is a wave-breaking wall made of mortar-laid rubble. The slope of the embankment is paved with prefabricated wave-breaking blocks. A footing platform is set up on the sea side of the embankment. The footing platform and the embankment are connected by the toe of the wave-breaking wall. The elevation of the footing platform is 1.04m. It is filled with riprap and clay. The block of stone is not less than 100kg. Reeds and other tidal flat plants are planted on the platform.

[0032] The wave storage space increases step by step from the coastal waters to the urban plot, which is a hydrophilic trail, a primary buffer zone, a stepped planting pool, a green garden road and a secondary buffer zone. The hydrophilic trail is smoothly connected with the top of the wave-breaking wall. The elevation of the hydrophilic trail is 3.96m, and the pavement structure is 5cm thick permeable brick pavement and 20cm thick graded crushed stone from top to bottom; the top elevation of the green garden road is 4.28m, and the pavement structure is 8cm thick PAC-13 colored permeable asphalt pavement and 20cm thick permeable base from top to bottom; the hydrophilic trail and the green garden road are connected by a stepped planting pool. To eliminate the height difference between the two, the stepped planting pools are prefabricated with reinforced concrete. Each planting pool is covered with planting soil with a thickness of 40cm, and creepers are planted in the pools. Connecting pipes are set in the primary and secondary buffer zones, using high-density polyethylene HDPE pipes with a diameter of DN400; the connecting pipes are connected to the rainwater pipes, which are made of reinforced concrete pipes with a diameter of DN800; the tail end of the rainwater pipe is connected to the sponge system; the primary and secondary buffer zones both use a structure combining shrubs and turf, with Bermuda grass and tall fescue as turf, and simple leaf vine and Pittosporum as shrubs, as urban waterfront landscape green space activity space;

[0033] The municipal road from the coastal waters to the urban plots is composed of a slow lane, a micro-topography slope green belt and a motor vehicle lane. The slow lane and the green garden road are smoothly connected by a secondary buffer zone, and the municipal road is connected to the urban plots outside. The slow lane is for pedestrians and non-motor vehicles. The upper part of the pavement structure is 4 cm thick AC-13 modified asphalt concrete, and the lower part is 6 cm thick AC-20 modified asphalt concrete cement stabilized gravel.

[0034] The wave-breaking prefabricated block is in a horizontal U-shape, with its opening facing the coastal waters. Bolt holes are provided in the arc section, and positioning bolts are provided in the bolt holes, which are fixed to the mortar-laid rubble wave-breaking wall through positioning bolts. The wave-breaking prefabricated block is connected to the embankment body with positioning bolts. Several wave-breaking prefabricated blocks are stacked from top to bottom. A limit block is provided on the top of the wave-breaking prefabricated block, a limit hole is provided on the bottom, a limit block is provided on one side wall, and a limit hole is provided on the other side wall. The upper and lower connected wave-breaking prefabricated blocks are connected through the limit block on the top and the limit hole on the bottom, and the left and right adjacent wave-breaking prefabricated blocks are connected through the limit block and the limit hole on the side wall to ensure the stability of the connection of the wave-breaking blocks.

[0035] The planting soil in the micro-topography slope green belt is accumulated in the form of a small convex mound, and an anti-scouring reinforced ecological vegetation mesh mat is laid on the surface. The micro-topography slope green belt can be used as an urban road green belt to separate traffic and beautify the city, and can also be used as an earth embankment wave-breaking wall to block overtopping waves and ensure the safety of flood control of urban plots behind the embankment; the laid anti-scouring reinforced ecological vegetation mesh mat can improve the anti-scouring performance against overtopping waves and ensure the stability of the earth embankment wave-breaking wall.

[0036] Through calculation and combining with the urban planning of the area, the elevation of the slow lane and motor vehicle lane of the municipal road is 4.8m in accordance with the design that allows overtopping of waves, while the planting soil accumulation height of the micro-topography earth slope green belt is 50cm, that is, the top surface elevation is 5.3m. The earth embankment top wave-breaking wall formed by the micro-topography earth slope green belt and the erosion-resistant reinforced ecological vegetation net mat blocks the waves from the sea and meets the requirements for the elevation of the embankment top that does not allow overtopping of waves. If the traditional seawall construction plan is adopted, and the wide and gently sloping stepped wave storage space is not adopted for multi-level wave dissipation, the top elevation of the wave-breaking wall will reach 7.5m, while the planned elevation of the urban plots around the coastal zone is 6m, and the top of the wave-breaking wall is about 2m above the ground, which will cause the phenomenon of embankment siege.

Claims

1. An ecological coastal zone super dike, characterized in that The super dike includes a sea dike body, a wave storage space and a municipal road. The sea dike body is located in the coastal waters, the municipal road is located on the sea side of the urban plot, and a wave storage space is set between the sea dike body and the municipal road; among which: The main body of the seawall is a wave-breaking wall made of mortar-laid rubble. Prefabricated wave-breaking blocks are laid on the slope of the embankment. A embankment footing platform is set on the seaward side of the embankment. The embankment footing platform and the embankment are connected by the toe of the wave-breaking wall. The wave storage space increases step by step from the coastal waters to the urban plots, which are the hydrophilic trail, the primary buffer zone, the stepped planting pool, the green garden road and the secondary buffer zone. The hydrophilic trail is smoothly connected with the top of the wave-breaking wall. The hydrophilic trail is lower than the green garden road. The stepped planting pool is set between the hydrophilic trail and the green garden road to eliminate the height difference between the two. Connecting pipes are set in the primary buffer zone and the secondary buffer zone. The connecting pipes are connected to the rainwater pipes, and the tail ends of the rainwater pipes are connected to the sponge system. From the coastal waters to the urban plots, the municipal roads are composed of slow lanes, micro-topography slope green belts and motor vehicle lanes. The slow lanes and green garden roads are smoothly connected through the set-up secondary buffer zone, and the municipal roads are connected to the urban plots outside.

2. The ecological coastal zone super dike according to claim 1, characterized in that The wave-breaking prefabricated block is in a horizontal U-shape, with its opening facing the coastal waters. Bolt holes are arranged in the arc section, and positioning bolts are arranged in the bolt holes. The prefabricated wave-breaking block is fixed to the mortar-laid rubble wave-breaking wall through the positioning bolts.

3. The ecological coastal zone super dike according to claim 1, characterized in that The wave-breaking prefabricated blocks are connected to the embankment body by positioning bolts. Several wave-breaking prefabricated blocks are stacked from top to bottom. A limiting block is arranged on the top of the wave-breaking prefabricated blocks, a limiting hole is arranged on the bottom, a limiting block is arranged on one side wall, and a limiting hole is arranged on the other side wall. The upper and lower connected wave-breaking prefabricated blocks are connected by the limiting block on the top and the limiting hole on the bottom, and the left and right adjacent wave-breaking prefabricated blocks are connected by the limiting block and the limiting hole on the side wall.

4. The ecological coastal zone super dike according to claim 1, characterized in that The foot platform is constructed with riprap and clay, with the stone blocks weighing no less than 100kg; reeds and samphire tidal flat plants are planted at the bottom of the foot platform; both the primary and secondary buffer zones adopt a structure combining shrubs and turf, with dogtooth grass and tall fescue as the turf, and simple vine and pittosporum as the shrubs, serving as the urban waterfront landscape green space activity space; the stepped planting pool is prefabricated with reinforced concrete, and the pool is covered with planting soil with a thickness of 0.35 to 0.85 meters, and creepers are planted in the planting soil.

5. The ecological coastal zone super dike according to claim 1, characterized in that The upper part of the hydrophilic trail is a permeable brick pavement, and the lower part is graded gravel; the upper part of the green garden road is a colored permeable asphalt pavement, and the lower part is graded gravel; the slow lane is for pedestrians and non-motor vehicles, and the upper part of the pavement structure is a modified asphalt pavement, and the lower part is cement-stabilized gravel.

6. The ecological coastal zone super dike according to claim 1, characterized in that The planting soil in the micro-topography slope green belt is accumulated in the form of a convex small mound, and an anti-scouring reinforced ecological vegetation net mat is laid on the surface.

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