CN211898784U - Sunken greenery patches drainage structures that sponge city was used - Google Patents
Sunken greenery patches drainage structures that sponge city was used Download PDFInfo
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- CN211898784U CN211898784U CN202020137796.6U CN202020137796U CN211898784U CN 211898784 U CN211898784 U CN 211898784U CN 202020137796 U CN202020137796 U CN 202020137796U CN 211898784 U CN211898784 U CN 211898784U
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Abstract
The utility model discloses a sunk greenbelt drainage structure for sponge cities, which comprises a plurality of overflow wells, wherein the overflow wells sequentially pass through a vegetable layer, a soil layer, a gravel layer and a gravel layer from top to bottom, and the bottoms of the overflow wells directly reach a lime soil compaction layer; the side wall of the overflow well is communicated with a perforated drain pipe which is laid between the lime soil compacted layer and the gravel layer; the parts of the overflow well, which are positioned on the vegetation layer, the soil layer, the sand stone layer and the gravel layer, are poured by using water-permeable concrete, and the parts, which are positioned on the lime soil compaction layer, are poured by using water-impermeable concrete; and adjacent overflow wells are communicated by a rainwater drainage pipe. The drainage structure of the utility model is used for pouring the water permeating part of the overflow well and the water impermeable concrete part of the overflow well, which is beneficial to the rapid infiltration, collection and storage of the runoff rainwater; the prefabricated baffle in perforation drain pipe both ends has increased the regulation volume of perforation drain pipe, and the collection when the discharge rainwater holds partly infiltration rainwater and supplies vegetation, promotes the effective utilization of rainwater.
Description
Technical Field
The utility model belongs to the technical field of sponge city drainage facility, concretely relates to formula of sinking greenery patches drainage structures that sponge city was used.
Background
In recent years, with the rapid development of urbanization construction in China, urban grey buildings are continuously increased, the proportion of impermeable areas is increased, the hydrologic cycle process of cities is damaged, and the traditional urban rainwater drainage system cannot meet the requirements of novel urbanization development, so that disasters such as urban waterlogging and the like are frequent.
The proposal of the concept of sponge city provides a new idea for city development and comprehensive coping with the problem of city water, and realizes the benign hydrologic cycle of city and maintains or recovers the function of sponge of city by various technologies such as seepage, stagnation, storage, purification, use, discharge and the like.
However, the existing seepage-proofing concave greenbelt rainwater control method has the following main problems: the requirement of soil moisture conservation on the growth moisture of the green land plants is not fully considered, the seepage and drainage effects are obvious, and the effects of stagnation, storage and water consumption are not good; the structure form of the drainage pipe of the concave green space structure layer is not beneficial to storing and utilizing rainwater; the arrangement form of the drain pipe is single, and the water collecting function is not sufficient; the material of the drain pipe needs to be improved so as to improve the reliability and the service life of the drain pipe.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a formula of sinking greenery patches drainage structures that sponge city was used can effectively exert city greenery patches convection current rainwater and ooze, stagnate, hold, clean, with, the regulation and control effect of arranging, promotes the function that recessed greenery patches rainwater source was cut down and rainwater utilized, does the emergence of prevention and cure urban waterlogging.
The utility model adopts the technical scheme that the sunk greenbelt drainage structure for the sponge city comprises a plurality of overflow wells, wherein the overflow wells sequentially pass through a vegetable layer, a soil layer, a sand stone layer and a gravel layer from top to bottom, and the bottom of the overflow wells directly reach a lime soil compaction layer; the side wall of the overflow well is communicated with a perforated drain pipe which is laid between the lime soil compacted layer and the gravel layer; the parts of the overflow well, which are positioned on the vegetation layer, the soil layer, the sand stone layer and the gravel layer, are cast by using water-permeable concrete, and the parts, which are positioned on the lime soil compaction layer, are cast by using water-impermeable concrete; and adjacent overflow wells are communicated by a rainwater drainage pipe.
The utility model discloses a characteristics still lie in:
the pipe diameter of the rainwater drainage pipe is larger than the pipe diameter of the perforated drainage pipe paved around the overflow well, the pipe diameter of the perforated drainage pipe is 200mm, and the pipe diameter of the rainwater drainage pipe is 300 mm.
The perforated drainpipes are uniformly laid according to a gradient coefficient of 1%.
The top of the overflow well is 15cm higher than the vegetation layer, a groove is reserved when the top of the overflow well is poured, and the groove is used for placing a stainless steel drainage grate.
A plurality of water permeable holes are uniformly arranged on the perforated drain pipe, and an impermeable filter screen layer is also coated outside the perforated drain pipe.
The perforated drain pipe is arranged along the axial direction +/-45 degrees of the rainwater drain pipe.
The thickness of the soil layer is 450mm, the thickness of the sand layer is 100mm, and the thickness of the gravel layer is 250 mm.
And an impermeable film is laid on the lime soil compaction layer and is positioned below the perforated drain pipe.
The perforated drain pipes are all prefabricated concrete perforated pipes in factories.
The perforated drain pipes are all prefabricated concrete perforated drain pipes in factories; the first half of perforation drain pipe is precast concrete perforated structure, and the latter half is precast concrete non-perforated structure, and aim at is detained and the collection holds the infiltration rainwater.
Two end prefabricated semicircular baffles of perforation drain pipe, its aim at collect the infiltration rainwater, can satisfy the water demand of earth's surface vegetation on the one hand, can alleviate drainage and regulation pressure on the other hand.
The beneficial effects of the utility model are that, the utility model discloses a formula of sinking greenery patches drainage structures that sponge city was used possesses following beneficial effect:
(1) through pouring of the permeable concrete and the non-permeable concrete that set up to the overflow well body, be favorable to infiltrating, the collection of runoff rainwater to can effectively prevent impurity such as rubble to get into the overflow well body, avoid the rainwater to collect at planting the soil layer, thereby further improve the infiltration ability of formula of sinking greenery patches, with the reduction surface runoff.
(2) The anti-seepage film arranged outside the perforated drainage pipe plays a certain role in filtering and purifying the infiltrated rainwater so as to collect and retain the water, improve the comprehensive utilization efficiency of the water and promote the cyclic utilization of the rainwater.
(3) The utility model discloses the slope coefficient that sets up 1% is convenient for rainwater and is collected and utilize in flowing to the overflow well, and the prefabricated perforation drain pipe that chooses for use has good economic benefits and use value.
(4) Compare with current perforation drain pipe in the market, the utility model provides a perforation drain pipe first half is precast concrete perforated structure, and perforation drain pipe lower half is precast concrete non-perforated structure, and its aim at infiltrates the delay and the collection of rainwater and holds.
(5) Two ends of the perforated drain pipe are prefabricated with semicircular baffles, so that infiltration rainwater can be collected, the water requirement of surface plant growth is met, and downstream drainage and pressure regulation and storage are relieved.
Drawings
FIG. 1 is a schematic structural view of a sinking green space drainage structure of a sponge measure of the present invention;
FIG. 2 is a diagram showing the distribution structure of the sinking type green land drainage structure overflow well, the perforated drainage pipe and the rainwater drainage pipe of the sponge measure of the present invention;
fig. 3 is the utility model discloses a terminal structure sketch map of formula greenery patches drainage structures perforation drain pipe sinks based on sponge urban technology.
In the figure, 101 is the vegetation layer. 102. The soil layer 103, the gravel layer 104, the gravel layer 105, the perforated drain pipe 106, the impermeable membrane 107, the soil compaction layer 108, the overflow well 109, the impermeable filter screen 110, the rainwater drain pipe 111 and the semicircular baffle plate.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses a formula of sinking greenery patches drainage structures for sponge city is shown in fig. 1, including a plurality of overflow well 108 that suitably distribute, overflow well 108 passes vegetation layer 101, soil horizon 102, grit layer 103 and grit layer 104 from top to bottom in proper order, the direct lime-soil compaction layer 107 in overflow well 108 bottom; the side wall of the overflow well 108 is also communicated with a perforated drain pipe 105, and the perforated drain pipe 105 is laid between the soil compaction layer 107 and the gravel layer 104; the parts of the overflow well 108 positioned on the vegetation layer 101, the soil layer 102, the sand layer 103 and the gravel layer 104 are poured by using water-permeable concrete, and the part positioned on the ash soil compaction layer 107 is poured by using water-impermeable concrete; the adjacent overflow wells 108 are communicated with each other by rainwater drainage pipes 110.
The diameter of the rainwater drainage pipe 110 is larger than that of the perforated drainage pipe 105 entering the overflow well 108, the diameter of the perforated drainage pipe 105 is 200mm, and the diameter of the rainwater drainage pipe is 300 mm.
The perforated drain pipes 105 are uniformly laid with a gradient coefficient of 1%.
The top of the overflow well 108 is 15cm higher than the vegetation layer, a groove is reserved when the top of the overflow well 108 is poured, and the groove is used for placing a stainless steel drainage grate.
A plurality of water permeable holes are uniformly arranged on the perforated drain pipe 105, and an anti-seepage filter screen 109 is also coated outside the perforated drain pipe 105.
The thickness of the soil layer 102 is 450mm, the thickness of the sand layer 103 is 100mm, and the thickness of the gravel layer 104 is 250 mm.
As shown in fig. 2, the perforated drain pipe 105 is arranged in the ± 45 degree direction along the axial direction of the rain water drain pipe 110.
An impermeable membrane 106 is laid on the lime soil compaction layer 107, and the impermeable membrane 106 is positioned below the perforated drain pipe 105.
The perforated drain pipes 105 are all prefabricated concrete perforated drain pipes in a factory; the upper half part of the perforated drain pipe 105 is a prefabricated concrete perforated structure, and the lower half part of the perforated drain pipe 105 is a prefabricated concrete non-perforated structure.
As shown in fig. 3, the end of the perforated drain pipe 105 near the overflow well 8 is prefabricated with a semicircular baffle 111, the semicircular baffle 111 is located at the lower half part of the perforated drain pipe, and the semicircular baffle is provided to collect part of the rainwater infiltrated, provide the moisture required by the growth of the earth surface plants, and relieve the downstream drainage and pressure regulation.
The utility model discloses a formula of sinking greenery patches drainage structures work process that sponge city was used as follows:
a sunken green land drainage structure sequentially comprises a vegetation layer 101, a planting soil layer 102 with the thickness of 450mm, a sand stone layer 103 with the thickness of 100mm, a gravel layer 104 with the thickness of 250mm, a perforated drainage pipe 105, an anti-seepage filter screen 106 and a lime soil compaction layer 107 from top to bottom. The overflow well body has water permeability and filtering capability, and when surface runoff or passenger flow is generated, the sunken green land drainage structure can absorb the surface runoff and the passenger flow, so that urban inland inundation can be prevented. After rainwater gets into formula greenery patches that sinks, reach gravel layer 103 through planting soil layer 102 and filter the rainwater that permeates through gravel layer 103, the rainwater assembles to DN200 perforation drain pipe through the gravel layer, DN200 perforation drain pipe evenly lays around the overflow well according to 1% gradient coefficient, filters the rainwater and passes through perforation drain pipe drainage to the overflow well, collects by DN300 rainwater drain pipe at last and holds.
During the use, the water permeability that the overflow well body possessed reaches and the prevention of seepage filter screen that the drain pipe outsourcing set up plays certain filtration and purification effect to the rainwater that permeates, is favorable to the quick infiltration, collection and the collection of runoff rainwater to further improve the water absorbing capacity of formula greenery patches that sink, with reducing the surface runoff, improve the comprehensive utilization efficiency of water, promote the cyclic utilization of rainwater.
The part below the plain soil layer of the overflow well is poured by traditional impervious concrete to prevent rainwater from infiltrating to damage the plain soil layer of the foundation; the parts above the plain soil layer of the overflow well are poured by the pervious concrete, so that the rainwater can quickly infiltrate and the filtering and purifying effects can be achieved. The overflow well formed by pouring concrete can avoid the collapse of the side wall of the drainage structure, can bear the impact of long-term water flow on the inner part of the overflow well, and is safe, reliable and stable in structure.
Rainwater drain pipe diameter is greater than the perforation drain pipe diameter that the overflow well was laid all around in the overflow well, can be used for guaranteeing that the rainwater that gets into in the overflow well body can discharge the collection fast and hold, avoids rivers excessively fast, the flow and the jam that causes.
DN200 concrete perforated drain pipe is laid above the impermeable membrane, and an impermeable filter screen is wrapped outside the perforated drain pipe to prevent sand from penetrating. Perforation drain pipe arranges along rainwater drain pipe direction 45 degrees directions, compares with the perforation drain pipe that traditional vertically and horizontally staggered arranged, and this mode of arranging is favorable to enlarging its area that receives water to infiltrate collection, collection of rainwater and hold and cyclic utilization.
The perforated drain pipe is made of precast concrete and aims to reduce construction cost and prolong the service life of the pipeline.
Claims (10)
1. A sunk greenbelt drainage structure for a sponge city is characterized by comprising a plurality of overflow wells (108), wherein the overflow wells (108) sequentially penetrate through a vegetation layer (101), a soil layer (102), a sand layer (103) and a gravel layer (104) from top to bottom, and the bottoms of the overflow wells (108) directly reach a lime-soil compacted layer (107); the side wall of the overflow well (108) is also communicated with a perforated drain pipe (105), and the perforated drain pipe (105) is laid between the ash soil compaction layer (107) and the gravel layer (104); the parts of the overflow well (108) positioned on the vegetation layer (101), the soil layer (102), the sand layer (103) and the gravel layer (104) are poured by using water-permeable concrete, and the part positioned on the lime-soil compacted layer (107) is poured by using water-impermeable concrete; the overflow wells (108) are communicated with each other by rainwater drainage pipes (110).
2. The sunk greenbelt drainage structure for sponge cities as claimed in claim 1, wherein the diameter of the rainwater drainage pipe (110) is larger than the diameter of the perforated drainage pipe (105) laid around the overflow well (108), the diameter of the perforated drainage pipe (105) is 200mm, and the diameter of the rainwater drainage pipe (110) is 300 mm.
3. The submerged greenbelt drainage structure for sponge cities as claimed in claim 2, wherein the perforated drainage pipes (105) are uniformly laid in the submerged greenbelt structure layer according to a gradient coefficient of 1%.
4. The submerged greenbelt drainage structure for the sponge city as claimed in claim 1, wherein the top of the overflow well (108) is 15cm higher than the vegetation layer, and a groove is reserved when the top of the overflow well (108) is poured and is used for placing a stainless steel drainage grate.
5. The submerged greenbelt drainage structure for sponge cities as claimed in claim 1, wherein the perforated drainage pipe (105) is uniformly provided with a plurality of water permeable holes, and the perforated drainage pipe (105) is further externally coated with an impermeable screen (109).
6. A sinking greenbelt drainage structure for sponge cities as claimed in claim 1, wherein the perforated drain pipe (105) is arranged along the rainwater drain pipe (110) in the direction of ± 45 degrees in the axial direction.
7. A sponge urban sunken greenbelt drainage structure according to claim 1 wherein the soil layer (102) is 450mm thick, the gravel layer (103) is 100mm thick and the gravel layer (104) is 250mm thick.
8. A sinking greenbelt drainage structure for sponge cities as claimed in claim 1, wherein an impermeable membrane (106) is further laid on the soil compaction layer (107), and the impermeable membrane (106) is positioned below the perforated drainage pipe (105).
9. The submerged greenbelt drainage structure for sponge cities as claimed in claim 1, wherein the perforated drainage pipes (105) are all factory-prefabricated concrete perforated drainage pipes; the upper half part of the perforated drain pipe (105) is a prefabricated concrete perforated structure, and the lower half part of the perforated drain pipe (105) is a prefabricated concrete non-perforated structure.
10. A sinking greenbelt drainage structure for sponge cities as claimed in claim 1, wherein the perforated drain pipe (105) is prefabricated with semicircular baffles (111) at both ends.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020137796.6U CN211898784U (en) | 2020-01-20 | 2020-01-20 | Sunken greenery patches drainage structures that sponge city was used |
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| CN202020137796.6U CN211898784U (en) | 2020-01-20 | 2020-01-20 | Sunken greenery patches drainage structures that sponge city was used |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112609803A (en) * | 2020-12-04 | 2021-04-06 | 北京京润园林绿化工程有限公司 | Afforestation drainage system |
| CN112854405A (en) * | 2021-01-07 | 2021-05-28 | 江苏龙腾工程设计股份有限公司 | Multifunctional biological detention pond and construction method thereof |
| CN113376077A (en) * | 2021-08-13 | 2021-09-10 | 昆山市建设工程质量检测中心 | On-site actual measurement device and method for evaluating performance of biological retention facility sponge |
| CN113632613A (en) * | 2021-07-20 | 2021-11-12 | 北京丹青园林绿化有限责任公司 | Method for improving water infiltration rate of garden green land soil |
| CN113818534A (en) * | 2021-09-17 | 2021-12-21 | 中国一冶集团有限公司 | Biological retention facility for sponge urban road |
| CN116201217A (en) * | 2023-01-10 | 2023-06-02 | 成都建工第三建筑工程有限公司 | Green sponge biological retention structure and construction method thereof |
| CN116220177A (en) * | 2023-01-17 | 2023-06-06 | 西安理工大学 | Drainage gallery structure for collecting and utilizing road rainwater to carry out green belt infiltrating irrigation |
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2020
- 2020-01-20 CN CN202020137796.6U patent/CN211898784U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112609803A (en) * | 2020-12-04 | 2021-04-06 | 北京京润园林绿化工程有限公司 | Afforestation drainage system |
| CN112854405A (en) * | 2021-01-07 | 2021-05-28 | 江苏龙腾工程设计股份有限公司 | Multifunctional biological detention pond and construction method thereof |
| CN113632613A (en) * | 2021-07-20 | 2021-11-12 | 北京丹青园林绿化有限责任公司 | Method for improving water infiltration rate of garden green land soil |
| CN113376077A (en) * | 2021-08-13 | 2021-09-10 | 昆山市建设工程质量检测中心 | On-site actual measurement device and method for evaluating performance of biological retention facility sponge |
| CN113818534A (en) * | 2021-09-17 | 2021-12-21 | 中国一冶集团有限公司 | Biological retention facility for sponge urban road |
| CN116201217A (en) * | 2023-01-10 | 2023-06-02 | 成都建工第三建筑工程有限公司 | Green sponge biological retention structure and construction method thereof |
| CN116201217B (en) * | 2023-01-10 | 2023-11-21 | 成都建工第三建筑工程有限公司 | Green sponge biological retention structure and construction method thereof |
| CN116220177A (en) * | 2023-01-17 | 2023-06-06 | 西安理工大学 | Drainage gallery structure for collecting and utilizing road rainwater to carry out green belt infiltrating irrigation |
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