Slope protection construction method and protection structure

Abstract

The invention relates to the technical field of slope protection, and discloses a slope protection construction method which is suitable for slope protection of an excavation slope and particularly suitable for slope protection of the excavation slope in a loess area and in a steep slope. According to the slope protection construction method, the first layer of hanging net is laid on the slope surface of the slope and fixed through rivets, and the vegetation bars are installed on the first layer of hanging net to form an in-vitro framework; a vegetation layer continues to be laid, plant seeds and materials are sprayed and seeded on the vegetation layer, ecological restoration is conducted on the side slope through vegetation, and a'vegetation blood and meat layer 'is formed; a second layer of hanging net and a plant fiber net are laid on the vegetation layer, an irrigation device is installed on the plant fiber net to form a'skin layer ', and the irrigation device provides guarantee for smooth growth of vegetation. The invention further provides a slope protection structure. The slope protection construction method and the protection structure have the advantages of being environmentally friendly, stable, reliable, low in construction cost and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of slope protection, and in particular to a slope protection construction method and a protection structure. Background Art

[0002] Loess is widely distributed across central and western my country. Its unique geological characteristics present numerous challenges and opportunities in engineering construction. With the acceleration of urbanization and the continuous advancement of infrastructure construction, the emergence of steep loess excavation slopes has become inevitable. However, these steep loess excavation slopes also face a series of challenges.

[0003] Loess slopes are prone to soil erosion and surface erosion under natural factors such as rainfall, which seriously endanger the stability of the slopes and the surrounding ecological environment. However, soil erosion on loess slopes is more likely to occur in heavy rain or rainstorms that exceed the slope's bearing capacity, or in drought and strong winds. These environments will cause soil erosion on loess slopes, and these environments often alternate with time and region. When the slope is dry and arid, the slope lacks water storage capacity, and the stability of the sand decreases, leading to loss. When water scours, the damage caused by water flow to the slope is often due to the convergence of water flow. As the scouring continues, it causes greater damage. Therefore, a comprehensive water regulation and soil conservation method is needed to solve the problems facing loess slopes.

[0004] Traditional slope protection structures, such as mortar-laid stone and concrete lattice structures, are heavy, expensive, and prone to cracking. Rainwater flows through these cracks into the structure and erodes the soil beneath it. Under prolonged rainfall, the slope protection structure gradually loses its original function under its own weight. Furthermore, these slope protection structures cover the slope surface, making it impossible to plant vegetation and significantly reducing the aesthetic appeal of the cut slope.

[0005] In the prior art, the prior art with publication number CN112942381A discloses a method for slope protection using geogrids and planting bags, but it does not consider the impact of strong rainfall erosion and infiltration on slope stability, and is only applicable to situations where the slope is relatively gentle, but is not applicable to the protection of steeper slopes in loess areas. In addition, the slope in this prior art is made of layers of vegetation bags stacked together by the friction between them, which is prone to local displacement under the action of rainfall or external disturbances. The prior art with publication number CN215105072U discloses a riverbank soil slope with a geocell structure. The anchor rods in this technology are steel bars, which are easily corroded and damaged under the long-term action of rainwater or river water, and have poor environmental protection and durability. In addition, the geocells laid along the slope in this technology are based on geotextiles or felt fiber materials, which cannot prevent rainwater or river water from eroding and infiltrating the slope. In addition, in this technology, the first geocells are stacked horizontally layer by layer to form a reinforced body of a certain height and width, which is suitable for fill slopes, but not for the protection of steep facades in loess areas.

[0006] Therefore, how to solve the problem in the existing technology that slope protection structures such as mortar-laid stone and concrete lattice are heavy, have high engineering costs and are easily eroded and damaged, and cannot meet the requirements of slope protection in loess areas, has become an urgent problem to be solved by technical personnel in this field. Summary of the Invention

[0007] The purpose of the present invention is to provide a slope protection construction method and protection structure to solve the problems existing in the above-mentioned related technologies, enhance the stability of the excavated slope, improve the erosion resistance of the slope surface, and meet the slope protection requirements in the loess region; and the slope protection structure is lightweight and pollution-free, which reduces the project cost and has high adaptability.

[0008] To achieve the above object, the present invention provides the following solutions:

[0009] The present invention provides a slope protection construction method, comprising the following steps:

[0010] Step 1: Lay the first layer of hanging net on the slope surface;

[0011] Step 2: Fix the first layer of hanging net on the slope surface with rivets, with one end of the rivet extending into the slope;

[0012] Step 3: Installing the planting rods on the first hanging net, with adjacent planting rods spaced apart;

[0013] Step 4: Laying a vegetation layer on the first hanging net layer and the planting rods, the vegetation layer covering the first hanging net layer and the top of the planting rods and filling the space between adjacent planting rods; spraying plant seeds and spraying materials on the vegetation layer;

[0014] Step 5: laying a second layer of hanging net on the vegetation layer, spraying plant seeds and spraying materials on the vegetation layer to form a crust layer between the second layer of hanging net and the vegetation layer;

[0015] Step six: laying a plant fiber net on the second hanging net layer and the crust layer, and installing an irrigation device on the plant fiber net.

[0016] Preferably, before performing step 1, the on-site slope is cut according to the designed height, width and slope rate of the slope, and the original slope surface is cleaned and repaired to make the slope flat.

[0017] Preferably, when the slope adopts a stepped structure, when laying the first layer of hanging net, the vegetation layer, the second layer of hanging net and the plant fiber net, the first layer of hanging net, the vegetation layer, the second layer of hanging net and the plant fiber net wrap the corners of the slope steps and extend to the plane of the slope steps.

[0018] Preferably, a reserved hole is drilled on the slope surface, and residual soil in the reserved hole is cleared, one end of the rivet is pressed into the reserved hole, and a closed block is used to block the gap between the reserved hole and the rivet.

[0019] Preferably, the vegetation layer comprises modified materials and improved soil;

[0020] The vegetation layer has a drainage port and an inverted filter layer structure. The drainage port can be used to remove excess water in the vegetation layer, and the inverted filter layer structure can prevent the drainage port from being blocked.

[0021] Preferably, the plant seeds include one or more of the following vegetation species:

[0022] Alkali grass, tall wool, alfalfa, wheat grass, sea buckthorn, and licorice.

[0023] Preferably, the first layer of hanging mesh and the second layer of hanging mesh are both galvanized chain link fences.

[0024] Preferably, the plant fiber net is a coconut fiber blanket, and the amount of the plant fiber net used is 200g / square meter.

[0025] Preferably, the irrigation device includes a water supply pipe, a water delivery pipe and a watering column. The water supply pipe can be connected to an external water source. One end of the water delivery pipe is connected to the water supply pipe, and the other end is connected to the watering column.

[0026] The present invention also provides a slope protection structure, which is manufactured using the above-mentioned slope protection construction method, comprising:

[0027] a first layer of hanging netting, the first layer of hanging netting being laid on the slope surface and fixed by rivets;

[0028] A planting rod, the planting rod being arranged on the first hanging net;

[0029] A vegetation layer, the vegetation layer being arranged on top of the first hanging net layer, the vegetation layer comprising plant seeds and spraying materials;

[0030] a second layer of hanging netting, the second layer of hanging netting being connected to the vegetation layer and forming a crust layer;

[0031] a plant fiber net, the plant fiber net being laid on top of the second hanging net layer and the crust layer;

[0032] An irrigation device is provided on the plant fiber net.

[0033] Compared with the related art, the present invention has achieved the following technical effects: the present invention provides a slope protection construction method, comprising the following steps: step one, laying a first layer of hanging net on the slope surface; step two, fixing the first layer of hanging net on the slope surface with rivets, with one end of the rivet extending into the slope; step three, installing planting rods on the first layer of hanging net, with adjacent planting rods arranged at intervals; step four, laying a vegetation layer on the first layer of hanging net and the planting rods, the vegetation layer covering the first layer of hanging net and the top of the planting rods, and filling the space between adjacent planting rods; spraying plant seeds and spraying materials on the vegetation layer; step five, laying a second layer of hanging net on the vegetation layer, spraying the plant seeds and spraying materials on the vegetation layer to form a crust layer between the second layer of hanging net and the vegetation layer; step six, laying a plant fiber net on the second layer of hanging net and the crust layer, and installing an irrigation device on the plant fiber net.

[0034] The slope protection construction method of the present invention is suitable for slope protection of excavated slopes, and is particularly suitable for slope protection of excavated slopes in loess areas and with steeper slopes. Using the slope protection construction method of the present invention, a first layer of hanging netting is laid on the slope surface and fixed with rivets. Planting rods are installed on the first layer of hanging netting to form an "ex vivo skeleton." A vegetation layer is then laid, and plant seeds and spraying materials are sprayed on the vegetation layer. The slope is then ecologically restored using vegetation to form a "vegetation flesh and blood layer." A second layer of hanging netting and plant fiber netting is laid on the vegetation layer, and an irrigation device is installed on the plant fiber netting to form a "skin layer." The irrigation device provides a guarantee for the smooth growth of vegetation.

[0035] The present invention also provides a slope protection structure constructed using the aforementioned slope protection construction method. Composed of two layers of hanging mesh, vegetation rods, rivets, a vegetation layer, and a plant fiber mesh, the slope protection structure not only enhances the stability of excavated slopes, improves the slope's resistance to erosion, and prevents rainwater infiltration, but also contributes to ecological greening. Compared to traditional concrete structures and mortar masonry, the slope protection structure of the present invention offers advantages such as being pollution-free, low-cost, and lightweight. Even on steep slopes, it is less likely to collapse due to its own weight.

[0036] The slope protection construction method and protection structure of the present invention fully combine the characteristics of the original loess structure, have the advantages of being green and environmentally friendly, stable and reliable, and having low engineering cost, and can be widely used in engineering fields such as geological disaster prevention and control and ecological management in loess areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, 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.

[0038] Figure 1 A schematic cross-sectional view of a slope protection structure provided by an embodiment of the present invention;

[0039] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0040] Figure 3 This is a schematic front view of the slope protection structure provided by an embodiment of the present invention in the slope direction.

[0041] In the figure: 1. Slope; 2. Rivets; 3. First layer of hanging net; 4. Second layer of hanging net; 5. Vegetation layer; 6. Vegetation rods; 7. Plant fiber net; 8. Irrigation device; 9. Water supply pipe; 10. Water delivery pipe. DETAILED DESCRIPTION

[0042] 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.

[0043] The purpose of the present invention is to provide a slope protection construction method and protection structure to solve the problems existing in the above-mentioned related technologies, enhance the stability of the excavated slope, improve the erosion resistance of the slope surface, and meet the slope protection requirements in the loess region; and the slope protection structure is lightweight and pollution-free, which reduces the project cost and has high adaptability.

[0044] 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.

[0045] Example 1

[0046] The present invention provides a slope protection construction method, please refer to Figure 1-Figure 3 , including the following steps:

[0047] Step 1: Lay the first layer of hanging net 3 on the slope surface;

[0048] Step 2: Use rivets 2 to fix the first layer of hanging net 3 on the slope surface, with one end of the rivet 2 extending into the slope;

[0049] Step 3: Install the planting rods 6 on the first hanging net 3, with adjacent planting rods 6 spaced apart;

[0050] Step 4: Lay a vegetation layer 5 on the first layer of hanging net 3 and the planting rods 6. The vegetation layer 5 covers the top of the first layer of hanging net 3 and the planting rods 6 and fills the space between adjacent planting rods 6. Sow plant seeds and spraying materials on the vegetation layer 5.

[0051] Step 5: Lay a second layer of hanging net 4 on the vegetation layer 5, and spray the plant seeds and spraying materials on the vegetation layer 5 to form a crust layer between the second layer of hanging net 4 and the vegetation layer 5;

[0052] Step six: laying a plant fiber net 7 on the second hanging net 4 and the crust layer, and installing an irrigation device 8 on the plant fiber net 7 .

[0053] The slope protection construction method of the present invention is suitable for slope protection of excavated slopes, and is particularly suitable for slope protection of excavated slopes in loess areas and with steeper slopes. Using the slope protection construction method of the present invention, a first layer of hanging net 3 is laid on the slope surface and fixed with rivets 2. Vegetation rods 6 are installed on the first layer of hanging net 3 to form an "ex vivo skeleton." A vegetation layer 5 is then laid, and plant seeds and seeding materials are sprayed on the vegetation layer 5. The slope is then ecologically restored using vegetation to form a "vegetation flesh and blood layer." A second layer of hanging net 4 and a plant fiber net 7 are laid on the vegetation layer 5, and an irrigation device 8 is installed on the plant fiber net 7 to form a "skin layer." The irrigation device 8 provides a guarantee for the smooth growth of vegetation.

[0054] The slope protection construction method of the present invention fully considers the characteristics of high structural strength and good uprightness of loess, has the advantages of being stable and reliable, green and environmentally friendly, and significantly improving the anti-erosion ability of slopes. It can be widely used in many fields such as slope geological disaster prevention and control and ecological management in loess areas. It should be explained here that in actual construction, a slope with a gradient of 30° to 60° is a steep slope. The slope protection construction method of the present invention is suitable for the protection construction of excavated slopes, especially for the excavation protection of steep loess slopes with a slope greater than 45°, effectively enhancing the stability of the slope structure and improving the efficiency of slope protection construction.

[0055] Before proceeding to step 1, the slope on site is cut according to the designed height, width, and slope gradient. The original slope surface is cleaned and repaired to make it smooth. Micro-topography of the slope is also improved. The site is cleaned and construction materials are prepared to prepare for subsequent construction.

[0056] When the slope adopts a stepped structure, when laying the first layer of hanging net 3, the vegetation layer 5, the second layer of hanging net 4 and the plant fiber net 7, the first layer of hanging net 3, the vegetation layer 5, the second layer of hanging net 4 and the plant fiber net 7 wrap the corners of the slope steps and extend to the plane of the slope steps, ensuring that the protective structure can cover the slope surface and the step surface of the slope, improving the integrity of the slope protection structure, and thus further enhancing the protection effect.

[0057] In this specific embodiment, the first layer of mesh 3 is cut to a size that matches the length and width of the slope. It is then placed firmly against the slope, extending upward to the second step until it wraps around the step corner and extending for more than 10 cm along the step surface. Finally, the first layer of mesh 3 is extended downward to the bottom of the slope to cover the entire slope. This same process is applied to the vegetation layer 5, the second layer of mesh 4, and the plant fiber mesh 7, ensuring the slope protection structure is secure. It should be noted that when laying the vegetation layer 5, the second layer of hanging net 4 and the plant fiber net 7, the length extended along the step surface can be adjusted according to actual construction needs to meet different construction conditions and ensure the quality of protective construction. For example, when laying the vegetation layer 5, the vegetation layer 5 extends more than 1 cm along the step surface; the second layer of hanging net 4 covers the step corners and extends more than 10 cm inward along the step surface; the plant fiber net 7 covers the step corners and extends more than 5 cm inward along the step surface; in the actual construction process, the extension length of each layer of material can be adjusted according to the actual working conditions to ensure the smooth progress of construction and the slope protection effect.

[0058] The present invention utilizes rivets 2 to secure the first layer of mesh 3. One end of the rivet 2 is driven into the slope, while the outer end secures the various layers of material, ensuring the stability of the laying of the vegetation layer 5, the second layer of mesh 4, and the plant fiber mesh 7. This also provides a stable installation foundation for the planting rods 6 and irrigation devices 8. During rivet 2 installation, a pre-drilled hole is first cut into the slope surface, and any remaining soil removed from the hole. One end of the rivet 2 is then pressed into the hole, and a closed block is used to block the gap between the pre-drilled hole and the rivet 2, ensuring a secure installation.

[0059] In this specific embodiment, the vegetation layer 5 includes modified materials and improved soil; the modified materials improve the vegetation layer 5 through physical, chemical or biological effects, thereby enhancing the structural stability and erosion resistance of the vegetation layer 5; the improved soil can improve the plant growth environment and increase the vegetation survival rate, thereby enhancing the ecological effect of slope protection construction.

[0060] It should also be noted that the vegetation layer 5 has a drain outlet and a filter layer structure. The drain outlet can be used to remove excess water in the vegetation layer 5 to ensure the smooth growth of plants. The filter layer structure can prevent the drain outlet from being blocked, ensuring that the vegetation layer 5 can provide a suitable growth foundation for the selected plants.

[0061] Since prefabricated vegetation layer 5 materials or components are available on the market, prefabricated materials can be used in the actual construction process. Based on the topography, structural characteristics, climate and surrounding vegetation characteristics, soil erosion, surrounding soil type and nutrition of the slope and support and management project, combined with the application of new ecological soil consolidation and soil improvement materials, the filling materials of the vegetation layer purchased on the market can be improved to meet the growth needs of different vegetation. After the vegetation layer is improved, the performance of the vegetation layer 5 can be further optimized by controlling the thickness of the spraying material to adapt to the slope and slope direction according to the slope and direction of the excavated slope and the physical and chemical properties of the local loess. Grass seeds or other plant seeds are selected and mixed with the improved soil and sprayed evenly on the surface of the vegetation layer 5 until the vegetation layer 5 is covered to form a vegetation layer.

[0062] In this embodiment, the selected plant seeds include one or more of the following vegetation species:

[0063] Alkali grass, tall wool, alfalfa, wheat grass, sea buckthorn, and licorice.

[0064] Plant seeds are sprayed on the vegetation layer 5 to form a vegetation layer. During the actual construction process, suitable plant species can be selected for planting according to the actual slope soil type, thereby ensuring the slope protection effect while enhancing the slope ecological greening effect.

[0065] The first and second layers of mesh 3 and 4 are both galvanized chain link fences, which improve their corrosion resistance and ensure their structural reliability. In this embodiment, the galvanized chain link fences used for the first and second layers of mesh 3 and 4 have an inner diameter of 2 mm and a mesh aperture of 5 cm. In actual construction, galvanized chain link fences of different specifications may also be used.

[0066] It should also be noted that the rivets 2 are made of geotextile material with an inner diameter of 14 mm, cut into 1-meter lengths, and embedded 80 cm into the ground, leaving 20 cm exposed above ground. The rivets 2 are inserted into the soil at a 1-meter x 1-meter spacing. The planting rods 6 are 100 cm long and 10 cm wide, and are hung on the first layer of mesh 3 at 3-meter intervals.

[0067] In this specific embodiment, the plant fiber net 7 is a coconut fiber blanket, which is a completely natural material to avoid pollution. The amount of the plant fiber net 7 is 200g / square meter. During the actual construction process, the amount of the plant fiber net 7 can be adjusted according to different construction conditions to meet various construction needs.

[0068] More specifically, irrigation device 8 includes a water supply pipe 9, a water delivery pipe 10, and a watering column 11. The water supply pipe 9 is connected to an external water source, while one end of the water delivery pipe 10 is connected to the water supply pipe 9 and the other end is connected to the watering column 11. In practical applications, irrigation device 8 is used to maintain the water requirements of plant growth, further enhancing the ecological protection of the slope.

[0069] During the actual construction process, the water supply pipe 9 is cut to the horizontal length of the slope and laid on the secondary step. A thinner water pipe 10 is inserted into the water supply pipe 9 every 1 meter and laid on the slope at a distance of 1 meter until the entire slope is covered. A sprinkler column 11 is inserted into the water pipe 10 every 1 meter.

[0070] Example 2

[0071] This embodiment provides a slope protection construction method, comprising the following steps:

[0072] Part I: Micro-topography improvement:

[0073] (a) Prepare materials and site: Prepare the materials required for slope protection according to the project design requirements, including two layers of hanging nets, vegetation rods 6, rivets 2, vegetation layer 5, and plant fiber net 7. Repair and level the loess slope according to the designed height, width, and slope.

[0074] (b) Install the first layer of hanging mesh 3.

[0075] (c) Inserting rivet 2: A soil reserved hole is excavated at a corresponding position on the slope surface, and the residual soil in the reserved hole is removed; rivet 2 is pressed into the soil reserved hole, and the reserved hole closing block is made to just close the soil reserved hole.

[0076] (d) Hanging the planting sticks 6: Reserve positions inside the slope and on the first layer of the hanging net 3, set the distance, and hang the planting sticks 6 on the reserved positions.

[0077] (e) Pouring the vegetation layer 5.

[0078] (f) Hang the second layer of hanging net 4.

[0079] (g) Hanging plant fiber net 7.

[0080] (h) Hanging irrigation device 8.

[0081] Part II: Vegetation Restoration Construction:

[0082] (i) Improve the content of the original vegetation layer 5.

[0083] (j) Optimizing the structure of the vegetation layer 5 after structural improvement.

[0084] (k) Grass seeds are mixed with spraying materials and sprayed on the vegetation layer 5 to grow plants.

[0085] (1) Prepare the crusting layer material, select microorganisms and mix them with the material and spray them on the vegetation layer 5 to form a crusting layer.

[0086] The third part further maintains the vegetation layer.

[0087] The other contents of the slope protection construction method of this embodiment are the same as those of the first embodiment and will not be repeated here.

[0088] Example 3

[0089] This embodiment provides a slope protection construction method. In this embodiment, after completing the first layer of hanging mesh 3, the first layer of vegetation is poured. The thickness of the first layer of vegetation is in the range of 6cm to 8cm. After installing the second layer of hanging mesh 4, the second layer of vegetation is poured and sprayed. The thickness of the second layer of vegetation is in the range of 3cm to 5cm.

[0090] In practical applications, one or more layers of vegetation can be laid and sprayed on the slope based on different geological conditions, such as slope soil pH, fertility, moisture content, and vegetation type. This approach balances ecological restoration with engineering protection, ensuring slope greening protection effectiveness and enhancing the flexibility and adaptability of slope protection construction methods. The thickness of the vegetation layer can be adjusted based on actual construction conditions.

[0091] The other contents of the slope protection construction method of this embodiment are the same as those of the first embodiment and will not be repeated here.

[0092] Example 4

[0093] This embodiment provides a slope protection structure, which is manufactured using any one of the slope protection construction methods of embodiments 1 to 3, and includes:

[0094] The first layer of hanging net 3 is laid on the slope surface and fixed with rivets 2;

[0095] Planting rod 6, the planting rod 6 is arranged on the first layer of hanging net 3;

[0096] The vegetation layer 5 is arranged on the top of the first hanging net 3, and the vegetation layer 5 has plant seeds and spraying materials;

[0097] The second hanging net 4 is connected to the vegetation layer 5 and forms a crust layer;

[0098] Plant fiber net 7, plant fiber net 7 is laid on top of the second hanging net 4 and the crust layer;

[0099] The irrigation device 8 is arranged on the plant fiber net 7 .

[0100] The slope protection structure of the present invention can fully combine the structural characteristics of the original loess and can be used for excavated slopes with very steep slopes. The structure is composed of two layers of hanging nets, vegetation rods 6, rivets 2, vegetation layers 5 and plant fiber nets 7. It not only has the functions of enhancing the stability of the excavated slope, improving the slope's anti-erosion ability and preventing rainwater from infiltrating the slope body 1, but also can play a role in greening. Compared with traditional concrete structures and mortar masonry sheets, the slope protection structure of the present invention is made of new materials with the advantages of being pollution-free, low in cost and light in weight. Even on a steep slope, it is difficult for the overall structure to collapse due to its own weight. Compared with the existing technology, the slope protection structure of the present invention fully considers the characteristics of high strength and good uprightness of the loess structure, and has the advantages of being stable, reliable, green and environmentally friendly, and significantly improving the slope's anti-erosion ability. It can be widely used in many fields such as slope geological disaster prevention and control and ecological management in loess areas.

[0101] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A slope protection construction method, characterized in that: The steps include: Step 1: Lay the first layer of hanging net on the slope surface; Step 2: Fix the first layer of hanging net on the slope surface with rivets, with one end of the rivet extending into the slope; Step 3: Installing the planting rods on the first hanging net, with adjacent planting rods spaced apart; Step 4: Laying a vegetation layer on the first hanging net layer and the planting rods, the vegetation layer covering the first hanging net layer and the top of the planting rods and filling the space between adjacent planting rods; spraying plant seeds and spraying materials on the vegetation layer; Step 5: laying a second layer of hanging net on the vegetation layer, spraying plant seeds and spraying materials on the vegetation layer to form a crust layer between the second layer of hanging net and the vegetation layer; Step six: laying a plant fiber net on the second hanging net layer and the crust layer, and installing an irrigation device on the plant fiber net.

2. The slope protection construction method according to claim 1, characterized in that: Before proceeding to step one, the on-site slope is cut according to the designed height, width and slope rate, and the original slope surface is cleaned and repaired to make the slope flat.

3. The slope protection construction method according to claim 1, characterized in that: When the slope adopts a stepped structure, when laying the first layer of hanging net, the vegetation layer, the second layer of hanging net and the plant fiber net, the first layer of hanging net, the vegetation layer, the second layer of hanging net and the plant fiber net wrap the corners of the slope steps and extend to the plane of the slope steps.

4. The slope protection construction method according to claim 1, characterized in that: A reserved hole is dug on the slope surface, and residual soil in the reserved hole is cleared, one end of the rivet is pressed into the reserved hole, and a closed block is used to block the gap between the reserved hole and the rivet.

5. The slope protection construction method according to claim 1, characterized in that: The vegetation layer includes modified materials and improved soil; The vegetation layer has a drainage port and an inverted filter layer structure. The drainage port can be used to remove excess water in the vegetation layer, and the inverted filter layer structure can prevent the drainage port from being blocked.

6. The slope protection construction method according to claim 1, characterized in that: The plant seeds include one or more of the following vegetation species: Alkali grass, tall wool, alfalfa, wheat grass, sea buckthorn, and licorice.

7. The slope protection construction method according to claim 1, characterized in that: The first layer of hanging mesh and the second layer of hanging mesh are both galvanized chain link fences.

8. The slope protection construction method according to claim 1, characterized in that: The plant fiber net is a coconut fiber blanket, and the amount of the plant fiber net is 200g / square meter.

9. The slope protection construction method according to claim 1, characterized in that: The irrigation device includes a water supply pipe, a water delivery pipe and a watering column. The water supply pipe can be connected to an external water source. One end of the water delivery pipe is connected to the water supply pipe, and the other end is connected to the watering column.

10. A slope protection structure, characterized in that: The slope protection construction method according to any one of claims 1 to 9 is adopted, comprising: a first layer of hanging netting, the first layer of hanging netting being laid on the slope surface and fixed by rivets; A planting stick, the planting stick being arranged on the first hanging net; A vegetation layer, the vegetation layer being arranged on top of the first hanging net layer, the vegetation layer comprising plant seeds and spraying materials; a second layer of hanging netting, the second layer of hanging netting being connected to the vegetation layer and forming a crust layer; a plant fiber net, the plant fiber net being laid on top of the second hanging net layer and the crust layer; An irrigation device is provided on the plant fiber net.

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