CN217628032U - Undercurrent type rainwater garden structure - Google Patents

Undercurrent type rainwater garden structure Download PDF

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Publication number
CN217628032U
CN217628032U CN202221704098.5U CN202221704098U CN217628032U CN 217628032 U CN217628032 U CN 217628032U CN 202221704098 U CN202221704098 U CN 202221704098U CN 217628032 U CN217628032 U CN 217628032U
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rainwater
bin
purification
layer
pipe
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CN202221704098.5U
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杨凌晨
陈金平
费景波
侯显成
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Shanghai Modern Building Decoration Environment Design Research Institute Co ltd
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Shanghai Modern Building Decoration Environment Design Research Institute Co ltd
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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
    • Y02A20/108—Rainwater harvesting

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Abstract

The utility model provides a subsurface flow type rainwater garden structure, which comprises a precipitation and purification part, wherein the precipitation and purification part comprises a front bin, a rear bin and a purification gabion, the front bin is internally provided with a replaceable purification gabion, and the front bin is communicated with a rainwater pipe outlet; the rainwater purification part is connected between the precipitation purification part and the drainage ditch and comprises a concrete pipe, and a plurality of holes are formed in the concrete pipe and are respectively communicated between the rear bin and the drainage ditch; the rainwater drainage part comprises a drain pipe, and the drain pipe is communicated between the rainwater purification part and the drainage ditch. The rainwater purification part surface layer can not form a large area of water surface for a long time and is in a semi-wet state, so that frequent harvesting and management of plants in the rainwater garden are facilitated, and the purification effect is guaranteed.

Description

Undercurrent type rainwater garden structure
Technical Field
The utility model relates to a sponge city construction field especially relates to a undercurrent type rainwater garden structure.
Background
The rainwater garden is a common ecological facility in a sponge city and is produced by combining an additional biological retention function and a landscape leisure and appreciation function on the basis of a sunken green land form. The regulation, infiltration and purification are realized through the vegetation on the surface layer of the rainwater garden, planting matrix and microorganisms in the base layer, the rainwater is effectively purified and treated, and the rainwater is regulated and stored by relying on the space provided by the concave ground surface and the pores of the underground gravel layer. The following disadvantages are present in the usual rain garden:
first, ground rainwater footpath flows through the upper vegetation and filters, gets rid of impurity such as leaf, branch, gravel granule that mix in the rainwater, oozes down through the successive layer afterwards and filters on next step, and the rainwater after the filtration directly infiltrates underground, and this type's rainwater garden accords with sponge city theory, nevertheless because of its simple structure, and it is poor to operate the filter purification function of a period after, and the later maintenance degree of difficulty is big moreover.
Second, municipal rainwater pipe outlet often will be lower than peripheral topography in actual engineering, and traditional rainwater garden requires that municipal rainwater pipe outlet is higher than the planting layer in rainwater garden, and more can form the pit, and the view effect is relatively poor.
Thirdly, in order to secure the purifying effect, the plants of the rainwater garden need to be frequently harvested to prevent the withering and rotting to cause the secondary pollution, whereas the conventional rainwater garden is easy to form sludge and is not easy to harvest and manage.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the invention provides the undercurrent type rainwater garden structure which can effectively improve the purification effect, is suitable for the requirements of different terrains, is beneficial to frequently reaping the vegetation of the rainwater garden and ensures the purification effect.
A submerged flow rainwater garden structure comprising:
the sedimentation and purification part comprises a front bin, a rear bin and a purification gabion, wherein the front bin is connected with the rear bin, the bottoms of the front bin and the rear bin are communicated, the replaceable purification gabion is arranged in the front bin, and the front bin is communicated with a rainwater pipe water outlet;
the rainwater purification part is connected between the precipitation purification part and the drainage ditch and comprises a concrete pipe, and a plurality of holes are formed in the concrete pipe and are respectively communicated between the rear bin and the drainage ditch;
the rainwater drainage part comprises a drain pipe, and the drain pipe is communicated between the rainwater purification part and the drainage ditch.
As a preferred embodiment, the rainwater purification part comprises a planting soil layer, a volcanic layer and a rammed clay layer which are arranged from top to bottom, and the concrete pipe is arranged inside the volcanic layer.
In a preferred embodiment, the drainage pipe is positioned below the concrete pipe, penetrates through the rammed earth layer and is communicated with the volcanic rock layer.
In a preferred embodiment, a filter screen is arranged between the drainage pipe and the volcanic rock layer.
As a preferred embodiment, a water blocking sill is arranged between the concrete pipe and the drainage ditch.
As a preferable embodiment, the rainwater purification part further comprises a water-permeable geotextile layer, and the water-permeable geotextile layer is arranged between the volcanic rock layer and the planting soil layer and between the volcanic rock layer and the rammed earth layer.
As a preferred embodiment, the rammed vegetarian soil layer comprises a horizontal part and two side slope parts, and two sides of the horizontal part are respectively connected with two sides of the planting soil layer through the side slope parts so as to wrap the volcanic rock layer.
As a preferred embodiment, the purification gabion comprises a net framework and volcanic rock filler arranged in the net framework.
As a preferred embodiment, the precipitation purification part comprises a concrete bin body, a cover plate and a partition, the concrete bin body and the cover plate are connected to form a bin, and the bin is partitioned by the partition to form the front bin and the rear bin.
As a preferred embodiment, the bottom of the partition is provided with an opening communicating the front bin and the rear bin, the purification gabion is arranged at the bottom of the front bin, and the rainwater pipe water outlet is positioned above the front bin.
Compared with the prior art, the technical scheme has the following advantages:
the rainwater purification part is used for planting plants, can purify and filter rainwater, is discharged into the drainage ditch through the drainage pipe, and further drains water through the concrete pipe, so that the surface layer of the rainwater purification part can not form a large-area water surface for a long time, is in a semi-wet state, is favorable for frequently harvesting and managing the plants in the rainwater garden, and ensures the purification effect. Through increasing the sediment that has the purification gabion and purifying the part, realize the purifying effect stronger to the rainwater. In addition, rainwater is filtered through an undercurrent area, and surface layer plant roots are mainly in the undercurrent area respectively, so that water quality can be purified, the elevation requirement on a municipal rainwater pipe water outlet is low, and the requirements of being more suitable for different terrains are met.
The present invention will be further described with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural view of the undercurrent type rainwater garden structure of the present invention.
In the figure: 100 precipitation purification parts, 101 concrete cabin bodies, 102 cover plates, 110 front cabins, 120 rear cabins, 130 purification gabions, 131 net frameworks, 132 volcanic rock filling materials, 140 partition walls, 141 openings, 200 rainwater purification parts, 210 pebble layers, 220 planting soil layers, 230 volcanic rock layers, 240 soil compaction layers, 241 horizontal parts, 242 slope parts on two sides, 250 concrete pipes, 260 water-permeable geotextile layers, 300 rainwater discharge parts, 310 drainage pipes, 320 filter screens, 400 rainwater discharge openings, 500 drainage ditches and 503 water retaining sills.
Detailed Description
The following description is provided to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments described below are by way of example only, and other obvious variations will occur to those skilled in the art. The underlying principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
As shown in fig. 1, the submerged rainwater garden structure includes:
a precipitation purification part 100, wherein the precipitation purification part 100 comprises a front bin 110, a rear bin 120 and a purification gabion 130, the front bin 110 is connected with the rear bin 120, the bottoms of the front bin 110 and the rear bin 120 are communicated, the replaceable purification gabion 130 is arranged in the front bin 110, and the front bin 110 is communicated with a rainwater pipe drainage outlet 400;
a rainwater purification part 200, wherein the rainwater purification part 200 is connected between the precipitation purification part 100 and a drainage ditch 500, the rainwater purification part 200 comprises a concrete pipe 250, a plurality of holes are formed on the concrete pipe 230, and the concrete pipe is respectively communicated between the rear bin 120 and the drainage ditch 500;
a rainwater drain part 300, the rainwater drain part 300 including a drain pipe 310, the drain pipe 310 communicating between the rainwater purification part 200 and a drain 500.
The rainwater purification part 200 is used for planting plants, can purify and filter rainwater, is discharged into the drainage ditch 500 through the drainage pipe 310, and further discharges the water through the concrete pipe 230, so that the surface layer of the rainwater purification part 200 is ensured not to form a large area of water surface for a long time and is in a semi-wet state, frequent harvesting and management of the plants in the rainwater garden are facilitated, and the purification effect is ensured. By adding the precipitation purification part 100 with the purification gabion 130, a strong purification effect on rainwater is achieved. In addition, rainwater is filtered through an undercurrent area, and plant roots on the surface layer are mainly in the undercurrent area respectively, so that water quality can be purified, the requirement on the elevation of the municipal rainwater pipe water outlet 400 is low, and the requirement on different terrains is met.
As shown in fig. 1, the rainwater purification part 200 includes a pebble layer 210, a planting soil layer 220, a volcanic layer 230, and a rammed earth layer 240 arranged from top to bottom, and the concrete pipe 250 is arranged inside the volcanic layer 230.
Specifically, the thickness of the planting soil layer 220 can be about 200mm, and water-resistant plants with deep roots such as cattail, reed, canna and the like can be planted. The volcanic rock layer 230 can be about 800mm thick and is formed by paving volcanic rocks with the particle size of about 60-80 mm. The concrete pipe 230 is horizontally laid inside the volcanic rock layer 230, the pipe diameter of the concrete pipe 230 can be about 300mm, a plurality of holes are formed in the portion, located inside the volcanic rock layer 230, of the concrete pipe 230, the holes are arranged along the length direction of the concrete pipe 230, the diameter of each hole is about 100mm, the distance between every two adjacent holes is about 500mm, and it needs to be noted that the particle size of volcanic rocks laid around the holes is larger than the diameter of each hole, so that the volcanic rocks are prevented from entering the concrete pipe 230. The tamping coefficient of the plain soil tamping layer 240 is more than or equal to 0.85.
Referring to fig. 1, the rammed earth layer 240 includes a horizontal portion 241 and two side slopes 242, two sides of the horizontal portion 241 are respectively connected to two sides of the planting soil layer 220 through the side slopes 242, so that the planting soil layer 220 and the rammed earth layer 240 wrap the volcanic rock layer 230.
Specifically, the planting soil 220 is substantially horizontal, the slope part 242 is inclined, and the slope gradient of the slope part 242 is greater than 1:2, so that the rainwater purification part 200 has an inverted isosceles trapezoid shape, referring to fig. 1. And the planting soil layer 220 and the rammed vegetarian soil layer 240 wrap around the volcanic rock layer 230.
With continued reference to fig. 1, the rainwater purification part 200 further includes a permeable geotextile layer 260, the permeable geotextile layer 260 is disposed between the volcanic rock layer 230 and the planting soil layer 220 and the compacted solid soil layer 240, and the permeable geotextile layer 260 not only plays a role of filtering, but also prevents the volcanic rock layer 230 from being mixed with the planting soil layer 220 and the compacted solid soil layer 240.
As shown in fig. 1, the precipitation purification section 100 and the drainage ditch 500 are connected to both sides of the rainwater purification section 200, wherein the precipitation purification section 100 is slightly higher than the surface of the rainwater purification section 200, and the precipitation purification section 100 is lower than the drainage ditch 500, so that a small gradient exists between the drainage ditch 500 and the rainwater purification section 200.
Specifically, the concrete pipe 230 passes through the two slope parts 242 to communicate the precipitation purification part 100 and the drainage ditch 500 at both sides, respectively, and a water blocking threshold 503 is provided between the concrete pipe 250 and the drainage ditch 500. The drainage pipe 310 is located below the concrete pipe 250, passes through the rammed earth layer 240 and communicates with the volcanic rock layer 230. The slope of the drainage pipe 310 is greater than 0.2%, and a filter screen 320 is arranged between the drainage pipe 310 and the volcanic rock layer 230, so that impurities such as volcanic rocks are prevented from entering the drainage pipe 310, and the phenomena of blockage and damage are avoided. In addition, the pipe diameter of the drain pipe 310 is not smaller than that of the municipal rainwater pipe.
As shown in fig. 1, the precipitation purification part 100 includes a concrete bin 101, a cover plate 102 and a partition 140, wherein the concrete bin 101 and the cover plate 102 are connected to form a bin, and the bin is separated by the partition 140 to form the front bin 110 and the rear bin 120.
The rear bin 120 is adjacent to the rainwater purification part 200, that is, the front bin 110 is located at a side of the rear bin 120, which is away from the rainwater purification part 200, so that the concrete pipe 230 penetrating out of the rainwater purification part 200 can be directly communicated with the rear bin 120. In addition, the sedimentation and purification section 100 is provided with a cover plate 102 for replacing the purification gabion 130 in the front compartment 110.
Referring to fig. 1, an opening 141 communicating the front bin 110 and the rear bin 120 is formed at the bottom of the partition 140, the purification gabion 130 is disposed at the bottom of the front bin 110, and the rainwater pipe outlet 400 is located above the front bin 110.
The rainwater pipe outlet 400 is a municipal rainwater pipe outlet, and is approximately flush with the surface layer of the rainwater purification part 200, so that the landscape effect is prevented from being influenced by the formation of a plurality of pits. Rainwater introduced from the rainwater pipe outlet 400 is filtered by the purification gabion 130, and the filtered rainwater enters the rear bin 120 through the opening 141.
The front bin 110 may have dimensions of: 1400mm in height, 1000mm in width and 1000mm in length. The rear bin 120 may have dimensions of: 1400mm in height, 600mm in width and 1000mm in length. The size of the opening 141 may be: 300mm wide and 300mm high.
The purification gabion 130 comprises a net framework 131 and volcanic rock filler 132 arranged in the net framework 131. The mesh framework 131 may be constructed by reinforcing steel bars, wherein the diameter of the reinforcing steel bars may be 10mm, the diameter of the holes of the mesh framework 131 is about 100mm, and the particle size of the volcanic rock filler 132 is larger than the diameter of the holes, for example, the particle size of the volcanic rock filler 132 is about 100-150 mm. Further, the purification gabion 130 is slightly smaller in size but larger in area than the storm drain 400.
The above-mentioned embodiments are only used for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to limit the scope of the present invention in terms of implementation, which is not limited by the present embodiment, i.e. all equivalent changes or modifications made in accordance with the spirit disclosed by the present invention still fall within the scope of the present invention.

Claims (10)

1. A submerged flow rainwater garden structure, comprising:
the sedimentation purification part (100), the sedimentation purification part (100) comprises a front bin (110), a rear bin (120) and a purification gabion (130), the front bin (110) is connected with the rear bin (120), the bottoms of the front bin (110) and the rear bin (120) are communicated, the replaceable purification gabion (130) is arranged in the front bin (110), and the front bin (110) is communicated with a rainwater pipe drainage outlet (400);
the rainwater purification part (200) is connected between the precipitation purification part (100) and the drainage ditch (500), the rainwater purification part (200) comprises a concrete pipe (250), and a plurality of holes are formed in the concrete pipe (250) and are respectively communicated between the rear bin (120) and the drainage ditch (500);
a rainwater discharge portion (300), the rainwater discharge portion (300) including a drain pipe (310), the drain pipe (310) communicating between the rainwater purification portion (200) and a drain ditch (500).
2. Subsurface flow type rainwater garden structure according to claim 1, characterized in that said rainwater purification section (200) comprises a planting soil layer (220), a volcanic layer (230) and a rammed earth layer (240) arranged from top to bottom, said concrete pipe (250) being arranged inside said volcanic layer (230).
3. A submerged rainwater garden structure according to claim 2, where the drainage pipe (310) is located below the concrete pipe (250) and passes through the rammed earth layer (240) and communicates with the volcanic rock layer (230).
4. Subsurface flow type stormwater garden structure as claimed in claim 3, characterized in that a screen (320) is provided between the drain pipe (310) and the volcanic rock layer (230).
5. Submerged rainwater garden structure according to claim 1, characterized by a water retaining sill (503) arranged between the concrete pipe (250) and the drainage ditch (500).
6. Subsurface flow type rainwater garden structure according to claim 2, characterized in that said rainwater purification section (200) further comprises a water permeable geotextile layer (260), said volcanic formation (230) being arranged with said planting soil layer (220) and said soil compacting layer (240), respectively, between said water permeable geotextile layer (260).
7. A subsurface flow type rainwater garden structure according to claim 2, wherein the soil compacting layer (240) comprises a horizontal portion (241) and two side slope portions (242), and both sides of the horizontal portion (241) are connected to both sides of the planting soil layer (220) through the side slope portions (242), respectively, to wrap the volcanic rock layer (230).
8. A submerged flow rainwater garden structure according to claim 1, characterised in that the purification gabion (130) comprises a mesh framework (131), and a volcanic filling (132) arranged inside the mesh framework (131).
9. Subsurface flow type stormwater garden structure as claimed in claim 1, characterized in that the precipitation purification section (100) comprises a concrete bin (101), a cover plate (102) and a partition (140), the concrete bin (101) and the cover plate (102) being connected to form a bin, and the bin being separated by the partition (140) to form the front bin (110) and the rear bin (120).
10. The undercurrent type rainwater garden structure according to claim 9, wherein the bottom of said partition (140) is opened with an opening (141) communicating said front bin (110) and said rear bin (120), said purification gabion (130) is arranged at the bottom of said front bin (110), and said rainwater pipe outlet (400) is positioned above said front bin (110).
CN202221704098.5U 2022-06-29 2022-06-29 Undercurrent type rainwater garden structure Active CN217628032U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221704098.5U CN217628032U (en) 2022-06-29 2022-06-29 Undercurrent type rainwater garden structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221704098.5U CN217628032U (en) 2022-06-29 2022-06-29 Undercurrent type rainwater garden structure

Publications (1)

Publication Number Publication Date
CN217628032U true CN217628032U (en) 2022-10-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202221704098.5U Active CN217628032U (en) 2022-06-29 2022-06-29 Undercurrent type rainwater garden structure

Country Status (1)

Country Link
CN (1) CN217628032U (en)

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