Method for evaluating stability of geocell grid structure

Abstract

According to the stability evaluation method of the geocell grid structure provided by the invention, the grid structure is provided with the reinforced net in each geocell unit, and the reinforced net is connected with the peripheral wall of the geocell unit, so that the reinforced net forms relatively strong traction and constraint capabilities on the peripheral wall of the geocell net after being unfolded and used; meanwhile, the reinforced net also has the restraining capacity on the filler in the geocell units and serves as a fixing structure for growing plant roots, the plant fixing force is improved, and the stability evaluation coefficient of the geocell net is further calculated by comprehensively considering contribution data of all related parameters of the reinforced net, so that the stability evaluation accuracy of the geocell net is improved. According to the relation between the stability evaluation coefficient of the geocell network and the overall stability of the grid structure, a mapping function is established to calculate the overall stability M of the geocell network, and then the technical effects of the anti-scouring capacity, the overall strength and the service life of the geocell network are fully guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of ecological slope protection, and in particular to a stability assessment method for a geocell grid structure. Background Art

[0002] Existing flexible ecological slope protection is mainly made of polymer materials extruded into sheets, with three-dimensional patterns pressed on the surface, holes punched, and connected by ultrasonic welding, plugging, riveting, injection molding, etc. to form a foldable three-dimensional geocell net with diamond or nearly hexagonal cells. The geocell net is laid flat on the slope and fixed in place with anchors, and the cell units are filled with soil and grass seeds are sown.

[0003] like Figure 1 As shown, each cell unit 10 of the geocell net 1 in the prior art is a hollow structure. When applied to a relatively large or steep slope, the filling material in the cell unit is limited by the surrounding wall, and the internal part is relatively loose and has poor restraint, which makes it easy to be eroded or slipped by water flow. At the same time, it will also have a certain impact on the fixation of plants growing in the cell unit. The combination of the geocell net, the cell filling material, and the plants in the cell unit is not strong, resulting in a technical problem that the overall service life and slope protection function cannot be effectively guaranteed. Especially when the cell filling material is clay, it is easy to crack and deform under the action of external force, which greatly affects the slope protection ability of the geocell net.

[0004] Therefore, for researchers in this field, there is an urgent need to develop a geocell grid structure and a stability assessment method that can improve grid strength and strengthen the fixation constraint capacity of cell fillers and plant roots. Summary of the invention

[0005] In view of this, in order to solve the above-mentioned problems, an embodiment of the present invention provides a geocell grid structure and a stability assessment method thereof, wherein a reinforced mesh is arranged in each cell unit of the geocell grid structure, and the reinforced mesh is connected to the peripheral wall of the cell unit. After being deployed and used, it forms a strong pulling and restraining ability on the peripheral wall of the geocell grid. At the same time, the reinforced mesh also has a restraining ability on the filling material in the cell unit, and can be used as a fixing structure for the roots of growing plants to improve the fixing force of plants. Further, the stability assessment coefficient of the geocell grid is calculated based on a comprehensive consideration of the contribution data of various relevant parameters of the reinforced mesh. According to the relationship between the stability assessment coefficient of the geocell grid and the overall stability of the grid structure, a mapping function is established to calculate the overall stability of the geocell grid. M The stability assessment method can fully avoid the above-mentioned series of technical problems existing in the geocell network in the prior art.

[0006] To achieve the above object, an embodiment of the present invention provides a method for evaluating the stability of a geocell grid structure, wherein the geocell grid structure includes a geocell net formed by a plurality of interconnected cell units, wherein a reinforcement net is provided in the cell unit, and the reinforcement net is connected to the peripheral wall of the cell unit; the overall structure of the geocell net is evaluated by using the reinforcement net, including: The stability evaluation coefficient S of the geocell network is calculated based on comprehensive consideration of various relevant parameter data of the reinforced mesh; each of the relevant parameter data includes: the arrangement density of the reinforced mesh, the pulling force of the reinforced mesh on the surrounding wall, the restraining force of the reinforced mesh on the filling material and the fixing force of the reinforced mesh on the plant root system; According to the stability evaluation coefficient of the geocell network S and overall stability M A mapping function is established to calculate the overall stability of the geocell network. M .

[0007] Furthermore, the stability assessment coefficient of the geocell net is S It is obtained by adding the contribution data of various relevant parameters of the reinforced mesh. The specific calculation formula is as follows: ; Among them, α, β, γ, and δ are weight coefficients, which respectively represent the influence of the reinforcement mesh arrangement density, the tension of the reinforcement mesh on the surrounding wall, the constraint of the reinforcement mesh on the filling material, and the fixation of the reinforcement mesh on the plant roots on the grid structure stability assessment, and α+β+γ+δ=1; D is the actual arrangement density of the reinforced mesh; D 0 It is the reference value or design standard value of the reinforcement mesh arrangement density; T It is the actual pulling force of the reinforcement mesh on the surrounding wall of the geocell mesh; T 0 It is the design value or limit value of the tension force of the reinforcement mesh on the surrounding wall of the geocell mesh; F It is the actual restraint force of the reinforcement mesh on the filling material in the cell unit; F 0 It is the design requirement value of the restraint force of the reinforcement mesh on the filling material in the cell unit; R The actual fixing force of the reinforcement mesh on the roots of growing plants; R 0 It is the expected value or ideal value of the fixing force of the reinforcement mesh on the root system of growing plants; Contribution data of the arrangement density parameters of the reinforcement mesh; The contribution data of the tension parameters of the reinforcement mesh to the surrounding wall; It is the contribution data of the reinforcement mesh to the constraint parameters of the filling material; Contribution data of the reinforcement mesh to the fixation parameters of plant roots.

[0008] Furthermore, the stability evaluation coefficient of the geocell network is S and overall stability M A mapping function is established to calculate the overall stability of the geocell network. M， The specific mapping relationship is as follows: ; in S min and S max They are the values ​​of the stability assessment coefficient under the worst and best conditions, that is, the values ​​when the geocell is in a completely unstable and absolutely stable state.

[0009] Furthermore, the reinforced mesh includes at least one layer of interwoven mesh, and the interwoven mesh includes a plurality of reinforcing wires integrally connected to the peripheral wall of the cell unit.

[0010] Furthermore, the material of the reinforcement line is a flexible, high-strength, lightweight fiber material.

[0011] Furthermore, the projection shape of the interwoven holes formed by the plurality of the reinforcing wires is a triangle, a quadrilateral, a pentagon, a hexagon, an octagon, a circle, an ellipse or a trapezoid, or any combination of the above shapes.

[0012] Furthermore, the material of the geocell net is a flexible, high-strength, lightweight fiber material.

[0013] Furthermore, the peripheral wall of the cell unit includes an upper part, a middle part and a lower part, and each of the upper part, the middle part and the lower part is provided with a layer of the interwoven mesh.

[0014] Furthermore, when the geocell grid structure is applied under the working conditions of slope less than 35°, annual rainfall greater than 500 mm, and water flow velocity greater than 2 m / s, through holes are arranged in arrays on the upper, middle and lower parts of the peripheral wall of the cell unit.

[0015] Furthermore, when the geocell grid structure is applied in a slope greater than 45° and less than 90° and an annual rainfall less than 400 mm, the lower portion of the peripheral wall of the cell unit is non-porous, and through holes are arranged in an array on the middle and lower portions.

[0016] Furthermore, the interwoven meshes in any two adjacent cell units are staggered in the vertical direction, that is, the reinforcing meshes arranged in adjacent cell units are not on the same plane, which is beneficial to enhancing the overall strength of the geocell net.

[0017] As a preferred technical solution, the reinforcement mesh is connected to the peripheral wall of the cell unit by weaving, bonding, sewing, bundling, hot melting or injection molding, or any combination of the above connection methods.

[0018] Beneficial effects of the present invention: The present application sets a reinforcing mesh in each cell unit, and the reinforcing mesh is connected to the peripheral wall of the cell unit. After being deployed and used, it forms a strong pulling and restraining ability on the peripheral wall of the geocell mesh. At the same time, the reinforcing mesh also has a restraining ability on the filling material in the cell unit, and can be used as a fixing structure for the roots of growing plants to improve the fixing force of plants. Further, the stability evaluation coefficient of the geocell mesh is calculated based on the contribution data of various relevant parameters of the reinforcing mesh. According to the relationship between the stability evaluation coefficient of the geocell mesh and the overall stability of the grid structure, a mapping function is established to calculate the overall stability of the geocell mesh. M The stability assessment method can fully guarantee the technical effect of the overall strength and service life of the geocell grid structure.

[0019] In particular, when the geocell grid structure of the present application is applied to a slope protection scenario where the filler inside the cell is clay soil, the combination of the geocell mesh and the reinforced mesh connected therein can effectively improve the mechanical properties of the clay soil and prevent the plastic deformation of the clay soil. Specifically, during the application process, there is friction and bite force between the reinforced mesh and the clay soil. In the horizontal direction, the presence of the reinforced mesh increases the shear strength inside the soil. According to the Moore-Coulomb law, (where τ is shear strength, c is cohesion, σ is normal stress, and ψ is internal friction angle). The role of the reinforcement mesh is equivalent to improving the comprehensive shear resistance of the soil, thereby better restraining the deformation of the clay in the horizontal direction. At the same time, in the vertical direction, the combination of geocell mesh and reinforcement mesh can effectively disperse the upper load. When a vertical load acts on the surface of the clay, the load is transmitted to the deeper soil through the geocell wall and reinforcement mesh, reducing the vertical deformation of the local soil due to excessive pressure, and increasing the integrity of the soil and the stability of long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following drawings are used to provide a further understanding of the present application, constitute a part of the present application, and are only intended to provide an illustrative explanation and description of the present invention, and are not intended to limit the scope of the present invention. In the drawings: Figure 1 It is a schematic diagram of the state structure of the geocell net in the prior art applied to ecological slope protection; Figure 2 A schematic diagram of the top view of the cell unit of the geocell grid structure of an embodiment of the present application; Figure 3 A schematic diagram of the longitudinal structure of a cell unit of the geocell grid structure of an embodiment of the present application; Figure 4A schematic diagram of the longitudinal structure of a cell unit of a geocell grid structure according to another embodiment of the present application; Figure 5 This is a method for evaluating the stability of the overall structure of a geocell net using a reinforced mesh in an embodiment of the present application. DETAILED DESCRIPTION

[0021] Several embodiments of the present application will be disclosed below with diagrams to clearly and completely describe the technical solution of the present application, which constitute a part of the specification of the present application and are used to provide a further understanding of the present invention. The schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention.

[0022] The technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0023] The following contents are all examples of specific implementation processes provided for describing in detail the technical solutions to be protected by this application. However, this application may also be implemented in other ways different from the descriptions herein. Persons skilled in the art may, under the guidance of the concepts of this application, adopt different technical means to implement this application. Therefore, this application is not limited to the specific embodiments below.

[0024] The present invention provides a method for evaluating the stability of a geocell grid structure. A reinforcing net is arranged in each cell unit of the geocell net. The reinforcing net is connected to the peripheral wall of the cell unit. After being deployed and used, it forms a strong pulling and restraining ability on the peripheral wall of the geocell net. At the same time, the reinforcing net also has a restraining ability on the filling material in the cell unit, and can be used as a fixing structure for the roots of growing plants to improve the fixing force of plants. The stability evaluation coefficient of the geocell net is further calculated based on the contribution data of various relevant parameters of the reinforcing net. According to the relationship between the stability evaluation coefficient of the geocell net and the overall stability of the grid structure, a mapping function is established to calculate the overall stability of the geocell net. M The stability assessment method is used to fully guarantee the technical effect of the overall strength and service life of the geocell net.

[0025] See also Figure 2 , Figure 3As shown, an embodiment of the present application provides a geocell grid structure, which includes a geocell net 1 formed by a plurality of interconnected cell units 10, wherein a reinforcing net 2 is arranged in the cell unit 10, and the reinforcing net 2 is connected to the peripheral wall of the cell unit 10.

[0026] Combination Figure 3 As shown, the reinforcement mesh 2 in each cell unit 10 of the geocell grid structure of this embodiment takes a layer of interwoven mesh as an example. Of course, multiple layers of interwoven mesh can be arranged in each cell unit 10 according to actual conditions, such as 2 layers, 3 layers, 4 layers and more layers, and each layer of interwoven mesh can also be crossed obliquely, etc.; the layer of interwoven mesh in this embodiment is arranged in the middle position of the cell unit in the vertical direction, and the interwoven mesh is preferably not limited to including a plurality of reinforcement lines 21 integrally connected to the peripheral wall of the cell unit, that is, according to the actual processing and manufacturing conditions, each reinforcement line 21 connected to the peripheral wall of the cell unit can also be independent, but the processing and manufacturing is relatively complicated. Therefore, in order to improve the processing and manufacturing efficiency and the overall reinforcement of the honeycomb grid, it is preferred that the reinforcement line is an integral connecting line.

[0027] It is worth noting that the reinforcing mesh of the present application is arranged in the cell unit to improve the overall reinforcement of the honeycomb grid space. The cell unit refers to the connection point between the reinforcing mesh and the peripheral wall of the cell unit, which is set at a preset distance greater than zero from the top or bottom edge of the cell unit.

[0028] In order to better ensure the pulling stability of the peripheral wall of the cell unit and the reinforced mesh, a connecting structure is provided at the connection between the reinforced mesh 2 and the peripheral wall of the cell unit, and the connecting structure includes a thickening block and a threading barrel arranged on the cell unit, the threading barrel is arranged in the thickness direction of the peripheral wall of the cell unit, the thickening block is arranged on the peripheral wall surface of the cell unit and abuts against the threading barrel, the reinforcing wire passes through the threading barrel and is fixedly connected to the thickening block. Even under a large impact force, under a specific connecting structure, the connection between the reinforcing wire and the peripheral wall of the cell unit will not be worn, cracked or torn, thereby greatly improving the overall strength and stability of the geocell net.

[0029] See also Figure 5 The specific methods shown for evaluating the stability of the overall structure of the geocell using the reinforced mesh include: Calculation of the stability evaluation coefficient of the geocell network based on comprehensive consideration of various relevant parameter data of the reinforced network S ; The relevant parameter data include: the arrangement density of the reinforcement mesh, the pulling force of the reinforcement mesh on the surrounding wall, the restraint force of the reinforcement mesh on the filler and the fixation force of the reinforcement mesh on the plant roots; the stability assessment coefficient of the geocell mesh SIt is obtained by adding the contribution data of various relevant parameters of the reinforced mesh. The specific calculation formula is as follows:

[0030] Among them, α, β, γ, and δ are weight coefficients, which respectively represent the influence of the reinforcement mesh arrangement density, pulling force, restraint force, and fixation force on the stability assessment coefficient, and α+β+γ+δ=1. The specific value can be determined through experiments or engineering experience. D The actual arrangement density of the reinforcement mesh, such as the number or area of ​​reinforcement mesh per square meter; D 0 It is the reference value or design standard value of the reinforcement mesh arrangement density; T The actual pulling force of the reinforcement mesh on the perimeter wall of the geocell mesh can be obtained through mechanical testing; T 0 It is the design value or limit value of the tension force of the reinforcement mesh on the surrounding wall of the geocell mesh; F The actual restraint force of the reinforcement mesh on the filling material in the cell unit, for example, determined by methods such as lateral pressure testing of the filling material; F 0 It is the design requirement value of the restraint force of the reinforcement mesh on the filling material in the cell unit; R is the actual fixing force of the reinforcement mesh on the growing plant roots, which can be evaluated through simulation experiments or field observations of the interaction between the plant roots and the reinforcement mesh; R0 is the expected value or ideal value of the fixing force of the reinforcement mesh on the growing plant roots; Contribution data of the arrangement density parameters of the reinforcement mesh; The contribution data of the tension parameters of the reinforcement mesh to the surrounding wall; It is the contribution data of the reinforcement mesh to the constraint parameters of the filling material; Contribution data of the reinforcement mesh to the fixation parameters of plant roots.

[0031] According to the relationship between the stability evaluation coefficient S of the geocell network and the overall stability M, a mapping function is established to calculate the overall stability of the geocell network. M， The specific mapping relationship is as follows: ; in S min and S maxThey are the values ​​of the stability assessment coefficient under the worst and best conditions, that is, the values ​​when the geocell is in a completely unstable and absolutely stable state. These two values ​​can be determined through experiments or engineering experience, that is, according to the specific geocell materials, reinforced mesh characteristics, filling material type, plant species and engineering environment in actual applications, through a large number of experiments and data analysis, the weight coefficient α of the appropriate reinforced mesh arrangement density for stability assessment, the weight coefficient β of the tension of the reinforced mesh on the surrounding wall for stability assessment, the weight coefficient γ of the constraint force of the reinforced mesh on the filling material for stability assessment, and the weight coefficient δ of the fixation force of the reinforced mesh on the plant roots for stability assessment are determined to ensure the accuracy and reliability of the assessment results of the overall structure of the geocell.

[0032] It should be noted that the materials of the reinforcement wire and geocell net in this embodiment are flexible, high-strength and lightweight fiber materials, such as but not limited to basalt fiber, glass fiber, PET fiber, etc. The method of connecting the reinforcement net 2 to the peripheral wall of the cell unit 10 is preferably not limited to weaving, bonding, sewing, bundling, hot melting or injection molding, or any combination of the above connection methods.

[0033] like Figure 2 As shown, the projection shape of the interwoven holes formed by the multiple reinforcing wires 21 is a triangle, a quadrilateral, a pentagon, a hexagon, an octagon, a circle, an ellipse or a trapezoid, or any combination of the above shapes. The interwoven density and interwoven shape formed by the reinforcing wires can vary according to the actual situation of the construction scene and the different fillers.

[0034] As another example, Figure 4 As shown, the peripheral wall of the cell unit 10 of this embodiment includes an upper portion 10a, a middle portion 10b and a lower portion 10c, and the upper portion 10a, the middle portion 10b and the lower portion 10c are each provided with a layer of the interwoven mesh, namely an upper interwoven mesh 2a, a middle interwoven mesh 2b and a lower interwoven mesh 2c.

[0035] When the geocell grid structure is applied under the conditions of a slope less than 35°, an annual rainfall greater than 500 mm, and a water flow velocity greater than 2 m / s, the upper part 10a, the middle part 10b, and the lower part 10c of the peripheral wall of the cell unit are all provided with through holes in an array, and the interweaving density of the reinforcement net is relatively sparse, which can meet the overall stability of the geocell net.

[0036] When the geocell grid structure is applied in a slope greater than 45° and less than 90°, and the annual rainfall is less than 400 mm, the lower part 10c of the peripheral wall of the cell unit 10 is non-porous, and the middle part 10b and the upper part 10a are both provided with through holes in an array, and the interweaving density of the reinforcement net is relatively densely arranged, so as to fully meet the overall stability of the geocell net.

[0037] Furthermore, the interwoven meshes in any two adjacent cell units 10 are staggered in the vertical direction so that the mutual pulling forces are staggered, which is beneficial to enhancing the overall stability of the geocell net.

[0038] In summary, the present application sets a reinforced mesh in each cell unit, and the reinforced mesh is connected to the peripheral wall of the cell unit. After being deployed and used, it forms a strong pulling and restraining ability on the peripheral wall of the geocell mesh. At the same time, the reinforced mesh also has a restraining ability on the filling material in the cell unit, and can be used as a fixing structure for the roots of growing plants to improve the plant fixing force. The stability evaluation coefficient of the geocell mesh is further calculated based on the contribution data of various relevant parameters of the reinforced mesh. According to the relationship between the stability evaluation coefficient of the geocell mesh and the overall stability of the grid structure, a mapping function is established to calculate the overall stability of the geocell mesh. M The stability assessment method can fully guarantee the technical effect of the overall strength and service life of the geocell net.

[0039] In particular, when the geocell grid structure of the present application is applied to a slope protection scenario where the filler inside the cell is clay soil, the combination of the geocell mesh and the reinforced mesh connected therein can effectively improve the mechanical properties of the clay soil and prevent the plastic deformation of the clay soil. Specifically, there is friction and bite force between the reinforced mesh and the clay soil. In the horizontal direction, the presence of the reinforced mesh increases the shear strength inside the soil. According to the Moore-Coulomb law, (where τ is shear strength, c is cohesion, σ is normal stress, and ψ is internal friction angle). Although the internal friction angle of clay is relatively small, the role of the reinforcement mesh is equivalent to improving the comprehensive shear resistance of the soil, thereby better restraining the deformation of the clay in the horizontal direction. At the same time, in the vertical direction, the combination of geocell mesh and reinforcement mesh can effectively disperse the upper load. When a vertical load acts on the surface of the clay, the load is transmitted to the deeper soil through the geocell wall and reinforcement mesh, reducing the vertical deformation of the local soil due to excessive pressure, and increasing the integrity of the soil and the stability of long-term use.

[0040] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0041] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for evaluating the stability of a geocell grid structure, characterized in that: The geocell grid structure comprises a geocell net formed by a plurality of interconnected cell units, wherein a reinforcement net is arranged in the cell unit, and the reinforcement net is connected to the peripheral wall of the cell unit; The reinforcement mesh is used to evaluate the stability of the overall structure of the geocell. The stability evaluation method includes: The stability evaluation coefficient S of the geocell network is calculated based on comprehensive consideration of various relevant parameter data of the reinforced mesh; each of the relevant parameter data includes: the arrangement density of the reinforced mesh, the pulling force of the reinforced mesh on the surrounding wall, the restraining force of the reinforced mesh on the filling material and the fixing force of the reinforced mesh on the plant root system; According to the stability evaluation coefficient of the geocell network S and overall stability M A mapping function is established to calculate the overall stability of the geocell network. M， The specific mapping relationship is as follows: ； in S min and S max They are the values ​​of the stability assessment coefficient under the worst and best conditions, that is, the values ​​when the geocell is in a completely unstable and absolutely stable state.

2. The method for evaluating the stability of a geocell grid structure according to claim 1, wherein: The stability assessment factor of the geocell net S It is obtained by adding the contribution data of various relevant parameters of the reinforced mesh. The specific calculation formula is as follows: ； Among them, α, β, γ, and δ are weight coefficients, which respectively represent the influence of the reinforcement mesh arrangement density, the tension of the reinforcement mesh on the surrounding wall, the constraint of the reinforcement mesh on the filling material, and the fixation of the reinforcement mesh on the plant roots on the grid structure stability assessment, and α+β+γ+δ=1; D is the actual arrangement density of the reinforced mesh; D 0 It is the reference value or design standard value of the reinforcement mesh arrangement density; T It is the actual pulling force of the reinforcement mesh on the surrounding wall of the geocell mesh; T 0 It is the design value or limit value of the tension force of the reinforcement mesh on the surrounding wall of the geocell mesh; F It is the actual restraint force of the reinforcement mesh on the filling material in the cell unit; F 0 It is the design requirement value of the restraint force of the reinforcement mesh on the filling material in the cell unit; R The actual fixing force of the reinforcement mesh on the roots of growing plants; R 0 It is the expected value or ideal value of the fixing force of the reinforcement mesh on the root system of growing plants; Contribution data of the arrangement density parameters of the reinforcement mesh; The contribution data of the tension parameters of the reinforcement mesh to the surrounding wall; It is the contribution data of the reinforcement mesh to the constraint parameters of the filling material; Contribution data of the reinforcement mesh to the fixation parameters of plant roots.

3. The method for evaluating the stability of a geocell grid structure according to claim 1, characterized in that: The reinforcing mesh includes at least one layer of interwoven mesh body, and the interwoven mesh body includes a plurality of reinforcing wires integrally connected to the peripheral wall of the cell unit.

4. The method for evaluating the stability of a geocell grid structure according to claim 3, characterized in that: The material of the reinforcement wire is a flexible high-strength lightweight fiber material; the material of the geocell net is a flexible high-strength lightweight fiber material.

5. The method for evaluating the stability of a geocell grid structure according to claim 3, characterized in that: The projection shape of the interwoven holes formed by the plurality of reinforcing wires is a triangle, a quadrilateral, a pentagon, a hexagon, an octagon, a circle, an ellipse or a trapezoid, or any combination of the above shapes.

6. The method for evaluating the stability of a geocell grid structure according to claim 3, characterized in that: The peripheral wall of the cell unit comprises an upper part, a middle part and a lower part, and each of the upper part, the middle part and the lower part is provided with a layer of the interwoven mesh body.

7. The method for evaluating the stability of a geocell grid structure according to claim 6, characterized in that: When the geocell grid structure having a reinforcing mesh arranged in each cell unit is applied under the working conditions of a slope less than 35°, an annual rainfall greater than 500 mm, and a water flow rate greater than 2 m / s, through holes are arranged in an array on the upper, middle and lower parts of the peripheral wall of each cell unit.

8. The method for evaluating the stability of a geocell grid structure according to claim 6, characterized in that: When the geocell grid structure with a reinforcing mesh arranged in each cell unit is applied to a slope greater than 45° and less than 90° and an annual rainfall less than 400 mm, the lower part of the peripheral wall of the cell unit is non-porous, and through holes are arranged in an array on the middle and lower parts.

9. The method for evaluating the stability of a geocell grid structure according to claim 1, characterized in that: The reinforcement mesh is connected to the peripheral wall of the cell unit by weaving, bonding, sewing, bundling, hot melting or injection molding, or any combination of the above connection methods.

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