An ecological slope protection repair structure and method for high and steep slope

Abstract

The present application relates to the technical field of ecological restoration, and discloses an ecological slope protection restoration structure and method for high and steep slopes, wherein the restoration structure is an integrated structure composed of an inner cylinder unit and an outer cylinder unit, the inner cylinder unit and the outer cylinder unit are arranged in a V shape, and both are composed of a plurality of cylinders, the cylinders of the inner cylinder unit and the cylinders of the outer cylinder unit correspond to each other, and are connected at one end close to each other and open at one end far away from each other, the plane where the end far away from the outer cylinder unit of the inner cylinder unit is located is a cement bonding surface, and the restoration structure is fixed on the rock slope through a fixing member; the restoration structure is fixed on the slope surface of the rock slope through anchoring and cement bonding, and will not have problems such as structure cracking, and can be applied to high and steep slopes with a slope of 65-90° or even vertical slopes; the restoration structure can fill nutrient soil in the V-shaped channel, significantly improve the soil bearing capacity of the slope surface, provide a stable and long-lasting growth environment for plants, and realize long-acting ecological restoration of the slope.

Description

Technical Field

[0001] This invention relates to the field of ecological restoration technology, and in particular to an ecological slope protection and restoration structure and method for steep slopes. Background Technology

[0002] The large-scale development of transportation infrastructure, water conservancy and hydropower projects, and urban slope stabilization has created numerous steep rock slopes with gradients of 65-90°. These slopes have exposed rock masses, well-developed structural surfaces, and harsh site conditions, making them prone to geological disasters such as landslides and collapses.

[0003] Existing ecological restoration methods for steep rock slopes mainly consist of thick-layer substrate greening structures and vegetation concrete spraying slope protection structures. Both technologies combine slope protection and vegetation reconstruction by artificially reconstructing the vegetation matrix layer on the slope. However, they both have significant technical shortcomings in ultra-steep rock slope scenarios of 65-90°, making it difficult to meet the dual requirements of engineering safety and long-term ecological restoration. Specific problems are as follows:

[0004] First, it has poor slope adaptability and cannot be used on steep slopes of 65-90°. Thick-layer substrate greening structures cannot overcome the gravity effects brought by steep slopes and their own weight. The main reason for the vegetation concrete spraying slope protection structure is that the amount of cement used in vegetation concrete is currently low, resulting in low strength. This makes vegetation concrete prone to problems such as falling off and cracking after spraying on steep rock slopes.

[0005] Secondly, under the influence of heavy rain, erosion and even secondary geological disasters such as collapses and landslides are likely to occur. For thick-layer substrate greening structures, the bonding effect between the substrate and the rock mass is poor, which can easily cause the entire substrate to slide down. At the same time, its erosion resistance is also poor. Under the erosion of heavy rain, rainwater will collect and form flood channels, causing the loss of soil and nutrients. For vegetation concrete sprayed slope protection structures, when encountering continuous drought or freeze-thaw weather, the freeze-swelling of water in the soil can cause the vegetation concrete to crack, which can lead to gully erosion, sheet erosion, or even collapse under heavy rain.

[0006] In addition, the small amount of soil to support the soil and the soil moisture being easily affected by vertical gravity lead to a large difference in moisture between the upper and lower parts, resulting in uneven vegetation restoration and failing to achieve the goal of long-term restoration. Summary of the Invention

[0007] In view of the shortcomings of existing technologies, the purpose of this invention is to provide an ecological slope protection and restoration structure and method for steep slopes, which can be applied to steep slopes with a slope of 65-90° and even vertical slopes.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0009] Firstly, an ecological slope protection and restoration structure for high and steep slopes includes a restoration structure. The restoration structure is an integrated structure composed of an inner cylinder unit and an outer cylinder unit. The inner cylinder unit and the outer cylinder unit are arranged in a V-shape and each is composed of multiple cylinders. The cylinders of the inner cylinder unit and the outer cylinder unit correspond one-to-one, and are connected at one end close to each other and open at the other end far away from each other. The plane at the end of the inner cylinder unit away from the outer cylinder unit is a cement bonding surface. The restoration structure is fixed to the rock slope by fasteners.

[0010] As a further implementation, the inner cylinder unit is composed of multiple inner cylinders, and the outer cylinder unit is composed of multiple outer cylinders;

[0011] The number of inner and outer cylinders is the same, and the inner and outer cylinders correspond one-to-one. The ends of the inner and outer cylinders that are close to each other are connected. After the inner and outer cylinders are connected, a V-shaped channel is formed inside.

[0012] As a further implementation, the multiple cylinders on the inner cylinder unit and the outer cylinder unit are arranged in a honeycomb pattern;

[0013] The opening at the end of the outer cylinder away from the inner cylinder is a planting hole, and the V-shaped channel is a space for filling with nutrient soil.

[0014] As a further implementation, both the inner cylinder and the outer cylinder have hexagonal cross-sectional shapes;

[0015] The multiple inner cylinders are parallel to each other, and the multiple outer cylinders are parallel to each other.

[0016] As a further implementation, the thickness of the outer cylinder unit is greater than the thickness of the inner cylinder unit.

[0017] As a further implementation, the repair structure is a modular structure as a whole.

[0018] As a further implementation, the V-shaped channel is filled with nutrient soil.

[0019] As a further implementation, the repair structure is fixed to the rock slope by expansion bolts and pressure plates.

[0020] As a further implementation, the included angle between the inner cylinder unit and the outer cylinder unit is 90°.

[0021] Secondly, an ecological slope protection and restoration method for steep slopes, employing any of the ecological slope protection and restoration structures described above, includes the following steps:

[0022] S1: Prefabricated repair structural components;

[0023] S2: Clean the surface of the rock slope, remove and level the protruding parts of the rock slope surface, and backfill and compact the larger depressions on the rock slope surface in layers to ensure that there are no obvious defects on the rock slope surface and achieve a flat rock slope surface.

[0024] S3: Scan the surface of the rock slope with a scanner and generate an overall image. Divide the overall image into square modules. Determine the location and required quantity of the repair structure based on the planned square modules. Drill holes at the four corners of the repair structure, with the hole size matching the diameter of the expansion bolts.

[0025] Holes were drilled at the four corners of the corresponding repair structure on the rock slope surface to facilitate the installation of expansion bolts; similar holes were drilled at other corresponding locations on the rock slope surface to allow plants to take root in the rock slope.

[0026] S4: Fix the repair structure, apply a cement bonding layer to the cement bonding surface inside the repair structure, and then fix the repair structure with expansion bolts and pressure plates. The ends of the expansion bolts are fixed inside the rock slope.

[0027] S5: Fill the soil by filling the V-shaped channel with fluid nutrient soil and partially filling the openings on the surface of the rock slope. Plant seeds in the nutrient soil are close to the planting holes, and then maintenance is carried out.

[0028] The beneficial effects of the present invention are as follows:

[0029] 1. The repair structure of this invention is a prefabricated component, which is fixed to the slope surface of the rock slope by anchoring and cement bonding. It will not cause problems such as structural cracking and can be applied to steep slopes of 65-90° and even vertical slopes. By arranging the repair structure on the slope surface of the rock slope, nutrient soil can be filled into the V-shaped channel, which can significantly increase the soil bearing capacity of the slope surface, provide a more stable and lasting growth environment for plants, and thus achieve long-term ecological restoration of steep rock slopes and even vertical slopes.

[0030] 2. This invention not only overcomes the limitations of traditional repair technologies in adapting to slope, but also enhances the erosion resistance and durability of the repair system by optimizing structural design and material ratio, effectively preventing the occurrence of secondary geological disasters.

[0031] 3. The V-shaped channel arrangement of this invention effectively alleviates the problem of uneven vertical distribution of water and nutrients caused by gravity, ensuring uniform growth and long-term survival of vegetation. Attached Figure Description

[0032] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0033] Figure 1 This is a schematic diagram of the ecological slope protection and restoration structure in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the repair structure in an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the left side structure of the repair structure in an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the side cross-section of the rock slope and the repair structure in an embodiment of the present invention.

[0037] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0038] The components include: 1. Rock slope, 2. Repair structure, 3. Planting hole, 4. Fixing component, 5. Inner cylinder unit, 6. Outer cylinder unit, 7. Inner cylinder, 8. Outer cylinder, 9. Expansion bolt, 10. Pressure plate. Detailed Implementation

[0039] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0040] Example 1

[0041] In a typical embodiment of the present invention, reference is made to Figure 1 As shown, an ecological slope protection and restoration structure for steep slopes includes a restoration structure 2. The restoration structure 2 is an integrated structure composed of an inner cylinder unit 5 and an outer cylinder unit 6. The inner cylinder unit 5 and the outer cylinder unit 6 are arranged in a V-shape. Both the inner cylinder unit 5 and the outer cylinder unit 6 are composed of multiple cylinders. The cylinders of the inner cylinder unit 5 and the cylinders of the outer cylinder unit 6 correspond one-to-one, and are connected at one end close to each other and open at the other end far away from each other. The plane at the end of the inner cylinder unit 5 away from the outer cylinder unit 6 is a cement bonding surface. The restoration structure 2 is fixed to the rock slope 1 by a fastener 4.

[0042] The repair structure 2 in this embodiment can be anchored to the surface of the rock slope 1 to provide a more stable and durable growth environment for plants.

[0043] like Figures 1-3As shown, the outer cylinder unit 6 is connected to the end of the inner cylinder unit 5 away from the rock slope 1. The inner cylinder unit 5 is composed of multiple inner cylinders 7, and the outer cylinder unit 6 is composed of multiple outer cylinders 8.

[0044] The number of inner cylinders 7 and outer cylinders 8 is the same, and there is a one-to-one correspondence between the inner cylinders 7 and the outer cylinders 8. Each inner cylinder 7 and its corresponding outer cylinder 8 are connected at one end close to each other. After the inner cylinders 7 and outer cylinders 8 are connected, a V-shaped channel is formed inside, such as... Figure 3 As shown. It can be understood that the number of V-shaped channels is the same as the number of inner cylinders 7 and outer cylinders 8, and the multiple V-shaped channels are independent of each other.

[0045] like Figure 2 As shown, in this embodiment, the multiple cylinders on the inner cylinder unit 5 and the outer cylinder unit 6 are arranged in a honeycomb pattern, and the cross-sectional shape of the inner cylinder 7 and the outer cylinder 8 is a regular hexagon.

[0046] It is understandable that the opening at the end of the outer cylinder 8 away from the inner cylinder 7 is the planting hole 3, and the V-shaped channel is the nutrient soil filling space. Flowing nutrient soil can be filled into the nutrient soil filling space through the planting hole 3.

[0047] In addition, since the outer cylinder 8 and the corresponding inner cylinder 7 are interconnected and sealed at the joint, water can be stored in the V-shaped channel, which solves the problem that soil moisture is easily affected by vertical gravity, resulting in a large difference between the upper and lower moisture levels and thus uneven vegetation restoration.

[0048] like Figure 2 As shown, multiple inner cylinders 7 are parallel to each other, and multiple outer cylinders 8 are parallel to each other. Therefore, the axes of the multiple inner cylinders 7 are parallel to each other, and the axes of the multiple outer cylinders 8 are parallel to each other.

[0049] Figure 3 The state shown is Figure 1 The left side of the repair structure 2 is shown in the diagram. The thickness of the outer cylinder unit 6 is greater than the thickness of the inner cylinder unit 5, that is, the outward extension length b of the outer cylinder unit 6 is greater than the outward extension length a of the inner cylinder unit 5.

[0050] like Figure 2 As shown, the repair structure 2 is a modular structure with an approximately square outer surface, which facilitates the reasonable splicing of multiple repair structure 2s on the outer surface of the rock slope 1.

[0051] The repaired structural component 2 is a precast component made of high-density polyethylene (HDPE) and is formed by casting using a template.

[0052] like Figure 3As shown, in a preferred example, the angle between the axis of each outer cylinder 8 in the outer cylinder unit 6 and the horizontal plane is 45°, and the angle between the axes of the outer cylinder 8 and the inner cylinder 7 is 90°. Therefore, the angle between the axis of the inner cylinder 7 and the horizontal plane is 45°. Furthermore, b = 2a, meaning that the outward extension length of the outer cylinder unit 6 is twice the outward extension length of the inner cylinder unit 5.

[0053] like Figure 4 As shown, the side cross-section diagram of the rock slope 1 and the repair structure 2 is shown. The cross-section diagrams of the inner cylinder unit 5 and the outer cylinder unit 6 are both parallelograms. When prefabricating components, the component with the largest soil bearing capacity and water storage capacity is preferred. This can be equivalent to the two parallelograms with the largest cross-sections of the inner cylinder unit 5 and the outer cylinder unit 6.

[0054] The cross-section of the inner cylinder unit 5 forms a parallelogram ACEF, and the cross-section of the outer cylinder unit 6 forms a parallelogram CBDE. Let AC = k, CB = 2AC = 2k, and AF, CE, and BD be parallel to each other and all have a length of h.

[0055] Given ∠ACE=γ, ∠ECB=θ, ∠ACB=β, and β=γ+θ, find the value of β such that the sum of the areas of parallelograms ACEF and CBDE is maximized.

[0056]

[0057]

[0058]

[0059]

[0060] Because cosβ monotonically decreases within the range of 0-180°, the minimum value of cosβ is -1, i.e., when β is at 180°. At its maximum, the theoretical soil bearing capacity is at its maximum, but at this point, the water storage and soil bearing capacity is lost. When the angle exceeds 90°, the water storage effect of the structure will decrease as the angle increases. Therefore, combining sensitivity calculations and engineering experience, when β is 90°, γ is 26.57° and θ is 63.43°, which is the optimal solution that takes into account both water storage capacity and soil bearing capacity.

[0061] Therefore, in this embodiment, the included angle between the axes of the outer cylinder 8 and the inner cylinder 7 is preferably 90°, which is the optimal balance between soil bearing capacity and water and fertilizer retention effect.

[0062] The height h2 of the outer cylinder unit 6 and the height h1 of the inner cylinder unit 5 are the same. The inner cylinder unit 5 has a cement bonding surface for bonding to the rock slope 1. The internal channels of the outer cylinder 8 are inclined outwards, and the V-shaped channels can better retain water and soil.

[0063] The outward extension length b of the outer cylinder unit 6 is 100-200mm, the outward extension length a of the inner cylinder unit 5 is 50-100mm, and the height h2 of the outer side of the outer cylinder unit 6 and the height h1 of the inner side of the inner cylinder unit 5 are 500-1000mm.

[0064] When installing the repair structure 2, a cement bonding layer needs to be applied between the cement bonding surface of the inner cylinder unit 5 and the surface of the rock slope 1, and the fastener 4 is passed through the repair structure 2. The end of the fastener 4 is fixed inside the rock slope 1 to fix the repair structure 2.

[0065] The fastener 4 preferably consists of an expansion bolt 9 and a pressure plate 10. The expansion bolt 9 passes through the repair structure 2, and the nut of the expansion bolt 9 presses the pressure plate 10. The pressure plate 10 presses the repair structure 2 from the outer side of the repair structure 2.

[0066] The number of expansion bolts 9 and pressure plates 10 can be determined according to the specific needs to ensure that the repair structure 2 is installed firmly. The angle between the expansion bolts 9 and the repair structure 2 can be determined according to the specific needs, preferably with the two set perpendicularly.

[0067] This embodiment arranges the repair structure 2 on the slope surface of the rock slope 1 and fills the V-shaped channel with nutrient soil, which can significantly increase the soil bearing capacity of the slope surface, provide a more stable and lasting growth environment for plants, and thus achieve long-term ecological restoration of the steep rock slope 1 and even the vertical slope.

[0068] This embodiment not only overcomes the limitations of traditional restoration techniques in adapting to slope gradients, but also enhances the erosion resistance and durability of the restoration system through optimized structural design and material ratios, effectively preventing secondary geological disasters. Furthermore, the V-shaped channel arrangement effectively alleviates the problem of uneven vertical distribution of water and nutrients caused by gravity, ensuring uniform vegetation growth and long-term survival.

[0069] Example 2

[0070] A method for ecological slope protection and restoration structure of steep slopes, using the ecological slope protection and restoration structure of Example 1, includes the following steps:

[0071] S1: Precast and cure the repair structural component 2. Use a template to cast the repair structural component 2, and cure it after molding. The dimensions of the repair structural component 2 are determined according to requirements.

[0072] Furthermore, the outward extension length 'a' of the inner cylinder unit 5 is 100mm, the outward extension length 'b' of the outer cylinder unit 6 is 200mm, the height h2 of the outer side of the outer cylinder unit 6 and the height h1 of the inner side of the inner cylinder unit 5 are both 1000mm, the included angle between the outer cylinder unit 6 and the inner cylinder unit 5 is 90°, and the included angle with the ground is 45°. The molded repair structure 2 has honeycomb-shaped openings on both its outer and inner sides. The material of the repair structure 2 is high-density polyethylene (HDPE).

[0073] This embodiment is mainly for vertical rock slope 1, but it can also be applied to steep slopes. When applied to steep slopes, it is similar to that for vertical slopes, ensuring that the outer side of the repair structure 2 is parallel to the slope surface.

[0074] S2: Cleaning the surface of rock slope 1: Conduct a comprehensive cleaning operation on the surface (slope) of rock slope 1 in advance, strictly remove the gravel, loose rocks and other debris attached to the slope; chisel away and level the protruding rock masses, irregular hard blocks and other protruding parts of the slope; use appropriate materials to backfill and compact the larger depressions on the slope in layers to ensure that the overall slope is smooth and regular without obvious defects, and to meet the construction requirements of a flat and stable slope.

[0075] S3: After completing the slope cleaning work, the next step is to scan the surface of the rock slope 1 with a scanner and generate an overall image. The overall image is then divided into square modules. It can be understood that each square module corresponds to a repair structure 2. Therefore, the location and required quantity of the repair structure 2 can be determined based on the planned square modules. Then, holes are drilled at the four corners of the repair structure 2. The size of the drilled holes is adapted to the diameter of the expansion bolts 9.

[0076] Understandably, when drilling holes in the repair structure 2, the repair structure 2 can be pre-connected according to the planned layout, and then holes can be drilled at the four corners of the repair structure 2. Since the inner cylinder unit 5 and the outer cylinder unit 6 are arranged in a V-shape, some corner positions of the repair structure 2 require two holes to be drilled. One hole is used for the expansion bolt 9 to pass through the repair structure 2, and the other hole is used to be coaxial with the hole on the adjacent repair structure 2, so that they are both passed through by one expansion bolt 9.

[0077] In order to fix the expansion bolts 9, it is necessary to determine the approximate fixing position of the repair structure 2 in advance, and drill holes at the four corners of the corresponding repair structure 2 on the slope to facilitate the installation of the expansion bolts 9.

[0078] Multiple openings also need to be drilled at other corresponding locations on the surface of the rock slope 1. These openings can be filled with fluid nutrient soil to facilitate the spread of plant roots to this location and enable the plants to take root in the rock slope 1.

[0079] S4: Fixing the repair structure 2: Apply a cement bonding layer to the cement bonding surface inside the repair structure 2, and then attach it to the rock slope 1. Pass the expansion bolt 9 through the hole in the repair structure 2, with the front end of the expansion bolt 9 extending into the corresponding opening on the surface of the rock slope 1. The rear end of the expansion bolt 9 mates with the pressure plate 10, which has a corresponding round hole. The pressure plate 10 can be fitted onto the threaded rod of the expansion bolt 9 through the round hole. The pressure plate 10 and the expansion bolt 9 mate to fix the repair structure 2. Preferably, the threaded rod of the expansion bolt 9 is 600mm long.

[0080] like Figure 1 As shown, the pressure plate 10 can press one, two, or four repair structural components 2 at different locations. In some cases, the pressure plate 10 can press three repair structural components 2.

[0081] Understandably, when using expansion bolts 9 to fix and repair structural component 2, a fixing method perpendicular to the rock wall should be used when there is a lot of broken / weathered rock mass to avoid enlarging cracks with inclined holes; for hard and intact rock mass, a cantilever fixing at a 45° angle to the ground should be used (to counteract the downward sliding force generated by the component's own weight). The hole angle of the repair structural component 2 should be drilled according to this principle.

[0082] The length of the expansion bolt 9 can be determined based on the size of the repair structure 2 and the fixing angle. When the thickness of the repair structure 2 is ≥300mm, the expansion bolt 9 with a length ≥600mm is selected for 45° angle cantilever fixing, and the expansion bolt 9 with a length ≥500mm is selected for vertical rock wall fixing.

[0083] When the thickness of the repair structure 2 is less than 300mm and the thickness is less than 150mm, the length of the expansion bolt 9 for the 45° cantilever fixing at 600mm and 45° angles should be greater than 400mm; when the thickness of the expansion bolt 9 for the vertical rock wall is greater than 500mm, the length of the expansion bolt 9 should be greater than 300mm. The diameter of the expansion bolt 9 should be greater than or equal to M20.

[0084] During installation, there is a set gap between adjacent repair structural components 2, which is 2-5cm, preferably 2cm. The outer diameter of the pressure plate 10 is significantly larger than the outer diameter of the expansion bolt 9. Therefore, one pressure plate 10 can press multiple repair structural components 2 together.

[0085] S5: Fill with soil and plant plants. Fill the V-shaped channel (nutrient soil filling space) from bottom to top with a mixture of various materials of nutrient soil. The nutrient soil is fluid to ensure that it can fill the entire inner cylinder unit and also fill the eight main internal spaces of the outer cylinder.

[0086] There are two types of potting soil, A and B. Both types contain soil, water-retaining agent, organic matter, binder, fertilizer, solidifying agent, water, and fungi. The difference is that A does not contain plant seeds, while B does.

[0087] When filling the soil, first fill with nutrient soil A. Nutrient soil A is filled in the V-shaped channel. Nutrient soil A can also flow into the opening of the rock slope 1. When nutrient soil A is filled to about 50mm from the opening of the planting hole 3, fill with nutrient soil B containing plant seeds. The purpose is to ensure that after the plant seeds in nutrient soil B germinate, they can grow better towards the outside of the planting hole 3, and their roots can extend inward through nutrient soil A and take root on the slope.

[0088] S6: Maintenance: After completing all the above tasks, maintenance work will be carried out, including laying non-woven fabric, watering regularly, and checking the vegetation growth to ensure that the vegetation can grow smoothly in the new environment and achieve the expected ecological restoration effect. In addition, during the maintenance process, external factors should be prevented from damaging the components, thereby affecting the overall effect of ecological restoration.

[0089] This embodiment can solve the problems of difficulty in ecological restoration of steep rock slopes and even vertical rock slopes, and adapt to steep slopes. It can also reduce the problem of uneven distribution of water resources on vertical slopes and reduce the problem of poor ecological restoration effect caused by drought and nutrient deficiency. At the same time, the special material structure can maintain a certain amount of water and nutrients to supply the normal growth of plants while maintaining vertical ecological greening, thus providing a new construction solution for ecological restoration of vertical slopes.

[0090] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An ecological slope protection and restoration structure for steep slopes, characterized in that, The repair structure is an integrated structure composed of an inner cylinder unit and an outer cylinder unit. The inner and outer cylinder units are arranged in a V-shape and each is composed of multiple cylinders. The cylinders of the inner cylinder unit and the outer cylinder unit correspond one-to-one, and are connected at one end when they are close to each other and open at the other end when they are far away from each other. The plane at the end of the inner cylinder unit that is far away from the outer cylinder unit is a cement bonding surface. The repair structure is fixed to the rock slope by fasteners. The inner cylinder unit is composed of multiple inner cylinders, and the outer cylinder unit is composed of multiple outer cylinders; The number of inner and outer cylinders is the same, and the inner and outer cylinders correspond one-to-one. The ends of the inner and outer cylinders that are close to each other are connected. After the inner and outer cylinders are connected, a V-shaped channel is formed inside. The opening at the end of the outer cylinder away from the inner cylinder is a planting hole, and the V-shaped channel is a space for filling with nutrient soil.

2. The ecological slope protection and restoration structure for steep slopes according to claim 1, characterized in that, The inner cylinder unit and the outer cylinder unit both have multiple cylinders arranged in a honeycomb pattern.

3. The ecological slope protection and restoration structure for steep slopes according to claim 2, characterized in that, Both the inner cylinder and the outer cylinder have hexagonal cross-sectional shapes; The multiple inner cylinders are parallel to each other, and the multiple outer cylinders are parallel to each other.

4. The ecological slope protection and restoration structure for steep slopes according to claim 1, characterized in that, The thickness of the outer cylinder unit is greater than the thickness of the inner cylinder unit.

5. The ecological slope protection and restoration structure for steep slopes according to claim 4, characterized in that, The repair structure is a modular structure as a whole.

6. The ecological slope protection and restoration structure for steep slopes according to claim 1, characterized in that, The V-shaped channel is filled with nutrient soil.

7. The ecological slope protection and restoration structure for steep slopes according to claim 1, characterized in that, The repair structure is fixed to the rock slope using expansion bolts and pressure plates.

8. The ecological slope protection and restoration structure for steep slopes according to claim 1, characterized in that, The included angle between the inner cylinder unit and the outer cylinder unit is 90°.

9. An ecological slope protection and restoration method for steep slopes, characterized in that, The ecological slope protection and restoration structure as described in any one of claims 1-8 includes the following steps: S1: Prefabricated repair structural components; S2: Clean the surface of the rock slope, remove and level the protruding parts of the rock slope surface, and backfill and compact the larger depressions on the rock slope surface in layers to ensure that there are no obvious defects on the rock slope surface and achieve a flat rock slope surface. S3: Scan the surface of the rock slope with a scanner and generate an overall image. Divide the overall image into square modules. Determine the location and required quantity of the repair structure based on the planned square modules. Drill holes at the four corners of the repair structure, with the hole size matching the diameter of the expansion bolts. At the four corners of the corresponding repair structure on the rock slope surface, holes are drilled to facilitate the installation of expansion bolts; at the same time, holes are drilled at other corresponding locations on the rock slope surface to facilitate the roots of plants into the rock slope. S4: Fix the repair structure, apply a cement bonding layer to the cement bonding surface inside the repair structure, and then fix the repair structure with expansion bolts and pressure plates. The ends of the expansion bolts are fixed inside the rock slope. S5: Fill the soil by filling the V-shaped channel with fluid nutrient soil and partially filling the openings on the surface of the rock slope. Plant seeds in the nutrient soil are close to the planting holes, and then maintenance is carried out.

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