CN109024833A - A kind of drainage system and its construction method in sponge city - Google Patents
A kind of drainage system and its construction method in sponge city Download PDFInfo
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- CN109024833A CN109024833A CN201810961168.7A CN201810961168A CN109024833A CN 109024833 A CN109024833 A CN 109024833A CN 201810961168 A CN201810961168 A CN 201810961168A CN 109024833 A CN109024833 A CN 109024833A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
- B01D24/105—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container downward filtration without specifications about the filter material supporting means
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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Abstract
The invention discloses a kind of drainage systems in sponge city, belong to sponge urban construction technical field, it is intended to solve the problem of when precipitation abruptly increase in the prior art that drainage system drained and easily cause excess surface water slowly.Its key points of the technical solution are that drainage system includes rainwater penetrating layer, rainwater purification layer and reservoir, rainwater purification layer is made of several clean units, and several drainage tubes are provided in each clean unit.When conventional precipitation, after rainwater is filtered via the filter layer in clean unit, exported into drainage tube；When precipitation abruptly increase, water level rises to the top end opening for not crossing drainage tube in the collection chamber of clean unit, and rainwater directly exports via drainage tube and is less prone to accumulating for a large amount of rainwater, to achieve the purpose that reduce bottom surface ponding.The present invention accordingly discloses a kind of construction method of the drainage system in above-mentioned sponge city.
Description
Technical field
The invention belongs to sponge urban construction technical fields, more specifically, it relates to a kind of draining system in sponge city
System and its construction method.
Background technique
Sponge city is new generation of city storm water man- agement concept, refers to that city is brought in adaptation environmental change and reply rainwater
Natural calamity etc. there is good " elasticity ", also referred to as " water elasticity city ".International term is " low influence
Develop storm-water system building ".Water suction, water storage, infiltration, water purification when raining by the water stored " release " and are used when needing.
Build sponge city, it is necessary to develop corresponding water storage structure, water transfer structure and water distribution structure.Such as
CN108193758A discloses a kind of sponge urban road receipts drainage structure, is equipped with pavement and garage along road width direction
Road, the inside on pavement are equipped with greenbelt, are equipped at intervals with several rainwater inspection wells along link length direction on driveway；Greenbelt
It from the bottom to top include aquifer, composite geo-membrane, planting soil layer, permeable geotextiles, middle layer of sand and grass planting brick layer；Driveway is along road
Road length direction is embedded with harvesting sink, and harvesting sink includes groove body, and groove body top is flush with running surface；It is set in groove body
There is the elongated slot for receiving and keeping water, is equipped with gap between groove body top surface at the top of elongated slot；It is equipped at intervals on driveway at greenbelt
Several receipts wells, receiving well and receiving and keeping sink separator is multistage, and every section of harvesting sink, which is spaced, is connected with several water-permeable pipes, permeable
The pipe other end protrudes into aquifer.
But the greenbelt of above-mentioned receipts drainage structure include from the bottom to top aquifer, composite geo-membrane, planting soil layer,
Permeable geotextiles, middle layer of sand and grass planting brick layer, although the setting of this kind of multilayer filter structure is good to the filter effect of water body, simultaneously
Also reduce the infiltration rate of rainwater.The areas such as southeastern coast in China are easy to the extreme weathers such as heavy rain, typhoon occur, short
Precipitation can abruptly increase in time.When being drained using the above structure, the cataclysm of this precipitation can not be adapted to, easily cause because
Urban waterlogging caused by rainwater infiltration is drained through slowly.
Thus, how to retain the water storage of discharge structure and while water storage function, it is big to precipitation extreme to improve it
The adaptability of weather is urgent problem to be solved in the industry.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of sponge municipal drainage structure, tool
Have and has both water storage and water storage function while being still able to maintain the advantage of efficient drainage efficiency in the case where precipitation abruptly increase.
To achieve the above object, the present invention provides the following technical scheme that
A kind of drainage system in sponge city, rainwater purification layer including rainwater penetrating layer, below rainwater penetrating layer and
The reservoir being set to below rainwater purification layer；Wherein, rainwater purification layer is spliced by several clean units；The purification is single
Member includes the shell closed at both ends of hollow tube-shape, and several permeable holes are provided on the roof of shell；It is set in parallel in the shell
It is equipped with upper spacer and lower clapboard, the upper spacer is porous disc；The inner cavity of shell is divided into top by the upper spacer and lower clapboard
The drainage lumens of the collection chamber in portion, the purify cavity at middle part and bottom；Several both ends are provided in the shell along its length
There is the drainage tube of opening, the bottom end of the drainage tube is fixedly installed through lower clapboard, and top is stretched to through upper spacer to be collected
There are spacing between intracavitary and end and the roof of shell；Filter layer made of being filled as filler is provided in the purify cavity,
The drainage tube, which is located on the circumferential side wall of purify cavity inner part, is provided with several sepage micropores；It is provided on the bottom wall of the shell
The aqueduct being connected to drainage lumens is provided with the jack for aqueduct insertion on the roof of the reservoir；The reservoir connection
There is the first drainpipe, first drainpipe is communicated with water system far from one end of reservoir.
By using above-mentioned technical proposal, when conventional precipitation, rainwater enters rain after rainwater penetrating layer primary filtration
Water warfare layer is cleaned filtering.Rainwater penetrates into the collection chamber of enclosure interior from the top plate of clean unit, then penetrate on every
Plate infiltration layer is by filtration treatment.Rainwater by filter layer filtration treatment enters drainage by the sepage micropore on drainage tube
In pipe, finally flows into drainage lumens from the opening of drainage tube bottom end, be directed into reservoir via aqueduct.Reservoir is set
It sets, the water-holding capacity of drainage system has been significantly greatly increased.It is drawn, is used as by the rainwater that the first drainpipe can accumulate reservoir
The purposes such as irrigation, washing, to reduce the waste to water resource.
And rainwater can be put aside when precipitation is big or precipitation abruptly increase, in the collection chamber of clean unit, when the rain of savings
After water did not had the opening on drainage tube top, rainwater is directly discharged into drainage lumens via drainage tube, is improved drainage efficiency, is reduced
Because the filter layer rate of filtration it is limited caused by waterlogging possibility.So that sponge sewerage system of the invention is to precipitation weather
Adaptability is good, drainage performance is splendid.
Further, the filter layer includes the fibrous layer set gradually from the bottom to top, fine sand layer and pebble layer.
By using above-mentioned technical proposal, rainwater is flowed into after clean unit successively via pebble layer, fine sand layer and fiber
The filtering of layer, can filter out most physical impurity, then be stored in reservoir.The rainwater stored can be used for washing
It washs or irrigates, improve the utilization rate to water resource.
Further, the cross-sectional shape of the shell is rectangle, is arranged along its length on adjacent two sidewalls
There is bar shaped fin, the strip-shaped clamp groove being caught in for the bar shaped fin is in addition provided on two adjacent walls.
By using above-mentioned technical proposal, by the bar shaped fin on adjacent clean unit shell and between strip-shaped clamp groove
It inserts scarf and closes the arrangement tightness degree that can be increased between clean unit, be embedded in underground for a long time and be not easy breakage of collapsing.
Further, the rainwater penetrating layer includes the permeable brick layer being set to above rainwater purification layer, the water-permeable brick
The planting soil layer for planting green plant is provided on layer.
By using above-mentioned technical proposal, permeable brick layer can obstruct planting soil and enter rainwater purification layer, to prevent from reducing
The purification efficiency of rainwater purification layer.Planting soil layer can be used for planting green plant, so that drainage system of the invention is suitable for greening
Band, road interval, Rain Garden etc..
Further, the water system includes water pump and water supply network；The water inlet end of the water pump and the first drainpipe
Connection, water outlet are connected to water supply network；The water supply network is embedded in planting soil layer.
By using above-mentioned technical proposal, the rainwater being stored in reservoir can be passed through to water supply network by water pump
It is interior, it supplies water by water supply network to planting soil layer, irrigation can be provided when short of rain or precipitation deficit for green plant and used
Water.
Further, the water supply network has several short tubes to be spliced and grid-shaped；The section of the water supply network
It is provided with hollow spherical connector at point, is provided with several water supply holes on the connector.
By using above-mentioned technical proposal, it can uniformly supply water to planting soil layer, guarantee that green plant can be with normal growth.
Further, the water supply network is in Cellular Networks trellis, and folded acute angle is 60 ° between the axis of adjacent two short tube.
By using above-mentioned technical proposal, overlaps each other, realized to planting soil between the water supply coverage of adjacent connector
The all standing supplied water everywhere in layer supplies water uniformly, reduces water supply dead angle.
Further, the reservoir is also communicated with the second drainpipe, the described one end of second drainpipe far from reservoir
It is connected to the underground water collecting pipe in city；The opening of one end that first drainpipe is connected to reservoir is close to the bottom of reservoir
Wall, the roof of the close reservoir of the opening of one end that second drainpipe is connected to reservoir.
By using above-mentioned technical proposal, when water level reaches the second drainpipe opening in reservoir, extra water can be through
The underground water collecting pipe for entering city by the second drainpipe, avoids spill-over in reservoir from causing rainwater that row can not be descended to cause floor space
Water.
Further, the inner bottom wall of the reservoir is provided towards the first inclined inclined-plane in drainpipe direction.
By using above-mentioned technical proposal, when water level is lower in reservoir, rainwater can collect in columns base and be located at the
One draining tube opening side, convenient for exporting reservoir remainder ponding to water supply network.
Another object of the present invention is to provide a kind of construction methods of the drainage system in above-mentioned sponge city, using this kind
The drainage system of method construction has both water storage and water storage function, is still able to maintain efficiently to drain in the case where precipitation abruptly increase simultaneously and imitate
Rate.
To achieve the above object, the present invention provides the following technical scheme that
A kind of construction method of above-mentioned sponge sewerage system, includes the following steps,
Step 1: foundation pit excavates: setting the cutting depth of foundation pit according to the laying depth of underground water collecting pipe, existed using excavator
Foundation pit is excavated in the regional scope of label；The spacing of the mining position and underground water collecting pipe of guarantee excavator is while excavation
20~30cm, and reduce when close to underground utilities the speed of excavator；
Step 2: the second drainpipe is installed:
A, manually the outer wall soil of underground water collecting pipe is cleared up with scoop, is rinsed after cleaning with water, is then wiped
Completely, then with paint protection is sealed to underground utilities, and carries out wrapping processing with geotextiles；
B, the second drainpipe is uniformly installed on the top surface of underground water collecting pipe, it will be between the second drainpipe and underground water collecting pipe
Junction be sealed processing, locating support then is installed on the second drainpipe, the second drainpipe and underground water is made to converge
Pipe keeps vertical；
C, filling soil buries underground water collecting pipe in foundation pit, and tamps；When burying underground water collecting pipe, pays attention to holding the
The top of two drainpipes is exposed；
Step 3: reservoir is constructed:
A, second row water pipe port position is avoided, formwork is carried out, then forms the reservoir that opening is arranged at top with concreting；
B, after maintenance is fully cured to concrete, demoulding drills on the side wall of reservoir and installs the first drainpipe, and passes through
Reservoir is connected to by pipeline with the port of the second reserved drainpipe；First drainpipe is arranged along the sidewalls vertical of foundation pit, length
Degree is more than or equal to the distance between reservoir bottom surface to ground；
C, covered toward the top open part of reservoir and be provided with the cover board of jack, then in foundation pit filling soil to reservoir
Roof flushes, compacting；
Step 4: rainwater purification layer is constructed:
Prefabricated clean unit is laid at the top of reservoir；
The clean unit includes the shell closed at both ends of hollow tube-shape, and several permeable holes are provided on the roof of shell；Institute
State and be arranged in parallel with upper spacer and lower clapboard in shell, the upper spacer and lower clapboard by the inner cavity of shell be divided into collection chamber,
Purify cavity and drainage lumens；The drainage tube that there is opening at several both ends is provided in the shell along its length, it is described to draw
The bottom end of flow tube is fixed on lower clapboard, top stretched in collection chamber through upper spacer and the roof of end and shell it
Between there are spacing；Filter layer made of being filled as filler is provided in the purify cavity, the drainage tube is located inside purify cavity
Several sepage micropores are provided on the circumferential side wall divided；The aqueduct being connected to drainage lumens is provided on the bottom wall of the shell；
When laying, make to be bonded each other between the side wall of the shell of clean unit, while aqueduct being made to be inserted into corresponding positions on cover board
In the jack set；
Step 5: rainwater penetrating layer is constructed:
A, in one layer of water-permeable brick of the top surface of rainwater purification layer tiling, permeable brick layer is formed；
B, it is laid with water supply network in the top surface of permeable dress brick layer, the water outlet of the water inlet end of water supply network and external water pump is connected
It connects, while the water inlet end of water pump being connect with the top of the first reserved drainpipe；
C, paving planting soil is uniformly filled out on the surface of permeable brick layer, forms planting soil layer；And green plant is planted in planting soil layer, it completes to apply
Work.
By using above-mentioned technical proposal, the drainage system constructed has savings and drain function, can be to purification
Rainwater is recycled afterwards；It is high to drain purification efficiency, when precipitation abruptly increase is still able to maintain efficient drainage efficiency, can effectively subtract
Few bottom surface ponding.
In conclusion the invention has the following advantages:
1, rainwater is successively stored in reservoir after rainwater penetrating layer, rainwater purification layer are by filtration, purification, can pass through
The discharge of one drainpipe is reused, and realizes water storage water storage and to rain water reuse；
2, drainage tube is set in clean unit, and when precipitation abruptly increase or clean unit filter efficiency decline, rainwater can be via
Drainage tube flows directly into drainage lumens, and drainage efficiency is high, can effectively avoid excess surface water caused by precipitation abruptly increase etc. or
Waterlogging phenomenon；
3, the construction method of the corresponding open drainage system with a kind of above-mentioned sponge city of the present invention, the drainage system constructed
Water storage, water storage function are had both, good to the adaptability of environment, efficient drainage efficiency can still be maintained in when high precipitation, effectively
Reduce excess surface water or the generation of waterlogging.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the drainage system in sponge city in embodiment 1；
Fig. 2 is the structural schematic diagram of water supply network in embodiment 1；
Fig. 3 is the cross-sectional view of clean unit in embodiment 1；
Fig. 4 is the top view of clean unit in embodiment 1.
In figure: 1, rainwater penetrating layer；11, planting soil layer；12, permeable brick layer；2, rainwater purification layer；21, clean unit；
211, shell；2111, top plate；21111, permeable hole；2112, collection chamber；2113, purify cavity；2114, drainage lumens；2115, bar shaped
Fin；2116, strip-shaped clamp groove；212, upper spacer；213, lower clapboard；214, drainage tube；2141, sepage micropore；215, filter layer；
2151, fibrous layer；2152, fine sand layer；2153, pebble layer；216, aqueduct；3, reservoir；31, jack；4, the first draining
Pipe；5, the second drainpipe；6, water pump；7, water supply network；71, short tube；72, connector；721, water supply hole；8, underground water converges
Pipe.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment 1:
A kind of drainage system in sponge city, referring to Fig.1 comprising rainwater penetrating layer 1 is set to 1 lower section of rainwater penetrating layer
Rainwater purification layer 2 and the reservoir 3 for being set to 2 lower section of rainwater purification layer.The first drainpipe 4 and are communicated on reservoir 3
Two drainpipes 5, the first drainpipe 4 is with 3 connectivity part of reservoir close to the bottom wall of reservoir 3, the second drainpipe 5 and reservoir 3
Connectivity part is at the roof of reservoir 3,8 phase of underground water collecting pipe of the one end of the second drainpipe 5 far from reservoir 3 and city
Connection.Excess surface water or rainwater infiltrate into rainwater purification layer 2 via rainwater penetrating layer 1, are filtered in rainwater purification layer 2
It is imported in reservoir 3 after purification.Reservoir 3 plays the role of carrying out rainwater accumulation storage, and clean rainwater can be via
First drainpipe 4 is exported utilization；When water level is higher than the nozzle of the second draining in reservoir 3, the water storage of reservoir 3 is continued to flow into
The rainwater in pond 3 can flow into the underground water collecting pipe 8 in city via the second drainpipe 5 and drain.
Referring to Fig.1, rainwater penetrating layer 1 includes being set to the permeable brick layer 12 at 2 top of rainwater purification layer and being set to permeable
Planting soil layer 11 in brick layer 12.Permeable brick layer 12 is spliced by water-permeable brick, and permeable effect is good and plantation can be effectively prevented
The soil body of soil layer 11 is lost.Planting soil layer 11 can be used for planting green plant, can be right using the filterability of green plant and soil itself
The rainwater flowed through plays preliminary filtering function.
Referring to Fig.1, also embedding in planting soil layer 11 to have for planting the water supply network 7 to supply water to be green.First drainpipe 4 is separate
One end of reservoir 3 is connected with water pump 6, and the water outlet of water pump 6 is connected to by pipeline with water supply network 7, can be incited somebody to action using water pump 6
The rainwater stored in reservoir 3 is drawn into water supply network 7, for green plant growth.According to the actual situation, water pump 6 can be set
In inspection shaft, bottom surface can also be placed outside.Water pump 6 is external setting in the present embodiment, to water pump 6 when facilitating failure
It is replaced or is repaired.
Referring to Fig. 2, water supply network 7 is spliced in cellular latticed by several short tubes 71.The connection of short tube 71
Place is provided with hollow spherical connector 72, is threadedly coupled between the end and connector 72 of short tube 71 and adjacent two short
Folded acute angle is 60 ° between the axis of pipe 71.Water supply hole 721 is evenly distributed on connector 72, the rain into water supply network 7
Water is finally flowed out via the water supply hole 721 on connector 72, for green plant growth.It is supplied water using the boxwork of the present embodiment
Pipe network 7 supplies water, and since a connector 72 is evenly distributed, water supply coverage arranges relative close each other, to greatly reduce
Water supply blind area.
Referring to Figure 1 and Figure 3, rainwater purification layer 2 is spliced by several clean units 21.Each clean unit 21 includes
The box-shaped shell 211 of rectangle.The top plate 2111 of shell 211 is detachably arranged and is bolted to connection, and top plate 2111 is gone into battle
Column are provided with several permeable holes 21111, for rainwater transmission.The upper spacer for being parallel to top plate 2111 is additionally provided in shell 211
212 and lower clapboard 213, upper spacer 212 is the porous disc with holes of activity setting, the inner sidewall of lower clapboard 213 and shell 211 it
Between be fixedly connected.Upper spacer 212 and lower clapboard 213 inner cavity of shell 211 is divided into the collection chamber 2112 on top, middle part it is net
Change the drainage lumens 2114 of chamber 2113 and bottom.The bottom of drainage lumens 2114 is connected to the aqueduct 216 for rainwater to be discharged, reservoir
The jack 31 being inserted into for aqueduct 216 is provided on 3 roof.When being laid with clean unit 21, the aqueduct 216 of its bottom is inserted into
Jack 31 to 3 roof of reservoir.
Referring to Fig. 3, the inner cavity of shell 211, which is provided with several both ends along the direction perpendicular to top plate 2111, opening
The bottom end of drainage tube 214, drainage tube 214 is arranged through lower clapboard 213 and is threadedly coupled between lower clapboard 213, and top is run through
Upper spacer 212 stretches in collection chamber 2112.The top of drainage tube 214 is not contacted with the top plate 2111 of shell 211, drainage tube
214 are evenly distributed with sepage micropore 2141 on the excircle side wall of 2113 inner part of purify cavity.
Referring to Fig. 3, filter layer 215 made of being filled as filler is provided in purify cavity 2113, filter layer 215 includes under
The supreme fibrous layer 2151 set gradually, fine sand layer 2152 and pebble layer 2153.Fibrous layer 2151 has polypropylene fibre filling
It forms, fine sand layer 2152 and pebble layer 2153 are filled by clean natural river sand, cobblestone respectively.Fibrous layer 2151,
The thickness of fine sand layer 2152 and pebble layer 2153 is than being about 1:1:1.Rainwater penetrates into collection chamber by the top plate 2111 of shell 211
In 2112, then enter in purify cavity 2113 through upper spacer 212, by the filtration, purification of filter layer 215 from drainage tube 214
Sepage micropore 2141 enter drainage tube 214, then drainage lumens 2114 are flowed into from the opening of 214 bottom end of drainage tube, finally via leading
It is as shown in Figure 1 that water pipe 216 imports reservoir 3().It is put aside to reduce rainwater in drainage lumens 2114, the bottom of drainage lumens 2114
It is set as funnel-form.
Referring to Fig. 4, be provided with bar shaped fin 2115 on the adjacent two sidewalls of shell 211, bar shaped fin 2115 it is transversal
Face shape is trapezoidal.The strip-shaped clamp groove 2116 being caught in for bar shaped fin 2115 is provided on other two adjacent side walls.Paving
When filling clean unit 21, the bar shaped fin 2115 of 211 side of shell is made to be caught in the strip-shaped clamp groove 2116 in adjacent housings 211 i.e.
It can.By the cooperation of bar shaped fin 2115 and strip-shaped clamp groove 2116, the arrangement tightness between adjacent housings 211 can be increased,
Avoid the occurrence of skew.
Working principle is as follows:
When drainage system works, then the primary filtration that rainwater successively passes through planting soil layer 11 and permeable brick layer 12 penetrates into rainwater net
Change layer 2.Collection chamber 2112 is flowed into from the top plate 2111 of clean unit 21, then enters purify cavity 2113 via upper spacer 212.Net
Change in chamber 2113, rainwater successively passes through the filtering of pebble layer 2153, fine sand layer 2152 and fibrous layer 2151, is filtered out impurity.
Rainwater by filtering enters in drainage tube 214 from the sepage micropore 2141 on drainage tube 214, from opening for 214 bottom end of drainage tube
Mouth flows into drainage lumens 2114.Finally, it is imported into reservoir 3 through aqueduct 216.
When rainfall is larger or the filter efficiency of filter layer 215 reduces, the rainwater in collection chamber 2112 can be put aside, when
When savings is higher than the opening on 214 top of drainage tube to water level.Rainwater is directly fed to drainage lumens 2114 via drainage tube 214
It is interior.To effectively prevent the transition savings of rainwater, excess surface water or waterlogging are caused.
The first drainpipe 4 and the second drainpipe 5 are communicated on reservoir 3, the connectivity part of the former and reservoir 3 is close to water storage
Roof of the connectivity part of the bottom wall in pond 3, the latter and reservoir 3 close to reservoir 3.When water is excessive, water level is increased in reservoir 3
When to the opening for reaching the second drainpipe 5, excessive water can be fed to the underground water confluence in city via the second drainpipe 5
Pipe 8 is drained；When conventional water, so that possessing certain reservoir storage in reservoir 3 always.First drainpipe 4 be embedded in plantation
Water supply network 7 in soil layer 11 is connected to, and the rainwater that reservoir 3 is accumulated can be drawn into water supply network 7 using water pump 6, for
The green plant growth being planted in planting soil layer 11.
Embodiment 2:
A kind of construction method of the drainage system in sponge city as described in Example 1, specifically comprises the following steps:
Step 1: foundation pit excavates
According to the laying depth of underground water collecting pipe 8 set foundation pit cutting depth, using excavator label regional scope
Interior excavation foundation pit.The spacing of the mining position and underground water collecting pipe 8 that guarantee excavator while excavation is 20~30cm, and
The speed of excavator is reduced when close to underground utilities.
Step 2: the second drainpipe is installed
Manually the outer wall soil of underground water collecting pipe 8 is cleared up with scoop, is rinsed after cleaning with water, is then wiped
Only, protection then with paint is sealed to underground utilities, and carries out wrapping processing with geotextiles, to prevent in work progress over the ground
Collecting pipe 8 is lauched to damage.
According to design requirement, the second drainpipe 5 is uniformly installed on the top surface of underground water collecting pipe 8, by the second drainpipe 5
Junction between underground water collecting pipe 8 is sealed processing.Then locating support is installed on the second drainpipe 5, makes
Two drainpipes 5 keep vertical with underground water collecting pipe 8.
Underground water collecting pipe 8 is buried and is tamped by filling soil in foundation pit.When burying underground water collecting pipe 8, pay attention to protecting
The top for holding the second drainpipe 5 is exposed.
Step 3: reservoir is constructed
5 port position of the second drainpipe is avoided, formwork is carried out, is then had with concreting formation top opening, rectangle
Reservoir 3.When pouring, notice that the bottom wall by reservoir 3 is made into towards the inclined inclined-plane in side.
After maintenance is fully cured to concrete, demoulding is drilled on the side wall of reservoir 3 for installing the first drainpipe
4.First drainpipe 4 is arranged along the sidewalls vertical of foundation pit, and length is greater than the distance between 3 bottom surface of reservoir to ground.Using
Same method drills on the side wall of reservoir 3, and passes through pipeline for the port of reservoir 3 and the second reserved drainpipe 5
Connection, junction is both needed to do sealing water-proofing treatment.
Finally, the top open part in reservoir 3 covers and is provided with the concrete prefabricated cover board of jack 31.Then, toward foundation pit
Interior filling soil is tamped to flushing with the roof of reservoir 3.
Step 4: rainwater purification layer is constructed:
Prefabricated clean unit 21 is laid at the top of reservoir 3.
The shell 211 closed at both ends of clean unit 21 including hollow tube-shape, and if being provided with and parching on the roof of shell 211
Water hole 21111；Upper spacer 212 and lower clapboard 213, the upper spacer 212 and lower clapboard are arranged in parallel in the shell 211
The inner cavity of shell 211 is divided into collection chamber 2112, purify cavity 2113 and drainage lumens 2114 by 213；Along its length in the shell 211
Degree direction is provided with the drainage tube 214 that there is opening at several both ends, and the bottom end of the drainage tube 214 is fixed at lower clapboard
On 213, top stretches in collection chamber 2112 through upper spacer 212 and there are spacing between end and the roof of shell 211；Institute
State be provided in purify cavity 2113 filled as filler made of filter layer 215, the drainage tube 214 is located inside purify cavity 2113
Several sepage micropores 2141 are provided on the circumferential side wall divided；It is provided on the bottom wall of the shell 211 and is connected to drainage lumens 2114
Aqueduct 216.
When laying, the bar shaped fin 2115 on the side wall of the shell 211 of clean unit 21 is made to be caught in 211 side wall of adjacent housings
On strip-shaped clamp groove 2116, while be inserted into aqueduct 216 in the jack 31 of corresponding position on cover board.
Filled with soil closely knit in gap around clean unit 21 between foundation pit.
Step 5: rainwater penetrating layer is constructed
In one layer of water-permeable brick of the top surface of rainwater purification layer 2 tiling, permeable brick layer 12 is formed.
It is laid with water supply network 7 in the top surface of permeable dress brick layer, by going out for the water inlet end of water supply network 7 and external water pump 6
Water end (W.E.) connection, while the water inlet end of water pump 6 being connect with the top of the first reserved drainpipe 4.
Finally, uniformly filling out paving planting soil on the surface of permeable brick layer 12, planting soil layer 11 is formed, and plant in planting soil layer 11
The green plant of kind, completes construction.
Above-mentioned specific embodiment is only explanation of the invention, is not limitation of the present invention, art technology
Personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as
All by the protection of Patent Law in scope of the presently claimed invention.
Claims (10)
1. a kind of drainage system in sponge city, it is characterised in that: including rainwater penetrating layer (1), be located under rainwater penetrating layer (1)
The rainwater purification layer (2) of side and the reservoir (3) being set to below rainwater purification layer (2)；
Wherein, rainwater purification layer (2) is spliced by several clean units (21)；The clean unit (21) includes hollow tube-shape
Shell (211) closed at both ends, and several permeable holes (21111) are provided on the roof of shell (211)；The shell (211)
It is inside arranged in parallel with upper spacer (212) and lower clapboard (213), the upper spacer (212) is porous disc；The upper spacer (212)
With lower clapboard (213) by the inner cavity of shell (211) be divided into top collection chamber (2112), middle part purify cavity (2113) and bottom
The drainage lumens (2114) in portion；It is provided with the drainage tube that there is opening at several both ends along its length in the shell (211)
(214), the bottom end of the drainage tube (214) is fixedly installed through lower clapboard (213), and top is stretched to through upper spacer (212)
In collection chamber (2112) and there are spacing between end and the roof of shell (211)；Be provided in the purify cavity (2113) by
Filter layer (215) made of filler filling, the drainage tube (214), which is located on the circumferential side wall of purify cavity (2113) inner part, opens
There are several sepage micropores (2141)；The aqueduct being connected to drainage lumens (2114) is provided on the bottom wall of the shell (211)
(216), the jack (31) for aqueduct (216) insertion is provided on the roof of the reservoir (3)；
The reservoir (3) is communicated with the first drainpipe (4), and first drainpipe (4) is connected to far from the one end of reservoir (3)
There is water system.
2. a kind of drainage system in sponge city according to claim 1, it is characterised in that: filter layer (215) packet
Include the fibrous layer (2151) set gradually from the bottom to top, fine sand layer (2152) and pebble layer (2153).
3. a kind of drainage system in sponge city according to claim 2, it is characterised in that: the cross of the shell (211)
Cross sectional shape is rectangle, is provided with along its length on adjacent two sidewalls bar shaped fin (2115), in addition two sides adjacents
The strip-shaped clamp groove (2116) being caught in for the bar shaped fin (2115) is provided on wall.
4. a kind of drainage system in sponge city according to claim 1, it is characterised in that: the rainwater penetrating layer (1)
Including the permeable brick layer (12) being set to above rainwater purification layer (2), it is provided on the permeable brick layer (12) green for planting
The planting soil layer (11) of plant.
5. a kind of drainage system in sponge city according to claim 1, it is characterised in that: the water system includes water
Pump (6) and water supply network (7)；The water inlet end of the water pump (6) is connected to the first drainpipe (4), water outlet and water supply network (7)
Connection；The water supply network (7) is embedded in planting soil layer (11).
6. a kind of drainage system in sponge city according to claim 5, it is characterised in that: the water supply network (7) by
Several short tubes (71) are spliced and grid-shaped；Hollow spherical shape is provided at the node of the water supply network (7)
Connector (72) is provided with several water supply holes (721) on the connector (72).
7. a kind of drainage system in sponge city according to claim 6, it is characterised in that: the water supply network (7) is in
Cellular Networks trellis, folded acute angle is 60 ° between the axis of adjacent two short tube (71).
8. a kind of drainage system in sponge city according to claim 1, it is characterised in that: the reservoir (3) also connects
It is connected with the second drainpipe (5), second drainpipe (5) is far from the one end of reservoir (3) and the underground water collecting pipe (8) in city
Connection；The opening of one end that first drainpipe (4) is connected to reservoir (3) close to reservoir (3) bottom wall, described second
Roof of the opening of one end that drainpipe (5) is connected to reservoir (3) close to reservoir (3).
9. a kind of drainage system in sponge city according to claim 6, it is characterised in that: the reservoir (3) it is interior
Bottom wall is provided towards the first drainpipe (4) inclined inclined-plane in direction.
10. a kind of construction method of sponge sewerage system as described in claim 1, it is characterised in that: including walking as follows
Suddenly,
Step 1: foundation pit excavates: the cutting depth of foundation pit is set according to the laying depth of underground water collecting pipe (8), using excavation
Machine excavates foundation pit in the regional scope of label；Guarantee mining position and underground water collecting pipe (8) of excavator while excavation
Spacing be 20~30cm, and the speed of excavator is reduced when close to underground utilities；
Step 2: the second drainpipe is installed:
A, manually the outer wall soil of underground water collecting pipe (8) is cleared up with scoop, is rinsed after cleaning with water, is then wiped
It wipes completely, then protection is sealed to underground utilities with paint, and carry out wrapping processing with geotextiles；
B, the second drainpipe (5) are uniformly installed on the top surface of underground water collecting pipe (8), by the second drainpipe (5) and underground water
Junction between collecting pipe (8) is sealed processing, then installs locating support on the second drainpipe (5), makes second row
Water pipe (5) is vertical with underground water collecting pipe (8) holding；
C, filling soil buries underground water collecting pipe (8) in foundation pit, and tamps；When burying underground water collecting pipe (8), pay attention to
Keep the top of the second drainpipe (5) exposed；
Step 3: reservoir is constructed:
A, the second drainpipe (5) port position is avoided, formwork is carried out, then forms the water storage that opening is arranged at top with concreting
Pond (3)；
B, after maintenance is fully cured to concrete, demoulding drills on the side wall of reservoir (3) and installs the first drainpipe (4),
And reservoir (3) is connected to the port of reserved the second drainpipe (5) by pipeline；First drainpipe (4) is along the side of foundation pit
Wall is vertically arranged, and length is more than or equal to the distance between reservoir (3) bottom surface to ground；
C, the top open part toward reservoir (3), which covers, is provided with the cover boards of jack (31), then in foundation pit filling soil to
The roof of reservoir (3) flushes, compacting；
Step 4: rainwater purification layer is constructed:
Prefabricated clean unit (21) are laid at the top of reservoir (3)；
The clean unit (21) includes the shell (211) closed at both ends of hollow tube-shape, and is provided on the roof of shell (211)
Several permeable holes (21111)；Be arranged in parallel with upper spacer (212) and lower clapboard (213) in the shell (211), it is described on every
The inner cavity of shell (211) is divided into collection chamber (2112), purify cavity (2113) and drainage lumens by plate (212) and lower clapboard (213)
(2114)；It is provided with the drainage tube (214) that there is opening at several both ends along its length in the shell (211), it is described
The bottom end of drainage tube (214) is fixed on lower clapboard (213), and top stretches to collection chamber through upper spacer (212)
(2112) in and there are spacing between end and the roof of shell (211)；It is provided in the purify cavity (2113) and is filled out by filler
Filter layer made of filling (215), the drainage tube (214) be located on the circumferential side wall of purify cavity (2113) inner part be provided with it is several
Sepage micropore (2141)；The aqueduct (216) being connected to drainage lumens (2114) is provided on the bottom wall of the shell (211)；
When laying, make to be bonded each other between the side wall of the shell (211) of clean unit (21), while is inserted into aqueduct (216)
On to cover board in the jack (31) of corresponding position；
Step 5: rainwater penetrating layer is constructed:
A, in one layer of water-permeable brick of the top surface of rainwater purification layer (2) tiling, permeable brick layer (12) are formed；
B, water supply network (7) are laid in the top surface of permeable dress brick layer, by the water inlet end of water supply network (7) and external water pump (6)
Water outlet connection, while the water inlet end of water pump (6) being connect with the top of the first drainpipe (4) reserved；
C, paving planting soil is uniformly filled out on the surface of permeable brick layer (12), is formed planting soil layer (11)；And it is planted in planting soil layer (11)
The green plant of kind, completes construction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810961168.7A CN109024833B (en) | 2018-08-22 | 2018-08-22 | Drainage system of sponge city and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810961168.7A CN109024833B (en) | 2018-08-22 | 2018-08-22 | Drainage system of sponge city and construction method thereof |
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| CN109024833B CN109024833B (en) | 2020-05-26 |
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| CN111560816A (en) * | 2020-05-21 | 2020-08-21 | 中建水务环保有限公司 | Permeable reconstruction technology for impervious block pavement |
| CN111648437A (en) * | 2020-07-07 | 2020-09-11 | 汇绿园林建设发展有限公司 | Rainwater secondary use formula rainwater garden suitable for sponge city construction |
| CN111837888A (en) * | 2020-08-03 | 2020-10-30 | 铜陵学院 | Energy-conserving water jet equipment in building gardens |
| CN112056109A (en) * | 2020-07-23 | 2020-12-11 | 浙江同济科技职业学院 | Automatic irrigation device for rainwater greening and construction method thereof |
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| CN112056109A (en) * | 2020-07-23 | 2020-12-11 | 浙江同济科技职业学院 | Automatic irrigation device for rainwater greening and construction method thereof |
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