Construction method of vegetation concrete ecological slope protection

Abstract

This application provides a method for constructing a vegetated concrete ecological slope protection system, including: cleaning the slope surface; filling the depressions on the slope surface with leveling material to form a working base surface; hanging wire mesh on the working base surface and fixing the wire mesh at a predetermined distance from the working base surface using anchors; preparing a base substrate and a surface substrate; the base substrate is composed of sandy loam soil, cement, organic materials, habitat substrate conditioner, and organic fertilizer mixed in a first preset ratio, and the surface substrate is composed of sandy loam soil, cement, organic materials, habitat substrate conditioner, organic fertilizer, and plant seeds mixed in a second preset ratio, wherein the cement content of the surface substrate is less than that of the base substrate; spraying the base substrate onto the working base surface to form a base layer; spraying water onto the base layer; spraying the surface substrate onto the base layer to form a surface layer; and covering the surface layer with non-woven fabric and curing it. The vegetated concrete ecological slope protection construction method provided by this application improves the effective seed germination rate and the interlayer bonding strength between the base layer and the surface layer.

Description

Technical Field

[0001] This application belongs to the field of ecological slope protection technology, specifically relating to a construction method for vegetation concrete ecological slope protection. Background Technology

[0002] Vegetated concrete ecological slope protection technology involves mixing cement, soil, organic materials, and plant seeds and then spraying the mixture onto the slope surface to form a slope protection layer that combines structural protection and vegetation restoration. It is widely used in slope treatment for highways, railways, water conservancy, mining and other projects.

[0003] In existing technologies, common methods for vegetation concrete slope protection include one-time spraying and layered spraying. One-time spraying involves mixing all components and spraying them all at once, but the strong alkalinity of cement and the heat of hydration can easily burn seeds, resulting in low germination rates. To address this problem, layered spraying was proposed, where a seed-free base layer is sprayed first, and after the base layer has initially set, a seed-containing surface layer is sprayed, aiming to isolate the seeds from the highly alkaline cement environment.

[0004] The inventors discovered that although the above-mentioned layered spraying method isolates the seeds from the base cement, it still has the following problems: On the one hand, the heat of hydration and alkaline substances of the base cement will migrate to the surface layer with the water, resulting in an increase in local pH value and temperature in the surface layer. The seed germination environment is not fundamentally improved, resulting in a limited increase in seed germination rate. On the other hand, before the surface layer is sprayed, the base surface is usually dry and the temperature is high. After the surface layer substrate is sprayed, the water is easily absorbed by the base layer, resulting in a decrease in interlayer adhesion. Moreover, the initial humidity required for seed germination is difficult to maintain, further inhibiting seed germination. Summary of the Invention

[0005] This application provides a method for constructing a vegetation concrete ecological slope protection, which aims to solve the problems in the existing layered spraying method where the migration of cement material in the base layer affects the germination of seeds in the surface layer, and the drying of the base layer leads to water loss and poor bonding between layers, so as to improve the seed germination rate and the interlayer bonding strength between the base layer and the surface layer.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: A method for constructing a vegetation-concrete ecological slope protection system is provided, including the following steps: S1. Clear loose rocks and debris from the slope; S2. Fill the depressions on the slope with leveling material to form a continuous and flat working base surface; S3. Hang wire mesh on the working base surface and fix the wire mesh at a predetermined distance from the working base surface using anchor nails; S4. Prepare the base substrate and the top substrate, and mix them evenly separately; The base layer substrate is composed of sandy loam soil, cement, organic materials, habitat substrate conditioner, and organic fertilizer mixed in a first preset ratio; the surface layer substrate is composed of sandy loam soil, cement, organic materials, habitat substrate conditioner, organic fertilizer, and plant seeds mixed in a second preset ratio; wherein, the proportion of cement in the surface layer substrate is less than the proportion of cement in the base layer substrate; S5. Spray the base material onto the working surface to form a base layer that wraps around the wire mesh; S6. Spray water onto the base surface to moisten it; S7. Spray the surface substrate onto the surface of the base layer to form a surface layer covering the base layer, wherein the thickness of the surface layer is less than the thickness of the base layer; S8. Cover the surface layer with non-woven fabric and perform maintenance management.

[0007] In one possible implementation, in S2, the leveling material is a planting bag filled with nutrient soil.

[0008] In one possible implementation, after S3 and before S5, planting rods are laid between the wire mesh and the working base, such that the axial direction of the planting rods is parallel to the working base, and the planting rods simultaneously abut against the working base and the wire mesh. The filling material in the planted stick is composed of sandy loam soil, cement, organic materials, habitat substrate improver and organic fertilizer mixed in the first preset ratio.

[0009] In one possible implementation, in S3, the wire mesh is arranged in multiple sets, with the multiple sets of wire mesh spaced apart from top to bottom along a direction parallel to the working base surface, and the spacing between two adjacent sets of wire mesh is greater than or equal to the outer diameter of the planting stick. The step of placing vegetation sticks between the wire mesh and the working base includes: The planting stick is placed into the working base through the gap between two adjacent sets of wire mesh, and pushed upward or downward to the inside of the wire mesh.

[0010] In one possible implementation, before the base layer finally sets in S5, the surface of the base layer is textured to form an uneven structure. In this structure, the inward direction of each depression is towards the space between two adjacent sets of wire mesh.

[0011] In one possible implementation, texturing the base surface includes: The roller is moved to the top of the base layer and abuts against the surface of the base layer; wherein the roller has a plurality of protruding ridges spaced apart circumferentially; The roller is driven to roll from top to bottom, so that the multiple protrusions abut against the base surface in succession, and each of the protrusions can form a concave structure when it abuts against the base surface.

[0012] In one possible implementation, a sensor array is deployed on the working substrate before the base material is sprayed onto the working substrate. The sensor group includes at least one of a pH sensor, a temperature sensor, and a humidity sensor; After S5 and before S6, the sensor group collects data on the base surface to determine whether the base surface meets the preset conditions. If the preset conditions are met, S6 is started. The preset conditions include at least one of the following: pH value of the base surface ≤ 7.5, temperature ≤ 35℃, and moisture content ≥ 30%.

[0013] In one possible implementation, in S4, the base substrate is further incorporated with self-healing alkali-reducing capsules; The self-healing alkali-reducing capsule includes a biodegradable outer shell and an acidic substance or alkali-resistant microorganisms encapsulated inside the outer shell; During a preset time period after the base substrate has cured, the outer shell degrades, and the acidic substances or alkali-resistant microorganisms are continuously released to neutralize the alkaline environment inside the base substrate.

[0014] In one possible implementation, the predetermined distance between the wire mesh and the working base is 7-8 cm; the thickness of the base layer is 8-9 cm; and the thickness of the surface layer is 2-3 cm.

[0015] In one possible implementation, the spraying interval between the base substrate and the top substrate is 3-4 hours; Specifically, for slopes with a slope ratio ≤ 1:0.75, a spraying process combining wet and dry spraying is adopted; for slopes with a slope ratio > 1:0.75, a dry spraying process is adopted.

[0016] In this embodiment, by cleaning loose rocks and debris from the slope and filling depressions with leveling material, a continuous and flat working surface is formed, providing a uniform foundation for subsequent construction. By hanging wire mesh on the working surface and fixing it with anchors at a predetermined distance from the surface, the wire mesh can be completely wrapped by a predetermined amount of base material, enhancing the overall structural strength of the slope protection layer. During the preparation of the base material and surface material, the base material and surface material are prepared separately with different cement ratios, with the surface material having a lower cement ratio than the base material. This significantly reduces the heat of hydration and alkaline substances in the surface layer, thereby minimizing chemical and thermal damage to the seeds at the material level while ensuring the overall strength meets requirements.

[0017] Based on the above, the base material is first sprayed onto the working surface to form a base layer wrapped with wire mesh. Then, water is sprayed onto the base surface to moisten it. Subsequently, the top layer material is sprayed onto the base surface to form a thinner top layer. Finally, non-woven fabric is covered for curing. In this sequential operation, the water spraying step lowers the surface temperature of the base layer and increases its moisture saturation, avoiding the problem of the dry base layer quickly absorbing the moisture after the top layer is sprayed.

[0018] The core of the above construction method lies in the synergy of a low cement ratio in the surface layer and pre-wetting of the base layer with water spraying to construct a composite slope protection structure that is conducive to seed germination and has a strong interlayer bond. On the one hand, the reduced cement content in the surface layer directly reduces the release of hydration heat and the generation of alkaline substances. Even if a small amount of alkaline substances migrate with the water, their concentration remains within a safe range due to the small total amount of cement, fundamentally improving the chemical and thermal environment for seed germination. On the other hand, the base layer surface forms a moist interface after water spraying. When the surface layer substrate is sprayed, the water is not easily absorbed by the base layer quickly. This ensures that the surface layer itself has the moisture content to maintain the initial humidity required for seed germination, and also allows for a more complete cement hydration reaction between the two layers, thereby improving the bond strength between the base layer and the surface layer.

[0019] The vegetation concrete ecological slope protection construction method provided in this embodiment, compared with the prior art, can systematically solve the core problems in the traditional layered spraying method, such as the limited improvement of seed germination rate due to the heat of cement hydration and the migration of alkaline substances in the base layer, and the rapid absorption of surface moisture and the decrease of interlayer bonding due to the dryness of the base layer. This method combines the process of low cement content in the surface layer with water spraying pre-wetting of the base layer. As a result, it can improve the effective seed germination rate while enhancing the interlayer bonding strength, thus ensuring the ecological restoration effect and structural stability of the slope protection. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram illustrating the steps of the vegetation concrete ecological slope protection construction method provided in the embodiments of this application; Figure 2 This is a schematic diagram of the three-dimensional structure of a slope in the prior art; Figure 3 This is a three-dimensional structural diagram of the slope and leveling materials used in the embodiments of this application in a combined state; Figure 4 This is a three-dimensional structural diagram of the slope, leveling material, and wire mesh used in the embodiments of this application in a combined state; Figure 5 for Figure 4 Side view; Figure 6 This is a three-dimensional structural diagram of the slope, leveling material, wire mesh and vegetation sticks used in the embodiments of this application in a combined state; Figure 7 for Figure 6 Side view; Figure 8 This is a three-dimensional structural diagram of the slope and base layer in a combined state, as used in the embodiments of this application. Figure 9 This is a cross-sectional structural diagram of the slope and base layer in a combined state used in the embodiments of this application; Figure 10 for Figure 9 A magnified view of a portion of the middle circle A; Figure 11 This is a three-dimensional structural diagram of the slope, base layer, and surface layer used in the embodiments of this application in a combined state; Explanation of reference numerals in the attached diagram: 1. Leveling material; 2. Wire mesh; 3. Anchor nail; 4. Vegetation stick; 10. Base layer; 101. Concave structure; 20. Surface layer; 100. Slope; 1001. Depression. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] Please see Figure 1 The following describes the construction method for vegetation concrete ecological slope protection provided in this application. The construction method for vegetation concrete ecological slope protection proposed in this application includes the following steps: S1. Clean up 100% of the dangerous rocks and debris on the slope.

[0027] Specifically: Before construction, the slope micro-topography is shaped, and then dangerous rocks and debris are removed from top to bottom to facilitate construction safety, plant growth and maintenance.

[0028] S2. Fill the depression 1001 on the slope 100 with leveling material 1 to form a continuous and flat working base surface.

[0029] Among them, such as Figure 2 As shown, depression 1001 refers to the structural defect (not shown in the figure) caused by the damage to slope 100, and the concave notch caused by the installation of the lattice beam. Furthermore, as... Figure 3 As shown, after leveling material 1 fills depression 1001, the outer surface of leveling material 1 is aligned with slope 100; in the case of lattice beams, the outer surface of leveling material 1 is aligned with the beam body of lattice beams, and finally a working base surface is formed.

[0030] S3. Hang wire mesh 2 on the working surface, and as follows: Figure 4 and Figure 5As shown, the wire mesh 2 is fixed to the working base or slope 100 by means of anchor nails 3, thereby keeping the distance between the wire mesh 2 and the working base at a predetermined distance.

[0031] S4. Prepare the base substrate and the top substrate, and mix them evenly separately.

[0032] The base material is composed of sandy loam soil, cement, organic materials, habitat substrate conditioner and organic fertilizer mixed in a first preset ratio; The surface substrate is made of sandy loam soil, cement, organic materials, habitat substrate conditioner, organic fertilizer and plant seeds mixed in a second preset ratio; Among them, the proportion of cement in the surface substrate is less than that in the base substrate, and the proportion of cement in the surface substrate and the proportion of plant seeds must be such that the plant seeds can achieve the required survival rate.

[0033] S5. Ensuring the base material is in a uniform state, the base material is evenly sprayed onto the working surface to form a base layer 10 that wraps around the wire mesh 2. This base layer 10 is as follows: Figures 8 to 10 As shown.

[0034] S6. Spray water onto the surface of the base layer 10 to wet and cool the surface of the base layer 10 quickly.

[0035] S7. Spray the surface layer substrate onto the surface of the base layer 10 to form a surface layer 20 covering the base layer 10, and as shown... Figure 11 As shown, the thickness of the surface layer 20 is less than the thickness of the base layer 10.

[0036] The spraying of the surface substrate should be carried out within 8 hours after the completion of the base layer construction; in special cases, it should generally be controlled within 3 to 4 hours.

[0037] S8. Cover the surface layer 20 with non-woven fabric and perform maintenance management.

[0038] In this embodiment of the application, by cleaning the loose rocks and debris on the slope 100 and filling the depression 1001 with leveling material 1, a continuous and flat working base surface is formed, providing a uniform foundation for subsequent construction.

[0039] By hanging wire mesh 2 on the working surface and fixing it to a predetermined distance from the surface with anchor nails 3, the wire mesh 2 can be completely wrapped by a predetermined amount of base material, enhancing the overall structural strength of the slope protection layer. During the preparation of the base material and surface material, the base material and surface material are prepared separately with different cement ratios, with the surface material having a lower cement ratio than the base material. This significantly reduces the heat of hydration and alkaline substances in the surface layer 20, thereby reducing chemical and thermal damage to the seeds from a material perspective while ensuring the overall strength meets requirements.

[0040] Based on the above, first spray the base substrate onto the working surface to form a base layer 10 that wraps the wire mesh 2, then spray water onto the surface of the base layer 10 to moisten it, then spray the surface substrate onto the surface of the base layer 10 to form a surface layer 20 with a smaller thickness, and finally cover it with non-woven fabric for curing.

[0041] In this sequential operation, the water spraying and wetting step lowers the surface temperature of the base layer 10 and increases its moisture saturation, thus avoiding the problem of the moisture being quickly absorbed by the dry base layer 10 after the surface layer 20 is sprayed.

[0042] The core of the above construction method lies in the synergy of a 20% low cement ratio surface layer and a 10% water-sprayed pre-wetting base layer to construct a composite slope protection structure that is conducive to seed germination and has a strong interlayer bond. On the one hand, the reduction in the proportion of cement in the surface layer 20 directly reduces the release of hydration heat and the generation of alkaline substances. Even if a small amount of alkaline substances migrate with the water, their concentration is within a safe range due to the small total amount of cement, which fundamentally improves the chemical and thermal environment for seed germination.

[0043] On the other hand, the surface of the base layer 10 forms a wet interface after water spraying. When the surface substrate is sprayed, the water is not easily absorbed by the base layer 10. This ensures that the surface layer 20 itself has a certain moisture content to maintain the initial humidity required for seed germination, and also makes the cement hydration reaction between the two layers more complete, thereby improving the bonding strength between the base layer 10 and the surface layer 20.

[0044] The vegetation concrete ecological slope protection construction method provided in this embodiment, compared with the prior art, can systematically solve the core problems in the traditional layered spraying method, such as the limited improvement of seed germination rate due to the heat of cement hydration and the migration of alkaline substances in the base layer 10, and the rapid absorption of moisture in the surface layer 20 and the decrease in interlayer bonding due to the dryness of the base layer 10. This method improves the effective seed germination rate while enhancing the interlayer bonding strength, thus ensuring the ecological restoration effect and structural stability of the slope protection.

[0045] In some embodiments, in S2, the leveling material 1 is a planting bag filled with nutrient soil.

[0046] Before filling the planting bags with soil, the dimensions are 60×40cm, and after filling with soil, the dimensions are 55×35×14cm. The planting bags should be stacked horizontally in layers with staggered placement. When stacking, the bags should be tamped down with your feet, and the edges and tops should be filled with smaller planting bags.

[0047] In some embodiments, after S3 and before S5, planting rods 4 are laid between the wire mesh 2 and the working base; such as Figure 6 and Figure 7As shown, after the planting rods 4 are laid out, the axis of each planting rod 4 is parallel to the working base surface, and the planting rod 4 simultaneously abuts against the working base surface and the wire mesh 2.

[0048] The filling material in the plant stick 4 is a mixture of sandy loam, cement, organic materials, habitat substrate improver and organic fertilizer in a first preset ratio, which is consistent with the composition and ratio of the aforementioned base substrate.

[0049] The planting sticks are made of planting soil bags with a diameter of 5cm. During actual assembly, these planting sticks are installed at 1m vertical intervals under the 14# galvanized iron wire mesh 2. Furthermore, since the filling material inside the planting sticks has the same ratio as the base layer, to ensure the thickness of the protective layer of the iron wire mesh 2 and to prevent aggregate leakage during construction, under special process conditions, these planting sticks 4 can be replaced with straw ropes of the same size, serving only to ensure the thickness of the protective layer of the iron wire mesh 2.

[0050] In some embodiments, such as Figure 4 As shown in S3, there are multiple sets of wire mesh 2. The multiple sets of wire mesh 2 are arranged at intervals from top to bottom along a direction parallel to the working base surface, and the distance between two adjacent sets of wire mesh 2 is greater than or equal to the outer diameter of the planting stick 4 (or the width of the planting stick 4).

[0051] The step of laying the vegetation sticks 4 between the wire mesh 2 and the working base includes: Planting sticks 4 are placed into the working base through the gap between two adjacent sets of wire mesh 2, and pushed upward or downward to the inside of the wire mesh 2; the existence of the gap ensures the smoothness of the loading process of planting sticks 4.

[0052] In some embodiments, such as Figures 8 to 10 As shown, before the base layer 10 in S5 sets, the surface of the base layer 10 is textured to create a textured surface. Based on this, after S7, the surface layer 20 has multiple protrusions on the side facing the base layer 10 that match this textured surface. These protrusions work together to anchor the base layer 10 and the surface layer 20, thereby preventing relative movement between them.

[0053] Furthermore, the inward direction of each recess in the concave-convex structure is towards the space between the two adjacent sets of wire mesh 2. This avoids the wire mesh 2 being pressed down and affecting the overall strength, and ensures that the recess can be formed in a more vulnerable position, thus ensuring forming efficiency and effect.

[0054] In some embodiments, the step of texturing the surface of the base layer 10 includes: The roller is moved to the top of the base layer 10 and abuts against the surface of the base layer 10; wherein the roller has a plurality of protruding ridges spaced apart in the circumferential direction; The drive roller rolls from top to bottom, causing multiple protrusions to abut against the surface of the base layer 10 in succession. Each protrusion can form a concave structure when it abuts against the surface of the base layer 10. The depth of the concave structure is controlled by the protrusion height of the protrusion, and the spacing between adjacent concave structures is controlled by the cross-sectional perimeter of the roller.

[0055] In some embodiments, a sensor array is deployed on the working surface before the base substrate is sprayed onto the working surface. This sensor array includes at least one of a pH sensor, a temperature sensor, and a humidity sensor.

[0056] After S5 and before S6, based on the data collected from the surface of the base layer 10 by the sensor group, it is determined whether the surface of the base layer 10 meets the preset conditions. If the preset conditions are met, S6 is started.

[0057] The preset conditions include at least one of the following: pH value ≤ 7.5, temperature ≤ 35℃, and moisture content ≥ 30% on the surface of the base layer 10.

[0058] In some embodiments, S4, the base substrate also contains self-healing alkali-reducing capsules.

[0059] The self-healing alkali-reducing capsules consist of a biodegradable outer shell and acidic substances or alkali-resistant microorganisms encapsulated inside the shell.

[0060] By adopting the above technical solution, within a preset time period after the base substrate is cured, the outer shell degrades and acidic substances or alkali-resistant microorganisms are continuously released to neutralize the alkaline environment inside the base layer 10.

[0061] In some embodiments, the predetermined distance between the wire mesh 2 and the working base is 7-8cm; the thickness of the base layer 10 is 8-9cm, and the thickness of the surface layer 20 is 2-3cm.

[0062] In some embodiments, the spraying interval between the base substrate and the top substrate is 3-4 hours.

[0063] For slopes with a slope ratio ≤ 1:0.75, a spraying process combining wet and dry spraying is adopted. For slopes with a gradient greater than 1:0.75, a dry spraying process is adopted.

[0064] The hydroseeding process utilizes an air compressor with a capacity of over 12 cubic meters. Hydroseeding is carried out from top to bottom on the slope 100, with a single width of 4-6 meters and a height of 3-5 meters. Furthermore, the concrete sprayed onto the base layer 10 surface can be applied to the designed thickness in a single pass, eliminating the need for layered spraying. During spraying, the distance between the nozzle and the slope 100 should be controlled between 0.6 meters and 1.0 meters to ensure an appropriate spraying speed and facilitate compaction of the vegetation concrete. Maintaining a suitable distance between the nozzle and the sprayed surface, and ensuring the spraying angle is as close to 90 degrees as possible (with a maximum tilt angle not exceeding 10 degrees), maximizes compressive strength and minimizes rebound. The output pressure of the spray head must not be less than 0.1 MPa during the hydroseeding process.

[0065] For the outer surface of the base layer 10 with an uneven structure, the spraying process is carried out from the inside out, that is, first spray the concave structure to align the concave structure with the outer surface of the base layer 10; then spray to the required height.

[0066] During the process, the spraying movement can adopt an S-shaped or spiral motion. Furthermore, it is necessary to promptly remove sandbags or sagging vegetation concrete from the sprayed surface to allow for re-spraying.

[0067] In some embodiments, maintenance management in S8 includes sprinkler irrigation, pest and disease control, and localized repair measures.

[0068] Watering is provided via sprinkler irrigation to ensure the seedlings do not experience water shortage during their growth period. Pests and diseases should be promptly controlled to prevent their spread. Furthermore, any localized bare patches caused by construction, maintenance, or other factors should be repaired promptly.

[0069] Furthermore, maintenance and management are divided into two stages: seedling stage maintenance and growth stage maintenance. Seedling maintenance generally takes place from 0 to 60 days after the completion of construction, while growth period maintenance generally takes place from 61 to 365 days after the completion of 100mm spraying on the slope.

[0070] It should be noted that when covering with non-woven fabric, if there is a need to transplant shrubs, the transplanted shrubs do not need to be covered, and the non-woven fabric should be in close contact with the slope to prevent wind from blowing it away.

[0071] In some embodiments, after the completion of the vegetation concrete ecological slope protection, a quality inspection of the vegetation concrete is also required. Specifically, the requirements for this vegetation concrete quality inspection include: Before large-scale spraying, a trial spraying can be conducted and the results tested in a timely manner. If the inspection fails, the material ratio should be adjusted in time. The inspection indicators require that the unconfined compressive strength of the base layer at 28 days be greater than or equal to 0.25-0.4 MPa, the pH value be 6.0-8.5, and the organic matter content be 5-30 g / kg.

[0072] And within three months after the spraying is completed, the surface vegetation coverage should reach more than 85%.

[0073] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for constructing a vegetation concrete ecological slope protection, characterized in that, Includes the following steps: S1. Clear loose rocks and debris from the slope; S2. Fill the depressions on the slope with leveling material to form a continuous and flat working base surface; S3. Hang wire mesh on the working base surface and fix the wire mesh at a predetermined distance from the working base surface using anchor nails; S4. Prepare the base substrate and the top substrate, and mix them evenly separately; The base layer substrate is composed of sandy loam soil, cement, organic materials, habitat substrate conditioner, and organic fertilizer mixed in a first preset ratio; the surface layer substrate is composed of sandy loam soil, cement, organic materials, habitat substrate conditioner, organic fertilizer, and plant seeds mixed in a second preset ratio; wherein, the proportion of cement in the surface layer substrate is less than the proportion of cement in the base layer substrate; S5. Spray the base material onto the working surface to form a base layer that wraps around the wire mesh; S6. Spray water onto the base surface to moisten it; S7. Spray the surface substrate onto the surface of the base layer to form a surface layer covering the base layer, wherein the thickness of the surface layer is less than the thickness of the base layer; S8. Cover the surface layer with non-woven fabric and perform maintenance management.

2. The method of claim 1, wherein the vegetation concrete ecological slope protection construction method is characterized by, In S2, the leveling material is a planting bag, which is filled with nutrient soil.

3. The construction method for vegetation concrete ecological slope protection as described in claim 1, characterized in that, After S3 and before S5, planting sticks are placed between the wire mesh and the working base, such that the axial direction of the planting sticks is parallel to the working base, and the planting sticks simultaneously abut against the working base and the wire mesh. The filling material in the planted stick is composed of sandy loam soil, cement, organic materials, habitat substrate improver and organic fertilizer mixed in the first preset ratio.

4. The construction method for vegetation concrete ecological slope protection as described in claim 3, characterized in that, In S3, the wire mesh has multiple sets, and the multiple sets of wire mesh are arranged at intervals from top to bottom along a direction parallel to the working base surface, and the distance between two adjacent sets of wire mesh is greater than or equal to the outer diameter of the planting stick; The step of placing vegetation sticks between the wire mesh and the working base includes: The planting stick is placed into the working base through the gap between two adjacent sets of wire mesh, and pushed upward or downward to the inside of the wire mesh.

5. The construction method for vegetation concrete ecological slope protection as described in claim 4, characterized in that, Before the base layer in S5 is finally set, the surface of the base layer is textured to form an uneven structure. In this structure, the inward direction of each depression is towards the space between two adjacent sets of wire mesh.

6. The construction method for vegetation concrete ecological slope protection as described in claim 5, characterized in that, The texturing process of the base surface includes: The roller is moved to the top of the base layer and abuts against the surface of the base layer; wherein the roller has a plurality of protruding ridges spaced apart circumferentially; The roller is driven to roll from top to bottom, so that the multiple protrusions abut against the base surface in succession, and each of the protrusions can form a concave structure when it abuts against the base surface.

7. The construction method for vegetation concrete ecological slope protection as described in claim 1, characterized in that, Before spraying the base substrate onto the working surface, a sensor array is installed on the working surface; The sensor group includes at least one of a pH sensor, a temperature sensor, and a humidity sensor; After S5 and before S6, the sensor group collects data on the base surface to determine whether the base surface meets the preset conditions. If the preset conditions are met, S6 is started. The preset conditions include at least one of the following: pH value of the base surface ≤ 7.5, temperature ≤ 35℃, and moisture content ≥ 30%.

8. The construction method for vegetation concrete ecological slope protection as described in claim 1, characterized in that, In S4, the base substrate also contains self-healing alkali-reducing capsules; The self-healing alkali-reducing capsule includes a biodegradable outer shell and an acidic substance or alkali-resistant microorganisms encapsulated inside the outer shell; During a preset time period after the base substrate has cured, the outer shell degrades, and the acidic substances or alkali-resistant microorganisms are continuously released to neutralize the alkaline environment inside the base substrate.

9. The construction method for vegetation concrete ecological slope protection as described in claim 1, characterized in that, The predetermined distance between the wire mesh and the working base surface is 7-8cm; the thickness of the base layer is 8-9cm, and the thickness of the surface layer is 2-3cm.

10. The construction method for vegetation concrete ecological slope protection as described in claim 1, characterized in that, The spraying interval between the base substrate and the top substrate is 3-4 hours; Specifically, for slopes with a slope ratio ≤ 1:0.75, a spraying process combining wet and dry spraying is adopted; for slopes with a slope ratio > 1:0.75, a dry spraying process is adopted.

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