A shale high slope protection structure

Abstract

This application relates to a shale high slope protection structure, belonging to the technical field of slope protection. The shale high slope protection structure includes a support and fixing frame layer, a buffer and filter layer, and an ecological surface layer. The support and fixing frame layer is installed on the slope. The buffer and filter layer is used to buffer and filter infiltrated water. The ecological surface layer is installed on the side of the buffer and filter layer away from the slope surface and is used to plant soil-stabilizing vegetation. A water-guiding channel is embedded in the buffer and filter layer to collect the water accumulated in the buffer and filter layer. A permeable pipe network is laid at the bottom of the water-guiding channel to drain the water accumulated in the water-guiding channel to the slope. By adopting the above technical solution, the support and fixing frame layer anchors the slope and provides basic stability, the buffer and filter layer filters infiltrated water, and the ecological surface layer plants vegetation to stabilize the soil. The filtered water is quickly drained from the slope through the water-guiding channel and the permeable pipe network, effectively solving the problem of protective layer collapse caused by shale softening when exposed to water.

Description

Technical Field

[0001] This application relates to the technical field of slope protection, and in particular to a shale high slope protection structure. Background Technology

[0002] Slope protection structures are engineering measures used to prevent the instability and collapse of soil and rock masses. They are commonly used for slope reinforcement in highway and railway projects and include modules such as retaining structures, surface protection, and drainage systems.

[0003] Current common technical solutions mainly employ rigid support structures such as gravity retaining walls and anchored frame beams, or flexible ecological protection technologies such as vegetated concrete and geogrids. The latter is increasingly used due to its environmental advantages, and its typical structure includes a supporting skeleton layer, a buffer filtration layer, and an ecological surface layer.

[0004] However, in some areas where the geology is mainly shale, the ecological protection layer is easily eroded and peeled off due to the softening property of shale when exposed to water, resulting in significant lack of long-term durability. This is especially true in humid areas such as Banan District in Chongqing, where traditional ecological protection systems fail more quickly due to low drainage efficiency and weak erosion resistance. Utility Model Content

[0005] To effectively address the problem of protective layer collapse caused by shale softening upon contact with water, this application provides a shale high slope protection structure.

[0006] This application provides a shale high slope protection structure, which adopts the following technical solution:

[0007] A shale high slope protection structure includes a support and fixing frame layer, a buffer and filter layer, and an ecological surface layer. The support and fixing frame layer is installed on the slope. The buffer and filter layer is installed on the support and fixing frame layer and is used to buffer and filter infiltrated water. The ecological surface layer is installed on the side of the buffer and filter layer away from the slope surface and is used to plant soil-stabilizing vegetation. The buffer and filter layer is embedded with a water guide channel for collecting water accumulated in the buffer and filter layer. The bottom of the water guide channel is covered with a permeable pipe network for draining the water accumulated in the water guide channel to the slope.

[0008] By adopting the above technical solutions, the supporting and fixed frame layer anchors the slope and provides basic stability, the buffer and filter layer filters the infiltrated water, and the ecological surface layer is planted with vegetation to stabilize the soil. The filtered water is then quickly discharged from the slope through the water diversion channel and permeable pipe network. Ultimately, the efficient drainage system significantly reduces the time that water soaks the shale and effectively solves the problem of the protective layer collapsing due to the softening of shale when it comes into contact with water.

[0009] Furthermore, the support and fixing frame layer includes:

[0010] Steel pipe piles are inserted on the slope, and multiple sets of the steel pipe piles are arranged in a quincunx pattern.

[0011] A transverse H-shaped steel beam is welded and fixed to multiple sets of steel pipe piles. The multiple sets of transverse H-shaped steel beams are spaced apart and form a spatial truss with the multiple sets of steel pipe piles.

[0012] By adopting the above technical solution, the plum blossom-shaped arrangement of steel pipe piles expands the anchorage range and disperses the slope stress. The steel pipe piles are fixed by welding with transverse H-shaped steel beams to form a three-dimensional support space truss, thereby enhancing the overall rigidity and suppressing slope deformation.

[0013] Furthermore, the transverse H-shaped steel beam is connected to the anchor bolts pre-embedded in the slope surface via nuts.

[0014] By adopting the above technical solution, the pre-embedded anchor bolts and nuts rigidly connect the transverse H-shaped steel beam to the slope, making up for the lack of welding fixation between it and the steel pipe pile. Through the double anchoring of the transverse H-shaped steel beam, the transverse H-shaped steel beam is effectively prevented from dislodging or sliding after the shale softens, and the coordinated deformation capacity between the support and fixing frame layer and the slope is improved.

[0015] Furthermore, the buffer filter layer is located within the space truss, and the buffer filter layer includes a lower drainage strip and an upper drainage strip. The upper drainage strip is disposed on the lower drainage strip and separated by geotextile. The diameter of the crushed stone particles in the upper drainage strip is smaller than the diameter of the crushed stone particles in the lower drainage strip.

[0016] By adopting the above technical solution, the space truss fixes the buffer filter layer, the upper drainage strip intercepts small particles of silt, the lower drainage strip ensures a large drainage volume, and the geotextile prevents the two layers of gravel from mixing, maintains the filtration gradient, and ultimately reduces the probability of clogging of the buffer filter layer.

[0017] Furthermore, the water guide channel is arranged along the length of the transverse H-shaped steel beam, and the water guide channel is filled with graded crushed stone.

[0018] By adopting the above technical solution, the graded crushed stone filling the water guide channel forms a porous water guiding path, which accelerates the flow of accumulated water into the permeable pipe network and reduces the retention time. At the same time, the graded crushed stone prevents the water guide channel from collapsing and maintains the structural stability.

[0019] Furthermore, the permeable pipe network passes through the transverse H-shaped steel beam and connects to the bottom of the water guide channel. The permeable pipe network collects the accumulated water in the water guide channel and discharges it into the bottom of the slope. The permeable pipe network includes a main pipe and multiple branch pipes. The main pipe is set in the buffer filter layer along the length of the slope and discharges the accumulated water into the bottom of the slope. The branch pipes pass through the transverse H-shaped steel beam and connect to the bottom of the water guide channel. The other side of the branch pipe is connected to the main pipe. The height of the connection between the branch pipe and the water guide channel is higher than the height of the connection between the branch pipe and the main pipe.

[0020] By adopting the above technical solution, the multi-component pipes quickly drain the water in the water channel into the main pipe, and the inlet end of the branch pipe is higher than the outlet end. At the same time, each section of transverse H-shaped steel beam corresponds to an independent drainage unit, which ultimately reduces the probability of backflow of water. Meanwhile, the zoned drainage reduces the impact of local blockage on the overall system.

[0021] Furthermore, the ecological surface layer contains a composite basalt fiber mesh, and the basalt fiber mesh has planting holes for planting vegetation.

[0022] By adopting the above technical solution, basalt fiber mesh is incorporated into the ecological soil layer. As the vegetation roots grow, they eventually intertwine with the basalt fiber mesh to form a reinforced soil mass, thereby improving the stability and erosion resistance of the soil layer.

[0023] Furthermore, an extension plate is bolted to the top of the transverse H-shaped steel beam, and the extension plate is inserted into the ecological surface layer and connected to the basalt fiber mesh.

[0024] By adopting the above technical solution, the supporting force of the transverse H-beam is transferred to the surface through the extension plate, and at the same time, it forms a mechanical anchoring point with the basalt fiber mesh, which inhibits the overall slippage of the surface layer and ultimately improves the deformation resistance of the ecological surface layer.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. When rainwater seeps into the ecological surface layer, it is filtered in stages within the buffer and filtration layer to prevent silt blockage. At the same time, due to the certain inclination of shale, seepage water in the slope fissures also enters the buffer and filtration layer through the geotextile and is eventually discharged into the drainage channel and discharged in a timely manner through the permeable pipe network. This significantly improves the long-term stability of shale slopes in humid environments and effectively solves the problem of protective layer collapse caused by shale softening when exposed to water.

[0027] 2. The slope is anchored by the support and fixing frame layer, and the anchor bolts are used to lock the transverse H-shaped steel beams, which enhances the stability of the support and fixing frame layer. The extension plate is inserted into the ecological surface layer and fixed to the basalt fiber mesh, which realizes the separation of areas and enhances the erosion resistance of the ecological surface layer. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of the shale high slope protection structure of this application;

[0029] Figure 2 This is a schematic diagram of the shale high slope protection structure of this application, which only shows the support and fixing frame layer and the permeable pipe network;

[0030] Figure 3 yes Figure 1 A cross-sectional schematic diagram of AA in the middle;

[0031] Figure 4 yes Figure 3 Enlarged schematic diagram of section B.

[0032] Reference numerals: 1. Supporting and fixing frame layer; 11. Steel pipe pile; 12. Transverse H-beam; 13. Space truss; 14. Anchor bolt; 2. Buffer filter layer; 21. Lower drainage strip; 22. Upper drainage strip; 23. Geotextile; 3. Water guide channel; 4. Permeable pipe network; 41. Main pipe; 42. Branch pipe; 5. Basalt fiber mesh; 6. Extension plate; 7. Ecological surface layer. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0034] This application discloses a shale high slope protection structure.

[0035] Reference Figure 1 and Figure 2 A shale high slope protection structure includes a support and fixing frame layer 1, a buffer and filter layer 2, and an ecological surface layer 7. The support and fixing frame layer 1 is set on the slope. The buffer and filter layer 2 is set on the support and fixing frame layer 1 and is used to buffer and filter infiltrated water. The ecological surface layer 7 is set on the side of the buffer and filter layer 2 away from the slope surface and is used to plant soil-stabilizing vegetation. The buffer and filter layer 2 is embedded with a water guide channel 3 for collecting the water accumulated in the buffer and filter layer 2. The bottom of the water guide channel 3 is laid with a permeable pipe network 4 for draining the water accumulated in the water guide channel 3 to the slope.

[0036] Reference Figure 2 The supporting and fixed frame layer 1 includes steel pipe piles 11 and transverse H-shaped steel beams 12. The steel pipe piles 11 are inserted into the slope, with the bottom of the steel pipe piles 11 inserted into the slope to improve the stability between the steel pipe piles 11 and the slope. Multiple sets of steel pipe piles 11 are arranged in a quincunx pattern. The transverse H-shaped steel beams 12 are installed on the multiple sets of steel pipe piles 11 along the width of the slope. The transverse H-shaped steel beams 12 are located on the side of the steel pipe piles 11 away from the bottom of the slope. The transverse H-shaped steel beams 12 are welded and fixed to the multiple sets of steel pipe piles 11. The multiple sets of transverse H-shaped steel beams 12 are spaced apart and form a spatial truss 13 with the multiple sets of steel pipe piles 11 to reduce the probability of the transverse H-shaped steel beams 12 sliding along the slope.

[0037] Reference Figure 2 Before installing the transverse H-beam 12, anchor bolts 14 are pre-embedded on the slope. Then, the transverse H-beam 12 passes through the exposed part of the anchor bolt 14 and is finally locked onto the anchor bolt 14 with nuts. This improves the fixing strength between the transverse H-beam 12 and the slope and reduces the probability of the transverse H-beam 12 detaching from the slope.

[0038] Reference Figure 2 , Figure 3 and Figure 4 The buffer filter layer 2 is located within the space truss 13. The buffer filter layer 2 includes a lower drainage strip 21 and an upper drainage strip 22. The lower drainage strip 21 is fixedly installed on the side of the space truss 13 closest to the slope. The upper drainage strip 22 is placed on the lower drainage strip 21 and is located on the side of the space truss 13 furthest from the slope. The upper drainage strip 22 and the lower drainage strip 21 are separated by geotextile 23. Specifically, the lower drainage strip 21 is composed of crushed stone particles, and a layer of geotextile 23 is fixedly installed on its bottom and top. The upper drainage strip 22 is also composed of crushed stone particles, and a layer of geotextile 23 is also placed on the top of the upper drainage strip 22. The diameter of the crushed stone particles in the upper drainage strip 22 is smaller than that in the lower drainage strip 21, thereby reducing the probability of clogging of the buffer filter layer 2. In this embodiment, the particle diameter of the upper drainage strip 22 is 10-20 mm, and the particle diameter of the lower drainage strip 21 is 20-40 mm.

[0039] Reference Figure 4 The water guide channel 3 is set along the length of the transverse H-shaped steel beam 12. The water guide channel 3 is filled with graded crushed stone so that the water accumulated in the lower drainage strip 21 and the upper drainage strip 22 flows into the water guide channel 3.

[0040] Reference Figure 2 The permeable pipe network 4 passes through the transverse H-shaped steel beam 12 and connects to the bottom of the water guide channel 3. The permeable pipe network 4 is used to collect the accumulated water in the water guide channel 3 and discharge it to the bottom of the slope. The permeable pipe network 4 includes a main pipe 41 and multiple branch pipes 42. The main pipe 41 is fixedly installed in the buffer filter layer 2 along the length of the slope. The main pipe 41 is used to discharge the accumulated water to the bottom of the slope. The branch pipes 42 pass through the transverse H-shaped steel beam 12 and connect to the bottom of the water guide channel 3. The other end of the branch pipes 42 is connected to the main pipe 41. The branch pipes 42 are connected to the water guide channel 3. The height of the connection point is higher than the connection point between the branch pipe 42 and the main pipe 41, thereby reducing the probability of water accumulating in the main pipe 41 flowing back into the water guide channel 3 through the branch pipe 42. Specifically, the slope is divided into multiple areas from top to bottom by multiple sets of transverse H-shaped steel beams 12. The water accumulating in the buffer filter layer 2 in each area is collected by the water guide channel 3 at the bottom of each area, and then discharged into the branch pipe 42. Finally, the water is collected through the main pipe 41 and discharged into the bottom of the slope, reducing the probability of water immersing the shale of the slope.

[0041] Reference Figure 3The ecological surface layer 7 contains a composite basalt fiber mesh 5 with planting holes for planting vegetation. This allows the plant roots to intertwine with the basalt fiber mesh 5, forming a reinforced soil mass, thereby improving the stability and erosion resistance of the soil layer. Simultaneously, an extension plate 6 is bolted to the top of the transverse H-beam 12. The extension plate 6 is inserted into the ecological surface layer 7, and its top is fixedly connected to the basalt fiber mesh 5. The extension plate 6 and the transverse H-beam 12 work together to divide the ecological surface layer 7 into multiple areas, reducing the probability of mutual interference between adjacent areas. Furthermore, the fixed connection between the extension plate 6 and the basalt fiber mesh 5 further enhances the stability of the ecological surface layer 7.

[0042] The working principle of this application embodiment is as follows:

[0043] The slope is anchored by the support frame layer 1, and the horizontal H-shaped steel beam 12 is locked with anchor bolts, which enhances the stability of the support frame layer 1. The extension plate 6 is inserted into the ecological surface layer 7 and fixed to the basalt fiber mesh 5, which separates the area and enhances the erosion resistance of the ecological surface layer 7. At the same time, when rainwater seeps into the ecological surface layer 7, it is filtered in stages in the buffer filter layer 2 to avoid silt blockage. Since the shale has a certain inclination, the seepage water in the slope fissures also enters the buffer filter layer 2 through the geotextile 23 and is finally discharged into the water channel 3 and discharged in time through the permeable pipe network 4. This significantly improves the long-term stability of the shale slope in the humid environment and effectively solves the problem of protective layer collapse caused by shale softening when exposed to water.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A shale high slope protection structure, characterized in that: It includes a support and fixing frame layer (1), a buffer filter layer (2) and an ecological surface layer (7). The support and fixing frame layer (1) is set on the slope. The buffer filter layer (2) is set on the support and fixing frame layer (1) and is used to buffer and filter the infiltrated water. The ecological surface layer (7) is set on the side of the buffer filter layer (2) away from the slope surface and is used to plant soil-stabilizing vegetation. The buffer filter layer (2) is embedded with a water guide channel (3) for collecting the water in the buffer filter layer (2). The bottom of the water guide channel (3) is laid with a permeable pipe network (4) for draining the water in the water guide channel (3) out of the slope.

2. The shale high slope protection structure according to claim 1, characterized in that: The supporting and fixing frame layer (1) includes: Steel pipe piles (11) are inserted on the slope, and multiple sets of steel pipe piles (11) are arranged in a quincunx pattern. A transverse H-shaped steel beam (12) is welded and fixed to multiple sets of steel pipe piles (11). The multiple sets of transverse H-shaped steel beams (12) are spaced apart and form a spatial truss (13) with the multiple sets of steel pipe piles (11).

3. The shale high slope protection structure according to claim 2, characterized in that: The transverse H-shaped steel beam (12) is connected to the anchor bolt (14) pre-embedded in the slope by a nut.

4. A shale high slope protection structure according to claim 2, characterized in that: The buffer filter layer (2) is located inside the space truss (13). The buffer filter layer (2) includes a lower drainage strip (21) and an upper drainage strip (22). The upper drainage strip (22) is set on the lower drainage strip (21) and separated by geotextile (23). The diameter of the crushed stone particles in the upper drainage strip (22) is smaller than the diameter of the crushed stone particles in the lower drainage strip (21).

5. A shale high slope protection structure according to claim 4, characterized in that: The water guide channel (3) is set along the length of the transverse H-shaped steel beam (12), and the water guide channel (3) is filled with graded crushed stone.

6. A shale high slope protection structure according to claim 5, characterized in that: The permeable pipe network (4) passes through the transverse H-shaped steel beam (12) and is connected to the bottom of the water guide channel (3). The permeable pipe network (4) collects the water in the water guide channel (3) and discharges it into the bottom of the slope. The permeable pipe network (4) includes a main pipe (41) and multiple branch pipes (42). The main pipe (41) is set in the buffer filter layer (2) along the length of the slope and discharges the water into the bottom of the slope. The branch pipes (42) pass through the transverse H-shaped steel beam (12) and are connected to the bottom of the water guide channel (3). The other side of the branch pipes (42) is connected to the main pipe (41). The height of the connection between the branch pipes (42) and the water guide channel (3) is higher than the height of the connection between the branch pipes (42) and the main pipe (41).

7. A shale high slope protection structure according to claim 2, characterized in that: The ecological surface layer (7) contains a composite basalt fiber mesh (5), and the basalt fiber mesh (5) has planting holes for planting vegetation.

8. A shale high slope protection structure according to claim 7, characterized in that: An extension plate (6) is bolted to the top of the transverse H-shaped steel beam (12). The extension plate (6) is inserted into the ecological surface layer (7) and connected to the basalt fiber mesh (5).

Images