A recyclable soil-covered slope ecological restoration device and soil-covered slope ecological restoration device

Abstract

The present invention relates to the field of ecological restoration technology, and discloses a recyclable soil-covered slope ecological restoration device and soil-covered slope, comprising: a layered improved matrix layer, composed of a low-permeability matrix layer, a first improved matrix layer, a water-conducting matrix layer, and a second improved matrix layer arranged in sequence from bottom to top; a double-layer irrigation structure embedded in the layered improved matrix layer, a soil-fixing planting fiber bundle layer arranged above the second improved matrix layer and connected to an upper water storage structure, water is supplied to the layered improved matrix layer through the lower water storage structure, and water is supplied to the soil-fixing planting fiber bundle layer through the upper water storage structure. The present invention can reduce the amount of soil used, improve the vegetation matrix, optimize the vegetation growth environment, efficiently utilize and store natural rainfall, runoff, and artificial irrigation water, maintain soil moisture, reduce soil cover loss, improve slope stability, and promote vegetation rooting and development; the materials used in the device are environmentally degradable, the device is reusable, and costs are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of ecological restoration, in particular to a recyclable soil-covered slope ecological restoration device and a soil-covered slope. Background Art

[0002] When carrying out ecological restoration of slopes in arid and semi-arid areas, the slopes need to be reconstructed and re-soiled before planting and regreening. However, high-quality imported soil is expensive, has high transportation costs, and has low yields. The fertility of the soil obtained nearby is low, the nutrients are poor, and the water retention is poor. It is difficult to reach the amount of soil required for ecological restoration and cannot support seed germination and vegetation growth. At the same time, arid and semi-arid areas have a windy, dry, and rainy climate with a concentrated rainy season, which leads to strong soil evaporation, scarce water available for vegetation, and the risk of wind and water erosion, which further increases the difficulty of plant growth. In response to the above problems, two solutions are currently commonly used: one is to use ecological bags and ecological blankets for auxiliary restoration, and the other is to spray organic solvents.

[0003] Eco-bags are used to hold soil and plant seeds, reducing soil movement caused by external forces. Eco-mats, used to cover the surface of the soil, can reduce wind and water erosion. However, neither method can improve the fertility, water retention, and air permeability of the substrate used for vegetation growth, and their effectiveness is limited.

[0004] Spraying organic solvents can improve soil fertility and form a protective film on the surface of the topsoil layer, reducing soil loss. However, spraying organic solvents cannot solve the problem of insufficient vegetation cover due to a shortage of topsoil resources in arid and semi-arid ecological restoration areas. Moreover, the protective film formed can affect vertical water exchange and irrigation in arid and semi-arid areas.

[0005] In view of this, how to provide a soil-covered slope ecological restoration device is a problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0006] The purpose of the present invention is to provide a recyclable soil-covered slope ecological restoration device and a soil-covered slope to solve the problems existing in the prior art.

[0007] To achieve the above-mentioned purpose, the present invention provides a recyclable soil-covering slope ecological restoration device, comprising:

[0008] The layered improved matrix layer is composed of a low permeability matrix layer, a first improved matrix layer, a water conductive matrix layer, and a second improved matrix layer arranged in sequence from bottom to top, wherein the low permeability matrix layer is formed by compression of sawdust, the first improved matrix and the second improved matrix are composed of soil improved matrix, and the water conductive matrix layer is made of water conductive material;

[0009] a double-layer irrigation structure embedded in the first improved matrix layer, the water-conducting matrix layer, and the second improved matrix layer, the double-layer irrigation structure comprising an upper water storage structure and a lower water storage structure in communication with each other, the lower water storage structure being in communication with the first improved matrix layer, the water-conducting matrix layer, and the second improved matrix layer;

[0010] A soil-fixing planting fiber bundle layer, composed of degradable plant fibers, is disposed above the second improved matrix layer and is connected to the upper water storage structure, and green plant seeds are sown in the soil-fixing planting fiber bundle layer;

[0011] The double-layer irrigation structure is connected to the irrigation water, supplies water to the first improved matrix layer, the water-conducting matrix layer and the second improved matrix layer through the lower water storage structure, and supplies water to the soil-fixing planting fiber bundle layer through the upper water storage structure.

[0012] Furthermore, the layered improved matrix layer is wrapped with plant fiber cloth.

[0013] Furthermore, the first improved matrix layer, the water-conducting matrix layer and the second improved matrix layer are provided with a first through groove, a second through groove and a third through groove correspondingly through the upper and lower surfaces, the double-layer irrigation structure is installed in the first through groove, the second through groove and the third through groove, and a placement base plate is provided at the bottom of the double-layer irrigation structure, and the placement base plate is provided on the upper surface of the low-permeability matrix layer.

[0014] Furthermore, the lower water storage structure includes a lower water storage cavity and a lower irrigation pore zone connected to the lower water storage cavity, and the lower irrigation pore zone is connected to the first improved matrix layer, the water-conducting matrix layer and the second improved matrix layer respectively.

[0015] Furthermore, the upper water storage structure includes an upper water storage cavity and an upper irrigation pore belt connected to the upper water storage cavity, the upper irrigation pore belt is connected to the soil-fixing planting fiber bundle layer, the upper water storage cavity and the lower water storage cavity are connected through internal through holes and the volume of the lower water storage cavity is greater than the volume of the upper water storage cavity; the top surfaces of the upper water storage structure and the lower water storage structure are flush or close, the top surface of the upper water storage structure is provided with an upper irrigation hole connected to the upper water storage cavity, and the top surface of the lower water storage structure is provided with a lower irrigation hole connected to the lower water storage cavity.

[0016] Furthermore, the upper water storage structure extends outward to form a first bayonet and a second bayonet respectively, and the soil-fixing planting fiber bundle layer includes a first fiber bundle layer and a second fiber bundle layer arranged at intervals up and down, and the first fiber bundle layer and the second fiber bundle layer are respectively clamped in the first bayonet and the second bayonet, and the green plant seeds are sown between the first fiber bundle layer and the second fiber bundle layer; one end of the upper irrigation pore belt is connected to the upper water storage cavity, and the other end passes through the upper water storage structure and extends between the first bayonet and the second bayonet, and the first fiber bundle layer and the second fiber bundle layer are both connected to the other end of the upper irrigation pore belt.

[0017] Furthermore, the first fiber bundle layer and the second fiber bundle layer are respectively connected to the first and second bayonet holes through the first and second transverse linking strips, and there is no transverse structure in the middle of the first fiber bundle layer and the second fiber bundle layer.

[0018] Furthermore, the placement base plate includes: an integrally arranged vertical water-conducting structure placement plate and a water storage structure placement plate, the double-layer irrigation structure is arranged on the water storage structure placement plate, and the vertical water-conducting structure is arranged on the vertical water-conducting structure placement plate, the vertical water-conducting structure is made of a degradable or reusable porous water-conducting material, and is installed in the first through groove, the second through groove and the third through groove, the vertical water-conducting structure placement plate and the water storage structure placement plate define a longitudinal runoff channel, and the longitudinal runoff channel is connected to the first improved substrate layer; the vertical water-conducting structure placement plate is provided with a vertical through hole along the longitudinal direction, the upper end of the vertical through hole is connected to the vertical water-conducting structure, and the lower end is connected to the longitudinal runoff channel, and the top of the vertical water-conducting structure is connected to the irrigation water.

[0019] Furthermore, it also includes:

[0020] The dust-proof green net is provided with through holes corresponding to the double-layer irrigation structure and the vertical water guide structure, and the dust-proof green net is covered on the soil-fixing planting fiber bundle layer.

[0021] The present invention also provides a soil-covered slope surface, which uses a recyclable soil-covered slope surface ecological restoration device. Multiple groups of recyclable soil-covered slope surface ecological restoration devices are arranged in sequence along the bedrock layer. The vertical water-conducting structure is connected to the first improved matrix layer, the water-conducting matrix layer and the second improved matrix layer in another group of recyclable soil-covered slope surface ecological restoration devices. Natural soil is filled between the soil-fixing planting fiber bundle layer and the second improved matrix layer to form a soil layer.

[0022] The present invention discloses the following technical effects:

[0023] 1. Reduce the amount of covering soil used, improve the planting matrix, and optimize the vegetation growth environment.

[0024] By using a layered modified substrate, the amount of soil required for ecological restoration slopes is reduced, significantly reducing the cost of soil covering. The first and second modified substrate layers are composed of soil amendments, which can provide a high-fertility and strong water-retention substrate environment for vegetation growth, which is beneficial to the root development of plant species.

[0025] 2. Efficiently utilize and store natural rainfall, runoff and artificial irrigation water to maintain soil moisture.

[0026] Irrigation water from rainfall and artificial irrigation can be directed directly from the ground into the underground through vertical water-conducting structures, vertical holes in the vertical water-conducting structure mounting plates, and longitudinal runoff channels, and stored in the layered improved matrix layer. The porous properties of the vertical water-conducting structures ensure smooth water infiltration, while retaining other impurities on the ground to prevent channel blockage. The low-permeability matrix layer in the layered improved matrix layer is mainly formed by compressed sawdust and has the characteristics of high density and low permeability. It can reduce the infiltration of water into the bedrock layer and increase the water available to plants. The first and second improved matrix layers are composed of soil amendments, ensuring space for water storage. The water-conducting matrix layer has excellent water conductivity, ensuring efficient water transfer between the layered improved matrix layers.

[0027] During dry seasons when vegetation requires water, irrigation water can flow through the upper and lower irrigation holes into the lower and upper water storage cavities of the double-layer irrigation structure, creating dual irrigation for both above and below ground. The lower water storage cavity is connected to the first, water-conducting, and second improved substrate layers via the lower irrigation pore band. The larger volume of the lower water storage cavity allows most irrigation water to flow directly into the underground layered improved substrate layers for storage, minimizing evaporation and water loss while also allowing upward wetting of the soil. The upper water storage cavity is connected to the first and second slots of the soil-stabilizing planting fiber bundle layer through the upper irrigation pore band. The first and second fiber bundles of the soil-stabilizing planting fiber bundle layer are connected to the first and second slots of the double-layer irrigation structure, respectively. Seeds are sown between the first and second fiber bundle layers. The smaller volume of the upper water storage cavity ensures that vegetation meets its surface water requirements (e.g., during seed germination). The soil-fixing planting fiber bundle layer is composed of biodegradable plant fibers that adhere to seeds, preventing them from running off the slope. It also possesses specific water absorption, retention, and water conduction properties. The lack of lateral connections in the middle of the fiber bundles facilitates the upward growth of vegetation. Internal through-holes connect the lower and upper water storage cavities, balancing air pressure and moisture levels within the structure.

[0028] 3. Reduce soil cover loss, improve slope stability, and promote vegetation rooting and development.

[0029] The soil-fixing planting fiber bundle layer reduces the loss of topsoil due to hydraulic erosion caused by natural rainfall, runoff, and traditional water irrigation through its covering effect, while also reducing the wind erosion effects of alternating droughts and strong winds on the topsoil. The covering effect of the soil-fixing planting fiber bundle layer allows a large amount of topsoil to remain on the slope, providing a stable environment for plant germination and growth. The low-permeability matrix layer of the layered improved matrix layer reduces the infiltration of water into the bedrock layer from natural water circulation and irrigation. The bedrock of reconstructed slopes in areas with severe ecological damage is loosely accumulated, and under the influence of large amounts of water, the slope stability is likely to be destroyed, resulting in disasters such as landslides. The presence of the low-permeability matrix layer of the layered improved matrix layer reduces this risk and provides a matrix environment for the rooting and development of vegetation and further consolidation.

[0030] 4. The materials used are environmentally degradable and the devices used are reusable, which reduces costs.

[0031] The materials used for the layered improved matrix, soil-stabilizing fiber bundles, and dust-proof green net are all environmentally friendly and biodegradable, primarily plant-based fibers, to facilitate ecological recycling. The vertical water diversion structure and double-layer irrigation structure are made of non-polluting, environmentally friendly materials and can be reused multiple times, allowing for recycling and reuse within ecological restoration projects within the same area, reducing costs. Furthermore, the dust-proof green net suppresses dust during the initial stages of ecological restoration work, reducing pollution and enhancing aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 This is an exploded schematic diagram of the structure of the present invention;

[0034] Figure 2 Schematic diagram of the installation of the layered improved substrate layer, double-layer irrigation structure, vertical water guide structure and soil-fixing planting fiber bundle layer;

[0035] Figure 3 It is a cross-sectional view of the structure of the present invention;

[0036] Figure 4 Schematic diagram of the layered improved matrix structure;

[0037] Figure 5 It is a three-view drawing of a double-layer irrigation structure;

[0038] Figure 6 This is the layout diagram of the covering slope;

[0039] Figure 7 It is a water migration diagram;

[0040] Among them, 1. Layered improved matrix layer; 11. Low permeability matrix layer; 12. First improved matrix layer; 121. First through groove; 13. Water-conducting matrix layer; 131. Second through groove; 14. Second improved matrix layer; 141. Third through groove; 15. Plant fiber cloth; 2. Double-layer irrigation structure; 21. Placement bottom plate; 211. Vertical water-conducting structure placement plate; 2111. Vertical through hole; 212. Water storage structure placement plate; 213. Longitudinal runoff channel; 22. Lower water storage structure; 221. Lower water storage cavity; 222. Lower Layer irrigation pore belt; 223, lower irrigation hole; 23, upper water storage structure; 231, upper water storage cavity; 232, upper irrigation pore belt; 233, first bayonet; 234, second bayonet; 235, serrated structure; 236, upper irrigation hole; 24, horizontal edge; 25, internal through hole; 3, vertical water guide structure; 4, soil-fixing planting fiber bundle layer; 41, first fiber bundle layer; 411, first horizontal link; 42, second fiber bundle layer; 421, second horizontal link; 5, dust-proof green net; 51, through hole. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Example 1

[0044] An embodiment of the present invention provides a recyclable soil-covered slope ecological restoration device, comprising: a layered improved matrix layer 1, which is composed of a low-permeability matrix layer 11, a first improved matrix layer 12, a water-conducting matrix layer 13, and a second improved matrix layer 14 arranged in order from bottom to top, wherein the low-permeability matrix layer 11 is compressed and formed from sawdust, the first improved matrix and the second improved matrix are composed of soil-improved matrices, and the water-conducting matrix layer 13 is made of a water-conducting material;

[0045] The double-layer irrigation structure 2 is embedded in the first improved matrix layer 12, the water-conducting matrix layer 13, and the second improved matrix layer 14. The double-layer irrigation structure 2 has an upper water storage structure 23 and a lower water storage structure 22 that are connected. The lower water storage structure 22 is connected to the first improved matrix layer 12, the water-conducting matrix layer 13, and the second improved matrix layer 14.

[0046] The soil-fixing planting fiber bundle layer 4 is composed of degradable plant fibers (such as jute, etc.), which is arranged above the second improved matrix layer 14 and communicates with the upper water storage structure 23. Green plant seeds are sown in the soil-fixing planting fiber bundle layer 4;

[0047] The double-layer irrigation structure 2 is connected to the irrigation water, and supplies water to the first improved matrix layer 12, the water-conducting matrix layer 13 and the second improved matrix layer 14 through the lower water storage structure 22, and supplies water to the soil-fixing planting fiber bundle layer 4 through the upper water storage structure 23.

[0048] In this embodiment, the layered modified matrix layer 1 is wrapped with a plant fiber cloth 15 (a thin cloth layer). The low-permeability matrix layer 11 is primarily formed from compressed sawdust, exhibiting high density and low permeability. The first and second modified matrix layers 12 and 14 are composed of water-retaining sponge supplemented with soil amendments such as organic fertilizer and microorganisms. The water-conducting matrix layer 13 is composed of a mixture of plant fiber materials such as coconut shreds and straw, exhibiting excellent water conductivity.

[0049] In this embodiment, the first improved matrix layer 12, the water-conducting matrix layer 13, and the second improved matrix layer 14 are respectively provided with a first through groove 121, a second through groove 131, and a third through groove 141 through the upper and lower surfaces. The double-layer irrigation structure 2 is installed in the first through groove 121, the second through groove 131, and the third through groove 141. A placement base plate 21 is provided at the bottom of the double-layer irrigation structure 2. The placement base plate 21 has the same cross-sectional shape as the first through groove 121, the second through groove 131, and the third through groove 141. The placement base plate 21 is provided on the upper surface of the low-permeability matrix layer 11.

[0050] In this embodiment, the lower water storage structure 22 includes a lower water storage cavity 221 and a lower irrigation pore zone 222 connected to the lower water storage cavity 221. The lower irrigation pore zone 222 is connected to the first improved matrix layer 12, the water-conducting matrix layer 13 and the second improved matrix layer 14 respectively.

[0051] In this embodiment, the upper water storage structure 23 includes an upper water storage cavity 231 and an upper irrigation pore belt 232 connected to the upper water storage cavity 231, the upper irrigation pore belt 232 is connected to the soil-fixing planting fiber bundle layer 4, the upper water storage cavity 231 and the lower water storage cavity 221 are connected through the internal through hole 25 and the volume of the lower water storage cavity 221 is greater than the volume of the upper water storage cavity 231; the top surfaces of the upper water storage structure 23 and the lower water storage structure 22 are flush or close, and an upper irrigation hole 236 connected to the upper water storage cavity 231 is provided on the top surface of the upper water storage structure 23, and a lower irrigation hole 223 connected to the lower water storage cavity 221 is provided on the top surface of the lower water storage structure 22.

[0052] In this embodiment, a horizontal edge 24 is provided on the outer side of the lower water storage structure 22 corresponding to the second improved substrate layer 14 .

[0053] In this embodiment, the upper water storage structure 23 extends outward to form a first bayonet 233 and a second bayonet 234 respectively. The soil-fixing planting fiber bundle layer 4 includes a first fiber bundle layer 41 and a second fiber bundle layer 42 arranged at intervals in the upper and lower directions. The first fiber bundle layer 41 and the second fiber bundle layer 42 are respectively clamped in the first bayonet 233 and the second bayonet 234. The first bayonet 233 and the second bayonet 234 are both provided with a serrated structure 235 to improve the connection stability; green plant seeds are sown between the first fiber bundle layer 41 and the second fiber bundle layer 42; one end of the upper irrigation pore belt 232 is connected to the upper water storage cavity 231, and the other end passes through the upper water storage structure 23 and extends between the first bayonet 233 and the second bayonet 234. The first fiber bundle layer 41 and the second fiber bundle layer 42 are both connected to the other end of the upper irrigation pore belt 232.

[0054] In this embodiment, the first fiber bundle layer 41 and the second fiber bundle layer 42 are respectively connected to the first and second bayonet holes 233 and 234 through the first and second transverse link strips 411 and 421, and there is no transverse structure in the middle part of the first and second fiber bundle layers 41 and 42.

[0055] In this embodiment, the placement base plate 21 includes: an integrally arranged vertical water-conducting structure placement plate 211 and a water storage structure placement plate 212; the double-layer irrigation structure 2 is arranged on the water storage structure placement plate 212; a vertical water-conducting structure 3 is arranged on the vertical water-conducting structure placement plate 211; the vertical water-conducting structure 3 is made of a degradable or reusable porous water-conducting material (such as sponge, permeable lightweight bricks), and is installed in the first through groove 121, the second through groove 131 and the third through groove 141. It should be noted that the vertical water-conducting structure 3 is arranged adjacent to the double-layer irrigation structure 2, and the combination of the two is adapted to the cross-sectional shape of the first through groove 121, the second through groove 131 and the third through groove 141. A longitudinal runoff channel 213 is defined in the vertical water guide structure placement plate 211 and the water storage structure placement plate 212, and the longitudinal runoff channel 213 is connected to the first improved matrix layer 12; a vertical through hole 2111 is opened in the vertical direction of the vertical water guide structure placement plate 2111, the upper end of the vertical through hole 2111 is connected to the vertical water guide structure 3, and the lower end is connected to the longitudinal runoff channel 213, and the top of the vertical water guide structure 3 is connected to the irrigation water.

[0056] In this embodiment, it also includes:

[0057] The dust-proof green net 5 is a green degradable mesh structure with through holes 51 corresponding to the double-layer irrigation structure 2 and the vertical water guide structure 3. The dust-proof green net 5 is covered on the soil-fixing planting fiber bundle layer 4.

[0058] Example 2

[0059] An embodiment of the present invention provides a soil-covered slope surface, using the recyclable soil-covered slope surface ecological restoration device of Example 1. Multiple groups of recyclable soil-covered slope surface ecological restoration devices are arranged in sequence along the bedrock layer, and a vertical water-conducting structure 3 is connected to the first improved matrix layer 12, water-conducting matrix layer 13, and second improved matrix layer 14 in another group of recyclable soil-covered slope surface ecological restoration devices. This allows water exchange between adjacent recyclable soil-covered slope surface ecological restoration devices through the vertical water-conducting structure 3, maintaining the overall moisture balance of the soil-covered slope surface and further improving water retention performance. Natural soil is filled between the soil-fixing planting fiber bundle layer 4 and the second improved matrix layer 14 to form a soil layer.

[0060] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0061] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A recyclable soil covering slope ecological restoration device, characterized in that: include: A layered improved matrix layer (1) is composed of a low permeability matrix layer (11), a first improved matrix layer (12), a water-conducting matrix layer (13), and a second improved matrix layer (14) arranged in sequence from bottom to top, wherein the low permeability matrix layer (11) is formed by compression of sawdust, the first improved matrix and the second improved matrix are composed of soil improved matrix, and the water-conducting matrix layer (13) is made of a water-conducting material; A double-layer irrigation structure (2) is embedded in the first improved matrix layer (12), the water-conducting matrix layer (13), and the second improved matrix layer (14); the double-layer irrigation structure (2) has an upper water storage structure (23) and a lower water storage structure (22) that are connected; the lower water storage structure (22) is connected to the first improved matrix layer (12), the water-conducting matrix layer (13), and the second improved matrix layer (14); A soil-fixing planting fiber bundle layer (4), composed of degradable plant fibers, is disposed above the second improved matrix layer (14) and is in communication with the upper water storage structure (23); green plant seeds are sown in the soil-fixing planting fiber bundle layer (4); The double-layer irrigation structure (2) is connected to the irrigation water, and supplies water to the first improved matrix layer (12), the water-conducting matrix layer (13), and the second improved matrix layer (14) through the lower water storage structure (22), and supplies water to the soil-fixing planting fiber bundle layer (4) through the upper water storage structure (23); The lower water storage structure (22) comprises a lower water storage cavity (221) and a lower irrigation pore zone (222) in communication with the lower water storage cavity (221), wherein the lower irrigation pore zone (222) is in communication with the first improved substrate layer (12), the water-conducting substrate layer (13), and the second improved substrate layer (14), respectively; The upper water storage structure (23) comprises an upper water storage cavity (231) and an upper irrigation pore belt (232) in communication with the upper water storage cavity (231); the upper irrigation pore belt (232) is in communication with the soil-fixing planting fiber bundle layer (4); the upper water storage cavity (231) and the lower water storage cavity (221) are in communication via an internal through hole (25); and the volume of the lower water storage cavity (221) is greater than the volume of the upper water storage cavity (231); the top surfaces of the upper water storage structure (23) and the lower water storage structure (22) are flush or close to each other; an upper irrigation hole (236) in communication with the upper water storage cavity (231) is provided on the top surface of the upper water storage structure (23); and a lower irrigation hole (223) in communication with the lower water storage cavity (221) is provided on the top surface of the lower water storage structure (22); The upper water storage structure (23) extends outward to form a first bayonet (233) and a second bayonet (234), respectively. The soil-fixing planting fiber bundle layer (4) comprises a first fiber bundle layer (41) and a second fiber bundle layer (42) spaced apart from each other. The first fiber bundle layer (41) and the second fiber bundle layer (42) are respectively engaged in the first bayonet (233) and the second bayonet (234), and the green plant seeds are sown between the first fiber bundle layer (41) and the second fiber bundle layer (42). One end of the upper irrigation pore belt (232) is connected to the upper water storage cavity (231), and the other end passes through the upper water storage structure (23) and extends between the first bayonet (233) and the second bayonet (234), and the first fiber bundle layer (41) and the second fiber bundle layer (42) are both connected to the other end of the upper irrigation pore belt (232).

2. A recyclable soil covering slope ecological restoration device according to claim 1, characterized in that: The layered improved matrix layer (1) is externally wrapped with a plant fiber cloth (15).

3. The recyclable soil covering slope ecological restoration device according to claim 1 is characterized in that: The first improved matrix layer (12), the water-conducting matrix layer (13), and the second improved matrix layer (14) are provided with a first through groove (121), a second through groove (131), and a third through groove (141) respectively through the upper and lower surfaces; the double-layer irrigation structure (2) is installed in the first through groove (121), the second through groove (131), and the third through groove (141); a placement base plate (21) is provided at the bottom of the double-layer irrigation structure (2); and the placement base plate (21) is provided on the upper surface of the low-permeability matrix layer (11).

4. The recyclable soil-covered slope ecological restoration device according to claim 3 is characterized in that: The first fiber bundle layer (41) and the second fiber bundle layer (42) are respectively connected to the first bayonet (233) and the second bayonet (234) via the first transverse linking strip (411) and the second transverse linking strip (421), and the middle parts of the first fiber bundle layer (41) and the second fiber bundle layer (42) have no transverse structure.

5. A recyclable soil covering slope ecological restoration device according to any one of claims 3-4, characterized in that: The placement base plate (21) comprises: an integrally arranged vertical water guide structure placement plate (211) and a water storage structure placement plate (212); the double-layer irrigation structure (2) is arranged on the water storage structure placement plate (212); a vertical water guide structure (3) is arranged on the vertical water guide structure placement plate (211); the vertical water guide structure (3) is made of a degradable or reusable porous water guide material and is installed in the first through groove (121), the second through groove (131), and the third through groove (141); A longitudinal runoff channel (213) is defined within the vertical water guide structure placement plate (211) and the water storage structure placement plate (212), and the longitudinal runoff channel (213) is communicated with the first improved substrate layer (12); the vertical water guide structure placement plate (211) is provided with a vertical through hole (2111) along the longitudinal direction, the upper end of the vertical through hole (2111) is communicated with the vertical water guide structure (3), and the lower end is communicated with the longitudinal runoff channel (213), and the top of the vertical water guide structure (3) is communicated with irrigation water.

6. The recyclable soil-covered slope ecological restoration device according to claim 5 is characterized in that: Also includes: The dustproof green net (5) is provided with through holes (51) corresponding to the double-layer irrigation structure (2) and the vertical water guide structure (3), and the dustproof green net (5) is covered on the soil-fixing planting fiber bundle layer (4).

7. A soil-covered slope, characterized in that: The recyclable soil-covering slope ecological restoration device according to claim 5 is applied, and multiple groups of recyclable soil-covering slope ecological restoration devices are arranged in sequence along the bedrock layer. The vertical water-conducting structure (3) is connected with the first improved matrix layer (12), the water-conducting matrix layer (13) and the second improved matrix layer (14) in another group of recyclable soil-covering slope ecological restoration devices, and natural soil is filled between the soil-fixing planting fiber bundle layer (4) and the second improved matrix layer (14) to form a soil layer.

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