Flexible anti-sliding structure for stone roadbed slope in permafrost region

Abstract

The utility model discloses a permafrost region stone roadbed slope flexible anti-sliding structure, which belongs to the technical field of slope anti-sliding structures and comprises a permafrost region stone roadbed, and flexible anti-sliding components are arranged on two sides of the permafrost region stone roadbed. According to the utility model, firstly, an operator carries out lap joint on the longitudinal grids and the transverse grids through the connecting sleeves, and paves the connecting sleeves, the longitudinal grids and the transverse grids which are in lap joint on the side slope of the rocky roadbed in the permafrost region, and the connecting sleeves, the longitudinal grids and the transverse grids have good fitting property and tear resistance; the longitudinal grids, the transverse grids, the connecting sleeves and stones on the rocky roadbed side slope in the frozen soil region are fixed through the foam concrete layers, and the foam concrete layers can form flexible anti-sliding layers on the longitudinal grids and the transverse grids, so that the integrity of the rocky roadbed side slope in the frozen soil region can be better maintained; on one hand, good durability and integrity of the foam concrete layer are exerted, and on the other hand, the connection effect between rock blocks of the slope surface layer of the stone roadbed in the frozen soil area is enhanced.

Description

Technical Field

[0001] This utility model belongs to the technical field of slope anti-sliding structure, and in particular relates to a flexible anti-sliding structure for rock roadbed slopes in permafrost areas. Background Technology

[0002] Permafrost regions refer to areas where the underground soil remains frozen for extended periods under cold climatic conditions. On rocky roadbeds in permafrost regions, slopes need to be designed and constructed to ensure the stability and safety of the roadbed. To reduce the risk of landslides and collapses on the roadbed slopes and to improve the overall stability of the roadbed, flexible anti-slip structures are required to fix the slopes.

[0003] For example, Chinese patent document (CN216839496U) discloses a flexible slope protection structure, including a slope top with a waterproof layer on its surface, and a water interception ditch and a water retaining platform on the slope top; a slope body with a composite protective membrane laid on its surface, and a tensile reinforcing layer laid on top of the composite protective membrane; the composite protective membrane includes an impermeable layer, with a protective layer and a water-conducting layer laid above and below the impermeable layer, respectively; a composite mat and a drainage net laid on the slope surface at the bottom of the slope body, with the drainage net located below the composite protective membrane; multiple layers of drainage pipes arranged sequentially from top to bottom within the slope body, with the outlets of the drainage pipes extending out of the slope body surface; and a slope toe with a connected drainage ditch and a collection well. This utility model's slope protection surface layer has high tensile strength, a stable and reliable structure, and excellent drainage, flame retardant, and anti-aging properties. The main structure is reusable, environmentally friendly, and economical. However, during use, the slope stability and support stability of this structure are poor, which will affect the protection quality of the slope over a long period of time. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that the existing technology has poor slope stability and support stability during use, which will affect the quality of slope protection over a long period of time. Therefore, a flexible anti-sliding structure for rock roadbed slope in permafrost areas is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A flexible anti-slip structure for rock roadbed slope in permafrost areas includes a rock roadbed in permafrost areas, with flexible anti-slip components installed on both sides of the rock roadbed in permafrost areas, and an auxiliary reinforcement component installed on one side of the bottom of the flexible anti-slip components.

[0007] The flexible anti-slip component includes multiple longitudinal grids and multiple transverse grids. A connecting sleeve is provided at the junction of the transverse grids and longitudinal grids. A first through hole is provided at the junction of the connecting sleeve, the transverse grids and the longitudinal grids. An anchor rod is provided inside the first through hole. A layer of foamed concrete is provided on the outer periphery of the multiple anchor rods.

[0008] As a further description of the above technical solution:

[0009] The horizontal and vertical grilles are arranged in a cross shape, with the horizontal grilles positioned above the vertical grilles.

[0010] As a further description of the above technical solution:

[0011] The connecting sleeve has a transverse through hole and a longitudinal through hole on its two sides. The transverse through hole is located above the longitudinal through hole, and the transverse through hole and the longitudinal through hole are slidably connected to the transverse grid and the longitudinal grid, respectively.

[0012] As a further description of the above technical solution:

[0013] The cross-sectional shape of the rock roadbed in the frozen soil area is set as conical, and multiple second through holes are opened on the bottom side inside the rock roadbed in the frozen soil area. Ventilation pipes are installed inside the second through holes.

[0014] As a further description of the above technical solution:

[0015] The auxiliary reinforcement component includes a vertical plate, and the vertical plate has multiple third through holes inside, with the third through holes and the second through holes on the same axis.

[0016] As a further description of the above technical solution:

[0017] The third through hole is provided with a sealing layer. The sealing layer has an annular cross-sectional shape and is fitted around the outer periphery of the ventilation duct.

[0018] As a further description of the above technical solution:

[0019] Both sides of the third through hole are provided with rectangular grooves. The rectangular grooves are located inside the vertical plate. A rectangular block is slidably connected inside the rectangular groove. Multiple first threaded holes are opened at the longitudinal center of the rectangular block. The rectangular block is threadedly connected to a first bolt through the first threaded holes.

[0020] As a further description of the above technical solution:

[0021] The rectangular block has second threaded holes on both sides of the horizontal direction. The second threaded holes are located on both sides of the first threaded hole. The rectangular block is threadedly connected to the second bolt through the second threaded holes.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0023] 1. In this utility model, through the provision of flexible anti-slip components, operators first overlap the longitudinal and transverse grids using connecting sleeves, and then lay the overlapped connecting sleeves, longitudinal grids, and transverse grids onto the side slope of the permafrost rock roadbed. The good fit and tear resistance of the connecting sleeves, longitudinal grids, and transverse grids are more conducive to maintaining the integrity of the permafrost rock roadbed slope. The longitudinal grids, transverse grids, and connecting sleeves are firmly fixed to the permafrost rock roadbed slope using mortar and anchor bolts. On the one hand, this improves the fixing effect of the longitudinal grids, transverse grids, and connecting sleeves on the boulders of the permafrost rock roadbed slope; on the other hand, the mortar... Grouting and anchor bolts help increase the integrity between stones along the vertical direction of the rocky roadbed slope in the permafrost region. Then, appropriate foamed concrete is sprayed onto the longitudinal grid, transverse grid, and connecting sleeve surface layer through an external supply device to form a foamed concrete layer. The foamed concrete layer fixes the longitudinal grid, transverse grid, connecting sleeve, and stones on the rocky roadbed slope in the permafrost region. The foamed concrete layer also forms a flexible anti-slip layer on the longitudinal grid, transverse grid, and connecting sleeve. On the one hand, it gives full play to the good durability and integrity of the foamed concrete layer, and on the other hand, it strengthens the connection between stones on the surface layer of the rocky roadbed slope in the permafrost region.

[0024] 2. In this utility model, the vertical plate is installed inside the rocky roadbed in the frozen soil area by setting auxiliary reinforcement components. At this time, the sealing layer will provide auxiliary sealing for the connection of the ventilation duct. Then, the rectangular block is installed inside the rectangular groove. The rectangular block is fixed to the vertical plate and the rocky roadbed in the frozen soil area by the first bolt. This auxiliary reinforcement increases the support effect of the vertical plate on the outside of the ventilation duct, preventing the foamed concrete layer from settling due to the external environment and external factors after long-term use, and thus preventing it from acting on the outside of the ventilation duct, thereby preventing it from affecting the performance of the ventilation duct. This effectively improves the protection effect of the ventilation duct. The vertical plate will also assist in supporting the foamed concrete layer, further improving the installation stability and anti-slip effect of the foamed concrete layer. The second bolt fixes the lateral position of the rectangular block. With the longitudinal fixation of the first bolt, the vertical plate can be further fixed, improving the load-bearing capacity of the vertical plate in multiple directions, and further improving the stability and anti-slip properties of the vertical plate and the foamed concrete layer during use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0026] Figure 2 In this utility model Figure 1 A magnified schematic diagram of the structure at point A;

[0027] Figure 3 This is a partially disassembled three-dimensional structural diagram of the flexible anti-slip component in this utility model;

[0028] Figure 4 In this utility model Figure 3 A magnified schematic diagram of the structure at point B.

[0029] Legend:

[0030] 1. Rocky roadbed in frozen soil area; 2. Auxiliary reinforcement components; 201. Vertical plate; 202. Sealing layer; 203. Rectangular groove; 204. Rectangular block; 205. First bolt; 206. Second bolt; 3. Ventilation duct; 4. Flexible anti-skid component; 401. Longitudinal grid; 402. Horizontal grid; 403. Connecting sleeve; 404. First through hole; 405. Anchor bolt; 406. Foamed concrete layer. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-4 This utility model provides a technical solution: a flexible anti-slip structure for a rocky roadbed slope in a permafrost region, including a rocky roadbed 1 in a permafrost region, with flexible anti-slip components 4 on both sides of the rocky roadbed 1 in a permafrost region, and an auxiliary reinforcement component 2 on one side of the bottom of the flexible anti-slip component 4.

[0033] The flexible anti-skid component 4 includes multiple longitudinal grids 401 and multiple transverse grids 402. A connecting sleeve 403 is provided at the junction of the transverse grids 402 and the longitudinal grids 401. A first through hole 404 is provided at the junction of the connecting sleeve 403, the transverse grids 402 and the longitudinal grids 401. An anchor rod 405 is provided inside the first through hole 404. A foamed concrete layer 406 is provided on the outer periphery of the multiple anchor rods 405. The transverse grids 402 and the longitudinal grids 401 are arranged in a cross shape, and the transverse grids 402 are located above the longitudinal grids 401. A transverse through hole and a longitudinal through hole are respectively provided on both sides inside the connecting sleeve 403. The transverse through hole is located above the longitudinal through hole, and the transverse through hole and the longitudinal through hole are slidably connected to the transverse grids 402 and the longitudinal grids 401, respectively. The cross-sectional shape of the rock roadbed 1 in the frozen soil area is set as conical. Multiple second through holes are provided on the bottom side inside the rock roadbed 1 in the frozen soil area. A ventilation pipe 3 is provided inside the second through hole.

[0034] Specific implementation method: First, the operator uses the connecting sleeve 403 to overlap the longitudinal grid 401 and the transverse grid 402, ensuring the overlap width is not less than 10cm. Then, the overlapped connecting sleeve 403, longitudinal grid 401, and transverse grid 402 are laid onto the side slope of the rocky roadbed 1 in the frozen soil area. After laying, the entire structure is adjusted to ensure its straightness during use. After backfilling but before compaction, the longitudinal grid 401 and transverse grid 402 are tensioned again with uniform force. The longitudinal grid 401 and transverse grid 402 should be positioned promptly after laying. For shotcreting and anchoring, the exposure time should not exceed 48 hours. The good fit and tear resistance of the connecting sleeve 403, longitudinal grid 401, and transverse grid 402 are more conducive to maintaining the integrity of the rocky roadbed slope in the permafrost area. Using an external handheld pneumatic rock drill, holes are drilled at the rocky roadbed slope and connecting sleeve 403 in the permafrost area. The drilling depth, diameter, angle, and spacing are determined. After drilling, cement mortar is injected into the holes. Following injection, anchor rods 405 of appropriate length are inserted into the holes according to design requirements, ensuring that the anchor rods 405 are stably positioned within the holes. After the mortar has set and reached its full strength, the longitudinal grid 401, transverse grid 402, and connecting sleeve 403 are firmly fixed to the slope of the rocky roadbed 1 in the frozen soil area using the mortar and anchor bolts 405. This not only improves the fixing effect of the longitudinal grid 401, transverse grid 402, and connecting sleeve 403 on the boulders of the rocky roadbed 1 slope in the frozen soil area, but also increases the integrity between the boulders along the vertical direction of the rocky roadbed 1 slope in the frozen soil area using the mortar and anchor bolts 405. Then, suitable foamed concrete is sprayed onto the longitudinal grid 401 using an external supply device. The surface layer of the transverse grid 402 and the connecting sleeve 403 forms a foamed concrete layer 406. The foamed concrete layer 406 fixes the longitudinal grid 401, the transverse grid 402, the connecting sleeve 403 and the stones on the slope of the rocky roadbed 1 in the frozen soil area. The foamed concrete layer 406 also forms a flexible anti-slip layer on the longitudinal grid 401, the transverse grid 402 and the connecting sleeve 403. On the one hand, it gives full play to the good durability and integrity of the foamed concrete layer 406, and on the other hand, it strengthens the connection between the stones on the slope of the rocky roadbed 1 in the frozen soil area.

[0035] The auxiliary reinforcement component 2 includes a vertical plate 201. The vertical plate 201 has multiple third through holes inside. The third through holes and the second through holes are on the same axis. A sealing layer 202 is provided inside the third through hole. The sealing layer 202 has an annular cross-sectional shape and is fitted around the outer periphery of the ventilation duct 3. A rectangular groove 203 is provided on both sides of the third through hole. The rectangular groove 203 is located inside the vertical plate 201. A rectangular block 204 is slidably connected inside the rectangular groove 203. Multiple first threaded holes are provided at the longitudinal center of the rectangular block 204. The rectangular block 204 is threaded with first bolts 205 through the first threaded holes. Second threaded holes are provided on both sides of the rectangular block 204. The second threaded holes are located on both sides of the first threaded holes. The rectangular block 204 is threaded with second bolts 206 through the second threaded holes.

[0036] Detailed implementation: The vertical plate 201 is installed inside the rocky roadbed 1 in the frozen soil area. At this time, the sealing layer 202 will provide auxiliary sealing for the connection of the ventilation duct 3. Then, the rectangular block 204 is installed inside the rectangular groove 203. First, the rectangular block 204 is fixed to the vertical plate 201 and the rocky roadbed 1 in the frozen soil area by the first bolt 205. This further increases the supporting effect of the vertical plate 201 on the outside of the ventilation duct 3, preventing the foamed concrete layer 406 from settling due to the external environment and external factors after long-term use, thereby preventing it from acting on the outside of the ventilation duct 3 and thus preventing the ventilation duct from being affected. The performance of the duct 3 is affected, which effectively improves the protection of the ventilation duct 3. The vertical plate 201 will assist in supporting the foamed concrete layer 406, further improving the installation stability and anti-slip effect of the foamed concrete layer 406. The second bolt 206 fixes the lateral position of the rectangular block 204, and with the longitudinal fixation of the first bolt 205, the vertical plate 201 can be further fixed, which improves the load-bearing capacity of the vertical plate 201 in multiple directions, and further improves the stability and anti-slip properties of the vertical plate 201 and the foamed concrete layer 406 during use.

[0037] Working principle: During use, the operator first overlaps the longitudinal grid 401 and transverse grid 402 using the connecting sleeve 403, ensuring an overlap width of at least 10cm. The overlapped connecting sleeve 403, longitudinal grid 401, and transverse grid 402 are then laid onto the side slope of the rocky roadbed 1 in the frozen soil area. After laying, overall adjustments are made to ensure straightness during use. After backfilling but before compaction, the longitudinal grid 401 and transverse grid 402 are tensioned again with uniform force. After the longitudinal grid 401 and transverse grid 402 are laid and positioned, shotcrete should be applied promptly, and the exposure time should not exceed 48 hours. Using an external handheld pneumatic rock drill, holes are drilled on the slope of the rocky roadbed 1 in the frozen soil area and at the connecting sleeve 403. The drilling depth, diameter, angle, and spacing are determined. After drilling, cement mortar is injected into the holes. After injection, anchor rods 405 of appropriate length are inserted into the holes according to design requirements, ensuring the anchor rods 405 are stable in the hole. Wait for the mortar to slurry... After achieving strength, suitable foamed concrete is sprayed onto the surface of the longitudinal grid 401, transverse grid 402, and connecting sleeve 403 through an external supply device to form a flexible and anti-slip foamed concrete layer 406. The foamed concrete layer 406 is used to fix the longitudinal grid 401, transverse grid 402, connecting sleeve 403, and stones on the slope of the frozen soil rock roadbed 1. At the same time, the vertical plate 201 is installed inside the frozen soil rock roadbed 1. At this time, the sealing layer 202 will provide auxiliary sealing for the connection of the ventilation duct 3. Then, the rectangular block 204 is installed inside the rectangular groove 203. First, the rectangular block 204 is fixed to the vertical plate 201 and the frozen soil rock roadbed 1 by the first bolt 205. The lateral position of the rectangular block 204 is fixed by the second bolt 206. With the longitudinal fixation of the first bolt 205, the vertical plate 201 can be further fixed, which improves the load-bearing capacity of the vertical plate 201 in multiple directions.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A flexible anti-sliding structure for rock roadbed slopes in permafrost regions, comprising a rock roadbed in permafrost regions (1), characterized in that: Flexible anti-skid components (4) are installed on both sides of the rocky roadbed (1) in the frozen soil area, and an auxiliary reinforcement component (2) is installed on one side of the bottom of the flexible anti-skid component (4); The flexible anti-slip component (4) includes multiple longitudinal grids (401) and multiple transverse grids (402). A connecting sleeve (403) is provided at the junction of the transverse grids (402) and the longitudinal grids (401). A first through hole (404) is provided at the junction of the connecting sleeve (403), the transverse grids (402) and the longitudinal grids (401). An anchor rod (405) is provided inside the first through hole (404). A foamed concrete layer (406) is provided on the outer periphery of the multiple anchor rods (405).

2. The flexible anti-sliding structure for rocky roadbed slopes in permafrost regions according to claim 1, characterized in that: The horizontal grille (402) and the vertical grille (401) are arranged in a cross shape, with the horizontal grille (402) positioned above the vertical grille (401).

3. A flexible anti-sliding structure for rocky roadbed slopes in permafrost regions according to claim 2, characterized in that: The connecting sleeve (403) has a transverse through hole and a longitudinal through hole on its two sides. The transverse through hole is located above the longitudinal through hole, and the transverse through hole and the longitudinal through hole are slidably connected to the transverse grid (402) and the longitudinal grid (401) respectively.

4. The flexible anti-sliding structure for rocky roadbed slopes in permafrost regions according to claim 3, characterized in that: The cross-sectional shape of the rock roadbed (1) in the frozen soil area is set as conical. Multiple second through holes are opened on the bottom side inside the rock roadbed (1) in the frozen soil area, and ventilation pipes (3) are installed inside the second through holes.

5. A flexible anti-sliding structure for rocky roadbed slopes in permafrost regions according to claim 4, characterized in that: The auxiliary reinforcement component (2) includes a vertical plate (201), and the vertical plate (201) has multiple third through holes inside, with the third through holes and the second through holes on the same axis.

6. A flexible anti-sliding structure for rocky roadbed slopes in permafrost regions according to claim 5, characterized in that: The third through hole is provided with a sealing layer (202), the sealing layer (202) has an annular cross-sectional shape, and the sealing layer (202) is sleeved on the outer periphery of the ventilation duct (3).

7. A flexible anti-sliding structure for rocky roadbed slopes in permafrost regions according to claim 6, characterized in that: A rectangular groove (203) is provided on both sides of the third through hole. The rectangular groove (203) is located inside the vertical plate (201). A rectangular block (204) is slidably connected inside the rectangular groove (203). Multiple first threaded holes are opened at the longitudinal center of the rectangular block (204). The rectangular block (204) is threadedly connected to a first bolt (205) through the first threaded holes.

8. A flexible anti-sliding structure for rocky roadbed slopes in permafrost regions according to claim 7, characterized in that: The rectangular block (204) has second threaded holes on both sides of the lateral direction. The second threaded holes are located on both sides of the first threaded hole. The rectangular block (204) is threadedly connected to the second bolt (206) through the second threaded holes.

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