Rainwater utilization system for sponge community
By designing a rainwater utilization system for sunken greening squares, drainage institutions and riser mechanisms in the sponge community, the problems of increased flood flow and water pollution caused by urbanization are solved, and the effective utilization of rainwater and the protection of hydrological functions are achieved.
Patent Information
- Application Number
- CN202421697560.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-17
AI Technical Summary
During the process of urbanization, the increase in water-impermeable area in the city has led to an increase in flood peak flow, an increase in runoff coefficient and an increase in the load of surface source pollution. The traditional drainage model has failed to effectively utilize rainwater, resulting in flood water accumulation and intensified water pollution.
Design a stormwater utilization system for sponge communities, including sunken green squares, drainage mechanisms and riser mechanisms. The sunken green square is equipped with a drainage mechanism and a riser mechanism through a structural molding system with a low middle and a high perimeter, so as to realize the collection, filtration, storage and utilization of rainwater.
Through the rainwater utilization system, the peak flow rate, runoff coefficient and discharge speed can be reduced, the pressure on urban drainage systems can be reduced, flood waterlogging can be reduced, natural hydrological functions can be protected, and pollution to river water systems can be reduced.
Smart Images
Figure CN222810107U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to urban community construction, in particular to a rainwater utilization system for sponge communities. Background Art
[0002] In the context of my country's urbanization, the urban population has grown, and cities are filled with various concrete buildings, which has greatly reduced the area for storing rainwater. In addition, the traditional urban drainage construction model believes that the more rainwater is drained, the faster and smoother it is, the better. This "fast drainage" model does not consider the recycling of water. In this case, the urban surface runoff has increased significantly, causing floods, waterlogging, deterioration of river system ecology, and increased water pollution. Utility Model Content
[0003] The purpose of the utility model is to overcome the shortcomings of the above-mentioned background technology and to provide a rainwater utilization system for sponge communities, so that it aims to adopt source decentralized measures to control rainwater during community construction, and utilize the facilities and conditions within the community to simulate the natural water cycle process as much as possible, effectively alleviate urban rainwater management problems such as increased peak flow, increased runoff coefficient and increased surface source pollution load caused by the increase in the impervious area of the community, reduce the impact on hydrological characteristics, and maintain and protect natural hydrological functions.
[0004] The utility model provides a rainwater utilization system for a sponge community, comprising a sunken green plaza arranged on one side of a community building, the sunken green plaza presenting a structural type with a low middle and high periphery, a storage and drainage mechanism being provided at the lowest point in the middle of the sunken green plaza, and a riser mechanism connected to a roof drain outlet of the community building being provided on one side of the sunken green plaza close to the community building.
[0005] In the above technical solution, the storage and drainage mechanism includes an overflow rainwater outlet located at the lowest point in the middle of the sunken green plaza, and a vertically arranged storage well is provided at the bottom of the overflow rainwater outlet.
[0006] In the above technical solution, a plurality of radially arranged seepage pipes are evenly distributed along the circumferential direction on the lower side wall of the storage well.
[0007] In the above technical solution, a plurality of holes are evenly distributed on the wall of the seepage pipe, and the outer wall of the seepage pipe is covered with a permeable geotextile.
[0008] In the above technical solution, a flood discharge pipe connected to the upper side wall of the storage well is provided, a walkway is provided on the other side of the sunken green plaza opposite to the community buildings, a drainage network is provided under the walkway, the flood discharge pipe is connected to the drainage network, and one end of the flood discharge pipe connected to the storage well is higher than the other end connected to the drainage network.
[0009] In the above technical solution, the storage and drainage mechanism also includes a gravel area arranged along the circumference of the water inlet of the overflow rainwater outlet, and a rubble stone ring is provided around the gravel area. The rubble stone ring and the top of the overflow rainwater outlet are both higher than the gravel area. The gravel area is funnel-shaped with a low middle and high periphery.
[0010] In the above technical solution, the riser mechanism includes a drainage riser connected to the drainage outlet of the roof of the community building, the downspout of the drainage riser is connected to an energy dissipation block, and the bottom of the energy dissipation block is provided with an energy dissipation pool arranged on the side of the sunken green plaza.
[0011] In the above technical solution, the energy dissipation block is a gabion stone cage structure, and the energy dissipation pool is a gravel structure.
[0012] In the above technical solution, a waterproof baffle is provided on the side of the energy dissipation block facing the community buildings.
[0013] The utility model is used for the rainwater utilization system of the sponge community, and has the following beneficial effects:
[0014] 1. The riser mechanism uses the gabion stone cage structure of the energy dissipation block and the gravel of the energy dissipation pool to slow down and dissipate the energy of the roof runoff of the community buildings, reducing the scouring of the ground, and can also divert the roof rainwater to the sponge system for utilization.
[0015] 2. The sunken green plaza can not only collect and utilize surface runoff through its concave setting, but also reduce various non-point source pollution in rainwater through various plants, thereby alleviating pollution to river systems.
[0016] 3. When the rainfall is less, the sunken green plaza can fully realize the storage and utilization of the roof and the ground; when the rainfall is heavy and exceeds the rainwater storage capacity of the sunken green plaza, the storage and drainage mechanism begins to play a role, and the rainwater overflows the rubble, is filtered through the gravel area, and enters the storage well through the overflow rainwater outlet. Since the height of the flood discharge pipe is set at a high level, the rainwater enters the storage well and begins to be stored. The rainwater that exceeds the storage capacity of the storage well is discharged into the drainage network of the trail through the flood discharge pipe.
[0017] 4. When it rains, the adjacent storage wells are connected through infiltration pipes, which can reduce the impact of differences in the amount of rainwater collected in the sunken green plaza and store rainwater to the maximum extent; when there is no rainfall, the porous infiltration pipes can slowly release the rainwater accumulated in the storage wells into the soil to nourish various plants in the sunken green plaza.
[0018] 5. Through the energy dissipation measures of the riser structure, the synergistic effect of the sunken green plaza and the storage and drainage structure, the peak flow, runoff coefficient and discharge speed can be reduced, which not only reduces the pressure on the urban drainage system, but also reduces flood waterlogging. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a top view of the structure of the rainwater utilization system for sponge communities of the utility model;
[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the AA section;
[0021] Figure 3 for Figure 1 Schematic diagram of the structure of the BB section. DETAILED DESCRIPTION
[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but the embodiments should not be construed as limiting the present invention.
[0023] Reference Figures 1 to 3 As shown, the utility model provides a rainwater utilization system for a sponge community, comprising a walkway 13, a sunken green plaza 5, a storage and drainage mechanism and a riser mechanism; the sunken green plaza 5 is arranged between the walkway 13 and the community building 1, and is in a concave form; the storage and drainage mechanism is arranged at the lowest point of the sunken green plaza 5, and the flood discharge pipe 11 of the storage and drainage mechanism is connected to the drainage network 12 of the walkway 13; the riser mechanism comprises a drainage riser 2, an energy dissipation block 3 and an energy dissipation pool 4, the upper part of the riser mechanism is connected to the roof drain outlet of the community building 1, and the lower part of the riser mechanism is connected to the sunken green plaza 5.
[0024] Furthermore, the energy dissipation block 3 is a gabion stone cage structure, the specification of the gabion stone cage is a 60cm*60cm*60cm cube, and a waterproof baffle is set on the side of the energy dissipation block 3 facing the community building 1; the energy dissipation pool 4 is a gravel structure, and the gravel particle size is 4 to 6cm; the energy dissipation pool 4 is semicircular, with a diameter of 1.5m to 2m; the drainage riser 2 is a conventional drainage pipe.
[0025] Furthermore, the upper part of the drainage riser 2 is connected to the roof drainage outlet of the community building 1, and the lower part passes through the impermeable baffle and extends into the energy dissipation block 3; the energy dissipation block 3 is placed on the energy dissipation pool 4, and the energy dissipation pool 4 is placed on the sunken green plaza 5.
[0026] Furthermore, the storage and drainage mechanism includes a rubble stone ring 6, a gravel area 7, an overflow rainwater outlet 8, a storage well 9, a seepage pipe 10 and a flood discharge pipe 11.
[0027] Furthermore, the diameter of the rough stone ring 6 is 20-30 cm, the diameter of the gravel in the gravel area 7 is 4-6 cm, and the gravel area 7 is arranged in a circle with a diameter of 1.5-2.5 m.
[0028] Furthermore, the rubble stone ring 6 is arranged outside the gravel area 7, and the gravel area 7 is arranged around the overflow rainwater outlet 8; the rubble stone ring 6 is about 4 to 8 cm higher than the gravel area 7, and the top of the overflow rainwater outlet 8 is about 4 to 8 cm higher than the gravel area 7.
[0029] Furthermore, the storage well 9 is sequentially arranged with a seepage pipe 10, a flood discharge pipe 11 and an overflow rainwater outlet 8 from bottom to top.
[0030] Furthermore, the infiltration pipe 10 is porous and is wrapped with multiple layers of permeable geotextile on the outside, generally 2 to 3 layers; two adjacent storage wells 9 are connected through the infiltration pipe 10; the storage well 9 is connected to the drainage network 12 of the trail 13 through the flood discharge pipe 11.
[0031] The working principle of the utility model is as follows:
[0032] 1. The riser mechanism uses the gabion stone cage structure of the energy dissipation block 3 and the gravel of the energy dissipation pool 4 to slow down and dissipate the roof runoff of the community building 1, reducing the scouring of the ground, and can also divert the roof rainwater to the sponge system for utilization.
[0033] 2. The sunken green plaza 5 can not only collect and utilize surface runoff through its concave setting, but also reduce various non-point source pollution in rainwater through various plants, thereby alleviating pollution to the river system.
[0034] 3. When the rainfall is less, the sunken green plaza 5 can fully realize the storage and utilization of the roof and the ground; when the rainfall is heavy and exceeds the rainwater storage capacity of the sunken green plaza 5, the storage and drainage mechanism begins to play a role, and the rainwater overflows the rubble ring 6, is filtered through the gravel area 7, and enters the storage well 9 through the overflow rainwater outlet 8. Since the height of the flood discharge pipe 11 is set at a high level, the rainwater enters the storage well 9 and begins to be stored. The rainwater that exceeds the storage capacity of the storage well 9 is discharged into the drainage network 12 of the walkway 13 through the flood discharge pipe 11.
[0035] 4. When it rains, the adjacent storage wells 9 are connected through the infiltration pipes 10, so the impact of the difference in the amount of rainwater collected by the sunken green plaza 5 can be reduced, and rainwater can be stored to the maximum extent; when there is no rainfall, the porous infiltration pipes 10 can slowly release the rainwater accumulated in the storage wells 9 into the soil to nourish various plants in the sunken green plaza 5.
[0036] 5. Through the energy dissipation measures of the riser mechanism, the synergistic effect of the sunken green plaza 5 and the storage and drainage mechanism, the peak flow, runoff coefficient and discharge speed are reduced, which not only reduces the pressure on the urban drainage system, but also reduces flood waterlogging.
[0037] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
[0038] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.
Claims
1. A rainwater utilization system for a sponge community, characterized by: The invention comprises a sunken green plaza (5) arranged on one side of a residential building (1), wherein the sunken green plaza (5) presents a structural type with a low middle and high periphery, a storage and drainage mechanism is provided at the lowest point in the middle of the sunken green plaza (5), and a riser mechanism connected to the roof drainage outlet of the residential building (1) is provided on the side of the sunken green plaza (5) close to the residential building (1).
2. The rainwater utilization system for sponge communities according to claim 1, characterized in that: The storage and drainage mechanism comprises an overflow rainwater outlet (8) arranged at the lowest point in the middle of the sunken green plaza (5), and a vertically arranged storage well (9) is provided at the bottom of the overflow rainwater outlet (8).
3. The rainwater utilization system for sponge communities according to claim 2 is characterized in that: A plurality of radially arranged seepage pipes (10) are evenly distributed along the circumferential direction on the lower side wall of the storage well (9).
4. The rainwater utilization system for sponge communities according to claim 3 is characterized in that: A plurality of holes are evenly distributed on the wall of the seepage pipe (10), and the outer wall of the seepage pipe (10) is covered with a permeable geotextile.
5. The rainwater utilization system for sponge communities according to claim 4 is characterized in that: A flood discharge pipe (11) connected to the storage well (9) is provided on the upper side wall thereof; a walkway (13) is provided on the other side of the sunken green plaza (5) opposite to the community building (1); a drainage network (12) is provided below the walkway (13); the flood discharge pipe (11) is connected to the drainage network (12); and one end of the flood discharge pipe (11) connected to the storage well (9) is higher than one end connected to the drainage network (12).
6. The rainwater utilization system for sponge communities according to claim 5 is characterized in that: The storage and drainage mechanism also includes a gravel area (7) arranged along the circumference of the water inlet of the overflow rainwater outlet (8), and a rubble stone ring (6) is arranged around the gravel area (7). The tops of the rubble stone ring (6) and the overflow rainwater outlet (8) are higher than the gravel area (7), and the gravel area (7) is in a funnel shape with a low middle and high periphery.
7. The rainwater utilization system for sponge communities according to claim 6 is characterized by: The riser mechanism comprises a drainage riser (2) connected to a drainage outlet on a roof of a residential building (1); the drain outlet of the drainage riser (2) is connected to an energy dissipation block (3); and an energy dissipation pool (4) arranged on the side of a sunken green plaza (5) is provided at the bottom of the energy dissipation block (3).
8. The rainwater utilization system for sponge communities according to claim 7 is characterized by: The energy dissipation block (3) is a gabion stone cage structure, and the energy dissipation pool (4) is a gravel structure.
9. The rainwater utilization system for sponge communities according to claim 8, characterized in that: A water-proof baffle is provided on the side of the energy dissipation block (3) facing the community building (1).