High and steep rock slope ecological protection system and its construction method

Abstract

The invention discloses an ecological protection system for a high and steep rock slope and a construction method thereof, relates to the technical field of ecological protection, and provides an ecological protection system suitable for high and steep rock slopes and easy to construct. The slope ecological protection system includes a plurality of protection bodies, the protection bodies include a vegetation bag, a reinforcement rope, a metal flexible net and at least three anchor rods, the anchor rods are anchored on the slope, a vegetation bag space is formed between the anchor rods, the reinforcement rope is connected to the anchor rod and surrounds the vegetation bag space, the metal flexible net is unfolded and connected to the reinforcement rope, the vegetation bag is located in the vegetation bag space and between the slope and the metal flexible net, a filling port is provided on the vegetation bag, the vegetation bag is filled with a foreign soil matrix, the vegetation bag is connected to the anchor rod, and the metal flexible net presses the vegetation bag; the protection bodies are closely arranged to form an ecological protection system covering the slope. During construction, the anchor rods, vegetation bags, reinforcement ropes, metal flexible nets, etc. are first set up before the foreign soil matrix is ​​filled.

Description

Technical Field

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

[0002] Flexible slope ecological protection mainly involves planting plants on the slope or combining plants with flexible structures, using plant roots or flexible protection systems to consolidate the slope soil to effectively stabilize the slope, thereby achieving the purpose of slope protection. Ecological protection also plays an irreplaceable ecological function in improving environmental quality, beautifying and purifying the environment, maintaining ecological balance, and coordinating the surrounding landscape. It is a green and environmentally friendly protection method.

[0003] At present, the commonly used ecological protection technologies for rock slopes include spray planting technology, planting bags (strips, pots), floating planting troughs, hanging cage bricks, hanging metal planting cages, planting seedlings in planting holes, concrete frame beam method, etc. The Chinese patent application number 201811270047.4 discloses an ecological protection structure for rock cutting slopes of high-speed railways, including N-level ecological protection slopes, where N is a positive integer; each level of ecological protection slope includes a slope body, multiple main anchor rods, multiple ecological bags and a steel wire mesh, wherein the multiple main anchor rods are inserted into the slope body, and anchor piers are provided at the intersection of the main anchor rods and the surface of the slope body, and the anchor piers are provided with anchor head closures on the outside; the multiple ecological bags are evenly laid on the slope body, and the steel wire mesh is laid on the outside of the multiple ecological bags, and the steel wire mesh is fixed by steel wire anchor rods; when N is greater than 1, a slope platform is provided between adjacent ecological protection slopes, and a platform intercepting ditch is provided on the slope platform. This patent mainly relies on stacked eco-bags for slope protection and uses steel rope gratings to prevent the eco-bags from falling off.

[0004] Excavation of mining, quarrying, water conservancy and hydropower projects will form high and steep rock slopes with great height and slope, which puts higher requirements on the slope ecological protection system. When conventional slope ecological protection systems are applied to high and steep rock slopes, it is easy for the foreign soil matrix to be difficult to adhere, and coupled with the falling force of the vegetation itself, it is easy for the whole to fall off; due to natural effects such as rain erosion, wind, and ultraviolet rays, the foreign soil matrix flow is gradually lost; under the influence of the foreign soil matrix, growing vegetation and geological disasters, the high and steep slopes themselves are less stable and prone to collapse, requiring reinforcement and stability. When the above-mentioned cited patent technology is applied to high and steep rock slopes, the eco-bags are prone to collapse during the stacking process, and the stacking process is more difficult, resulting in greater construction difficulty. Summary of the invention

[0005] A technical problem solved by the present invention is to provide an ecological protection system suitable for high and steep rock slopes and easy to construct.

[0006] The technical solution adopted to solve the above problems is: the slope ecological protection system includes multiple protection bodies, the protection bodies include vegetation bags, reinforcement ropes, metal flexible nets and at least three anchor rods, the anchor rods are anchored on the slope, vegetation bag spaces are formed between the anchor rods, the reinforcement ropes are connected to the anchor rods and surround the vegetation bag space, the metal flexible net is unfolded and connected to the reinforcement ropes, the vegetation bag is located in the vegetation bag space and between the slope and the metal flexible net, a filling port is provided on the vegetation bag, the vegetation bag is filled with foreign soil matrix, the vegetation bag is connected to the anchor rods, and the metal flexible net presses the vegetation bag; the protection bodies are closely arranged to form an ecological protection system covering the slope.

[0007] Furthermore, the protective body includes four anchor rods, and a rectangular vegetation bag space is formed between the four anchor rods, and the shape of the vegetation bag is rectangular.

[0008] Furthermore: the vegetation bag is made of non-woven fabric.

[0009] Furthermore, the vegetation bag is provided with a transverse connection part and a longitudinal connection part, and the transverse connection part and the longitudinal connection part separate the vegetation bag into a plurality of vegetation bag monomers.

[0010] Furthermore, adjacent protective bodies share an anchor rod, and the metal flexible nets of a plurality of adjacent protective bodies are made into one piece.

[0011] Furthermore, a pull ring is arranged at the end of the anchor rod, the reinforcement rope passes through the pull ring, and the edge of the vegetation bag is connected to the pull ring through a connecting ring.

[0012] Furthermore, the foreign soil matrix includes soil, seeds, fertilizers, water retaining agents, organic matter and stabilizers.

[0013] Another technical problem solved by the present invention is to provide a construction method for the above ecological protection system.

[0014] The technical solution adopted to solve the above problems is: the slope ecological protection system construction method includes the following steps:

[0015] A. Anchor rods are anchored into the slope. At least three anchor rods form a group of anchor rods, and a vegetation bag space is formed between the anchor rods.

[0016] B. Connect the reinforcement rope to the anchor rod, and the reinforcement rope corresponds to the space of the vegetation bag one by one and surrounds the corresponding space of the vegetation bag;

[0017] C. Lay vegetation bags along the slope from top to bottom, set a vegetation bag in a vegetation bag space, connect the vegetation bag with the anchor rod, and set a filling port on the vegetation bag;

[0018] D. Lay the metal flexible net from top to bottom along the slope, cover the vegetation bag with the metal flexible net, and connect the metal flexible net with the reinforcement rope;

[0019] E. Fill the soil matrix into the vegetation bag through the mesh holes and filling port of the metal flexible net.

[0020] The beneficial effects of the present invention are as follows: 1. The protective body covers the slope, which has a reinforcing effect on the high and steep rock slopes with potential slope geological disasters. The vegetation bag can grow plants, which can carry out ecological restoration and greening of the high and steep rock slopes. At the same time, the metal flexible net also has a stabilizing effect on the growing vegetation attached to the rock wall. It can be seen that the slope reinforcement and ecological restoration of this application are organically combined, which can play a good ecological protection role on the slope.

[0021] 2. This application first lays and fixes the vegetation bags and metal flexible nets, and then fills the soil matrix. Compared with the cited patent of the background technology, the construction is simpler and more economical. Since there is no stacking of vegetation bags, there is no problem of vegetation bag collapse, which is more reliable in construction and use, and more suitable for the terrain of high and steep rock slopes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a side view of the ecological protection system for high and steep rock slopes;

[0023] Figure 2 It is a side view of a single protective body;

[0024] Figure 3 This is the front view of the ecological protection system for high and steep rock slopes;

[0025] Figure 4 This is a front view of the high and steep rock slope ecological protection system without the metal flexible net;

[0026] Marked in the figure are: protective body 1, anchor rod 11, metal flexible net 12, vegetation bag 13, vegetation bag unit 131, transverse connecting part 132, longitudinal connecting part 133, filling port 134, reinforcement rope 14, pull ring 15, connecting ring 16, imported soil matrix 17, slope 3, vegetation bag space 4. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] like Figures 1 to 4As shown: the slope ecological protection system includes multiple protection bodies 1, the protection body 1 includes a vegetation bag 13, a reinforcement rope 14, a metal flexible net 12 and at least three anchor rods 11, the anchor rods 11 are anchored on the slope 3, and a vegetation bag space 4 is formed between the anchor rods 11. The reinforcement rope 14 is connected to the anchor rods 11 and surrounds the vegetation bag space 4. The metal flexible net 12 is unfolded and connected to the reinforcement rope 14. The vegetation bag 13 is located in the vegetation bag space 4 and between the slope 3 and the metal flexible net 12. A filling port 134 is provided on the vegetation bag 13. The vegetation bag 13 is filled with a foreign soil matrix 17. The vegetation bag 13 is connected to the anchor rods 11, and the metal flexible net 12 presses the vegetation bag 13; the protection bodies 1 are closely arranged to form an ecological protection system covering the slope 3.

[0029] The protective body 1 of the present invention covers the slope and has a reinforcing effect on the high and steep rock slope 3 where there is a potential slope geological disaster. The vegetation bag 13 can grow plants, which can perform ecological restoration and greening on the high and steep rock slope 3. At the same time, the metal flexible mesh 12 also has a stabilizing effect on the growing vegetation attached to the rock wall. It can be seen that the reinforcement of the slope 3 of the present application is organically combined with ecological restoration, which can play a good ecological protection role on the slope 3.

[0030] In order to simplify the arrangement of the anchor rods 11 and facilitate construction, the protective body 1 includes four anchor rods 11, and a rectangular vegetation bag space 4 is formed between the four anchor rods 11. The shape of the vegetation bag 13 is rectangular. The lateral spacing of the anchor rods 11 is preferably 3 to 4 meters, and the longitudinal spacing is preferably 1 to 2 meters. The anchor rods 11 are existing anchor rods, which can be rigid anchor rods, preferably flexible anchor rods. The spacing between the four sides of the vegetation bag 13 and the reinforcement rope 14 is preferably 0.2 to 0.3 meters, so as to reserve a vegetation crown diameter growth radiation zone.

[0031] The vegetation bag 13 is preferably made of non-woven fabric. Non-woven fabric is a new type of fiber product with softness, breathability and planar structure, which is directly formed by various fiber web forming methods and consolidation technologies from polymer slices, short fibers or filaments such as polypropylene or polyester fibers. The vegetation bag 13 made of non-woven fabric has the advantages of being water-permeable and soil-retaining, anti-ultraviolet aging, and having good material strength and flexibility.

[0032] If the vegetation bag 13 has only one space for accommodating the foreign soil matrix 17, the space is relatively large, and the foreign soil matrix is ​​easily concentrated at the lower part of the vegetation bag 13. In order to evenly distribute the foreign soil matrix 17 in the vegetation bag 13, the vegetation bag 13 has a transverse connection part 132 and a longitudinal connection part 133, and the transverse connection part 132 and the longitudinal connection part 133 divide the vegetation bag 13 into a plurality of vegetation bag monomers 131. In order to be able to fill the foreign soil matrix 17 into the vegetation bag monomer 131, a filling port 134 should be provided on each vegetation bag monomer 131.

[0033] Adjacent protective bodies 1 can share the anchor rod 11. The metal flexible nets 12 of a plurality of adjacent protective bodies 1 are made into one piece, that is, a plurality of protective bodies 1 can share a larger metal flexible net 12.

[0034] The specific method of connecting the anchor rod 11 with the reinforcement rope 14 and the vegetation bag 13 is preferably as follows: a pull ring 15 is provided at the end of the anchor rod 11, the reinforcement rope 14 passes through the pull ring 15, and the edge of the vegetation bag 13 is connected to the pull ring 15 through a connecting ring 16. The reinforcement rope 14 can be only one or divided into several sections, for example, the reinforcement rope 14 includes a transverse reinforcement rope and a longitudinal reinforcement rope. The metal flexible net 12 can be connected to the reinforcement rope 14 by a suture rope. The reinforcement rope 14 can be a steel wire rope.

[0035] The soil matrix 17 may include soil, seeds, fertilizers, water retaining agents, organic matter and stabilizers, and each component should be evenly mixed. The seeds should be selected from plant seeds suitable for local growth.

[0036] The construction method of the slope ecological protection system includes the following steps: A. Anchoring anchor rods 11 on the slope 3, at least three anchor rods 11 form a group of anchor rods 11, and a vegetation bag space 4 is formed between the group of anchor rods; B. Connecting reinforcement ropes 14 to the anchor rods 11, the reinforcement ropes 14 correspond to the vegetation bag spaces 4 one by one and surround the corresponding vegetation bag spaces 4; C. Laying vegetation bags 13 from top to bottom along the slope 3, a vegetation bag 13 is arranged in a vegetation bag space 4, the vegetation bag 13 is connected to the anchor rods 11, and a filling port 134 is arranged on the vegetation bag 13; D. Laying a metal flexible mesh 12 from top to bottom along the slope 3, the metal flexible mesh 12 covers the vegetation bag 13, and the metal flexible mesh 12 is connected to the reinforcement ropes 14; E. Filling the foreign soil matrix 17 into the vegetation bag 13 through the mesh holes of the metal flexible mesh 12 and the filling port 134.

[0037] The present application first lays and fixes the vegetation bag 13 and the metal flexible net 12, and then fills the foreign soil matrix 17. Compared with the cited patent of the background technology, the construction is simpler and more economical. Since there is no stacking of vegetation bags, there is no problem of vegetation bag collapse, and the construction and use are more reliable and more suitable for the terrain of high and steep rock slopes.

[0038] Before carrying out step A, loose soil and floating stones that threaten construction safety in the slope protection area should be cleared, and local terrain (local accumulations and protrusions, etc.) that are not conducive to construction and installation and affect the normal function of the system after installation should be appropriately trimmed. In step A, the anchor hole position can be determined by laying out and measuring. According to the terrain conditions, the hole spacing can be adjusted by 0.3m. Within the allowable adjustment range of the hole spacing, the anchor hole position should be selected in a natural depression as much as possible. Drill the anchor hole according to the designed depth and clean the hole. The hole diameter should not be less than Under the premise of ensuring that the angle between the anchor rod 11 and the horizontal plane is not less than 15°, it should be as vertical as possible to the slope 3. After the anchor rod hole is drilled, grout and insert the anchor rod 11. Cement mortar or cement slurry with a strength grade not less than M20 should be used to ensure that the slurry is full, and the grouting body should be cured for at least three days before the next process.

[0039] In step B, existing rope clamps can be used to fix the reinforcing rope 14. In step C, if necessary, a temporary short anchor rod can be added to fix the vegetation bag 13. In step E, when the soil matrix 17 is filled, the metal flexible net 12 can be pulled up to prevent the metal flexible net 12 from pressing the vegetation bag 13 and affecting the filling, and a funnel can be used for filling. After filling, the metal flexible net 12 rebounds to play a role in pressing the vegetation bag 13.

Claims

1. The construction method of the high and steep rock slope ecological protection system is characterized by: The high and steep rock slope ecological protection system comprises a plurality of protection bodies (1), wherein the protection bodies (1) comprise vegetation bags (13), reinforcement ropes (14), a metal flexible net (12) and four anchor rods (11), wherein the anchor rods (11) are anchored on the slope (3), a rectangular vegetation bag space (4) is formed between the four anchor rods (11), a vegetation bag (13) is arranged in each vegetation bag space (4), the reinforcement ropes (14) are connected to the anchor rods (11) and surround the vegetation bag space (4), and the metal flexible net (12) is deployed and arranged with the reinforcement ropes (14), the vegetation bag (13) is located in the vegetation bag space (4) and between the slope (3) and the metal flexible net (12), the vegetation bag (13) is provided with a filling port (134), the vegetation bag (13) is filled with a foreign soil matrix (17), the vegetation bag (13) is connected to the anchor rod (11), and the metal flexible net (12) presses the vegetation bag (13); the protective bodies (1) are closely arranged to form an ecological protection system covering the slope (3); the vegetation bag (13) is rectangular in shape, and is made of non-woven fabric. The vegetation bag (13) is provided with a transverse connection part (132) and a longitudinal connection part (133), the transverse connection part (132) and the longitudinal connection part (133) divide the vegetation bag (13) into a plurality of vegetation bag monomers (131), and each vegetation bag monomer (131) is provided with a filling port (134); adjacent protective bodies (1) share an anchor rod (11), and the metal flexible nets (12) of the plurality of adjacent protective bodies (1) are made into one piece; the transverse spacing of the anchor rods (11) is 3 to 4 meters, and the longitudinal spacing is 1 to 2 meters; the spacing between the four sides of the vegetation bag (13) and the reinforcement rope (14) is 0.2 to 0.3 meters, and the construction method comprises the following steps: A. Anchoring anchor rods (11) on the slope (3), wherein four anchor rods (11) form a group of anchor rods (11), and a vegetation bag space (4) is formed between the group of anchor rods; B. Connecting a reinforcement rope (14) to the anchor rod (11), wherein the reinforcement rope (14) corresponds to each of the vegetation bag spaces (4) and surrounds the corresponding vegetation bag spaces (4); C. laying vegetation bags (13) from top to bottom along the slope (3), wherein a vegetation bag (13) is arranged in a vegetation bag space (4), the vegetation bag (13) is connected to the anchor rod (11), and a filling port (134) is arranged on the vegetation bag (13); D. Laying a metal flexible net (12) from top to bottom along the slope (3), the metal flexible net (12) covering the vegetation bag (13), and the metal flexible net (12) being connected to a reinforcement rope (14); E. Filling the soil matrix (17) into the vegetation bag (13) through the mesh of the metal flexible net (12) and the filling port (134) of the vegetation bag (13).

2. The construction method of the high and steep rock slope ecological protection system according to claim 1 is characterized by: A pull ring (15) is provided at the end of the anchor rod (11), the reinforcement rope (14) passes through the pull ring (15), and the edge of the vegetation bag (13) is connected to the pull ring (15) via a connecting ring (16).

3. The construction method of the high and steep rock slope ecological protection system according to claim 1 is characterized by: The soil matrix (17) includes soil, seeds, fertilizer, water retaining agent, organic matter and stabilizer.

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