A sponge city landscape road
By setting up drainage chambers, outlet pipes, curbs, and water guide holes in the sponge city landscape roads, a multi-level drainage system is formed, which solves the problem of water backflow caused by the lack of isolation between the water storage tank and the road surface and green belt, and achieves a highly efficient layered drainage effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG ENG CONSULTING CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-06-09
AI Technical Summary
In existing sponge city landscape roads, there is no isolation between the water storage tank and the road surface and green belt, which makes it easy for water to flow back to the road surface, resulting in poor drainage reliability.
A multi-level drainage system is formed by setting up drainage chambers, outlet pipes, curb strips, and water guide holes between the road surface and the green belt. The system avoids water backflow through physical isolation and guiding design, and achieves layered drainage by utilizing height differences and sloping water guides.
It effectively prevents rainwater backflow, ensures drainage reliability, realizes rainwater collection and infiltration, and improves drainage efficiency.
Smart Images
Figure CN224338051U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of urban drainage, and in particular to a sponge city landscape road. Background Technology
[0002] Sponge city is a new generation of urban stormwater management concept, referring to a city's ability to adapt to environmental changes and cope with natural disasters caused by rainwater, much like a sponge. Landscape roads, due to their narrow surface and frequent greenbelt coverage, often present challenges in implementing urban drainage systems. Therefore, they need to store water themselves or drain it into the greenbelt to cope with rainwater variations. For example, Chinese utility model patent CN212533585U discloses a sponge city landscape road, specifically including a road surface, rainwater storage modules, and greenbelts. Water from the road surface enters a storage tank through permeable bricks and further flows into the greenbelt through infiltrative plates. However, because there are no barriers between the storage tank and the road surface, or between the greenbelt and the road surface, the stored water easily flows back to the road surface when it reaches a certain level, leading to water accumulation and poor drainage reliability. Utility Model Content
[0003] The purpose of this invention is to provide a sponge city landscape road. This invention effectively isolates the road surface from the water storage area and the green belt by setting a downward-facing drainage chamber and incorporating curb strips, preventing water backflow and ensuring reliable drainage.
[0004] The technical solution of this utility model is as follows: A sponge city landscape road includes a roadbed set between green planting belts, a road surface on the top of the roadbed, and the road surface being higher than the green planting belts; multiple drainage chambers are provided on the side strips of the roadbed, and water outlet pipes extending into the green planting belts are provided on the side of the drainage chambers; the side edge of the roadbed has a curb strip higher than the road surface, and water guide holes are provided on the curb strip, with the water inlet end of the water guide hole corresponding to the surface layer of the green planting belt and the water outlet end corresponding to the middle layer of the green planting belt.
[0005] In the aforementioned sponge city landscape road, the drainage cavity is provided with an installation seat, and the installation seat is provided with a matching rainwater grate.
[0006] In the aforementioned sponge city landscape road, the top surface of the rainwater grate is level with or lower than the road surface.
[0007] In the aforementioned sponge city landscape road, the rain grate includes a main body, an inlet on the main body, and multiple rotatably connected guide blades on the inlet.
[0008] In the aforementioned sponge city landscape road, the inner surface of the drainage cavity has a sheet lining.
[0009] In the aforementioned sponge city landscape road, the road surface is made of plastic or concrete.
[0010] In the aforementioned sponge city landscape road, the water outlet pipe is arranged horizontally and its inner end is higher than the bottom surface of the drainage cavity.
[0011] In the aforementioned sponge city landscape road, the top of the curb strip is provided with a water storage slope that is inclined towards the green planting belt. The top of the water storage slope is higher than the road surface, and the bottom of the water storage slope corresponds to the middle layer of the green planting belt. The inlet end of the water guide hole is located at the top of the water storage slope, and the outlet end of the water guide hole is located at the bottom of the water storage slope.
[0012] Compared with existing technologies, this invention allows rainwater to enter the drainage chamber through the road surface during rainy weather. The drainage chamber can accumulate rainwater, which is then promptly discharged through the outlet pipe to the bottom depth of the green planting belt. Because the drainage chamber is set downwards, it forms a separation between the roadbed and the road surface, making it difficult for rainwater in the drainage chamber to flow back to the road surface. When too much rainwater accumulates on the surface of the green planting belt, the curb acts as a separator to prevent it from flowing back to the road surface. Furthermore, the drainage holes can guide the water flowing back from the surface of the green planting belt to the middle layer and below of the green planting belt, resulting in excellent drainage performance. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This is a cross-sectional structural diagram of the present invention.
[0015] The markings in the attached diagram are as follows: 1. Roadbed; 2. Road surface; 3. Green planting belt; 4. Drainage chamber; 5. Water outlet pipe; 6. Roadside curb; 7. Water storage slope; 8. Mounting base; 9. Rain grate; 10. Main body; 11. Water inlet; 12. Guide blade; 14. Water guide hole. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.
[0017] Example: A sponge city landscape road, as shown in the attached image. Figure 1 and attached Figure 2As shown, the roadbed includes a porous concrete subgrade 1 laid between green planting belts 3. The subgrade is used to raise the top paving surface and has a porous skeleton structure, combining strength and permeability to support rainwater infiltration. A plastic or concrete road surface 2 is laid on top of the subgrade 1 according to the road load requirements. The road surface 2 is higher than the green planting belts 3 to prevent rainwater backflow. A pit is pre-reserved on the side of the subgrade 1, and a crushed stone cushion layer is laid in the pit to form a drainage cavity 4. An opening is pre-reserved on the side of the drainage cavity 4 to connect to a water outlet pipe 5 extending outwards into the green planting belts 3. The interface is sealed with cement. The side edge of the roadbed 1 has a curb strip 6 that is higher than the road surface. Water guide holes 14 are opened on the curb strip 6. The inlet end of the water guide hole 14 corresponds to the surface layer of the green planting strip 3, and the outlet end of the water guide hole 14 corresponds to the middle layer of the green planting strip 3. A mounting base 8 is formed on the drainage cavity 4 by concrete pouring, and a matching rain grate 9 is fitted onto the mounting base 8. The top surface of the rain grate 9 is level with or lower than the road surface 2 to ensure that water from the road surface can fully enter the rain grate, reducing water accumulation. The rain grate 9 includes a metal body 10, on which are... The inlet 11 has multiple parallel guide vanes 12 rotatably connected to it via a shaft. The guide vanes face the road surface, and the gaps between them can block debris. When the rainwater flow changes, the guide vanes can be pushed by the water flow to form a corresponding angle, adapting to the flow changes and avoiding obstruction in the water flow path, thus improving drainage efficiency. The inner surface of the drainage chamber 4 is lined with smooth HDPE sheet, reducing the roughness coefficient of the drainage chamber and thus increasing the water flow velocity. The outlet pipe 5 is arranged horizontally, with its inner end higher than the bottom surface of the drainage chamber 4, avoiding... All water flow is directed to the green planting belt, and the water storage capacity of the green planting belt is balanced by the water storage function of the drainage chamber. The top of the curb 6 is provided with a water storage slope 7 that is inclined towards the green planting belt 3. The top of the water storage slope 7 is higher than the road surface 2, and the bottom of the water storage slope 7 corresponds to the middle layer of the green planting belt 3. The water inlet of the water guide hole 14 is set at the top of the water storage slope 7, and the water outlet of the water guide hole 14 is set at the bottom of the water storage slope 7. The setting of the water storage slope increases the maximum water storage capacity of the surface layer on one side of the green planting belt, and at the same time makes the opening of the water guide hole tilted upward, which is conducive to the water flow.
[0018] Working principle: When it rains, the rainwater first falls on the road surface 2, which is higher than the green planting belt 3. Due to the height difference between the road surface 2 and the green planting belt 3, a physical isolation is formed, which can prevent the rainwater from the green planting belt 3 from flowing back to the road surface. The rainwater flows along the road surface 2 to both sides and enters the drainage chamber 4 through the rain grate 9, which is level with or slightly lower than the road surface. The guide blades 12 of the rain grate 9 can rotate with the angle of the water flow, which can not only block debris, but also follow the direction of water flow and improve the water intake efficiency.
[0019] After rainwater enters the drainage chamber 4, the smooth inner lining of the chamber reduces water flow resistance and accelerates rainwater transport. The outlet pipe 5 on the side of the drainage chamber 4 is horizontally arranged with its inner end higher than the bottom surface of the drainage chamber 4. This design allows the drainage chamber 4 to first accumulate a certain amount of rainwater, and then slowly guide the rainwater into the bottom depth of the green planting belt 3 through the outlet pipe 5, avoiding large-scale drainage in a short period of time that could cause water accumulation in the green planting belt 3.
[0020] When there is excessive rainwater on the surface of the green planting belt 3, the curb 6, which is higher than the road surface 2, forms a second isolation barrier to prevent rainwater from flowing back to the road surface. The water storage slope 7 at the top of the curb 6 can guide the surface rainwater of the green planting belt 3 to flow into the water guide hole 14. The inlet end of the water guide hole 14 is located at the top of the water storage slope 7, and the outlet end is connected to the middle layer of the green planting belt 3, so that the surface rainwater is discharged into the middle layer of soil through the water guide hole 14, realizing layered drainage and avoiding surface water accumulation.
[0021] By utilizing the height difference between the road surface 2 and the green planting belt 3, the water storage and drainage design of the drainage chamber 4 and the outlet pipe 5, and the backflow prevention structure of the curb strip 6 and the water guide hole 14, a multi-level drainage system is formed, which not only realizes the collection and infiltration of rainwater, but also prevents rainwater backflow through physical isolation and guiding design, thus ensuring drainage reliability.
[0022] The above embodiments merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. Furthermore, in these embodiments, "up," "down," "left," "right," "front," and "back" represent relative positions only, not absolute positions. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A sponge city landscape road, characterized in that: The roadbed (1) is set between the green planting belts (3), and a road surface (2) is provided on the top of the roadbed (1), which is higher than the green planting belts (3). Multiple drainage chambers (4) are provided on the side of the roadbed (1), and water outlet pipes (5) extending into the green planting belts (3) are provided on the side of the drainage chambers (4). The side edge of the roadbed (1) has a curb strip (6) that is higher than the road surface. Water guide holes (14) are provided on the curb strip (6). The water inlet of the water guide hole (14) corresponds to the surface of the green planting belt (3), and the water outlet of the water guide hole (14) corresponds to the middle layer of the green planting belt (3).
2. The sponge city landscape road according to claim 1, characterized in that: The drainage cavity (4) is provided with a mounting base (8), and the mounting base (8) is provided with a matching rainwater grate (9).
3. The sponge city landscape road according to claim 2, characterized in that: The top surface of the rain grate (9) is level with or lower than the road surface (2).
4. The sponge city landscape road according to claim 2, characterized in that: The rain grate (9) includes a main body (10), an inlet (11) on the main body (10), and multiple rotatably connected guide vanes (12) on the inlet (11).
5. The sponge city landscape road according to claim 1, characterized in that: The inner surface of the drainage cavity (4) is lined with a plate.
6. The sponge city landscape road according to claim 1, characterized in that: The road surface (2) is made of plastic or concrete.
7. The sponge city landscape road according to claim 1, characterized in that: The water outlet pipe (5) is arranged horizontally and its inner end is higher than the bottom surface of the water chamber (4).
8. The sponge city landscape road according to claim 1, characterized in that: The curb (6) has a water storage slope (7) that slopes towards the green planting belt (3) at the top. The top of the water storage slope (7) is higher than the road surface (2), and the bottom of the water storage slope (7) corresponds to the middle layer of the green planting belt (3). The water inlet of the water guide hole (14) is located at the top of the water storage slope (7), and the water outlet of the water guide hole (14) is located at the bottom of the water storage slope (7).