A protective device for soft soil foundations and roadbed slopes in plateau wetlands

Abstract

This utility model relates to the field of road engineering technology and discloses a protective device for soft soil foundations and roadbed slopes in plateau wetlands. It includes an asphalt pavement layer, with water-guiding and storage channels installed on both the front and back sides. A compression telescopic rod is installed inside the water-guiding and storage channel, and a compression spring is installed around the outer ring of the compression telescopic rod. A sealing ball is installed on one side of the compression telescopic rod and the compression spring. A diversion hole is formed inside the water-guiding and storage channel, and the sealing ball abuts against the diversion hole. The automatic opening and closing drainage mechanism, composed of the water-guiding and storage channel, compression telescopic rod, compression spring, sealing ball, and diversion hole, can automatically open or close the drainage channel according to water level changes. During the high-water season, it can quickly drain accumulated water to prevent water damage; during normal times, it can effectively seal, reduce water evaporation from the lower part of the roadbed, maintain the stability of the soft soil moisture content, avoid cracking and settlement caused by wet-dry cycles, and improve the long-term stability of the roadbed.

Description

Technical Field

[0001] This utility model relates to the field of road engineering technology, specifically a protective device for soft soil foundations and roadbed slopes in plateau wetlands. Background Technology

[0002] Plateau wetlands are a unique ecosystem distributed in high-altitude regions. Their complex geological conditions typically involve deep, soft soil foundations, characterized by high water content, large void ratio, low bearing capacity, high compressibility, and significant rheological properties. Constructing linear engineering projects such as highways and railways in these areas presents extremely severe challenges to ensuring roadbed stability and slope protection.

[0003] Chinese Patent Publication No. CN217949080U discloses a protective device for soft soil foundations and roadbed slopes in plateau wetlands, relating to the field of road engineering technology. This utility model includes dynamic compaction piers evenly distributed on the wetland body. A reinforcing grid is connected to the upper side of the dynamic compaction piers. A second concrete body is filled inside an equilateral hollow triangular support below the reinforcing grid. A first concrete body is filled inside a right-angled hollow triangular support inside the dynamic compaction piers. The hypotenuse of the right-angled hollow triangular support abuts against the waist side of the equilateral hollow triangular support. A roadbed body is set above the reinforcing grid. The bottom of the slope protection components on both sides of the roadbed body is located on the upper side of the non-wetland body on both sides of the wetland body. The slope protection components include a water-guiding and storage channel plate, a vegetation hexagonal channel, and T-shaped columns. This utility model, by setting up equilateral and right-angled hollow triangular supports, makes the roadbed structure more stable. Furthermore, by setting up vegetation hexagonal channels and T-shaped columns, the work steps for workers to connect the water-guiding and storage channel plate are simplified.

[0004] When implementing the above-mentioned solution, the applicant found that the drainage facility of the device has a single function and cannot be intelligently adjusted according to changes in water level. During the rainy season, it cannot quickly and efficiently drain large amounts of accumulated water, which can easily lead to water seepage and softening of the roadbed. Based on this, this utility model designs a protective device for soft soil foundations and roadbed slopes in plateau wetlands to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this utility model is to provide a protective device for soft soil foundations and roadbed slopes in plateau wetlands, which solves the problem of the single function of drainage facilities in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A protective device for soft soil foundations and roadbed slopes in plateau wetlands includes an asphalt road layer. Water-guiding and storage channels are installed on both the front and back sides of the asphalt road layer. A compression telescopic rod is installed inside the water-guiding and storage channel. A compression spring is installed on the outer ring of the compression telescopic rod. A sealing ball is installed on one side of the compression telescopic rod and the compression spring. A diversion hole is opened inside the water-guiding and storage channel, and the sealing ball abuts against the diversion hole.

[0008] Preferably, the compression telescopic rod and the compression spring are provided in four sets and arranged in a rectangular array, the sealing ball is provided in four sets and arranged in a rectangular array, and the diversion hole is provided in four sets and arranged in a rectangular array.

[0009] As can be seen from the above technical solution: when the water volume increases and the water level in the trough rises, the water pressure acts on the sealing ball, pushing it to move towards the diversion hole; the sealing ball is linked with the compression telescopic rod and the compression spring, and under the action of water pressure, the spring is compressed and the telescopic rod is retracted, thereby opening the diversion hole, realizing rapid diversion and drainage, and preventing water accumulation from scouring and eroding the roadbed slope.

[0010] Preferably, the asphalt road layer has hexagonal vegetation channels on both the front and back sides, and the hexagonal vegetation channels are provided in multiple sets and distributed in a rectangular array.

[0011] As can be seen from the above technical solutions, the hexagonal troughs of vegetation are distributed on both sides of the asphalt road layer. Their hexagonal structure helps to fix the soil and develop the vegetation root system, further enhancing the slope's erosion resistance and ecological stability. The vegetation helps to reduce the humidity around the roadbed through transpiration, forming a synergistic protection with the drainage system.

[0012] Preferably, a concrete layer is installed at the bottom of the asphalt layer, a crushed stone layer is installed at the bottom of the concrete layer, and a roadbed is installed at the bottom of the crushed stone layer.

[0013] As can be seen from the above technical solution, the concrete layer and the crushed stone layer jointly undertake the function of load transfer and diffusion, and the crushed stone layer also has the function of water permeability.

[0014] Preferably, a reinforcing grid is installed at the bottom of the roadbed, a soft soil layer is at the bottom of the reinforcing grid, and a dynamic compaction pier is installed inside the soft soil layer. Three sets of dynamic compaction piers are arranged horizontally, and an equilateral triangular bracket is installed between the dynamic compaction piers. The equilateral triangular bracket is located at the bottom of the reinforcing grid, and a concrete body is installed inside the equilateral triangular bracket.

[0015] The above technical solutions show that: the bottom of the roadbed is reinforced with a grid to effectively disperse the upper load and prevent stress concentration; the dynamic compaction piers and equilateral triangular supports in the soft soil layer form a composite foundation reinforcement system, which improves the overall rigidity and deformation resistance by filling with concrete, and suppresses the uneven settlement of the soft foundation.

[0016] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0017] 1. This utility model uses an automatic opening and closing drainage mechanism composed of a water-guiding and storage trough plate, a compression telescopic rod, a compression spring, a sealing ball, and a diversion hole. It can automatically open or close the drainage channel according to water level changes. During the wet season, it can quickly drain accumulated water and prevent water damage. At other times, it can effectively seal the water, reduce the evaporation of water in the lower part of the roadbed, maintain the stability of the moisture content of the soft soil, avoid cracking and settlement caused by wet-dry cycles, and improve the long-term stability of the roadbed.

[0018] 2. This utility model provides space for plant growth through the design of a hexagonal trough for vegetation. It utilizes the reinforcing effect of plant roots and the interception and transpiration effect of the canopy to complement the engineering drainage measures of the water-conducting and water-retaining trough. This not only significantly enhances the erosion and landslide resistance of the slope surface, but also achieves ecological restoration and enhances the sustainability and environmental friendliness of the protection measures. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a side view of the structure of this utility model;

[0021] Figure 3 for Figure 2 Enlarged view of point A;

[0022] Figure 4 This is a front view structural diagram of the present utility model.

[0023] The components are: 1. Asphalt pavement layer; 2. Water storage channel plate; 3. Extrusion telescopic rod; 4. Extrusion spring; 5. Sealing ball; 6. Diversion hole; 7. Vegetation hexagonal channel; 8. Concrete layer; 9. Crushed stone layer; 10. Subgrade; 11. Reinforcing grid; 12. Soft soil layer; 13. Dynamic compaction pier plate; 14. Equilateral triangular support; 15. Concrete body. Detailed Implementation

[0024] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please refer to Figures 1-4A protective device for soft soil foundations and roadbed slopes in plateau wetlands includes an asphalt road layer 1. Water-guiding and storage troughs 2 are installed on both the front and back of the asphalt road layer 1. A compression telescopic rod 3 is installed inside the water-guiding and storage trough 2. A compression spring 4 is installed on the outer ring of the compression telescopic rod 3. A sealing ball 5 is installed on one side of the compression telescopic rod 3 and the compression spring 4. A diversion hole 6 is opened inside the water-guiding and storage trough 2. The sealing ball 5 abuts against the diversion hole 6.

[0026] The compression telescopic rod 3 and the compression spring 4 are each provided in four sets arranged in a rectangular array. The sealing ball 5 is provided in four sets arranged in a rectangular array. The diversion hole 6 is provided in four sets arranged in a rectangular array. The asphalt road layer 1 has vegetation hexagonal through grooves 7 on both the front and back sides. The vegetation hexagonal through grooves 7 are provided in multiple sets arranged in a rectangular array.

[0027] In this embodiment of the invention, when the external water flow decreases, the water level in the tank drops, and the water pressure weakens, the elastic potential energy stored in the compression spring 4 is released, pushing the compression telescopic rod 3 to extend back, thereby pressing the sealing ball 5 back against the diversion hole 6 to form a seal.

[0028] Please refer to Figures 1-4 A concrete layer 8 is installed at the bottom of the asphalt layer 1, a crushed stone layer 9 is installed at the bottom of the concrete layer 8, and a roadbed 10 is installed at the bottom of the crushed stone layer 9. A reinforcing grid 11 is installed at the bottom of the roadbed 10, a soft soil layer 12 is installed at the bottom of the reinforcing grid 11, and a dynamic compaction pier 13 is installed inside the soft soil layer 12. Three sets of dynamic compaction piers 13 are arranged horizontally, and an equilateral triangular bracket 14 is installed between the dynamic compaction piers 13. The equilateral triangular bracket 14 is located at the bottom of the reinforcing grid 11, and a concrete body 15 is installed inside the equilateral triangular bracket 14.

[0029] In this embodiment of the invention, the canopy of vegetation can intercept some rainfall and reduce the splash erosion of the slope by raindrops; its transpiration acts like a biological water pump, continuously absorbing water from the roadbed soil and releasing it into the atmosphere, helping to lower the groundwater level, complementing the mechanical drainage function of the water storage trough 2, and enhancing the sustainability of protection from an ecological perspective.

[0030] During use, during rainfall or snowmelt, surface water flows along the asphalt road layer 1 slope to the water storage trough 2 for temporary storage. When the water volume increases and the water level in the trough rises to a certain height, the resulting water pressure acts on the spherical surface of the sealing ball 5. This pressure overcomes the preload of the compression spring 4, pushing the compression telescopic rod 3 to contract, causing the sealing ball 5 to disengage from the diversion hole 6, thereby opening the drainage channel. The accumulated water is then quickly discharged from the roadbed structure through the diversion hole 6, effectively preventing the infiltration of accumulated water into the roadbed or the direct scouring and erosion of the slope surface by surface runoff.

[0031] The drainage process is a dynamic equilibrium. When the external water inflow decreases, the water level in the trough drops, and the water pressure weakens, the elastic potential energy stored in the compression spring 4 is released, pushing the compression telescopic rod 3 to extend back, thereby pressing the sealing ball 5 back onto the diversion hole 6 to form a seal. This automatic opening and closing mechanism is crucial. It not only provides efficient drainage during the high-water season but also isolates the external air from the substructure during normal times, reducing the evaporation and loss of moisture inside the subgrade. This helps maintain the relatively stable moisture content of the soft soil and avoids structural damage caused by shrinkage cracking. The four sets of drainage units arranged in a rectangular array further improve drainage efficiency and system reliability.

[0032] While providing drainage, the hexagonal vegetated channels 7 form an ecological protective layer, providing space for planting herbaceous or shrubby plants. The growth and intertwining of plant roots can penetrate deep into the soil, forming a strong three-dimensional reinforcement network, which greatly improves the shear strength and integrity of the slope soil and effectively resists slope collapse. Compared with other shapes, the hexagonal design can provide a larger soil contact surface and structural stability in the same area, which is more conducive to the intertwining and fixation of roots.

[0033] In addition, the canopy of vegetation can intercept some rainfall and reduce the splash erosion of raindrops on the slope; its transpiration acts like a biological water pump, continuously absorbing water from the roadbed soil and releasing it into the atmosphere, helping to lower the groundwater level. This complements the mechanical drainage function of the water-conducting and storage trough plate 2, enhancing the sustainability of protection from an ecological perspective.

[0034] Uniform distribution of road surface load is key to preventing localized damage to the soft soil foundation. When a vehicle travels on the asphalt layer 1, the load is first transferred downwards to the concrete layer 8, which has high compressive strength and can initially diffuse the concentrated load. Subsequently, the load is transferred to the crushed stone layer 9, which is composed of loose particles. This layer not only further diffuses the stress but also, due to its good permeability, can be connected to the upper drainage system to promptly drain any small amount of water that may seep in, preventing water accumulation in the base layer.

[0035] Ultimately, the load is transferred to the subgrade 10. The entire transfer process diffuses layer by layer, transforming the concentrated load brought by the wheels into a uniformly distributed load acting on a larger area of ​​soft soil, significantly reducing the pressure on the foundation and creating favorable stress conditions for the underlying reinforcement system.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective device for soft soil foundations and roadbed slopes in plateau wetlands, comprising an asphalt road layer (1), characterized in that: The asphalt road layer (1) is equipped with a water storage trough plate (2) on both the front and back sides. The water storage trough plate (2) is equipped with a compression telescopic rod (3). The outer ring of the compression telescopic rod (3) is equipped with a compression spring (4). A sealing ball (5) is installed on one side of the compression telescopic rod (3) and the compression spring (4). A diversion hole (6) is opened inside the water storage trough plate (2). The sealing ball (5) abuts against the diversion hole (6).

2. The protective device for soft soil foundations and roadbed slopes in plateau wetlands according to claim 1, characterized in that: The compression telescopic rod (3) and the compression spring (4) are each provided in four sets and arranged in a rectangular array. The sealing ball (5) is provided in four sets and arranged in a rectangular array. The diversion hole (6) is provided in four sets and arranged in a rectangular array.

3. The protective device for soft soil foundations and roadbed slopes in plateau wetlands according to claim 1, characterized in that: The asphalt road layer (1) has vegetation hexagonal channels (7) on both the front and back sides. The vegetation hexagonal channels (7) are provided in multiple sets and are distributed in a rectangular array.

4. The protective device for soft soil foundations and roadbed slopes in plateau wetlands according to claim 1, characterized in that: A concrete layer (8) is installed at the bottom of the asphalt layer (1), a crushed stone layer (9) is installed at the bottom of the concrete layer (8), and a roadbed (10) is installed at the bottom of the crushed stone layer (9).

5. A protective device for soft soil foundations and roadbed slopes in plateau wetlands according to claim 4, characterized in that: The bottom of the roadbed (10) is equipped with a reinforcing grid (11), the bottom of the reinforcing grid (11) is a soft soil layer (12), the soft soil layer (12) is equipped with a dynamic compaction pier (13), the dynamic compaction pier (13) is arranged in three sets and is horizontally distributed, the dynamic compaction pier (13) is equipped with an equilateral triangular support (14) between the dynamic compaction pier (13), the equilateral triangular support (14) is located at the bottom of the reinforcing grid (11), and the equilateral triangular support (14) is equipped with a concrete body (15).

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