CN108222233B - Rain inlet structure for constructing sponge city and construction method thereof - Google Patents
Rain inlet structure for constructing sponge city and construction method thereof Download PDFInfo
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- CN108222233B CN108222233B CN201810235347.2A CN201810235347A CN108222233B CN 108222233 B CN108222233 B CN 108222233B CN 201810235347 A CN201810235347 A CN 201810235347A CN 108222233 B CN108222233 B CN 108222233B
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- 238000010276 construction Methods 0.000 title claims abstract description 20
- 238000003860 storage Methods 0.000 claims abstract description 69
- 230000001105 regulatory effect Effects 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 90
- 244000126211 Hericium coralloides Species 0.000 claims description 24
- 238000002955 isolation Methods 0.000 claims description 14
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 7
- 230000003111 delayed effect Effects 0.000 claims description 7
- 239000002861 polymer material Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 244000025254 Cannabis sativa Species 0.000 claims description 2
- 101100366940 Mus musculus Stom gene Proteins 0.000 claims 1
- 241000255925 Diptera Species 0.000 abstract description 4
- 238000009395 breeding Methods 0.000 abstract description 3
- 230000001488 breeding effect Effects 0.000 abstract description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract 1
- 235000017491 Bambusa tulda Nutrition 0.000 abstract 1
- 241001330002 Bambuseae Species 0.000 abstract 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract 1
- 239000011425 bamboo Substances 0.000 abstract 1
- 230000002950 deficient Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
-
- 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
- E03F5/0405—Gullies for use in roads or pavements with an odour seal
-
- 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
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F2005/0412—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps with means for adjusting their position with respect to the surrounding surface
- E03F2005/0413—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps with means for adjusting their position with respect to the surrounding surface for height adjustment
-
- 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
- E03F2005/0416—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps with an odour seal
- E03F2005/0417—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps with an odour seal in the form of a valve
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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
- E03F2005/061—Gully gratings hinged to the body of the gully
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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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- Health & Medical Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sewage (AREA)
Abstract
The utility model provides a rain inlet structure and construction method for constructing sponge city, rain inlet structure sets up the rainwater collection department at the sponge facility, including the rainwater well, retaining spacing regulating plate and rainwater grate, be equipped with high regulation pendant on the top inner wall of rainwater well, the shaft bottom of rainwater well is connected with municipal rainwater pipeline, it has the high adjustment tank of adjusting retaining spacing regulating plate and the relative height of rainwater well to open on the section of thick bamboo wall, high adjustment tank articulates on high regulation pendant, rainwater grate and rainwater well pass the rainwater grate and the spacing regulating plate of retaining and flow into in the rainwater pipeline behind the rainwater from the sponge facility, form the rainwater and collect the route. The invention can adjust the height of the accumulated rainwater in the sponge facility according to the requirement, can avoid the excessive storage time of the rainwater to cause mosquito breeding, can adjust the time of the rainwater to be gathered into a municipal rainwater pipeline, and has important significance for sponge city construction and urban waterlogging relief.
Description
Technical Field
The invention relates to the field of rainwater regulation and control, in particular to a rainwater inlet structure suitable for sponge city construction and a construction method thereof.
Background
China is a country with serious lack of water resources, and the water resource quantity of people per capita is only equivalent to 1/4 of the world water resource quantity of people per capita. Over 400 water-deficient cities exist in 668 cities in the whole country, wherein 110 water-deficient cities are more serious. At the same time, however, rainwater resources are severely wasted, rainwater is intensively discharged outside through the drainage pipe network, and great pressure is brought to municipal rainwater pipes, so that urban waterlogging occurs. Many cities face the contradiction that water needs to be flooded when raining and water resources are in shortage.
The sponge city is a new generation city rain and flood management concept, and the city has good elasticity in the aspects of adapting to environmental changes and responding to natural disasters caused by rainwater, and the city is also called as a water elasticity city. The international generic term is "low impact development stormwater system build". In order to solve the problems of urban waterlogging and water resource shortage, the country starts to advance sponge urban construction, changes the rainwater management mode mainly of external drainage, and keeps rainwater on the principle of seepage, stagnation, storage, purification, use and drainage, namely, the rainwater is firstly stored, purified, oozed and recycled in sponge facilities, more than 70% of the rainwater is consumed in situ, and the rainwater amount discharged into municipal rainwater pipelines is reduced. Therefore, under the new form of sponge city construction, the original rain inlet structure is difficult to meet the requirement of sponge city construction.
Disclosure of Invention
The invention aims to provide a rain water inlet structure for constructing a sponge city and a construction method thereof, which are used for solving the technical problems that rainwater is intensively discharged through a drainage pipe network, municipal rainwater pipe pressure is high, urban waterlogging cannot be avoided, urban water resource shortage and waste are extremely serious, and the construction requirements of the sponge city cannot be met.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a rain water inlet structure for constructing sponge city is arranged at the rainwater collecting position of sponge facilities with height difference and comprises a rain water well, a water storage limit adjusting plate and a rain water grate,
the sponge facility is a concave green land, a rainwater garden, a biological detention pond or a grass planting ditch,
the rainwater well is buried under the ground of the rainwater collecting place, the inner wall of the top of the rainwater well is provided with a height adjusting hanging piece, the bottom of the rainwater well is connected with a municipal rainwater pipeline,
the water storage limit adjusting plate is a cylinder without a top plate and a bottom plate, the cylinder wall is provided with a height adjusting groove for adjusting the relative height between the water storage limit adjusting plate and the rainwater well, the height adjusting groove is hung on a height adjusting hanging piece, the top of the water storage limit adjusting plate extends out of or enters the wellhead of the rainwater well,
the rainwater grate and the rainwater well are hinged and freely opened and closed through a first rotating shaft, the rainwater grate is covered above a wellhead of the rainwater well and a water storage limit adjusting plate, the first rotating shaft is fixedly connected with the upper surface of the wellhead,
rainwater passes through the rainwater grate and the water storage limit adjusting plate from the sponge facility, flows into the rainwater well, and then is converged into the municipal rainwater pipeline to form a rainwater converging path.
The inner wall of the lower part of the rainwater well is provided with a rotary odor isolation plate which can rotate 180 degrees when rainwater passes through and recover the horizontal posture when no rainwater passes through, the rotary odor isolation plate is fixedly connected on the inner wall of the rainwater well through a second rotating shaft,
the outer contour shape of the rotary odor isolation plate is a door-shaped plate which is matched with the cross section shape of the inner wall of the rainwater well, and the door-shaped plate is a single-opening door plate hinged with the rainwater well through a second rotating shaft or a double-opening door plate hinged with the rainwater well through two opposite rotating shafts.
The cross section shape of the water storage limit adjusting plate is matched with the cross section shape of a rainwater well, the water storage limit adjusting plate is a cylinder or a square cylinder, the top of the water storage limit adjusting plate is bound with a plate body operation rope,
the height adjusting grooves are at least symmetrically formed in two positions on the water storage limiting adjusting plate, the grooving shapes and the elevations of all the height adjusting grooves are identical, and the height adjusting pendants are arranged in one-to-one correspondence with the height adjusting grooves.
The height-adjusting grooves are comb-shaped, each height-adjusting groove comprises a comb back groove and a group of comb tooth grooves, each comb tooth groove is a height-adjusting gear, the comb back groove is vertically arranged from the bottom edge of the cylinder wall to the middle of the cylinder wall, each comb tooth groove is horizontally arranged from the comb back groove to the parallel interval in the same direction, each height-adjusting groove comprises 5-7 comb tooth grooves, the height-adjusting gear distance between the comb tooth grooves is 3-5cm, and the height-adjusting hanging piece is hung on the comb tooth groove from the comb back groove.
The gap between the water storage limit adjusting plate and the rainwater well, the gap between the water storage limit adjusting plate and the height adjusting hanging piece and the unused part in the comb tooth slot of the water storage limit adjusting plate are sealed by rubber sealing strips.
The outer contour shape of the rainwater grate is a hemisphere, a quadrangular frustum or a cuboid, water passing holes are formed in the side face and the top face, and the compressive load of the rainwater grate is greater than 15kN/m 2 An anti-theft lock is arranged on the rainwater grate.
The rainwater well is made of cast-in-place concrete, the height adjusting pendant is a bolt which is embedded on the inner wall of the rainwater well and is coated with a rust-proof layer, the bolt comprises a screw rod and a screw cap, one end of the screw rod is embedded on the inner wall of the rainwater well, the other end of the screw rod penetrates through a water storage limiting adjusting plate and is limited by the screw cap, and the water storage limiting adjusting plate is made of stainless steel.
The top end face of the water storage limit adjusting plate is additionally fixedly connected with a circle of reinforcing steel bars, and the surfaces of the reinforcing steel bars are coated with waterproof layers.
The rainwater well and the height adjusting hanging piece are integrally made of high polymer materials, the height adjusting hanging piece is a hook protruding out of the inner wall of the rainwater well and bending upwards, and the water storage limiting adjusting plate is also made of high polymer materials.
A construction method for constructing a rain inlet structure of a sponge city comprises the following construction steps:
firstly, constructing a cast-in-situ or prefabricated rainwater well at a rainwater collecting position of a sponge facility, and connecting the rainwater well with a municipal rainwater pipeline at the bottom of the well;
step two, mounting a rotary odor isolation plate on the inner wall of the rainwater well;
step three, hanging the water storage limit adjusting plate on a height adjusting hanging piece pre-embedded in advance or integrally prefabricated with the rainwater well, wherein each height adjusting groove of the water storage limit adjusting plate is hung on the same comb tooth groove, namely a height adjusting gear;
step four, installing a rainwater grate which is processed in a factory in advance on a wellhead of a rainwater well;
step five, rainwater in the roof, the road and the square hard paving lower cushion layer is converged and enters a sponge facility, and is accumulated and purified;
step six, when rainwater in the sponge facility is accumulated to the designed height, the rainwater flows into the rainwater well through the rainwater grate and the water storage limit adjusting plate and then is converged into the municipal rainwater pipeline, and is discharged through the municipal rainwater pipeline;
step seven, regulating the rainwater discharge speed:
when the rainwater in the sponge facility needs to be discharged as soon as possible, the water storage limit adjusting plate is adjusted to a low gear, and the rainwater is smoothly discharged;
when more rainwater is required to be accumulated or the time for discharging the rainwater into a municipal rainwater pipeline is delayed, the water storage limit adjusting plate is adjusted to a high gear, and the rainwater is delayed to be discharged in a staggered mode.
Compared with the prior art, the invention has the following characteristics and beneficial effects:
the invention provides a rain inlet structure for constructing a sponge city, which is arranged in sponge facilities such as a concave green land, a biological detention pond and the like, rainwater on a roof, a road, a square and the like can be in watertight pavement with a lower cushion layer during raining, and the rainwater is converged and enters the sponge facilities, so that the structure is suitable for regulating and controlling the rainwater in sponge city construction.
The rain inlet structure is simple in structure, the rain grate is in pin joint, the water storage limit adjusting plate is hung and installed and maintained through the plate body operation rope, and the rain inlet structure has the advantages of being very convenient, low in construction cost, environment-friendly and the like. The water storage limiting adjusting plate is provided with the height adjusting groove on the plate body, the height adjusting hanging piece fixed on the rainwater well is matched with the water storage limiting adjusting plate, the height adjusting hanging piece is characterized by being adjustable in height, rainwater in the sponge facility is required to be discharged as soon as possible, when mosquitoes are prevented from breeding, the ultrahigh adjusting plate is adjusted to a low gear, and the rainwater is smoothly discharged. When more rainwater is needed to be accumulated or the time for discharging the rainwater into a municipal rainwater pipeline is delayed, the ultra-high adjusting plate is heightened, and the rainwater is delayed to be discharged in a staggered mode.
The rotary odor isolation plate also has the function of preventing the foul odor at the bottom of the well from channeling upwards, is applied to a rainwater garden and a concave green land, and does not influence the environment of surrounding leisure and recreation. According to the invention, the height of the rainwater accumulated in the sponge facility is adjusted according to the requirement, so that the phenomenon that mosquitoes are bred due to overlong rainwater accumulation time can be avoided, the time of rainwater remitted into municipal pipelines can be adjusted, the pressure of the municipal rainwater pipelines is reduced, and the sponge facility has important significance in the construction of sponge cities and the alleviation of urban waterlogging.
Drawings
The invention is described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic view of a side cross-sectional structure of a gully according to a first embodiment of the present invention.
Fig. 2 is a schematic view of an expanded structure of the water storage limit adjusting plate.
Fig. 3 is an enlarged view of the connection structure of the water storage limit adjusting plate and the height adjusting hanger.
Fig. 4 is a schematic side view of a rain grate with a hemispherical outer contour.
Fig. 5 is a schematic top view of fig. 4.
Fig. 6 is a schematic top view of a rectangular rain grate with an outline shape.
Fig. 7 is a schematic top view of a rectangular-pyramid-shaped rain grate with an outer contour.
Fig. 8 is a schematic diagram of a side cross-sectional structure of a gully of a second embodiment of the present invention.
Reference numerals: 1-sponge facilities, 2-rainwater grate, 3-water storage limit adjusting plate, 4-rainwater well, 5-municipal rainwater pipeline, 6-height adjusting hanging piece, 61-screw, 62-screw cap, 7-height adjusting groove, 71-comb back groove, 72-comb tooth groove, 8-reinforcing steel bar, 9-rotation odor isolation plate, 10-second rotating shaft, 11-water flow direction, 12-first rotating shaft, 13-LID curb and 14-water through hole.
Detailed Description
Example 1-5, the sponge facility is a concave greenbelt with an area of 200m 2 The concave depth is 30cm, and the initial design elevation of the gully is 25cm. A rain water inlet structure for constructing sponge city sets up the rainwater collection department in concave greenbelt, including catch basin 4, retaining spacing regulating plate 3 and rainwater grate 2.
The rainwater well 4 is buried under the ground of the rainwater collecting place, the inner wall of the top of the rainwater well is provided with a height adjusting hanging piece 6, and the bottom of the rainwater well 4 is connected with a municipal rainwater pipeline 5.
The water storage limiting and adjusting plate 3 is a cylinder without a top plate and a bottom plate, and a height adjusting groove 7 for adjusting the relative height between the water storage limiting and adjusting plate 3 and the rainwater well is formed in the cylinder wall, and the height adjusting groove 7 is hung on the height adjusting hanging piece 6. The top of the water storage limit adjusting plate 3 extends out of or enters the wellhead of the catch basin 4. The cross section shape of the water storage limit adjusting plate 3 is matched with the cross section shape of the rainwater well 4, the water storage limit adjusting plate is a cylinder or a square cylinder, and a plate body operation rope is bound at the top of the water storage limit adjusting plate 3. In this embodiment, the height adjusting groove 7 is formed on the opposite side of the water storage limit adjusting plate 3, the grooving shape and the elevation of the two height adjusting grooves 7 are the same, and the height adjusting pendants 6 and the height adjusting grooves 7 are arranged in one-to-one correspondence and are also arranged in two. The height-adjusting grooves 7 are comb-shaped, each height-adjusting groove comprises a comb back groove 71 and a group of comb tooth grooves 72, the comb tooth grooves 72 are height-adjusting gears, the comb back grooves 71 are vertically arranged from the bottom edge of the cylinder wall to the middle of the cylinder wall, the comb tooth grooves 72 are horizontally arranged from the comb back grooves 71 to the parallel intervals in the same direction, each height-adjusting groove comprises 5-7 comb tooth grooves 72, the height-adjusting gear distance between the comb tooth grooves 72 is 3-5cm, and the height-adjusting hanging pieces 6 enter the comb tooth grooves 72 from the comb back grooves 71.
The rainwater grate 2 and the rainwater well 4 are hinged to be freely opened and closed through a first rotating shaft 12, the rainwater grate 2 is covered above a wellhead of the rainwater well 4 and a water storage limit adjusting plate 3, and the first rotating shaft 12 is fixedly connected to the upper surface of the wellhead. Referring to fig. 4-7, the outer contour shape of the rain grate 2 is a hemisphere, a quadrangular frustum or a cuboid, and the sides thereofThe face and the top face are provided with water holes 14. In this embodiment a hemisphere. An anti-theft lock is arranged on the rainwater grate 2. The rainwater grate 2 can be green or have other colors, and is color-coordinated with the sponge facility. The compressive load of the rainwater grate 2 is more than 15kN/m 2 The rain grate 2 needs to be capable of bearing the stepping pressure, but is not required to bear the load of a motor vehicle because the rain grate is applied to the sponge facility 1 and is arranged in a traffic lane unlike a traditional rain inlet.
The lower inner wall of the rainwater well 4 is provided with a rotary odor isolation plate 9 which can rotate 180 degrees when rainwater passes through and recover the horizontal posture when no rainwater passes through, and the rotary odor isolation plate 9 is fixedly connected to the inner wall of the rainwater well 4 through a second rotating shaft 10. The outer contour shape of the rotary odor isolation plate 9 is a door-shaped plate which is matched with the cross section shape of the inner wall of the rainwater well, and the door-shaped plate is a single-opening door plate hinged with the rainwater well through one second rotating shaft 10 or a double-opening door plate hinged with the rainwater well through two opposite second rotating shafts 10. The present embodiment is a double door panel.
The unused parts of the comb tooth grooves of the water storage limit adjusting plate 3 are sealed by rubber sealing strips, wherein the gaps between the water storage limit adjusting plate 3 and the rainwater well 4 and between the water storage limit adjusting plate 3 and the height adjusting hanging pieces 6 are all sealed by the rubber sealing strips.
In this embodiment, the catch basin 4 is made by cast in place concrete, high regulation pendant 6 is the bolt of the outer coating antirust layer of pre-buried on the catch basin 4 inner wall, the bolt includes screw rod 61 and nut 62, on the inner wall of catch basin 4 was buried in to the one end of screw rod 61, and the other end of screw rod 61 runs through retaining limiting adjustment board 3 and passes through the nut 62 spacing, retaining limiting adjustment board 3 is made by the stainless steel. The top end face of the water storage limit adjusting plate 3 is additionally fixedly connected with a circle of reinforcing steel bars 8, and the surfaces of the reinforcing steel bars are coated with waterproof layers.
Rainwater flows into a rainwater well 4 from a sponge facility 1 through a rainwater grate 2 and a water storage limit adjusting plate 3 and then is gathered into a municipal rainwater pipeline 5, so that a rainwater gathering path is formed.
The construction method for constructing the rain inlet structure of the sponge city comprises the following construction steps:
firstly, constructing a cast-in-situ or prefabricated rainwater well 4 at a rainwater collecting position of the sponge facility 1, and connecting the rainwater well with a municipal rainwater pipeline 5 at the bottom of a well.
And step two, installing a rotary odor isolation plate 9 on the inner wall of the rainwater well.
And thirdly, hanging the water storage limiting adjusting plate 3 on a height adjusting hanging piece 6 which is pre-embedded in advance or integrally prefabricated with the rainwater well 4, wherein each height adjusting groove 7 of the water storage limiting adjusting plate 3 is hung on the same comb tooth groove 72, namely a height adjusting gear.
And step four, installing a rainwater grate 2 which is processed in a factory in advance on the wellhead of the rainwater well 4.
And fifthly, converging rainwater in the lower cushion layer of the roof, the road and the square hard pavement into the sponge facility 1, and purifying by stagnation.
Step six, when rainwater in the sponge facility 1 is accumulated to the designed height, the rainwater passes through the rainwater grate 2 and the water storage limiting and adjusting plate 3, flows into the rainwater well 4, then is gathered into the municipal rainwater pipeline 5, and is discharged through the municipal rainwater pipeline 5.
Step seven, regulating the rainwater discharge speed:
according to the embodiment, after one rainfall is carried out in use, accumulated water in the concave greenbelt is 25cm deep, and under the condition that the rainwater is not completely drained after 36 hours, a new rainfall is predicted to come in 24 hours, and in order to avoid the mosquito breeding caused by accumulated water in the greenbelt for a long time, the rainwater in the concave greenbelt needs to be drained as soon as possible, so that the water storage limiting and adjusting plate 3 in the rainwater inlet structure in the embodiment is adjusted to be in a low gear, and the residual rainwater in the concave greenbelt can be drained as soon as possible.
In the second embodiment, as shown in fig. 2, 3 and 8, unlike the first embodiment, the sponge facility is a biological detention pond, the outer contour of the rain grate is rectangular, and the rain grate is positioned between the traffic lane and the sidewalk, and the rain in the traffic lane and the sidewalk flows into the biological detention pond through the LID curb 13, and the rain is stored, purified and infiltrated in the biological detention pond, and the rain inlet is arranged in the biological detention pond. The biosolid pool is 30cm below the road surface, and the wellhead of the gully is Chi Chaogao cm higher than the biosolid pool.
The rainwater well 4 and the height adjusting hanging piece 6 are integrally made of high polymer materials, the height adjusting hanging piece 6 is a hook protruding out of the inner wall of the rainwater well 4 and bending upwards, and the water storage limiting adjusting plate 3 is also made of high polymer materials. Therefore, when the embodiment is used, the rain is strong when meeting short time, the water storage limiting and adjusting plate 3 is adjusted to be in a high gear, more rainwater is accumulated in the biological detention pond, the time of discharging the rainwater into a municipal rainwater pipeline can be delayed, and the purpose of discharging the rainwater in a staggered peak mode is achieved.
Claims (7)
1. A inlet for stom water structure for constructing sponge city, its characterized in that: the rainwater collecting part arranged at the sponge facility (1) with the height difference comprises a rainwater well (4), a water storage limit adjusting plate (3) and a rainwater grate (2),
the sponge facility (1) is a concave green land, a rainwater garden, a biological detention pond or a grass planting ditch,
the rainwater well (4) is buried under the ground of the rainwater collecting place, the inner wall of the top of the rainwater well is provided with a height adjusting hanging piece (6), the bottom of the rainwater well (4) is connected with a municipal rainwater pipeline (5),
the water storage limit adjusting plate (3) is a cylinder without a top plate and a bottom plate, the cylinder wall is provided with a height adjusting groove (7) for adjusting the relative height between the water storage limit adjusting plate (3) and the rainwater well, the height adjusting groove (7) is hung on the height adjusting hanging piece (6), the top of the water storage limit adjusting plate (3) stretches out of or enters the wellhead of the rainwater well (4),
the rainwater grate (2) and the rainwater well (4) are hinged and freely opened and closed through a first rotating shaft (12), the rainwater grate (2) is covered above a wellhead of the rainwater well (4) and a water storage limit adjusting plate (3), the first rotating shaft (12) is fixedly connected to the upper surface of the wellhead,
rainwater flows into a rainwater well (4) from a sponge facility (1) through a rainwater grate (2) and a water storage limit adjusting plate (3) and then is converged into a municipal rainwater pipeline (5) to form a rainwater converging path,
the cross section shape of the water storage limit adjusting plate (3) is matched with the cross section shape of the rainwater well (4) and is a cylinder or a square cylinder,
the height adjusting grooves (7) are uniformly spaced at least two places on the water storage limit adjusting plate (3) along the circumferential direction, the grooving shape and the elevation of each height adjusting groove (7) are the same, the height adjusting pendants (6) are arranged in one-to-one correspondence with the height adjusting grooves (7),
the height adjusting grooves (7) are comb-shaped, each height adjusting groove comprises a comb back groove (71) and a group of comb tooth grooves (72), the comb tooth grooves (72) are height adjusting gears, the comb back grooves (71) are vertically arranged from the bottom edge of the cylinder wall to the middle of the cylinder wall, the comb tooth grooves (72) are horizontally arranged from the comb back grooves (71) to the parallel intervals in the same direction, each height adjusting groove comprises 5-7 comb tooth grooves (72), the height adjusting gear distance between the comb tooth grooves (72) is 3-5cm, the height adjusting hanging pieces (6) enter the comb tooth grooves (72) from the comb back grooves (71),
the outer contour shape of the rainwater grate (2) is a hemisphere, a quadrangular frustum or a cuboid, the side surface and the top surface are provided with water holes (14),
the rainwater well (4) is made of cast-in-place concrete, the height adjusting hanging piece (6) is a bolt which is embedded on the inner wall of the rainwater well (4) and is coated with a rust-proof layer, the bolt comprises a screw rod (61) and a screw cap (62), one end of the screw rod (61) is embedded in the inner wall of the rainwater well (4), the other end of the screw rod (61) penetrates through the water storage limiting adjusting plate (3) and is limited by the screw cap (62), and the water storage limiting adjusting plate (3) is made of stainless steel.
2. The gully structure for constructing sponge cities according to claim 1, wherein: the inner wall of the lower part of the rainwater well (4) is provided with a rotary odor isolation plate (9) which can rotate 180 degrees when rainwater passes through and recover the horizontal posture when no rainwater passes through, the rotary odor isolation plate (9) is fixedly connected on the inner wall of the rainwater well (4) through a second rotating shaft (10),
the outer contour shape of the rotary odor isolation plate (9) is a door plate which is matched with the cross section shape of the inner wall of the rainwater well, and the door plate is a single-opening door plate hinged with the rainwater well through a second rotating shaft (10) or a double-opening door plate hinged with the rainwater well through two opposite rotating shafts (10).
3. The gully structure for constructing sponge cities according to claim 1, wherein: the gap between the water storage limit adjusting plate (3) and the rainwater well (4), the gap between the water storage limit adjusting plate (3) and the height adjusting hanging piece (6) and the unused part in the comb tooth groove of the water storage limit adjusting plate (3) are sealed by rubber sealing strips.
4. The gully structure for constructing sponge cities according to claim 1, wherein: the compressive load of the rainwater grate (2) is more than 15.0kN/m 2 An anti-theft lock is arranged on the rainwater grate (2).
5. The gully structure for constructing sponge cities according to claim 1, wherein: the top end face of the water storage limit adjusting plate (3) is additionally and fixedly connected with a circle of reinforcing steel bars (8), and the surfaces of the reinforcing steel bars are coated with waterproof layers.
6. The gully structure for constructing sponge cities according to any one of claims 1 to 5, wherein: the rainwater well (4) and the height adjusting hanging piece (6) are integrally made of high polymer materials, the height adjusting hanging piece (6) is a hook protruding out of the inner wall of the rainwater well (4) and bending upwards, and the water storage limiting adjusting plate (3) is also made of high polymer materials.
7. A construction method for constructing a gully structure of a sponge city according to any one of claims 3 to 6, characterized by comprising the following construction steps:
firstly, constructing a cast-in-situ or prefabricated rainwater well (4) at a rainwater collecting position of a sponge facility (1), and connecting the rainwater well with a municipal rainwater pipeline (5) at the bottom of a well;
step two, mounting a rotary odor isolation plate (9) on the inner wall of the rainwater well;
thirdly, hanging the water storage limit adjusting plate (3) on a height adjusting hanging piece (6) pre-embedded in advance or integrally prefabricated with the rainwater well (4), wherein each height adjusting groove (7) of the water storage limit adjusting plate (3) is hung on the same comb tooth groove (72), namely a height adjusting gear;
step four, installing a rainwater grate (2) which is processed in a factory in advance on a wellhead of a rainwater well (4);
step five, rainwater in the lower cushion layer of the roof, the road and the square hard pavement is converged into the sponge facility (1), and is accumulated and purified;
step six, when rainwater in the sponge facility (1) is accumulated to a designed height, the rainwater flows into the rainwater well (4) through the rainwater grate (2) and the water storage limit adjusting plate (3) and then is converged into the municipal rainwater pipeline (5), and is discharged through the municipal rainwater pipeline (5);
step seven, regulating the rainwater discharge speed:
when the rainwater in the sponge facility needs to be discharged as soon as possible, the water storage limit adjusting plate (3) is adjusted to a low gear, and the rainwater is smoothly discharged;
when more rainwater is required to be accumulated or the time for discharging the rainwater into a municipal rainwater pipeline is delayed, the water storage limit adjusting plate (3) is adjusted to a high gear, and the rainwater is delayed to be discharged in a staggered mode.
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| CN112160398B (en) * | 2020-08-31 | 2021-06-22 | 江苏龙腾工程设计股份有限公司 | Multifunctional assembled gutter inlet and construction method thereof |
| CN117027141A (en) * | 2023-08-03 | 2023-11-10 | 广州珠江外资建筑设计院有限公司 | Adjustable sinking green land rainwater overflow port |
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| US9512606B2 (en) * | 2011-08-21 | 2016-12-06 | Oldcastle Precast, Inc. | Bioretention swale overflow filter |
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