CN112343151A - Rainwater garden overflow port and construction method thereof - Google Patents
Rainwater garden overflow port and construction method thereof Download PDFInfo
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- CN112343151A CN112343151A CN202011395271.3A CN202011395271A CN112343151A CN 112343151 A CN112343151 A CN 112343151A CN 202011395271 A CN202011395271 A CN 202011395271A CN 112343151 A CN112343151 A CN 112343151A
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- 238000010276 construction Methods 0.000 title description 9
- 239000002689 soil Substances 0.000 claims abstract description 64
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000011049 filling Methods 0.000 claims abstract description 35
- 239000004746 geotextile Substances 0.000 claims abstract description 22
- 238000004140 cleaning Methods 0.000 claims description 50
- 239000010813 municipal solid waste Substances 0.000 claims description 29
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 18
- 244000060011 Cocos nucifera Species 0.000 claims description 18
- 239000004576 sand Substances 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 abstract description 12
- 230000009286 beneficial effect Effects 0.000 description 17
- 239000004575 stone Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 13
- 239000002245 particle Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 230000033228 biological regulation Effects 0.000 description 8
- 230000002349 favourable effect Effects 0.000 description 7
- 239000011148 porous material Substances 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 238000009301 bioretention Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
- E03F3/046—Open sewage channels
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/0401—Gullies for use in roads or pavements
- E03F5/0404—Gullies for use in roads or pavements with a permanent or temporary filtering device; Filtering devices specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/06—Gully gratings
-
- 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
- E03F5/103—Naturals or landscape retention bodies, e.g. ponds
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sewage (AREA)
Abstract
The invention discloses a rainwater garden overflow port, which comprises a rainwater tank and a rainwater well arranged at the bottom of the rainwater tank; the rainwater tank sequentially comprises a gravel cushion layer, a replacement and filling soil layer, a planting soil layer and a water storage layer from bottom to top; permeable geotextiles are laid on the upper surface and the lower surface of the gravel cushion layer; a first perforated blind pipe is arranged at the bottom of the gravel cushion layer; the catch basin comprises a basin body and a catch grate; the rainwater grate is arranged at the upper end of the well body; two sides of the well body are connected with second perforated blind pipes; the outer wall of the second perforated blind pipe is provided with a permeable geotextile; the technical scheme adopted by the invention solves the problems that the existing overflow port of the rainwater garden is easy to cause serious water and soil loss, and the rainwater well has a simple structure to influence the filtering efficiency.
Description
Technical Field
The invention relates to the technical field of sponge urban facilities, in particular to a rainwater garden overflow port and a construction method thereof.
Background
In recent years, people begin to consume resources excessively, vegetation is cut down, soil, water and air are polluted seriously, urban flooding is frequent along with acceleration of urbanization process and aggravation of environmental changes such as climate and the like, urban water supply, water drainage and other processes are seriously influenced by hard construction of an underlying surface, and the two processes of urban precipitation, water consumption, water drainage, water supply and water drainage are seriously interfered. Therefore, sponge city construction aiming at comprehensive management and ecological regulation of rain flood takes place.
The sponge city is a city which can be like a sponge, has good elasticity in the aspects of adapting to environmental changes, coping with natural disasters and the like, absorbs water, stores water, seeps water and purifies water when raining, and releases and utilizes the stored water when needed. Sponge city construction should follow ecological priority principle etc. combines together natural way and artificial measures, under the prerequisite of guaranteeing urban drainage waterlogging prevention safety, furthest realizes that rainwater stores up, permeates and purifies in the urban area, promotes the utilization of rainwater resource and ecological environment protection. In the sponge city construction process, the systematicness of natural rainfall, surface water and underground water is planned, water recycling links such as water supply and drainage are coordinated, and the complexity and the long-term property of the links are considered.
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 the form of a sunken green land. The bioretention function refers to regulation, infiltration and purification by vegetation, planting matrix and microbes in the base. He can provide effectual purification treatment to the rainwater to rely on the space that recessed earth's surface and secret gravel layer hole provided, carry out the regulation to the rainwater. The surface runoff is firstly filtered by upper vegetation to remove rough sediments and then is filtered by a planting and filtering mechanism in the next step; the filtered water is delivered downstream at a small flow rate through a drainage layer; the over-standard rainwater will enter the municipal rainwater pipeline through the rainwater well.
The existing overflow port of the rainwater garden is easy to cause serious water and soil loss, and the rainwater well has a simple structure to influence the filtering effect.
Disclosure of Invention
The invention aims to provide a rainwater garden overflow port, which solves the problems that the existing rainwater garden overflow port is easy to cause serious water and soil loss, and a rainwater well has a simple structure to influence the filtration efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme: an overflow port of a rainwater garden comprises a rainwater tank and a rainwater well arranged at the bottom of the rainwater tank; the rainwater tank sequentially comprises a gravel cushion layer, a replacement and filling soil layer, a planting soil layer and a water storage layer from bottom to top; permeable geotextiles are laid on the upper surface and the lower surface of the gravel cushion layer; a first perforated blind pipe is arranged at the bottom of the gravel cushion layer; the catch basin comprises a basin body and a catch grate; the rainwater grate is arranged at the upper end of the well body; two sides of the well body are connected with second perforated blind pipes; the outer wall of the second perforated blind pipe is provided with a permeable geotextile;
further, the height of the broken stone cushion layer is 250-350 mm; the height of the soil replacement and filling layer is 280-320 mm; the height of the planting soil layer is 260-340 mm; the height of the water storage layer is 220mm and 280 mm; the water storage layer is provided with 180-220mm ultrahigh;
furthermore, the rainwater grate comprises a grating base and a trash blocking and cleaning device; the grating base is fixedly arranged at the upper end of the catch basin; the trash rack cleaning device is movably arranged in the rainwater well up and down; the upper end of the trash rack cleaning device is movably connected with the grid seat;
furthermore, the grid seat comprises a fixed ring, grid strips and a connecting cylinder; the fixed ring is fixedly connected with the upper end of the well body; one end of the grating strip is connected with the fixing ring; the other end of the grating strip is connected with the connecting cylinder;
furthermore, the trash rack cleaning device comprises an installation cylinder, a cleaning rib and a movable cover; the movable cover is hinged to the upper end of the mounting cylinder; the cleaning ribs are distributed at the lower end of the mounting cylinder corresponding to the grating strips; the outer wall of the mounting cylinder is in threaded connection with the connecting cylinder;
furthermore, the upper end of the cleaning rib is hinged with the lower end of the mounting cylinder; the lower ends of two adjacent cleaning ribs are connected through an elastic piece; the surface of the cleaning rib is provided with a convex rib;
furthermore, a net bag is movably arranged in the trash blocking and cleaning device up and down;
furthermore, a clamping hook is arranged at the upper end of the net bag; the lower end of the cleaning rib is provided with a limiting piece corresponding to the clamping hook;
the invention further provides a construction method of the overflow port of the rainwater garden, which comprises the following steps: (1) excavating a rainwater trench; (2) pouring a catch basin; (3) installing a second perforated blind pipe; (4) laying a lower layer of permeable geotextile; (5) paving a gravel cushion layer and a first perforated blind pipe; (6) laying upper layer permeable geotextile; (7) laying a replacement soil layer; (8) backfilling a planting soil layer; the replacement and filling soil layer is prepared by mixing coconut chaff, volcanic sand, river sand and planting soil in a ratio of 3:1:5:1 and then replacing and filling; the coconut coir is fully foamed coconut coir.
Compared with the prior art, the invention has the beneficial effects of at least one of the following:
1. the gravel cushion layer, the replacement filling layer, the planting soil layer and the water storage layer are sequentially arranged in the rainwater tank from bottom to top, the gravel cushion layer is beneficial to improving regulation and storage, the replacement filling is beneficial to buffering, the planting soil layer is beneficial to providing a planting matrix, the water storage layer is beneficial to preserving water, permeable geotextiles are laid on the upper surface and the lower surface of the gravel cushion layer, the upper layer is laid, the water and soil loss is reduced, and the blockage of pores in the gravel cushion layer is avoided; the lower layer is paved to be beneficial to avoiding the invasion of original soil;
2. the first perforated blind pipe 7 is arranged at the bottom of the gravel cushion layer, so that the storage capacity and the filtering capacity of the gravel cushion layer are improved;
3. the second perforation blind pipes are arranged on the two sides of the catch basin, and the permeable geotextiles are wrapped on the second perforation blind pipes, so that the drainage and filtration effects of the catch basin can be improved, and the blockage of a pipe network system can be reduced;
4. the rainwater grate is arranged at the upper end of the well body, so that sundries such as garbage and the like in rainwater can be blocked, and blockage can be avoided.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged view of a part of the structure of the present invention.
Fig. 3 is a top view of the rain water grate.
Fig. 4 is a schematic view of the installation of a part of the structure of the present invention.
In the drawings: 1. a rain gutter; 2. a catch basin; 3. a gravel cushion layer; 4. changing a filling layer; 5. planting a soil layer; 6. a aquifer; 7. a first perforated blind pipe; 8. a well body; 9. a rainwater grate; 10. a second perforated blind pipe; 11. a grid base; 111. a stationary ring; 112. grid bars; 113. a connecting cylinder; 12. a trash removal device; 121. mounting the cylinder; 122. clearing ribs; 123. a movable cover; 124. an elastic member; 125. a rib; 13. a net bag; 14. a hook is clamped; 15. and a limiting member.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1: as shown in fig. 1 to 4, a rainwater garden overflow port comprises a rainwater tank 1 and a rainwater well 2 arranged at the bottom of the rainwater tank 1; the rainwater tank 1 sequentially comprises a gravel cushion layer 3, a replacement and filling soil layer 4, a planting soil layer 5 and a water storage layer 6 from bottom to top; permeable geotextiles are laid on the upper surface and the lower surface of the gravel cushion layer 3; a first perforated blind pipe 7 is arranged at the bottom of the gravel cushion layer 3; the catch basin 2 comprises a basin body 8 and a catch basin grate; the rainwater grate 9 is arranged at the upper end of the well body 8; two sides of the well body 8 are connected with second perforated blind pipes 10; the outer wall of the second perforated blind pipe 10 is provided with a permeable geotextile; in this embodiment, the rain gutter 1 is provided with an appropriate slope to form a concave land; in this embodiment, the first perforated blind pipe 7 and the second perforated blind pipe 10 both adopt conventional PVC perforated blind pipes, and any reasonable material and size can be selected according to the needs; in the embodiment, the crushed stone particle size range of the crushed stone cushion layer 3 is properly selected, any reasonable crushed stone particle size range can be selected according to needs, the crushed stone particle size is not smaller than the pore diameter of the first perforated blind pipe 7, and the regulation, storage and filtration are facilitated; in this embodiment, the top elevation of the rain grate 9 should be lower than the road surface.
The height of the gravel cushion layer 3 is 250mm and 350 mm; the height of the soil replacement and filling layer is 280-320 mm; the planting soil layer 5 is 260-340mm high; the height of the water storage layer 6 is 220mm and 280 mm; the water storage layer 6 is provided with 180-220mm ultrahigh; in this embodiment, the gravel cushion 3, the replacement and filling soil layer 4, the planting soil layer 5, the water storage layer 6 and the ultrahigh height are set to be suitable, which is beneficial to improving the purifying effect of the rainwater garden.
The rainwater grate 9 comprises a grating base 11 and a trash holding and cleaning device 12; the grating base 11 is fixedly arranged at the upper end of the catch basin 2; the trash rack cleaning device 12 is movably arranged in the catch basin 2 up and down; the upper end of the trash rack cleaning device 12 is movably connected with the grid seat; in the embodiment, the grating base 11 and the catch basin 2 are connected in a conventional fixed connection mode, and any reasonable fixed connection mode can be selected according to needs, such as welding; in this embodiment, the trash rack cleaning device 12 is movably arranged in the grid base 11 up and down, so that the trash rack base 11 can be cleaned conveniently while debris such as garbage can be intercepted conveniently, and the filtering effect of the catch basin 2 can be improved conveniently.
The grating seat comprises a fixed ring 111, a grating strip 112 and a connecting cylinder 113; the fixed ring 111 is fixedly connected with the upper end of the well body 8; one end of the grid bar 112 is connected with the fixed ring 111; the other end of the grid bar 112 is connected with a connecting cylinder 113; in this embodiment, the fixing ring 111, the grating strips 112 and the connecting cylinder 113 are made of conventional materials with certain mechanical strength, and any reasonable material can be selected according to the requirement; in this embodiment, the fixing ring 111 and the well body 8, the grating strips 112 and the fixing ring 111, and the grating strips 112 and the connecting cylinder 113 are all connected in a conventional fixing connection manner, and any reasonable fixing connection manner, such as welding, can be selected as required; in the embodiment, the cross section of the grating base 11 is trapezoidal, which is beneficial to improving the filtering effect; the fixing ring 111 is beneficial to stably installing the grating base 11, and the connecting cylinder 113 is beneficial to being movably connected with the trash rack cleaning device 12; the grid bars 112 are beneficial to intercepting sundries such as garbage in rainwater.
The trash rack 12 comprises a mounting cylinder 121, a cleaning rib 122 and a movable cover 123; the movable cover 123 is hinged to the upper end of the mounting cylinder 121; the cleaning ribs 122 are distributed at the lower end of the mounting cylinder 121 corresponding to the grid bars 112; the outer wall of the mounting cylinder 121 is in threaded connection with the connecting cylinder 113; in this embodiment, the mounting tube 121, the cleaning ribs 122 and the movable cover 123 are made of conventional materials with certain mechanical strength, and any reasonable material can be selected according to the requirement; in this embodiment, the cleaning ribs 122 are distributed corresponding to the grid bars 112, and when the trash holding cleaning device 12 is taken out, the cleaning ribs 122 and the grid bars 112 act to facilitate cleaning of garbage and impurities retained between the grid bars 112; in this embodiment, the mounting cylinder 121 is connected with the connecting cylinder 113 by screw threads, and when the dirt blocking and cleaning device 12 is disassembled and assembled, the mounting cylinder 121 is screwed out and screwed in; the movable cover 123 is hinged to the upper end of the mounting cylinder 121, when the dirt blocking and cleaning device 12 is screwed in and out, the movable cover 123 is fixedly buckled on the mounting cylinder 121, and the movable cover 123 is rotated to screw in and out the mounting cylinder 121; when the lower part in the trash rack 12 is needed and the net bag 13 is taken out, the movable cover 123 is opened.
The upper end of the cleaning rib 122 is hinged with the lower end of the mounting cylinder 121; the lower ends of two adjacent cleaning ribs 122 are connected through an elastic piece 124; the surface of the cleaning rib 122 is provided with a convex rib 125; in this embodiment, the cleaning rib 122 and the mounting tube 121 are connected by a conventional hinged connector, and any one of reasonable hinged connectors can be selected as required, for example, a torsion spring is used, which is beneficial to folding and unfolding the cleaning rib 122 and lowering the cleaning rib 122; in this embodiment, the elastic member 124 is a conventional elastic member 124 available on the market, and any one of the elastic members 124 having reasonable structure and deformation force can be selected according to the requirement; the elastic piece 124 is connected with the lower end of the cleaning rib 122, so that the folding and unfolding stability of the cleaning rib 122 is improved; in this embodiment, the convex ribs 125 on the surface of the cleaning rib 122 are beneficial to acting on the grid bars 112 when the trash holding cleaning device 12 is taken out, and are beneficial to cleaning the grid bars 112 and reducing the occurrence of grid seat blockage.
A net bag 13 is movably arranged in the trash blocking and cleaning device 12 up and down; in this embodiment, string bag 13 is favorable to intercepting debris such as rubbish, and string bag 13 activity from top to bottom sets up, is favorable to placing as required and takes out, is favorable to clearing up the maintenance, is favorable to in time shifting rubbish and debris that are detained in string bag 13.
The upper end of the net bag 13 is provided with a clamping hook 14; the lower end of the cleaning rib 122 is provided with a limiting piece 15 corresponding to the hook 14; in this embodiment, the hook 14 and the limiting member 15 are both made of conventional materials with certain mechanical strength, and any reasonable material can be selected according to the requirement; in this embodiment, trip 14 and locating part 15 effect are favorable to avoiding string bag 13 to deviate from the trash holding cleaning device 12 lower part, and trip 14 is favorable to the hoist and mount to take out and put down string bag 13 simultaneously, is favorable to improving the convenience of installation.
Example 2: as shown in fig. 1, the overflow port of the rainwater garden comprises a rainwater tank 1 and a rainwater well 2 arranged at the bottom of the rainwater tank 1; the rainwater tank 1 sequentially comprises a gravel cushion layer 3, a replacement and filling soil layer 4, a planting soil layer 5 and a water storage layer 6 from bottom to top; permeable geotextiles are laid on the upper surface and the lower surface of the gravel cushion layer 3; a first perforated blind pipe 7 is arranged at the bottom of the gravel cushion layer 3; the catch basin 2 comprises a basin body 8 and a catch basin grate; the rainwater grate 9 is arranged at the upper end of the well body 8; two sides of the well body 8 are connected with second perforated blind pipes 10; the outer wall of the second perforated blind pipe 10 is provided with a permeable geotextile; in this embodiment, the rain gutter 1 is provided with an appropriate slope to form a concave land; in this embodiment, the first perforated blind pipe 7 and the second perforated blind pipe 10 both adopt conventional PVC perforated blind pipes, and any reasonable material and size can be selected according to the needs; in the embodiment, the crushed stone particle size range of the crushed stone cushion layer 3 is properly selected, any reasonable crushed stone particle size range can be selected according to needs, the crushed stone particle size is not smaller than the pore diameter of the first perforated blind pipe 7, and the regulation, storage and filtration are facilitated; in the embodiment, the replacement filling soil is prepared by mixing coconut chaff, volcanic sand, river sand and planting soil in a ratio of 3:1:5:1, the coconut chaff is fully foamed before use, and the replacement filling is performed after the coconut chaff is fully and uniformly stirred with other materials after the foaming is finished, wherein d50 of the replacement filling soil is not smaller than 0.45mm, and the phosphorus concentration is 10-30 ppm. In this embodiment, the top elevation of the rain grate 9 should be lower than the road surface.
The height of the gravel cushion layer 3 is 250 mm; the height of the soil replacement and filling layer 4 is 280 mm; the planting soil layer is 5mm high; the aquifer 6 is 220mm high; the water storage layer 6 is provided with a 180mm superelevation; in this embodiment, the gravel cushion 3, the replacement and filling soil layer 4, the planting soil layer 5, the water storage layer 6 and the ultrahigh height are set to be suitable, which is beneficial to improving the purifying effect of the rainwater garden.
Example 3: as shown in fig. 1, the overflow port of the rainwater garden comprises a rainwater tank 1 and a rainwater well 2 arranged at the bottom of the rainwater tank 1; the rainwater tank 1 sequentially comprises a gravel cushion layer 3, a replacement and filling soil layer 4, a planting soil layer 5 and a water storage layer 6 from bottom to top; permeable geotextiles are laid on the upper surface and the lower surface of the gravel cushion layer 3; a first perforated blind pipe 7 is arranged at the bottom of the gravel cushion layer 3; the catch basin 2 comprises a basin body 8 and a catch basin grate; the rainwater grate 9 is arranged at the upper end of the well body 8; two sides of the well body 8 are connected with second perforated blind pipes 10; the outer wall of the second perforated blind pipe 10 is provided with a permeable geotextile; in this embodiment, the rain gutter 1 is provided with an appropriate slope to form a concave land; in this embodiment, the first perforated blind pipe 7 and the second perforated blind pipe 10 both adopt conventional PVC perforated blind pipes, and any reasonable material and size can be selected according to the needs; in the embodiment, the crushed stone particle size range of the crushed stone cushion layer 3 is properly selected, any reasonable crushed stone particle size range can be selected according to needs, the crushed stone particle size is not smaller than the pore diameter of the first perforated blind pipe 7, and the regulation, storage and filtration are facilitated; in the embodiment, the replacement filling soil is prepared by mixing coconut chaff, volcanic sand, river sand and planting soil in a ratio of 3:1:5:1, the coconut chaff is fully foamed before use, and the replacement filling is performed after the coconut chaff is fully and uniformly stirred with other materials after the foaming is finished, wherein d50 of the replacement filling soil is not smaller than 0.45mm, and the phosphorus concentration is 10-30 ppm. In this embodiment, the top elevation of the rain grate 9 should be lower than the road surface.
The height of the gravel cushion layer 3 is 350 mm; the height of the soil replacement and filling layer 4 is 320 mm; the planting soil layer 5 is 340mm high; the aquifer 6 is 280mm high; the water storage layer 6 is provided with a 220mm superelevation; in this embodiment, the gravel cushion 3, the replacement and filling soil layer 4, the planting soil layer 5, the water storage layer 6 and the ultrahigh height are set to be suitable, which is beneficial to improving the purifying effect of the rainwater garden.
Example 4: example 1: as shown in fig. 1, the overflow port of the rainwater garden comprises a rainwater tank 1 and a rainwater well 2 arranged at the bottom of the rainwater tank 1; the rainwater tank 1 sequentially comprises a gravel cushion layer 3, a replacement and filling soil layer 4, a planting soil layer 5 and a water storage layer 6 from bottom to top; permeable geotextiles are laid on the upper surface and the lower surface of the gravel cushion layer 3; a first perforated blind pipe 7 is arranged at the bottom of the gravel cushion layer 3; the catch basin 2 comprises a basin body 8 and a catch basin grate; the rainwater grate 9 is arranged at the upper end of the well body 8; two sides of the well body 8 are connected with second perforated blind pipes 10; the outer wall of the second perforated blind pipe 10 is provided with a permeable geotextile; in this embodiment, the rain gutter 1 is provided with an appropriate slope to form a concave land; in this embodiment, the first perforated blind pipe 7 and the second perforated blind pipe 10 both adopt conventional PVC perforated blind pipes, and any reasonable material and size can be selected according to the needs; in the embodiment, the crushed stone particle size range of the crushed stone cushion layer 3 is properly selected, any reasonable crushed stone particle size range can be selected according to needs, the crushed stone particle size is not smaller than the pore diameter of the first perforated blind pipe 7, and the regulation, storage and filtration are facilitated; in the embodiment, the replacement filling soil is prepared by mixing coconut chaff, volcanic sand, river sand and planting soil in a ratio of 3:1:5:1, the coconut chaff is fully foamed before use, and the replacement filling is performed after the coconut chaff is fully and uniformly stirred with other materials after the foaming is finished, wherein d50 of the replacement filling soil is not smaller than 0.45mm, and the phosphorus concentration is 10-30 ppm. In this embodiment, the top elevation of the rain grate 9 should be lower than the road surface.
The height of the gravel cushion layer 3 is 300 mm; the height of the soil replacement and filling layer is 4 mm; the planting soil layer 5 is 300mm high; the aquifer 6 is 250mm high; the water storage layer 6 is provided with an ultrahigh height of 200 mm; in this embodiment, the gravel cushion 3, the replacement and filling soil layer 4, the planting soil layer 5, the water storage layer 6 and the ultrahigh height are set to be suitable, which is beneficial to improving the purifying effect of the rainwater garden.
Example 5: a construction method of an overflow port of a rainwater garden comprises the following steps: (1) excavating a rainwater trench; (2) pouring a catch basin; (3) installing a second perforated blind pipe; (4) laying a lower layer of permeable geotextile; (5) paving a gravel cushion layer and a first perforated blind pipe; (6) laying upper layer permeable geotextile; (7) laying a replacement soil layer; (8) backfilling a planting soil layer; the replacement and filling soil layer is prepared by mixing coconut chaff, volcanic sand, river sand and planting soil in a ratio of 3:1:5:1 and then replacing and filling; the coconut coir is fully foamed coconut coir.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (10)
1. An overflow port of a rainwater garden comprises a rainwater tank (1) and a rainwater well (2) arranged at the bottom of the rainwater tank (1); the method is characterized in that: the rainwater tank (1) sequentially comprises a gravel cushion layer (3), a replacement and filling soil layer (4), a planting soil layer (5) and a water storage layer (6) from bottom to top; the upper surface and the lower surface of the gravel cushion layer (3) are respectively paved with permeable geotextiles; a first perforated blind pipe (7) is arranged at the bottom of the gravel cushion layer (3); the catch basin (2) comprises a basin body (8) and a rainwater grate; the rainwater grate (9) is arranged at the upper end of the well body (8); two sides of the well body (8) are connected with second perforated blind pipes (10); and the outer wall of the second perforated blind pipe (10) is provided with a permeable geotextile.
2. A rainwater garden overflow according to claim 1, in which: the height of the gravel cushion layer (3) is 250-350 mm; the height of the soil replacement and filling layer (4) is 280-320 mm; the planting soil layer (5) is 260-340mm high; the height of the water storage layer (6) is 220-280 mm; the water storage layer (6) is provided with 180-220mm ultrahigh.
3. A rainwater garden overflow according to claim 1, in which: the rainwater grate (9) comprises a grating base (11) and a trash blocking and cleaning device (12); the grating base (11) is fixedly arranged at the upper end of the catch basin (2); the trash blocking and cleaning device (12) is movably arranged in the catch basin (2) up and down; the upper end of the trash blocking and cleaning device (12) is movably connected with the grid seat.
4. A rainwater garden overflow according to claim 3, in which: the grating seat comprises a fixed ring (111), grating strips (112) and a connecting cylinder (113); the fixed ring (111) is fixedly connected with the upper end of the well body (8); one end of the grid bar (112) is connected with the fixed ring (111); the other end of the grid bar (112) is connected with the connecting cylinder (113).
5. A storm water garden overflow as claimed in claim 4, in which: the trash rack cleaning device (12) comprises an installation cylinder (121), a cleaning rib (122) and a movable cover (123); the movable cover (123) is hinged to the upper end of the mounting cylinder (121); the cleaning ribs (122) are distributed at the lower end of the mounting cylinder (121) corresponding to the grid bars (112); the outer wall of the mounting cylinder (121) is in threaded connection with the connecting cylinder (113).
6. A rainwater garden overflow according to claim 5, in which: the upper end of the cleaning rib (122) is hinged with the lower end of the mounting cylinder (121); the lower ends of two adjacent cleaning ribs (122) are connected through an elastic piece (124); the surface of the cleaning rib (122) is provided with a convex rib (125).
7. A rainwater garden overflow according to claim 5, in which: a net bag (13) is movably arranged in the trash blocking and cleaning device (12) up and down.
8. A rainwater garden overflow according to claim 7, in which: a clamping hook (14) is arranged at the upper end of the net bag (13); the lower end of the cleaning rib (122) is provided with a limiting piece (15) corresponding to the clamping hook (14).
9. A method of constructing a storm drain as claimed in any one of claims 1 to 8 wherein: the method comprises the following steps: (1) excavating a rainwater trench; (2) pouring a catch basin; (3) installing a second perforated blind pipe; (4) laying a lower layer of permeable geotextile; (5) paving a gravel cushion layer and a first perforated blind pipe; (6) laying upper layer permeable geotextile; (7) laying a replacement soil layer; (8) and backfilling the planting soil layer.
10. A method of constructing a storm water garden overflow according to claim 9, characterised in that: the replacement and filling soil layer is prepared by mixing coconut chaff, volcanic sand, river sand and planting soil in a ratio of 3:1:5:1 and then replacing and filling; the coconut coir is fully foamed coconut coir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011395271.3A CN112343151A (en) | 2020-12-03 | 2020-12-03 | Rainwater garden overflow port and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011395271.3A CN112343151A (en) | 2020-12-03 | 2020-12-03 | Rainwater garden overflow port and construction method thereof |
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| Publication Number | Publication Date |
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| CN112343151A true CN112343151A (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011395271.3A Pending CN112343151A (en) | 2020-12-03 | 2020-12-03 | Rainwater garden overflow port and construction method thereof |
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| KR20160022632A (en) * | 2014-08-20 | 2016-03-02 | 주식회사 포스코건설 | Rain garden construction method having vegetative growth palpation and nonpoint pollutants reduction |
| CN207362970U (en) * | 2017-08-28 | 2018-05-15 | 中国建筑第二工程局有限公司 | A kind of concave herbaceous field structure |
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| CN214530988U (en) * | 2020-12-03 | 2021-10-29 | 中国电建集团昆明勘测设计研究院有限公司 | Overflow port of rainwater garden |
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2020
- 2020-12-03 CN CN202011395271.3A patent/CN112343151A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20160022632A (en) * | 2014-08-20 | 2016-03-02 | 주식회사 포스코건설 | Rain garden construction method having vegetative growth palpation and nonpoint pollutants reduction |
| CN207362970U (en) * | 2017-08-28 | 2018-05-15 | 中国建筑第二工程局有限公司 | A kind of concave herbaceous field structure |
| CN207905087U (en) * | 2018-01-12 | 2018-09-25 | 中国建筑第二工程局有限公司 | A kind of Rain Garden overflow well |
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