Stepped ecological frame revetment

Abstract

The invention relates to the technical field of river channel revetments, and discloses a stepped ecological frame revetment. According to the design of the stepped ecological frame bank protection structure, the ecological frame assemblies are arranged in a stepped mode in the direction perpendicular to a bank slope through the up-down built-in effect, the ecological frame assemblies are arranged according to the structure and piled up in the downstream water flow direction to form the bank protection structure, and a planting groove is formed in each ecological frame and used for planting river landscape plants and providing a habitat for animals. A plurality of permeable holes penetrating through the upper surface and the lower surface are formed in the ecological frame, and a three-dimensional water and soil protection blanket is laid on the permeable holes to prevent water and soil loss in the ecological frame. According to the ecological frame revetment, the multiple ecological frames are arranged in a step shape, the ecological frame revetment which is high in anti-scouring capacity, not prone to being eroded by water power, high in slope stability, good in use durability and low in maintenance cost is formed, material energy exchange between a water body and the land is promoted, the requirements for plant growth, animal inhabitation and water and soil exchange are met, and the ecological frame revetment is suitable for being popularized and applied. And collaborative optimization of bank protection and ecological restoration is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of river revetment, in particular to a stepped ecological frame revetment. BACKGROUND

[0002] As a core facility of water conservancy engineering and ecological protection, the main function of river revetment is to resist flood scouring to protect the stability of the bank slope. The traditional river revetment structure is mostly constructed by rigid materials (such as concrete, mortar stone, etc.), which has strong anti-scouring ability and structural stability, but has the following shortcomings:

[0003] 1. The hard revetment breaks the natural connection of the water-land ecosystem, leading to degradation of riparian vegetation and reduction of biological habitat;

[0004] 2. The rigid structure is difficult to adapt to the long-term effects of foundation settlement or water scouring, and is prone to cracking, collapse and other problems, with high maintenance cost;

[0005] 3. The traditional revetment lacks natural beauty and is difficult to coordinate and integrate with the surrounding ecological environment.

[0006] Therefore, ecological revetment is now used, which has obvious comprehensive benefits, can provide habitat for aquatic and terrestrial organisms, promote the integrity and diversity of the ecological system, and can also use the root absorption function of plants to enhance the self-purification ability of water. Although the traditional ecological revetment is better than the hard revetment in ecological friendliness, it still has some limitations, such as weak anti-scouring ability, easy to be eroded by water, poor slope stability, possible landslide or collapse, insufficient durability, high maintenance cost, and usually needs to be combined with engineering measures or new ecological technology to improve stability. SUMMARY

[0007] Therefore, the present application provides a stepped ecological frame revetment, which can solve the problems of weak anti-scouring ability, easy to be eroded by water, poor slope stability, possible landslide or collapse, insufficient durability and high maintenance cost of the existing ecological revetment, and can provide habitat and growth space for plants and animals, achieving the effect of ecological restoration and landscape construction.

[0008] In a first aspect, the present application provides a stepped ecological frame revetment, comprising: a plurality of ecological frame assemblies arranged in a stepped manner from top to bottom on the bank slope, each ecological frame assembly comprising a plurality of ecological frames arranged in sequence along the water flow direction, the ecological frame being provided with a plurality of water-permeable holes penetrating the upper and lower surfaces thereof, and the ecological frame being provided with a planting groove, the planting groove being suitable for planting plants.

[0009] Advantages

[0010] The plurality of ecological frames are arranged in a stepped manner to form an ecological frame revetment main structure with good stability. The ecological revetment has strong anti-scouring capacity, is not easily eroded by water force, has high slope stability, good durability, and low maintenance cost. Plants can be planted in the planting groove of the ecological frame, and the ecological frame can provide habitat for animals. The water-permeable holes provided on the ecological frame have good water permeability, promoting the exchange of matter and energy between water and land. The ecological frame revetment meets the needs of plant growth, animal habitat, and water-soil exchange, and realizes the collaborative optimization of revetment landscape construction and ecological restoration.

[0011] In an optional embodiment, the ecological frame is integrally poured and formed by reinforced concrete, and includes an upper fixed embedding part, a lower fixed embedding part, and a main frame part. The upper fixed embedding part is arranged on one end of the upper surface of the main frame part close to the bank slope. The lower fixed embedding part is arranged on one end of the lower surface of the main frame part close to the water flow. In two adjacent ecological frames from top to bottom, the lower fixed embedding part of the upper ecological frame is arranged on the upper surface of the main frame part of the lower ecological frame, and the lower fixed embedding part of the upper ecological frame is arranged on the side close to the water flow of the lower fixed embedding part of the lower ecological frame.

[0012] Advantages

[0013] The ecological frame can be precast and poured in advance, facilitating on-site construction and shortening the construction period. The upper and lower ecological frames can be arranged through the structural characteristics of the ecological frames, which is simple and reliable.

[0014] In an optional embodiment, the main frame part is formed with the planting groove, and the planting groove is provided with a three-dimensional protection blanket.

[0015] Advantages

[0016] The three-dimensional structure of the three-dimensional protection blanket can disperse the impact force of the water flow and reduce the direct scouring of rainwater or slope runoff on the soil. At the same time, the three-dimensional protection blanket can lock the surface soil particles and cooperate with the growth of plant roots to significantly improve the slope anti-sliding and anti-collapse capacity.

[0017] In an optional embodiment, the side wall of the planting groove is provided with a connecting hole, and adjacent two ecological frames in each group of ecological frame assemblies are connected through fasteners arranged in the corresponding two connecting holes.

[0018] Advantages

[0019] The two ecological frames can be connected through the connecting holes and fasteners, which is simple and stable and reliable.

[0020] In an alternative embodiment, the stepped ecological frame revetment further comprises a foundation assembly, wherein the foundation assembly comprises a revetment foundation, a base and a toe, the revetment foundation is arranged on the riverbed, the base is arranged on the revetment foundation, and the ecological frame assembly is arranged on the base, the toe is arranged on the revetment foundation and is located on the side of the base away from the bank slope.

[0021] In an alternative embodiment, the top end of the base is provided with a limiting ridge, and the side of the bottom layer of the ecological frame assembly facing the water flow is in abutment with the limiting ridge.

[0022] Advantages

[0023] By abutment of the limiting ridge and the ecological frame assembly, the displacement of the overall ecological frame is limited, ensuring the safety of the entire ecological frame revetment.

[0024] In an alternative embodiment, the stepped ecological frame revetment further comprises a filter assembly arranged between the ecological frame assembly and the bank slope.

[0025] In an alternative embodiment, the filter assembly comprises a filter geotextile and graded gravel, the filter geotextile is arranged on the bank slope, and the graded gravel is arranged between the filter geotextile and the ecological frame assembly.

[0026] Advantages

[0027] The arrangement of the filter assembly not only prevents soil particles from being lost to protect the stability of the structure, but also ensures the smooth flow of water to release the seepage pressure, taking into account the needs of water and soil exchange.

[0028] In an alternative embodiment, the stepped ecological frame revetment further comprises a flood prevention footpath arranged on the top surface of the bank slope.

[0029] In an alternative embodiment, the flood prevention footpath comprises, from bottom to top, a plain soil layer, a graded gravel layer, a concrete layer, a geotextile layer, a coarse sand leveling layer and a permeable brick layer.

[0030] Advantages

[0031] This flood prevention footpath has a composite multiple function: it not only guarantees the strength and impact resistance required for flood prevention through the concrete layer and the plain soil layer, but also realizes water permeability through the permeable brick and the coarse sand layer to reduce water accumulation, and the multi-layer structure design takes into account durability, ecological compatibility and construction convenience. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are only some of the embodiments of the present application, and all the other drawings obtained by those of ordinary skill in the art without creative work based on these drawings also belong to the protection scope of the present application.

[0033] Figure 1 A schematic view of a stepped ecological frame revetment of the present application;

[0034] Figure 2 A schematic view of the arrangement of ecological frames in a stepped ecological frame revetment of the present application;

[0035] Figure 3 A schematic view of ecological frames in a stepped ecological frame revetment of the present application;

[0036] Figure 4 A schematic view of the connection of two ecological frames in a stepped ecological frame revetment of the present application;

[0037] Figure 5 A schematic view of a flood prevention footpath in a stepped ecological frame revetment of the present application.

[0038] Explanation of reference signs:

[0039] 1, ecological frame, 11, water-permeable hole, 12, planting groove, 13, upper fixed embedding part, 14, lower fixed embedding part, 15, main frame part, 16, connecting hole;

[0040] 2, three-dimensional protective blanket;

[0041] 3, fastener;

[0042] 41, revetment foundation, 42, base, 421, limiting convex ridge, 43, toe protector;

[0043] 51, anti-filtration geotextile, 52, graded gravel;

[0044] 6, flood prevention footpath, 61, plain soil layer, 62, graded gravel layer, 63, concrete layer, 64, geotextile layer, 65, coarse sand leveling layer, 66, water-permeable brick layer;

[0045] 7, normal water level. DETAILED DESCRIPTION

[0046] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work also belong to the protection scope of the present application.

[0047] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0048] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0049] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as they do not conflict with each other.

[0050] The embodiments of the present application will be described below in conjunction with Figures 1 to 5 .

[0051] According to the embodiments of the present application, in one aspect, a stepped ecological frame 1 revetment is provided, comprising: a plurality of ecological frame assemblies arranged in a stepped manner from top to bottom on the slope, each ecological frame assembly comprising a plurality of ecological frames 1 arranged in sequence along the water flow direction, the ecological frame 1 being provided with a plurality of water-permeable holes 11 penetrating through its upper and lower surfaces, and the ecological frame 1 being provided with a planting groove 12, the planting groove 12 being suitable for planting plants.

[0052] As shown in Figure 1 , Figure 2 , the main structure of the ecological frame 1 revetment is arranged in a stepped manner by a plurality of ecological frame assemblies, forming a plurality of rising steps from bottom to top. The multi-stage steps can disperse the water flow energy, reduce the single-point scouring pressure, and at the same time, the stepped structure can also increase the friction with the slope, reduce the landslide risk, and improve the overall stability. Moreover, it can also provide habitat for animals.

[0053] Each set of eco-frame components includes a plurality of eco-frames 1, and two adjacent eco-frames 1 are arranged closely together, and can also be connected and fixed to each other. The planting troughs 12 on the eco-frames 1 can provide an environment for plant growth, and dog-head stones are generally set in the planting troughs 12 below the normal water level 7 of the river, and some terrestrial plants are planted in the planting troughs 12 above the normal water level 7. Plants and animals complement each other through material circulation, energy flow and ecological niche, significantly improving the efficiency of pollution purification, biodiversity restoration and the anti-interference ability of the ecosystem, so as to form an efficient and stable restoration model. A plurality of water-permeable holes 11 are also provided on the eco-frame 1, and the water-permeable holes 11 all pass through the upper and lower surfaces of the eco-frame 1, which is more conducive to water circulation and realizes water-soil exchange, that is, promotes the material and energy exchange between water and land.

[0054] This ecological frame 1 revetment offers excellent stability, strong scour resistance, resistance to hydraulic erosion, high slope stability, resistance to aging and loosening over long-term use, excellent durability, and low maintenance costs. It also simultaneously meets the needs of plant growth, animal habitat, and water and soil exchange, achieving synergistic optimization of revetment engineering and ecological restoration.

[0055] In one embodiment, the eco-frame 1 is cast as a whole of reinforced concrete, and includes an upper fixed embedded part 13 arranged on the end of the upper surface of the main frame body 15 close to the bank slope, and a lower fixed embedded part 14 arranged on the end of the lower surface of the main frame body 15 close to the water flow, and in the two adjacent eco-frames 1 above and below, the lower fixed embedded part 14 of the upper eco-frame 1 is placed on the upper surface of the main frame body 15 of the lower eco-frame 1, and the lower fixed embedded part 14 is located on the side of the lower fixed embedded part 14 of the lower eco-frame 1 close to the water flow.

[0056] Eco-Frame 1 is prefabricated, using pre-designed dimensions and cast in a factory using a mold to form a reinforced concrete frame. It is then transported to the construction site for installation, significantly speeding up construction and shortening the construction period.

[0057] like Figure 3 As shown, the shape of the eco-frame 1 is approximately "Z"-shaped, and includes an upper fixed embedded part 13, a lower fixed embedded part 14 and a main frame body 15. The upper fixed embedded part 13 and the lower fixed embedded part 14 are respectively arranged at both ends of the main frame body 15, but are located on different sides. A planting groove 12 is provided on the main frame body 15 for planting plants. Water holes 11 are provided on the upper surface of the upper fixed embedded part 13, the upper surface of the main frame body 15 and the bottom surface of the planting groove 12, and the water holes 11 are directly connected to the lower surface of the main frame body 15 and the lower surface of the lower fixed embedded part 14. The water permeability of the entire eco-frame 1 is good.

[0058] Specifically, in this embodiment, the water-permeable holes 11 are circular holes and are regularly arranged in rows and columns.

[0059] In other embodiments, the water-permeable holes 11 can also be square holes or other shapes, and the arrangement can also be irregular.

[0060] The upper and lower adjacent ecological frames 1 are arranged in a stepped manner. Specifically, the lower fixed embedding part 14 of the upper ecological frame 1 is arranged on the main frame part 15 of the lower ecological frame 1, i.e., between the upper fixed embedding part 13 and the planting groove 12, so as not to block the planting groove 12 and ensure normal growth of the plants. The main frame part 15 of the upper ecological frame 1 falls on the top surface of the upper fixed embedding part 13 of the lower ecological frame 1. The water-permeable holes 11 on the upper and lower ecological frames 1 are corresponding to each other to ensure overall water permeability.

[0061] In one embodiment, the main frame part 15 is formed with the planting groove 12, and the three-dimensional protective blanket 2 is arranged in the planting groove 12.

[0062] The three-dimensional protective blanket 2 is made of polyamide or other materials and is a three-dimensional structure flexible ecological water and soil protection material, which has good environmental protection and durability. The three-dimensional protective blanket 2 is suitable for planting plants and has the functions of preventing water and soil loss, promoting vegetation growth, and improving the ecological environment.

[0063] In one embodiment, the side wall of the planting groove 12 is provided with a connecting hole 16, and adjacent two ecological frames 1 in each ecological frame assembly are connected by fasteners 3 arranged in the corresponding two connecting holes 16.

[0064] The two side walls of the planting groove 12 of each ecological frame 1 are provided with connecting holes 16, and the connecting holes 16 penetrate the side walls of the ecological frame 1. In this embodiment, two connecting holes 16 are arranged on each side wall of the planting groove 12, and in other embodiments, a suitable number of connecting holes 16 can be selected according to the size of the ecological frame 1 or the planting groove 12.

[0065] As shown in Figure 4 After the two adjacent ecological frames 1 in the same layer are arranged closely, the connecting holes 16 are corresponding. The fastener 3 includes a screw rod and a nut, the screw rod is arranged in the two corresponding connecting holes 16 of the two ecological frames 1, and then the nut is arranged at both ends and tightened.

[0066] In other embodiments, the fastener 3 can also be a bolt and a nut, and the bolt can be arranged in the two connecting holes 16 and then fastened by the nut.

[0067] In one embodiment, the stepped ecological frame 1 revetment further includes a foundation assembly, which includes a revetment foundation 41, a base 42, and a toe 43. The revetment foundation 41 is arranged on the riverbed, the base 42 is arranged on the revetment foundation 41, and the ecological frame assembly is arranged on the base 42. The toe 43 is arranged on the revetment foundation 41 and is located on the side of the base 42 away from the shore slope.

[0068] The lower part of the revetment foundation 41 is a pile body inserted into the riverbed, and the upper part is a block structure arranged on the pile body. The base 42 is a cast-in-place reinforced concrete base arranged on the revetment foundation 41. The toe 43 is also a block structure of poured stones arranged on the pile body and located away from the shore slope on one side of the base 42, that is, the side of the toe 43 away from the base 42 is the river channel. The normal water level 7 of the river channel is located above the toe 43, and part of the ecological frame 1 is also in the water. The dog head stone is arranged in this part of the ecological frame 1, and plants are arranged in the remaining ecological frames 1.

[0069] In one embodiment, the top end of the base 42 is provided with a limiting convex ridge 421, and the side of the bottom layer of ecological frame assemblies facing the water flow abuts against the limiting convex ridge 421.

[0070] The top end of the base 42 is in the shape of an inverted “L”, and the bottom layer of ecological frame assemblies abuts against the limiting convex ridge 421. The arrangement of the limiting convex ridge 421 can limit the ecological frame 1, limit the sliding of the entire ecological frame 1, and ensure the safety of the entire ecological frame 1 revetment.

[0071] In one embodiment, the stepped ecological frame 1 revetment further comprises a filter assembly arranged between the ecological frame assembly and the shore slope.

[0072] The arrangement of the filter assembly not only prevents soil particles from being lost to protect the stability of the structure, but also ensures the smooth flow of water to release the seepage pressure, and meets the needs of water and soil exchange.

[0073] In one embodiment, the filter assembly comprises a filter geotextile 51 and a graded gravel 52, the filter geotextile 51 is arranged on the shore slope, and the graded gravel 52 is arranged between the filter geotextile 51 and the ecological frame assembly.

[0074] The filter geotextile 51 is directly arranged on the shore slope and in contact with the soil. The filter geotextile 51 separates soil particles and liquid through a physical penetration mechanism to prevent soil particles from being lost. The design of the equivalent aperture and the permeability coefficient ensures that fine particles are trapped when water flows, forming a “natural filter layer” to effectively prevent piping and seepage.

[0075] The filter geotextile 51 generally uses polyester short fibers, polypropylene split film silk and other polyester high molecular polymer fibers, which are processed by needle punching or weaving process. It has good puncture resistance and corrosion resistance.

[0076] The graded gravel 52 is mixed by different particle size gravels in proportion to form a continuous pore structure, which has water permeability. Moreover, through the interlocking action between particles, the load pressure is dispersed, and the structural stability is enhanced. In addition, it can also provide space for plant root growth and promote ecological restoration.

[0077] When used in combination, the graded gravel 52 allows water to quickly infiltrate, while the geotextile 51 ensures that fine particles (such as soil particles) are trapped when water flows through, preventing soil loss.

[0078] In one embodiment, the stepped ecological frame 1 revetment further comprises a flood control footpath arranged on the top surface of the slope.

[0079] The flood control footpath 6 is arranged at the top of the slope, which can monitor water levels, dredge floodwater, reinforce the embankment, plant vegetation, and build platforms for leisure. It also serves as an escape route and a rapid deployment of resources, integrating flood control, ecology, and emergency functions.

[0080] In one embodiment, the flood control footpath 6 comprises, from bottom to top, a plain soil layer 61, a graded gravel layer 62, a concrete layer 63, a geotextile layer 64, a coarse sand leveling layer 65, and a permeable brick layer 66.

[0081] Specifically, the plain soil layer 61 is undisturbed soil or naturally compacted ground, which serves as a foundation bearing layer to provide overall bearing capacity, disperse upper structure load, and prevent uneven settlement.

[0082] The graded gravel layer 62 is formed by mixing different sizes of gravel (such as 5-10mm, 10-20mm, 20-40mm) in proportion to form a continuous pore structure. As a permeable buffer layer, it has good water permeability and stress dispersion effect.

[0083] The concrete layer 63 is usually made of reinforced concrete or plain concrete with a strength grade of C20-C30. It serves as a structural support layer to provide rigid support and withstand pedestrian and vehicle loads, preventing deformation and cracking of the footpath.

[0084] The geotextile layer 64 is made of polyester or polypropylene filament needle-punched non-woven geotextile. It serves as a barrier layer to prevent fine particles from entering the coarse sand leveling layer 65 through cracks in the concrete layer 63, preventing drainage channels from being blocked. It also has a filtering effect, allowing water to pass through but trapping soil particles.

[0085] The coarse sand leveling layer 65 uses natural sand or machine-made sand with a particle size of 0.5-2mm. It serves as a transition leveling layer to fill in uneven places on the surface of the concrete layer 63, providing a flat base for the permeable brick layer 66 and ensuring uniform brick joints. As a permeable transition layer, it helps rainwater quickly penetrate the lower structure, avoiding surface runoff. It also buffers the impact of upper loads on the concrete layer 63, extending the service life of the structure.

[0086] The permeable brick layer 66 uses ceramic permeable bricks, concrete permeable bricks, or recycled aggregate permeable bricks. It has good water permeability and reduces the surface runoff coefficient. Its surface roughness must meet the safety requirements of pedestrians.

[0087] While embodiments of the application have been described in connection with the preferred embodiments of the various figures, those of ordinary skill in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the application, and that such modifications and changes fall within the scope of the appended claims.

Claims

1. A stepped ecological frame revetment, characterized in that: include: A plurality of groups of ecological frame components are arranged on a bank slope in a stepped manner from top to bottom, each group of the ecological frame components comprises a plurality of ecological frames (1) arranged in sequence along a water flow direction, the ecological frames (1) are provided with a plurality of water-permeable holes (11) penetrating the upper and lower surfaces thereof, and the ecological frames (1) are provided with planting grooves (12), wherein the planting grooves (12) are suitable for planting plants.

2. The stepped ecological frame revetment according to claim 1 is characterized in that: The ecological frame (1) is cast in one piece of reinforced concrete and comprises an upper fixed embedded portion (13), a lower fixed embedded portion (14) and a main frame portion (15). The upper fixed embedded portion (13) is arranged on an end of the upper surface of the main frame portion (15) close to the bank slope, and the lower fixed embedded portion (14) is arranged on an end of the lower surface of the main frame portion (15) close to the water flow. In addition, in two upper and lower adjacent ecological frames (1), the lower fixed embedded portion (14) of the upper ecological frame (1) is placed on the upper surface of the main frame portion (15) of the lower ecological frame (1), and the lower fixed embedded portion (14) is located on the side of the lower fixed embedded portion (14) of the lower ecological frame (1) close to the water flow.

3. The stepped ecological frame revetment according to claim 2 is characterized in that: The main frame portion (15) is formed with the planting groove (12), and a three-dimensional protective blanket (2) is provided in the planting groove (12).

4. The stepped ecological frame revetment according to claim 3 is characterized in that: The side wall of the planting trough (12) is provided with a connection hole (16), and two adjacent ecological frames (1) in each group of the ecological frame components are connected via fasteners (3) provided in the two corresponding connection holes (16) thereon.

5. The stepped ecological frame revetment according to claim 1 is characterized in that: The invention also includes a foundation component, which includes: a bank protection foundation (41), a base (42) and a foot guard (43). The bank protection foundation (41) is arranged on the riverbed, the base (42) is arranged on the bank protection foundation (41), and the ecological frame component is arranged on the base (42). The foot guard (43) is arranged on the bank protection foundation (41) and is located on the side of the base (42) away from the bank slope.

6. The stepped ecological frame revetment according to claim 5 is characterized in that: A limiting convex ridge (421) is provided at the top of the base (42), and a group of the ecological frame components located at the bottom layer abut against the limiting convex ridge (421) on the side facing the water flow.

7. The stepped ecological frame revetment according to claim 1 is characterized in that: It also includes an anti-filtration component arranged between the ecological frame component and the bank slope.

8. The stepped ecological frame revetment according to claim 7 is characterized in that: The filter assembly comprises a filter geotextile (51) and graded crushed stone (52), wherein the filter geotextile (51) is arranged on the bank slope, and the graded crushed stone (52) is arranged between the filter geotextile (51) and the ecological frame assembly.

9. The stepped ecological frame revetment according to claim 1 is characterized in that: It also includes a flood prevention trail (6) arranged on the top surface of the bank slope.

10. The stepped ecological frame revetment according to claim 9 is characterized in that: The flood prevention walkway (6) comprises a plain soil layer (61), a graded crushed stone layer (62), a concrete layer (63), a geotextile layer (64), a coarse sand leveling layer (65) and a permeable brick layer (66) which are arranged in sequence from bottom to top.

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