CN111395367A - Vegetation concrete greening structure and method for mountain high-speed rocky side slope - Google Patents

Abstract

The invention discloses a vegetation concrete greening structure and method for a high-speed rocky side slope in a mountainous area, and belongs to the technical field of roadbed side slope construction. A vegetation concrete greening structure for high-speed stone side slope in mountain area includes the basic unit, the basic unit is located on the slope surface of side slope, be equipped with the stratum reticulare on the basic unit, be equipped with the transition layer on the stratum reticulare, be equipped with vegetation concrete layer on the transition layer, vegetation concrete layer upper berth is equipped with the non-woven fabrics, it is equipped with a plurality of stock, it is a plurality of still to insert at the interval on the slope surface of side slope, the stock exposes domatic one end and passes the basic unit with the stratum reticulare is connected. The invention can effectively prevent rainwater from scouring the rocky slope, reduce water evaporation, effectively reduce water and soil loss, has good protection effect on the rocky slope, can effectively solve the problem of difficult greening of the rocky slope and forms an ecological green protection structure.

Description

Vegetation concrete greening structure and method for mountain high-speed rocky side slope

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of roadbed slope construction, in particular to a vegetation concrete greening structure and method for a high-speed rocky slope in a mountainous area.

[ background of the invention ]

The development of the mountain expressway plays an increasingly important role in the economic field, and the emphasis on the expressway in China is increasingly remarkable. In the large-scale construction process of highways in high-altitude mountain areas, a large number of rocky slopes with difficult vegetation recovery are formed, and the rocky slopes are bound to face protection and greening.

In order to implement the national green engineering construction concept, the mountain expressway is constructed into an ecological green engineering, so that once the original landform is destroyed in the construction of the expressway in a high-altitude mountain area, a rock slope ecological greening and protecting technology is needed.

[ summary of the invention ]

The invention aims to solve the problems and provides a vegetation concrete greening structure and method for a high-speed rocky side slope in a mountainous area, which can effectively prevent rainwater from washing the rocky side slope, reduce water evaporation, effectively reduce water and soil loss and have an excellent effect of protecting the rocky side slope.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the utility model provides a vegetation concrete greening structure for high-speed stone side slope in mountain area, locates on the side slope is domatic, including the basic unit, the basic unit is located on the side slope is domatic, be equipped with the stratum reticulare on the basic unit, be equipped with the transition layer on the stratum reticulare, be equipped with vegetation concrete layer on the transition layer, vegetation concrete layer upper berth is equipped with the non-woven fabrics, it is equipped with a plurality of stocks, a plurality of still inserts at the interval on the side slope is domatic the stock exposes domatic one end and passes the basic unit with the stratum reticulare is connected.

Furthermore, be equipped with a plurality of prefabricated square type concrete frameworks that are connected on the slope face of side slope, it is a plurality of all be equipped with in the prefabricated square type concrete framework afforestation structure.

Further, the transition layer includes multilayer crops straw layer and multilayer dry strip layer of planting, the multilayer crops straw layer and multilayer dry strip layer of planting from down up interval in proper order is laid, just lie in the bottommost layer in the transition layer still laid the degradable membrane in the crops straw layer, the area after the degradable membrane expandes is greater than the area on crops straw layer, just the periphery of degradable membrane is located on the prefabricated square concrete skeleton.

Further, the base layer is a wet soil layer, and the thickness of the base layer is 5-8 cm; the thickness of the vegetation concrete layer is 2-5 cm.

Furthermore, the net layer is made of iron wire, an annular body is formed at one end of the anchor rod exposed out of the side slope, and the iron wire is connected to the annular bodies.

Further, the thickness of the degradable film is 0.2-3 mm.

Furthermore, a plurality of fixing rods for fixing the transition layer are vertically inserted into the base layer, the fixing rods are arranged at intervals, and one ends of the fixing rods far away from the base layer penetrate through the net layer and are inserted into the transition layer.

Further, the mixture for forming the vegetation concrete layer comprises the following raw materials in parts by weight per cubic meter: 780 kg fertile soil, 1040kg mud, 800kg greening additive, 25-30kg greening additive, 360 kg farmyard organic fertilizer and 600kg green plant seeds and 0.8-1.0kg green plant seeds;

the greening additive comprises 20-30 parts of vitamins, 30-40 parts of calcium powder, 12-16 parts of iron ore powder, 10-15 parts of silicon ore powder, 5-10 parts of compound fertilizer, 1-5 parts of urea and 0.2-0.4 part of active ferment agent.

The fertile soil comprises two or more than two of leaching soil, garden soil, sandy soil and leaf mold soil.

Further, the degradable film is mainly prepared from the following raw materials in parts by weight: 20-30 parts of polyvinyl alcohol, 10-15 parts of starch, 5-10 parts of plasticizer, 5-8 parts of chitosan oligosaccharide, 5-8 parts of lignin, 3-5 parts of surfactant, 3-5 parts of defoaming agent and 1-3 parts of sodium naphthalene acetate;

the preparation method of the degradable film comprises the following steps:

(1) weighing the raw materials in parts by weight, dissolving polyvinyl alcohol in a mixing tank by using solvent water, adding a plasticizer, a surfactant, a defoaming agent and modified starch into the mixing tank, and uniformly stirring to obtain a mixed material A;

(2) adding chitosan oligosaccharide into the aqueous solution, stirring for 2 hours at room temperature to completely dissolve the chitosan oligosaccharide, wherein the mass of the chitosan oligosaccharide accounts for 60-70% of the specific weight of the acetic acid aqueous solution; adding lignin into an acetone aqueous solution, and stirring at room temperature for 2 hours to completely dissolve the lignin, wherein the mass of the lignin accounts for 15-20% of the proportion of the acetone aqueous solution; dripping the dissolved lignin solution into the chitosan oligosaccharide solution, and stirring for 1.5-2.5 hours at 50-60 ℃ to obtain a mixed material B;

(3) dissolving sodium naphthylacetate in water to obtain sodium naphthylacetate aqueous solution; adding the mixed material B and the sodium naphthylacetate aqueous solution into the mixed material A, and uniformly stirring to obtain a feed liquid; filtering the feed liquid to adjust the particle size to be more than 200 meshes;

(4) defoaming the feed liquid to obtain slurry for later use;

(5) and casting the slurry on a roller or steel belt casting equipment for drying and molding, wherein the thickness of the film is controlled to be 0.2-3 mm, and the film preparation is finished.

The invention also provides a greening method of the vegetation concrete greening structure for the mountain high-speed rocky side slope, which comprises the following steps:

(1) preliminarily cleaning the stone slope surface, and leveling the slope surface;

(2) setting a prefabricated square concrete framework, measuring and setting out, determining the position of an anchor rod, hanging a net and spraying the anchor, and primarily spraying wet soil to form a wet soil base layer;

(3) laying a thin layer of crop straw on a wet soil base layer, laying a degradable film, placing the periphery of the degradable film on a frame of a prefabricated square concrete framework, and continuously weaving a transition layer formed by a crop straw layer and dry planting strips on the degradable film;

(4) uniformly mixing cement, fertile soil, a greening additive, farmyard organic fertilizer and green plant seeds to form vegetation mixed soil;

(5) mixing the vegetation mixed soil and water into vegetation concrete, uniformly spraying the vegetation concrete to the slope surface on which the transition layer is laid, coating the transition layer on the vegetation concrete layer and the side surface of the vegetation concrete layer by using a degradable film, and covering the vegetation concrete layer with non-woven fabrics;

(6) watering and maintaining for 2 months, observing plant growth, and timely replanting and killing insects.

By adopting the technical scheme, the invention has the beneficial effects that:

(1) the invention has simple operation in the implementation process, low manufacturing cost, strong practicability and high protection efficiency, and can effectively prevent the erosion of rainwater, reduce the water evaporation and effectively reduce the water and soil loss when protecting the rocky side slope. The invention can effectively solve the problem of difficult greening of the rocky slope, and form an ecological green protection structure, wherein the used concrete greening additive is used for increasing the slope protection strength and the anti-scouring capability, and the vegetation concrete layer does not crack, and the chemical characteristics of the vegetation concrete can be changed, so that a better plant growth environment is created, thereby improving the greening coverage rate in the high-speed building process of the mountain area, economically and effectively protecting the rocky side slope of the highway in the mountain area, and being beneficial to building ecological high-quality engineering.

(2) The degradable film is laid in the transition layer, and the degradable film can play a role in coating the side surfaces of the transition layer and the vegetation concrete layer at the initial stage, namely before the degradable film is degraded, so that the excessive rapid water loss on the transition layer and the vegetation concrete layer is prevented; can provide the required nutrient composition of growth for the vegetation after the degradation, further promote the growth of vegetation, and then improve the utility model discloses protective capacities to the side slope.

(3) The degradable film of the invention adds the components of chitosan oligosaccharide, lignin, sodium naphthylacetate and the like on the basis of the original degradable film components of polyvinyl alcohol, starch, plasticizer, surfactant, defoamer and the like, because the chitosan oligosaccharide and the lignin have good degradability, and the chitosan oligosaccharide also changes soil flora, promotes the growth of beneficial microorganisms, can induce the disease resistance of plants, has immunity and killing effect on various fungi, bacteria and viruses, can be used as biological pesticide, growth regulator, fertilizer and the like, but has higher viscosity and is easy to cause certain influence on the sterilizing capability of the plants, and the addition of the sodium naphthylacetate aqueous solution not only reduces the viscosity of the chitosan oligosaccharide, but also promotes the development of the plants, enhances the capabilities of drought resistance, disease resistance, saline alkali resistance and the like of the plants, and the addition of the lignin further improves the mechanical property of the degradable film, the degradation film has the advantages that the degradation speed is high, soil bacteria can be killed, the disease resistance of vegetation is improved, the root system development of the vegetation is promoted, and the protection capability of the degradation film on the side slope is finally improved.

[ description of the drawings ]

FIG. 1 is a first cross-sectional view of a vegetation concrete greening structure for high-speed rocky slopes in mountainous areas according to an embodiment of the present invention;

FIG. 2 is a second cross-sectional view of a vegetation concrete greening structure for high-speed rocky slopes in mountainous areas according to an embodiment of the present invention;

FIG. 3 is a partial top view of a vegetation concrete greening structure for high-speed rocky slopes in mountainous areas in accordance with an embodiment of the present invention;

in the figure, 1-slope surface, 2-base layer, 3-net layer, 4-transition layer, 5-vegetation concrete layer, 6-non-woven fabric, 7-anchor rod, 8-shattering platform, 9-wire netting, 10-step, 11-retaining wall, 12-foam light soil, 13-blind ditch, 131-soft permeable pipe, 14-gravel layer, 15-permeable geotextile, 16-reinforcing anchor rod, 17-supporting steel plate, 18-guide plate, 19-rotating sleeve, 20-sphere, 21-hanging ring, 22-hanging hook and 23-reinforcing mesh.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Examples

Please refer to fig. 1 to 3, a vegetation concrete greening structure for a mountain high-speed rocky slope is arranged on a slope surface 1, and comprises a base layer 2, wherein the base layer 2 is arranged on the slope surface 1, a net layer 3 is arranged on the base layer 2, a transition layer 4 is arranged on the net layer 3, a vegetation concrete layer 5 is arranged on the transition layer 4, a non-woven fabric 6 is laid on the vegetation concrete layer 5, a plurality of anchor rods 7 are inserted on the slope surface 1 at intervals, before the anchor rods 7 are inserted, holes convenient for inserting the anchor rods 7 are firstly excavated on the slope, and after the anchor rods 7 are inserted into the holes, cement mortar is poured into the holes, so that the anchor rods 7 are fixed. One end of the anchor rods 7 exposed out of the slope surface penetrates through the base layer 2 and is connected with the net layer 3. In this embodiment, the length of each anchor rod 7 exposed out of the slope surface 1 is 10 cm. And a crushing and falling platform 8 is also arranged on the slope surface 1 of the side slope.

Further, in order to improve the stability of the greening structure on the slope, improve the protection effect of the slope, and also in order to divide the area for construction and improve the working efficiency, a plurality of connected prefabricated latticed concrete frameworks (not shown) are arranged on the slope surface 1 of the slope, and the construction and arrangement method of the prefabricated latticed concrete frameworks is the same as that of the prior art and is not repeated here. And the plurality of prefabricated square concrete frameworks are internally provided with the greening structures.

Further, the transition layer 4 includes multilayer crops straw layer 41 and multilayer dry planting strip layer 42, the multilayer crops straw layer 41 and multilayer dry planting strip layer 42 from up interval laying in proper order down, just lie in the bottommost layer in the transition layer 4 degradable membrane 43 has still been laid in the crops straw layer 41, the area after degradable membrane 43 expandes is greater than the area of crops straw layer 41, just the periphery of degradable membrane 43 is located on the prefabricated square lattice type concrete skeleton 10 to make degradable membrane 43 can be with the side cladding of transition layer 4 and vegetation concrete layer 5 on it. Wherein the degradable film 43 has a thickness of 0.2 to 3 mm. The transition layer 4 plays two roles, namely, plays roles of fixing the concrete vegetation layer and moisturizing in the initial stage; on the other hand, after the later-period decay, the fertilizer provides certain nutrients for the vegetation, and is beneficial to the growth of the vegetation. And the degradable film 43 can prevent the water loss on the transition layer 4 and the vegetation concrete layer 5 from being too fast at the initial stage, namely before the degradable film 43 is degraded, and can provide nutrient components required by growth for vegetation after degradation, so that the growth of the vegetation is further promoted, and the protection capability of the invention on the side slope is further improved.

Furthermore, as the selected green plants in the greening structure are plants with developed root systems, the base layer 2 is set to be a wet soil layer, and the thickness of the base layer 2 is set to be 5-8 cm; the thickness of the vegetation concrete layer 5 is set to be 2-5 cm, so that the requirement of full growth of roots in the later period of vegetation is met, and the effect of stabilizing the side slope is further achieved. In this embodiment, the thickness of the base layer 2 is preferably set to 6 cm, and the thickness of the vegetation concrete layer 5 is set to 5 cm.

Further, the mesh layer 3 is made of iron wire, an annular body 71 is formed at one end of the anchor rod 7 exposed on the slope surface 1 of the side slope, and the iron wire is connected to the plurality of annular bodies 71, so that the mesh layer 3 is fastened on the side slope, and the subsequent stable arrangement of the transition layer 4 is facilitated.

Furthermore, a plurality of fixing rods 9 for fixing the transition layer 4 are vertically inserted into the base layer 2, the fixing rods 9 are arranged at intervals, and one ends of the fixing rods 9 far away from the base layer 2 penetrate through the net layer 3 and are inserted into the transition layer 4.

Further, the mixture for forming the vegetation concrete layer 5 can be selected from the following raw materials in parts by weight per cubic meter: 780 kg fertile soil, 1040kg mud, 800kg greening additive, 25-30kg greening additive, 360 kg farmyard organic fertilizer and 600kg green plant seeds and 0.8-1.0kg green plant seeds; the greening additive comprises 20-30 parts of vitamins, 30-40 parts of calcium powder, 12-16 parts of iron ore powder, 10-15 parts of silicon ore powder, 5-10 parts of compound fertilizer, 1-5 parts of urea and 0.2-0.4 part of active ferment agent. The fertile soil comprises mixed soil of eluviation soil and leaf mold. In this embodiment, it is preferable that the mixture composing the vegetation concrete layer 5 includes the following raw materials by weight per cubic meter: 840kg of fertile soil, 600kg of slurry, 28kg of greening additive, 480kg of farmyard organic fertilizer and 0.8kg of green plant seeds; the greening additive comprises 25 parts of vitamin, 35 parts of calcium powder, 14 parts of iron ore powder, 13 parts of silicon ore powder, 8 parts of compound fertilizer, 3 parts of urea and 0.3 part of active ferment agent.

The vegetation concrete layer provides good growth matrix and nutrient components for the growth of green plants, and achieves good greening slope protection effect.

Further, the degradable film can be prepared from the following raw materials in parts by weight: 20-30 parts of polyvinyl alcohol, 10-15 parts of starch, 5-10 parts of plasticizer, 5-8 parts of chitosan oligosaccharide, 5-8 parts of lignin, 3-5 parts of surfactant, 3-5 parts of defoaming agent and 1-3 parts of sodium naphthalene acetate. In this embodiment, it is preferable that: 25 parts of polyvinyl alcohol, 18 parts of starch, 8 parts of plasticizer, 6 parts of chitosan oligosaccharide, 6 parts of lignin, 4 parts of surfactant, 4 parts of defoaming agent and 2 parts of sodium naphthalene acetate.

The preparation method of the degradable film comprises the following steps:

(1) weighing the raw materials in parts by weight, dissolving polyvinyl alcohol in a mixing tank by using solvent water, adding a plasticizer, a surfactant, a defoaming agent and modified starch into the mixing tank, and uniformly stirring to obtain a mixed material A;

(2) respectively dissolving chitosan oligosaccharide and lignin, specifically adding chitosan oligosaccharide into an aqueous solution, stirring at room temperature for 2 hours to completely dissolve the chitosan oligosaccharide, wherein the mass of the chitosan oligosaccharide accounts for 70% of the specific weight of the acetic acid aqueous solution; adding lignin into an acetone aqueous solution, and stirring at room temperature for 2 hours to completely dissolve the lignin, wherein the mass of the lignin accounts for 20% of the proportion of the acetone aqueous solution; dropwise adding the dissolved lignin solution into the chitosan oligosaccharide solution, and stirring for 2 hours at 60 ℃ to obtain a mixed material B;

(3) dissolving sodium naphthylacetate in water to obtain sodium naphthylacetate aqueous solution; adding the mixed material B and the sodium naphthylacetate aqueous solution into the mixed material A, and uniformly stirring to obtain a feed liquid; filtering the feed liquid to adjust the particle size to be more than 200 meshes;

(4) defoaming the feed liquid to obtain slurry for later use;

(5) and casting the slurry on a roller or steel belt casting equipment for drying and molding, wherein the thickness of the film is controlled to be 0.2-3 mm, and the film preparation is finished.

The degradable film of the invention adds the components of chitosan oligosaccharide, lignin, sodium naphthylacetate and the like on the basis of the original degradable film components of polyvinyl alcohol, starch, plasticizer, surfactant, defoamer and the like, because the chitosan oligosaccharide and the lignin have good degradability, and the chitosan oligosaccharide also changes soil flora, promotes the growth of beneficial microorganisms, can induce the disease resistance of plants, has immunity and killing effect on various fungi, bacteria and viruses, can be used as biological pesticide, growth regulator, fertilizer and the like, but has higher viscosity and is easy to cause certain influence on the sterilizing capability of the plants, and the addition of the sodium naphthylacetate aqueous solution not only reduces the viscosity of the chitosan oligosaccharide, but also promotes the development of the plants, enhances the capabilities of drought resistance, disease resistance, saline alkali resistance and the like of the plants, and the addition of the lignin further improves the mechanical property of the degradable film and prevents the degradable film from being easily damaged, the biodegradable degradable film can not play a role in coating in the early stage, so that the biodegradability of the degradable film is greatly improved compared with that of the original degradable film, the degradation speed is high, soil bacteria can be killed, the disease resistance of vegetation is improved, the root system development of the vegetation is promoted, and the protection capability of the degradable film on side slopes is finally improved.

The greening method of the vegetation concrete greening structure for the high-speed rocky side slope in the mountainous area comprises the following steps:

(1) preliminarily cleaning the stone slope surface, and leveling the slope surface;

(2) setting a prefabricated square concrete framework, measuring and setting out, determining the position of an anchor rod 7, hanging a net and spraying the anchor, and primarily spraying wet soil to form a wet soil base layer 2;

(3) firstly, laying a thin layer of crop straws on the wet soil base layer 2, then laying a degradable film, unfolding the degradable film, placing the periphery of the degradable film on a frame of the prefabricated square concrete framework, and continuously weaving a transition layer 4 formed by a crop straw layer and dry planting strips on the degradable film;

(4) uniformly mixing cement, fertile soil, a greening additive, farmyard organic fertilizer and green plant seeds to form vegetation mixed soil;

(5) mixing vegetation mixed soil and water into vegetation concrete, uniformly spraying the vegetation concrete to the slope surface on which the transition layer 4 is laid, coating the side surfaces of the transition layer 4 and the vegetation concrete layer 5 on the vegetation concrete layer by using a degradable film 43, and covering the vegetation concrete layer 5 with a non-woven fabric 6;

(6) watering and maintaining for 2 months, observing plant growth, and timely replanting and killing insects.

Wherein, the green plant seeds are selected from grass seeds and flower seeds with strong developed root system stress resistance, extensive management and certain self-propagation capacity, and the dosage per cubic meter is as follows: 0.6kg of grass seeds and 0.2kg of flower seeds.

When the net is hung and the anchor is sprayed, the anchor needs to be drilled and punched vertically to the slope surface or at an angle of 15-20 degrees, and the length of the anchor rod 7 exposed out of the slope surface 1 is 10 cm, so that the iron wire net can be lapped.

The time interval between the primary spraying of the base layer 2 and the secondary spraying of the vegetation concrete layer 5 is 6 hours, and the stirring time of the mixture is not less than 20 minutes.

The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a vegetation concrete greening structure for high-speed stone side slope in mountain area, locates on the side slope is domatic, its characterized in that, including the basic unit, the basic unit is located on the side slope is domatic, be equipped with the stratum reticulare on the basic unit, be equipped with the transition layer on the stratum reticulare, be equipped with vegetation concrete layer on the transition layer, vegetation concrete layer upper berth is equipped with the non-woven fabrics, it is equipped with a plurality of stock to go back the interval on the side slope is domatic inserts, and is a plurality of the stock exposes domatic one end and passes the basic unit with the stratum reticulare.

2. A vegetation concrete greening structure for mountain high speed rocky slopes according to claim 1, wherein a plurality of connected prefabricated latticed concrete frameworks are arranged on the slope surface of the slope, and the greening structure is arranged in each of the prefabricated latticed concrete frameworks.

3. The vegetation concrete greening structure for the high-speed rocky side slope in the mountainous area of claim 1, wherein the transition layer comprises a plurality of layers of crop straw layers and a plurality of layers of dry planting strips, the layers of crop straw layers and the layers of dry planting strips are sequentially laid at intervals from bottom to top, a degradable film is further laid in the crop straw layers at the bottommost layer in the transition layer, the area of the degradable film after being unfolded is larger than that of the crop straw layers, and the periphery of the degradable film is arranged on the prefabricated square concrete framework.

4. A vegetation concrete greening structure for mountain high speed rocky slopes according to claim 1, wherein said base layer is a wet soil layer, said base layer having a thickness of 5-8 cm; the thickness of the vegetation concrete layer is 2-5 cm.

5. A vegetation concrete greening structure for high-speed rocky slopes in mountainous areas as claimed in claim 1, wherein the mesh layer is a wire mesh, an annular body is formed at one end of the anchor rod exposed out of the slope, and the wire mesh is connected to the plurality of annular bodies.

6. A vegetation concrete greening structure for high speed rocky slopes in mountainous areas as claimed in claim 5, wherein the thickness of said degradable film is 0.2-3 mm.

7. A vegetation concrete greening structure for high speed rocky side slopes in mountainous areas as claimed in claim 5, wherein a plurality of fixing rods for fixing the transition layer are further vertically inserted on the base layer, the plurality of fixing rods are arranged at intervals, and one ends of the fixing rods far away from the base layer penetrate through the mesh layer and are arranged in the transition layer.

8. A vegetation concrete greening structure for mountain high speed rocky slopes according to claim 1, wherein the mixture composing the vegetation concrete layer comprises the following raw materials in parts by weight per cubic meter: 780 kg fertile soil, 1040kg mud, 800kg greening additive, 25-30kg greening additive, 360 kg farmyard organic fertilizer and 600kg green plant seeds and 0.8-1.0kg green plant seeds;

the greening additive comprises 20-30 parts of vitamins, 30-40 parts of calcium powder, 12-16 parts of iron ore powder, 10-15 parts of silicon ore powder, 5-10 parts of compound fertilizer, 1-5 parts of urea and 0.2-0.4 part of active ferment agent.

The fertile soil comprises two or more than two of leaching soil, garden soil, sandy soil and leaf mold soil.

9. A vegetation concrete greening structure for high speed rocky side slopes in mountainous areas as claimed in claim 7, wherein said degradable film is mainly made of the following raw materials in parts by weight: 20-30 parts of polyvinyl alcohol, 10-15 parts of starch, 5-10 parts of plasticizer, 5-8 parts of chitosan oligosaccharide, 5-8 parts of lignin, 3-5 parts of surfactant, 3-5 parts of defoaming agent and 1-3 parts of sodium naphthalene acetate;

the preparation method of the degradable film comprises the following steps:

(1) weighing the raw materials in parts by weight, dissolving polyvinyl alcohol in a mixing tank by using solvent water, adding a plasticizer, a surfactant, a defoaming agent and modified starch into the mixing tank, and uniformly stirring to obtain a mixed material A;

(2) adding chitosan oligosaccharide into the aqueous solution, stirring for 2 hours at room temperature to completely dissolve the chitosan oligosaccharide, wherein the mass of the chitosan oligosaccharide accounts for 60-70% of the specific weight of the acetic acid aqueous solution; adding lignin into an acetone aqueous solution, and stirring at room temperature for 2 hours to completely dissolve the lignin, wherein the mass of the lignin accounts for 15-20% of the proportion of the acetone aqueous solution; dripping the dissolved lignin solution into the chitosan oligosaccharide solution, and stirring for 1.5-2.5 hours at 50-60 ℃ to obtain a mixed material B;

(3) dissolving sodium naphthylacetate in water to obtain sodium naphthylacetate aqueous solution; adding the mixed material B and the sodium naphthylacetate aqueous solution into the mixed material A, and uniformly stirring to obtain a feed liquid; filtering the feed liquid to adjust the particle size to be more than 200 meshes;

(4) defoaming the feed liquid to obtain slurry for later use;

(5) and casting the slurry on a roller or steel belt casting equipment for drying and molding, wherein the thickness of the film is controlled to be 0.2-3 mm, and the film preparation is finished.

10. A method of afforesting a vegetation concrete afforestation structure for high speed rocky side slopes in mountainous areas according to any one of claims 1 to 9, comprising the steps of:

(1) preliminarily cleaning the stone slope surface, and leveling the slope surface;

(2) setting a prefabricated square concrete framework, measuring and setting out, determining the position of an anchor rod, hanging a net and spraying the anchor, and primarily spraying wet soil to form a wet soil base layer;

(3) laying a thin layer of crop straw on a wet soil base layer, laying a degradable film, placing the periphery of the degradable film on a frame of a prefabricated square concrete framework, and continuously weaving a transition layer formed by a crop straw layer and dry planting strips on the degradable film;

(4) uniformly mixing cement, fertile soil, a greening additive, farmyard organic fertilizer and green plant seeds to form vegetation mixed soil;

(5) mixing the vegetation mixed soil and water into vegetation concrete, uniformly spraying the vegetation concrete to the slope surface on which the transition layer is paved, and covering a non-woven fabric on the vegetation concrete layer;

(6) watering and maintaining for 2 months, observing plant growth, and timely replanting and killing insects.

Images