CN114855930B - Sponge urban road for rainwater accumulation and reuse - Google Patents
Sponge urban road for rainwater accumulation and reuse Download PDFInfo
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- CN114855930B CN114855930B CN202210492227.7A CN202210492227A CN114855930B CN 114855930 B CN114855930 B CN 114855930B CN 202210492227 A CN202210492227 A CN 202210492227A CN 114855930 B CN114855930 B CN 114855930B
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- 238000009825 accumulation Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 94
- 238000001914 filtration Methods 0.000 claims abstract description 37
- 238000011010 flushing procedure Methods 0.000 claims abstract description 29
- 238000005192 partition Methods 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 9
- 238000005086 pumping Methods 0.000 claims abstract description 9
- 230000007774 longterm Effects 0.000 claims abstract description 8
- 239000011384 asphalt concrete Substances 0.000 claims description 69
- 239000004567 concrete Substances 0.000 claims description 32
- 239000004568 cement Substances 0.000 claims description 17
- 239000002689 soil Substances 0.000 claims description 13
- 239000011449 brick Substances 0.000 claims description 11
- 239000004575 stone Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000004746 geotextile Substances 0.000 claims description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000013049 sediment Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 230000008901 benefit Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000012466 permeate Substances 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011380 pervious concrete Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005316 response function Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000005068 transpiration Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C1/00—Design or layout of roads, e.g. for noise abatement, for gas absorption
- E01C1/002—Design or lay-out of roads, e.g. street systems, cross-sections ; Design for noise abatement, e.g. sunken road
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a sponge urban road for rainwater accumulation and recycling, which belongs to the technical field of sponge cities, wherein a sponge pool for collecting rainwater is arranged at the lower parts of green belts and boulevards, a plurality of layers of regenerated aggregate reverse filtration layers with particle sizes from large to small are arranged in the sponge pool from top to bottom, the rainwater is filtered layer by layer through the reverse filtration layers, a reservoir for storing the rainwater is arranged at the lower part of a sidewalk, the rainwater collected by the sponge pool is stored by the reservoir, a water body stored by the reservoir is taken by a water pumping device, the sponge pool is separated from the reservoir by a partition wall, the lowest part of the partition wall is a water permeable wall, and a flushing device is arranged in the water permeable wall to prevent the water permeable wall from being blocked due to long-term filtration, thereby prolonging the service life, realizing the collection and recycling of urban rainwater resources and reducing the later maintenance.
Description
Technical Field
The invention belongs to the technical field of sponge cities, and particularly relates to a sponge urban road for rainwater accumulation and recycling.
Background
In recent years, expert scholars have proposed the concept of sponge cities, namely, the excess rainwater in the rainy period is accumulated and utilized in the arid period. The method has the advantages that the method is practical in eastern cities in China, good effects are achieved, certain defects exist, for example, sediment is often carried in rainwater, key structural components for rainwater collection can be blocked for a long time, and the project is placed underground and is inconvenient to overhaul and maintain. The water resources in China are unevenly distributed, particularly in northwest regions of China, the space-time distribution of the water resources is extremely uneven, and the development of economy is hindered, so that the construction of sponge cities in northwest regions of China has great economic and social values. The wind sand in northwest areas is large, the evaporation is strong, more sediment is carried in the rainwater, and the mode of constructing the eastern sponge city is obviously unreasonable, so that on one hand, the frequent blockage of key components for rainwater collection can be caused, the maintenance is inconvenient, and on the other hand, the heat island effect of the city can not be relieved, and the social benefit is not obvious. Therefore, a sponge urban road suitable for regions with large sand storm and strong evaporation in northwest China is urgently needed.
Disclosure of Invention
In view of the above, in order to solve the problems that the key components for collecting rainwater in the conventional sponge urban road are frequently blocked due to more sediment, the heat island effect of the city cannot be relieved, and the social benefit is not obvious, it is necessary to provide a sponge urban road for accumulating and recycling rainwater, so as to solve the problems.
In order to achieve the above object, the present invention is realized by the following technical scheme:
sponge urban road that rainwater was accumulated and was recycled includes road bed and lays the urban road on road bed upper portion, its characterized in that: the urban road comprises a pavement, a green belt, a pavement and a boulevard which are sequentially arranged from the center of the road to two sides, wherein sponge pools for collecting rainwater are arranged at the lower parts of the green belt and the boulevard, a plurality of layers of regenerated aggregate reverse filtration layers with the particle sizes from large to small are arranged in the sponge pools from top to bottom, planting layers of the green belt and the boulevard are paved at the upper part of the uppermost layer of the regenerated aggregate reverse filtration layer, a municipal gallery is arranged at the lower part of the pavement, a reservoir for storing rainwater is arranged at the lower part of the municipal gallery, and water stored by the reservoir is taken by water pumping equipment;
The sponge pool is separated from the reservoir by the partition wall, the lowest part of the partition wall is a permeable wall, and a flushing device is arranged in the permeable wall to prevent the blocking of the permeable wall caused by long-term filtration.
As a further description of the above technical solution:
The regenerated aggregate reverse filtering layer is provided with four layers, the particle size of a filter material of the regenerated aggregate reverse filtering layer is 20-31.5mm, 10-20mm, 5-10mm and 1.18-2.36mm in sequence, and a layer of geotextile is paved at the joint of the uppermost regenerated aggregate reverse filtering layer and the planting layer.
As a further description of the above technical solution:
The roadway comprises a motor vehicle lane and a slow roadway which are sequentially arranged;
the motor vehicle lane comprises a first coarse grain type permeable asphalt concrete layer, a middle grain type asphalt concrete layer and a first coarse grain type cement concrete layer which are sequentially arranged from top to bottom; the slow-moving channel comprises a second coarse-grain permeable asphalt concrete layer and a second coarse-grain cement concrete layer which are sequentially arranged from top to bottom; the pavement comprises a third coarse grain type permeable asphalt concrete layer, a middle grain type permeable asphalt concrete layer and a third coarse grain type cement concrete layer which are sequentially arranged from top to bottom.
As a further description of the above technical solution:
The thickness of the first coarse-grain permeable asphalt concrete layer is 4-6cm, the thickness of the medium-grain asphalt concrete layer is 4-6cm, and the thickness of the first coarse-grain cement concrete layer is 6-10cm; the paving thickness of the slow-moving channel is 35-45cm, wherein the thickness of the second coarse-grain permeable asphalt concrete layer is 10-15cm; the pavement is paved with 30-40cm thickness, wherein the thickness of the third coarse grain type permeable asphalt concrete layer is 10-15cm, and the thickness of the middle grain type permeable asphalt concrete layer is 4-6cm.
As a further description of the above technical solution:
The water stabilizing layers of the concrete used in the concrete layer are all larger than 30cm, the porosity of the coarse-grain permeable asphalt concrete layer is 15-25%, and the porosity of the medium-grain permeable asphalt concrete layer is 5-10%.
As a further description of the above technical solution:
The two sides of the green belt are paved with first curbs, the side, close to the sidewalk, of the boulevard is paved with second curbs, the first curbs and the second curbs are made of permeable materials, and permeable bricks are paved on the upper portion of the boulevard.
As a further description of the above technical solution:
The embedded depth of the first road side stone is slightly larger than the thickness of the permeable asphalt concrete layer paved on the slow-moving pavement and the sidewalk, and the overground part of the first road side stone is provided with permeable holes; the embedded depth of the second curbstone is slightly larger than the thickness of the permeable asphalt concrete layer paved by the sidewalk, and the top of the second curbstone is flush with the pavement of the sidewalk.
As a further description of the above technical solution:
The water permeable wall is prefabricated by water permeable concrete and reinforced concrete which are arranged in a crossing way, the flushing device comprises a pressure pump and a flushing main pipe, one end of the flushing main pipe is connected with the pressure pump, and the other end of the flushing main pipe extends to the inside of the water permeable wall; the washing main pipe is provided with washing holes at the permeable concrete position of the permeable wall.
As a further description of the above technical solution:
The planting layer is paved with soil, the upper surface of the soil is slightly lower than the pavement of the slow-moving pavement and the sidewalk, and the thickness of each of the planting layer and the recycled aggregate reverse filtering layer is 40-60cm.
As a further description of the above technical solution:
the gradient of the pavement and the pavement is 1-2% in the direction from the pavement to the sponge pools on the two sides.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. According to the invention, sponge pools are arranged at the lower parts of green belts and a boulevard, rainwater on a road surface is collected, a plurality of layers of recycled aggregate reverse filtration layers with particle sizes from large to small are arranged in the sponge pools from top to bottom, multistage filtration is carried out on the sediment, municipal galleries are arranged at the lower parts of the sidewalks, reservoir for storing the rainwater is arranged at the lower parts of the municipal galleries, the sponge pools and the reservoir are separated by a partition wall, the lowest part of the partition wall is a permeable wall, and a flushing device is arranged in the permeable wall. The multistage filtering device has the advantages that the multistage filtering is carried out on sediment in the rainwater while the rainwater is collected in a large quantity as much as possible, the flushing device is used for flushing after long-term operation, the scrapping caused by the loss of structural functions after long-term operation is prevented, the service life is prolonged, and the later maintenance is reduced.
2. According to the invention, the permeable bricks are paved on the boulevard, so that the permeable bricks absorb and retain water in rainy seasons, and the water is emitted in dry seasons, so that the surface temperature and humidity can be effectively regulated, and the urban heat island effect can be relieved. The pavement and the pavement of the pavement are paved with permeable concrete, when the rainfall is large or the rainfall time is long, a large amount of runoffs can enter the sponge pool structure through the pavement to be correspondingly stored, and meanwhile, the pavement and the pavement can store a part of water body, so that the surface temperature and the surface humidity can be adjusted. When the runoff quantity generated by rainfall exceeds the maximum water storage quantity of the sponge pool, rich rainwater enters the reservoir below the sidewalk for secondary accumulation and storage after being filtered by each layer of coarse and fine aggregate, and the rainwater accumulated in the reservoir is pumped out by pumping equipment in arid high-temperature seasons for urban dedusting, cooling and greening water so as to relieve urban water pressure and solve the problems of insufficient total regional water resources and the like.
3. The invention realizes large-area collection and cyclic utilization of rainfall runoffs in urban areas, and long-term changes of water resources in urban areas form precipitation-evaporation (transpiration) -transportation and conversion of water vapor in the areas of precipitation, and the ecology and climate of the areas are effectively improved.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic drawing showing a cross-sectional structure of the present invention;
FIG. 3 is a schematic illustration of the cross-sectional position of the present invention;
FIG. 4 is a schematic view of an installation position of a water intake device according to an embodiment of the present invention;
FIG. 5 is a schematic view of section A-A of FIG. 3 in accordance with the present invention;
FIG. 6 is a schematic view of section B-B of FIG. 3 in accordance with the present invention;
FIG. 7 is a schematic view of section C-C of FIG. 3 in accordance with the present invention;
FIG. 8 is a schematic view of a flushing device according to the present invention;
fig. 9 is a schematic view of the installation position of the flushing main pipe in the present invention.
In the figure: 1. roadbed; 2. urban roads; 21. a motor vehicle lane; 211. a first coarse-grained water permeable asphalt concrete layer; 212. a medium-sized asphalt concrete layer; 213. a first coarse-grained cement concrete layer; 22. a travelator; 221. a second coarse-grained water permeable asphalt concrete layer; 222. a second coarse-grained cement concrete layer; 23. a green belt; 231. a first curb stone; 232. a second kerb; 24. sidewalk; 241. a third coarse-grained water permeable asphalt concrete layer; 242. a medium-grain permeable asphalt concrete layer; 243. a third coarse-grained cement concrete layer; 25. a boulevard; 251. planting a layer; 3. a sponge pool; 31. partition walls; 311. a water permeable wall; 4. a reservoir; 5. a flushing device; 51. a pressure pump; 52. flushing a main pipe; 521. flushing the hole; 6. municipal corridor
; 7. Pumping equipment; 71. a water pump; 72. a water inlet pipe; 73. and a water outlet pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 9, the present invention provides a technical solution:
The sponge urban road for rainwater accumulation and recycling comprises a roadbed 1 and an urban road 2 paved on the upper part of the roadbed 1, wherein the urban road 2 comprises a roadway, a green belt 23, a sidewalk 24 and a boulevard 25 which are sequentially arranged from the center of the road to two sides, sponge ponds 3 for collecting rainwater are arranged on the lower parts of the green belt 23 and the boulevard 25, a plurality of layers of recycled aggregate reverse filtration layers with the particle size from large to small are arranged in the sponge ponds 3 from top to bottom, the recycled aggregate is preferably construction waste and is prepared by crushing, a planting layer 251 of the green belt 23 and the boulevard 25 is paved on the upper part of the uppermost recycled aggregate reverse filtration layer, the planted plant species select shrubs with developed root systems and play the roles of noise reduction, dust fall and environment beautification, a municipal corridor 6 is arranged on the lower part of a pavement 24, a reservoir 4 for storing rainwater is arranged on the lower part of the municipal corridor 6, the height of the reservoir 4 is preferably 0.75-1.5m, and the water body of the reservoir 4 is taken by a pumping device 7;
as shown in fig. 3, the sponge pool 3 is separated from the reservoir 4 by a partition wall 31, a water permeable wall 311 is arranged at the lowest part of the partition wall 31, and a flushing device 5 is arranged in the water permeable wall 311 and used for flushing the water permeable wall 311 to prevent the water permeable wall 311 from being blocked due to long-term filtration.
Through setting up sponge pond 3 in the lower part on greenbelt 23 and boulevard 25 for the rainwater on the deposit road, the rainwater is filtered the back through the reverse filtration layer of multilayer regeneration aggregate, and silt content is less, hardly blocks up the wall 311 that permeates water, and can also wash the wall 311 through washing unit 5 after long-term operation, avoids blocking up. If the rainfall is small, the rainwater collected by the sponge pool 3 can be directly stored in the pool, if the rainfall is large, the rainwater can be stored in the reservoir 4 through the water permeable wall 311, and when water is needed, the rainwater can be taken out through the water pumping device 7. In the drought period, the sponge pool 3 and the reservoir 4 exchange water through the permeable wall 311, so that the water is partially evaporated on the surfaces of the green belt 23 and the boulevard 25, and the urban heat island effect can be weakened.
As shown in fig. 4, in a preferred embodiment, the water pumping device 7 includes a water pump 71, a water inlet pipe 72 is installed at the lower part of the water pump 71, the water inlet end of the water inlet pipe 72 extends into the reservoir 4, a water outlet pipe 73 is installed at the upper part of the water pump 71, the height of the reservoir 4 is 1.0m, the width is equal to the width of the sidewalk 24, an ultrasonic liquid level meter is used in the reservoir 4 for detecting the water level, the liquid level meter is provided with a plurality of liquid level interlocking points, and each interlocking point corresponds to one liquid level elevation, namely, a response function is realized. The interlocking point of the reservoir 4 from bottom to top comprises: the water pump can start the protection device and stop running when the water level is lower than the pipe orifice plane.
The embodiment of the invention specifically comprises the following steps:
As shown in figure 1, the recycled aggregate reverse filtering layer is provided with four layers, the particle size of the filter material of the recycled aggregate reverse filtering layer is 20-31.5mm, 10-20mm, 5-10mm and 1.18-2.36mm in sequence, and a layer of geotextile is paved at the joint of the uppermost recycled aggregate reverse filtering layer and the planting layer 251.
The particle size of the filtering material of the four-layer recycled aggregate reverse filtering layer is reduced layer by layer, so that a good filtering effect is achieved, and a layer of geotextile is paved at the joint of the uppermost recycled aggregate reverse filtering layer and the planting layer 251, so that the planting substrate of the planting layer 251 can be prevented from flowing away to the inside of the recycled aggregate reverse filtering layer along with runoff, and sediment can be further filtered.
The embodiment of the invention specifically comprises the following steps:
As shown in fig. 2, the roadway includes a motor vehicle lane 21 and a travelator 22, which are disposed in order;
As shown in fig. 5 to 7, the motor vehicle lane 21 includes a first coarse grain type water permeable asphalt concrete layer 211, a medium grain type asphalt concrete layer 212, and a first coarse grain type cement concrete layer 213, which are sequentially disposed from top to bottom; the travelator 22 comprises a second coarse-grained water permeable asphalt concrete layer 221 and a second coarse-grained cement concrete layer 222, which are arranged in sequence from top to bottom; the pavement 24 includes a third coarse-grain type water permeable asphalt concrete layer 241, a medium-grain type water permeable asphalt concrete layer 242, and a third coarse-grain type cement concrete layer 243, which are sequentially disposed from top to bottom.
A layer of coarse-grain permeable asphalt concrete is paved on the upper parts of the motor vehicle lane 21 and the slow-running lane 22, so that rainwater can infiltrate conveniently, a transverse flow is formed in the coarse-grain permeable asphalt concrete, the transverse flow on the road surface is assisted, the transfer of rainwater to the green belt 23 is accelerated, and after the rain stops, the water body remained in the coarse-grain permeable asphalt concrete slowly evaporates to cool the city. The pavement 24 is provided with a coarse grain permeable asphalt concrete layer and a middle grain permeable asphalt concrete layer 242, so that on one hand, the drainage in raining is accelerated, and on the other hand, the water holding capacity is increased after raining is stopped, and the cooling effect is better.
The embodiment of the invention specifically comprises the following steps:
The thickness of the first coarse grain type water permeable asphalt concrete layer 211 is 4-6cm, preferably 5cm, the thickness of the medium grain type asphalt concrete layer 212 is 4-6cm, preferably 5cm, and the thickness of the first coarse grain type cement concrete layer 213 is 6-10cm, preferably 8cm; the pavement thickness of the travelator 22 is 35-45cm, preferably 40cm, and the thickness of the second coarse-grain type water permeable asphalt concrete layer 221 is 10-15cm, preferably 12cm; pavement 24 is laid at a thickness of 30-40cm, preferably 35cm, wherein the thickness of the third coarse-grain type water permeable asphalt concrete layer 241 is 10-15cm, preferably 12cm, and the thickness of the medium-grain type water permeable asphalt concrete layer 242 is 4-6cm, preferably 5cm.
The motor vehicle lane 21 is generally driven by a car, the load is small, the slow road 22 is driven by a large car, so that the paving thickness of the motor vehicle lane 21 is smaller than that of the slow road 22 under the condition of considering economy, and the municipal gallery 6 is arranged at the lower part of the pavement 24, so that the paving thickness is not suitable to be too thin.
The embodiment of the invention specifically comprises the following steps:
The water stabilization layer of the concrete used in the concrete layer is larger than 30cm, the porosity of the coarse-grain permeable asphalt concrete layer is 15-25%, and test results show that the average 15-25% of pores enable the permeable speed to be 31-52L/m.h, which is far larger than ordinary rainfall, the porosity of the medium-grain permeable asphalt concrete layer 242 is 5-10%, and the coarse-grain permeable asphalt concrete layer is assisted to drain.
The embodiment of the invention specifically comprises the following steps:
The two sides of the green belt 23 are paved with first curbs 231, the side of the boulevard 25 close to the sidewalk 24 is paved with second curbs 232, the first curbs 231 and the second curbs 232 are made of permeable materials, permeable bricks are paved on the upper portion of the boulevard 25, and the curbs and the permeable bricks are preferably precast of permeable concrete.
On the one hand, the permeable kerb and the permeable bricks can not obstruct the infiltration and lateral flow of rainwater, and on the other hand, the permeable kerb and the permeable bricks can play a role in preliminary filtration of surface sediment. The permeable kerb and the permeable bricks can store a part of water body, release gradually after rainy days, cool down and relieve urban heat island effect.
The embodiment of the invention specifically comprises the following steps:
the embedded depth of the first road side stone 231 is slightly larger than the thickness of the permeable asphalt concrete layer paved on the slow moving road 22 and the sidewalk 24, so that sediment can be prevented from entering the green belt 23 through the lower part of the first road side stone 231, and the permeable asphalt concrete layer is prevented from being reversely blocked by the planting substrate of the planting layer 251; the overground part of the first road side stone 231 is provided with a water permeable hole, when the water quantity is large and the water permeable quantity of the first road side stone 231 can not meet the requirement, the water body flows to the green belt 23 through the water permeable hole, so that a large amount of accumulated water on the road surface is avoided; the burying depth of the second curbstone 232 is slightly larger than the thickness of the permeable asphalt concrete layer paved by the sidewalk 24, so that sediment can be prevented from entering the boulevard 25 through the lower part of the second curbstone 232, and the permeable asphalt concrete layer is prevented from being reversely blocked by the planting matrix of the planting layer 251; the top of the second curbstone 232 is flush with the pavement surface of the pavement 24 to facilitate the flow of rainwater.
On urban roads, the cleaning frequency of main roads is high, so that sediment on the road surface is prevented from entering the green belt 23 as much as possible, the green belt 23 is too high, water is inconvenient to flow, the pavement 24 is inconvenient to clean mechanically, and sediment on the pavement 24 enters the boulevard 25 along with water flow as much as possible, the cleaning is kept clean and tidy, and the burying mode of the first curbstone 231 and the second curbstone 232 can achieve the effect.
The embodiment of the invention specifically comprises the following steps:
As shown in fig. 8, the permeable wall 311 is prefabricated by permeable concrete 3111 and reinforced concrete 3112 arranged to intersect, and the width of the single intersection is preferably 20cm; the flushing device 5 comprises a pressure pump 51 and a flushing main pipe 52, one end of the flushing main pipe 52 is connected with the pressure pump 51, and the other end extends into the water permeable wall 311; the flushing main pipe 52 is provided with flushing holes 521 at the permeable concrete 3111 of the permeable wall 311.
The pervious concrete 3111 and the reinforced concrete 3112 which are arranged in a crossed mode can meet the pervious requirement and strength requirement, the pressure pump 51 pumps water, the extracted water body is preferably the water body inside the reservoir 4, the pervious concrete 3111 is flushed through the flushing holes 521 formed in the upper portion of the flushing main pipe 52 inside the pervious wall 311, the service life is effectively prolonged, and the maintenance cost is reduced.
The embodiment of the invention specifically comprises the following steps:
The planting layer 251 is paved with soil, the soil is rich in humus content and good in water permeability, the upper surface of the soil is slightly lower than the pavement of the slow-running channel 22 and the sidewalk 24, rainwater is convenient to collect and infiltrate downwards at the upper part of the planting layer 251, the phenomenon that rainwater is converged due to blocking of the soil is avoided, the rainwater can infiltrate downwards into the soil to the greatest extent, the accumulation of rainwater in the sponge pool 3 is increased, the surface water is reduced, the thickness of each layer of the planting layer 251 and the recycled aggregate reverse filtering layer is 40-60cm, and the preferable thickness is 60cm.
The embodiment of the invention specifically comprises the following steps:
the roadway and the pavement 24 are provided with a slope of 1-2%, preferably 2%, in the direction of the sponge pool 3 on both sides.
The setting of a certain gradient is convenient for the flow of rainwater, and road surface ponding when avoiding heavy rain, it should be noted that every layer of concrete layer that pavement and pavement 24 laid all sets up the gradient, and the gradient is the best the same.
After rainfall, if the water quantity is smaller, rainwater at the upper parts of the motor vehicle lane 21 and the slow-running lane 22 infiltrates into respective permeable asphalt concrete layers and transversely migrates, the rainwater enters the green belt 23 after being filtered by the first road side stone 231, infiltrates downwards in the soil of the green belt 23, enters the sponge pool 3, is filtered by the multi-layer recycled aggregate reverse filtering layers and is stored in the sponge pool 3, and when the storage quantity is larger and exceeds the storage limit of the sponge pool 3, the water enters the reservoir 4 for storage through the permeable wall 311. The water on the sidewalk 24 permeates into the permeable asphalt concrete layer, and moves transversely to the two sides, and enters the green belt 23 or the soil of the boulevard 25 through the first kerb 231 and the second kerb 232 to permeate downwards, which is consistent with the way that the rainwater on the upper parts of the motor vehicle lane 21 and the slow running lane 22 enters the green belt 23 to permeate downwards.
If the water quantity is large, rainwater at the upper parts of the motor vehicle lane 21 and the slow running lane 22 infiltrates into the respective permeable asphalt concrete layer downwards and transversely migrates, on the one hand, the rainwater on the sidewalk 24 infiltrates into the permeable asphalt concrete layer downwards and transversely migrates to the two sides on the other hand, the rainwater enters the soil of the green belt 23 or the boulevard 25 through the first curb 231 and the second curb 232 and infiltrates downwards, on the other hand, the rainwater flows into the green belt 23 through the permeable holes or directly flows into the boulevard 25, is filtered by the soil and the multi-layer regenerated aggregate reverse filtering layer and is stored in the sponge pool 3, and when the storage quantity is large and exceeds the storage limit of the sponge pool 3, the water enters the reservoir 4 through the permeable wall 311 and is stored.
After a long period of operation, water is pumped by the pressure pump 51, and the pervious concrete 3111 is rinsed through the rinse hole 521 formed in the upper portion of the rinse main pipe 52 inside the pervious wall 311.
When water is used, the water body stored in the water storage tank 4 is taken out through the water pumping device 7.
In the rain process, a part of rainwater can be stored in the permeable asphalt concrete layer of the pavement and the permeable bricks paved on the upper part of the boulevard 25, and the permeable bricks are gradually released after the rain is in the sunny state, so that the urban heat island effect is relieved.
It should be noted that the "first", "second", "third", etc. are only for distinguishing, for example, the first curb 231 and the second curb 232 may be referred to as curb for simplicity of description, the first coarse-grain type permeable asphalt concrete layer 211, the second coarse-grain type permeable asphalt concrete layer 221, the third coarse-grain type permeable asphalt concrete layer 241, the medium-grain type permeable asphalt concrete layer 242 may be referred to as permeable asphalt concrete layer for simplicity of description, the first coarse-grain type cement concrete layer 213, the second coarse-grain type cement concrete layer 222 may be referred to as coarse-grain type cement concrete layer for simplicity of description, etc. Two structures of the same function and/or type may also simplify the description at the same component, e.g. a third coarse-grain type of pervious asphalt concrete 241 laid by the pavement 24 and a medium-grain type of pervious asphalt concrete 242 may be combined, simply referred to as pervious asphalt concrete laid by the pavement 24.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. Sponge urban road that rainwater was accumulated and was recycled includes road bed (1) and lays urban road (2) on road bed (1) upper portion, its characterized in that: the urban road (2) comprises a pavement, a green belt (23), a pavement (24) and a boulevard (25) which are sequentially arranged from the center of the road to two sides, sponge pools (3) for collecting rainwater are arranged at the lower parts of the green belt (23) and the boulevard (25), a plurality of layers of regenerated aggregate reverse filtration layers with the particle diameters from large to small are arranged from top to bottom in the sponge pools (3), planting layers (251) of the green belt (23) and the boulevard (25) are paved at the upper parts of the uppermost regenerated aggregate reverse filtration layers, municipal galleries (6) are arranged at the lower parts of the pavement (24), reservoir (4) for storing rainwater are arranged at the lower parts of the municipal galleries (6), and water bodies stored in the reservoir (4) are taken through pumping equipment (7); the roadway comprises a motor vehicle lane (21) and a slow roadway (22) which are sequentially arranged; the motor vehicle lane (21) comprises a first coarse grain type permeable asphalt concrete layer (211), a middle grain type asphalt concrete layer (212) and a first coarse grain type cement concrete layer (213) which are sequentially arranged from top to bottom; the slow-moving channel (22) comprises a second coarse-grain permeable asphalt concrete layer (221) and a second coarse-grain cement concrete layer (222) which are sequentially arranged from top to bottom; the paving thickness of the motor vehicle lane (21) is smaller than that of the pavement (22); the sidewalk (24) comprises a third coarse grain type permeable asphalt concrete layer (241), a middle grain type permeable asphalt concrete layer (242) and a third coarse grain type cement concrete layer (243) which are sequentially arranged from top to bottom; the water stabilizing layers of the concrete used by the concrete layer are all larger than 30cm, the porosity of the coarse-grain permeable asphalt concrete layer is 15-25%, and the porosity of the medium-grain permeable asphalt concrete layer (242) is 5-10%; the two sides of the green belt (23) are paved with first curbs (231), the side, close to the sidewalk (24), of the boulevard (25) is paved with second curbs (232), the first curbs (231) and the second curbs (232) are made of water permeable materials, and the upper part of the boulevard (25) is paved with water permeable bricks; the embedded depth of the first road side stone (231) is slightly larger than the thickness of a permeable asphalt concrete layer paved by the slow-moving pavement (22) and the sidewalk (24), and permeable holes are formed in the overground part of the first road side stone (231); the embedded depth of the second curbstone (232) is slightly larger than the thickness of the permeable asphalt concrete layer paved by the sidewalk (24), and the top of the second curbstone (232) is flush with the pavement of the sidewalk (24);
The sponge pool (3) is separated from the reservoir (4) through a partition wall (31), the lowest part of the partition wall (31) is a permeable wall (311), a flushing device (5) is arranged in the permeable wall (311), and the blocking of the permeable wall (311) caused by long-term filtration is prevented.
2. The sponge urban road for rainwater accumulation and reuse according to claim 1, characterized in that: the regenerated aggregate reverse filtering layer is provided with four layers, the particle size of a filter material of the regenerated aggregate reverse filtering layer is 20-31.5mm, 10-20mm, 5-10mm and 1.18-2.36mm in sequence, and a layer of geotextile is paved at the joint of the uppermost regenerated aggregate reverse filtering layer and the planting layer (251).
3. The sponge urban road for rainwater accumulation and reuse according to claim 1, characterized in that: the thickness of the first coarse grain type permeable asphalt concrete layer (211) is 4-6cm, the thickness of the medium grain type permeable asphalt concrete layer (212) is 4-6cm, and the thickness of the first coarse grain type permeable asphalt concrete layer (213) is 6-10cm; the paving thickness of the slow-moving channel (22) is 35-45cm, wherein the thickness of the second coarse-grain permeable asphalt concrete layer (221) is 10-15cm; the pavement (24) is paved with 30-40cm thickness, wherein the thickness of the third coarse-grain permeable asphalt concrete layer (241) is 10-15cm, and the thickness of the medium-grain permeable asphalt concrete layer (242) is 4-6cm.
4. The sponge urban road for rainwater accumulation and reuse according to claim 1, characterized in that: the water permeable wall (311) is prefabricated by water permeable concrete (3111) and reinforced concrete (3112) which are arranged in a crossing way, the flushing device (5) comprises a pressure pump (51) and a flushing main pipe (52), one end of the flushing main pipe (52) is connected with the pressure pump (51), and the other end extends into the water permeable wall (311); the flushing main pipe (52) is provided with a flushing hole (521) at the permeable concrete (3111) of the permeable wall (311).
5. The sponge urban road for rainwater accumulation and reuse according to claim 1, characterized in that: the planting layer (251) is paved with soil, the upper surface of the soil is slightly lower than the pavement of the travelator (22) and the sidewalk (24), and the thickness of each of the planting layer (251) and the recycled aggregate reverse filtering layer is 40-60cm.
6. The sponge urban road for rainwater accumulation and reuse according to claim 1, characterized in that: the gradient of the pavement and the sidewalk (24) is 1-2% towards the sponge pools (3) at the two sides.
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| CN109183531A (en) * | 2018-09-14 | 2019-01-11 | 南京工业大学 | Method for recycling rainwater combined by pervious concrete pavement and composite matrix green belt |
| CN211499025U (en) * | 2019-11-23 | 2020-09-15 | 北京京润园林绿化工程有限公司 | Rainwater recycling system for sponge city |
| CN214362619U (en) * | 2020-07-14 | 2021-10-08 | 上海绿地环境科技(集团)股份有限公司 | Sponge urban road structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR200373294Y1 (en) * | 2004-09-30 | 2005-01-14 | 최선용 | High performance to drained concrete packaging |
| CN206089203U (en) * | 2016-08-18 | 2017-04-12 | 中国航天建设集团有限公司 | Novel constructed wetland sewage treatment system |
| CN208857626U (en) * | 2018-01-30 | 2019-05-14 | 深圳市越众绿色建筑科技发展有限公司 | A kind of permeable and water storage pavement structure |
| CN109914564A (en) * | 2019-01-28 | 2019-06-21 | 华北水利水电大学 | It is a kind of to store and be sustained the underground shallow layer structure recycled for rainwater |
| CN211931811U (en) * | 2020-04-02 | 2020-11-17 | 北京市市政工程设计研究总院有限公司 | Irrigation equipment is collected to sponge urban green belt rainwater |
| CN213804678U (en) * | 2020-10-30 | 2021-07-27 | 河南惠建建设工程有限公司 | Sponge city ecological road roadbed structure |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109183531A (en) * | 2018-09-14 | 2019-01-11 | 南京工业大学 | Method for recycling rainwater combined by pervious concrete pavement and composite matrix green belt |
| CN211499025U (en) * | 2019-11-23 | 2020-09-15 | 北京京润园林绿化工程有限公司 | Rainwater recycling system for sponge city |
| CN214362619U (en) * | 2020-07-14 | 2021-10-08 | 上海绿地环境科技(集团)股份有限公司 | Sponge urban road structure |
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