Urban road underground permeation ditch suitable for sponge city
By designing underground infiltration trenches for urban roads and utilizing a combination of reinforced concrete trenches, infiltration layers, and filter layers, the shortcomings of urban road drainage facilities in terms of rainwater infiltration and purification have been solved. This has enabled efficient rainwater infiltration and purification, reduced the risk of urban flooding, and improved rainwater utilization efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU HIGHWAY KANCHA DESIGN CO LTD
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-10
AI Technical Summary
Existing urban road drainage facilities are inadequate in terms of rainwater infiltration and purification, and cannot meet the construction requirements of sponge cities.
An underground infiltration trench for urban roads was designed, comprising a reinforced concrete trench body, an internal infiltration layer and a filter layer. The infiltration layer is filled with large gravel and crushed stone, and the filter layer is filled with quartz sand and activated carbon. The combination structure of the water collection pipe and the inspection well enables efficient infiltration, filtration and collection of rainwater.
It improves rainwater infiltration and purification, reduces the risk of urban flooding, has a simple structure that is easy to maintain, reduces maintenance costs, and improves rainwater utilization efficiency.
Smart Images
Figure CN224106552U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sponge city construction technical field especially suitable for the city road underground infiltration ditch of sponge city. BACKGROUND
[0002] Sponge city is a modern city rainwater management and utilization concept, aims at improving the city rainwater infiltration, storage, purification and utilization capacity through simulating natural ecological system, reducing urban flood disaster, improving city water environment, realizes the sustainable utilization of water resources.
[0003] The traditional city road drainage system mainly is to rainwater fast and goes away, this kind of mode not only can not effectively utilize rainwater resources, still easily leads to urban waterlogging, sponge city concept emphasizes through natural and artificial measures combination, realizes rainwater's absorption, infiltration and slow release, effectively controls rainwater runoff, improves the standard of city drainage system, relieves urban waterlogging pressure, simultaneously realizes rainwater resource's efficient utilization, in sponge city construction, city road as the important infrastructure of city, its drainage and rainwater utilization function optimization is very important.
[0004] At present, the existing city road drainage facility has the deficiency in rainwater infiltration and purification, cannot fully meet the construction demand of sponge city.
[0005] In view of the above problem, we launch a kind of suitable for the city road underground infiltration ditch of sponge city. UTILITY MODEL CONTENTS
[0006] The utility model discloses a kind of suitable for the city road underground infiltration ditch of sponge city, to solve the technical problem in background art.
[0007] To achieve the above purpose, the utility model adopts the following technical scheme:
[0008] A kind of suitable for the city road underground infiltration ditch of sponge city, it include: ditch body, the ditch body is long strip, it is set along city road below vertically, the ditch body is made of reinforced concrete, infiltration layer, the infiltration layer is located inside ditch body, fill with the gravel and broken stone of larger particle size, filter layer, the filter layer is located above infiltration layer, fill with the mixture of quartz sand and activated carbon of smaller particle size, water collecting pipe, the water collecting pipe is set in the bottom of ditch body, connect with city rainwater collection pipe network, inspection well, the inspection well is set every certain distance along line in ditch body, with ditch body is communicated.
[0009] By setting up the combination of the ditch body, the infiltration layer, the filter layer, the water collecting pipe and the inspection well, efficient infiltration, filtration and collection of rainwater are realized, the long strip-shaped ditch body matches the layout under the urban road, ensuring the effective treatment of rainwater under the road, the gravel and the broken stone in the infiltration layer can quickly infiltrate and drain water, preventing well volume water, the quartz sand and the activated carbon in the filter layer can effectively filter the pollutants in the rainwater, improving the cleanliness of the rainwater, the water collecting pipe discharges the treated rainwater to the urban rainwater collection pipe network, ensuring the smooth flow of rainwater, the inspection well is convenient for regular inspection and maintenance, ensuring the long-term stable operation of the system, improving the rainwater management capacity of the city and reducing the risk of ground waterlogging and urban waterlogging.
[0010] In a preferred scheme, the bottom of the ditch body inner wall is equidistantly provided with water permeable holes, and the water permeable holes are communicated with the filter layer.
[0011] By setting up the water permeable holes, the accumulated water in the ditch body is allowed to flow into the filter layer, the water flow path is increased, uniform distribution of water is ensured, local water accumulation and blockage are prevented, and the stability and reliability of the system are increased.
[0012] In a preferred scheme, the particle size of the gravel in the infiltration layer ranges from 20mm to 50mm, and the particle size of the broken stone ranges from 10mm to 30mm.
[0013] By setting up mixed filling of gravel and broken stone with different particle sizes, a porous structure can be formed, ensuring rapid infiltration and good drainage performance of rainwater, the larger particle size gravel provides the main infiltration channel, and the smaller particle size broken stone fills the gap between the gravel, preventing silt from blocking the infiltration layer, prolonging the service life of the infiltration ditch and improving the infiltration efficiency of rainwater.
[0014] In a preferred scheme, the particle size of the quartz sand in the filter layer is 0.5mm-2mm, the particle size of the activated carbon is 0.5mm-1mm, the mixing ratio of the two is 3:1, and the thickness of the filter layer is 20cm-40cm.
[0015] By setting up the mixed layer of quartz sand and activated carbon, fine particulate matter and organic pollutants in rainwater can be effectively filtered and adsorbed, the smaller particle size of the quartz sand provides a larger surface area, which helps to filter suspended solids and silt, and the activated carbon has strong adsorption capacity, which can remove organic matter and odors in rainwater, improving the cleanliness of rainwater.
[0016] In a preferred scheme, the bottom of the ditch body is equidistantly fixedly connected with a connecting pipe, the top of the connecting pipe extends into the inside of the infiltration layer, and the bottom of the connecting pipe extends into the inside of the water collecting pipe.
[0017] The connection pipe ensures that the rainwater in the permeable layer can flow into the water collecting pipe uniformly, prevents local water accumulation and problems caused by water flow concentration, increases the drainage efficiency and reliability of the system, ensures smooth flow of rainwater, and effectively disperses water flow, especially in the case of large rainwater flow.
[0018] In a preferred scheme, the top of the inspection well is provided with an anti-theft, anti-slip and load-bearing well cover.
[0019] The anti-theft and anti-slip well cover can prevent the well cover from being stolen and pedestrians from slipping, ensuring the safety of the road, and the load-bearing well cover can bear the weight of vehicles and pedestrians, preventing the well cover from being damaged during use and improving the safety and practicality of the inspection well.
[0020] In a preferred scheme, the top of the trench body and on both sides of the inspection well are provided with through grooves at equal distances, and the through grooves are communicated with the inside of the trench body.
[0021] The through grooves are designed to allow rainwater to flow into the inside of the trench body uniformly, avoiding local water accumulation and problems caused by water flow concentration.
[0022] The urban road underground permeation trench suitable for a sponge city has the following advantages:
[0023] In the utility model, the combination of the trench body, the permeable layer, the filter layer, the water collecting pipe and the inspection well realizes efficient permeation, filtration and collection of rainwater, the long strip-shaped trench body matches the layout below the urban road, ensures effective treatment of rainwater below the road, the gravel and broken stones in the permeable layer can rapidly permeate and drain water, prevent well volume water, the quartz sand and activated carbon in the filter layer can effectively filter pollutants in rainwater, and improve the cleanliness of rainwater.
[0024] 1. Improve rainwater permeation capacity: the permeable layer can effectively increase the permeation amount of rainwater, make rainwater rapidly permeate into the ground, supplement groundwater, reduce surface runoff, and thus reduce the risk of urban waterlogging.
[0025] 2. Purify rainwater quality: the quartz sand and activated carbon in the filter layer can filter and adsorb rainwater, remove impurities, pollutants and part of harmful substances in rainwater, improve the water quality of rainwater, and are beneficial to subsequent use of rainwater.
[0026] 3. Simple structure, easy to maintain: the structure of the utility model is relatively simple, construction is convenient, and through the inspection well, the permeation trench can be easily inspected, cleaned and maintained, maintenance cost is reduced, and operation quality and use efficiency are greatly improved compared with traditional devices. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 A first perspective view schematic diagram of a city road underground permeable trench suitable for a sponge city is provided in the utility model.
[0028] Figure 2 A second perspective view schematic diagram of a city road underground permeable trench suitable for a sponge city is provided in the utility model.
[0029] Figure 3 A cross-sectional structure perspective view schematic diagram of a city road underground permeable trench suitable for a sponge city is provided in the utility model.
[0030] Figure 4 A left view cross-sectional view schematic diagram of a city road underground permeable trench suitable for a sponge city is provided in the utility model.
[0031] Figure 5 A Figure 4 Enlarged view of A in the middle.
[0032] In the drawings: 1, trench body; 2, permeable layer; 3, filter layer; 4, water collecting pipe; 5, inspection well; 6, connecting pipe; 7, well lid; 8, through groove; 9, water permeable hole. DETAILED DESCRIPTION
[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and indicated in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.
[0034] The city road underground permeable trench suitable for a sponge city disclosed by the utility model is mainly applied to the scene of sponge city construction.
[0035] Referring to Figures 1-5 A city road underground permeable trench suitable for a sponge city, comprising: a trench body 1, the trench body 1 is in a strip shape, is arranged longitudinally below a city road, the trench body 1 is made of reinforced concrete, a permeable layer 2, the permeable layer 2 is located inside the trench body 1, is filled with gravel and broken stone with larger particle size, a filter layer 3, the filter layer 3 is located above the permeable layer 2, is filled with a mixture of quartz sand and activated carbon with smaller particle size, a water collecting pipe 4, the water collecting pipe 4 is arranged at the bottom of the trench body 1, is connected with a city rainwater collecting pipe network, an inspection well 5, the inspection well 5 is arranged at intervals along the line of the trench body 1, is communicated with the trench body 1.
[0036] The embodiment: through the combination of the ditch body 1, the permeable layer 2, the filter layer 3, the water collecting pipe 4 and the inspection well 5, the efficient infiltration, filtration and collection of rainwater are realized, the long strip-shaped ditch body 1 matches the layout under the urban road, ensuring the effective treatment of rainwater under the road, the gravel and the broken stone in the permeable layer 2 can quickly infiltrate and drain water, preventing well volume water, the quartz sand and the activated carbon in the filter layer 3 can effectively filter the pollutants in the rainwater, improving the cleanliness of the rainwater, the water collecting pipe 4 discharges the treated rainwater to the urban rainwater collection pipe network, ensuring the smooth flow of rainwater, the inspection well 5 is convenient for regular inspection and maintenance, ensuring the long-term stable operation of the system, improving the rainwater management ability of the city and reducing the risk of ground waterlogging and urban waterlogging.
[0037] In a preferred embodiment, the bottom of the inner wall of the ditch body 1 is equally spaced to open a water permeable hole 9, and the water permeable hole 9 is communicated with the filter layer 3.
[0038] The embodiment: the water permeable hole 9 allows the accumulated water inside the ditch body 1 to flow into the filter layer 3, increases the path of water flow, ensures the uniform distribution of water, prevents local water accumulation and blockage, and increases the stability and reliability of the system.
[0039] In a preferred embodiment, the particle size range of the gravel in the permeable layer 2 is 20mm-50mm, and the particle size range of the broken stone is 10mm-30mm.
[0040] The embodiment: the mixed filling of gravel and broken stone with different particle sizes can form a porous structure, ensuring the rapid infiltration and good drainage performance of rainwater, the larger particle size gravel provides the main infiltration channel, and the smaller particle size broken stone fills the gap between the gravel, preventing silt from blocking the permeable layer 2, prolonging the service life of the infiltration ditch and improving the infiltration efficiency of rainwater.
[0041] In a preferred embodiment, the particle size of the quartz sand in the filter layer 3 is 0.5mm-2mm, the particle size of the activated carbon is 0.5mm-1mm, the mixing ratio of the two is 3:1, and the thickness of the filter layer 3 is 20cm-40cm.
[0042] The embodiment: the mixed layer of quartz sand and activated carbon can effectively filter and adsorb fine particulate matter and organic pollutants in rainwater, the smaller particle size of quartz sand provides a larger surface area, which helps to filter suspended solids and silt, and the activated carbon has strong adsorption capacity, which can remove organic matter and odors in rainwater, improving the cleanliness of rainwater.
[0043] In a preferred embodiment, the bottom of the ditch body 1 is equally spaced to fixedly connect a connecting pipe 6, the top of the connecting pipe 6 extends into the inside of the permeable layer 2, and the bottom of the connecting pipe 6 extends into the inside of the water collecting pipe 4.
[0044] The connecting pipe 6 ensures that the rainwater in the infiltration layer 2 can flow uniformly into the water collecting pipe 4, preventing problems caused by local water accumulation and water flow concentration, increasing the drainage efficiency and reliability of the system, ensuring smooth flow of rainwater, especially in the case of large rainwater flow, which can effectively disperse the water flow.
[0045] In a preferred embodiment, the top of each inspection well 5 is provided with an anti-theft, anti-slip and load-bearing well cover 7.
[0046] The anti-theft and anti-slip well cover 7 can prevent the well cover 7 from being stolen and pedestrians from slipping, ensuring the safety of the road, and the load-bearing well cover 7 can withstand the weight of vehicles and pedestrians, preventing the well cover 7 from being damaged during use, improving the safety and practicality of the inspection well 5.
[0047] In a preferred embodiment, a through groove 8 is equally spaced on the top of the ditch body 1 on both sides of the inspection well 5, and the through groove 8 is in communication with the inside of the ditch body 1.
[0048] The design of the through groove 8 allows rainwater to flow uniformly into the inside of the ditch body 1, avoiding problems caused by local water accumulation and water flow concentration.
[0049] Working principle: In use, rainwater enters the inside of the ditch body 1 through the through groove 8, and then flows into the filter layer 3 through the water permeable hole 9, is filtered by the quartz sand and activated carbon in the filter layer 3 to remove small impurities and harmful substances, and then rapidly infiltrates through the gravel and crushed stone in the infiltration layer 2 to prevent impurities such as soil from clogging the ditch body 1. The filtered rainwater enters the water collecting pipe 4 through the connecting pipe 6, and the water collecting pipe 4 delivers the rainwater to the urban rainwater collection pipe network. The water collecting pipe 4 delivers the treated rainwater to the urban rainwater pipe network, reducing the risk of urban waterlogging and waterlogging. Inspection wells 5 are provided along the ditch body 1 at certain intervals, and the design of the well cover 7 ensures the safety of pedestrians and vehicles. The operator can enter the inside of the ditch body 1 through the inspection well 5 to check and clean the impurities in the infiltration layer 2 and the filter layer 3, ensuring the normal operation of the infiltration ditch. The infiltration layer 2 can effectively increase the infiltration amount of rainwater, allowing rainwater to quickly infiltrate into the ground, replenish groundwater, and reduce surface runoff, thereby reducing the risk of urban waterlogging. The quartz sand and activated carbon in the filter layer 3 can filter and adsorb rainwater, removing impurities, pollutants and some harmful substances in the rainwater, improving the water quality of the rainwater, and facilitating the subsequent use of the rainwater.
[0050] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto. The replacement can be a replacement of part of the structure, device, method step, or a complete technical solution. According to the technical solution and the inventive concept of the present application, equivalent replacement or change should be covered in the protection scope of the present application.
Claims
1. A city road underground infiltration ditch suitable for sponge city, characterized in that, Include: The ditch body (1) is long strip-shaped, longitudinally arranged under the urban road, and made of reinforced concrete; The permeable layer (2) is located inside the ditch body (1) and filled with gravel and broken stone with large particle size; The filter layer (3) is located above the permeable layer (2) and filled with quartz sand and activated carbon with small particle size; The water collecting pipe (4) is arranged at the bottom of the ditch body (1) and connected with the urban rainwater collecting pipe network; The inspection well (5) is arranged at a certain distance along the ditch body (1) and communicated with the ditch body (1).
2. The underground permeable trench for urban roads of a sponge city according to claim 1, characterized in that, The water-permeable holes (9) are equidistantly arranged at the bottom of the inner wall of the ditch body (1) and communicated with the filter layer (3).
3. The underground permeable trench for urban roads of a sponge city according to claim 1, characterized in that, The particle size of the gravel in the permeable layer (2) ranges from 20mm to 50mm, and the particle size of the broken stone ranges from 10mm to 30mm.
4. The underground permeable trench for urban roads of a sponge city according to claim 1, characterized in that, The particle size of the quartz sand in the filter layer (3) is 0.5mm-2mm, and the particle size of the activated carbon is 0.5mm-1mm, and the thickness of the filter layer (3) is 20cm-40cm.
5. The underground infiltration trench for urban roads of a sponge city according to claim 1, characterized in that, The connecting pipes (6) are equidistantly fixedly connected to the bottom of the ditch body (1), the top of the connecting pipes (6) extends into the inside of the permeable layer (2), and the bottom of the connecting pipes (6) extends into the inside of the water collecting pipe (4).
6. The underground permeable trench for urban roads of a sponge city according to claim 1, characterized in that, The top of the inspection well (5) is provided with the well lid (7) which is anti-theft, anti-skid and has a certain bearing capacity.
7. The underground permeable trench for urban roads of a sponge city according to claim 1, characterized in that, The through grooves (8) are equidistantly arranged at the top of the ditch body (1) and located on both sides of the inspection well (5) and communicated with the inside of the ditch body (1).