CN113622603A - Sponge urban rainwater system - Google Patents
Sponge urban rainwater system Download PDFInfo
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- CN113622603A CN113622603A CN202111054933.5A CN202111054933A CN113622603A CN 113622603 A CN113622603 A CN 113622603A CN 202111054933 A CN202111054933 A CN 202111054933A CN 113622603 A CN113622603 A CN 113622603A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000010410 layer Substances 0.000 claims description 140
- 239000002689 soil Substances 0.000 claims description 48
- 238000007689 inspection Methods 0.000 claims description 36
- 239000012528 membrane Substances 0.000 claims description 25
- 239000002344 surface layer Substances 0.000 claims description 21
- 238000007599 discharging Methods 0.000 claims description 10
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 10
- 239000004746 geotextile Substances 0.000 claims description 6
- 244000025254 Cannabis sativa Species 0.000 claims description 5
- 241000196324 Embryophyta Species 0.000 claims description 5
- 239000011449 brick Substances 0.000 claims description 5
- 239000011083 cement mortar Substances 0.000 claims description 3
- 230000008635 plant growth Effects 0.000 claims description 2
- 239000012466 permeate Substances 0.000 description 11
- 230000008595 infiltration Effects 0.000 description 9
- 238000001764 infiltration Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000000670 limiting effect Effects 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 238000005056 compaction Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 241001464837 Viridiplantae Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
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- 238000007726 management method Methods 0.000 description 1
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- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
-
- 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
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
- E03F1/002—Methods, systems, or installations for draining-off sewage or storm water with disposal into the ground, e.g. via dry wells
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
- E03F3/046—Open sewage channels
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
- E03F5/021—Connection of sewer pipes to manhole shaft
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/08—Down pipes; Special clamping means therefor
-
- 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
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Sewage (AREA)
Abstract
The utility model relates to a sponge city rainwater system, it is including being used for with the rainwater exhaust drain pipe on roof, being used for slowing down rainwater discharge slowly arrange the district and be used for collecting the rainwater garden of rainwater, slowly arrange the district and be the slope setting, the one end of drain pipe communicates in the roof, the other end of drain pipe extends to slowly arranges the high-end of district, the rainwater garden sets up and keeps away from high-end one side in the low side of slowly arranging the district, be provided with the overflow pipe in the rainwater garden, the one end of overflow pipe is located the rainwater garden and is the upper shed setting, the other end of overflow pipe is located underground and the portion that the overflow pipe is located secret is for permeating water the pipe, the one end that the overflow pipe is located the underground communicates in water drainage pipe network. This application can effectually reduce the drainage pressure that the rainwater accepted on the roof caused urban drainage system.
Description
Technical Field
The application relates to the field of sponge cities, in particular to a sponge city rainwater system.
Background
The sponge city is a new generation of city rainfall flood management concept, and refers to a city which can be like a sponge and has good elasticity in the aspects of adapting to environmental changes, coping with natural disasters caused by rainwater and the like, and is also called as a water elasticity city.
The existing sponge city mainly adopts the steps that a permeable pavement, a rainwater garden, a green land and the like are paved on the ground, part of rainwater is discharged to the underground in a permeating mode, and the rainwater is infiltrated, drained, regulated, stored and purified through the permeable pavement, the rainwater garden, the green land and the like; compared with the prior art that roof, roads and domestic water are discharged into a river channel or a water treatment site through a municipal drainage pipe network, the pressure of a municipal drainage system during rainfall is effectively relieved.
In view of the above-mentioned related technologies, the inventor believes that, with the development of cities, the occupied area of urban houses is also larger and larger, so that during rainfall, the roof bears relatively more rainwater; when exposed to heavy or continuous rainfall, the rain on the roof places relatively large pressure on the urban drainage system.
Disclosure of Invention
In order to effectual rainwater that reduces the roof and accept to urban drainage system's pressure, this application provides a sponge urban rainwater system.
The application provides a sponge city rainwater system adopts following technical scheme:
the utility model provides a sponge urban rainwater system, is including being used for with the rainwater exhaust drain pipe on roof, the rainwater garden that is used for slowing down the slow zone of arranging of rainwater emission and is used for collecting the rainwater, slow arrange the district and be the slope setting, the one end of drain pipe communicates in the roof, the other end of drain pipe extends to the high-end of slow zone of arranging, the rainwater garden sets up and keeps away from high-end one side in the low side of slow zone of arranging, be provided with the overflow pipe in the rainwater garden, the one end of overflow pipe is located the rainwater garden and is the upper shed setting, the other end of overflow pipe is located underground and the portion that the overflow pipe is located the underground is for permeating water the pipe, the one end that the overflow pipe is located the underground communicates in drain pipe network.
By adopting the technical scheme, when raining, rainwater on the roof is discharged into the slow drainage region through the drain pipe, and primary seepage drainage is performed on the rainwater through the slow drainage region while the falling rainwater is buffered; the rainwater which is not drained in a seepage mode is drained into the rainwater garden to be stored through the obliquely arranged slow drainage area to be used as a buffer, the rainwater can be used as planting water when the rainwater does not exceed the storage amount of the rainwater garden while being viewed, and the rainwater drained into the drainage pipe network is effectively reduced, so that the drainage pressure of the drainage pipe network is further reduced; simultaneously when the rainwater is great and surpass the accumulation volume and the infiltration discharge capacity of rainwater garden, can also discharge into to the drain pipe network through the overflow pipe with the rainwater to in-process that the rainwater discharged to the drainage pipe network, can also do the infiltration through the part that the overflow pipe is located underground once more and discharge, with the rainwater that further reduces to drain to the drainage pipe network, thereby reduce the drainage pressure of drainage pipe network.
Optionally, one end of the drain pipe on the roof is provided with a rainwater hopper.
Through adopting above-mentioned technical scheme, the rainwater fill can effectual reduction arrange into the debris of drain pipe from the roof.
Optionally, the slow drainage area is provided with a drainage ditch for draining rainwater in the drainage pipe into the rainwater garden, and the drainage ditch is obliquely arranged.
By adopting the technical scheme, the rainwater ditch can effectively slow down rainwater and limit rainwater in the process of draining into the rainwater garden from the drainage pipe, and the possibility of free flow in the rainwater drainage process is reduced.
Optionally, an energy dissipation block for reducing rainwater impact force in the drainage pipe is arranged in the drainage ditch.
Through adopting above-mentioned technical scheme, the energy dissipation piece can be done when the rainwater falls to slowly arranging the district from the drain pipe and block to the impact that slowly arranges the district and cause when effectually slowing down the rainwater whereabouts.
Optionally, the drainage ditch is a grass planting ditch or a drainage ditch poured by concrete.
Optionally, the rainwater garden comprises a water storage layer, a gravel covering layer, a planting soil layer planted with plants, geotextile, a gravel cushion layer and a plain soil tamping layer which are sequentially arranged from top to bottom, wherein the water storage layer is formed by plant growth planted in the planting soil layer.
By adopting the technical scheme, rainwater can be accumulated and purified through the water storage layer, so that the rainwater quality in the rainwater garden is optimized, and the rainwater garden can condense the planting soil layer; and do the isolation through the gravel overburden to the top layer of planting the soil layer, in order to reduce the rainwater to the impact of planting the soil layer, and can do the restriction to planting the soil layer, do further restriction to planting the soil layer through geotechnological cloth simultaneously, reduce and lead to the loss of planting soil in the planting soil layer because of rainwater row of oozing, the rubble bed course can effectually be saved the rainwater simultaneously, make the intraformational rainwater of planting soil can in time row of oozing, reduce because of the rainwater accumulation in planting soil layer and lead to the damage that the root system of the plant of planting led to the fact.
Optionally, the overflow pipe includes a vertical portion for discharging rainwater accumulated in the rainwater garden and a drainage portion arranged obliquely, the lower end of the vertical portion is communicated with the high end of the drainage portion, the drainage portion is located in the gravel cushion, and the lower end of the drainage portion is communicated with the drainage pipe network.
Through adopting above-mentioned technical scheme, the hindrance that the rainwater in the rubble bed course flows is less relatively to pass through the drainage part with the rainwater of partly accumulation in the rubble bed course and discharge, reduce the rainwater from vertical portion top inflow, optimize the overflow pipe and arrange into the quality of water of drainage pipe network rainwater.
Optionally, the lateral part of slowly arranging the district still is provided with the permeable road of water-permeable.
Optionally, the permeable road comprises a surface layer, a cushion layer, a gravel layer and a road base layer which are sequentially distributed from top to bottom, the surface layer, the cushion layer, the gravel layer and the road base layer are respectively a permeable concrete layer, a graded gravel cushion layer and a plain soil tamping layer with an impermeable membrane paved on the upper surface, and a water seepage and slow drainage pipe communicated with a drainage pipe network is arranged in the gravel layer; or the surface layer, the cushion layer, the gravel layer and the road base layer are respectively a water permeable brick layer formed by paving water permeable bricks, a graded gravel layer formed by paving dry and hard cement mortar and sand-free macroporous concrete from top to bottom, and a plain soil tamping layer with an impermeable membrane paved on the upper surface, wherein the gravel layer is also internally provided with water seepage slow-discharge pipes communicated with a drainage pipe network; or the surface layer, the cushion layer, the gravel layer and the road base layer are respectively a plastic layer, a permeable concrete layer, a graded gravel layer and a plain soil tamping layer in sequence.
By adopting the technical scheme, the surface layer can be used for penetrating vehicles with certain load and the like, and can be used for penetrating rainwater on the permeable road pavement and performing primary water storage through the surface layer, the cushion layer and the gravel layer, and then the rainwater on the upper layer is isolated through the road base layer provided with the impermeable membrane, so that the possibility of damage or destruction of the rainwater penetration on the road base layer formed by plain soil is reduced; meanwhile, rainwater on the surface layer, the cushion layer and the broken stone layer can be drained into the rainwater inspection well through the water seepage slow-discharge pipe, and the part, located on the side part of the road base layer, of the water seepage slow-discharge pipe can permeate into the underground, so that accumulated water on the surface layer of the permeable road is reduced while the water drainage pressure of the water drainage pipe network is buffered.
Optionally, a rainwater inspection well is further arranged on one side, away from the slow drainage area, of the rainwater garden, the water seepage pipe and the drainage part are both communicated with the interior of the rainwater inspection well, and a water drain pipe used for draining rainwater into a drainage pipe network is arranged at the bottom of the rainwater inspection well.
Through adopting above-mentioned technical scheme, the rainwater inspection shaft can further do the accumulation and the buffering to the rainwater to further slow down rainwater discharge's pressure, can also be after using for a long time simultaneously, do the maintenance through the rainwater inspection shaft to overflow pipe and infiltration slow-draining pipe.
In summary, the present application includes at least one of the following beneficial technical effects:
when raining, the rainwater on the roof is discharged into the slow drainage region through the drain pipe, and primary seepage drainage is performed on the rainwater through the slow drainage region while the falling rainwater is buffered; the rainwater which is not drained in a seepage mode is drained into the rainwater garden to be stored through the obliquely arranged slow drainage area to be used as a buffer, the rainwater can be used as planting water when the rainwater does not exceed the storage amount of the rainwater garden while being viewed, and the rainwater drained into the drainage pipe network is effectively reduced, so that the drainage pressure of the drainage pipe network is further reduced; meanwhile, when the rainwater is large and exceeds the accumulated amount and the seepage amount of the rainwater garden, the rainwater can be drained into the rainwater inspection well through the overflow pipe, and in the process of draining the rainwater into the rainwater inspection well, the part, located underground, of the rainwater can be drained again through the overflow pipe, so that the rainwater drained into the rainwater inspection well is further reduced, and the drainage pressure of a drainage pipe network is reduced.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of embodiment 1 of the present application.
Fig. 2 is an enlarged schematic view of a portion a of fig. 1.
FIG. 3 is a schematic view of the installation structure of the overflow pipe, the pad pipe and the water permeable membrane in example 2 of the present application.
Fig. 4 is a schematic sectional view of the line B-B in fig. 3.
Fig. 5 is an enlarged schematic view of a portion C of fig. 4.
Description of reference numerals: 1. a drain pipe; 11. a rainwater hopper; 2. a slow discharge area; 21. a drainage ditch; 22. energy dissipation blocks; 3. a rain garden; 30. a aquifer; 31. a gravel pack; 32. planting a soil layer; 33. geotextile; 34. a gravel cushion layer; 35. a plain soil ramming layer; 4. an overflow pipe; 41. a vertical portion; 42. a water discharge section; 421. a drain hole; 422. a water discharge tank; 5. a water permeable road; 50. a surface layer; 51. a cushion layer; 52. a crushed stone layer; 53. a roadbed layer; 54. water seepage and slow drainage pipes; 6. a rainwater inspection well; 61. a drain pipe; 62. a well cover; 7. a cushion pipe; 71. a connecting ring; 72. a connecting ring groove; 73. a confinement ring; 74. a connecting pipe; 741. a connecting cable; 742. a locking block; 75. connecting holes; 76. locking the bolt; 8. and (3) a water permeable membrane.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses sponge city rainwater system.
Example 1
Referring to fig. 1 and 2, the sponge urban rainwater system includes a drain pipe 1, a slow drainage region 2, a rainwater garden 3, a permeable road 5, and a rainwater inspection well 6. Drain pipe 1 is vertical setting and its upper end intercommunication in the roof, and drain pipe 1's lower extreme is towards slowly arranging district 2 settings to be used for discharging the rainwater of roof gathering to slowly arranging in the district 2. Wherein, the top end of the drain pipe 1 is provided with a rainwater hopper 11 for rapidly removing roof rainwater and simultaneously blocking sundries flowing along with the rainwater.
The slow exhausting region 2 is disposed in an inclined manner, and the inclination is 0.03%, in other embodiments, the inclination of the slow exhausting region 2 may be other values, for example, 0.04%, 0.1%, 0.3%, and the like. The delivery port of drain pipe 1 is towards the high-end setting of slowly arranging district 2, and rainwater garden 3 is located slowly arranges one side that district 2 kept away from drain pipe 1, and rainwater garden 3 is located the low side of slowly arranging district 2 promptly, and rainwater inspection shaft 6 is located rainwater garden 3 and keeps away from one side of slowly arranging district 2, and the road 5 that permeates water is laid and is slowly arranged district 2 or between rainwater inspection shaft 6 and rainwater garden 3, in this application embodiment, road 5 that permeates water is laid and is arranged between rainwater garden 3 and rainwater inspection shaft 6.
Referring to fig. 1 and 2, the upper surface of the rainwater garden 3 is concavely provided for accumulating rainwater. An overflow pipe 4 is arranged in the rainwater garden 3, one end of the overflow pipe 4 penetrates into and is communicated with the interior of the rainwater garden 3, the height of one end, located in the rainwater garden 3, of the overflow pipe 4 is lower than the opening edge of the rainwater garden 3, and the other end of the overflow pipe 4 is communicated with the rainwater inspection well 6 so as to be used for discharging excessive water accumulated in the rainwater garden 3.
Be provided with outlet pipe 61 in the rainwater inspection shaft 6 to be used for discharging the rainwater in the rainwater inspection shaft 6 to the drainage pipe network, and the upper shed border lid of rainwater inspection shaft 6 has closed well lid 62. In other embodiments, the rainwater garden 3 may also be a concave greenbelt, and the rainwater inspection well 6 may also be formed by pouring permeable concrete, so as to further accumulate and permeate rainwater and reduce the drainage pressure of the drainage pipe network.
When the rainwater on the roof is excessive, the rainwater can be drained into the slow drainage area 2 through the drain pipe 1 to primarily slow down the drainage speed of the rainwater, part of the rainwater permeates into the ground through the slow drainage area 2, then the rest of the rainwater can flow into the rainwater garden 3, the impact on the rainwater garden 3 can be effectively reduced by the rainwater slowed down in the slow drainage area 2, the rainwater garden 3 can accumulate and buffer the rainwater, part of the rainwater accumulated in the rainwater garden 3 can also permeate into the ground, finally, the excessive rainwater accumulated in the rainwater garden 3 and part of the rainwater below the water permeable road 5 are drained into the rainwater inspection well 6 through the overflow pipe 4, and the rainwater which cannot permeate into the ground finally is drained into the drain pipe network through the drain pipe 61 to effectively slow down the pressure of the drainage system when the rainwater is excessive.
Referring to fig. 1 and 2, the slow release area 2 is a green land planted with green plants, a grass planting land or a green land paved with pebbles. And a water drainage ditch 21 is arranged in the slow drainage area 2, and the water drainage ditch 21 is obliquely arranged. The drainage ditch 21 is a grass planting ditch or a drainage ditch formed by pouring concrete, and is the grass planting ditch in the embodiment of the application, so that the greening effect is achieved, rainwater can be relatively slowly discharged into the rainwater garden 3, and in the process of guiding the rainwater, part of rainwater can be deeply arranged below the slow drainage area 2 and the drainage ditch 21, so that the drainage pressure of a drainage pipe network is further reduced. The high end of the drainage ditch 21 is provided with an energy dissipation block 22 for reducing impact force generated on the inner wall of the slow drainage region 2 and the drainage ditch 21 when rainwater in the drainage pipe 1 falls, and the energy dissipation block 22 is energy dissipation stone or a block-shaped component formed by pouring concrete.
In other embodiments, the drainage ditch 21 may not be provided, and the energy dissipation block 22 is only required to be placed at the water outlet of the drainage pipe 1, so that the impact of rainwater can be reduced through the energy dissipation block 22, and in the process, the relatively sufficient seepage and drainage can be performed through the slow drainage region 2, so as to reduce the drainage pressure of the rainwater drainage on the roof on the drainage pipe network.
Referring to fig. 1 and 2, the rainwater garden 3 comprises an aquifer 30, a gravel covering layer 31, a planting soil layer 32 planted with plants, a geotextile 33, a gravel cushion layer 34 and a plain soil tamped layer 35 which are sequentially arranged from top to bottom, wherein the aquifer 30, the gravel covering layer 31, the planting soil layer 32, the geotextile 33, the gravel cushion layer 34 and the plain soil tamped layer 35 are all arranged in a concave manner. The aquifer 30 is formed by growth of aquatic plants planted in the planting soil layer 32.
The gravel covering layer 31 is laid to the lower end of the drainage ditch 21 towards the edge of one side of the slow drainage region 2, the plain soil compaction layer 35 is formed by compacting the plain soil, the compaction coefficient of the plain soil compaction layer is 0.9, the part of the overflow pipe 4 communicated with the rainwater inspection well 6 is positioned in the gravel cushion layer 34, and the part of the overflow pipe 4 positioned underground is a water permeable pipe.
When raining, rainwater flows into the rainwater garden 3 from the drainage ditch 21, the gravel covering layer 31 can primarily buffer rainwater discharged from the drainage ditch 21, so that the impact of the rainwater on the water storage layer 30 and the planting soil layer 32 is reduced, the water storage layer 30 can combine the planting soil layer 32 with the gravel covering layer 31, the influence of the rainwater on the planting soil layer 32 is further reduced, then the geotextile 33 can reduce the loss of the planting soil in the rainwater infiltration process, the influence of rainwater erosion on the overall water retention, water storage and water seepage performance of the rainwater garden 3 is reduced, and the gravel covering layer 31 can also have a certain limiting effect on soil on the surface layer of the planting soil layer 32 by covering the surface of the planting soil layer 32, so that the turbidity caused by rainwater accumulated in the water storage layer 30 due to rainwater erosion is reduced; afterwards, geotechnological cloth 33 can do further restriction to the planting soil in planting soil layer 32, when further reducing the rainwater infiltration and causing the soil loss of planting soil layer 32, can also be through water-storage layer 30, gravel overburden 31, planting soil layer 32, geotechnological cloth 33 is certain filtration and purification to the rainwater, and rubble bed course 34 can the effectual mobility that increases the rainwater, make overflow pipe 4 in the spontaneous rubble bed course 34 that too late to infiltrate underground rainwater can be timely arrange into rainwater inspection shaft 6 in, do further buffering and save the back through rainwater inspection shaft 6 and arrange into in the rainwater pipe network, with the drainage pressure who further reduces water drainage network.
Referring to fig. 1 and 2, the overflow pipe 4 includes a vertical portion 41 and a drainage portion 42, the vertical portion 41 is vertically disposed, the upper end of the vertical portion 41 penetrates through the water storage layer 30, the lower end of the vertical portion 41 penetrates into the gravel cushion 34 and is communicated with the drainage portion 42, and one end of the drainage portion 42, which is far away from the vertical portion 41, is communicated with the rainwater inspection well 6. Wherein, the drainage part 42 is obliquely arranged, the inclination is 0.3%, and the drainage part 42 is a water seepage pipe.
When the rainwater draining device is used, rainwater flowing into the vertical part 41 can be drained into the rainwater inspection well 6 again in a permeating manner, so that the rainwater flowing into the rainwater inspection well 6 is further reduced, and the pressure of a drainage pipe network is reduced.
Referring to fig. 1 and 2, the water permeable road 5 includes a surface layer 50, a cushion layer 51, a gravel layer 52, and a road bed layer 53, which are sequentially disposed under the self-injury. Wherein, surface course 50 and bed course 51 are the concrete layer that permeates water, and the metalling 52 is for adopting the graded rubble to lay fashioned graded metalling, and roadbed 53 is the plain soil tamped layer that the waterproofing membrane was laid to the upper surface, and wears to be equipped with the infiltration slow-discharging pipe 54 that communicates in rainwater inspection shaft 6 in the metalling 52.
When the waterproof road is used, the surface layer 50 can be used for allowing vehicles with certain loads to pass through, the surface layer 50, the cushion layer 51 and the gravel layer 52 are used for enabling rainwater on the road surface of the permeable road 5 to permeate and primarily store water, then the road base layer 53 provided with the impermeable film is used for isolating rainwater on the upper layer, and the possibility that the rainwater permeates to damage or destroy the road base layer 53 formed by plain soil is reduced; simultaneously, rainwater in the surface layer 50, the cushion layer 51 and the gravel layer 52 can be drained into the rainwater inspection well 6 through the water seepage slow-draining pipe 54, and the part of the side part of the road base layer 53 can be infiltrated underground through the water seepage slow-draining pipe 54, so that the accumulated water on the surface layer of the water-permeable road 5 is reduced while the water drainage pressure of a drainage pipe network is buffered.
In other embodiments, the surface layer 50 is formed by paving water permeable bricks, the cushion layer 51 is formed by paving dry cement mortar or sand-free macroporous concrete, the gravel layer 52 is formed by paving graded gravel, and the roadbed layer 53 is formed by tamping plain soil with a waterproof film paved on the upper surface thereof, so as to be suitable for road surfaces which do not need to bear large load; or the surface layer 50, the cushion layer 51, the gravel layer 52 and the road bed layer 53 are respectively a plastic layer, a permeable concrete layer, a graded gravel layer and a plain soil tamping layer in sequence, wherein the plastic layer is a permeable plastic layer or a permeable rubber layer so as to improve the resistance of the permeable road 5 to fatigue cracks and reflection cracks.
The implementation principle of the embodiment 1 is as follows: when raining, the roof rainwater can be drained into the rainwater garden 3 through the drainage ditch 21 after the impact force of the energy dissipation block 22 is relieved through the drainage pipe 1, and in the process of draining into the rainwater garden 3, the drainage ditch 21 is used for preliminary seepage drainage so as to preliminarily reduce the drained rainwater; then relatively abundant infiltration row is carried out through doing in the rainwater garden 3 again to when slowing down the pressure of drainage pipe network, can also overflow the rainwater through overflow pipe 4 in rainwater garden 3 and discharge into to rainwater inspection shaft 6 and do the secondary and save and slowly discharge, after ooze the row many times, can effectually reduce the rainwater that discharges into to the drainage pipe network, thereby can effectually slow down the drainage pressure of drainage pipe network.
Example 2
Referring to fig. 2 and 3, the present embodiment is different from embodiment 1 in that a pipe wall of the drainage portion 42 is a closed structure, and the drainage portion 42 is provided with a plurality of drainage holes 421 penetrating through the pipe wall. A plurality of pad pipes 7 axially distributed along the drainage part 42 are arranged in the drainage part 42, and two ends of the pad pipes 7 between the two pad pipes 7 in the distribution direction in the plurality of pad pipes 7 are detachably connected to the adjacent pad pipes 7 respectively. Fill up pipe 7 and have the hard formula of the crack of permeating water that runs through for the pipe wall shaping pipe of permeating water, fill up pipe 7 wears to locate in water drainage 42, and the outer wall overcoat of fill up pipe 7 has the membrane 8 of permeating water that is the tubular structure, and the border at the both ends of membrane 8 of permeating water is held by the centre gripping between the fill up pipe 7 of establishing and the adjacent 7 tip of fill up pipe of establishing. Wherein, the length of cushion pipe 7 is less than the diameter of rainwater inspection shaft 6 to accomodate cushion pipe 7.
When the rainwater draining device is used, as rainwater passing through the rainwater garden 3 and the slow draining area 2 needs to be drained, relatively more impurities are contained in the rainwater, and after the rainwater draining device is used for a long time, tiny impurities can block the water draining part 42, so that the drainage speed and efficiency of the rainwater from the water draining part 42 can be seriously influenced; at this moment, pad pipe 7 and permeable membrane 8 can be filtered the rainwater of infiltration, reduce the possibility that drain 42 is blockked up, drain 42 permeates water to the underground through wash port 421 simultaneously, simultaneously when maintaining, the accessible is taken a plurality of pad pipes 7 out in proper order and is placed in rainwater inspection shaft 6 and do the washing, can also effectually reduce because of the rainwater strikes the possibility that the debris that leads to pad pipe 7 piles up in drain 42 inner wall, when optimizing rainwater garden 3 at the overflow, when the drainage function of draining 42, the later stage can also be convenient for to the maintenance of infiltration drainage function, and change permeable membrane 8 that can be synchronous, reduce the possibility that drain 42 is blockked up.
Referring to fig. 4 and 5, one end of the cushion tube 7 is fixedly connected with a connecting ring 71 which is arranged on the same central axis, the outer wall of the other end of the cushion tube 7 is provided with a connecting ring groove 72, the connecting ring 71 is sleeved on the outer wall of the connecting ring groove 72 on the adjacent cushion tube 7, and the opposite end edges of the permeable membranes 8 on the two adjacent cushion tubes 7 are clamped between the connecting ring 71 and the groove wall of the connecting ring groove 72. And the groove wall of the connecting ring groove 72 which is not sleeved with the connecting ring 71 on the cushion pipe 7 is externally sleeved with a limiting ring 73 for fixing the edge of the permeable membrane 8 at one end of the cushion pipes 7 to the cushion pipe 7; a limiting ring 73 is also arranged in the connecting ring 71 which is not externally sleeved on the groove wall of the connecting ring groove 72 on the cushion pipe 7 in a penetrating way, the limiting ring 73 and the cushion pipe 7 are arranged on the same central axis, and the opening edge of the other permeable membrane 8 which is not externally sleeved on the groove wall of the connecting ring groove 72 is clamped between the connecting ring 71 and the limiting ring 73.
The opening border fixedly connected with a plurality of connecting pipes 74 of the one end that the cushion pipe 7 offered the connection annular groove 72, a plurality of connecting pipes 74 encircle the central axis setting of cushion pipe 7, and the connecting hole 75 of a plurality of connecting pipes 74 of a plurality of one-to-one correspondence is seted up to the one end that the cushion pipe 7 kept away from connecting pipe 74. The connection pipe 74 is inserted into the connection hole 75 of the adjacent cushion pipe 7, the connection cable 741 is fixedly connected to the inside of the connection pipe 74, one end of the connection cable 741 passes through the connection pipe 74 and is fixedly connected to the lock block 742, and the lock block 742 abuts against the connection pipe 74. A plurality of locking bolts 76 are arranged at one end of the cushion pipe 7 far away from the connecting pipe 74 in a penetrating mode, the locking bolts 76 are arranged around the central axis of the cushion pipe 7, and the locking bolts 76 are respectively inserted into the locking blocks 742 in a one-to-one corresponding mode and are connected to the locking blocks 742 in a threaded mode. Wherein, the connecting pipe 74 is disposed through the clamped opening edge of the permeable membrane 8 for further connecting the permeable membrane 8 to the cushion pipe 7 relatively stably.
Preferably, one end of the cushion tube 7 fixedly connected with the connection ring 71 is disposed toward the vertical portion 41, so that the cushion tube 7 is drawn out relative to the drain portion 42 through the connection pipe 74 at the other end of the cushion tube 7 during the later maintenance, and interference to the foreign matters caused by not being inserted into the connection hole 75 can be effectively reduced.
Referring to fig. 4 and 5, in order to reduce the problem that the rainwater seeped out from the pad pipe 7 cannot be drained through the drainage holes 421 in time, the inner wall of the drainage portion 42 is provided with a plurality of drainage grooves 422 criss-cross arranged, and the drainage holes 421 are located in the drainage grooves 422 so that the rainwater seeps out and the interference of the permeable membrane 8 on seepage drainage is reduced.
The implementation principle of the embodiment 2 is as follows: in subsequent maintenance and overhaul, after the cushion pipe 7 which is farthest away from the vertical part 41 is pulled out, the limiting ring 73 and the locking bolt 76 on the pulled cushion pipe 7 are detached, the connecting hole 75 which is relatively inserted into the connecting pipe 74 can be pulled out, and the cushion pipe 7 which is sleeved with the permeable membrane 8 is detached and placed in the rainwater inspection well 6 so as to clean the pulled cushion pipe 7, so that compared with the case that the drainage part 42 and the inner wall of the cushion pipe 7 are directly washed by water, the possibility that impurities are accumulated between the cushion pipe 7 and the permeable membrane 8 can be effectively reduced; meanwhile, in the process of pulling out the pad pipes 7, the permeable membrane 8 can also clean the inner wall of the drainage part 42 through the connecting cables, so that the inner wall of the drainage part 42 can be further cleaned and maintained conveniently and sufficiently, and a part of other adjacent pad pipes 7 can be pulled out synchronously, so that the pad pipes 7 can be cleaned in the rainwater inspection well 6 with a relatively narrow space; when the water drainage device is re-installed, maintenance can be completed by only sleeving a new permeable membrane 8 on the cushion pipe 7, inserting the limiting ring 73 into the connecting ring 71, fixing the permeable membrane 8 at one end of the cushion pipe 7 facing the vertical part 41, inserting the cushion pipe 7 and the sleeved permeable membrane 8 into the water drainage part 42, externally sleeving the connecting ring 71 on the other cushion pipe 7 externally sleeved with the permeable membrane 8 on the groove wall of the connecting ring groove 72, connecting and locking the two adjacent cushion pipes 7 through the locking bolt 76, repeatedly detachably connecting the cushion pipes 7 together and sequentially inserting the cushion pipes into the water drainage part 42, and simultaneously keeping the function of water seepage and drainage in the water drainage part 42; and the drain part 42 can also maintain the passage of the drain during maintenance, reducing the possibility of the drain passage collapsing due to the extraction of the pad pipe 7.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a sponge city rainwater system which characterized in that: including being used for with rainwater exhaust drain pipe (1) on roof, be used for slowing down rainwater drainage slow-discharging district (2) and be used for collecting rainwater garden (3), slow-discharging district (2) are the slope setting, the one end of drain pipe (1) communicates in the roof, the other end of drain pipe (1) extends to the high-end of slow-discharging district (2), rainwater garden (3) set up and keep away from high-end one side in the low side of slow-discharging district (2), be provided with overflow pipe (4) in rainwater garden (3), the one end of overflow pipe (4) is located rainwater garden (3) and is the upper shed setting, the other end of overflow pipe (4) is located underground and overflow pipe (4) are located the portion of underground and are the pipe of permeating water, overflow pipe (4) are located underground one end and communicate in the drainage pipe network.
2. The sponge urban rainwater system of claim 1, wherein: one end of the drain pipe (1) on the roof is provided with a rainwater hopper (11).
3. The sponge urban rainwater system of claim 1, wherein: the slow drainage area (2) is provided with a drainage ditch (21) for draining rainwater in the drainage pipe (1) into the rainwater garden (3), and the drainage ditch (21) is obliquely arranged.
4. The sponge urban rainwater system of claim 3 wherein: and an energy dissipation block (22) for relieving the impact force of rainwater in the drain pipe (1) is arranged in the drainage ditch (21).
5. The sponge urban rainwater system of claim 3 wherein: the drainage ditch (21) is a grass planting ditch or a drainage ditch poured by concrete.
6. The sponge urban rainwater system of claim 1, wherein: the rainwater garden (3) comprises a water storage layer (30), a gravel covering layer (31), a planting soil layer (32) planted with plants, geotextile (33), a gravel cushion layer (34) and a plain soil tamping layer (35) which are sequentially arranged from top to bottom, wherein the water storage layer (30) is formed by plant growth planted in the planting soil layer (32).
7. The sponge urban rainwater system of claim 6 wherein: the overflow pipe (4) comprises a vertical part (41) used for discharging accumulated rainwater in the rainwater garden (3) and a drainage part (42) which is obliquely arranged, the lower end of the vertical part (41) is communicated with the high end of the drainage part (42), the drainage part (42) is positioned in the gravel cushion (34), and the lower end of the drainage part (42) is communicated with a drainage pipe network.
8. The sponge urban rainwater system of claim 7 wherein: the lateral part of the slow drainage area (2) is also provided with a permeable road (5).
9. The sponge urban rainwater system of claim 8, wherein: the permeable road (5) comprises a surface layer (50), a cushion layer (51), a gravel layer (52) and a road base layer (53) which are sequentially distributed from top to bottom, wherein the surface layer (50), the cushion layer (51), the gravel layer (52) and the road base layer (53) are respectively a permeable concrete layer, a graded gravel cushion layer and a plain soil tamping layer with an impermeable membrane paved on the upper surface, and a water seepage slow-discharge pipe (54) communicated with a water drainage pipe network is arranged in the gravel layer (52); or the surface layer (50), the cushion layer (51), the gravel layer (52) and the road base layer (53) are respectively a permeable brick layer formed by paving permeable bricks, a graded gravel layer formed by paving dry and hard cement mortar and sand-free macroporous concrete from top to bottom and paving graded gravel, and a plain soil tamping layer with an impermeable membrane paved on the upper surface, and a water seepage slow-drainage pipe (54) communicated with a drainage pipe network is also arranged in the gravel layer (52); or the surface layer (50), the cushion layer (51), the gravel layer (52) and the road base layer (53) are respectively a plastic layer, a permeable concrete layer, a graded gravel layer and a plain soil tamping layer in sequence.
10. The sponge urban rainwater system of claim 9 wherein: one side of the rainwater garden (3) far away from the slow drainage area (2) is further provided with a rainwater inspection well (6), the water seepage pipe (56) and the drainage part (42) are communicated with the interior of the rainwater inspection well (6), and the bottom of the rainwater inspection well (6) is provided with a drain pipe (61) used for draining rainwater into a drainage pipe network.
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| CN202111054933.5A CN113622603A (en) | 2021-09-09 | 2021-09-09 | Sponge urban rainwater system |
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Application publication date: 20211109 |