CN206157878U - Biological stagnant water pond system in sponge city - Google Patents

Biological stagnant water pond system in sponge city Download PDF

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Publication number
CN206157878U
CN206157878U CN201621011156.0U CN201621011156U CN206157878U CN 206157878 U CN206157878 U CN 206157878U CN 201621011156 U CN201621011156 U CN 201621011156U CN 206157878 U CN206157878 U CN 206157878U
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Prior art keywords
drainpipe
biological
overflow well
sponge city
backwater
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CN201621011156.0U
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郭靖
李宜杰
韩瑞明
陈志凯
李林
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Suzhou Gold Mantis Green Landscape Ltd Co
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Suzhou Gold Mantis Green Landscape Ltd Co
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Abstract

The utility model discloses a biological stagnant water pond system in sponge city, include: rainwater filtration system, including ecological stagnant water pond, the HDPE rete has been laid respectively to its basement and slope inboard, has laid drainage blanket, transition layer, filter layer and view layer on the HDPE rete of basement in proper order, the drainage blanket is equipped with a plurality of and lays first drain pipe and first downspout on the HDPE rete side by side, rainwater collection system, it includes overflow well and passes through the sump pit of second rain water piping connection to overflow well, the sump pit is equipped with the second drain pipe of outside drainage, overflow well's well head height is higher than the height of view layer in ecological stagnant water pond, first drain pipe is the perforated pipe, and the first drain pipe of first downspout one end intercommunication, the other end extend to among the overflow well. The utility model provides a biological stagnant water pond system has similar " sponge " body functions such as the rainwater of collection, infiltration, retaining, supply rainwater, can also beautify the environment.

Description

The biological backwater cell system in sponge city
Technical field
The utility model is related to biological stagnant pool technical field, and more specifically, the utility model is related to a kind of sponge city The biological backwater cell system in city.
Background technology
In prior art, the collection system of urban rainwater generally arranges soon pattern, the rainfall runoff in some cities using excavation and filling River is immediately discharged to without any process, rainwater pollution runoff directly enters river can form pollution impact load, cause flood season city Landscape River burst water quality deterioration, is also unfavorable for that rainwater-collecting is supplied to the dry spell.
Increasingly serious with modern environment, people pay attention to environmental protection all the more, and the concept in sponge city is suggested.Sea Continuous city, is new generation of city storm water man- agement concept, refers to that city is adapting to the natural calamity that environmental change and reply rainwater bring The aspects such as evil have good " elasticity ", also referred to as " water elasticity city ".The construction in " sponge city " is used as national strategy It is suggested, changes tradition urban development situation extensive in the past, but builds and there is nature accumulation, naturally osmotic, self-purification The sponge city of function.
Utility model content
For weak point present in above-mentioned technology, the utility model provides a kind of biological stagnant pool system in sponge city System, with collect rainwater, under ooze, retaining, similar " sponge " body function of supply rainwater etc., can also beautify the environment.
In order to realize that the utility model is by the following technical programs according to these purposes of the present utility model and further advantage Realize:
The utility model provides a kind of biological backwater cell system in sponge city, including:
Dmp filter system, it includes ecological stagnant pool, and the substrate of the ecological stagnant pool and slope inner side are laid respectively There is HDPE film layer, on the HDPE film layer of the substrate drainage blanket, transition zone, filter layer and landscape layer are equipped with successively; The drainage blanket is provided with the first drainpipe that several are laid on side by side on the HDPE film layer and several are set up in parallel First rain pipe;
Rain water collecting system, it includes overflow well and is connected to the sump of the overflow well by the second rain pipe; The sump is provided with the second drainpipe of outside draining;
Wherein, the overflow well is up-small and down-big trapezoidal cavity volume;The well head of the overflow well is highly equal to the landscape Height of the layer in the ecological stagnant pool;
First drainpipe is perforated pipe, and described first rain pipe one end connects first drainpipe, the other end and prolongs In reaching the overflow well.
Preferably, the substrate and slope inner side are provided with respectively the husky levelling of compacting between the HDPE film layer Layer;The compactness is more than 87%;Flatness satisfaction ± the 2cm/m of the husky screed-coat2
Preferably, the slope gradient of the ecological stagnant pool is 1:3.
Preferably, well week back-up coat is provided with around the overflow well, the well week back-up coat is the coagulation mixed with reinforcing bar Soil, the thickness of the concrete is not less than 20cm.
Preferably, the drainage blanket has the granule of parcel first drainpipe;
The transition zone is equipped with the medium coarse sand of compacting;
The filter layer is provided with the planting soil matched with the landscape layer planting plants;
Wherein, a diameter of 2.0-3.5mm of the granule;
The distance between first drainpipe and described HDPE film layer are 20-30cm;
The thickness of the medium coarse sand is 10cm, a diameter of 0.5-1.5mm.
Preferably, the aperture of first drainpipe is less than 2mm, the outside and the granule of first drainpipe it Between be provided with geotechnological layer of cloth.
Preferably, two first drainpipes side by side in laying near toe are respectively with the distance of toe 40cm;The two ends of each first drainpipe are respectively 1m with the distance of toe.
Preferably, the height distance between first rain pipe and the HDPE film layer is 20-30cm.
Preferably, first rain pipe is matched one by one with first drainpipe;Described first rain pipe one end connects Lead to first drainpipe, an other end to extend in the overflow well.
Preferably, one end of each first rain pipe connects several described first drainpipes, the other end and extends To in the overflow well.
The utility model at least includes following beneficial effect:
1) the biological backwater cell system that the utility model is provided, lays successively in the ecological stagnant pool of dmp filter system HDPE film layer, drainage blanket, transition zone, filter layer and landscape layer;First drainpipe of drainage blanket is connected by the first rain pipe To the overflow well of rain water collecting system, the rainwater of overflow well flow to sump storage, collection more than certain rain pipes of water level Jing second The retaining of well is discharged more than certain water level;So as to define collect rainwater, under ooze, retaining, supply rainwater, beautify the environment etc. one Bodyization is similar to " sponge " body function;
2) HDPE (High Density Polyethylene Impermeable membrane) film has anti-well Rotten performance, electrical property, humidity resistance, leakage performance, impact resistance, tensile strength is high, for the antiseepage of ecological stagnant pool;
3) overflow well is up-small and down-big trapezoidal cavity volume, and the well head of overflow well is highly equal to landscape layer in ecological stagnant pool Height;On the one hand, it is ensured that overflowing, common rainwater is filtered by ecological stagnant pool, purification enters overflow well;On the other hand, rainwater is worked as When being larger than the storage capacity of biological stagnant pool, overflow well can be entered quickly through the outspoken speed of overflow well;
4) substrate and slope inner side are provided with respectively the husky screed-coat of compacting between HDPE film layer, and compactness is more than 87%, Flatness satisfaction ± the 2cm/m of husky screed-coat2;The husky screed-coat of compacting lays the first stone for the smooth laying of HDPE film;
5) the slope gradient of ecological stagnant pool is 1:3, it is ensured that rainwater can with following current to ecological stagnant pool while, it is ensured that it is raw The construction safety of state stagnant pool;
6) drainage blanket has the granule of the first drainpipe of parcel, and granule surface is smooth so that the sand of husky screed-coat and first Drainpipe directly contact;
7) the distance between the first drainpipe and HDPE film layer are 20-30cm, it is ensured that at least can be with retaining 20-30cm;
8) the first drainpipe is perforated pipe, and the aperture of perforated pipe is less than 2mm, sets between the outside of the first drainpipe and granule There is geotechnological layer of cloth, prevent the first drainpipe to be blocked.
Further advantage of the present utility model, target and feature embody part by description below, and part will also pass through Research of the present utility model and practice are understood by the person skilled in the art.
Description of the drawings
Fig. 1 is the cross-sectional view of the biological backwater cell system in sponge city described in the utility model;
Fig. 2 for Fig. 1 top plan view in the first drainpipe and the first rain pipe relative position an example;
Fig. 3 for Fig. 1 top plan view in the first drainpipe and the first rain pipe relative position another example.
In figure:
100- dmp filter systems;
10- ecology stagnant pools;
11- substrates;12- slopes;13-HDPE film layers;
14- drainage blankets;
The drainpipes of 141- first;The rain pipes of 142- first;143- geotechnique's layer of cloths;
15- transition zones;16- filter layers;17- landscape layers;18- sand screed-coats;
20- overflow wells;
The rain pipes of 21- second;
200- rain water collecting systems;
30- sumps;The drainpipes of 31- second.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to explanation Book word can be implemented according to this.
It should be appreciated that it is used herein such as " have ", "comprising" and " including " term do not allot one or many The presence or addition of individual other elements or its combination.
As shown in Figure 1 to Figure 3, the utility model provides a kind of biological backwater cell system in sponge city, including:
Dmp filter system 100, it includes ecological stagnant pool 10, the substrate 11 of ecological stagnant pool 10 and the inner side point of slope 12 Be not equipped with HDPE film layer 13, be equipped with drainage blanket 14, transition zone 15, filter layer 16 on the HDPE film layer 13 of substrate 11 successively with And landscape layer 17;Drainage blanket 14 be provided with the first drainpipe 141 that several are laid on side by side on HDPE film layer 13 and several The first rain pipe 142 being set up in parallel;
Rain water collecting system 200, it includes overflow well 20 and is connected to the collection of overflow well 20 by the second rain pipe 21 Well 30;Sump 30 is provided with the second drainpipe 31 of outside draining;
Wherein, overflow well 20 is up-small and down-big trapezoidal cavity volume;The well head of overflow well 20 is highly being given birth to equal to landscape layer 17 Height in state stagnant pool 10;
First drainpipe 141 is perforated pipe, and the one end of the first rain pipe 142 connects the first drainpipe 141, other end and extends to In overflow well 20.
In above-mentioned embodiment, the rainwater in sponge city sequentially passes through landscape layer 17, filter layer 16, the filtration of transition zone 15 In entering into drainage blanket 14;When the rainwater in drainage blanket 14 highly be higher than the first drainpipe 141 when, rainwater by with the first drainpipe First rain pipe 142 of 141 connections is entered in overflow well 20, and the rainwater of overflow well 20 is further entered by the second rain pipe 21 Sump 30;When the reserve-water-level of sump 30 is more than the second drainpipe 31, then rainwater is discharged by sump 30.As can be seen here, The biological backwater cell system that present embodiment is provided, with collect rainwater, under ooze, retaining, similar " sponge " body of supply rainwater etc. Function, can also be beautified the environment by the planting plants of landscape layer 17.
In above-mentioned embodiment, the HDPE film of the laying of HDPE film layer 13 has good antiseptic property, electrical property, moisture resistance Energy, leakage performance, impact resistance, tensile strength is high, for the antiseepage of ecological stagnant pool 10.The laying of HDPE film is avoided the occurrence of Fold and ripple, will align, take neat HDPE film and push down in time during laying using sandbag, prevent wind from blowing.
In above-mentioned embodiment, overflow well 20 is up-small and down-big trapezoidal cavity volume, and the well head of overflow well 20 is highly equal to scape See height of the layer 17 in ecological stagnant pool 10;On the one hand, it is ensured that common rainwater is filtered, purifies entrance by ecological stagnant pool 10 Overflow well 20;On the other hand, when rainwater is larger than the storage capacity of biological stagnant pool 10, can be quickly through overflow well 20 Well head quickly enters overflow well 20.
In above-mentioned embodiment, substrate 11 and the inner side of slope 12 are provided with respectively the husky levelling of compacting between HDPE film layer 13 Layer 18.Compacting can be using baby roller (being not less than 2t), and compactness is more than 87%;The flatness satisfaction of husky screed-coat 18 ± 2cm/m2.Substrate 11 should be cleaned totally, must not there is debris and ponding, cleannes meet must not have in vertical depth 2.5cm tree root, The cusped edge debris such as rubble, stone.Slope should be tested using horizontal ruler, and domatic cleaning drying, no-sundries.Treat substrate 11 With the inside clean of slope 12, compacting and it is levelling after can spread HDPE film.
In above-mentioned embodiment, before biological stagnant pool 10 is excavated, should be pinpointed using total powerstation, it is fixed that four angles are carried out Point, irregularity is encrypted.Then line is spread with lime, stitching understands, very clear.Ensure that line style is graceful, smooth so that Biological stagnant pool 10 and periphery landform or road slitless connection, it is ensured that the inflow of rainwater.Biological stagnant pool 10 is entered using excavator Row earth excavation, excavation linearly wants smooth attractive in appearance, with periphery landform drop-over, it is ensured that rainwater can be with following current to ecological stagnant pool 10 In.The mode that excavator is excavated can adopt 90 degree of vertical cuts, but difficulty of construction is larger and easy landslide, there is potential safety hazard.For Convenient construction, potential safety hazard is reduced, present embodiment adopts 1:3 gradients carry out slope.
In above-mentioned embodiment, inside and outside the well of overflow well 20 1 is adopted:3 cement mortar are painted, should be without hollowing, surface It is smooth.The well Zhou Caiyong plate compactors of overflow well 20 are tamped, and prevent periphery from sinking.In order to ensure consolidation effect, preferably, Well week back-up coat (not shown) is provided with around overflow well 20, all back-up coats of well are the concrete mixed with reinforcing bar, concrete Thickness is not less than 20cm.As further preferred, mixed with 8 circle double steel bars in concrete, further add well cementation week, prevent down It is heavy.
In above-mentioned embodiment, drainage blanket 14 has the granule (non-family feud in figure) of the first drainpipe 141 of parcel;Drainage blanket 14 thickness is 20cm, a diameter of 2.0-3.5mm of granule;Granule surface is smooth so that the husky and first row of husky screed-coat 18 The directly contact of water pipe 141.
Transition zone 15 is equipped with the medium coarse sand of compacting;The thickness of transition zone 15 is 10cm, a diameter of 0.5- of medium coarse sand 1.5mm.Transition zone 15 is compacted as far as possible, to reach preferable filtration;Transition can be improved by the way of to medium coarse sand watering The packing of layer 15.
Filter layer 16 is provided with the planting soil matched with landscape layer planting plants, and the thickness of planting soil is 40cm, general to utilize The soil being excavated is improved, and to reduce to ecological destruction, and planting soil should meet the need that landscape layer 17 treats planting plants Ask.
The planting plants of landscape layer 17 should require with reference to landscape, select it is attractive in appearance, resistance to flood, the plant that dirt-removing power is strong.As It is preferred that, landscape layer 17 can select various plants doping plantation, form patch ecology, both attractive in appearance, and the ecological balance can be played again Preferable adjustment effect.
In above-mentioned embodiment, side by side in laying near toe two the first drainpipes 141 respectively with toe away from From for 40cm;The two ends of each the first drainpipe 141 are respectively 1m with the distance of toe.The aperture of the first drainpipe is less than 2mm, Easily it is blocked.In order to ensure that the first drainpipe 141 is not blocked, between the outside of the first drainpipe 141 and granule soil is provided with Work layer of cloth 143.The geotextiles of geotechnological layer of cloth 144 are wrapped in around the first drainpipe 141, to rising around the first drainpipe 141 Further filtration is arrived.
In above-mentioned embodiment, in order to ensure that rainwater smoothly flows into ecological stagnant pool 10, overflow well 20 and sump 30 Afterwards, realize rainwater collection, under ooze, similar " sponge " body function of integration such as retaining and the supply in later stage;In vertical direction On, the first drainpipe 141 being laid on side by side on HDPE film layer 13 is flushed with the first rain pipe 142, and the second rain pipe 21 is higher than First rain pipe 142 so that overflow well 20 has certain reservoir storage;Second drainpipe 31 is higher than the second rain pipe 21 so that collection Well 30 has certain water storage function;The height of the second drainpipe 31 is slightly below height of the landscape layer 17 relative to biological stagnant pool Degree so that under arid situation, the water storage in sump 30 can be discharged into the mistake of the lower section of landscape layer 17 by the second drainpipe 31 Filtering layer 16, is that landscape layer 17 supplies water.Preferably, the height distance between the first rain pipe 141 and HDPE film layer 13 is 20- 30cm, for ensureing that biological stagnant pool 10 can be with retaining 20-30cm.
Used as a kind of specific embodiment of the present utility model, the first drainpipe 141 is to be disposed in parallel in drainage blanket 14 Several, the first rain pipe 142 is matched one by one with the first drainpipe 141;One one end of the first rain pipe 142 connects one first The drainpipe 141, other end is extended in overflow well 20.Each first drainpipe 141 has corresponding one the first rain pipe 142 Matching connection, has ensured the drainage efficiency of each the first drainpipe 141.
Used as another kind of specific embodiment of the present utility model, the first drainpipe 141 is to be disposed in parallel in drainage blanket 14 Several, the first rain pipe 142 is several;One end of each the first rain pipe 142 connects several the first drainpipes 141st, the other end is extended in overflow well 20.One end of one the first rain pipe 142 connects several the first drainpipes 141, the One rain pipe 142 has several, ensured in the first drainpipe 141 and the first rain pipe 142 one or several appearance blocking, Failure cannot water flowing when, rainwater can flow to overflow well by other first drainpipes 141 and other first rain pipes 142 20。
Although embodiment of the present utility model is disclosed as above, it is not restricted in specification and embodiment Listed utilization.It can be applied to completely various suitable fields of the present utility model.For those skilled in the art It is easily achieved other modification.Therefore under the universal limited without departing substantially from claim and equivalency range, this reality Specific details is not limited to new and shown here as the legend with description.

Claims (10)

1. the biological backwater cell system in a kind of sponge city, it is characterised in that include:
Dmp filter system, it includes ecological stagnant pool, and the substrate of the ecological stagnant pool and slope inner side are equipped with respectively HDPE film layer, on the HDPE film layer of the substrate drainage blanket, transition zone, filter layer and landscape layer are equipped with successively;Institute State drainage blanket and be provided with the first drainpipe that several are laid on side by side on the HDPE film layer and several are set up in parallel One rain pipe;
Rain water collecting system, it includes overflow well and is connected to the sump of the overflow well by the second rain pipe;It is described Sump is provided with the second drainpipe of outside draining;
Wherein, the overflow well is up-small and down-big trapezoidal cavity volume;The well head of the overflow well highly exists equal to the landscape layer Height in the ecological stagnant pool;
First drainpipe is perforated pipe, and described first rain pipe one end connects first drainpipe, the other end and extends to In the overflow well.
2. the biological backwater cell system in sponge city as claimed in claim 1, it is characterised in that the substrate and the slope Inner side is provided with respectively the husky screed-coat of compacting between the HDPE film layer;
The compactness is more than 87%;Flatness satisfaction ± the 2cm/m of the husky screed-coat2
3. the biological backwater cell system in sponge city as claimed in claim 1, it is characterised in that the ecological stagnant pool is put The slope gradient is 1:3.
4. the biological backwater cell system in sponge city as claimed in claim 1, it is characterised in that be provided with around the overflow well The all back-up coats of well, the well week back-up coat is the concrete mixed with reinforcing bar, and the thickness of the concrete is not less than 20cm.
5. the biological backwater cell system in sponge city as claimed in claim 1, it is characterised in that
The drainage blanket has the granule of parcel first drainpipe;
The transition zone is equipped with the medium coarse sand of compacting;
The filter layer is provided with the planting soil matched with the landscape layer planting plants;
Wherein, a diameter of 2.0-3.5mm of the granule;
The distance between first drainpipe and described HDPE film layer are 20-30cm;
The thickness of the medium coarse sand is 10cm, a diameter of 0.5-1.5mm.
6. the biological backwater cell system in sponge city as claimed in claim 5, it is characterised in that the hole of first drainpipe Footpath is less than 2mm, and between the outside of first drainpipe and the granule geotechnological layer of cloth is provided with.
7. the biological backwater cell system in sponge city as claimed in claim 1, it is characterised in that side by side near slope in laying Two first drainpipes of pin are respectively 40cm with the distance of toe;The two ends of each first drainpipe respectively with slope The distance of pin is 1m.
8. the biological backwater cell system in sponge city as claimed in claim 1, it is characterised in that first rain pipe and institute It is 20-30cm to state the height distance between HDPE film layer.
9. the biological backwater cell system in the sponge city as any one of claim 1-8, it is characterised in that described first Rain pipe is matched one by one with first drainpipe;Described first rain pipe one end connects first drainpipe, another End is extended in the overflow well.
10. the biological backwater cell system in the sponge city as any one of claim 1-8, it is characterised in that each institute The one end for stating the first rain pipe connects several described first drainpipes, the other end and extends in the overflow well.
CN201621011156.0U 2016-08-31 2016-08-31 Biological stagnant water pond system in sponge city Active CN206157878U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106193263A (en) * 2016-08-31 2016-12-07 苏州金螳螂园林绿化景观有限公司 The biological stagnant pool system in sponge city
CN115029987A (en) * 2022-05-25 2022-09-09 中建八局第二建设有限公司 Permeable pavement drainage structure and sponge urban rainwater collection device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106193263A (en) * 2016-08-31 2016-12-07 苏州金螳螂园林绿化景观有限公司 The biological stagnant pool system in sponge city
CN115029987A (en) * 2022-05-25 2022-09-09 中建八局第二建设有限公司 Permeable pavement drainage structure and sponge urban rainwater collection device

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