CN105089142A - Low elevation greenbelt rainwater regulation scheduling pool and distributed rainwater regulation scheduling pool system - Google Patents
Low elevation greenbelt rainwater regulation scheduling pool and distributed rainwater regulation scheduling pool system Download PDFInfo
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- CN105089142A CN105089142A CN201510533002.1A CN201510533002A CN105089142A CN 105089142 A CN105089142 A CN 105089142A CN 201510533002 A CN201510533002 A CN 201510533002A CN 105089142 A CN105089142 A CN 105089142A
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Abstract
The present invention discloses a low elevation greenbelt rainwater regulation scheduling pool and a distributed rainwater regulation scheduling pool system. The distributed rainwater regulation scheduling pool system comprises a low elevation greenbelt (1), a rainwater overflow well (2) and a rainwater regulation scheduling pool (7), and water storage, drainage and supply which are integrated with a rainwater pipe network or a sewage pipe network are achieved. Compared with the prior art, rainfall runoff and flood detention can be effectively adjusted, runoff pollution can be reduced, and purification, storage and utilization functions of rainwater are fulfilled; and the system is tightly combined with the rainwater and sewage pipe networks of a city, the problems of urban inland inundation caused by rainstorm, the runoff pollution caused by rain wash, and rainwater resource utilization are solved, water storage is scheduled according to drainage ability of drainage pipelines, an important means is provided for sponge urban construction, and the system has outstanding social, environmental and economic benefits.
Description
Technical field
The present invention relates to Rainwater Resources to utilize and water supply and drainage technical field, particularly relate to the method for designing in a kind of concave herbaceous field rainwater storage scheduling pond.
Background technology
Along with the remarkable quickening of Urbanization in China, the continuous expansion of city size, a large amount of culture makes the hardened ground in city increase, the increase of the underlying surface Permeable stratum area of hardened ground causes the increase of rainfall runoff coefficient, conflux networks is accelerated, thus the general stream of street flood and groundwater storage reduce when causing urban storm weather, thereby produce serious urban soil and water loss and problem of drainning off floodwaters.Meanwhile, rain drop erosion ground and the runoff pollution that produces, increase intractability also to the sewerage treatment in city, directly discharge into natural water if wash away the early-stage rainwater behind ground, can severe contamination water resource environment.
Rainwater is a kind of water resource of preciousness, and except early-stage rainwater, its contaminated degree is comparatively light, can be used as the greening in city after treatment, washes away road etc. and use mixedly water source.The rainwater utilization technology of the maturation that current city has has three kinds, be roof rain water collecting respectively, urban pavement rainwater utilization, urban green space, flower bed and gardens rainwater continue to utilize.
Concave herbaceous field is a kind of elevation lower than the public green space on around road surface, also claims Low elevation greenbelt.Its theory utilizes recessed open space to accept and storage rainwater, reaches the effect reducing runoff and arrange outward.In general, Low elevation greenbelt there are certain requirements the recessed degree of depth.And the many unmodified of its soil property, once large-area applications, be vulnerable to the impact of the conditions such as landform, cause actual volume of regulating and storing lower.
Storm detention tank refers to the collection storage utilization facility with rainwater storage function, also has the effect of cutting down peak flow simultaneously.In urban renewal, the application of storm detention tank gets more and more.But the storm detention tank of large volume builds floor space greatly, costly.City practice shows, for the target of comprehensive control rainwater mighty torrent, small size, distributed many storage ponds pattern than large volume, that centralized dullness stores pool mode is more effective.
Summary of the invention
Based on above-mentioned prior art Problems existing, the present invention proposes a kind of concave herbaceous field rainwater storage scheduling pond, design and concave herbaceous field, rainwater storage and rainwater are dispatched integrated system, more effectively realize regulating rainfall runoff and flood detention, cut down runoff pollution, realize rain water purification, store and utilize function; Simultaneously, the rain sewage network in this system and city is tight must be in conjunction with, solve the urban waterlogging caused due to heavy rain, rain drop erosion and the problem such as recycling of the runoff pollution produced and rainwater, according to drainage pipe drainability scheduling retaining, for sponge urban construction provides important means, there is outstanding society, environment, economic benefit.
Object of the present invention reaches by taking following technical scheme:
A kind of concave herbaceous field rainwater storage scheduling cell system, realize and Storm Sewer Network or the comprehensive retaining of sewage network, draining and water supply, this system comprises concave herbaceous field 1, stormwater overflow well 2 and rainwater storage scheduling pond 7; Wherein: concave herbaceous field 1 is arranged lower than ground; The well head of stormwater overflow well 2 is close to ground, and well body extends in the rainwater storage scheduling pond 7 being arranged at concave herbaceous field 1 bottommost; Described rainwater storage scheduling top, pond 7 is provided with water collection sheet 6, is sequentially filled with artificial back fill course 3, sandstone filtering layer 4, non-woven geotextile bed course 5, jointly for dmp filter between described water collection sheet 6 and described concave herbaceous field 1; ; Describedly regulate and store that scheduling side, pond 7 arranges drainage pipe 8, overflow pipe 9 and drainage pipe 8 are positioned at bottom; Overflow pipe 9 collaborates with drainage pipe 8 and is connected Storm Sewer Network, if around greenery patches be the pipeline of rainwater, sewage combined system, then each drainage pipe 8 and overflow pipe 9 are connected to sewage conduct; Below described stormwater overflow well 2, rainwater storage scheduling pond 7 in be provided with suction pump 11, carry out greening spray; When rainwater storage scheduling pond 7 stores full, unnecessary rainwater is discharged to the Storm Sewer Network in city.
The invention allows for a kind of distributing rainwater storage scheduling cell system, this system comprises multiple distributed concave herbaceous field rainwater storage scheduling pond, each concave herbaceous field rainwater storage scheduling cell system includes concave herbaceous field 1, stormwater overflow well 2 and rainwater storage scheduling pond 7, and each is regulated and stored, scheduling pond communicates with each other; Wherein: concave herbaceous field 1 is arranged lower than ground; The well head of stormwater overflow well 2 is close to ground, and well body extends in the rainwater storage scheduling pond 7 being arranged at concave herbaceous field 1 bottommost; Described rainwater storage scheduling top, pond 7 is provided with water collection sheet 6, is sequentially filled with artificial back fill course 3, sandstone filtering layer 4, non-woven geotextile bed course 5, jointly for dmp filter between described water collection sheet 6 and described concave herbaceous field 1; ; Describedly regulate and store that scheduling side, pond 7 arranges drainage pipe 8, overflow pipe 9 and drainage pipe 8 are positioned at bottom; Overflow pipe 9 collaborates with drainage pipe 8 and is connected Storm Sewer Network, if around greenery patches be the pipeline of rainwater, sewage combined system, then each drainage pipe 8 and overflow pipe 9 are connected to sewage conduct; Below described stormwater overflow well 2, rainwater storage scheduling pond 7 in be provided with suction pump 11, carry out greening spray; When rainwater storage scheduling pond 7 stores full, unnecessary rainwater is discharged to the Storm Sewer Network in city.
Compared with existing system, this invention more effectively can be alleviated urban waterlogging, be cut down urban runoff pollution load and saving water resource.First this system utilizes recessed greenery patches to eliminate rainwater runoff pollution, and the rainwater entering scheduling pond of regulating and storing can through water pump for greenery patches landscape ecology water; Simultaneously, consider in the short time possibility occurring secondary rainfall, be provided with outfall in scheduling pond of regulating and storing designed by the present invention to be communicated with drainage pipeline networks, when there is rich drainability in drainage pipeline networks, utilize the emptying storage pond of suction pump, realize water body scheduling feature to renew secondary storm runoff, the very big ability that must improve city opposing short-term repeatedly heavy rain; Finally, the present invention starts the new middle grid being connected to city, solves city when without rainfall, can not get the problem of effectively supplementing in scheduling pond of regulating and storing with water.
Compared with prior art, enforcement of the present invention has following technique effect:
1, the present invention integrates rainwater-collecting, purification, storage, scheduling, greening water function, more meets the sustainable development idea that rainfall runoff is collected, reduced runoff pollution, improves Water Resources;
2, rainwater storage of the present invention scheduling pond volume is little, expense is low, addressing and management easily, be suitable for sponge urban construction;
3, the blow-off line of the present invention's design ensures when repeatedly heavy rain, emptying when drainage pipe exists rich drainability, realizes avoiding the peak hour discharge, reduces urban waterlogging, and the ability of heavy rain is met in raising city again;
4, recessed Green Space Design improves rainwater-collecting ability, and rainfall runoff, after the purification of soil and sand filter blanket, substantially reduces the pollution of early-stage rainwater;
5, the present invention is connected to the Treated sewage reusing pipe network in city in a creative way, when solving city without rainfall, makes rainwater storage dispatch pond effectively supplemented, for greening irrigation by intermediate water pipeline;
6, Operation system setting of the present invention has suction pump, and distributed scheduling pond of regulating and storing is just as the emergent water source being positioned at each corner, city, if tie surface hydrant, then the road that the rainwater stored or middle water can be used in city washes away and the resource of water supply such as water for fire fighting.
Accompanying drawing explanation
Fig. 1 is the structural representation of the specific embodiment of the invention one;
Fig. 2 is the rainwater storage scheduling pool structure schematic diagram of the specific embodiment of the invention one;
Fig. 3 is the structural representation of instantiation example two of the present invention;
Fig. 4 is the rainwater storage scheduling pool structure schematic diagram of instantiation example two of the present invention;
Reference numeral: 1, concave herbaceous field, 2, stormwater overflow mouth, 3, artificial back fill course, 4, sandstone filtering layer, 5, non-woven geotextile bed course, 6, water collection sheet, 7, rainwater storage scheduling pond, 8, blow-off line, 9, overflow pipe, 10, middle water supply pipeline, 11, suction pump, 12, distribution pipe.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, if these embodiments exist exemplary content, should not be construed to limitation of the present invention.
Specific embodiment 1:
As shown in Figure 1 and Figure 2, the present invention is dispatched pond 7, suction pump 11, distribution pipe 12, middle water supply pipeline 10, overflow pipe 9 and blow-off line 8 formed by concave herbaceous field 1, stormwater overflow well 2, artificial back fill course 3, sandstone filtering layer 4, rainwater storage.Wherein, concave herbaceous field 1 design elevation is lower than peripheral path 200mm, greenbelt plants next time raising degree 25-30cm there is the artificial back fill course 3 of good permeance property, artificial back fill course lays the sandstone filtering layer 4 of height 20-30cm for 3 times, or adopt slag as this layer of filler to reduce costs, this layer of filler lower berth non-woven geotextile forms non-woven geotextile bed course 5, the rainwater storage scheduling pond 7 of band water collection sheet 6 is had below whole system, the dark 2.0-4.0m in rainwater storage scheduling pond 7, the buried depth considering municipal wastewater pipe carries out regulating and storing and dispatches the dark design in pond.Regulating and storing the area dispatching pond 7 should not be excessive, and the greening water supply volume that can store according to the catchment area of present position, greenery patches and design consider.Scheduling pond 7 side bottom of regulating and storing arranges drainage pipe 8, and side arranges middle water supply pipeline 10 and overflow pipe 9, and drainage pipe 8 is connected storm sewer with overflow pipe 9.If around greenery patches be the pipeline of rainwater, sewage combined system, then drainage pipe 8 and overflow pipe 9 are connected to storm sewer.Drainage pipe 8 mouthfuls has the gate control of electromagnetism circle, uses when there being repeatedly rainfall continuously, realizes retaining scheduling pond emptying.Rainwater storage scheduling is provided with suction pump 11 in pond 7, be connected with distribution pipe 12, or be connected to ground hydrant (such as: fire plug), the rainwater in pond is extracted out through suction pump 11, deliver to distribution pipe 12 and carry out greening sprinkling irrigation, or through ground hydrant for afforesting and the washing away of road.
Structure and the effect of each ingredient above-mentioned are described below:
(1) concave herbaceous field 1, for collecting, store and filtering rain water pollutant; Lower than surrounding ground and road surface, by the greenery patches of the stronger artificial back fill course 3 of permeability as planting soil, a kind ofly build the important low of sponge city and affect development stimulation, in greenery patches plantation possess rainwater absorb and the resistance to of interception function flood plant, meeting under greenery patches ecology, view and other basic prerequisites, improve the capacity gauge of rainwater.Its recessed degree of depth should determine according to the ability of inundation of plant and soil moisture monitoring.Research shows, concave herbaceous field for the purpose of Rainwater Resources, its recessed degree of depth should at 80-160mm, stagnantly to store by rain flood, the recessed degree of depth for the purpose of peak clipping should at 100-300mm, consider that concave herbaceous field of the present invention has scheduling pond 7 of regulating and storing, suitably the degree of depth can be arranged on about 200mm;
(2) stormwater overflow mouth 2, exceedes for discharging the rainwater that concave herbaceous field stores the ability of oozing, and improves the capacity of flood storage in greenery patches.Meanwhile, below stormwater overflow mouth, placed the suction pump 11 that green area irrigation needs, facilitate system management and the maintenance in later stage;
(3) artificial back fill course 3 and sandstone filtering layer 4 constitute the filtration system of rainwater, artificial back fill course 3 is mainly used in the plantation of greenbelt plants, the backfill that the present invention adopts should have good permeance property, can allow rainwater rapid osmotic, simultaneously, under the acting in conjunction of plant, soil, microorganism, can under the rainwater that oozes play good catharsis.And plant the sandstone filtering layer 4 established in soil layer lower berth, can be made up of sand gravel and rubble, also jointly play a part filtration with artificial back fill course, maintain the water and soil structure of the back fill course 3 on upper strata simultaneously;
(4) harmless geotextiles bed course 5 is arranged between sandstone filtering layer 4 and water collection sheet 6, plays the effect of partition.Non-woven geotextile a kind ofly has the effect of outstanding filtration, isolation, reinforcement protection by the water permeability geosynthetics of synthetic fibers by acupuncture or braiding, and its good penetrability, high temperature resistant, anti-freezing, ageing-resistant, corrosion-resistant.The present invention uses harmless geotextiles bed course 5 as the partition between rainwater storage scheduling pond 7 and concave herbaceous field 1, effectively prevent the blocking such as upper layer of soil, impurity water collection sheet, has also carried out further purification to the rainwater of infiltration simultaneously;
(5) rainwater storage scheduling pond 7 has rainwater to store the measure utilized with the Rainwater Resources of scheduling feature, rainwater storage scheduling pond 7 of the present invention is different from traditional storage pond, achieve rainwater storage, scheduling, greening water function be coupled, less on volume, construction cost is low, for the construction in sponge city provides important means.Regulate and store to dispatch above pond 7 and be provided with honeycomb water collection sheet 6, for collecting the rainwater of being come in by the infiltration of back fill course 3, sandstone filtering layer 4 and non-woven geotextile 5.Rainwater storage scheduling side, pond 7 is provided with three pipelines, is respectively blow-off line 8, overflow pipe 9 and middle water supply pipeline 10;
(6) effect of blow-off line 8 is when in the face of secondary rainfall in a short time, and effective scheduling pond 7 of must regulating and storing is emptying, to carry out the preparation storing secondary heavy rain, reduce city secondary heavy rain and strengthen the risk that flood endangers;
(9) overflow pipe 9 is the volume considering rainwater storage scheduling pond 7, when storing full, unnecessary rainwater is discharged to the storm sewer in city, contrast flows directly into the rainwater of urban rainwater pipeline, the Rainwater Quality that overflow pipe 9 is discharged is after the acting in conjunction through multilayer diafiltration and plant, microorganism, water quality has had obvious improvement, reduces the sewerage treatment difficulty of city rain Sewage Plant;
(6) in, water supply pipeline 10 is for connecting rainwater storage scheduling pond 7 and municipal middle water reuse pipe network, and Urban Rain situation in all parts of the country differs, and the North City as Tianjin, rainfall major part all comparatively concentrates on summer; Meanwhile, as water deficiency type city, its intermediate water reuse system must have more development.In order to avoid rainwater storage scheduling pond 7 stagnant sky when not having rainfall, available middle water connects the water level supplementing scheduling pond 7 of regulating and storing, and makes it also can effectively be supplemented when not having rainfall;
(7) suction pump 11, distribution pipe 12, renews for rainwater storage scheduling pond 7 and dispatches rainwater; That regulates and stores scheduling pond 7 renews rainwater or supplementary middle water through suction pump 11, distribution pipe 12, for washing away of afforestation of city and road.Suction pump 11 be used in short-term repeatedly heavy rain when to find time to regulate and store scheduling pond, for the preparation of meeting secondary heavy rain is carried out in rainwater storage scheduling pond 7.Meanwhile, suction pump also face hydrant joinably, for green area irrigation with wash away road surface.
Specific embodiment 2:
With reference to Fig. 3 and Fig. 4, the feature of this example considers the large-area land use for greening such as square, the distributed scheduling pond design of regulating and storing be communicated with each other is taked to have higher feasibility, while reducining the construction costs, can more omnibearing control rainwater mighty torrent.
Claims (10)
1. a concave herbaceous field rainwater storage scheduling pond, realize and Storm Sewer Network or the comprehensive retaining of sewage network, draining and water supply, it is characterized in that, comprise concave herbaceous field (1), stormwater overflow well (2) and rainwater storage scheduling pond (7); Wherein: concave herbaceous field (1) is arranged lower than ground; The well head of stormwater overflow well (2) is close to ground, and well body extends in rainwater storage scheduling pond (7) being arranged at concave herbaceous field (1) bottommost; Described rainwater storage scheduling pond (7) top is provided with water collection sheet (6), artificial back fill course (3), sandstone filtering layer (4), non-woven geotextile bed course (5) is sequentially filled with, jointly for dmp filter between described water collection sheet (6) and described concave herbaceous field (1); Describedly regulate and store that scheduling pond (7) side arranges drainage pipe (8), overflow pipe (9) and drainage pipe (8) are positioned at bottom; Overflow pipe (9) collaborates with drainage pipe (8) and is connected Storm Sewer Network, if around greenery patches be the pipeline of rainwater, sewage combined system, then each drainage pipe (8) and overflow pipe (9) are connected to sewage conduct; Be provided with suction pump (11) in described stormwater overflow well (2) below, rainwater storage scheduling pond (7), carry out greening sprinkling irrigation; When rainwater storage scheduling pond (7) stores full, unnecessary rainwater is discharged to the Storm Sewer Network in city.
2. concave herbaceous field rainwater storage scheduling pond as claimed in claim 1, it is characterized in that, also comprise middle water supply pipeline (10), be arranged at described rainwater storage scheduling pond (7) side, connect rainwater storage scheduling pond (7) and municipal middle water reuse pipe network, the stagnant sky when not having rainfall, available middle water connects the water level supplementing scheduling pond (7) of regulating and storing, and makes it also can effectively be supplemented when not having rainfall.
3. concave herbaceous field rainwater storage scheduling pond as claimed in claim 1, is characterized in that, also comprise distribution pipe (12), be arranged on concave herbaceous field (1).
4. concave herbaceous field rainwater storage scheduling pond as claimed in claim 3, it is characterized in that, described suction pump (11) is connected with described distribution pipe (12), rainwater in rainwater storage scheduling pond (7) is extracted out through suction pump (11), deliver to distribution pipe (12), through distribution pipe (12) for concave herbaceous field greening sprinkling irrigation.
5. concave herbaceous field rainwater storage scheduling cell system as claimed in claim 1, it is characterized in that, described suction pump (11) is connected to ground hydrant, through ground hydrant for afforesting washing away of sprinkling irrigation and road.
6. a distributing rainwater storage scheduling cell system, it is characterized in that, this system comprises multiple distributed concave herbaceous field rainwater storage scheduling cell system, each concave herbaceous field rainwater storage scheduling cell system includes concave herbaceous field (1), stormwater overflow well (2) and rainwater storage scheduling pond (7), and each is regulated and stored, scheduling pond communicates with each other; Wherein: concave herbaceous field (1) is arranged lower than ground; The well head of stormwater overflow well (2) is close to ground, and well body extends in rainwater storage scheduling pond (7) being arranged at concave herbaceous field (1) bottommost; Described rainwater storage scheduling pond (7) top is provided with water collection sheet (6), artificial back fill course (3), sandstone filtering layer (4), non-woven geotextile bed course (5) is sequentially filled with, jointly for dmp filter between described water collection sheet (6) and described concave herbaceous field (1); Describedly regulate and store that scheduling pond (7) side arranges drainage pipe (8), overflow pipe (9) and drainage pipe (8) are positioned at bottom; Overflow pipe (9) collaborates with drainage pipe (8) and is connected Storm Sewer Network, if around greenery patches be the pipeline of rainwater, sewage combined system, then each drainage pipe (8) and overflow pipe (9) are connected to sewage conduct; Be provided with suction pump (11) in described stormwater overflow well (2) below, rainwater storage scheduling pond (7), carry out greening sprinkling irrigation; When rainwater storage scheduling pond (7) stores full, unnecessary rainwater is discharged to the Storm Sewer Network in city.
7. distributing rainwater storage scheduling cell system as claimed in claim 6, it is characterized in that, this system also comprises middle water supply pipeline (10), be arranged at described rainwater storage scheduling pond (7) side, connect rainwater storage scheduling pond (7) and municipal middle water reuse pipe network, the stagnant sky when not having rainfall, available middle water connects the water level supplementing scheduling pond (7) of regulating and storing, and makes it also can effectively be supplemented when not having rainfall.
8. distributing rainwater storage scheduling cell system as claimed in claim 6, it is characterized in that, this system also comprises distribution pipe (12), is arranged on concave herbaceous field (1).
9. distributing rainwater storage scheduling cell system as claimed in claim 8, it is characterized in that, described suction pump (11) is connected with described distribution pipe (12), rainwater in rainwater storage scheduling pond (7) is extracted out through suction pump (11), deliver to distribution pipe (12), through distribution pipe (12) for concave herbaceous field greening sprinkling irrigation.
10. distributing rainwater storage scheduling cell system as claimed in claim 6, it is characterized in that, described suction pump (11) is connected to ground hydrant, through ground hydrant for afforesting washing away of sprinkling irrigation and road.
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