Modular ecological restoration construction method for high-steep rock slope
By using a modular ecological restoration method, and employing planting modules woven from fiber ropes and grass seed solution, as well as technologies such as grooved grooves and fixing anchors, the problem of stable attachment of vegetation substrate on steep rock slopes has been solved, achieving sustainable ecological restoration and construction safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA MCC22 GROUP CORP LTD
- Filing Date
- 2026-04-22
- Publication Date
- 2026-05-29
AI Technical Summary
Existing technologies struggle to achieve stable attachment and ecological restoration of vegetation substrates on steep rock slopes, especially on slopes with an inclination greater than 60 degrees and a height exceeding 10 meters. Vegetation substrates are easily washed away by rainwater, and traditional methods involve high material costs and significant construction risks.
A modular ecological restoration method is adopted, in which plant fibers are made into fiber ropes, which are then soaked in grass seeds and nutrient matrix solution to form mud-soaked planting base units. These units are then woven into lower and upper planting modules, which are fixed by grooves, anchor bolts, and multi-layer pressure head walls. Combined with absorbent geotextile and root inducers, stable attachment of vegetation substrate and ecological restoration are achieved.
Without relying on large amounts of reinforced concrete structures, vegetation substrates can stably attach to steep rock slopes, reduce substrate loss, provide continuous moisture and nutrient conditions, reduce material consumption and construction risks, and achieve ecological restoration functions.
Smart Images
Figure CN122095822A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of ecological restoration technology, specifically a modular ecological restoration construction method for steep rock slopes. Background Technology
[0002] Construction projects and mining activities have created numerous exposed rock slopes, which can lead to a series of geological and ecological environmental problems such as slope instability, vegetation destruction, and ecological degradation. With the development of slope stabilization technology, ecological restoration technology, which combines slope stabilization and vegetation restoration, has gradually gained widespread attention and is being applied to various slope stabilization projects.
[0003] In existing ecological restoration technologies for rock slopes, hydroseeding involves spraying a mixture of grass seeds, fertilizer, and substrate onto the slope to rebuild vegetation. This method is suitable for slopes with gentler slopes and relatively intact rock. However, for slopes with steeper slopes and more fractured rock, hydroseeding faces challenges such as insufficient substrate adhesion and susceptibility to erosion by rainwater, often requiring multiple applications to achieve the desired effect. On the other hand, grid anchoring technology, by constructing reinforced concrete grid beams on the slope and anchoring them with anchor bolts, can provide structural stability for high-risk slopes with fractured rock and steep slopes. However, this technology involves the use of large amounts of steel and concrete, resulting in high material and construction costs, and the high-altitude working environment poses certain safety risks to construction workers.
[0004] For steep rock slopes with a gradient greater than 60 degrees and a height exceeding 10 meters, ensuring the stable attachment of vegetation substrates to the slope and their continuous ecological restoration function while guaranteeing construction safety remains a technical challenge in current engineering practice. Summary of the Invention
[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a modular ecological restoration construction method for steep rock slopes that can continuously perform ecological restoration functions.
[0006] The technical solution adopted by this invention to solve its technical problem is:
[0007] A modular ecological restoration construction method for steep rock slopes includes the following steps:
[0008] S1: After pretreatment of plant fibers, fiber ropes are made. The fiber ropes are then immersed in a solution containing grass seeds and nutrient substrate, so that the solution adheres to the fiber ropes, forming a mud-immersed planting base unit.
[0009] S2: The mud-soaked planting base unit is woven into a lower planting module and an upper planting module, and grooves are set on the edges of the lower planting module and the upper planting module.
[0010] S3: Grooves are cut into the rock slope surface, the lower planting modules are installed on the slope and laid flat, so that adjacent lower planting modules in the same horizontal layer can interlock with each other through the grooves, and the first layer of pressure head wall is constructed on the upper edge of the lower planting modules.
[0011] S4: Install anchor bolts on the lower planting module so that the anchor bolts penetrate the rock strata and are exposed above the lower planting module.
[0012] S5: Lay absorbent geotextile on the lower planting module and construct the second layer of pressure head wall on the upper edge of the absorbent geotextile, so that the second layer of pressure head wall is located above the first layer of pressure head wall.
[0013] S6: Install the upper planting module on top of the absorbent geotextile, so that the upper planting module and the lower planting module interlock with each other through the interlocking grooves, and the adjacent upper planting modules in the same horizontal layer interlock with each other through the interlocking grooves. Construct the third layer of pressure wall on the upper edge of the upper planting module, and fix the first layer of pressure wall, the second layer of pressure wall and the third layer of pressure wall to the connection.
[0014] S7: Sprinkle water on the slope to keep it moist, and add a root inducer to the water.
[0015] The present invention, which adopts the above technical solution, has the following prominent features compared with the prior art:
[0016] By making plant fibers into fiber ropes and immersing them in a solution containing grass seeds and nutrient substrate to form mud-soaked planting base units, these units are then woven into lower and upper planting modules. Interlocking grooves between the modules are used to achieve mutual engagement. Combined with slope-grooved installation, multi-layer pressure head walls for layer-by-layer fixing, and anchor bolts, the vegetation substrate can be stably attached to steep rock slopes in a modular manner. This reduces substrate loss caused by excessive slope or rainwater erosion. Simultaneously, the combination of absorbent geotextile and root-inducing agents provides continuous moisture and nutrients for plant root growth. Thus, ecological restoration is achieved without relying on large amounts of reinforced concrete structures, reducing material consumption and the risks of high-altitude operations during construction.
[0017] As a preferred embodiment, a further technical solution of the present invention is:
[0018] Preferably, the plant fiber in S1 includes coconut fiber and straw fiber. The pretreatment includes soaking the coconut fiber in an alkaline solution to remove wax and steaming the straw fiber at high temperature to soften it. Using coconut fiber and straw fiber as plant fiber sources, and treating the coconut fiber with an alkaline solution to remove wax and the straw fiber with high temperature steaming to soften it, can improve the hydrophilicity and softness of the fiber, making it easier to absorb and retain moisture and nutrient matrix.
[0019] Preferably, in S1, the pretreated coconut fiber and straw fiber are mixed and twisted in a 1:1 mass ratio to form a twisted fiber rope. The pretreated coconut fiber and straw fiber are mixed and twisted in an equal mass ratio to form a twisted fiber rope, which can form a fiber carrier with high structural strength and water absorption and retention capacity, which is beneficial to the uniform adhesion and long-term maintenance of the matrix solution.
[0020] Preferably, the solution in S1 contains water, mixed grass seeds, nitrogen- and potassium-rich nutrient solution, peat moss, binder, and water-retaining agent. Each 100 parts of water corresponds to 5 to 15 parts of mixed grass seeds, 3 to 8 parts of nitrogen- and potassium-rich nutrient solution, 15 to 25 parts of peat moss, 1 to 3 parts of binder, and 0.5 to 2 parts of water-retaining agent. The water, mixed grass seeds, nitrogen- and potassium-rich nutrient solution, peat moss, binder, and water-retaining agent are prepared in a specific ratio in the substrate solution, which can provide suitable nutrient supply and physical support environment for grass seed germination and seedling growth.
[0021] Preferably, the lower planting module of S2 adopts a warp and weft weaving method, with the horizontal fiber rope spacing being eight to twelve centimeters and the vertical fiber rope spacing being twelve to eighteen centimeters, forming a rectangular grid structure. The lower planting module adopts a warp and weft weaving method to form a rectangular grid structure with horizontal and vertical fiber rope spacing, which can provide sufficient growth space and anchoring points for grass seed roots while ensuring the integrity of the module.
[0022] Preferably, in S2, the upper planting module adds horizontal reinforcing ropes on the basis of the lower planting module, and the grid size is densified to six to ten centimeters by nine to fifteen centimeters. The upper planting module adds horizontal reinforcing ropes and densifies the grid size on the basis of the lower module, which can improve the tear resistance of the module in steep slope environment and adapt to the construction needs of higher slope.
[0023] Preferably, in S4, the anchor bolts are anchored in a quincunx pattern within the rock slope. The horizontal spacing of the anchor bolts is 800 to 1200 mm, and the vertical spacing is 4000 to 6000 mm. The anchor bolts penetrate 25 to 35 cm into the rock layer and protrude 3 to 7 cm. The quincunx pattern of the anchor bolts within the rock slope can form evenly distributed anchor points on the slope surface, enhancing the overall connection stability between the planting module and the rock slope.
[0024] Preferably, in S6, the first layer of pressure head wall, the second layer of pressure head wall, and the third layer of pressure head wall are fixedly connected by pouring concrete. By fixing the three layers of pressure head walls together by pouring concrete, a continuous upper edge pressing structure can be formed to prevent the planting module from sliding down under the action of gravity.
[0025] Preferably, the root inducer in S7 contains naphthaleneacetic acid and indolebutyric acid, wherein the concentration of naphthaleneacetic acid is 30 to 70 mg / L and the concentration of indolebutyric acid is 20 to 40 mg / L. Using naphthaleneacetic acid and indolebutyric acid in a specific concentration range in the root inducer can promote the growth of vegetation roots towards rock fissures and enhance the root anchoring effect between vegetation and rock mass.
[0026] Preferably, before watering and moisturizing in step S7, the joint is filled with coconut fiber fluff. The length of the coconut fiber fluff is two to four centimeters. Filling the joint with coconut fiber fluff of a specific length before watering and moisturizing can fill the gaps between modules and reduce the loss of moisture and substrate from the joint. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the slope cross-sectional structure according to an embodiment of the present invention;
[0028] Figure 2 This is a schematic diagram of the main view structure of the slope according to an embodiment of the present invention;
[0029] Figure 3 This is a schematic diagram of the lower planting module in an embodiment of the present invention;
[0030] Figure 4 This is a schematic diagram of the upper planting module in an embodiment of the present invention.
[0031] Explanation of reference numerals in the attached diagram: 1. Lower planting module; 2. Upper planting module; 3. Absorbent geotextile; 4. First layer pressure head wall; 5. Second layer pressure head wall; 6. Third layer pressure head wall; 7. Fixing anchor bolt. Detailed Implementation
[0032] The present invention will be further illustrated below with reference to specific embodiments. The purpose of this illustration is solely to provide a better understanding of the invention. Therefore, the examples given do not limit the scope of protection of the present invention.
[0033] like Figures 1 to 4 As shown in the figure, this embodiment presents a modular ecological restoration construction method for steep rock slopes, including the following steps:
[0034] S1: After pretreatment of plant fibers, fiber ropes are made. The fiber ropes are then immersed in a solution containing grass seeds and nutrient substrate, so that the solution adheres to the fiber ropes, forming a mud-immersed planting base unit.
[0035] Preferably, the plant fibers in S1 include coconut fiber and straw fiber. Pretreatment includes soaking the coconut fiber in an alkaline solution to remove wax and softening the straw fiber through high-temperature steaming. Using coconut fiber and straw fiber as plant fiber sources, and subjecting the coconut fiber to alkaline solution dewaxing and the straw fiber to high-temperature steaming softening, can improve the hydrophilicity and softness of the fibers, making them easier to absorb and retain moisture and nutrients. Specifically, the coconut fiber is selected with a length range of 5 to 8 cm and a single fiber diameter range of 0.5 to 1 mm. The alkaline solution is a 5% sodium hydroxide aqueous solution, the soaking time is two hours, and the soaking temperature is room temperature. After soaking, the fiber is removed and repeatedly rinsed with clean water until the pH value of the fiber surface is neutral. The straw fiber is selected with a length range of 3 to 5 cm and a single fiber diameter range of 0.3 to 0.8 mm. High-temperature steaming is performed using an industrial steam cooker at a temperature of 120 degrees Celsius for 30 minutes and a pressure of 0.2 MPa. After steaming, the fiber is removed and allowed to cool naturally to room temperature.
[0036] Preferably, in step S1, pretreated coconut fiber and straw fiber are mixed and twisted in a 1:1 mass ratio to form a twisted fiber rope. This process creates a fiber carrier with high structural strength and water absorption and retention capacity, which is beneficial for the uniform adhesion and long-term retention of the matrix solution. In specific operation, the pretreated coconut fiber and straw fiber are added to a fiber mixer in a 1:1 mass ratio and mixed thoroughly for at least ten minutes to ensure uniform distribution of the two fibers. The mixed fibers are then twisted using a rope twisting machine at a twisting speed of 60 to 80 revolutions per minute and a feeding speed of 0.5 to 1 meter per minute to produce twisted fiber ropes with a diameter range of 4 to 6 centimeters. The length of a single fiber rope is cut according to the width of the subsequent module, which is controlled within one meter. After twisting, the two ends of the fiber rope are heat-sealed to prevent the fibers from loosening.
[0037] Preferably, the solution in S1 contains water, mixed grass seeds, nitrogen- and potassium-rich nutrient solution, peat moss, binder, and water-retaining agent. Each 100 parts of water corresponds to 5 to 15 parts of mixed grass seeds, 3 to 8 parts of nitrogen- and potassium-rich nutrient solution, 15 to 25 parts of peat moss, 1 to 3 parts of binder, and 0.5 to 2 parts of water-retaining agent. The water, mixed grass seeds, nitrogen- and potassium-rich nutrient solution, peat moss, binder, and water-retaining agent are prepared in a specific ratio in the substrate solution, which can provide suitable nutrient supply and physical support environment for grass seed germination and seedling growth. In specific operation, the peat moss is first passed through a 10-mesh sieve to remove coarse particles with a particle size greater than 2 millimeters. Then, weigh each component according to the proportion, add the nitrogen- and potassium-enriched nutrient solution, binder, and water-retaining agent to the water in sequence, and stir for five minutes at a speed of 300 revolutions per minute using a twin-shaft mixer to fully dissolve and disperse the additives. Then, add the sieved peat moss to the above mixture and continue stirring for five minutes. Finally, add the mixed grass seeds and stir for ten minutes. The total stirring time should not be less than fifteen minutes. After stirring, take a sample for testing to ensure that the coefficient of variation of the grass seeds in the solution does not exceed five percent. The effective component ratio of nitrogen, phosphorus, and potassium in the nitrogen- and potassium-enriched nutrient solution is three to one to two. The binder is a polyacrylamide-based polymer binder, and the water-retaining agent is a cross-linked polyacrylate superabsorbent resin. The mixed grass seeds are composed of alfalfa, crown vetch, hollyhock, red clover, tall fescue, ryegrass, bermudagrass, and zoysia grass mixed in equal weight ratios. The germination rate of each type of grass seed is not less than 85%.
[0038] S2: The mud-soaked planting base unit is woven into a lower planting module 1 and an upper planting module 2, and grooves are set on the edges of the lower planting module 1 and the upper planting module 2.
[0039] Preferably, the lower planting module 1 in S2 adopts a warp and weft weaving method, with the horizontal fiber rope spacing being eight to twelve centimeters and the vertical fiber rope spacing being twelve to eighteen centimeters, forming a rectangular grid structure. The lower planting module 1 adopts a warp and weft weaving method to form a rectangular grid structure with horizontal and vertical fiber rope spacing, which can provide sufficient growth space and anchoring points for grass seed roots while ensuring the integrity of the module. In specific operation, the mud-soaked planting base unit obtained in S1 is used as the weaving material, and warp and weft weaving is carried out on a flat weaving table, with the horizontal fiber ropes being the weft threads and the vertical fibers being the weft threads. The rope is made of warp threads, with a weft spacing of 10 cm and a warp spacing of 15 cm. During weaving, 5 to 10 cm of length is reserved at both ends of each fiber rope for edge fixing. The module width is controlled within one meter, and the length is determined according to the slope length of the slope to be repaired. The length of a single module does not exceed two meters to facilitate transportation and hoisting. After weaving, the edges of the module are locked by using a fiber rope with a diameter of 6 mm to sew around the edge of the module twice to prevent the edge fiber rope from loosening and falling off. The total weight of a single lower planting module 1 is controlled within 15 kg.
[0040] Preferably, in S2, the upper planting module 2 adds transverse reinforcing ropes to the lower planting module 1, and the grid size is increased to 6-10 cm x 9-15 cm. Adding transverse reinforcing ropes and increasing the grid size in the upper planting module 2 improves the tear resistance of the module in steep slope environments, adapting to construction requirements with higher slopes. In specific operation, the basic grid is first woven according to the weaving method of the lower planting module 1, with a weft spacing of 10 cm and a warp spacing of 15 cm. Then, transverse reinforcing ropes with a diameter of 8 mm are added in the weft direction, with one rope every 8 cm, alternating with the existing weft. Simultaneously, the weft spacing is increased to 8 cm, resulting in a final grid size of 8 cm x 12 cm. The intersections of the reinforcing ropes and warp fiber ropes are fixed using a cross-shaped binding method, where the ropes are wrapped twice and then knotted to tighten.
[0041] S3: Grooves are cut into the rock slope surface. The lower planting module 1 is installed on the slope and leveled, so that adjacent lower planting modules 1 within the same horizontal layer interlock through the interlocking grooves. The first layer of pressure wall 4 is constructed on the upper edge of the lower planting module 1. The grooves are cut horizontally along the slope surface using a pneumatic pick, with a groove width of 20 cm and a groove depth of 5 to 8 cm. The vertical spacing matches the length of the lower planting module 1, so that the upper and lower edges of the module are embedded in the adjacent grooves. The grooves provide positioning and support for the lower planting module 1, preventing the module from sliding down the slope. The installation sequence starts from the foot of the slope and proceeds upwards row by row. A crane or winch is used to lift the lower planting module 1 to the installation position on the slope and level it. Within the same horizontal layer, adjacent modules are pushed horizontally into place through the side interlocking grooves to ensure complete interlocking. The first layer of pressure wall 4 is made of precast cement blocks or steel ingots, with a height of 10 cm, and is installed tightly against the upper edge of the lower planting module 1.
[0042] S4: Install anchor bolts 7 on the lower planting module 1, ensuring that the anchor bolts 7 penetrate the rock strata and protrude above the lower planting module 1. Specifically, M16 threaded steel anchor bolts are selected for the anchor bolts 7, made of HRB400 grade hot-rolled ribbed steel bars with a yield strength of not less than 400 MPa. The anchor bolts 7 are arranged in a staggered pattern, meaning that adjacent rows of anchor bolts are staggered by half a spacing horizontally, with a horizontal spacing of 1000 mm and a vertical spacing of 5000 mm. The annular gap between the anchor bolts 7 and the hole wall is filled with anchoring adhesive or M30 cement mortar.
[0043] Preferably, in S4, the fixing anchors 7 are anchored in the rock slope in a quincunx pattern. The horizontal spacing of the fixing anchors 7 is 800 to 1200 mm, and the vertical spacing is 4000 to 6000 mm. The fixing anchors 7 penetrate 25 to 35 cm into the rock layer and protrude 3 to 7 cm. The fixing anchors 7 are anchored in the rock slope in a quincunx pattern, which can form evenly distributed anchor points on the slope surface and enhance the overall connection stability between the planting module and the rock slope surface.
[0044] S5: Lay absorbent geotextile 3 on the lower planting module 1, and construct the second layer of pressure head wall 5 on the upper edge of the absorbent geotextile 3, so that the second layer of pressure head wall 5 is located above the first layer of pressure head wall 4.
[0045] S6: Install the upper planting module 2 on top of the absorbent geotextile 3, so that the upper planting module 2 and the lower planting module 1 are interlocked by the interlocking grooves, and the adjacent upper planting modules 2 in the same horizontal layer are interlocked by the interlocking grooves. Construct the third layer pressure wall 6 on the upper edge of the upper planting module 2, and fix the first layer pressure wall 4, the second layer pressure wall 5 and the third layer pressure wall 6 together.
[0046] Preferably, in step S6, the first layer pressure wall 4, the second layer pressure wall 5, and the third layer pressure wall 6 are fixedly connected by pouring concrete. This concrete connection forms a continuous upper edge clamping structure, preventing the planting module from sliding down under gravity. Specifically, the installation direction of the upper planting module 2 is the same as that of the lower planting module 1. During installation, the lower edge of the upper planting module 2 is aligned vertically with the upper edge of the lower planting module 1. After the grooves on the lower edge of the upper planting module 2 are vertically aligned with the grooves on the upper edge of the lower planting module 1, they are pressed downwards to fully engage. The horizontal engagement method of the grooves between adjacent upper planting modules 2 within the same horizontal layer is the same as that of the lower layer. The third layer pressure wall 6 uses precast cement blocks or steel ingots of the same specifications as the first layer pressure wall 4, with a height of ten centimeters, and is installed on the upper edge of the upper planting module 2, tightly against the upper edge of the module. After the three-layer pressure head wall is installed, C25 fine stone concrete is used for pouring and connection. The coarse aggregate particle size of the concrete does not exceed 10 mm, and the slump is controlled between 5 and 7 cm.
[0047] S7: Sprinkle water on the slope to keep it moist, and add a root inducer to the water.
[0048] Preferably, the root inducer in S7 contains naphthaleneacetic acid (NAA) and indolebutyric acid (IBA), with NAA concentrations ranging from 30 to 70 mg / L and IBA concentrations ranging from 20 to 40 mg / L. Using specific concentration ranges of NAA and IBA in the root inducer promotes root growth towards rock fissures, enhancing the anchoring effect between vegetation and rock mass. In practice, NAA and IBA are first dissolved separately in small amounts of ethanol, with the ethanol volume not exceeding 5% of the final solution volume. After complete dissolution, the two solutions are mixed, and water is added while stirring to bring the volume to the required level. The final solution has a NAA concentration of 50 mg / L and an IBA concentration of 30 mg / L. The prepared root inducer solution is then loaded into a water truck or backpack sprayer and sprayed evenly onto the slope, with a spraying rate of 3 to 5 liters per square meter.
[0049] Preferably, before watering and moisturizing in step S7, the process includes filling the seams with coconut fiber wadding. The coconut fiber wadding is two to four centimeters long. Filling the seams with coconut fiber wadding of a specific length before watering and moisturizing fills the gaps between modules, reducing the loss of moisture and substrate from the seams. Specifically, the coconut fiber wadding uses scraps from the coconut fiber processing, which are mechanically loosened to form a fluffy wadding. The length of the fiber wadding is controlled within the range of two to four centimeters. Before filling, the coconut fiber wadding is sprayed with a small amount of water to bring its moisture content to 30% to 40%. A flat shovel or trowel is used to press the coconut fiber wadding into the seams between modules, including vertical seams between adjacent modules in the same horizontal layer and horizontal seams between upper and lower modules. Filling is done section by section, and after each section is filled, it is compacted with a flat shovel. The filling density of the coconut fiber wadding in the seam is such that there is no obvious indentation when pressed by hand. Watering and moisturizing can only be carried out after the seams are filled.
[0050] Plant fibers are made into fiber ropes and immersed in a solution containing grass seeds and nutrient substrate to form a mud-soaked planting base unit. These units are then woven into a lower planting module 1 and an upper planting module 2. The modules are interlocked by grooves and grooves. Combined with slope groove installation, multi-layer pressure head wall for layer-by-layer fixing, and anchor bolts 7 for anchoring, the vegetation substrate can be stably attached to steep rock slopes in a modular manner. This reduces the problem of substrate loss caused by excessive slope or rainwater erosion. At the same time, the combination of absorbent geotextile 3 and root inducer provides continuous water and nutrient conditions for the growth of vegetation roots. Thus, ecological restoration can be achieved without relying on a large amount of reinforced concrete structure, reducing material consumption and the risk of high-altitude operations during construction.
[0051] The above description is merely a preferred embodiment of the present invention and does not limit the scope of the present invention. All equivalent changes made based on the description and drawings of the present invention are included within the scope of the present invention.
Claims
1. A modular ecological restoration construction method for steep rock slopes, characterized in that: Includes the following steps: S1: After pretreatment of plant fibers, fiber ropes are made. The fiber ropes are then immersed in a solution containing grass seeds and nutrient substrate, so that the solution adheres to the fiber ropes, forming a mud-immersed planting base unit. S2: The mud-soaked planting base unit is woven into a lower planting module and an upper planting module, and grooves are set on the edges of the lower planting module and the upper planting module. S3: Grooves are cut into the rock slope surface, the lower planting modules are installed on the slope surface and laid flat, so that adjacent lower planting modules in the same horizontal layer can interlock with each other through the grooves, and the first layer of pressure head wall is constructed on the upper edge of the lower planting modules. S4: Install anchor bolts on the lower planting module so that the anchor bolts penetrate the rock strata and are exposed above the lower planting module; S5: Lay absorbent geotextile on the lower planting module and construct the second layer of pressure head wall on the upper edge of the absorbent geotextile, so that the second layer of pressure head wall is located above the first layer of pressure head wall; S6: Install the upper planting module on top of the absorbent geotextile, so that the upper planting module and the lower planting module interlock with each other through the interlocking grooves, and make adjacent upper planting modules in the same horizontal layer interlock with each other through the interlocking grooves. Construct the third layer of pressure head wall at the upper edge of the upper planting module, and fix the first layer of pressure head wall, the second layer of pressure head wall and the third layer of pressure head wall to the connection. S7: Sprinkle water on the slope to keep it moist, and add a root inducer to the water.
2. The modular ecological restoration construction method for steep rock slopes according to claim 1, characterized in that: The plant fibers in S1 include coconut fiber and straw fiber. The pretreatment includes soaking the coconut fiber in an alkaline solution to remove wax and steaming the straw fiber at high temperature to soften it.
3. The modular ecological restoration construction method for steep rock slopes according to claim 2, characterized in that: In S1, pretreated coconut fiber and straw fiber are mixed and twisted in a 1:1 mass ratio to form a twisted fiber rope.
4. The modular ecological restoration construction method for steep rock slopes according to claim 1, characterized in that: The solution in S1 contains water, mixed grass seeds, nitrogen- and potassium-rich nutrient solution, peat moss, binder, and water-retaining agent. For every 100 parts of water, there are 5 to 15 parts of mixed grass seeds, 3 to 8 parts of nitrogen- and potassium-rich nutrient solution, 15 to 25 parts of peat moss, 1 to 3 parts of binder, and 0.5 to 2 parts of water-retaining agent.
5. The modular ecological restoration construction method for steep rock slopes according to claim 1, characterized in that: The lower planting module of S2 adopts a warp and weft weaving method, with the horizontal fiber rope spacing being eight to twelve centimeters and the vertical fiber rope spacing being twelve to eighteen centimeters, forming a rectangular grid structure.
6. The modular ecological restoration construction method for steep rock slopes according to claim 5, characterized in that: The upper planting module in S2 adds horizontal reinforcing ropes to the lower planting module, and the grid size is increased to six to ten centimeters by nine to fifteen centimeters.
7. The modular ecological restoration construction method for steep rock slopes according to claim 1, characterized in that: In S4, the anchor bolts are anchored in a quincunx pattern within the rock slope. The horizontal spacing of the anchor bolts is 800 to 1200 mm, and the vertical spacing is 4000 to 6000 mm. The anchor bolts penetrate 25 to 35 cm into the rock layer and protrude 3 to 7 cm.
8. The modular ecological restoration construction method for steep rock slopes according to claim 1, characterized in that: In S6, the first, second, and third pressure head walls are fixedly connected by pouring concrete.
9. The modular ecological restoration construction method for steep rock slopes according to claim 1, characterized in that: The root inducer in S7 contains naphthaleneacetic acid (NAA) and indolebutyric acid (IBA), with NAA concentrations ranging from 30 to 70 mg / L and IBA concentrations ranging from 20 to 40 mg / L.
10. The modular ecological restoration construction method for steep rock slopes according to claim 1, characterized in that: Before sprinkling water to moisturize, the S7 also includes a step of filling the seams with coconut fiber fluff, which is two to four centimeters long.