A fully permeable pavement structure suitable for large slopes

Abstract

The present invention discloses a fully permeable pavement structure suitable for steep slopes, relating to the technical field of steep slope pavements. The structure comprises a soil base layer and a functional layer disposed above the soil base layer. The functional layer comprises an interlayer, a load-bearing layer, a cushion layer, a leveling layer, and a permeable surface layer, forming a fully permeable pavement with a steep slope. A drainage plate group is disposed within the functional layer to guide water flow, wherein the drainage plate group comprises an upstream baffle, a middle drainage plate, and a downstream baffle. The upstream baffle is disposed on both side walls of the cushion layer. A plurality of middle drainage plates are provided. The side walls of the middle drainage plates are curved, and permeable channels are formed between each of the middle drainage plates. The top of the downstream baffle is plugged into the interior of the leveling layer and the permeable surface layer. The present invention has the advantages of good water permeability for sloped pavements, enabling water to effectively flow into the soil base layer, and preventing water accumulation in the downstream section of the slope.

Description

Technical Field

[0001] The invention belongs to the technical field of large-slope pavement, and in particular is a fully permeable pavement structure suitable for large-slope pavement. Background Art

[0002] A fully permeable pavement structure is a road structure that allows rainwater to penetrate directly through the pavement into the base layer. Its main feature is that all pavement layers are made of permeable materials. Rainwater can seep through the pavement structure layer and penetrate into the roadbed and into the soil base. This structure is suitable for areas with low pavement strength requirements, such as non-motorized vehicle lanes and landscape hard surfaces, as well as areas with a large soil base permeability coefficient and low groundwater level.

[0003] The fully permeable pavement structure can effectively reduce road surface water accumulation, improve road safety and traffic capacity, help rainwater infiltration and replenish groundwater resources, and can also reduce road surface temperature and reduce the urban heat island effect.

[0004] However, when the existing fully permeable pavement structure is used in slope construction, due to the influence of the slope, a part of the water will flow through the ramp into the flat road at the bottom of the slope road surface during the infiltration process, causing a lot of water to accumulate on the flat road, which is difficult to drain quickly. Over time, this will cause erosion and damage to the internal structure of the flat road at the bottom of the slope road surface. In addition, more water will flow into the interior of the slope road surface from the upstream section of the slope road surface, causing the slope road surface to be loaded with water permeability, resulting in poor water permeability of the slope road surface, and greater harm to the downstream section of the slope road surface. In view of this, a fully permeable pavement structure suitable for large slopes is proposed. Summary of the Invention

[0005] In order to solve the problems raised by the above background technology, the present invention proposes a fully permeable pavement structure suitable for large slopes.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A fully permeable pavement structure suitable for large slopes, comprising a soil base and

[0008] The functional layer is arranged above the soil base, and the functional layer includes an isolation layer, a load-bearing layer, a cushion layer, a leveling layer and a permeable surface layer to form a fully permeable pavement with a large slope;

[0009] The guide plate group is arranged inside the functional layer and is used to guide the water flow, wherein;

[0010] The guide plate group includes an upstream baffle, a middle guide plate and a downstream baffle. The upstream baffle is arranged on the two side walls of the cushion layer. Several middle guide plates are provided. The side walls of the middle guide plates are curved, and permeable channels are formed between the two middle guide plates. The top of the downstream baffle is plugged and connected to the inside of the leveling layer and the permeable surface layer. The lower side wall of the downstream baffle is curved and the upper side wall is flat.

[0011] As a further preferred embodiment of the present technical solution: the interlayer is laid above the soil base layer, and the interlayer is made of steel mesh, the top surface of the load-bearing layer is a slope structure and is laid above the interlayer, and the load-bearing layer is graded gravel mixed with aggregates of different particle sizes in a certain proportion, the cushion layer is laid on the top surface of the load-bearing layer, the cushion layer is paved with gravel and has a maximum particle size of 60 mm, the leveling layer is laid on the top surface of the cushion layer, and the leveling layer is paved with a mixture of coarse sand and stone chips.

[0012] As a further preferred embodiment of the present technical solution: the permeable surface layer is laid on the top surface of the leveling layer, the top surface of the permeable surface layer is arranged at an angle, and the permeable surface layer is made of a permeable asphalt material mixed with modified asphalt, slaked lime and fiber, and the slope direction of the top surface of the permeable surface layer is opposite to the slope direction of the top surface of the load-bearing layer.

[0013] As a further preferred embodiment of the present technical solution: a water storage tank is provided on the permeable surface layer, a permeable cover plate is provided on the top surface of the water storage tank, and a plurality of strip grooves are opened on the top of the permeable cover plate, and the water storage tank is provided above the downstream baffle.

[0014] As a further preferred embodiment of the present technical solution: a fixed plate group is provided on the load-bearing layer, the fixed plate group includes a plurality of strips, the shape of the plurality of strips are all strip-shaped, and the plurality of strips are plugged and connected to the load-bearing layer.

[0015] As a further preferred embodiment of the present technical solution: the bottom end of the guide plate group is plug-connected to the fixed plate group, and the cushion layer is filled inside the guide plate group.

[0016] As a further preferred embodiment of the present technical solution, the upstream baffle is in the shape of a rectangle, and a plurality of slots matching the strips are provided at the bottom of the upstream baffle, and the ends of the strips are connected to the downstream baffle.

[0017] As a further preferred embodiment of the present technical solution: a plurality of circular holes are provided at the bottom of the central drainage plate, and a plurality of slots 2 matching the strips are provided at the bottom of the central drainage plate, and the plurality of central drainage plates are arranged in a linear array, and the heights of the plurality of central drainage plates are arranged in a gradually decreasing manner.

[0018] As a further preferred embodiment of the present technical solution: S1, top flow blocking, the water flow on the flat road at the top of the slope road is blocked in the cushion layer below the flat road by an upstream baffle, and flows into the soil base layer below through the cushion layer;

[0019] S2, middle diversion: a portion of the water flow on the sloped road surface flows through the permeable surface layer into the leveling layer below, and is then directed into the permeable channel through multiple middle diversion plates in the leveling layer;

[0020] S3, bottom flow restriction: another part of the water flow on the slope road surface flows to the lower part on the surface of the permeable surface layer, and is concentrated into the water storage tank, and then flows into the leveling layer below through the water storage tank;

[0021] S4. When water flows continuously through multiple permeable channels onto the load-bearing layer, part of the water flows along the slope of the top surface of the load-bearing layer to the lower part, which is opposite to the direction of the water flow on the top surface of the permeable surface layer of the slope road surface, while the other part of the water continues to flow through the load-bearing layer into the soil base below.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In the present invention, by setting the middle drainage plate, the water flow on the slope road surface is effectively guided to enter the permeable channel in an orderly manner, avoiding the uneven infiltration and water accumulation problems caused by concentrated water flow. The upstream baffle blocks the water flow on the top flat road, reducing the permeability load of the slope section, improving the permeability efficiency, significantly enhancing the permeability effect of the slope road surface, and solving the problem of poor permeability.

[0024] 2. In the present invention, another part of the water flows through the permeable surface layer to the lower part, concentrates into the water storage tank, and then flows into the leveling layer and the permeable channel. The downstream baffle effectively blocks the water from entering the downstream section, protecting it from the harm of water accumulation.

[0025] 3. In the present invention, the water flow left by the downstream baffle and the water flow in the permeable channel flow into the load-bearing layer together. Affected by the slope, part of the water flow flows in the opposite direction through the holes in the middle drainage plate, and the other part continues to seep into the soil base, ensuring uniform distribution of water flow, avoiding damage to the low-lying foundation, further improving the permeability of the slope road surface, and effectively solving the problems of poor permeability and great harm to the downstream section. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 4It is a schematic diagram of the water storage tank structure of the present invention;

[0030] Figure 5 It is an enlarged schematic diagram of the water-permeable cover plate structure of the present invention;

[0031] Figure 6 This is a schematic structural diagram of the guide plate assembly of the present invention;

[0032] Figure 7 This is a schematic diagram of the disassembly of the load-bearing layer, fixed plate group and drainage plate group structure of the present invention;

[0033] Figure 8 Schematic diagram of the upstream baffle structure of the present invention;

[0034] Figure 9 This is a schematic structural diagram of the middle guide plate of the present invention;

[0035] Figure 10 It is a schematic diagram of the downstream baffle structure of the present invention.

[0036] Legend: 1. Soil base layer; 2. Interlayer; 3. Load-bearing layer; 4. Cushion layer; 5. Leveling layer; 6. Permeable surface layer; 601. Water storage tank; 602. Permeable cover plate; 7. Fixed plate group; 701. Strip plate; 8. Drainage plate group; 801. Upstream baffle; 802. Middle drainage plate; 803. Downstream baffle; 804. Slot one; 805. Slot two; 806. Hole. DETAILED DESCRIPTION

[0037] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] See also Figures 1-10 The present application provides a fully permeable pavement structure suitable for steep slopes, comprising a soil base layer 1 and a functional layer disposed above the soil base layer 1. The functional layer comprises an interlayer 2, a load-bearing layer 3, a cushion layer 4, a leveling layer 5, and a permeable surface layer 6 to form a fully permeable pavement with a steep slope.

[0039] A drainage plate group 8 is provided inside the functional layer for guiding water flow, wherein; the drainage plate group 8 includes an upstream baffle 801, a middle drainage plate 802 and a downstream baffle 803. The upstream baffle 801 is provided on the two side walls of the cushion layer 4, and there are several middle drainage plates 802. The side walls of the middle drainage plates 802 are curved, and a permeable channel is formed between each two middle drainage plates 802. The top of the downstream baffle 803 is plugged and connected to the inside of the leveling layer 5 and the permeable surface layer 6. The lower side wall of the downstream baffle 803 is curved and the upper side wall is flat. Through the setting of the middle drainage plate 802, the water flow on the slope road surface is effectively guided to enter the permeable channel in an orderly manner, avoiding the problems of uneven infiltration and water accumulation caused by concentrated water flow. The upstream baffle 801 blocks the water flow on the top flat road, reduces the permeability load of the slope section, improves the permeability efficiency, significantly enhances the permeability effect of the slope road surface, and solves the problem of poor permeability.

[0040] In this embodiment, the interlayer 2 is laid on top of the soil base 1, and the interlayer 2 is made of steel mesh. The interlayer 2 can reduce the amount of silt in the bottom soil base 1 and the graded crushed stone mixed with the load-bearing layer 3. The top surface of the load-bearing layer 3 is a slope structure and is laid on top of the interlayer 2. The load-bearing layer 3 is a graded crushed stone mixed with aggregates of different particle sizes in a certain proportion. The graded crushed stone has good water permeability, which allows water to pass through quickly. It has a high bearing capacity and can withstand loads such as vehicles. It has good stability, and the particles are embedded in each other to form a relatively stable structure. The cushion layer 4 is laid on the top surface of the load-bearing layer 3. The cushion layer 4 is paved with gravel and has a maximum particle size of 60 mm, which can be used for road The surface structure provides a stable foundation and has good permeability, which helps to quickly allow water to seep down. The leveling layer 5 is laid on the top surface of the cushion layer 4, and the leveling layer 5 is paved with a mixture of coarse sand and stone chips. The coarse sand and stone chips have good strength and stability, and can provide a relatively strong support structure for the permeable surface layer 6 above. The permeable surface layer 6 is laid on the top surface of the leveling layer 5. The top surface of the permeable surface layer 6 is arranged at an angle, and the permeable surface layer 6 is made of a permeable asphalt material mixed with modified asphalt, slaked lime and fiber. It has good permeability and anti-skid properties, can make rainwater quickly penetrate into the ground, reduce road surface water, and improve the anti-skid performance of the road surface and driving safety.

[0041] In this embodiment, a water storage tank 601 is provided on the permeable surface layer 6, and a permeable cover plate 602 is provided on the top surface of the water storage tank 601, and a plurality of strip grooves are opened on the top of the permeable cover plate 602. The water storage tank 601 is arranged above the downstream baffle 803. Water flows through the permeable surface layer 6 to a lower place, concentrates into the water storage tank 601, and then flows into the leveling layer 5 and the permeable channel. The downstream baffle 803 effectively blocks the water flow from entering the downstream section, protecting it from the harm of water accumulation.

[0042] In this embodiment, a fixed plate group 7 is provided on the load-bearing layer 3, and the fixed plate group 7 includes a plurality of strips 701, and the shapes of the plurality of strips 701 are all strip-shaped plates, and the plurality of strips 701 are plugged into and connected to the load-bearing layer 3, and the shape of the upstream baffle 801 is rectangular, and a plurality of slots 804 matching the strips 701 are provided at the bottom of the upstream baffle 801, and the ends of the strips 701 are connected to the downstream baffle 803.

[0043] In this embodiment, the bottom end of the guide plate group 8 is plugged and connected to the fixed plate group 7 , and the cushion layer 4 is filled in the interior of the guide plate group 8 .

[0044] In this embodiment, a plurality of circular holes 806 are provided at the bottom of the middle drainage plate 802, and a plurality of slots 805 matching the strips 701 are provided at the bottom of the middle drainage plate 802. The plurality of middle drainage plates 802 are arranged in a linear array, and the heights of the plurality of middle drainage plates 802 are arranged in a gradually decreasing manner. The slope direction of the top surface of the permeable surface layer 6 is opposite to the slope direction of the top surface of the load-bearing layer 3. The water flow left by the downstream baffle 803 and the water flow in the permeable channel flow into the load-bearing layer 3 together. Affected by the slope, part of the water flow flows in the opposite direction through the holes 806 on the middle drainage plate 802, and the other part continues to infiltrate into the soil base layer 1, ensuring uniform distribution of water flow, avoiding damage to the low foundation, further improving the permeability of the slope road surface, and effectively solving the problems of poor permeability and great harm to the downstream section.

[0045] S1, top flow blocking, the upstream baffle 801 blocks the water flow on the top flat road of the slope road into the cushion layer 4 below the flat road, and flows into the soil base layer 1 below through the cushion layer 4;

[0046] S2, middle diversion: a portion of the water flow on the sloped road surface flows through the permeable surface layer 6 into the leveling layer 5 below, and is then directed into the permeable channel through multiple middle diversion plates 802 in the leveling layer 5;

[0047] S3, bottom flow limiting, another part of the water flow on the slope road surface flows to the lower part on the surface of the permeable surface layer 6, and is concentrated into the water storage tank 601, and then flows into the leveling layer 5 below through the water storage tank 601;

[0048] S4. When water flows continuously through multiple permeable channels onto the load-bearing layer 3, part of the water flows along the slope of the top surface of the load-bearing layer 3 to the lower part, which is opposite to the direction of the water flow on the top surface of the permeable surface layer 6 of the slope road surface, while the other part of the water continues to flow through the load-bearing layer 3 into the soil base layer 1 below.

[0049] Working principle: When in use, the upstream baffle 801 blocks the water flow on the flat road top of the slope road surface in the cushion layer 4 below the flat road, and flows into the soil base layer 1 below through the cushion layer 4, and finally diverts it into the groundwater. A part of the water flow on the slope road surface flows into the leveling layer 5 below through the permeable surface layer 6, and is guided into the permeable channel through the multiple middle diversion plates 802 in the leveling layer 5, that is, it flows into the load-bearing layer 3 below through the cushion layer 4 in the permeable channel, and finally flows into the groundwater through the soil base layer 1. Another part of the water flow on the slope road surface flows to a lower place on the surface of the permeable surface layer 6 and is collected. The middle flow enters the water storage tank 601, flows into the leveling layer 5 below through the water storage tank 601, and further flows into the permeable channel. It is blocked by the downstream baffle 803, which limits the water flow into the flat road at the bottom of the sloping road surface. When the water flows continuously through multiple permeable channels and flows into the load-bearing layer 3, it is affected by the slope effect of the top surface of the load-bearing layer 3. Part of the water flows from high to low, that is, opposite to the water flow direction on the top surface of the permeable surface layer 6 of the sloping road surface, and the other part of the water continues to flow through the load-bearing layer 3 into the soil base layer 1 below, so that the water flows more evenly into the soil base layer 1.

[0050] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A fully permeable pavement structure suitable for large slopes, comprising a soil base (1), characterized in that: Also includes A functional layer is provided above the soil base layer (1), wherein the functional layer comprises an isolation layer (2), a load-bearing layer (3), a cushion layer (4), a leveling layer (5) and a permeable surface layer (6) to form a fully permeable road surface with a large slope; The guide plate group (8) is arranged inside the functional layer and is used to guide the water flow, wherein; The guide plate group (8) comprises an upstream baffle (801), a middle guide plate (802) and a downstream baffle (803), wherein the upstream baffle (801) is arranged on two side walls of the cushion layer (4), a plurality of middle guide plates (802) are provided, the side walls of the middle guide plates (802) are curved, and a permeable channel is formed between two middle guide plates (802), the top of the downstream baffle (803) is plug-connected to the inside of the leveling layer (5) and the permeable surface layer (6), the lower side wall of the downstream baffle (803) is curved and the upper side wall is flat.

2. A fully permeable pavement structure suitable for large slopes according to claim 1, characterized in that: The interlayer (2) is laid on the soil base (1), and the interlayer (2) is composed of a steel mesh. The top surface of the load-bearing layer (3) is a slope structure and is laid on the top of the interlayer (2), and the load-bearing layer (3) is a graded crushed stone mixed with aggregates of different particle sizes in a certain proportion. The cushion layer (4) is laid on the top surface of the load-bearing layer (3), and the cushion layer (4) is paved with gravel and has a maximum particle size of 60 mm. The leveling layer (5) is laid on the top surface of the cushion layer (4), and the leveling layer (5) is paved with a mixture of coarse sand and stone chips.

3. A fully permeable pavement structure suitable for large slopes according to claim 2, characterized in that: The permeable surface layer (6) is laid on the top surface of the leveling layer (5), the top surface of the permeable surface layer (6) is arranged in an inclined manner, and the permeable surface layer (6) is made of a permeable asphalt material mixed with modified asphalt, slaked lime and fiber. The slope direction of the top surface of the permeable surface layer (6) is opposite to the slope direction of the top surface of the load-bearing layer (3).

4. A fully permeable pavement structure suitable for large slopes according to claim 3, characterized in that: A water storage tank (601) is provided on the permeable surface layer (6), a permeable cover plate (602) is provided on the top surface of the water storage tank (601), and a plurality of strip grooves are opened on the top of the permeable cover plate (602), and the water storage tank (601) is provided above the downstream baffle (803).

5. A fully permeable pavement structure suitable for large slopes according to claim 4, characterized in that: A fixed plate group (7) is provided on the load-bearing layer (3), and the fixed plate group (7) includes a plurality of strips (701), each of the strips (701) being in the shape of a strip plate, and the plurality of strips (701) are plug-connected to the load-bearing layer (3).

6. A fully permeable pavement structure suitable for large slopes according to claim 5, characterized in that: The bottom end of the drainage plate group (8) is plug-connected to the fixed plate group (7), and the cushion layer (4) is filled inside the drainage plate group (8).

7. A fully permeable pavement structure suitable for large slopes according to claim 6, characterized in that: The upstream baffle (801) is rectangular in shape, and a plurality of slots (804) matching the strips (701) are provided at the bottom of the upstream baffle (801), and the ends of the strips (701) are connected to the downstream baffle (803).

8. The fully permeable pavement structure suitable for large slopes according to claim 7, characterized in that: The bottom of the middle drainage plate (802) is provided with a plurality of holes (806) in the form of circular holes, and the bottom of the middle drainage plate (802) is provided with a plurality of slots 2 (805) matching the strip plates (701), and the plurality of middle drainage plates (802) are arranged in a linear array, and the heights of the plurality of middle drainage plates (802) are arranged in a gradually decreasing manner.

9. The fully permeable pavement structure suitable for large slopes according to claim 8, characterized in that: Its working method includes the following steps: S1, top flow blocking, blocking the water flow on the top flat road of the slope road surface in the cushion layer (4) below the flat road through the upstream baffle (801), and flowing into the soil base layer (1) below through the cushion layer (4); S2, middle diversion, a portion of the water flow on the slope road surface flows through the permeable surface layer (6) into the leveling layer (5) below, and the water flow is introduced into the permeable channel through multiple middle drainage plates (802) in the leveling layer (5); S3, bottom flow limiting, another part of the water flow on the slope road surface flows to the lower part on the surface of the permeable surface layer (6), and flows into the water storage tank (601) and flows into the leveling layer (5) below through the water storage tank (601); S4. When water flows continuously through multiple permeable channels onto the load-bearing layer (3), a portion of the water flows along the slope of the top surface of the load-bearing layer (3) to the lower part, which is opposite to the direction of the water flow on the top surface of the permeable surface layer (6) of the slope road surface, while the other portion of the water continues to flow through the load-bearing layer (3) into the soil base layer (1) below.

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