Greening protection slope of expressway roadbed

Abstract

The utility model relates to the technical field of roadbed side slopes, in particular to a greening protection slope of an expressway roadbed, which comprises a roadbed main body, an intercepting ditch is arranged at the top of the roadbed main body, a drainage ditch is arranged at the bottom of the roadbed main body, the intercepting ditch is communicated with the drainage ditch through a torrent groove, and hexagonal blocks and planting grids are alternately laid on the side wall of the roadbed main body. The planting grating is fixed to the roadbed body through fasteners, a water diversion plate and a water diversion groove are arranged in the torrent groove, the water diversion groove is communicated with the water seepage pipe, and the water seepage pipe is embedded below the planting grating. Water permeable holes are formed in the side wall of the water seepage pipe, the outer wall of the water seepage pipe is wrapped with non-woven fabric, water in the water seepage pipe permeates into soil through the water permeable holes, plant roots are guided to grow towards the deep layer, and the water and soil conservation capacity of the plant roots is enhanced; by means of the mode that the hexagonal blocks and the planting grids are alternately arranged, the hexagonal blocks can drain a large amount of rainwater to the drainage grooves, the plant root systems can fix deep soil, and the stability of the roadbed slope is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of subgrade slopes, and more specifically, to a green slope protection for a highway subgrade. Background Technique

[0002] After the construction of a highway subgrade is completed, its slope protection needs to be processed. The slope protection mainly prevents the highway subgrade from collapsing.

[0003] The main slope protection forms include plant slope protection and full paving of hexagonal blocks for splicing slope protection. When using pure plant slope protection, the soil layer on the surface of the subgrade is not easy to drain water, which easily causes soil erosion on the surface; when using the full paving of hexagonal blocks, the internal soil body cannot be fixed, and it is easy to slide from the inside. Content of the Utility Model

[0004] The utility model aims to overcome the above situations and provide a green slope protection for a highway subgrade, which can combine the forms of plant slope protection and hexagonal block slope protection to make the overall subgrade slope more stable.

[0005] A green slope protection for a highway subgrade includes a subgrade main body. A catch water ditch is provided at the top of the subgrade main body, and a drainage ditch is provided at the bottom of the subgrade main body. The catch water ditch and the drainage ditch are connected by a chute. The side wall of the subgrade main body is alternately paved with hexagonal blocks and planting grids. The planting grids are fixed to the subgrade main body through fasteners. An引水板 (water diversion plate) and a water diversion groove are provided in the chute. The water diversion groove is communicated with a water seepage pipe, and the water seepage pipe is buried under the planting grid.

[0006] Further, the planting grid is a regular hexagon frame. The upper and lower sides of the planting grid are spliced with the hexagonal blocks. The inside of the planting grid is planting soil, and plants are planted in the planting grid.

[0007] Further, the fastener includes a plugging pin and a connecting clip. The plugging pin is slidably connected to the connecting clip.

[0008] Further, the connecting clip is in a "冂" shape. The connecting clip clamps the side walls of two adjacent planting grids. A vertical opening is provided at one end of the connecting clip, and the plugging pin penetrates through the opening.

[0009] Further, the bottom of the plugging pin is a tip. Threads are provided on the side wall of the bottom of the plugging pin. The bottom of the plugging pin is inserted into the planting soil, and the diameter of the top of the plugging pin is larger than the diameter of the opening.

[0010] Furthermore, the water diversion trough is opened on the rear wall of the rapids trough, and the water diversion trough includes a first trough body and a second trough body, the first trough body and the second trough body are alternately arranged from top to bottom, the first trough body and the second trough body are both obliquely arranged, and the inclination directions of the first trough body and the second trough body are opposite.

[0011] Furthermore, the first trough body and the second trough body both extend to the side wall of the rapids trough, one end of the seepage pipe is connected to the first trough body and the second trough body, a water-permeable hole is opened on the side wall of the seepage pipe, and the outer wall of the seepage pipe is wrapped with non-woven fabric.

[0012] Furthermore, the water guide plate is embedded in the first trough body and the second trough body, the end of the water guide plate away from the seepage pipe is sealed with the side wall of the rapid flow trough, and the end of the water guide plate close to the seepage pipe is spaced from the side wall of the rapid flow trough.

[0013] Furthermore, a cast iron grate is provided on the top of the rapid flow trough, and a cement blanket is laid on the upper part of the rapid flow trough.

[0014] Furthermore, a concrete cushion layer is provided between the hexagonal block and the roadbed body, and a concrete cushion layer is also provided on the side wall of the rapid flow trough.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] ① The first trough body and the second trough body are extended to the side wall of the rapids trough, one end of the seepage pipe is connected with the first trough body and the second trough body, the seepage pipe is horizontally arranged in the lower soil of the planting grid, the side wall of the seepage pipe is provided with water-permeable holes, the outer wall of the seepage pipe is wrapped with non-woven fabric, the water in the seepage pipe penetrates into the soil through the water-permeable holes, guides the plant roots to grow to a deeper level, and enhances the soil and water conservation capacity of the plant roots.

[0017] ② By alternating the layout of hexagonal blocks and planting grids, the hexagonal blocks can discharge a large amount of rainwater into the drainage ditch, and the plant roots can fix the deep soil, thereby enhancing the stability of the roadbed slope and reducing the chance of collapse. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the green slope protection of the highway roadbed.

[0020] Figure 2 It is a schematic diagram of rapids troughs and seepage pipes in the green slope protection of a highway roadbed.

[0021] Figure 3 It is a schematic diagram of fasteners in the green slope protection of a highway roadbed.

[0022] In the figure: 1. main body of roadbed; 11. intercepting ditch; 111. cast iron grate; 12. drainage ditch; 13. rapids trough; 131. cement blanket; 2. hexagonal block; 3. planting grid; 31. plant; 4. fastener; 41. connecting clip; 42. insert; 5. water diversion plate; 6. water diversion trough; 61. first trough body; 62. second trough body; 7. seepage pipe; 71. water permeable hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1 As shown, a green slope protection for a highway roadbed includes a roadbed body 1, a drainage ditch 11 is arranged on the top of the roadbed body 1, a drainage ditch 12 is arranged on the bottom of the roadbed body 1, the drainage ditch 11 and the drainage ditch 12 are connected by a rapid flow groove 13, the rapid flow grooves 13 are evenly distributed on the roadbed body 1 in the horizontal direction, the side walls of the roadbed body 1 are alternately paved with hexagonal blocks 2 and planting grids 3, the planting grids 3 are fixed to the roadbed body 1 by fasteners 4, a water diversion plate 5 and a water diversion groove 6 are arranged in the rapid flow groove 13, the water diversion groove 6 is connected with a seepage pipe 7, and the seepage pipe 7 is buried under the planting grid 3.

[0025] The planting grid 3 is a regular hexagonal frame, and the top and bottom of the planting grid 3 are spliced ​​with the hexagonal blocks 2. The first row of hexagonal blocks 2 is laid in the horizontal direction near the top of the slope of the roadbed main body 1, and the planting grid 3 is installed in the second row. The side of the planting grid 3 close to the rapids trough 13 is also laid with hexagonal blocks 2, and the hexagonal blocks 2 continue to be laid in the third row. And so on, the hexagonal blocks 2 and the planting grid 3 are laid alternately. The hexagonal blocks 2 clamp the planting grid 3 to fix the position of the planting grid 3. There is planting soil in the planting grid 3, and the bottom of the planting grid 3 is inserted into the planting soil. The contact part of the planting grid 3 and the hexagonal blocks 2 is connected with adhesive mortar.

[0026] Plants 31 are planted in the planting grid 3 , and the roots of the plants 31 extend into the roadbed body 1 , which can play a role in soil and water conservation, reduce soil and water loss, and beautify the surrounding environment of the highway.

[0027] The fastener 4 is used to fix two adjacent planting grids 3, such as Figure 3As shown, the fastener 4 includes a dowel 42 and a connecting clip 41, and the dowel 42 is slidably connected to the connecting clip 41.

[0028] The connecting clip 41 is in a "冂" shape. The connecting clip 41 clamps the side walls of two adjacent planting grids 3, and the connecting clip 41 connects two adjacent planting grids 3 into a whole, enhancing the integrity of the planting grid 3 and reducing the possibility of the planting grid 3 falling off. One end of the connecting clip 41 is provided with a vertical opening, and the dowel 42 passes through the opening. The connecting clip 41 has a larger thickness on the side where the opening is provided, which is convenient for stabilizing the dowel 42.

[0029] The bottom of the dowel 42 is a tip, and the side wall of the bottom of the dowel 42 is provided with threads. When installing the dowel 42, the dowel 42 is rotated so that the bottom of the dowel 42 penetrates into the planting soil. As the insertion depth of the dowel 42 increases, the dowel 42 is anchored in the planting soil, further fixing the position of the planting grid 3. The diameter of the top of the dowel 42 is larger than the diameter of the opening. When the top of the dowel 42 contacts the opening, the connecting clip 41 restricts the dowel 42 from moving further.

[0030] As Figure 2 shown, a water diversion trough 6 is opened on the rear wall of the rapid flow trough 13. The water diversion trough 6 includes a first trough body 61 and a second trough body 62. The first trough body 61 and the second trough body 62 are alternately arranged from top to bottom. Both the first trough body 61 and the second trough body 62 are obliquely arranged, and the inclination directions of the first trough body 61 and the second trough body 62 are opposite. For example: the top of the first trough body 61 is on the left and the bottom is on the right, and the top of the second trough body 62 is on the right and the bottom is on the left. The bottoms of both the first trough body 61 and the second trough body 62 are on the side of the planting grid 3.

[0031] Both the first trough body 61 and the second trough body 62 extend to the side wall of the rapid flow trough 13. One end of the water permeable pipe 7 is connected to the first trough body 61 and the second trough body 62. The water permeable pipe 7 is horizontally arranged in the lower layer of soil of the planting grid 3. The side wall of the water permeable pipe 7 is provided with water permeable holes 71. The outer wall of the water permeable pipe 7 is wrapped with non-woven fabric. The non-woven fabric prevents soil from blocking the water permeable holes 71. The water in the water permeable pipe 7 seeps into the soil through the water permeable holes 71, guiding the roots of the plant 31 to grow deeper and enhancing the soil and water conservation ability of the roots of the plant 31.

[0032] The water diversion plate 5 is embedded in the first trough body 61 and the second trough body 62. The end of the water diversion plate 5 away from the seepage pipe 7 is sealed with the side wall of the rapid flow trough 13. There is a gap between the end of the water diversion plate 5 close to the seepage pipe 7 and the side wall of the rapid flow trough 13. The top of the water diversion plate 5 is lower than the upper surface of the rapid flow trough 13. The water in the intercepting ditch 11 flows downward from the top of the rapid flow trough 13. When the water volume is small and the water flow depth does not submerge the water diversion plate 5, the water diversion plate 5 guides the water to the first trough body 61, and then allows the water to enter the seepage pipe 7. Part of the water will flow through the first trough body 61 and enter the second trough body 62. In this way, the water enters the seepage pipe 7 under each layer of the planting grid 3, promoting the root growth of the plant 31; when the water flow is large, the water can still enter the first trough body 61 or the second trough body 62, and the excess water can directly flow into the drainage ditch 12.

[0033] A cast iron grate 111 is provided on the top of the rapid flow trough 13 , and the cast iron grate 111 can filter large pieces of debris and garbage to prevent the garbage from clogging the water diversion trough 6 .

[0034] A cement blanket 131 is laid on the upper part of the rapid flow trough 13, and the cement blanket 131 blocks the upper part of the rapid flow trough 13. On rainy days, rainwater can be directly drained to the drainage ditch 12 through the cement blanket 131, reducing the drainage burden of the rapid flow trough 13. The rapid flow trough 13 mainly drains the water flowing into the intercepting ditch 11 from the highway road surface to the drainage ditch 12.

[0035] A concrete cushion layer is provided between the hexagonal block 2 and the main body of the roadbed 1, and a concrete cushion layer is also provided on the side wall of the rapids trough 13. During the construction of this slope protection, the planting grid 3 is first laid out and positioned, and the seepage pipe 7 is fixed to the slope surface. Then, backfill soil is used to cover the seepage pipe 7 and shape the rapids trough 13 and the water diversion trough 6 to form the main body of the roadbed 1. Next, the planting grid 3 is installed and planting soil and plants 31 are filled in. Next, the concrete cushion layer is poured, and no concrete cushion layer is poured in the planting grid 3. Then, the cement blanket 131 is laid on the upper part of the rapids trough 13, and finally, the hexagonal block 2 is laid on the concrete cushion layer by mortar bonding.

[0036] By alternately arranging the hexagonal blocks 2 and the planting grids 3, the hexagonal blocks 2 can discharge a large amount of rainwater to the drainage ditch, and the roots of the plants 31 can fix the deep soil, thereby enhancing the stability of the roadbed slope and reducing the probability of collapse.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A green slope protection for a highway roadbed, comprising a roadbed body (1), characterized in that: A catch ditch (11) is provided at the top of the subgrade body (1), a drainage ditch (12) is provided at the bottom of the subgrade body (1), the catch ditch (11) and the drainage ditch (12) are connected through a chute (13), hexagonal blocks (2) and planting grids (3) are alternately laid on the side wall of the subgrade body (1), the planting grid (3) is fixed to the subgrade body (1) by fasteners (4), a water diversion plate (5) and a water diversion groove (6) are provided in the chute (13), the water diversion groove (6) is communicated with a drain pipe (7), and the drain pipe (7) is buried below the planting grid (3).

2. The greening slope protection for highway roadbed according to claim 1 is characterized by: The planting grid (3) is a regular hexagonal frame, the upper and lower sides of the planting grid (3) are spliced with the hexagonal blocks (2), the inside of the planting grid (3) is planting soil, and plants (31) are planted in the planting grid (3).

3. The greening slope protection for highway roadbed according to claim 2 is characterized by: The fastener (4) includes a dowel (42) and a connecting clip (41), and the dowel (42) is slidably connected to the connecting clip (41).

4. The greening slope protection for highway roadbed according to claim 3 is characterized by: The connecting clip (41) is in a "冂" shape, the connecting clip (41) clamps the side walls of two adjacent planting grids (3), a vertical opening is provided at one end of the connecting clip (41), and the dowel (42) passes through the opening.

5. The greening slope protection for highway roadbed according to claim 4 is characterized by: The bottom of the dowel (42) is a tip, threads are provided on the side wall of the bottom of the dowel (42), the bottom of the dowel (42) is inserted into the planting soil, and the diameter of the top of the dowel (42) is larger than the diameter of the opening.

6. The greening slope protection for highway roadbed according to claim 2 is characterized by: The water diversion groove (6) is opened on the rear wall of the chute (13), the water diversion groove (6) includes a first groove body (61) and a second groove body (62), the first groove body (61) and the second groove body (62) are alternately arranged from top to bottom, both the first groove body (61) and the second groove body (62) are obliquely arranged, and the inclination directions of the first groove body (61) and the second groove body (62) are opposite.

7. The greening slope protection for highway roadbed according to claim 6 is characterized by: Both the first groove body (61) and the second groove body (62) extend to the side wall of the chute (13), one end of the drain pipe (7) is communicated with the first groove body (61) and the second groove body (62), water permeable holes (71) are provided on the side wall of the drain pipe (7), and the outer wall of the drain pipe (7) is wrapped with non-woven fabric.

8. The greening slope protection for highway roadbed according to claim 7 is characterized by: The water diversion plate (5) is embedded in the first groove body (61) and the second groove body (62), one end of the water diversion plate (5) away from the drain pipe (7) is sealed with the side wall of the chute (13), and there is a distance between one end of the water diversion plate (5) close to the drain pipe (7) and the side wall of the chute (13).

9. The greening slope protection for highway roadbed according to claim 8 is characterized by: A cast iron grate (111) is provided at the top of the chute (13), and a cement blanket (131) is laid on the upper part of the chute (13).

10. The greening slope protection for highway roadbed according to claim 1, characterized in that: A concrete cushion is provided between the hexagonal block (2) and the subgrade body (1), and a concrete cushion is also provided on the side wall of the chute (13).

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