3D anti-invasion soil fixation mesh pad

Abstract

The utility model belongs to the technical field of ecological nursing, and relates to a 3D (three-dimensional) anti-invasion soil fixation mesh pad which comprises a soil fixation mesh pad main body (1) and a plurality of U-shaped anchoring nails (4), the soil fixation mesh pad main body (1) is of a bubble-shaped three-layer three-dimensional structure which continuously fluctuates and protrudes, the soil fixation mesh pad main body (1) is composed of a terylene warp knitting grid (2), a polymer covering surface (3) and a metal grid (5), and the terylene warp knitting grid (2) is connected with the U-shaped anchoring nails (4). The polymer covering surface (3) is arranged between the terylene warp knitting grid (2) and the metal grid (5), and the soil fixing mesh pad body (1) is anchored to the river channel nursing slope surface through the U-shaped anchoring nails (4). The anti-invasion soil fixation mesh pad has the anti-corrosion anti-invasion function and the soil fixation function.

Description

Technical Field

[0001] The utility model belongs to the technical field of ecological nursing, and relates to a 3D anti-invasion soil-fixing net mat. Background Art

[0002] In river protection projects with gentle longitudinal slopes, lack of block stone materials, and ecological greening requirements, as well as slope protection projects in soil and water conservation management, anti-invasion soil-fixing net mats are required. The patent number CN202320184220.9 proposes a three-dimensional reinforced soil-fixing net mat, which includes a metal net and a fiber layer. The fiber layer is arranged in the holes of the metal net, and also includes: long-edge reinforcing ribs symmetrically arranged on the two long edges of the metal net; short-edge reinforcing ribs symmetrically arranged on the two short edges of the metal net; fixing devices respectively hinged on the two short-edge reinforcing ribs, and the fixing devices have a number of first ground nail through holes. Through the above technical solution, the problems of insufficient strength, easy damage and easy detachment of ordinary soil-fixing net mats in the prior art are solved.

[0003] The disadvantages of the above disclosed soil-fixing net mat are: the grid elongation rate of the soil-fixing net mat is high, there is long-term creep, poor physical and chemical stability, and poor high and low temperature resistance. Therefore, we design a three-dimensional solid soil-fixing net mat structure. Content of the Utility Model

[0004] The purpose of the utility model is to solve the above problems and provide a 3D anti-invasion soil-fixing net mat.

[0005] To achieve the above purpose, the utility model provides a 3D anti-invasion fixing net mat, which includes a soil-fixing net mat main body and a plurality of U-shaped anchor nails. The soil-fixing net mat main body is a three-layer three-dimensional structure with continuous undulating protrusions in a bubble shape. The soil-fixing net mat main body is composed of a polyester warp-knitted grid, a polymer covering layer and a metal grid. The polymer covering layer is arranged between the polyester warp-knitted grid and the metal grid. The plurality of U-shaped anchor nails anchor the soil-fixing net mat main body to the river care slope.

[0006] Further, the metal grid is a porous machine-woven mesh structure mechanically hinged and woven by low-carbon zinc-aluminum alloy steel wires and aluminum-zinc mixed rare earth alloy-coated steel wires. The purpose of this setting is to ensure that the metal grid has mechanical properties such as corrosion resistance, wear resistance and high strength.

[0007] Further, the polyester warp-knitted grid is a polyester warp-knitted grid structure formed by combining tensile strip units into a regular grid pattern. The purpose of this setting is to make the polyester warp-knitted grid have good longitudinal and transverse tensile effects and improve the service life.

[0008] Further, the polymer covering layer is a nano-level PET flame-retardant structure. The purpose of this setting is to have good flame-retardant performance and anti-UV performance.

[0009] Furthermore, multiple U-shaped anchor nails adopt a steel nail structure with a diameter exceeding 8 mm. The purpose of this setting is to facilitate better anchoring of the main body of the soil-fixing mesh mat and prevent the main body of the soil-fixing mesh mat from falling off or slipping.

[0010] Furthermore, the height by which the polymer covering surface protrudes from the polyester warp-knitted grid is greater than or equal to one centimeter. The purpose of this setting is to ensure a good covering effect and facilitate planting.

[0011] The beneficial effects of the present utility model are as follows:

[0012] The main body of the soil-fixing mesh mat composed of a polyester warp-knitted grid, a polymer covering surface, and a metal grid has a low elongation rate, high strength, no long-term creep, good physical and chemical stability, corrosion resistance, resistance to high and low temperatures, the overall tensile strength is improved, and the service life is extended; by providing an organic filter disc and a water-absorbing cotton column belt, it helps to absorb rainwater and reach the soil layer through the organic filter disc, which can increase the organic matter in the soil layer and facilitate the planting and growth of vegetation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematically showing a three-dimensional sectional view of a 3D anti-invasion soil-fixing structure according to an embodiment of the present utility model;

[0014] Figure 2 Schematically showing a structural diagram of a polyester warp-knitted grid according to an embodiment of the present utility model;

[0015] Figure 3 Schematically showing a plan view of the 3D anti-invasion soil-fixing mesh mat anchoring and installation according to an embodiment of the present utility model.

[0016] The meanings represented by the reference numerals in the drawings are as follows:

[0017] 1. Main body of the soil-fixing mesh mat; 2. Polyester warp-knitted grid; 3. Polymer covering surface; 4. U-shaped anchor nail; 5. Metal grid; 6. Organic filter disc; 7. Water-absorbing cotton column belt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] The present utility model will be described in detail below in conjunction with the drawings and specific embodiments. The embodiments cannot be enumerated one by one here, but the embodiments of the present utility model are not limited to the following embodiments.

[0020] As Figure 1 , Figure 2 and Figure 3 shown, the present utility model provides a 3D anti-invasion soil-fixing net mat, which includes a soil-fixing net mat main body 1 and a plurality of U-shaped anchor nails 4. The soil-fixing net mat main body 1 is a three-layer three-dimensional structure with continuous undulating protrusions in a bubble shape. The soil-fixing net mat main body 1 is composed of a polyester warp knitted grille 2, a polymer covering layer 3 and a metal grid 5. The polymer covering layer 3 is arranged between the plastic grille 2 and the metal grid 5. The plurality of U-shaped anchor nails 4 anchor the soil-fixing net mat main body 1 to the slope of the river channel for nursing.

[0021] In this implementation scheme, the metal grid 5 is a porous machine-woven mesh structure formed by mechanically hinging and weaving low-carbon zinc-aluminum alloy steel wires and aluminum-zinc mixed rare earth alloy-coated steel wires; the polyester warp knitted grille 2 is a polyester warp knitted grille fiberglass geogrid structure in a regular grid pattern formed by combining tensile strip units; an organic filter disk 6 and a water-absorbing cotton column belt 7 can be arranged in the polyester warp knitted grille 2. The polymer covering layer 3 is a nano-level PET flame-retardant structure. The height by which the polymer covering layer 3 protrudes from the polyester warp knitted grille 2 exceeds one centimeter.

[0022] In this implementation scheme, the plurality of U-shaped anchor nails 4 adopt a steel nail structure with a diameter exceeding 8 mm.

[0023] As Figure 3 shown, the construction process of the soil-fixing net mat: Hard objects with sharp edges that may damage the net mat should be removed from the slope, pits and hollows should be filled, and the slope should be leveled; the top anchor trench is not less than 1 m away from the slope edge, the bottom anchor trench meets the scouring depth requirement, the groove width is not less than 0.8 m, and the depth is not less than 0.5 m. The compactness of the backfill soil in the trench is the same as that of the slope filling and should not be less than 0.91.

[0024] Laying of the soil-fixing net mat:

[0025] The net mat should be laid closely against the slope without gaps. The lap type and length should meet the design requirements; the laying direction should be along the slope, and the upstream of the flow direction between the widths should be pressed against the downstream for lap joint, and the lap width is not less than 0.15 m.

[0026] The soil-fixing net mat is fixed by using "U"-shaped steel nails for anchoring, and the anchoring spacing should meet the design requirements. (The soil-fixing net mat is anchored by hammering the U-shaped anchor nails into the soil. The anchor nails at the top anchor trench and the lap joints between the widths are spaced 1 m apart, and the anchor nails on the slope are spaced 1.5 m apart, arranged in a plum blossom shape. The wires of the soil-fixing net mat should not be damaged during hammering of the nails).

[0027] The upper and lower ends are preferably anchored by using a grid gabion for weighting, and the size and burial depth of the grid gabion should meet the design requirements.

[0028] After the soil-fixing net mat is laid and fixed, the soil covering preferably uses planting soil. Press the soil tightly into the net mat to fill it densely and form a composite layer of the net mat and the soil. The thickness should meet the design requirements; a 3-5 cm thick layer of planting soil is spread on the surface of the soil-fixing net mat. When planting on the planting soil, suitable local shrubs and herbaceous plants should be selected according to local climate, sunlight, soil type and other factors. The grass varieties should have well-developed roots, low stems, lush branches and leaves, strong growth ability, perennial growth, and be cold-resistant, drought-resistant, flood-resistant and barren-resistant. A mixture of cool-season and warm-season grasses can be sown.

[0029] The main body of the soil-fixing net mat can be used for ecological protection of artificial lakes, river channels, lakes and slopes to prevent soil erosion. The slope should be a safe and stable slope surface. The slope ratio of the slope should not be steeper than 1:

[0030] When used for river bank slope protection, the flow velocity should not be greater than 2.5 m / s; to meet the requirements of slope filtration and ecological greening, it can be used in combination with filament geotextiles, ecological blankets, etc.

[0031] According to the characteristics of the slope topography, soil quality and regional climate, the present utility model covers a layer of the main body of the soil-fixing net mat on the slope surface and plants a variety of plants in a certain combination and spacing. Through the growth activities of the plants, the purpose of root reinforcement and stem and leaf erosion prevention can be achieved. After ecological slope protection technology treatment, a dense vegetation cover can be formed on the slope surface, and a crisscross root system can be formed in the surface soil layer, effectively preventing the erosion of the slope by storm runoff, increasing the shear strength of the soil mass, reducing the pore water pressure and the self-weight of the soil mass, thereby greatly improving the stability and anti-scouring ability of the slope.

[0032] The indicators of the plastic grille and the polymer covering are as follows:

[0033]

[0034]

[0035] The indicators of the metal grid are as follows:

[0036]

[0037] The construction acceptance standards of the soil-fixing net mat are as follows:

[0038]

[0039] The above is only one embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A 3D anti-invasion soil-fixing net mat, comprising a soil-fixing net mat main body (1) and a plurality of U-shaped anchor nails (4), characterized in that, The soil-fixing net mat body (1) is a three-dimensional structure with continuous undulating protrusions in a bubble shape. The soil-fixing net mat body (1) is composed of a polyester warp knitted grid (2), a polymer covering surface (3), and a metal grid (5). The polymer covering surface (3) is arranged between the polyester warp knitted grid (2) and the metal grid (5). A plurality of U-shaped anchor nails (4) anchor the soil-fixing net mat body (1) to the river channel care slope surface.

2. The 3D soil-retaining and erosion-resistant geonet pad according to claim 1, characterized in that, The metal grid (5) is a porous machine-woven mesh structure formed by mechanically hinging and weaving low-carbon zinc-aluminum alloy steel wires and aluminum-zinc mixed rare-earth alloy-coated steel wires.

3. The 3D anti-invasion soil-fixing net mat according to claim 1, wherein, The polyester warp knitted grid (2) is a glass fiber geogrid structure with a regular grid pattern formed by combining tensile strip units.

4. The 3D anti-invasion soil-fixing mesh mat according to claim 1, characterized in that, The polymer covering surface (3) is a nano-level PET flame-retardant structure.

5. The 3D soil-retaining and erosion-resistant geonet pad according to claim 1, characterized in that, A plurality of the U-shaped anchor nails (4) adopt a steel nail structure with a diameter exceeding 8 mm.

6. The 3D anti-invasion soil-fixing mesh mat according to claim 1, wherein, The height by which the polymer covering surface (3) protrudes from the polyester warp knitted grid (2) is greater than or equal to one centimeter.

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