A support device for preventing and controlling freeze-thaw damage to slopes in cold regions

Abstract

The present invention discloses a support device for preventing and controlling freeze-thaw damage to slopes in cold regions, comprising a freeze-thaw ring, a slope protection layer provided on the outside of the freeze-thaw ring, a herringbone frame provided on the outside of the slope protection layer, a constant temperature pipe for protecting the freeze-thaw ring provided in the slope protection layer and the freeze-thaw ring, and the constant temperature pipe fixes the herringbone frame. Furthermore, the slope protection layer is evenly provided with a plurality of expansion joints according to the actual width of the slope, and the expansion joints prevent the slope from cracking due to the expansion and deformation of the soil. The present invention can effectively stabilize the overall structure of the slope, facilitate the drainage of groundwater on the slope and reduce the moisture content. By regulating the freeze-thaw ring of the slope through the constant temperature pipe, even under environmental conditions that experience freeze-thaw cycles throughout the day, the support of the cold region slope can be achieved, the degree of freeze-thaw damage inside the slope can be reduced, the integrity and drainage performance of the slope can be improved, and the economic applicability of the cold region slope project can be maximized.

Description

Technical Field

[0001] The invention belongs to the technical field of slope support or building construction, and particularly relates to a support device for preventing and controlling freeze-thaw damage to slopes in cold regions. Background Art

[0002] With the rapid development of transportation networks in Northwest my country, construction problems caused by the local climate are increasing dramatically. Regions with perennially low temperatures or constant freeze-thaw cycles are severely impacted by freeze-thaw damage to structures, and freeze-thaw damage is particularly prevalent on slopes in cold regions. In cold climates, water in the soil or rock layers of slopes freezes into ice, melting during the day and refreezing at night, or melting in the summer and refreezing in the winter. This freeze-thaw effect can cause freeze-thaw weathering, freeze-thaw disturbance, and freeze-thaw mudflows within the soil and rock layers within the slope, significantly compromising the quality of slope construction.

[0003] At present, the main methods for preventing and controlling freeze-thaw of slopes include replacement with non-frost-expanding coarse aggregate and anchor support reinforcement. However, the complete replacement method has a long construction period, low economic benefits and certain safety hazards. Although the anchor support reinforcement method can greatly improve the overall stability of the slope and prevent landslides, the soil and rock layers inside the slope are very likely to frost-expand and crack under the action of freeze-thaw, and the friction between the soil and rock layers and the anchor will be greatly reduced, leading to problems such as anchor failure.

[0004] In order to prevent the influence of freeze-thaw damage on slopes in cold regions, a slope support device designed to solve the freeze-thaw effect problem in cold regions has great reference value for the implementation of actual roadbed slope protection projects in the northwest region. Summary of the Invention

[0005] The present invention is proposed to solve the problems existing in the prior art, and its purpose is to provide a support device for preventing and controlling freeze-thaw damage to slopes in cold regions.

[0006] Furthermore, the technical solution of the present invention is: a support device for preventing and controlling freeze-thaw damage to slopes in cold areas, comprising a freeze-thaw circle, a slope protection layer is arranged on the outside of the freeze-thaw circle, a herringbone frame is arranged outside the slope protection layer, and a constant temperature pipe is arranged in the slope protection layer and the freeze-thaw circle to protect the freeze-thaw circle, and the constant temperature pipe fixes the herringbone frame.

[0007] Furthermore, the slope protection layer is evenly provided with a plurality of expansion joints according to the actual width of the slope, and the expansion joints prevent the slope from cracking due to soil expansion and deformation.

[0008] Furthermore, the thermostatic tube is perpendicular to the slope protection layer, and the free end of the thermostatic tube forms a threaded connection section for fixing the herringbone frame.

[0009] Furthermore, a connection hole is formed in the herringbone frame, and the threaded connection section passes through the connection hole and is fixed by a nut.

[0010] Furthermore, the herringbone-shaped frame includes a water guide groove and a drainage groove. The water guide groove is in a herringbone shape, and the two free ends of the water guide groove are connected to the drainage groove.

[0011] Furthermore, the drainage ditch is laid along the slope direction of the slope protection layer, so as to drain the water in the water guide ditch to the foot of the slope.

[0012] Furthermore, connecting holes are formed at the corners of the water guide groove, and the connecting holes are higher than the two free ends of the water guide groove.

[0013] Furthermore, a transverse permeable pipe is provided in the slope protection layer and the freeze-thaw circle, and the drainage port at the free end of the permeable pipe is connected to the bottom of the drainage trough.

[0014] Furthermore, a hook-shaped baffle is formed at the free end of the water guide groove, and the hook-shaped baffle is folded upward to allow water to flow along the water guide groove.

[0015] The present invention can effectively stabilize the overall structure of the slope, facilitate the drainage of groundwater in the slope and reduce the moisture content. By adjusting the freeze-thaw circle of the slope through the constant temperature pipe, it can support the slope in cold areas even under environmental conditions that experience freeze-thaw cycles throughout the day, reduce the degree of freeze-thaw damage inside the slope, improve the integrity and drainage performance of the slope, and maximize the economic applicability of cold-area slope projects.

[0016] The protective layer structure of the present invention can slow down the penetration effect of the ambient temperature on the freeze-thaw zone of the slope and play a buffering role in the deformation of the slope; the herringbone skeleton can improve the overall stability of the slope. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic structural diagram of the herringbone skeleton in the present invention;

[0019] Figure 3 It is a structural schematic diagram of the water guide trough in the present invention;

[0020] Figure 4 It is a structural schematic diagram of the water permeable pipe in the present invention;

[0021] Figure 5 It is a structural schematic diagram of the thermostatic tube in the present invention;

[0022] in:

[0023] 1 herringbone frame 2 water channel

[0024] 3 permeable pipes 4 constant temperature pipes

[0025] 5 drainage grooves 6 expansion joints

[0026] 7 washers 8 nuts

[0027] 9 Slope protection layer 10 Freeze-thaw zone

[0028] 11 Drainage outlet 12 Connection hole

[0029] 2-1 hook-type baffle 3-1 filter layer

[0030] 3-2 steel frame 3-3 filter cloth

[0031] 4-1 Thermal Conductive Plate 4-2 Phase Change Thermal Storage Material

[0032] 4-3 partition 4-4 rebound body

[0033] 4-5 threaded connection section. DETAILED DESCRIPTION

[0034] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and embodiments:

[0035] like Figures 1 to 5 As shown, a support device for preventing and controlling freeze-thaw damage to slopes in cold regions includes a freeze-thaw circle 10, a slope protection layer 9 is provided on the outside of the freeze-thaw circle 10, a herringbone frame 1 is provided outside the slope protection layer 9, a constant temperature pipe 4 is provided in the slope protection layer 9 and the freeze-thaw circle 10 for protecting the freeze-thaw circle 10, and the constant temperature pipe 4 fixes the herringbone frame 1.

[0036] The slope protection layer 9 is evenly provided with a plurality of expansion joints 6 according to the actual width of the slope. The expansion joints 6 prevent the slope from cracking due to soil expansion and deformation.

[0037] The thermostatic tube 4 is perpendicular to the slope protection layer 9 , and the free end of the thermostatic tube 4 forms a threaded connection section 4 - 5 for fixing the herringbone frame 1 .

[0038] A connecting hole 12 is formed in the herringbone frame 1 , and the threaded connecting section 4 - 5 passes through the connecting hole 12 and is fixed by a nut 8 .

[0039] The herringbone frame 1 includes a water guide groove 2 and a drainage groove 5 . The water guide groove 2 is in a herringbone shape, and two free ends of the water guide groove 2 are connected to the drainage groove 5 .

[0040] The drainage ditch 5 is laid flat along the slope direction of the slope protection layer 9, so as to drain the water in the water guide ditch 2 to the foot of the slope.

[0041] A connecting hole 12 is formed at the corner of the water channel 2 , and the connecting hole 12 is higher than the two free ends of the water channel 2 .

[0042] A transverse water-permeable pipe 3 is further provided in the slope protection layer 9 and the freeze-thaw circle 10 , and a drainage port 11 at a free end of the water-permeable pipe 3 is connected to the bottom of the drainage trough 5 .

[0043] A hook-shaped baffle 2 - 1 is formed at the free end of the water guide trough 2 , and the hook-shaped baffle 2 - 1 is folded upward, so that water flows along the water guide trough 2 .

[0044] The threaded connection section 4 - 5 is also covered with a gasket 7 , which is located between the nut 8 and the herringbone frame 1 , thereby increasing the contact area.

[0045] The slope protection layer 9 is constructed by excavating and replacing the original soil layer of the slope with thermal insulation materials to reduce the impact of external environmental temperature changes on the slope soil layer.

[0046] The hook-shaped baffle 2 - 1 is used to collect surface soil debris and natural precipitation falling from the upper part and guide them into the drainage trough 5 .

[0047] Preferably, the connecting holes 12 are arranged in a rectangular array on a full slope.

[0048] Preferably, vertical baffles are provided on both sides of the drainage trough 5 to ensure that rainwater, debris, etc. are discharged into the foot of the slope.

[0049] The drainage grooves 5 are arranged vertically along the slope surface.

[0050] The drain outlet 11 of the skeleton is reserved in the drain groove and connected to the permeable pipe 3. The drain outlet 11 of the skeleton and the holes of the thermostatic pipe 4 are arranged in a staggered array.

[0051] Yet another embodiment

[0052] A support device for preventing and controlling freeze-thaw damage to slopes in cold regions comprises a freeze-thaw ring 10, a slope protection layer 9 is arranged outside the freeze-thaw ring 10, a herringbone frame 1 is arranged outside the slope protection layer 9, a constant temperature pipe 4 is arranged between the slope protection layer 9 and the freeze-thaw ring 10 to protect the freeze-thaw ring 10, and the constant temperature pipe 4 fixes the herringbone frame 1.

[0053] The slope protection layer 9 is evenly provided with a plurality of expansion joints 6 according to the actual width of the slope. The expansion joints 6 prevent the slope from cracking due to soil expansion and deformation.

[0054] The thermostatic tube 4 is perpendicular to the slope protection layer 9 , and the free end of the thermostatic tube 4 forms a threaded connection section 4 - 5 for fixing the herringbone frame 1 .

[0055] A connecting hole 12 is formed in the herringbone frame 1 , and the threaded connecting section 4 - 5 passes through the connecting hole 12 and is fixed by a nut 8 .

[0056] The herringbone frame 1 includes a water guide groove 2 and a drainage groove 5 . The water guide groove 2 is in a herringbone shape, and two free ends of the water guide groove 2 are connected to the drainage groove 5 .

[0057] The drainage ditch 5 is laid flat along the slope direction of the slope protection layer 9, so as to drain the water in the water guide ditch 2 to the foot of the slope.

[0058] A connecting hole 12 is formed at the corner of the water channel 2 , and the connecting hole 12 is higher than the two free ends of the water channel 2 .

[0059] A transverse water-permeable pipe 3 is further provided in the slope protection layer 9 and the freeze-thaw circle 10 , and a drainage port 11 at a free end of the water-permeable pipe 3 is connected to the bottom of the drainage trough 5 .

[0060] A hook-shaped baffle 2 - 1 is formed at the free end of the water guide trough 2 , and the hook-shaped baffle 2 - 1 is folded upward, so that water flows along the water guide trough 2 .

[0061] The threaded connection section 4 - 5 is also covered with a gasket 7 , which is located between the nut 8 and the herringbone frame 1 , thereby increasing the contact area.

[0062] The slope protection layer 9 is constructed by excavating and replacing the original soil layer of the slope with thermal insulation materials to reduce the impact of external environmental temperature changes on the slope soil layer.

[0063] The hook-shaped baffle 2 - 1 is used to collect surface soil debris and natural precipitation falling from the upper part and guide them into the drainage trough 5 .

[0064] Preferably, the connecting holes 12 are arranged in a rectangular array on a full slope.

[0065] Preferably, vertical baffles are provided on both sides of the drainage trough 5 to ensure that rainwater, debris, etc. are discharged into the foot of the slope.

[0066] The drainage grooves 5 are arranged vertically along the slope surface.

[0067] The drain outlet 11 of the skeleton is reserved in the drain groove and connected to the permeable pipe 3. The drain outlet 11 of the skeleton and the holes of the thermostatic pipe 4 are arranged in a staggered array.

[0068] In this embodiment, the water permeable pipe 3 is mainly composed of a steel frame 3-2, a filter layer 3-1, and a filter cloth 3-3.

[0069] The steel skeleton 3-2 is made of high-strength nickel-chromium alloy high-carbon steel wire, which is treated with phosphoric acid for rust prevention and covered with a PVC protective layer to prevent acid and alkali corrosion; the unique steel wire spiral reinforcement structure ensures that the pipe wall surface is flat and can withstand the corresponding soil pressure.

[0070] The filter layer 3-1 uses geotextile nonwovens as the filter layer, and utilizes the good air permeability and water permeability of polyester staple fiber needle-punched geotextile to allow water to pass through, while effectively intercepting flowing soil particles, fine sand, small stones, etc., ensuring effective filtration and preventing sediments from entering the pipe.

[0071] The warp yarns in the filter cloth 3-3 filter cloth are made of high-strength Teflon yarn covered with PVC, and the weft yarns are made of special fibers to form sufficient tensile strength.

[0072] Among them, the outer PVC is heated by resistance heating.

[0073] The basic working principle of the permeable pipe 3 is as follows: the steel skeleton 3-2 organically combines the pipe wall covering layer, namely the filter cloth 3-3 and the filter layer 3-1 into one, so that the permeable water can penetrate smoothly into the pipe, while the mud and sand impurities are blocked outside the pipe, thereby achieving the purpose of water permeation, filtration and drainage.

[0074] Yet another embodiment

[0075] A support device for preventing and controlling freeze-thaw damage to slopes in cold regions comprises a freeze-thaw ring 10, a slope protection layer 9 is arranged outside the freeze-thaw ring 10, a herringbone frame 1 is arranged outside the slope protection layer 9, a constant temperature pipe 4 is arranged between the slope protection layer 9 and the freeze-thaw ring 10 to protect the freeze-thaw ring 10, and the constant temperature pipe 4 fixes the herringbone frame 1.

[0076] The slope protection layer 9 is evenly provided with a plurality of expansion joints 6 according to the actual width of the slope. The expansion joints 6 prevent the slope from cracking due to soil expansion and deformation.

[0077] The thermostatic tube 4 is perpendicular to the slope protection layer 9 , and the free end of the thermostatic tube 4 forms a threaded connection section 4 - 5 for fixing the herringbone frame 1 .

[0078] A connecting hole 12 is formed in the herringbone frame 1 , and the threaded connecting section 4 - 5 passes through the connecting hole 12 and is fixed by a nut 8 .

[0079] The herringbone frame 1 includes a water guide groove 2 and a drainage groove 5 . The water guide groove 2 is in a herringbone shape, and two free ends of the water guide groove 2 are connected to the drainage groove 5 .

[0080] The drainage ditch 5 is laid flat along the slope direction of the slope protection layer 9, so as to drain the water in the water guide ditch 2 to the foot of the slope.

[0081] A connecting hole 12 is formed at the corner of the water channel 2 , and the connecting hole 12 is higher than the two free ends of the water channel 2 .

[0082] A transverse water-permeable pipe 3 is further provided in the slope protection layer 9 and the freeze-thaw circle 10 , and a drainage port 11 at a free end of the water-permeable pipe 3 is connected to the bottom of the drainage trough 5 .

[0083] A hook-shaped baffle 2 - 1 is formed at the free end of the water guide trough 2 , and the hook-shaped baffle 2 - 1 is folded upward, so that water flows along the water guide trough 2 .

[0084] The threaded connection section 4 - 5 is also covered with a gasket 7 , which is located between the nut 8 and the herringbone frame 1 , thereby increasing the contact area.

[0085] The slope protection layer 9 is constructed by excavating and replacing the original soil layer of the slope with thermal insulation materials to reduce the impact of external environmental temperature changes on the slope soil layer.

[0086] The hook-shaped baffle 2 - 1 is used to collect surface soil debris and natural precipitation falling from the upper part and guide them into the drainage trough 5 .

[0087] Preferably, the connecting holes 12 are arranged in a rectangular array on a full slope.

[0088] Preferably, vertical baffles are provided on both sides of the drainage trough 5 to ensure that rainwater, debris, etc. are discharged into the foot of the slope.

[0089] The drainage grooves 5 are arranged vertically along the slope surface.

[0090] The drain outlet 11 of the skeleton is reserved in the drain groove and connected to the permeable pipe 3. The drain outlet 11 of the skeleton and the holes of the thermostatic pipe 4 are arranged in a staggered array.

[0091] In this embodiment, the thermostatic tube 4 is mainly composed of a partition 4-3, a resilient body 4-4, a phase change heat storage material 4-2, a threaded connection section 4-5 and a temperature conducting thin plate 4-1.

[0092] The thermostatic tube 4 operates as follows: the thermally conductive sheet 4-1 transfers the temperature of the soil surrounding the thermostatic tube 4 to the phase-change thermal storage material 4-2. This material absorbs or releases heat through a phase change process, releasing energy without absorbing heat, thereby maintaining or maintaining a constant temperature. When the surrounding soil temperature drops, the phase-change thermal storage material 4-2 releases heat and transforms from a liquid to a solid state. When the surrounding soil temperature rises, the phase-change thermal storage material 4-2 absorbs heat and transforms from a solid to a liquid state.

[0093] The partition 4-3 divides the resilient body 4-4 and the phase change heat storage material 4-2 into multiple inner spaces, preventing the phase change heat storage material 4-2 from deforming and displacing during phase change, resulting in uneven dispersion of the phase change heat storage material 4-2 in the constant temperature tube 4 and reducing work efficiency.

[0094] The length of the thermostatic tube 4 is changed according to engineering requirements, and the length of the inner space is 20 cm to 40 cm.

[0095] The resilient body 4 - 4 has a large elastic deformation property, which ensures that the phase change heat storage material 4 - 2 is tightly fitted when the phase change occurs and the volume expands or shrinks.

[0096] The phase change heat storage material 4-2 may be, but is not limited to, PCM material.

[0097] The drainage outlet 11 is connected to the permeable pipe 3. The connecting holes 12 and the drainage outlets are arranged in a staggered square array along the slope. The horizontal distance between the centers of the connecting holes 12 is 1.6m to 2m, and the vertical distance between the centers of the holes is 1.1m to 1.5m. The horizontal distance between the centers of the drainage outlets is 1.6m to 2m, and the vertical distance between the centers of the drainage outlets is 1.1m to 1.5m.

[0098] The present invention can effectively stabilize the overall structure of the slope, facilitate the drainage of groundwater in the slope and reduce the moisture content. By adjusting the freeze-thaw circle of the slope through the constant temperature pipe, it can support the slope in cold areas even under environmental conditions that experience freeze-thaw cycles throughout the day, reduce the degree of freeze-thaw damage inside the slope, improve the integrity and drainage performance of the slope, and maximize the economic applicability of cold-area slope projects.

[0099] The protective layer structure of the present invention can slow down the penetration effect of the ambient temperature on the freeze-thaw zone of the slope and play a buffering role in the deformation of the slope; the herringbone skeleton can improve the overall stability of the slope.

Claims

1. A support device for preventing and controlling freeze-thaw damage to slopes in cold regions, comprising a freeze-thaw ring (10), characterized in that: A slope protection layer (9) is provided outside the freeze-thaw circle (10), a herringbone frame (1) is provided outside the slope protection layer (9), a constant temperature pipe (4) for protecting the freeze-thaw circle (10) is provided in the slope protection layer (9) and the freeze-thaw circle (10), and the constant temperature pipe (4) fixes the herringbone frame (1); The thermostatic tube (4) is perpendicular to the slope protection layer (9), and the free end of the thermostatic tube (4) forms a threaded connection section (4-5) for fixing the herringbone frame (1); A connecting hole (12) is formed in the herringbone frame (1), and the threaded connecting section (4-5) passes through the connecting hole (12) and is fixed by a nut (8); A transverse permeable pipe (3) is also provided in the slope protection layer (9) and the freeze-thaw zone (10), and the drainage port (11) at the free end of the permeable pipe (3) is connected to the bottom of the drainage trough (5); The permeable pipe (3) is composed of a steel frame (3-2), a filter layer (3-1), and a filter cloth (3-3); The steel skeleton (3-2) is made of high-strength nickel-chromium alloy high-carbon steel wire, which is treated with phosphoric acid for rust prevention and then covered with a PVC protective layer to prevent acid and alkali corrosion; the unique steel wire spiral reinforcement structure ensures that the pipe wall surface is smooth and can withstand the corresponding soil pressure; The constant temperature tube (4) is composed of a partition (4-3), a resilient body (4-4), a phase change heat storage material (4-2), a threaded connection section (4-5), and a thermal conductive thin plate (4-1); The thermal conductive thin plate (4-1) transmits the temperature of the soil surrounding the constant temperature tube (4) to the phase change heat storage material (4-2), absorbs heat or releases heat through the phase change process, and can release energy without absorbing heat, thereby playing a role in constant temperature or heat preservation; when the temperature of the surrounding soil decreases, the phase change heat storage material (4-2) releases heat and changes from liquid to solid; when the temperature of the surrounding soil increases, the phase change heat storage material (4-2) absorbs heat and changes from solid to liquid; The partition (4-3) divides the resilient body (4-4) and the phase-change heat storage material (4-2) into a plurality of inner spaces, thereby preventing the phase-change heat storage material (4-2) from deforming and displacing during phase change, thereby preventing the phase-change heat storage material (4-2) from being unevenly dispersed within the constant temperature tube (4) and reducing work efficiency.

2. A support device for preventing freeze-thaw damage to slopes in cold regions according to claim 1, characterized in that: The slope protection layer (9) is evenly provided with a plurality of expansion joints (6) according to the actual width of the slope, and the expansion joints (6) prevent the slope from cracking due to soil expansion and deformation.

3. The support device for preventing freeze-thaw damage to slopes in cold regions according to claim 1 is characterized in that: The herringbone-shaped frame (1) comprises a water guide groove (2) and a drainage groove (5); the water guide groove (2) is in a herringbone shape, and two free ends of the water guide groove (2) are connected to the drainage groove (5).

4. The support device for preventing freeze-thaw damage to slopes in cold regions according to claim 3, characterized in that: The drainage trough (5) is laid flat along the slope direction of the slope protection layer (9), thereby draining the water in the water guide trough (2) to the foot of the slope.

5. The support device for preventing freeze-thaw damage to slopes in cold regions according to claim 4, characterized in that: A connecting hole (12) is formed at a corner of the water guide groove (2), and the connecting hole (12) is higher than the two free ends of the water guide groove (2).

6. The support device for preventing freeze-thaw damage to slopes in cold regions according to claim 5, characterized in that: A hook-shaped baffle (2-1) is formed at the free end of the water guide trough (2), and the hook-shaped baffle (2-1) is folded upwards, thereby allowing water to flow along the water guide trough (2).

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