Green assembly type flexible surface layer soil nail supporting structure capable of rapidly and directionally draining water

Abstract

The utility model belongs to the technical field of geotechnical engineering, and discloses a green assembly type flexible surface layer soil nail supporting structure capable of rapidly and directionally draining, which comprises an anchor rod anchoring component and an assembly component which are arranged on a side slope, the assembly component is respectively arranged on the slope top, the slope surface and the slope bottom of the side slope, and the anchor rod anchoring component is used for fixing the assembly component on the side slope. The assembly component sequentially comprises a surface layer material, a geotechnical composite layer material layer, a first silking layer, an impermeable film, water guide ribs and a second silking layer from outside to inside, the water guide ribs are of a plurality of cylindrical structures, and a drainage channel is formed among the water guide ribs, the impermeable film and the second silking layer; according to the scheme, the water guide ribs are designed to be of a plurality of cylindrical structures, a drainage channel is formed among the water guide ribs, the waterproof film and the second silk-made layer, so that water flows in the drainage channel, and the drainage effect is improved; the environment-friendly assembly supporting structure solves the problem that an existing environment-friendly assembly supporting structure is poor in drainage effect.

Description

TECHNICAL FIELD

[0001] The present scheme belongs to the technical field of geotechnical engineering, and particularly relates to a green assembled flexible surface layer soil nailing support structure capable of quickly directional drainage. BACKGROUND

[0002] Soil nailing support is an important support form and is widely applied in fields such as urban rail transit, underground comprehensive pipe gallery, underground municipal pipeline, industrial and civil building, etc. Shotcrete surface layer and soil nailing are important components of traditional soil nailing support. Dust caused by shotcrete during construction is 5 to 60 times of the standard, which causes environmental pollution and a long construction period.

[0003] Referring to the existing publication (announcement) No. CN218437132U, a degradable green assembled slope support structure, comprising a slope and a green assembled surface layer, the green assembled surface layer is laid on the slope, the green assembled surface layer is provided with a degradable reinforced layer, a degradable protection layer, a degradable drainage layer and a degradable skin layer from top to bottom, the top end, the bottom end and the middle part of the green assembled surface layer are provided with a plurality of ground insertion fixings, a plurality of structure insertion reinforcements are provided on the green assembled surface layer, the structure insertion reinforcements pass through the green assembled surface layer and are inserted into the soil of the slope, the ends of the structure insertion reinforcements protruding out of the green assembled surface layer are connected together by winding steel wire ropes, and the ends of the structure insertion reinforcements protruding out of the green assembled surface layer are provided with buckles pressed on the winding steel wire ropes.

[0004] For example, the above-mentioned support structure is provided with a degradable reinforced layer, a degradable protection layer, a degradable drainage layer and a degradable skin layer to realize self-degradation, green environmental protection and pollution prevention. However, the degradable drainage layer of the above-mentioned support structure is a layered structure, which is environmentally friendly, but has poor effects on water permeability and anti-clogging. At the same time, the contact area between the layers will reduce the gap due to the degradation or compaction of the material, further limiting the passage of water flow, resulting in poor drainage effect. CONTENT OF THE UTILITY MODEL

[0005] The purpose of the present scheme is to provide a green assembled flexible surface layer soil nailing support structure capable of quickly directional drainage, so as to solve the problem of poor drainage effect of the existing green assembled support structure.

[0006] In order to achieve the above-mentioned purpose, the present scheme provides a green assembled flexible surface layer soil nailing support structure capable of quickly directional drainage, comprising an anchor rod anchoring assembly provided on a slope and an assembled assembly, the assembled assembly is respectively provided on the top, surface and bottom of the slope, the anchor rod anchoring assembly is used for fixing the assembled assembly on the slope,

[0007] The assembly components include, from the outside to the inside, a surface material, a geosynthetic material layer, a first silk layer, a waterproof membrane, water-conducting ribs and a second silk layer. The water-conducting ribs are multiple cylindrical water-conducting ribs, and a drainage channel is formed between the water-conducting ribs and the waterproof membrane and the second silk layer.

[0008] The principle behind this solution is that, from the outside in, the assembly consists of a surface layer, a geosynthetic layer, a first silk layer, an impermeable membrane, water-conducting ribs, and a second silk layer. The water-conducting ribs are designed as multiple cylindrical structures, forming drainage channels between the impermeable membrane and the second silk layer. This allows water to flow through the drainage channel, rather than relying solely on the permeability of the layered structure, thereby improving drainage effectiveness. Furthermore, the impermeable membrane prevents rainwater from entering the soil.

[0009] The effects of this solution are: (1) The introduction of assembly components, taking advantage of the rapid water conduction and flexibility of the surface layer, enhances the self-stability of the soil in the soil nail support project, allows the soil to deform to a certain extent, releases some energy, and does not use mesh spraying to reduce the impact of dust, respects the environment, improves the economic and sustainable nature of the project, and improves the impact resistance and stability of the soil nail support project. (2) The water in the soil is quickly removed through the silk layer and water-conducting bars close to the soil. At the same time, there is an impermeable layer inside the surface layer to block the impact of rainfall and improve the self-stability of the soil. The geosynthetics layer provides sufficient tensile strength for the surface layer. (3) The assembly components have flexible characteristics, which can make the overall support structure have a certain elasticity, help to give full play to the soil's own properties, so that some energy is released, reduce the force on the support structure, and improve the impact resistance and stability of the soil nail support project. (4) The assembly components are prefabricated by the manufacturer, and the surface layer materials are cut according to the project design. The layered laying greatly shortens the construction period, which can reduce the construction cost of the soil nail support project and improve the economic and sustainable nature of the project. (5) Compared with traditional materials, it reduces the use of steel, realizes resource conservation, conforms to the concept of sustainable development, and reduces the impact on the natural environment.

[0010] Furthermore, the anchor rod anchoring assembly includes a top anchor rod arranged at the top of the slope, a surface anchor rod arranged on the slope surface, and a bottom anchor rod arranged on the horizontal plane of the bottom of the slope; the top anchor rod, the surface anchor rod and the bottom anchor rod are multiple anchor rods with the same structure, and one end of the anchor rod passes through the surface material and is fixed in the soil; it also includes a fixing part, which is used to fix and lock the anchor rod.

[0011] The principle and effect of the present scheme are to enhance the stability of the slope through the fixing effect of the anchor rod and the multi-level structure of the assembly component, and to realize rapid directional drainage. The anchor rod anchoring component includes slope top anchor rods, slope surface anchor rods and slope bottom anchor rods, which have the same structure and are fixed at one end in the soil and pass through the surface layer material at the other end. The fixing part is used to lock the anchor rod and ensure that the assembly component is firmly fixed on the slope.

[0012] Further, the fixing part includes a steel backing plate and a tightener and a steel wire rope, the steel backing plate is arranged above the surface layer material, the steel backing plate and the tightener are an integral structure, the steel backing plate and the tightener are used to lock and fix the anchor rod, the steel backing plate and the tightener are arranged on the outer wall of the anchor rod, the steel wire rope is arranged below the steel backing plate, and the steel wire rope is sequentially wound around the slope top anchor rods, the slope surface anchor rods and the slope bottom anchor rods.

[0013] The principle and effect of the present scheme are to press the surface layer material through the steel wire rope, so that the soil and the surface layer material are tightly attached, the connection of the steel backing plate and the tightener is used to tighten the steel wire rope, the soil pressure on the surface layer is ensured to be smoothly transmitted to the anchor rod, a complete stress system is formed to ensure the integrity of the structure, the overall rigidity of the structure is ensured, and the stability of the overall supporting structure under the load of the slope top is ensured.

[0014] Further, the top end of the slope top anchor rod, the slope surface anchor rod and the slope bottom anchor rod is 30 cm away from the soil surface.

[0015] The principle and effect of the present scheme are that the top end of the slope top anchor rod, the slope surface anchor rod and the slope bottom anchor rod is 30 cm away from the soil surface, which facilitates the disassembly or replacement of the anchor rod and the assembly component.

[0016] Further, it further includes a filling component arranged in the anchor rod, the filling component includes a filling chamber and a driving unit, the filling chamber is provided with a filling material, the outer wall of the filling chamber is a filling chamber made of flexible material, the bottom of the anchor rod is provided with a through hole, the anchor rod is provided with a piercing part for piercing the filling chamber, and the driving unit is used to extrude the filling chamber to pierce the filling chamber.

[0017] The principle and effect of this solution are as follows: Since the anchor rods are set in the soil, the soil itself has the characteristics of loose particles, high porosity, low cohesion, low natural strength and high compressibility, especially clay and fine uniform granular sand, which will creep and deform under the long-term shear force of the anchor rod. The greater the shear force, the worse the mechanical properties of the soil, and the greater the deformation. This creep will cause the prestress of the anchor rod to decrease. The greater the creep amount, the greater the prestress loss, which will cause the anchor rod to loosen, and then cause a gap between the anchor rod and the soil. In addition, if the installation process of the anchor rod is improper, such as insufficient grouting or the anchor rod is not placed correctly, it will also lead to insufficient anchoring force. Finally, environmental factors such as temperature changes, water infiltration, etc. may also cause the soil to expand or contract, further affecting the stability of the anchor rod. Therefore, it is necessary to fill the gap between the anchor rod and the soil to prevent the anchor rod from loosening.

[0018] Furthermore, the driving unit is a driving rod, and the driving rod is slidably arranged in the anchor rod.

[0019] The principle and effect of this solution are: this is the existing technology, by applying external force to one end of the driving rod, so that the free end of the driving rod presses against the filling chamber, causing the filling chamber to deform, and then the puncturing part punctures the filling chamber, so that the filling material inside it flows out from the through hole to fill the gap between the anchor rod and the soil.

[0020] Furthermore, the driving unit includes an extrusion plate, an airbag and a puncture needle. The extrusion plate is slidably arranged in the anchor rod, the airbag is arranged below the extrusion plate, the puncture needle is connected to a spring, the free end of the spring is fixedly connected to the inner wall of the anchor rod, and the puncture needle is used to puncture the airbag.

[0021] The principle and effect of this solution are: when there is a gap between the anchor rod and the soil, the anchor rod becomes loose, causing the spring to vibrate, thereby driving the puncture needle to move, and then the puncture needle punctures the airbag. When the extrusion plate loses the resistance of the airbag, the extrusion plate moves under the action of gravity, thereby squeezing the filling chamber, and then the puncture part punctures the filling chamber, causing the filling material inside to flow out from the through hole to fill the gap between the anchor rod and the soil.

[0022] Furthermore, the extrusion plate is connected to a tension spring, and the free end of the tension spring is fixedly connected to the inner wall of the anchor rod.

[0023] The principle and effect of this solution are as follows: in the initial state, the squeezing plate is resisted by the expansion of the airbag, causing the tension spring to be in a stretched state. When the needle punctures the airbag, the squeezing plate, driven by the tension spring, squeezes and fills the cavity, making the squeezing force of the squeezing plate stronger.

[0024] Furthermore, the number of the puncture needles is a plurality surrounding the airbag; a guide groove is provided in the anchor rod, and the puncture needle is slidably arranged in the guide groove.

[0025] The principle and effect of the scheme are that the plurality of stab needles can be shaken by the vibration generated by the loosening in different directions; and the guide groove provides positioning and guiding effect for the movement of the stab needles.

[0026] Further, the inner wall of the anchor rod is provided with a sliding groove, and the extrusion plate is in sliding connection with the sliding groove.

[0027] The principle and effect of the scheme are that the sliding groove provides positioning and guiding effect for the movement of the extrusion plate. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structural schematic view of the green assembly type flexible surface layer soil nailing support structure capable of quickly orienting drainage;

[0029] Figure 2 It is an exploded structural schematic view of the assembly component;

[0030] Figure 3 It is a structural schematic view of the anchor rod;

[0031] Figure 4 It is a working state schematic view of the soil nailing support;

[0032] Figure 5 It is a structural schematic view of the filling component Figure 1 ;

[0033] Figure 6 It is a structural schematic view of the filling component Figure 2 .

[0034] The names of corresponding marks in the drawings are: rigid cushion plate 1, tight trapping piece 2, slope top anchor rod 3, steel wire rope 4, assembly component 5, slope surface anchor rod 6, slope bottom anchor rod 7, geosynthetic material layer 8, first silk layer 9, water guide rib 10, impermeable membrane 11, second silk layer 12, filling component 13, sliding groove 130, filling cavity 131, through hole 132, piercing part 133, extrusion plate 134, air bag 135 and stab needle 136, spring 137, tension spring 138, guide groove 139. DETAILED DESCRIPTION

[0035] The concept and technical effects of the utility model will be described below in combination with embodiments, so as to fully understand the purpose, features and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, but not all the embodiments. Based on the embodiments of the utility model, other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the utility model:

[0036] Embodiment 1:

[0037] See also Figure 1 and Figure 2 A green assembled flexible surface soil nail support structure with rapid and directional drainage includes an anchor rod anchoring assembly and an assembly assembly 5 arranged on the slope. The assembly assembly 5 is respectively arranged on the top, surface and bottom of the slope. The anchor rod anchoring assembly is used to fix the assembly assembly on the slope. The assembly assembly 5 includes, from the outside to the inside, a surface material, a geocomposite material layer 8, a first silk layer 9, an impermeable membrane 10, a water-conducting rib 11 and a second silk layer 12. The water-conducting rib 11 is a plurality of cylindrical water-conducting ribs 11. A drainage corridor is formed between the water-conducting rib 11 and the impermeable membrane 10 and the second silk layer 12. The surface material, the geocomposite material layer 8, the first silk layer 9, the impermeable membrane 10, the water-conducting rib 11 and the second silk layer 12 are all made of degradable materials. The surface material, geosynthetic material layer 8, first silk layer 9, impermeable membrane 10, water-conducting ribs 11 and second silk layer 12 are arranged in the assembly component 5 from the outside to the inside. The water-conducting ribs 11 are designed as multiple cylindrical structures, forming a drainage channel between the impermeable membrane 10 and the second silk layer 12, so that water flows in the drainage channel instead of relying solely on the permeability of the layered structure, thereby improving the drainage effect. At the same time, the impermeable membrane 10 can prevent rainwater from entering the soil, and the first silk layer 9 can quickly drain rainwater out of the soil along the slope (see Figure 4 ).

[0038] See also Figure 1 and Figure 3, the anchor rod anchoring assembly comprises a slope top anchor rod 3 arranged on the slope top of the slope, a slope surface anchor rod 6 arranged on the slope surface of the slope, and a slope bottom anchor rod 7 arranged on the horizontal surface of the slope bottom; the slope top anchor rod 3, the slope surface anchor rod 6 and the slope bottom anchor rod 7 are a plurality of anchor rods with the same structure, one end of the slope top anchor rod 3, the slope surface anchor rod 6 and the slope bottom anchor rod 7 penetrates the surface layer material and is fixedly arranged in the soil body, and the other end of the slope top anchor rod 3, the slope surface anchor rod 6 and the slope bottom anchor rod 7 exposed outside the soil body is 30 cm away from the soil surface, so as to facilitate disassembly or replacement of the anchor rod and assembly 5; further comprising a fixing part, the fixing part comprises a steel backing plate 1 and a fastening part 2 and a steel wire rope 4, the steel backing plate 1 is arranged above the surface layer material, the steel backing plate 1 and the fastening part 2 are an integral structure, the steel backing plate 1 and the fastening part 2 are used for locking and fixing the slope top anchor rod 3, the slope surface anchor rod 6 and the slope bottom anchor rod 7, the steel backing plate 1 and the fastening part 2 are arranged on the outer wall of the slope top anchor rod 3, the slope surface anchor rod 6 and the slope bottom anchor rod 7, the steel wire rope 4 is arranged below the steel backing plate 1, and the steel wire rope 4 is sequentially wound around the plurality of slope top anchor rods 3, slope surface anchor rods 6 and slope bottom anchor rods 7. The stability of the slope is enhanced by the fixing effect of the slope top anchor rod 3, the slope surface anchor rod 6 and the slope bottom anchor rod 7 and the multi-level structure of the assembly 5, and rapid directional drainage is realized. The fixing part is used for locking the slope top anchor rod 3, the slope surface anchor rod 6 and the slope bottom anchor rod 7, so as to ensure that the assembly 5 is fixed firmly on the slope. Then the surface layer material is compressed by the steel wire rope 4, so that the soil body is closely attached to the surface layer material, the connection between the steel backing plate 1 and the fastening part 2 is used to fasten the steel wire rope 4, so as to ensure that the soil pressure on the surface layer can be smoothly transmitted to the slope top anchor rod 3, the slope surface anchor rod 6 and the slope bottom anchor rod 7, forming a complete stress system for ensuring the integrity of the structure, ensuring the overall rigidity of the structure, and ensuring the stability of the overall supporting structure under the load action of the slope top.

[0039] Example 2:

[0040] Please refer to Figure 5 and Figure 6 The difference between the present embodiment and the previous embodiment is that the structure of the anchor rod arranged in the soil body is improved to avoid the gap between the anchor rod and the soil body, so as to avoid loosening of the anchor rod.

[0041] A filling assembly 13 is provided in the anchor rod in the soil, and the filling assembly 13 includes a filling chamber 131 and a driving unit. A filling material is provided in the filling chamber 131, and the filling material can be made of any existing technology, such as cement slurry, fluidized solidified soil, etc. The outer wall of the filling chamber 131 is a filling chamber 131 made of a flexible material, a through hole 132 is provided at the bottom of the anchor rod, and a puncture portion 133 for puncturing the filling chamber 131 is provided in the anchor rod; the driving unit includes an extrusion plate 134, an air bag 135 and a puncture needle 136, and the inner wall of the anchor rod is provided with a slide groove 130, and the extrusion plate 134 is slidably connected to the slide groove 130. 0 is used to provide positioning and guiding effects for the up and down movement of the extrusion plate 134 to prevent it from dislocating and sliding; the extrusion plate 134 is connected to a tension spring 138, and the free end of the tension spring 138 is fixedly connected to the inner wall of the anchor rod. The airbag 135 is arranged below the extrusion plate 134. The number of the puncture needles 136 is a plurality surrounding the airbag 135. A guide groove 139 is provided in the anchor rod. The puncture needle 136 is slidably arranged in the guide groove 139 to provide positioning and guiding effects for the movement of the puncture needle 136. The puncture needle 136 is connected to a spring 137, and the free end of the spring 137 is fixedly connected to the inner wall of the anchor rod. The puncture needle 136 is used to puncture the airbag 135.

[0042] Specific working principle: When there is a gap between the anchor rod and the soil, the anchor rod becomes loose, causing the spring 137 to vibrate, thereby driving the puncture needle 136 to move, and then causing the puncture needle 136 to puncture the airbag 135. When the extrusion plate 134 loses the resistance of the airbag 135, the extrusion plate 134 squeezes the filling chamber 131 under the drive of the tension spring 138, so that the filling material inside it flows out from the through hole to fill the gap between the anchor rod and the soil.

[0043] The above is only an embodiment of the present invention, and the commonly known specific structures and characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, and these should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A green assembled flexible surface soil nailing support structure capable of rapid directional drainage, comprising an anchor rod anchoring assembly and an assembly assembly (5) arranged on a slope, wherein the assembly assembly (5) is respectively arranged on the top, the surface and the bottom of the slope, and the anchor rod anchoring assembly is used to fix the assembly assembly on the slope, characterized in that: The assembly component (5) comprises, from the outside to the inside, a surface layer material, a geosynthetic layer material layer (8), a first silk layer (9), a water-impermeable membrane (10), water-conducting ribs (11) and a second silk layer (12). The water-conducting ribs (11) are multiple cylindrical water-conducting ribs (11). A drainage channel is formed between the water-conducting ribs (11), the water-impermeable membrane (10) and the second silk layer (12).

2. The green assembled flexible surface soil nailing support structure capable of rapid directional drainage according to claim 1 is characterized by: The anchor rod anchoring assembly comprises a slope top anchor rod (3) arranged at the top of the slope, a slope surface anchor rod (6) arranged at the slope surface, and a slope bottom anchor rod (7) arranged on the horizontal surface of the slope bottom; the slope top anchor rod (3), the slope surface anchor rod (6), and the slope bottom anchor rod (7) are multiple anchor rods (3, 6, 7) with the same structure, one end of the anchor rod (3, 6, 7) passes through the surface material and is fixed in the soil; and further comprises a fixing piece, which is used to fix and lock the anchor rods (3, 6, 7).

3. The green assembled flexible surface soil nailing support structure capable of rapid directional drainage according to claim 2 is characterized by: The fixing part comprises a steel plate (1), a fastening part (2) and a steel wire rope (4); the steel plate (1) is arranged above the surface material; the steel plate (1) and the fastening part (2) are an integrally formed structure; the steel plate (1) and the fastening part (2) are used to lock and fix the anchor rods (3, 6, 7); the steel plate (1) and the fastening part (2) are passed through the outer wall of the anchor rods (3, 6, 7); the steel wire rope (4) is arranged below the steel plate (1); the steel wire rope (4) sequentially passes around a plurality of slope top anchor rods (3), slope surface anchor rods (6) and slope bottom anchor rods (7).

4. The green assembled flexible surface soil nailing support structure capable of rapid directional drainage according to claim 2 is characterized by: The top ends of the slope top anchor rod (3), slope surface anchor rod (6) and slope bottom anchor rod (7) are 30 cm away from the soil surface.

5. The green assembled flexible surface soil nailing support structure capable of rapid directional drainage according to claim 2 is characterized by: The invention also includes a filling assembly (13) arranged in the anchor rod (3, 6, 7), the filling assembly (13) including a filling chamber (131) and a driving unit, the filling chamber (131) is provided with a filling material, the outer wall of the filling chamber (131) is a filling chamber (131) made of a flexible material, a through hole (132) is provided at the bottom of the anchor rod (3, 6, 7), a puncture portion (133) for puncturing the filling chamber (131) is provided in the anchor rod (3, 6, 7), and the driving unit is used to squeeze the filling chamber (131) so that the puncture portion (133) punctures the filling chamber (131).

6. The green assembled flexible surface soil nailing support structure capable of rapid directional drainage according to claim 5 is characterized by: The driving unit is a driving rod, and the driving rod is slidably arranged in the anchor rod (3, 6, 7).

7. The green assembled flexible surface soil nailing support structure capable of rapid directional drainage according to claim 5 is characterized by: The driving unit comprises an extrusion plate (134), an airbag (135) and a puncture needle (136); the extrusion plate (134) is slidably arranged in the anchor rod (3, 6, 7); the airbag (135) is arranged below the extrusion plate (134); the puncture needle (136) is connected to a spring (137); the free end of the spring (137) is fixedly connected to the inner wall of the anchor rod (3, 6, 7); and the puncture needle (136) is used to puncture the airbag (135).

8. The green assembled flexible surface soil nailing support structure capable of rapid directional drainage according to claim 7 is characterized by: The extrusion plate (134) is connected to a tension spring (138), and the free end of the tension spring (138) is fixedly connected to the inner wall of the anchor rod (3, 6, 7).

9. The green assembled flexible surface soil nailing support structure capable of rapid directional drainage according to claim 7, characterized in that: The number of the poking needles (136) is a plurality surrounding the airbag (135); a guide groove (139) is provided in the anchor rods (3, 6, 7), and the poking needles (136) are slidably arranged in the guide groove (139).

10. The green assembled flexible surface soil nailing support structure capable of rapid directional drainage according to claim 7, characterized in that: The inner wall of the anchor rod (3, 6, 7) is provided with a sliding groove (130), and the extrusion plate (134) is slidably connected to the sliding groove (130).

Images