Ecological bank protection section structure suitable for turning section of river channel
By combining slope toe erosion prevention, ecological slope protection, and vegetation buffering structures at river bends, the problems of riverbank collapse and ecological degradation caused by water flow erosion at river bends have been solved, achieving riverbank stability and ecological beautification.
Patent Information
- Application Number
- CN202520234777.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-02-14
AI Technical Summary
In river bends, existing ecological revetment methods are easily damaged by strong water flow and are difficult to maintain the stability and aesthetics of the river ecosystem. Existing technologies cannot effectively resist water flow erosion, leading to riverbank collapse and ecological degradation.
The system employs a combination of slope toe erosion protection structure, ecological slope protection structure, and slope top vegetation buffer structure, including concrete foundation, masonry slope protection, ecological bags, geogrid, and vegetation buffer green belt, to form a multi-layer bank protection system that enhances erosion resistance and promotes ecological restoration.
It effectively resists the erosion of water flow at river bends, protects the stability of riverbanks, enhances the health of the ecosystem, beautifies the environment, extends the lifespan of the revetment structure, and reduces construction costs.
Smart Images
Figure CN223824114U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of water conservancy engineering technology, and specifically relates to an ecological revetment section structure suitable for river bends. Background Technology
[0002] In river management projects, the outer bank of a river bend is subject to greater scouring due to the centrifugal force of the water flow, which can easily lead to problems such as bank collapse and soil erosion, seriously affecting the stability of the river and the ecological environment.
[0003] Existing riverbank protection methods, such as rigid concrete revetments and masonry revetments, while offering some protection against water erosion, obstruct the exchange of matter and energy between the river channel and its banks, damaging the river's ecosystem, reducing biodiversity, decreasing the water's self-purification capacity, and resulting in poor aesthetics—all failing to meet the requirements of modern ecological water management. Ecological riverbank protection technology emphasizes the harmonious coexistence of human activities and the natural environment. By simulating natural processes and utilizing ecological materials and methods, it constructs green, harmonious, and sustainable riverbank ecosystems. Ecological riverbank protection projects employ engineering and ecological technologies to protect and restore the river's ecological environment, ensuring that engineering construction is coordinated with the surrounding environment and promoting the self-recovery and sustainable development of the riverbank ecosystem. In recent years, some ecological riverbank protection methods, such as vegetated revetments and geogrid revetments, have been gradually applied to river management. However, these methods still present some challenges in their application in river bends. For example, under strong water flow, the root system of vegetation in vegetation revetments is easily eroded, leading to damage to the revetment structure; geogrid revetments have poor adaptability in bends, making it difficult to effectively disperse the impact of water flow, and are prone to aging and damage after long-term use. Utility Model Content
[0004] To address the aforementioned problems, the purpose of this utility model is to provide an ecological revetment section structure suitable for river bends. By sequentially arranging a slope toe erosion prevention structure, an ecological slope protection structure, and a slope top vegetation buffer structure from the inside to the outside of the river, the erosion resistance of the river bend section can be effectively enhanced, while also exhibiting good ecological performance and promoting the healthy development of the river ecosystem.
[0005] The technical solution of this utility model is as follows: an ecological revetment cross-section structure suitable for river bends, comprising a slope toe erosion prevention structure, an ecological slope protection structure, and a slope top vegetation buffer structure arranged sequentially from the inner side of the river to the outer side. The slope toe erosion prevention structure includes a concrete foundation located at the bottom of the river, with a masonry slope protection structure above it. The ecological slope protection structure includes ecological bags and geogrids. The geogrids are laid on top of the masonry slope protection, forming a geogrid grid along the slope surface. The geogrid grid contains filling material, and ecological bags are stacked on the outside of the filling material. The ecological bags are filled with nutrient soil suitable for plant growth and plant seeds. The slope top vegetation buffer structure includes a concrete coping set on top of the ecological slope protection structure. A vegetation buffer green belt is set on the concrete coping, and herbaceous plants and shrubs are planted in the vegetation buffer green belt.
[0006] The strength of the masonry slope protection material shall not be less than 30 MPa.
[0007] The tensile strength of the geogrid is not less than 20kN / m. The geogrid is laid horizontally, and the spacing between adjacent geogrids is 30~50 cm. Adjacent geogrids are connected by overlapping, with an overlap length of not less than 15 cm, and are fixed to the slope with U-shaped nails. The spacing between fixing points is not greater than 1 meter.
[0008] The filling material is a mixture of crushed stone and soil with a particle size range of 20-50mm, and the volume ratio of crushed stone to soil is 3:2.
[0009] The width of the concrete capping shall not be less than 30 cm and the thickness shall not be less than 10 cm.
[0010] The eco-bags are made of biodegradable and environmentally friendly materials. The specific dimensions of the eco-bags are 60cm long × 40cm wide × 20cm high. The nutrient soil inside the eco-bags contains water-retaining agents and fertilizers. The eco-bags are connected to each other by buckles.
[0011] The ecological slope protection structure is also equipped with multiple drainage pipes and drainage holes. The drainage holes are spaced 3-5m apart, with a diameter of 5-10cm. The drainage holes are inclined towards the river channel with a slope of 5%-10%.
[0012] A crushed stone cushion layer is provided below the concrete foundation, and multiple slope drainage pipes are provided above the concrete foundation. The slope drainage pipes are located above the original ground line. Geotextile is installed inside the end of the slope drainage pipe away from the river channel. The horizontal spacing between adjacent slope drainage pipes is greater than 100cm. The concrete foundation extends into the bottom of the river channel to a depth of not less than 1 meter. An expansion joint is left every 10m of the concrete foundation. The expansion joint is 2cm wide and filled with polyethylene closed-cell foam board.
[0013] The technical effects of this utility model are as follows: 1. This utility model, through the synergistic effect of the slope top vegetation buffer structure, ecological slope protection structure, and erosion protection structure, can effectively resist the erosion of river flow in the bend section, protect the stability of the riverbank. The various structural components are interconnected and mutually supportive, forming an integrated bank protection system. The geogrid enhances the stability of the slope protection structure, and the connection between the ecological bags and their cooperation with the geogrid ensures the integrity of the ecological slope protection structure. The concrete capping further protects the top of the ecological slope protection structure, making the entire bank protection structure more stable and reliable. The overall structure combines various materials and structural forms, possessing good permeability, erosion resistance, and ecological properties, while being convenient to construct and low in cost. 2. This utility model, through the vegetation buffer green belt in the slope top vegetation buffer structure, plants herbaceous plants and shrubs, beautifying the surrounding environment, harmonizing the bank protection structure with the natural landscape, improving the landscape quality around the river, and providing people with a more comfortable living environment. 3. The geogrid, filling material, and ecological bags in the ecological slope protection structure of this utility model work together to create favorable conditions for plant growth. The plant roots within the eco-bags penetrate deep into the soil, not only reinforcing the slope but also promoting the exchange of substances between water, soil, and organisms, purifying water quality, improving the river's ecological environment, and restoring the river's ecosystem. 4. This utility model's slope toe erosion protection structure adopts a masonry slope protection method with a buried stone concrete foundation, effectively resisting the strong erosion of water flow at river bends, enhancing the stability of the bank protection structure, reducing the risk of riverbank collapse and soil erosion, and extending the service life of the bank protection.
[0014] The following will provide further explanation in conjunction with the accompanying drawings. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of an ecological revetment cross-section structure applicable to river bends according to this utility model.
[0016] Figure 2 This is a schematic diagram of the shape of a single eco-bag of this utility model.
[0017] Figure 3 This is a front view of the arrangement of ecological bags in the ecological slope protection structure of this utility model.
[0018] Figure 4 This is a top view of the arrangement of ecological bags in the ecological slope protection structure of this utility model.
[0019] Figure 5 This is a slope layout diagram of the geogrid of this utility model.
[0020] Figure 6 This is a schematic diagram of the U-shaped nail of this utility model.
[0021] Figure 7This is a three-dimensional structural diagram of the slope toe anti-erosion structure of this utility model.
[0022] Figure 8 This is a schematic diagram of the anti-scouring structure at the toe of the slope of this utility model.
[0023] Attached reference numerals: 1-Slope top vegetation buffer structure, 11-Herbaceous plants, 12-Shrubs, 13-Concrete coping; 2-Ecological slope protection structure, 21-Ecological bags, 22-Geogrid, 23-Filling material, 24-Drainage pipe; 25-U-shaped nail; 3-Masonry slope protection; 4-Slope toe erosion control structure, 41-Geotextile, 42-Slope toe drainage pipe, 43-Crushed stone cushion layer; 44-Concrete foundation; 45-Rock backfill; 5-Original ground line. Detailed Implementation Example 1
[0024] like Figures 1-8 As shown, an ecological revetment cross-section structure suitable for river bends includes a slope toe erosion control structure 4, an ecological slope protection structure 2, and a slope top vegetation buffer structure 1 arranged sequentially from the inside to the outside of the river channel. The slope toe erosion control structure 4 includes a concrete foundation 44 located at the bottom of the river channel, with a masonry slope protection 3 above it. The ecological slope protection structure 2 includes ecological bags 21 and geogrids 22. The geogrids 22 are laid on top of the masonry slope protection 3, forming a geogrid grid along the slope surface. The geogrid grid contains filling material 23, and ecological bags 21 are stacked on the outside of the filling material 23. The ecological bags 21 are filled with nutrient soil suitable for plant growth and plant seeds. The slope top vegetation buffer structure 1 includes a concrete coping 13 set on top of the ecological slope protection structure 2. A vegetation buffer green belt is set on the concrete coping 13, and herbaceous plants 11 and shrubs 12 are planted in the vegetation buffer green belt.
[0025] This utility model effectively resists the scouring of river flow in the bend section by the synergistic effect of the slope top vegetation buffer structure, ecological slope protection structure, and scour protection structure, thus protecting the stability of the riverbank. The various structural components are interconnected and mutually supportive, forming an integrated bank protection system. The geogrid 22 enhances the stability of the slope protection structure, and the connection between the ecological bags 21 and their cooperation with the geogrid 22 ensures the integrity of the ecological slope protection structure. The concrete capping 13 further protects the top of the ecological slope protection structure 2, making the entire bank protection structure more stable and reliable. The overall structure combines various materials and structural forms, possessing good permeability, scour resistance, and ecological properties, while also being convenient to construct and cost-effective. Example 2
[0026] Based on Example 1, in this example, preferably, the strength of the masonry slope protection 3 is not less than 30 MPa.
[0027] The stone strength of the masonry slope protection 3 described in this utility model is not less than 30 MPa. The masonry slope protection can effectively improve the stability of the bank and enhance its impact resistance. The masonry protection combined with the concrete foundation reinforcement measures form an anti-scour layer with the concrete foundation and the masonry slope protection. The anti-scour protection structure can further resist water scour and protect the ecological bank protection structure. Example 3
[0028] Based on Embodiment 1 or Embodiment 2, in this embodiment, preferably, the tensile strength of the geogrid 22 is not less than 20kN / m, the geogrid 22 is laid horizontally, the spacing between adjacent geogrids 22 is 30~50 cm, adjacent geogrids 22 are connected by overlapping, the overlap length is not less than 15 cm, and they are fixed on the slope with U-shaped nails 25, the spacing between the fixing points is not greater than 1 meter.
[0029] The geogrid 22 of this utility model has a tensile strength of not less than 20kN / m. The geogrid 22 is laid horizontally, and the spacing between adjacent geogrids 22 is 30~50 cm. Adjacent geogrids 22 are connected by overlapping, with an overlap length of not less than 15 cm. They are fixed to the slope with U-shaped nails 25, with the spacing between fixing points not greater than 1 meter, to restrict the movement of the filling material and to enhance the anti-sliding stability of the ecological slope protection structure. Example 4
[0030] Based on Example 1 or Example 3, in this embodiment, preferably, the filling material 23 is a mixture of crushed stone and soil with a particle size range of 20~50mm, and the volume ratio of crushed stone to soil is 3:2.
[0031] The filling material 23 of this invention is a mixture of gravel and soil with a particle size range of 20~50mm. The volume ratio of gravel to soil is 3:2, which can effectively disperse the impact force of water flow, protect the riverbank slope, and provide good conditions for plant growth. Example 5
[0032] Based on Example 1 or Example 4, in this example, preferably, the width of the concrete capping 13 is not less than 30 cm and the thickness is not less than 10 cm.
[0033] The concrete capping 13 of this invention has a width of not less than 30 cm and a thickness of not less than 10 cm, which can prevent the soil at the top of the slope from collapsing and protect the ecological slope protection structure. A vegetation buffer green belt is set on the upper side of the concrete capping, planted with herbaceous plants and shrubs. These plants can absorb rainwater, reduce surface runoff, further reinforce the soil at the top of the slope, and beautify the surrounding environment, blending with the natural landscape. Example 6
[0034] Based on Example 1 or Example 5, in this example, preferably, the ecological bag 21 is made of biodegradable environmentally friendly material, and the specific dimensions of the ecological bag 21 are 60cm long × 40cm wide × 20cm high. The nutrient soil inside the ecological bag 21 contains water-retaining agent and fertilizer, and the ecological bags 21 are connected to each other by connecting buckles.
[0035] This utility model's ecological bags are filled with nutrient soil and plant seeds suitable for plant growth. The ecological bags are interconnected, further enhancing the stability and ecological nature of the slope protection structure. Example 7
[0036] Based on Embodiment 1 or Embodiment 6, in this embodiment, preferably, the ecological slope protection structure 2 is further provided with multiple drainage pipes 24 and drainage holes, the drainage holes are spaced 3-5m apart, the diameter of the drainage holes is 5-10cm, and the drainage holes are inclined towards the river channel with a slope of 5%-10%.
[0037] The ecological slope protection structure 2 of this utility model is also provided with multiple drainage pipes 24 and drainage holes. The drainage holes are spaced 3-5m apart, and the diameter of the drainage holes is 5-10cm. The drainage holes are inclined towards the river channel with a slope of 5%-10%, which ensures the drainage effect and enhances the structural stability of the ecological slope protection structure. Example 8
[0038] Based on Embodiment 1 or Embodiment 7, in this embodiment, preferably, a crushed stone cushion layer 43 is provided below the concrete foundation 44, and rubble backfill 45 is provided inside the concrete foundation 44. Multiple slope drainage pipes 42 are provided above the concrete foundation 44. The slope drainage pipes 42 are located above the original ground line 5. Geotextile 41 is provided inside the end of the slope drainage pipe 42 away from the river channel. The horizontal spacing between adjacent slope drainage pipes 42 is greater than 100cm. The concrete foundation 44 penetrates to the bottom of the river channel to a depth of not less than 1 meter. An expansion joint is left every 10m of the concrete foundation 44. The expansion joint is 2cm wide and filled with polyethylene closed-cell foam board.
[0039] The concrete foundation 44 of this invention extends at least 1 meter into the riverbed to enhance stability and resist scouring of the slope toe by water flow. The concrete foundation is made of embedded stone concrete with a frost resistance requirement of F200. The embedded stone ratio is 25% ± 5% (by volume), with stone particle size of 10–30 cm, a square shape, and free of soil and other debris. Expansion joints, 2 cm wide, are provided every 10 m of the concrete foundation, filled with materials such as closed-cell polyethylene foam board. Settlement joints are provided where the soil conditions change; combining expansion joints and settlement joints may be considered. A slope toe drainage pipe is installed within the concrete foundation, containing geotextile filter material to drain groundwater and prevent the riverbank soil from softening and becoming unstable due to water accumulation.
[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.
Claims
1. An ecological revetment cross-sectional structure suitable for river bends, characterized in that: The structure includes a slope toe erosion control structure (4), an ecological slope protection structure (2), and a slope top vegetation buffer structure (1), arranged sequentially from the inner side of the river channel to the outer side. The slope toe erosion control structure (4) includes a concrete foundation (44), which is located at the bottom of the river channel and has a masonry slope protection structure (3) above it. The ecological slope protection structure (2) includes an ecological bag (21) and a geogrid (22), which is laid on top of the masonry slope protection structure (3) to form a geogrid along the slope surface. The geogrid grid has filling material (23) inside, and ecological bags (21) are stacked on the outside of the filling material (23). The ecological bags (21) are filled with nutrient soil suitable for plant growth and plant seeds. The slope top vegetation buffer structure (1) includes a concrete capping (13) set on the top of the ecological slope protection structure (2). A vegetation buffer green belt is set on the concrete capping (13). Herbaceous plants (11) and shrubs (12) are planted in the vegetation buffer green belt.
2. The ecological revetment cross-section structure suitable for river bends according to claim 1, characterized in that: The strength of the masonry slope protection (3) is not less than 30 MPa.
3. The ecological revetment cross-section structure suitable for river bends according to claim 1, characterized in that: The tensile strength of the geogrid (22) is not less than 20kN / m. The geogrid (22) is laid horizontally. The spacing between adjacent geogrids (22) is 30~50 cm. Adjacent geogrids (22) are connected by overlapping. The overlap length is not less than 15 cm. They are fixed on the slope with U-shaped nails (25). The spacing between the fixing points is not greater than 1 meter.
4. The ecological revetment cross-section structure suitable for river bends according to claim 1, characterized in that: The filling material (23) is a mixture of gravel and soil with a particle size range of 20~50mm, and the volume ratio of gravel to soil is 3:
2.
5. The ecological revetment cross-section structure suitable for river bends according to claim 1, characterized in that: The width of the concrete capping (13) shall not be less than 30 cm and the thickness shall not be less than 10 cm.
6. The ecological revetment cross-section structure suitable for river bends according to claim 1, characterized in that: The eco-bag (21) is made of biodegradable environmentally friendly material. The specific dimensions of the eco-bag (21) are 60cm long × 40cm wide × 20cm high. Water-retaining agent and fertilizer are added to the nutrient soil inside the eco-bag (21). The eco-bags (21) are connected to each other by connecting buckles.
7. The ecological revetment cross-section structure suitable for river bends according to claim 1, characterized in that: The ecological slope protection structure (2) is also equipped with multiple drainage pipes (24) and drainage holes. The drainage holes are spaced 3-5m apart, with a diameter of 5-10cm. The drainage holes are inclined towards the river channel with a slope of 5%-10%.
8. The ecological revetment cross-section structure suitable for river bends according to claim 1, characterized in that: The concrete foundation (44) is provided with a crushed stone cushion layer (43) below it. Multiple slope drainage pipes (42) are provided above the concrete foundation (44). The slope drainage pipes (42) are located above the original ground line (5). Geotextile (41) is provided in the end of the slope drainage pipe (42) away from the river. The horizontal distance between adjacent slope drainage pipes (42) is greater than 100cm. The concrete foundation (44) penetrates into the bottom of the river to a depth of not less than 1 meter. Expansion joints are left every 10m of the concrete foundation (44). The expansion joints are 2cm wide and filled with polyethylene closed-cell foam boards.