CN102071696A - Steep slope protective soft frame and construction method thereof - Google Patents

Abstract

A flexible lattice frame for steep slope protection. The first layer of flexible lattice frame is paved at the bottom of the steep slope, and the second layer of flexible lattice frame is paved 20-40 cm above the first layer of flexible lattice frame until the top of the slope. The first layer of flexible grid frame is composed of interconnected flexible grid frames fixed on the steep slope. The flexible grid frame is as follows: the back of the panel is provided with a frame, the bottom of the panel is fixed on the steep slope with connectors, and the outer ends of the left and right sides of the panel are fixed on the steep slope. There are lap joints for overlapping one panel with an adjacent panel, installation grooves for partitions are made in the two sides of the upper and lower frames on the back of the panel, the upper end of the partition is provided with a shaft sleeve, and the anchor set in the shaft sleeve The poles are fixed on the steep slope, and the back of the panel is filled with planting soil and planted with vegetation. The construction method includes the steps of tidying up the slope and laying a flexible lattice frame. The invention has the advantages of long service life, maintenance cost, optimized environment of steep slopes on both sides of the road, etc., and can be used for protection of steep slopes on both sides of railways, highways, mines, hydropower and other projects.

Description

Flexible lattice frame for steep slope protection and its construction method

technical field

The invention belongs to the technical field of ecological protection and management in civil engineering, and in particular relates to the ecological management of steep vegetation slopes.

Background technique

In the construction of railways, highways, hydropower and other projects, it is often necessary to excavate a large number of slopes. The excavated slopes are eroded and damaged by wind and rain, resulting in instability, collapse and other diseases, and the excavation of the slopes destroys the original vegetation. Overburden, resulting in a large number of secondary bare land and serious soil erosion, affecting the ecological balance. With the strengthening of human awareness of environmental protection, ecological protection has become a development trend. At present, the commonly used methods of slope greening include reinforced concrete frame method, vegetation roll bedding method, alien soil vegetation belt method, fiber greening method, ecological porous concrete greening method, thick-layer substrate spray greening method, etc. However, the common disadvantage of the alien soil vegetation belt method, fiber greening method and thick-layer substrate spray greening method is that the strength is very low and cannot play the role of slope protection, and the alien soil vegetation belt method can only be used for gentle slopes, while the fiber greening method The thick-layer substrate spray greening method has disadvantages such as poor water retention performance and drought tolerance. The ecological porous concrete greening method has relatively high strength and good protection effect, but there are also technical problems such as poor nutrient supply for plants and high cost.

Another method of slope greening adopts a flexible protective belt fixed on the slope, and the protective belt is filled with planting soil, and vegetation is planted in the planting soil to beautify the environment. Because the flexible protection belt is very long, the soil filled behind the flexible protection belt is relatively heavy, and the flexible protection belt will be crushed in a short time, and the service life is very short, which increases the maintenance cost of the road, and for roads above 60° For steep slopes, because the strength of the flexible protective belt is low, the length of the flexible protective belt is long, and the weight of the filling soil on the back of the flexible protective belt is heavy, this flexible protective belt is not suitable for use on steep slopes.

Most of the inland areas in my country basically belong to arid climate. Research and development of a new technology suitable for my country's national conditions, which not only has a certain strength and anti-rain erosion ability to protect the slope, but also adapts to plant growth for a long time to achieve the purpose of greening is engineering technology. The current technical problem that the person needs to solve.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned slope retaining wall and flexible protective belt, and provide a steep slope protection device that can prevent soil erosion, build a green slope, improve plant survival rate and coverage, and have low road maintenance costs. Flexible grid.

The technical solution adopted to solve the above problems is: pave the first layer of flexible grid frame at the bottom of the steep slope, pave the second layer of flexible grid frame at 20-40 cm above the first layer of flexible grid frame to the top of the slope, and fix the top layer of flexible grid frame on the on the sloped platform. The above-mentioned first layer of flexible grid frame is composed of interconnected flexible grid frames fixed on the steep slope. The flexible grid frame is as follows: the back of the panel is provided with a frame, the bottom of the panel is fixed on the steep slope with connectors, and the left and right sides of the panel are The outer end is provided with a lap joint that overlaps one panel with an adjacent panel, and the two sides of the upper and lower frames on the back of the panel are provided with installation grooves for partitions. The anchor rod is fixed on the steep slope, and the back of the panel is filled with planting soil and planted with vegetation.

The height of the partitions of the present invention is the same as that of the panels, and the shapes of the partitions are triangular partitions and right-angle partitions. The triangular partitions are arranged in the installation grooves at the outer ends of the backs of the outermost two panels, and the right-angle partitions are arranged on the remaining panels. In the installation groove on the back and in the installation groove at the inner end of the back of the outermost two panels.

The mounting groove of the present invention is an I-shaped groove or a dovetail groove.

The upper and lower ends of the outer side of the separator of the present invention are provided with I-shaped bumps or dovetail-shaped bumps that have the same shape as the installation groove.

The right-angle dividing plate of the present invention is composed of two mutually perpendicular straight frames connected as a whole.

The construction method of the flexible lattice frame for the above-mentioned steep slope protection is as follows:

1. Finish the slope

Level the slope and remove loose soil, pumice and dangerous stones on the surface of the slope.

2. Pave the flexible grid frame

Starting from the foot of the slope, lay the first layer of flexible grid frame along the horizontal direction, use fiber nails to penetrate into the installation holes in the lower part of the panel, fix the lower part of the panel to the bottom of the slope, and install the outer end of the right-angle partition into the back of the panel up and down In the installation groove on the frame, the anchor rod penetrates into the sleeve at the top of the partition and nails it into the slope to fix the panel and the partition on the slope. The adjacent panels are connected, and the outer ends of the two outermost panels are installed with triangular partitions and fixed on the slope with anchor rods, paving the first layer of flexible lattice frames, and the back of the first layer of flexible lattice frames is filled with planting soil and planted with vegetation . The second layer of flexible grid is paved on the upper surface of the first layer of flexible grid at 20-40 cm. The construction method of the second layer of flexible grid is exactly the same as that of the first layer of flexible grid. The back of the character frame is filled with soil and planted with vegetation. The upper surface of the second layer of flexible grid frame is 20-40cm, and the third layer of flexible grid frame is paved to the top of the slope. The top layer of vegetation board is fixed on the slope top platform to form a ladder-like platform structure, and the back of each layer of flexible grid frame is filled with planting soil. and plant vegetation.

3. Plant protection

The plants planted in the flexible grid paved on the steep slope are regularly sprayed with water and pesticides to protect the plants.

The present invention adopts interconnected flexible grid structure, and the panel of the flexible grid is provided with a frame and a partition, and each flexible grid is fixed on the steep slope, which greatly increases the strength of the flexible grid and fixes the flexible grid on the steep slope. The upper back is filled with soil, which will not crush the flexible grid, which greatly improves the service life of the flexible grid, reduces the maintenance cost of the road, optimizes the environment of steep slopes on both sides of the road, and overcomes the problems of reinforced concrete grids and flexible protective belts. Due to the shortcomings, the plant growth area of the protected steep slope reaches more than 90%, which can be used for the protection of steep slopes on both sides of railways, highways, mines, hydropower and other projects.

Description of drawings

Fig. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

FIG. 2 is a schematic structural diagram of the first layer of flexible lattice frame 2 in FIG. 1 .

FIG. 3 is a top view of FIG. 2 .

FIG. 4 is a schematic structural view of the right-angled partition 2-5 in FIG. 2 .

Fig. 5 is a schematic structural diagram of the triangular partition 2-5 in Fig. 2 .

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to these embodiments.

Example 1

In Figures 1 to 5, the flexible grid frame for steep slope protection in this embodiment consists of the first layer of flexible grid frame 2 fixed on the steep slope 3, and the second layer above the first layer of flexible grid frame 2 fixed on the steep slope 3 The flexible lattice frame 1 is fixed on the slope top platform until the top floor flexible lattice frame 1 of the slope top platform, constitutes a ladder-shaped structure.

The flexible grid frame 2 of the first layer is made of the same flexible grid frame connected to each other. The flexible grid frame is composed of a panel 2-1, a shaft sleeve 2-2, a connecting ear 2-3, an anchor rod 2-4, and a dividing plate 2-5. The panel 2-1 of this embodiment is made of polyvinyl chloride by one-time molding, and the four sides of the back side of the panel 2-1 are casted with a frame, which plays a strengthening role and improves the service life of the present invention. The bottom of the panel 2-1 is once A connection hole a is formed by pouring. When the panel 2-1 is fixed on the ground of the steep slope 3, the bottom of the panel 2-1 is fixed on the slope 3 by using brazing nails to penetrate the connection hole a, and the outer sides of the panel 2-1 are The upper and lower sides of the upper and lower moldings have connecting ears 2-3 connected with the panel 2-1 as a whole. The connecting ears 2-3 are used to connect a panel 2-1 with an adjacent panel 2-1 with a pin shaft, and the panel 2-1 The two outer ends of the upper and lower sides of the back side frame are formed with a mounting groove b connected with the panel 2-1 at one time. The mounting groove b of the present embodiment is a dovetail groove, and the mounting groove b can also be made into an I-shaped groove. A partition plate 2-5 is installed in the installation groove on the upper and lower side frames of the back side of the panel 2-1, and the partition plate 2-5 is made by one-time casting of polyvinyl chloride, and the height of the partition plate 2-5 is the same as that of the panel 2-5. 1 has the same height, and there are two kinds of partitions 2-5, one is a right-angle partition 2-5, the other is a triangular partition 2-5, and the right-angle partition 2-5 is connected by two mutually perpendicular straight frames. Form a right angle as a whole, the triangular partition 2-5 is a right triangle, the shape of the upper and lower ends of the outer end of the partition 2-5 is exactly the same as the shape of the mounting groove b on the back of the panel 2-1. The bumps are used to install the partition plate 2-5 on the left and right ends of the back of the panel 2-1, and the partition plate 2-5 is installed on the back of the panel 2-1, which increases the strength and stability of the panel 2-1, and the partition plate 2-1 The upper end of the 5 is formed by one-time casting of polyvinyl chloride with an axle sleeve 2-2 connected with the dividing plate 2-5, and the anchor rod 2-4 penetrates in the axle sleeve 2-2 and is fixed on the steep slope 3, and the outermost two The outer end of the block panel 2-1 is installed with a triangular partition 2-5 and fixed on the slope 3 with an anchor rod 2-4, and the two ends of the remaining panels 2-1 are installed with a right-angle partition 2-5 and fixed on a steep slope with an anchor rod 2-4 3 constitute the first layer of flexible lattice frame. The back of the panel 2-1 is filled with planting soil, which can be used for planting flowers and grass, playing the role of protection, greening the slope, and beautifying the environment. Because the present invention adopts the interconnected flexible grid structure, the panel 2-1 of the flexible grid is provided with a frame and a partition 2-5, and each flexible grid is fixed on the steep slope 3, which greatly increases the strength of the flexible grid , the flexible grid frame is fixed on the steep slope 3 and the back is filled with soil, so that the flexible grid frame will not be crushed, greatly improving the service life of the flexible grid frame, reducing road maintenance costs, and optimizing the environment on both sides of the steep slope of the road.

The second layer of flexible grid is paved above the first layer of flexible grid 2. The distance between the lower surface of the second layer of flexible grid and the upper surface of the first layer of flexible grid is 20-40cm. The specific distance between the lower surface and the upper surface of the flexible lattice frame 2 of the first layer should be specifically determined according to the slope of the steep slope 3 and the height of the steep slope 3 . The parts and the connection relationship of the parts for paving the second layer of flexible grid are exactly the same as the first layer of flexible grid, and the back of the second layer of flexible grid panel 2-1 is filled with planting soil and planted with vegetation. The third layer of flexible grid is paved on the top of the second layer of flexible grid until the top of the slope, and the top layer of flexible grid 1 is fixed on the slope top platform to form a ladder-like platform structure. The panels 2 of each layer of flexible grid -1 The back is filled with planting soil and planted with vegetation.

The construction method of the above-mentioned flexible lattice frame for steep slope protection is as follows:

1. Finish the slope

Level the slope and remove loose soil, pumice and dangerous stones on the surface of the slope.

2. Pave the flexible grid frame

Starting from the foot of the slope, lay the first layer of flexible grid frame 2 along the horizontal direction, use fiber nails to penetrate into the installation hole a of the lower part of the panel 2-1, and fix the lower part of the panel 2-1 to the bottom of the slope 3, The outer end of the plate 2-5 is loaded into the installation groove b on the upper and lower frames of the back of the panel 2-1, and the anchor rod 2-4 is penetrated into the shaft sleeve 2-2 at the upper end of the dividing plate 2-5 and nailed into the slope 3 to secure the panel 2-1 and the partition plate 2-5 are fixed on the slope 3, and a pin shaft penetrates into the connecting ears 2-3 at both ends of the adjacent panel 2-1 to connect one panel 2-1 with the adjacent panel 2-1, The outer ends of the two outermost panels 2-1 are installed with triangular partitions 2-5 fixed on the slope 3 with anchor rods 2-4, paved into the first layer of flexible grid frame 2, the back of the first layer of flexible grid frame 2 Fill with planting soil and plant vegetation. The upper surface of the first layer of flexible grid 2 is 20 to 40 cm and the second layer of flexible grid is paved. The construction method of the second layer of flexible grid is exactly the same as that of the first layer of flexible grid 2. The back of the flexible grid frame is filled with soil and planted with vegetation. The upper surface of the second layer of flexible grid frame is 20-40cm and the third layer of flexible grid frame is paved to the top of the slope. The top layer of flexible grid frame 1 is fixed on the slope top platform to form a ladder-like platform structure. Fill with planting soil and plant vegetation.

3. Plant protection

The plants planted in the flexible grid paved on the steep slope are regularly sprayed with water and pesticides to protect the plants.

Claims (6)

1. the flexible gridiron of abrupt slope protection, the flexible gridiron (2) of (3) bottom making first floor on the abrupt slope, making second layer flexible gridiron in 20～40cm place, the flexible gridiron of first floor (2) top pushes up until the slope, the flexible gridiron of top layer (1) is fixed on the sloping roof panel, it is characterized in that the flexible gridiron of described first floor (2) upward constitutes for the flexible gridiron that is coupled to each other is fixed on abrupt slope (3), this flexibility gridiron is: the back side of panel (2-1) is provided with frame, the bottom of panel (2-1) is fixed on the abrupt slope (3) with connector, the outer end, the left and right sides of panel (2-1) is provided with the bridge piece of a panel (2-1) with an adjacent panel (2-1) overlap joint, in making, the both sides of panel (2-1) back side upper and lower side frame are provided with the mounting groove (b) of dividing plate (2-5), the upper end of dividing plate (2-5) is provided with axle sleeve (2-2), the anchor pole (2-4) that is arranged in the axle sleeve (2-2) is fixed on the abrupt slope (3), and the back of panel (2-1) is filled with plants soil and plant vegetation.

2. according to the flexible gridiron of the described abrupt slope of claim 1 protection, it is characterized in that: (height of 2-5 is identical with the height of panel (2-1) for described dividing plate, dividing plate (2-5) be shaped as triangle dividing plate (2-5) and right angle dividing plate (2-5), triangle dividing plate (2-5) is arranged in the mounting groove (b) of two panels of outermost (2-1) outer end, the back side, and right angle dividing plate (2-5) is arranged in the mounting groove (b) at remaining panel (2-1) back side and in the mounting groove (b) of two panels of outermost (2-1) the inner, the back side.

3. according to the flexible gridiron of claim 1 described abrupt slope protection, it is characterized in that: described mounting groove (b) is I-shaped groove or swallow tail shaped slot.

4. according to the flexible gridiron of claim 2 described abrupt slope protection, it is characterized in that: (two ends up and down in the 2-5 outside are provided with I-shaped projection or the swallow-tail form projection identical with the mounting groove shape to described dividing plate.

5. according to the flexible gridiron of claim 2 described abrupt slope protection, it is characterized in that: described right angle dividing plate (2-5) is connected as a single entity by two orthogonal straight edge frames and constitutes.

6. the job practices of the flexible gridiron of claim 1 a described abrupt slope protection is characterized in that it comprises the steps:

The A arrangement is domatic

Smooth domatic, remove the loose soil body in domatic top layer, float stone, danger stone;

The flexible gridiron of B making

From toe, along continuous straight runs is laid the flexible gridiron (2) of first floor, penetrate in the installing hole (a) of panel (2-1) bottom the be fixedly connected bottom of on the slope (3), bottom with panel (2-1) with fibre nail, packed in the mounting groove (b) on the upper and lower side frame of panel (2-1) back side in the outer end of right angle dividing plate (2-5), anchor pole (2-4) penetrates and hammers into slope (3) in the axle sleeve (2-2) of dividing plate (2-5) upper end and go up panel (2-1) and dividing plate (2-5) are fixed on the slope (3), penetrate in the connection ear (2-3) at adjacent panels (2-1) two ends with bearing pin a panel (2-1) is connected with an adjacent panel (2-1), the outer end of two panels of outermost (2-1) is installed triangle dividing plate (2-5) and is fixed on the slope (3) with anchor pole (2-4), making becomes the flexible gridiron (2) of first floor, and the back of the flexible gridiron of first floor (2) is filled with plants soil and plant vegetation.The flexible gridiron of upper surface 20～40cm making second layer of the flexible gridiron of first floor (2), the job practices of the flexible gridiron of the second layer and the job practices of the flexible gridiron of making first floor (2) are identical, fill soil and plant vegetation at the flexible gridiron of second layer back.The 3rd layer of flexible gridiron of the flexible gridiron upper surface 20～40cm making of the second layer pushes up until the slope, and the flexible gridiron of top layer (1) is fixed on the sloping roof panel, constitutes the terraced platform structure, fills at the flexible gridiron of each layer back and plants soil and plant vegetation.

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