A rapid drainage structure for urban and rural roads to prevent waterlogging

Abstract

The present invention relates to a rapid drainage structure for urban and rural roads for preventing waterlogging, comprising a plurality of road segmentation units divided along the urban and rural roads toward a waterlogging point, the road segmentation units comprising a gently sloping road section in the upper half and a horizontal road section in the lower half, the road segmentation units being respectively provided with a road surface drain outlet and a roadside drain outlet, the road surface drain outlet comprising at least two rows of arc-shaped slit-type drain outlets arranged in a staggered and opposite manner. The present invention provides two types of drain outlets, one for the road surface and the other for the roadside, in each road segmentation unit. The road surface drain outlet primarily receives runoff from the gently sloping road surface, and substantially all rainwater is received and discharged through drainage diversion and multiple drainage rows at the drain outlets. Runoff from both sides and runoff generated on the horizontal road surface are rapidly discharged through the roadside drain outlets. The combination of the two types of drainage effectively solves the problem of rainwater runoff being unable to be quickly discharged during heavy rainfall during the flood season, thereby preventing waterlogging.

Description

Technical Field

[0001] The present invention relates to the field of urban and rural road construction, and in particular to an urban and rural road rapid drainage structure for preventing waterlogging, which is mainly suitable for drainage of urban and rural roads with a speed of less than 60 km / h. Background Art

[0002] In low-lying urban and rural areas, when there is heavy rainfall in a short period of time or long-term continuous rainfall, the low-lying areas will exceed the conventional drainage capacity due to the collection of surface runoff from all directions. The resulting excess runoff will form waterlogging points or areas after gathering, which will pose a serious threat to people's lives and property.

[0003] Roads are the primary source of surface runoff, making road drainage crucial for urban drainage. The reason most low-lying areas are prone to waterlogging is largely due to the inward drainage of surrounding roads. Because of the terrain, surrounding roads are generally downhill, and surface runoff often flows directly into low-lying areas along the road surface before it can reach drainage outlets on either side of the road. This prevents the water from being properly channeled, leading to regional waterlogging.

[0004] Therefore, to solve the problem of waterlogging in the region, we need to start with the drainage problem of the surrounding roads, ensure rapid drainage of the roads, and ensure the effective drainage of accumulated water, so as to reduce the drainage pressure in the waterlogged areas and solve the problem of waterlogging. Summary of the Invention

[0005] To solve the above problems, the present invention proposes a rapid drainage structure for roads in urban and rural areas prone to waterlogging. By reshaping the road terrain, the overall slope is slowed down, and the road is segmented into multiple road segment units. Centralized road surface drainage and auxiliary roadside drainage are respectively set in each road segment unit, so that rainwater runoff can be quickly discharged within each road segment unit, thereby solving the problem of excessive runoff gathering in low-lying areas to form waterlogging, alleviating the drainage pressure in urban and rural waterlogging areas from the source, and completely solving the problem of urban and rural waterlogging.

[0006] To achieve the above-mentioned purpose, the present invention provides a rapid drainage structure for urban and rural roads to prevent waterlogging, comprising a plurality of road segmentation units divided along the urban and rural roads toward the waterlogging point, the road segmentation unit comprising a gently sloping road section in the upper half and a horizontal road section in the lower half, the gradient of the gently sloping road section being less than 2%, the length ratio of the gently sloping road section to the horizontal road section being 5:4 to 2:1, a road surface drainage outlet and a roadside drainage outlet are respectively provided on the road segmentation unit, the road surface drainage outlet comprises at least two rows of arc-shaped slit-type drainage outlets arranged in a staggered manner, the arc-shaped slit-type drainage outlet comprises a filtering grid arranged on the road surface, stabilizing plates symmetrically arranged on both sides below the filtering grid, and a stabilizing plate connected to the road surface. The fixed grille on the outside of the stabilizing plate and the first drainage pipe arranged at the bottom, the fixed grille is buried in the asphalt concrete layer on the graded crushed stone layer of the urban and rural roads, the fixed grille reinforces and fixes the asphalt concrete layer by rivets, the filter grid includes horizontal grids and honeycomb grids arranged in sequence along the extension direction of the urban and rural roads, the roadside drainage outlet is arranged on the inner side of the curb of the horizontal road section, and a diversion slope is set on the road surface around the roadside drainage outlet, the roadside drainage outlet includes a large grille filter layer, a suspended matter separation layer, a purification layer, and a second drainage pipe arranged in sequence from top to bottom, the suspended matter separation layer includes a separation baffle and a suspended matter collection bag arranged on the lower side of the separation baffle.

[0007] Preferably, the length of the gently sloping road section is less than 400 meters on suburban roads or township roads, and less than 800 meters on city center roads.

[0008] Preferably, the first row of arc-shaped slit drain outlets is arranged at a distance of 1 to 2.5 meters from the junction of the gentle slope section and the horizontal section in the direction of extension of the horizontal section, and the vertical distance from the second row of arc-shaped slit drain outlets is 0.5 to 1.5 meters.

[0009] Preferably, the width of the arc-shaped slit drain outlet is 3-10 cm, the arc chord length of the arc-shaped slit drain outlet is 0.6-0.8 m, and the central angle of the arc-shaped slit drain outlet is 40°-100°.

[0010] Preferably, the arc-shaped slit-type drain outlets are evenly spaced side by side, with a spacing of 0.5 to 0.7 m.

[0011] Preferably, the total width of the horizontal grid is 1.2~3.5cm, and the grid gap width is 0.5~1cm; the aperture of the honeycomb grid is 0.4~0.8cm; the surfaces of the horizontal grid and the honeycomb grid are both uneven structures, and the height difference of the upper surface is 0.3~1.0cm; the thickness of the horizontal grid and the honeycomb grid are both 3~7cm, and the bottom grid pores are larger than the surface grid pores.

[0012] Preferably, the thickness of the stabilizing plate is 0.6-1.5 cm, and the laying width is 30-50 cm on each side.

[0013] Preferably, the grid aperture of the large grid filter layer is 0.6-1 cm×2-5 cm, and the grid plane direction is horizontal and inclined 20°-35° toward the curb side.

[0014] Preferably, the separation baffle is a double-layer grille structure that is interlocked with each other, and the two layers of grilles are relatively fixed in the middle by a stabilizing axis and can rotate relatively around the stabilizing axis.

[0015] Preferably, the purification layer is a stepped structure formed by obliquely and vertically laying non-woven bags, the total height of the purification layer is 5-10 cm, and the non-woven bags are filled with ceramsite and volcanic rock in a volume ratio of 3:2-5:4.

[0016] Based on the above technical solution, the advantages of the present invention are:

[0017] The rapid drainage structure for urban and rural roads of the present invention, by dividing the roads into sections, on the one hand, transforms the slope surface to make it gentler and reduce the runoff velocity; on the other hand, it diverts the surface runoff so that rainwater is almost completely drained away in each road section unit, greatly alleviating the amount of water collected in low-lying areas and fundamentally solving the problem of urban waterlogging.

[0018] In each road section unit, two types of drainage outlets are set up, namely the road surface drainage outlet and the roadside drainage outlet. The road surface drainage outlet mainly receives the runoff from the gently sloping road surface. Through the drainage outlet diversion and multi-row drainage, almost all the rainwater is received and discharged. The runoff on both sides and the runoff generated by the horizontal road surface are discharged through the roadside drainage outlet. The combination of the two drainage methods effectively solves the problem that rainwater runoff cannot be discharged quickly when the rainfall is heavy during the flood season, thereby preventing the occurrence of urban waterlogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of road segmentation units;

[0021] Figure 2 This is a schematic diagram of the rapid drainage structure for urban and rural roads;

[0022] Figure 3 This is a schematic diagram of the cross section of a road drainage outlet;

[0023] Figure 4 Schematic diagram of the filtering grid;

[0024] Figure 5Schematic diagram of the cross section of the roadside drainage outlet. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0026] The present invention provides a rapid drainage structure for urban and rural roads to prevent waterlogging. Figures 1 to 5 As shown, a preferred embodiment of the present invention is shown.

[0027] Due to the low-lying terrain of the waterlogged areas, most of the roads leading to the waterlogged areas are downhill sections. The present invention proposes to segment and reshape the slope of the road along the direction of the road leading to the waterlogged area. Figure 1 As shown, the road is divided into multiple road segment units 1 along the direction leading to the waterlogging point, and the road segment unit 1 includes a gently sloping road section 2 in the upper half and a horizontal road section 3 in the lower half.

[0028] The gently sloping road section 2 serves as the catchment area, with a slope of less than 2%. Its length is calculated based on the municipal stormwater main diameter and rainfall parameters. Preferably, the length of the gently sloping road section 2 is less than 400 meters on suburban or rural roads, and less than 800 meters on city center roads. The length ratio of the gently sloping road section 2 to the horizontal road section 3 is 5:4 to 2:1. The front end of the horizontal road section primarily receives runoff from the gently sloping road section, while the middle and rear sections ensure that runoff generated by the horizontal road surface itself can be quickly drained away.

[0029] like Figure 2 As shown, the road segment unit 1 is provided with a road surface drain outlet 5 and a roadside drain outlet 4. The road surface drain outlet 5 comprises at least two rows of staggered, relatively arranged arc-shaped slit drain outlets 6. Preferably, the first row of arc-shaped slit drain outlets 6 is located at the junction of the gently sloping road section 2 and the horizontal road section 3, extending 1 to 2.5 meters toward the horizontal road section 3, and is vertically spaced 0.5 to 1.5 meters from the second row of arc-shaped slit drain outlets 6.

[0030] The arc-shaped slit drain outlets 6 are generally arc-shaped. Their width is calculated based on rainfall during the flood season, typically ranging from 3 to 8 cm, with a maximum width of no more than 10 cm. The arc chord length of the arc-shaped slit drain outlets 6 is 0.6 to 0.8 m, and the central angle of the arc-shaped slit drain outlets 6 is 40° to 100°. The arc openings of the first row of arc-shaped slit drain outlets face away from the gently sloping road surface. The drain outlets are evenly spaced side by side, with a spacing of 0.5 to 0.7 m.

[0031] The second row of arc-shaped slit drains is also arc-shaped, opening in the opposite direction of the first row. They are staggered with the first row and have the same specifications. If the area experiences heavy rainfall during the flood season, the number of drains and the number of rows may be increased as appropriate.

[0032] Curved drains, while occupying the same floor space, are more efficient than conventional linear drains. Because they cover a larger area, they disperse road pressure and minimize impact on overall road stability. The curved openings of the first row of drains face away from the gentle slope. In addition to draining water, the edges of the drains also direct undischarged runoff into the second row of drains.

[0033] Specifically, taking a 3.5-meter-wide two-lane road as an example, the first row is set with 7 drainage outlets with a chord length of 0.6m and a central angle of 75°, and the horizontal spacing of the drainage outlets is 0.5m. The second row of 6 drainage outlets is set with a vertical spacing of 1m, and the spacing is the same as before.

[0034] The overall material of the arc-shaped gap-type drain outlet 6 is stainless steel, cast iron, etc., which has high hardness and toughness, is resistant to pressure and deformation, and has high tolerance. The surface is coated with hydrophobic paint to promote rapid drainage.

[0035] like Figure 3 As shown, the arc-shaped slit drain outlet 6 includes a filter grid 7 set on the road surface, stabilizing plates 8 symmetrically arranged on both sides below the filter grid 7, a fixed grille 9 connected to the outside of the stabilizing plates 8, and a first drainage pipe 11 set at the bottom. The first drainage pipe 11 is set at the bottom to lead to the municipal rainwater pipe. The depth of the first drainage pipe 11 should be set lower than that of a conventional slit drain outlet.

[0036] like Figure 4 As shown, the filtering grid 7 comprises horizontal grids 12 and honeycomb grids 13, arranged sequentially along the extension of the urban and rural roads. The total width of the horizontal grids 12 is 1.2-3.5 cm, with grid gaps of 0.5-1 cm. The aperture of the honeycomb grids 13 is 0.4-0.8 cm. Both the horizontal grids 12 and the honeycomb grids 13 have an uneven surface, with a height difference of 0.3-1.0 cm. The thickness of both the horizontal grids 12 and the honeycomb grids 13 is 3-7 cm, with the bottom grid pores larger than the surface grid pores. In addition to drainage function, road surface drain outlets must also ensure road surface stability. When runoff occurs on gently sloping roads after rainfall, most of the rainwater runoff is drained away through the horizontal grids at the front. As the runoff increases, large particles of road waste and other pollution are intercepted by the horizontal grids, and the runoff is drained away simultaneously through the horizontal grids and the honeycomb grids. The dual drain outlet structure of the horizontal grids and honeycomb grids ensures drainage efficiency while also meeting road surface stability requirements.

[0037] In order to ensure the stability of the road structure, stabilizing plates 8 of the same material with a thickness of 0.6~1.5cm are symmetrically arranged on both sides and both ends below the filtering grid structure, with a paving width of 30~50cm on both sides; fixed grids 9 are connected to both sides of the stabilizing plates 8, and the fixed grids 9 are buried in the asphalt concrete layer on the graded gravel layer of urban and rural roads. The fixed grids 9 reinforce and fix the asphalt concrete layer through rivets 10, which restricts the lateral movement of the concrete structure, and forms a good interlocking structure through paving and anchoring, which has a certain rigidity to diffuse the load above, thereby improving the bearing capacity and stability of the foundation.

[0038] As shown in Figure 5, the roadside drain outlet 4 is arranged on the inner side of the curb 15 of the horizontal road section 3. A diversion slope is set on the road surface around the roadside drain outlet 4. The roadside drain outlet 4 includes a large grid filter layer 14, a suspended matter separation layer, a purification layer 18, and a second drainage pipe 19 arranged in sequence from top to bottom. The suspended matter separation layer includes a separation baffle 16 and a suspended matter collection bag 17 arranged on the lower side of the separation baffle 16.

[0039] Since conventional roads are high in the middle and low on both sides, it is convenient for road runoff to flow to the roadside drain outlet 4. Therefore, in addition to draining most of the rainwater runoff on the gentle slope, the remaining horizontal road runoff will be discharged through the roadside drain outlet 4.

[0040] Specifically, the roadside drainage outlet 4 is set to three layers from top to bottom, the surface layer is a large grille filter layer 14, the grille aperture is 0.6~1cm×2~5cm, the aperture decreases toward the curb side, the grille plane direction is horizontal and slightly inclined 20°~35° toward the curb side of the road, which can filter large particles of garbage and collect them to one side of the drainage outlet without blocking the drainage outlet and affecting subsequent drainage.

[0041] A suspended solids separation layer is located 10-15 cm below the large grid filter layer 14. This layer features a separation baffle 16, a double-layered, interlocking grid structure. The two grid layers are fixed relative to each other at the center by a stabilizing axis and can rotate relative to each other around the axis. The grid apertures are 0.15-0.25 cm x 0.2-0.4 cm. As rainwater flows in, sediment is separated by the grid. Simultaneously, the grid rotates downward, and the friction between the two grid layers separates any adhering sediment and other suspended solids, which fall into a suspended solids collection bag 17 for periodic cleaning.

[0042] The third layer, the purification layer 18, consists of a mixture of ceramsite and volcanic rock in a specific ratio, placed in non-woven bags. These bags are laid vertically and obliquely, with a total height of 5 to 10 cm. This stepped structure increases water flow time and improves purification efficiency, providing preliminary purification of oil, heavy metal, and other pollutants. The non-woven bags are filled with ceramsite and volcanic rock in a volume ratio of 3:2 to 5:4.

[0043] A diversion slope is set on the road surface around the roadside drain outlet 4, and the roadside drain outlets 4 on both sides of the road surface drain outlet 5 are set with diversion terrain according to the water flow on the side of the road surface drain outlet 5, so as to guide the rainwater runoff that does not flow into the roadside drain outlet 5 into the roadside drain outlet 4.

[0044] The rapid drainage structure for urban and rural roads of the present invention, by dividing the roads into sections, on the one hand, transforms the slope surface to make it gentler and reduce the runoff velocity; on the other hand, it diverts the surface runoff so that rainwater is almost completely drained away in each road section unit, greatly alleviating the amount of water collected in low-lying areas and fundamentally solving the problem of urban waterlogging.

[0045] This invention provides two types of drainage outlets in each road segment: road surface and roadside. The road surface outlet primarily receives runoff from gently sloping roads. Through drainage diversion and multiple drainage channels, virtually all rainwater is collected and discharged. Runoff from both sides and horizontal road surfaces is discharged through the roadside outlet. This combination of two drainage methods effectively solves the problem of rainwater runoff not being quickly drained during heavy rainfall during the flood season, thereby preventing waterlogging.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention. They should all be included in the scope of the technical solution for protection of the present invention.

Claims

1. A rapid drainage structure for urban and rural roads to prevent waterlogging, characterized by: The invention comprises a plurality of road segmentation units (1) divided along an urban and rural road toward a waterlogging point, wherein the road segmentation unit (1) comprises a gently sloping road section (2) in the upper half and a horizontal road section (3) in the lower half, wherein the gradient of the gently sloping road section (2) is less than 2%, and the length ratio of the gently sloping road section (2) to the horizontal road section (3) is 5:4 to 2:1, and the road segmentation unit (1) is provided with a road surface drain outlet (5) and a roadside drain outlet (4), respectively. The road surface drain outlet (5) comprises at least two rows of arc-shaped slit-type drain outlets (6) arranged in a staggered manner, and the arc openings of the first row of arc-shaped slit-type drain outlets face away from the gently sloping road surface, and the opening direction of the second row of arc-shaped slit-type drain outlets is opposite to that of the first row of arc-shaped slit-type drain outlets, and the arc-shaped slit-type drain outlets (6) comprise a filtering grid (7) arranged on the road surface, a stabilizing plate (8) symmetrically arranged on both sides below the filtering grid (7), and a stabilizing plate (8) connected to the road surface. The fixed grid (9) outside the stabilizing plate (8) and the first drainage pipe (11) arranged at the bottom, the fixed grid (9) is buried in the asphalt concrete layer on the graded crushed stone layer of the urban and rural road, the fixed grid (9) reinforces and fixes the asphalt concrete layer by rivets (10), the filtering grid (7) includes a horizontal grid (12) and a honeycomb grid (13) arranged in sequence along the extension direction of the urban and rural road, the roadside drainage outlet (4) is arranged on the inner side of the curb (15) of the horizontal road section (3), and a diversion slope is set on the road surface around the roadside drainage outlet (4), the roadside drainage outlet (4) includes a large grid filter layer (14), a suspended matter separation layer, a purification layer (18), and a second drainage pipe (19) arranged in sequence from top to bottom, and the suspended matter separation layer includes a separation baffle (16) and a suspended matter collection bag (17) arranged on the lower side of the separation baffle (16).

2. The rapid drainage structure for urban and rural roads according to claim 1, characterized in that: The length of the gently sloping road section (2) is less than 400 meters on a suburban road or a township road, and less than 800 meters on a city center road.

3. The rapid drainage structure for urban and rural roads according to claim 1, characterized in that: The first row of arc-shaped slit-type drain outlets is arranged at a position 1 to 2.5 meters in the direction of extension from the gentle slope section (2) to the horizontal section (3) at the junction of the gentle slope section (2) and the horizontal section (3), and the vertical distance from the second row of arc-shaped slit-type drain outlets (6) is 0.5 to 1.5 meters.

4. The rapid drainage structure for urban and rural roads according to claim 1, characterized in that: The width of the arc-shaped slit-type drain outlet (6) is 3 to 10 cm, the arc chord length of the arc-shaped slit-type drain outlet (6) is 0.6 to 0.8 m, and the central angle of the arc-shaped slit-type drain outlet (6) is 40° to 100°.

5. The rapid drainage structure for urban and rural roads according to claim 4, characterized in that: The arc-shaped slit-type drain outlets (6) are evenly spaced side by side, with a spacing of 0.5 to 0.7 m.

6. The rapid drainage structure for urban and rural roads according to claim 1, characterized in that: The total width of the horizontal grid (12) is 1.2-3.5 cm, and the grid gap width is 0.5-1 cm; the aperture of the honeycomb grid (13) is 0.4-0.8 cm; the surfaces of the horizontal grid (12) and the honeycomb grid (13) are both uneven structures, and the height difference of the upper surface is 0.3-1.0 cm; the thickness of the horizontal grid (12) and the honeycomb grid (13) is 3-7 cm, and the bottom grid pores are larger than the surface grid pores.

7. The rapid drainage structure for urban and rural roads according to claim 1, characterized in that: The thickness of the stabilizing plate (8) is 0.6-1.5 cm, and the laying width is 30-50 cm on each side.

8. The rapid drainage structure for urban and rural roads according to claim 1, characterized in that: The grid aperture of the large grid filter layer (14) decreases toward the side of the curb (15), and the grid plane direction is horizontal and inclined at 20° to 35° toward the side of the curb (15).

9. The rapid drainage structure for urban and rural roads according to claim 1, characterized in that: The separation baffle (16) is a double-layer grille structure that is interlocked with each other. The two layers of grilles are relatively fixed in the middle by a stabilizing axis and can rotate relatively around the stabilizing axis.

10. The rapid drainage structure for urban and rural roads according to claim 1, characterized in that: The purification layer (18) is a stepped structure formed by obliquely and vertically laying non-woven bags, the total height of the purification layer (18) is 5 to 10 cm, and the non-woven bags are filled with ceramsite and volcanic rock in a volume ratio of 3:2 to 5:4.

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