CN106759825A - A kind of construction method of sponge urban green space water storage system - Google Patents
A kind of construction method of sponge urban green space water storage system Download PDFInfo
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- CN106759825A CN106759825A CN201611154525.6A CN201611154525A CN106759825A CN 106759825 A CN106759825 A CN 106759825A CN 201611154525 A CN201611154525 A CN 201611154525A CN 106759825 A CN106759825 A CN 106759825A
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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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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
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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
- E03F1/002—Methods, systems, or installations for draining-off sewage or storm water with disposal into the ground, e.g. via dry wells
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
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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
- E03F5/105—Accessories, e.g. flow regulators or cleaning devices
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F2201/00—Details, devices or methods not otherwise provided for
- E03F2201/10—Dividing the first rain flush out of the stormwater flow
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- 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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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Abstract
The invention discloses a kind of construction method of sponge urban green space water storage system, comprise the following steps：A () sets up foundation ditch；B () cistern is buried；C () ground water storage is in place；D () filter well is buried；(e) tile work；F () afforests.Present invention construction is simple, and difficulty is low, and construction is orderly, and construction quality is easily controllable, and the construction equipment being related to is few, and construction cost is low, and osmotic effect is good, alleviates municipal drainage pressure, increases groundwater resources amount, reduces Urban Storm Flood amount, improves urban environment.
Description
Technical field
The invention belongs to sponge city water resource utilize field, more particularly to a kind of sponge urban green space water storage system is applied
Work method.
Background technology
With the propulsion of Urbanization Construction, increasing for hardened ground changes original water regime, causes rainfall runoff
Increase, the frequent ponding in road surface, the frequent large area ponding in urban, while rain flood peak value becomes big, soil moisture content is reduced, underground
Water level decreasing phenomenon aggravation etc..In addition, China's Urban Water Shortage Problem of Cities is increasingly serious, northern area resource-type water shortage, southern area
Water quality type water shortage.In such a case, government puts forward to build the target in " sponge city ", is given in each side such as policy, finances
To support.
Sponge city, as the term suggests, city is such as sponge, in duration of raining, can quickly absorb, accumulate, permeating,
Purifying rainwater, reduces rainwater and forms runoff, recharge of groundwater；Simultaneously when not raining, by a series for the treatment of measures and supporting
Pipe network facilities, the water of accumulation is used, so as to allow rainwater resource to be preferably dissolved into the supply and drain water system in city.Make
Rational sponge urban water system, can both be effectively protected the original ecosystem in city, it is also possible to slowly recover original
The destroyed ecosystem, simultaneously for the Development control area of whole urbanization influence drop to it is lower.
Traditional sponge urban construction pattern, is everywhere hard surface.Whenever heavy rain, " the ash such as pipe duct, pumping plant is relied primarily on
Color " facility carrys out draining, and main planning and design concept is controlled to " quick to exclude " and " end concentration ", and rainwater mainly passes through draining
Facility is drained, it is impossible to penetrate into underground, is often resulted in and is met rain flooded, and drought and waterlogging racing does not meet the requirement of sponge urban construction.
The content of the invention
Present invention aim at above-mentioned technical problem present in solution prior art, there is provided a kind of sponge urban green space stores
The construction method of water system, construction is simple, and difficulty is low, and construction is orderly, and construction quality is easily controllable, and the construction equipment being related to is few,
Construction cost is low, and osmotic effect is good, alleviates municipal drainage pressure, increases groundwater resources amount, reduces Urban Storm Flood amount, improves city
City's environment.
In order to solve the above-mentioned technical problem, the present invention is adopted the following technical scheme that：
The construction method of a kind of sponge urban green space water storage system, it is characterised in that comprise the following steps：
A () sets up foundation ditch：According to design working drawing, excavation pit carries out the protection of foundation ditch crater wall to projected depth, to hole bottom
Cleared up, flattened and basic unit is suppressed, waterproofing geomembrane is set on basic unit upper berth, and on waterproofing geomembrane backfill 5~
8cm thick original soil protective layer, tamps smooth, it is ensured that foundation ditch flatness and perpendicularity, can improve anti-seepage effect, and crater wall protection can be prevented
Only foundation ditch occur collapsing, the generation of the phenomenon that comes down, so as to ensure construction quality；
B () cistern is buried：Build cistern and embedded drainpipe by laying bricks or stones on original soil protective layer, cistern is built by laying bricks or stones after finishing and used
In waterproofing geomembrane is wrapped in, it is 4~5m often to arrange draining tube pitch, and the unification of each row's drainpipe water side is docked to many siphunculus
On, cistern is accessed into many siphunculus water sides, backfilled with original soil and bury cistern, backfill height is 550~600mm, is often filled out
150~200mm carries out hand compaction, and cistern is wrapped up with waterproofing geomembrane, can prevent the rainwater of cistern memory storage
Ooze out outward, moreover it is possible to prevent original soil around from invading cistern, reduce the squeezing action that cistern is subject to, play a protective role, point
Layer compacting can improve the packing banketed, so as to improve earthing intensity, prevent foundation pit collapse；
C () ground water storage is in place：Water tank and suction pump are separately fixed on the ground in the range of the 3m of foundation ditch periphery, are taken out
The water side of water pump PB pipes connect water tank, and protection support fixation is carried out to PB pipes, and the water inlet end of suction pump is connected with pvc pipe
The water side of cistern is connect, the rainwater collected in cistern is pumped into water tank by suction pump is stored, storage
Rainwater can replace Tap Water from Some Cities and underground water, be applied to green area irrigation, road cleaning, supplement water landscape, flushing lavatory
Institute etc., it is also possible to as the make-up water source of park landscape water body, substantially increases the resource utilization efficiency of rainwater, change give up into
Treasured, alleviates the problem of water resources shortage, reduces soil erosion, all has to building the ecological agriculture, ecocity, environmental protection
Very great meaning；
D () filter well is buried：Position laying filter well according to drainpipe, the sky between adjacent filter well is backfilled with original soil
Gap, compacting is smooth, then lays collector pipe, and collector pipe one end is connected the well lid of filter well, and filter well also can be used to collect rain
Water, when collecting the upper limit more than filter well, unnecessary rainwater is conveyed downwards by drainpipe, the unnecessary rainwater whole being finally collected into
The unified storage into cistern；
(e) tile work：Osmos tube is wrapped up with permeable geotextiles in advance, then by the osmos tube after parcel and the mouth of pipe of collector pipe
Docking, is reinforced, and the osmos tube mouth of pipe is flushed with ground, is laid out according to osmos tube, and seepage ditch region is marked with gray line, and seep water furrow width
Then degree lays loaded filter more than infiltration 50~80mm of pipe diameter between adjacent seepage ditch region, loaded filter from the bottom to top according to
Secondary is the thick metallings of 100~150mm, the gravel layer of 100~150cm thickness and the thick sandy soil layers of 200~250mm, divides tile work
Region and greenery patches region, greenery patches area distribution are spread in the both sides in tile work region, tile work region using water-permeable brick and pervious concrete
Build, after laying is finished, tamp smooth and water seasoning, water-permeable brick and pervious concrete have good gas permeability, water penetration, can
Make to be oozed under rainwater is rapid, so as to alleviate the pressure of municipal drainage and flood fighting, after rainwater enters loaded filter, rainwater is sent out in loaded filter
Raw migration, rainwater can only downwards be permeated by hole, and flow velocity is slow, and the residence time is long, and metalling, gravel layer and sandy soil layer have suction
Attached ability, the organic granular absorption in rainwater is degraded by the anaerobe grown in hole, and the rainwater after purification is stored in
In thin solum, the water content of thin solum can be increased, regulated the climate, contained urban heat land effect, while can also reduce runoff
Crest discharge and flood threaten, it is super to ooze part into greenery patches region, rainwash is reduced to greatest extent；
F () afforests：Chisel removes the sandy soil of greenery patches region surface, forms both sides to seepage ditch region slope, and the control gradient 2%~
3%, turf, plantation shrub are then laid in the region of greenery patches, the thick centimetres of 80~100mm are then laid in seepage ditch region
Rock layers, compacting is smooth, by osmos tube beyond the part severing of centimetre rock layers, is allowed to maintain an equal level with centimetre rock layers top surface, then with tree
Pond cover plate covers the osmos tube mouth of pipe, and slope landform causes that the rainwater beyond water-permeable brick penetrating power, to seepage ditch venting, is accelerated
Drainage efficiency, rainwater enters in osmos tube along the hole of tree pond cover plate, then is conveyed rainwater downwards by osmos tube, and rainwater is green
In the flow process of ground region, the plant in greenery patches plays interception function to rainwater, when increasing delay of the rainwater in the region of greenery patches
Between, root system of plant can play catharsis to the suspension in rainfall runoff, impurity etc., and rainwater is infiltrated on the spot, directly penetrate into anti-
Filtering layer, by loaded filter adsorption filtration, the rainwater after purification is stored in thin solum, not only increases the water resource storage of soil
Amount, decreases the water for irrigation amount in greenery patches, on the other hand makes full use of soil to cut dirty, filtration to rainwater, under raising
The quality of rainwater is oozed, improves groundwater environment.
Further, the sandy soil that go will be dug in step (f) and will be piled into mound, laterally set one every 2~3m, using micro-
Fluctuating extension time for being flowed in the region of greenery patches of rainwater of shape and distance, make rainwater farthest bleed back, prevent rainfall compared with
Soil erosion is caused when big.
Further, the gutter that width is 30~50mm is excavated every 3~5m in the region of greenery patches in step (f),
Gutter direction is consistent with slope direction, and guide functions are played in gutter so that rainwater mitigates quickly to seepage ditch direction venting
Greenery patches region enters consolidation pressure, and rainwater directly is entered into seepage ditch, conveys unnecessary rainwater downwards by osmos tube.
Further, it is laying starting point with foundation ditch center in step (a) when waterproofing geomembrane is laid, is laid to both sides, draws
Pressure is neat after flat, is fixed with cement nail every 2~3m, prevents waterproofing geomembrane fold projection, it is to avoid wasted during laying, saves
Material cost.
Further, in step (d) before filter well is laid, Jing Chi is first fixed, the side of mounting groove is directed at according to fixed lobe
Formula loads in well pond water filter well plate, then to cement mortar is injected in mounting groove, while clearing up the slurries for overflowing mounting groove, then incites somebody to action
Well lid is shelved on Jing Chi, and filter well makees Stability Analysis of Structures, and intensity reliability, easy construction, installation effectiveness is high.
Further, filter well includes Jing Chi, water filter well plate and well lid in step (d), and well lid is located on Jing Chi, water filter well plate
In well pond, permeable hole is evenly distributed with water filter well plate, fixed lobe is symmetrically distributed with water filter well plate, it is symmetrical in well pond
Mounting groove is distributed with, mounting groove matches with fixed lobe, the side of Jing Chi is provided with discharge outlet, and well lid is provided with water inlet, applies
Man-hour only need to be directed at the mode of mounting groove and load in well pond water filter well plate according to fixed lobe, then to injecting water in mounting groove
Mud so that water filter well plate is bonded and fixed on the inwall of Jing Chi, simple to operate, quick effective, efficiency of construction is high；Water filter well plate
Play a part of to block rainwater, rainwater can only downwards continue infiltration by permeable hole, and the fixed particle remained in rainwater is stopped
In water filter well plate surface, it is impossible to fall, impurity has been separated；Filter well as collect rainwater container, by rainwater storage in underground,
Prevent take up ground space.
Further, the method for water seasoning is to cover full wafer tile work region, and water seasoning with stack of rice straw in step (e),
Curing time is 1~2 day, and stack of rice straw moistening is ensured during maintenance, and forbids idler to trample thereon, and water seasoning can ensure permeable
The intensity of brick and pervious concrete, prevents crack, keeps the water penetration of water-permeable brick.
The present invention is by adopting the above-described technical solution, have the advantages that：
Present invention construction is simple, and difficulty is low, and construction is orderly, and construction quality is easily controllable, and the construction equipment being related to is few, construction
Low cost, osmotic effect is good, using water-permeable brick and pervious concrete making, makes to be oozed under rainwater is rapid, super to ooze part and enter greenery patches
Region, the plant in greenery patches plays interception function to rainwater, increases holdup time of the rainwater in the region of greenery patches, root system of plant energy
Catharsis is played to the suspension in rainfall runoff, impurity etc., rainwater is infiltrated on the spot, directly penetrate into loaded filter, rainwater enters
After loaded filter, rainwater is migrated in loaded filter, and rainwater can only downwards be permeated by hole, and flow velocity is slow, and the residence time is long, broken
Rock layers, gravel layer and sandy soil layer have adsorption capacity, by the organic granular absorption in rainwater, by the micro- life of anaerobism grown in hole
Thing is degraded, and the rainwater after purification is stored in thin solum, can increase the water content of thin solum, regulate the climate, contain city
Tropical island effect, while the pollution and flood that can also reduce runoff are threatened, reaches the rainwater of seepage ditch then along tree pond cover plate
Hole enter in osmos tube, then rainwater is conveyed downwards by osmos tube, through collector pipe feeding filter well in, filter well is used as receipts
Collect the container of rainwater, by rainwater storage in underground, prevent take up ground space, water filter well plate plays a part of to block rainwater, rainwater
Infiltration can only downwards be continued by permeable hole, the fixed particle remained in rainwater is stopped in water filter well plate surface, it is impossible to fallen,
Impurity is separated.When amount of rainfall exceedes filter well collects the upper limit, unnecessary rainwater is conveyed downwards by drainpipe, final to collect
To unnecessary rainwater fully enter unified storage in cistern, the rainwater collected in cistern is pumped into by water storage by suction pump
Stored in tank, the rainwater of storage can replace Tap Water from Some Cities and underground water, be applied to green area irrigation, road cleaning,
Supplement water landscape, toilet flushing etc., it is also possible to as the make-up water source of park landscape water body, substantially increase the resource of rainwater
Change utilization ratio, turn waste into wealth, discontinuous, the unstable rainwater resource of space-time is converted into the stabilization for continuing water supply capacity
System, as be available for urban green space comprehensively utilize water resource, alleviate the problem of water resources shortage, to build the ecological agriculture,
Ecocity, environmental protection all have very great meaning.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is a kind of structural representation of sponge urban green space water storage system in the present invention；
Fig. 2 is the structural representation of filter well in the present invention；
Fig. 3 is the structural representation of water filter well plate in the present invention；
Fig. 4 is a kind of schematic flow sheet of the construction method of sponge urban green space water storage system of the invention.
In figure：1- foundation ditches；2- cisterns；3- drainpipes；The many siphunculus of 4-；5- water tanks；6- suction pumps；7- filter wells；8-
Jing Chi；9- water filter well plates；10- well lids；11- permeable holes；12- fixed lobes；13- mounting grooves；14- discharge outlet；15- water inlets；
16- collector pipes；17- osmos tubes；18- seepage ditch region；19- metallings；20- gravel layers；21- sandy soil layers；22- tile works region；
23- greenery patchess region；24- trees pond cover plate.
Specific embodiment
As shown in Figures 1 to 4, it is a kind of construction method of sponge urban green space water storage system of the invention, including following step
Suddenly：
A () sets up foundation ditch：According to design working drawing, excavation pit 1 carries out the protection of the crater wall of foundation ditch 1 to projected depth, prevents
Collapsing occurs in foundation ditch 1, the generation of the phenomenon that comes down, so as to ensure construction quality.Hole bottom is cleared up, flattened and basic unit is carried out
Suppression, waterproofing geomembrane is set on basic unit upper berth, and the thick original soil protective layers of 5~8cm are backfilled on waterproofing geomembrane, and compacting is flat
Whole, original soil protective layer can prevent from being destroyed in waterproofing geomembrane construction in later period, play a protective role.Ensure the flatness of foundation ditch 1
And perpendicularity, anti-seepage effect can be improved.It is laying starting point with the center of foundation ditch 1 when waterproofing geomembrane is laid, is laid to both sides,
Press neat after evening up, be fixed with cement nail every 2~3m, prevent waterproofing geomembrane fold projection, it is to avoid wasted during laying, section
Material saving cost.
B () cistern is buried：Build cistern 2 and embedded drainpipe 3 by laying bricks or stones on original soil protective layer, cistern 2 is built by laying bricks or stones and finished
In being wrapped in waterproofing geomembrane afterwards, cistern 2 is wrapped up with waterproofing geomembrane, the memory storage of cistern 2 can be prevented
Rainwater ooze out outward, moreover it is possible to prevent original soil around from invading cistern 2, reduce the squeezing action that is subject to of cistern 2, play protection
Effect.Often row's drainpipe 3 spacing is 4~5m, and the unification of each row's drainpipe 3 water side is docked on many siphunculus 4, and many siphunculus 4 are gone out
Water end (W.E.) accesses cistern 2, is backfilled with original soil and buries cistern 2, and backfill height is 550~600mm, often fills out 150~200mm and enters
Row hand compaction, compaction in layers can improve the packing banketed, so as to improve earthing intensity, prevent foundation ditch 1 from caving in.
C () ground water storage is in place：Water tank 5 and suction pump 6 are separately fixed at the ground in the range of the periphery 3m of foundation ditch 1
On, the water side of suction pump 6 connects water tank 5 with PB pipes, and protection support fixation is carried out to PB pipes, prevents suction pump 6 in row
PB pipes shake and wind during water, influence drainage efficiency.The water inlet end pvc pipe of suction pump 6 connects going out for cistern 2
, be pumped into the rainwater collected in cistern 2 in water tank 5 by suction pump 6 stored by water end (W.E.), and the rainwater of storage can replace
Tap Water from Some Cities and underground water, are applied to green area irrigation, road cleaning, supplement water landscape, toilet flushing etc., it is also possible to
As the make-up water source of park landscape water body, the resource utilization efficiency of rainwater is substantially increased, turned waste into wealth, alleviate water money
The deficient problem in source, reduces soil erosion, all has very great meaning to building the ecological agriculture, ecocity, environmental protection
Justice.
D () filter well is buried：Filter well 7 includes well pond 8, water filter well plate 9 and well lid 10, and well lid 10 is filtered on well pond 8
Well plate 9 is evenly distributed with permeable hole 11 in well pond 8 on water filter well plate 9, fixation is symmetrically distributed with water filter well plate 9 convex
Rise in 12, well pond 8 and be symmetrically distributed with mounting groove 13, mounting groove 13 matches with fixed lobe 12, and the side in well pond 8 is provided with draining
Mouthfuls 14, well lid 10 is provided with water inlet 15, and only the mode of mounting groove 13 need to be directed at by water filter well according to fixed lobe 12 during construction
Plate 9 loads in well pond 8, then to injecting cement mortar in mounting groove 13 so that water filter well plate 9 is bonded and fixed at the inwall in well pond 8
On, simple to operate, quick effective, efficiency of construction is high.Water filter well plate 9 plays a part of to block rainwater, and rainwater can only be by permeable
Hole 11 continues to permeate downwards, and the fixed particle remained in rainwater is stopped on the surface of water filter well plate 9, it is impossible to is fallen, has been separated miscellaneous
Matter.Filter well 7, by rainwater storage in underground, prevents take up ground space as the container for collecting rainwater.
Before filter well 7 is laid, well pond 8 is first fixed, the mode of mounting groove 13 is directed at by water filter well according to fixed lobe 12
Plate 9 loads in well pond 8, then to injecting cement mortar in mounting groove 13, while clear up the slurries for overflowing mounting groove 13, then by well lid
10 are shelved on well pond 8, and filter well 7 makees Stability Analysis of Structures, and intensity reliability, easy construction, installation effectiveness is high.According to drainpipe 3
Filter well 7 is laid in position, and drainpipe 3 is accessed the discharge outlet 14 in well pond 8, and the space between adjacent filter well 7 is backfilled with original soil,
Compacting is smooth, then lays collector pipe 16, and collector pipe 16 is accessed the water inlet 15 of well lid 10, and filter well 7 also can be used to collect
Rainwater, when collecting the upper limit more than filter well 7, unnecessary rainwater is conveyed downwards by drainpipe 3, the unnecessary rainwater being finally collected into
Fully enter unified storage in cistern 2.
(e) tile work：Osmos tube 17 is wrapped up with permeable geotextiles in advance, then by the osmos tube 17 after parcel and collector pipe 16
The mouth of pipe docking, reinforce, the mouth of pipe of osmos tube 17 is flushed with ground, be laid out according to osmos tube 17, mark seepage ditch area with gray line
Domain 18, seepage ditch width is more than the 50~80mm of diameter of osmos tube 17, then lays loaded filter between adjacent seepage ditch region 18,
Loaded filter is followed successively by the thick gravel layer 20 and 200~250mm of the thick metallings 19,100~150cm of 100~150mm from the bottom to top
Thick sandy soil layer 21, divides tile work region 22 and greenery patches region 23, and greenery patches region 23 is distributed in the both sides in tile work region 22, tile work
After region 22 uses water-permeable brick and pervious concrete making, laying to finish, smooth and water seasoning, the method for water seasoning are tamped
It is to cover full wafer tile work region 22, and water seasoning with stack of rice straw, curing time is 1~2 day, ensures that stack of rice straw is wet during maintenance
Profit, and forbid idler to trample thereon, water seasoning can ensure the intensity of water-permeable brick and pervious concrete, prevent crack, protect
Hold the water penetration of water-permeable brick.Water-permeable brick and pervious concrete have good gas permeability, water penetration, can make to be oozed under rainwater is rapid,
So as to alleviate the pressure of municipal drainage and flood fighting, after rainwater enters loaded filter, rainwater is migrated in loaded filter, and rainwater can only
Permeated downwards by hole, flow velocity is slow, and the residence time is long, and metalling 19, gravel layer 20 and sandy soil layer 21 have adsorption capacity, will
Organic granular absorption in rainwater, is degraded by the anaerobe grown in hole, and the rainwater after purification is stored in thin solum
In, the water content of thin solum can be increased, regulated the climate, contained urban heat land effect, while can also reduce the flood peak stream of runoff
Amount and flood are threatened, super to ooze part into greenery patches region 23, and rainwash is reduced to greatest extent.
F () afforests：Chisel removes the sandy soil on the surface of greenery patches region 23, forms both sides to the slope of seepage ditch region 18, controls the gradient
2%~3%, the sandy soil for going will be dug and be piled into mound, one laterally is set every 2~3m, the fluctuating using mima type microrelief extends rain
The water time of flowing and distance in greenery patches region 23, make rainwater farthest bleed back, and prevent from causing water and soil when rainfall is larger
It is lost in.Then laying turf, plantation shrub in greenery patches region 23, then lay 80~100mm thick in seepage ditch region 18
Centimetre rock layers, be compacted it is smooth, by osmos tube 17 beyond centimetre rock layers part severing, be allowed to centimetre rock layers top surface maintain an equal level,
Then the mouth of pipe of osmos tube 17 is covered with tree pond cover plate 24, slope landform causes the rainwater beyond water-permeable brick penetrating power to infiltration
Ditch venting, accelerates drainage efficiency, and rainwater is flowed into along the hole of tree pond cover plate 24, and the hollow out design for setting pond cover plate 24 is entered to rainwater
Row is once separated by filtration, then carries out second filtering by the permeable geotextiles of parcel osmos tube 17, by the rain after double-side filtering
Water enters in osmos tube 17, is conveyed rainwater downwards by osmos tube 17.
In the flow process of greenery patches region 23, the plant in greenery patches plays interception function to rainwater to rainwater, increases rainwater and exists
Holdup time in greenery patches region 23, root system of plant can play catharsis, rainwater to the suspension in rainfall runoff, impurity etc.
Infiltrate on the spot, directly penetrate into loaded filter, by loaded filter adsorption filtration, the rainwater after purification is stored in thin solum, not only increases
Add the water storage and conservation of soil, decreased the water for irrigation amount in greenery patches, on the other hand make full use of soil to cut rainwater
Dirty, filtration, oozes the quality of rainwater under raising, improve groundwater environment.In greenery patches region 23 one is excavated every 3~5m
Width is the gutter of 30~50mm, and gutter direction is consistent with slope direction, and guide functions are played in gutter so that rainwater is fast
To seepage ditch direction venting, mitigate greenery patches region 23 enters consolidation pressure to speed, and rainwater directly is entered into seepage ditch, from osmos tube 17 to
The unnecessary rainwater of lower conveying.
Present invention construction is simple, and difficulty is low, and construction is orderly, and construction quality is easily controllable, and the construction equipment being related to is few, construction
Low cost, osmotic effect is good, using water-permeable brick and pervious concrete making, makes to be oozed under rainwater is rapid, super to ooze part and enter greenery patches
Region 23, the plant in greenery patches plays interception function to rainwater, increases holdup time of the rainwater in greenery patches region 23, plant roots
System can play catharsis to the suspension in rainfall runoff, impurity etc., and rainwater is infiltrated on the spot, directly penetrates into loaded filter, rainwater
Into after loaded filter, rainwater is migrated in loaded filter, and rainwater can only downwards be permeated by hole, and flow velocity is slow, the residence time
Long, metalling 19, gravel layer 20 and sandy soil layer 21 have adsorption capacity, by the organic granular absorption in rainwater, by raw in hole
Anaerobe degraded long, the rainwater after purification is stored in thin solum, can increase water content, the regulation gas of thin solum
Wait, contain urban heat land effect, while the pollution and flood that can also reduce runoff are threatened, the rainwater for reaching seepage ditch is then suitable
The hole for tree pond cover plate 24 enters in osmos tube 17, then is conveyed rainwater downwards by osmos tube 17, is oozed through the feeding of collector pipe 16
In well 7, filter well 7, by rainwater storage in underground, prevents take up ground space, water filter well plate 9 as the container for collecting rainwater
To the effect of retardance rainwater, rainwater can only continuation be permeated downwards by permeable hole 11, and the fixed particle remained in rainwater is stopped
On the surface of water filter well plate 9, it is impossible to fall, separated impurity.When amount of rainfall exceedes filter well 7 collects the upper limit, unnecessary rainwater
Conveyed downwards by drainpipe 3, the unnecessary rainwater being finally collected into fully enters unified storage in cistern 2, by suction pump 6
The rainwater collected in cistern 2 is pumped into water tank 5 and is stored, the rainwater of storage can replace Tap Water from Some Cities and
Underground water, is applied to green area irrigation, road cleaning, supplement water landscape, toilet flushing etc., it is also possible to as park landscape water body
Make-up water source, substantially increase the resource utilization efficiency of rainwater, turn waste into wealth, by discontinuous, the unstable rainwater of space-time
Resource conversion is the systems stabilisation with lasting water supply capacity, as the water resource for being available for urban green space to comprehensively utilize, is alleviated
The problem of water resources shortage, all has very great meaning to building the ecological agriculture, ecocity, environmental protection.
Specific embodiment of the invention is these are only, but technical characteristic of the invention is not limited thereto.It is any with this hair
It is to solve essentially identical technical problem based on bright, realizes essentially identical technique effect, done simple change, etc.
With replacement or modification etc., all it is covered by among protection scope of the present invention.
Claims (7)
1. the construction method of a kind of sponge urban green space water storage system, it is characterised in that comprise the following steps：
A () sets up foundation ditch：According to design working drawing, excavation pit carries out the protection of foundation ditch crater wall to projected depth, and hole bottom is carried out
Cleaning, leveling are simultaneously suppressed to basic unit, and waterproofing geomembrane is set on basic unit upper berth, and it is thick that 5~8cm is backfilled on waterproofing geomembrane
Original soil protective layer, tamp it is smooth；
B () cistern is buried：Build cistern and embedded drainpipe by laying bricks or stones on original soil protective layer, cistern is built by laying bricks or stones after finishing and uses waterproof
In geomembrane is wrapped in, it is 4~5m often to arrange draining tube pitch, and the unification of each row's drainpipe water side is docked on many siphunculus,
Cistern is accessed into many siphunculus water sides, is backfilled with original soil and is buried cistern, backfill height is 550~600mm, often fills out 150
~200mm carries out hand compaction；
C () ground water storage is in place：Water tank and suction pump are separately fixed on the ground in the range of the 3m of foundation ditch periphery, suction pump
Water side connect water tank with PB pipes, and protection support carried out to PB pipes fix, the water inlet end of suction pump is connected with pvc pipe and stored
The water side in pond；
D () filter well is buried：Position laying filter well according to drainpipe, the space between adjacent filter well is backfilled with original soil,
Compacting is smooth, then lays collector pipe, and collector pipe one end is connected the well lid of filter well；
(e) tile work：Osmos tube is wrapped up with permeable geotextiles in advance, then by the osmos tube after parcel and the mouth of pipe pair of collector pipe
Connect, reinforce, the osmos tube mouth of pipe is flushed with ground, be laid out according to osmos tube, seepage ditch region, seepage ditch width are marked with gray line
More than infiltration 50~80mm of pipe diameter, loaded filter is then laid between adjacent seepage ditch region, loaded filter is from the bottom to top successively
It is 100~150mm thick metalling, 100~150cm thick gravel layer and the thick sandy soil layers of 200~250mm, divides tile work area
Domain and greenery patches region, greenery patches area distribution use water-permeable brick and pervious concrete making in the both sides in tile work region, tile work region,
After laying is finished, smooth and water seasoning is tamped；
F () afforests：Chisel removes the sandy soil of greenery patches region surface, forms both sides to seepage ditch region slope, controls the gradient 2%~3%,
Then turf, plantation shrub are laid in the region of greenery patches, the thick centimetre stones of 80~100mm is then laid in seepage ditch region
Layer, compacting is smooth, by osmos tube beyond the part severing of centimetre rock layers, is allowed to maintain an equal level with centimetre rock layers top surface, then with tree pond
Cover plate covers the osmos tube mouth of pipe.
2. the construction method of a kind of sponge urban green space water storage system according to claim 1, it is characterised in that：Step
The sandy soil for going will be dug in (f) and is piled into mound, laterally set one every 2~3m.
3. the construction method of a kind of sponge urban green space water storage system according to claim 1, it is characterised in that：Step
Every the gutter that 3~5m, one width of excavation is 30~50mm, gutter direction and slope direction in the region of greenery patches in (f)
Unanimously.
4. the construction method of a kind of sponge urban green space water storage system according to claim 1, it is characterised in that：Step
It is laying starting point with foundation ditch center in (a) when waterproofing geomembrane is laid, is laid to both sides, presses neat after evening up, every 2~3m
It is fixed with cement nail.
5. the construction method of a kind of sponge urban green space water storage system according to claim 1, it is characterised in that：Step
In (d) before filter well is laid, Jing Chi is first fixed, water filter well plate is loaded by Jing Chi according to the mode that fixed lobe is directed at mounting groove
It is interior, then to cement mortar is injected in mounting groove, while clearing up the slurries for overflowing mounting groove, then well lid is shelved on Jing Chi.
6. the construction method of a kind of sponge urban green space water storage system according to claim 1, it is characterised in that：Step
D filter well described in () includes Jing Chi, water filter well plate and well lid, on the Jing Chi, the water filter well plate sets the well lid
In permeable hole in the well pond, is evenly distributed with the water filter well plate, fixed lobe is symmetrically distributed with the water filter well plate,
Mounting groove is symmetrically distributed with the well pond, the mounting groove matches with the fixed lobe, and the side of the Jing Chi is provided with
Discharge outlet, the well lid is provided with water inlet.
7. the construction method of a kind of sponge urban green space water storage system according to claim 1, it is characterised in that：Step
E the method for water seasoning is to cover full wafer tile work region, and water seasoning with stack of rice straw in (), curing time is 1~2 day, is supported
Ensure stack of rice straw moistening during shield, and forbid idler to trample thereon.
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| CN111424802A (en) * | 2020-05-18 | 2020-07-17 | 丁凤景 | Automatic equipment of burying underground of infiltration well of sponge city greenery patches retaining system |
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