Large-flow rainwater disconnection buffer pool
By designing a buffer pool with high flow rainwater disconnection, and using a combined structure of rainwater riser, a collection pool, a diversion channel, a purification pool and a gravel aquifer, the destructive problems of traditional facilities when dealing with high flow rainwater are solved, the effective regulation and purification of rainwater is achieved, and the efficiency of rainwater resource utilization and landscape effect are improved.
Patent Information
- Application Number
- CN202422063668.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-08-23
AI Technical Summary
Traditional rainwater disconnection facilities are prone to damage when dealing with high-speed and high-flow rainwater runoff, and cannot effectively absorb and store, and cause destructive erosion to buildings and green spaces.
A large-flow rainwater disconnection buffer pool is designed, including rainwater riser, collection tank, diversion channel, purification pool, gravel aquifer and soil layer. Through the combination of oblique drainage, multi-layer structure and permeable materials, the buffering and purification of rainwater is achieved.
It effectively avoids the destructive erosion of buildings and green spaces by high-speed and high-flow rainwater, realizes the delayed adjustment, purification and resource utilization of rainwater, reduces the outflow runoff, and has a good landscape effect.
Smart Images
Figure CN223164002U_ABST
Abstract
Description
Technical field
[0001] The utility model relates to the technical field of sponge city construction, in particular to a large-flow rainwater disconnection buffer pool. [Background Technology]
[0002] Sponge cities have developed rapidly in recent years, and related technologies have been greatly improved. Among them, rainwater pipe disconnection technology can significantly reduce rooftop rainwater runoff, enabling rainwater collection and reuse, alleviating urban waterlogging to a certain extent while also realizing rainwater resource utilization.
[0003] Rainwater disconnection refers to the disconnection of downspouts, which redirects rooftop rainwater runoff to sponge facilities surrounding the building for retention and infiltration, or to rainwater collection facilities for reuse. Traditional rainwater disconnection facilities are often directly connected to green spaces or collected through simple pretreatment structures and transmission channels. While they can handle rooftop runoff during light and moderate rain events, they are limited in their treatment of runoff from large areas of gray roofs during heavy rain. The impact of high-speed, high-volume rainwater runoff can easily damage the disconnection facilities, causing splashing, destructive erosion of soil and vegetation, and an inability to promptly absorb and store rainwater.
[0004] The large-flow rainwater disconnect buffer tank of the utility model solves the above-mentioned practical problems, and has been applied in practice in the treatment of rainwater runoff from the roofs of large industrial plants, realizing rainwater dispersion treatment technology, avoiding the destructive scouring of high-speed and large-flow rainwater on the main building and green space, and having the characteristics of delayed regulation of rainwater, purification of rainwater, reduction of external discharge runoff, replenishment of groundwater, and good landscape effect. [Utility Model Content]
[0005] The utility model aims to provide a large-flow rainwater disconnection buffer pool.
[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0007] A large-flow rainwater disconnect buffer pool includes a rainwater riser, a collection pool, a diversion channel, a purification pool, a gravel aquifer, and a soil layer. The characteristics are: the rainwater riser is connected to the roof drain outlet of the building and the collection pool, the collection pool is composed of a splash cover, a pool wall, a pool bottom, and a water retaining weir, the diversion channel is composed of a diversion channel wall and a pebble channel bed, the purification pool is composed of gabions and fillers, the purification pool is connected to the end of the diversion channel and the green space, the gravel aquifer is located at the bottom of the pool and the bottom of the pebble channel bed, and the soil layer is located at the bottom of the gravel aquifer.
[0008] In the large-flow rainwater disconnection buffer pool of the present utility model, the discharge pipe at the end of the rainwater riser forms a 45° angle with the bottom of the collection pool, the rainwater disconnection port discharges water obliquely downward, and the outlet pipe diameter is 200 mm to 250 mm.
[0009] In the large-flow rainwater disconnection buffer pool of the present utility model, the length of the collection pool is not less than 3 m, the width is 0.8 m to 1.2 m, and the height is not less than 0.7 m.
[0010] In the large-flow rainwater disconnection buffer pool of the present utility model, the splash-proof cover plate is precast concrete with a thickness of 0.08 m to 0.1 m, the pool wall is precast concrete with a thickness of 0.2 m to 0.3 m, and the pool bottom is permeable concrete with a thickness of 0.2 m to 0.3 m.
[0011] In the large-flow rainwater disconnection buffer pool of the present utility model, the water retaining weir is arranged in a T-shaped staggered manner by a first-level water retaining weir and a second-level water retaining weir, and is fixed by planting steel bars. The included angle between the first-level water retaining weir and the water flow direction is 30° to 60°, the height is not less than 0.3 m, the included angle between the second-level water retaining weir and the water flow direction is 130° to 150°, the height is not less than 0.2 m, and the height difference between the first-level water retaining weir and the second-level water retaining weir is not less than 0.1 m.
[0012] In the large-flow rainwater disconnection buffer pool of the present utility model, the length of the diversion channel is not less than 3 m, the width is 0.8 m to 1.2 m, and the slope is 10% to 15%.
[0013] In the large-flow rainwater disconnection buffer pool of the present utility model, the height of the diversion channel wall is 0.2 m to 0.3 m, the pebble channel bed is a permeable concrete foundation, and cobblestones with a particle size of 5 cm to 25 cm are placed upright.
[0014] In the large-flow rainwater disconnection buffer pool of the present utility model, the depth of the purification pool is not less than 0.4 m, a permeable geotextile is laid at the bottom, water purification fillers are filled, and it is fixed with a stone cage.
[0015] In the large-flow rainwater disconnection buffer pool of the present utility model, the thickness of the crushed stone water storage layer is not less than 0.1 m, and a permeable geotextile is laid at the bottom.
[0016] The large-flow rainwater disconnection buffer pool of the present utility model has the following beneficial effects: it optimizes the deficiencies of the structure of traditional rainwater disconnection facilities, solves the problem of the absorption of large-area gray roofs during heavy rain, avoids the destructive scouring of high-speed and large-flow rainwater on the building main body and green space, and has the characteristics of delaying and regulating rainwater, purifying rainwater, reducing the external drainage runoff, replenishing groundwater, and having good landscape effects.
Description of the Drawings
[0017] Figure 1This is a sectional view of an embodiment of the large-flow rainwater disconnection buffer pool of the present utility model.
[0018] Figure 2 This is a plan view of an embodiment of the large-flow rainwater disconnection buffer pool of the present utility model.
[0019] The reference numerals include:
[0020] 1 - rainwater vertical pipe, 2 - collection pool, 21 - splash-proof cover plate, 22 - pool wall, 23 - pool bottom, 24 - planted steel bars, 25 - first water retaining weir, 26 - second water retaining weir, 3 - diversion channel, 31 - diversion channel wall, 32 - pebble channel bed, 4 - purification pool, 41 - stone cage, 42 - filler, 5 - gravel water storage layer, 6 - soil layer, 7 - green space
Specific Embodiment
[0021] In order to make the purpose, technical solution and its beneficial technical effects of the present utility model clearer, the following further details the present utility model in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0022] As Figure 1 shown, it is a sectional view of an embodiment of the large-flow rainwater disconnection buffer pool of the present utility model. This large-flow rainwater disconnection buffer pool can be applied to the technical field of sponge city construction, avoiding the destructive scouring of high-speed and large-flow rainwater on the building main body and green space, and having the characteristics of delaying and regulating rainwater, purifying rainwater, reducing the external drainage runoff, supplementing groundwater, and good landscape effect. The large-flow rainwater disconnection buffer pool in this embodiment includes a rainwater vertical pipe (1), a collection pool (2), a diversion channel (3), a purification pool (4), a gravel water storage layer (5), and a soil layer (6), and is characterized in that: the rainwater vertical pipe (1) is connected to the building roof drain outlet and the collection pool (2), the collection pool (2) is composed of a splash-proof cover plate (21), a pool wall (22), a pool bottom (23), and a water retaining weir, the diversion channel (3) is composed of a diversion channel wall (31) and a pebble channel bed (32), the purification pool (4) is composed of a stone cage (41) and a filler (42), the purification pool (4) is connected to the end of the diversion channel and the green space, the gravel water storage layer (5) is located at the bottom of the pool bottom (23) and the pebble channel bed (32), and the soil layer (6) is located at the bottom of the gravel water storage layer (5).
[0023] The end discharge pipe of the rainwater vertical pipe (1) forms a 45° angle with the pool bottom of the collection pool, and the rainwater disconnection port discharges water obliquely downward, and the outlet pipe diameter is 200 mm to 250 mm.
[0024] The length of the collection pool (2) is not less than 3 m, the width is 0.8 m to 1.2 m, and the height is not less than 0.7 m.
[0025] The splash-proof cover plate (21) is made of precast concrete with a thickness of 0.08 m to 0.1 m. The pool wall (22) is made of precast concrete with a thickness of 0.2 m to 0.3 m. The pool bottom (23) is made of permeable concrete with a thickness of 0.2 m to 0.3 m.
[0026] The water retaining weir is arranged in a T-shaped staggered pattern by the first-level water retaining weir (25) and the second-level water retaining weir (26) and fixed by the planted steel bars (24). The included angle between the first-level water retaining weir (25) and the water flow direction is 30° to 60°, and the height is not less than 0.3 m. The included angle between the second-level water retaining weir (26) and the water flow direction is 130° to 150°, and the height is not less than 0.2 m. The height difference between the first-level water retaining weir (25) and the second-level water retaining weir (26) is not less than 0.1 m.
[0027] The length of the diversion channel (3) is not less than 3 m, the width is 0.8 m to 1.2 m, and the slope is 10% to 15%.
[0028] The height of the diversion channel wall (31) is 0.2 m to 0.3 m. The pebble channel bed (32) is a permeable concrete foundation, and cobblestones with a particle size of 5 cm to 25 cm are placed upright.
[0029] The depth of the purification pool (4) is not less than 0.4 m. A permeable geotextile is laid at the bottom, and water purification fillers (42) are filled and fixed with wire cages (41).
[0030] The thickness of the gravel water storage layer is not less than 0.1 m, and a permeable geotextile is laid at the bottom.
[0031] Based on the disclosure and teachings of the above specification, those skilled in the art of the present utility model can also make appropriate changes and modifications to the above embodiments. Therefore, the present utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present utility model should also fall within the protection scope of the claims of the present utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model.
Claims
1. A large-flow rainwater disconnection buffer pool, comprising a rainwater riser, a collection pool, a diversion channel, a purification pool, a crushed stone water storage layer, and a soil layer, wherein: The rainwater riser is connected to the roof drain outlet of the building and the collection pool. The collection pool consists of a splash-proof cover plate, a pool wall, a pool bottom, and a water retaining weir. The diversion channel consists of a diversion channel wall and a pebble channel bed. The purification pool consists of a stone cage and packing materials. The purification pool is connected to the end of the diversion channel and the green space. The gravel water storage layer is located at the bottom of the pool bottom and the pebble channel bed. The soil layer is located at the bottom of the gravel water storage layer.
2. The large-flow rainwater disconnection buffer pool according to claim 1, wherein: The discharge pipe at the end of the rainwater riser forms a 45° angle with the bottom of the collection pool, and the rainwater disconnection port discharges water obliquely downward. The diameter of the water outlet is 200mm - 250mm.
3. The large-flow rainwater disconnection buffer pool according to claim 1, characterized in that: The length of the collection pool is not less than 3m, the width is 0.8m - 1.2m, and the height is not less than 0.7m.
4. The large-flow rainwater disconnection buffer pool according to claim 1, characterized in that: The splash-proof cover plate is precast concrete with a thickness of 0.08m - 0.1m. The pool wall is precast concrete with a thickness of 0.2m - 0.3m. The pool bottom is permeable concrete with a thickness of 0.2m - 0.3m.
5. The large-flow rainwater disconnection buffer pool according to claim 1, characterized in that: The water retaining weir is arranged in a T-shaped staggered pattern by a first-level water retaining weir and a second-level water retaining weir, and is fixed by planting steel bars. The included angle between the first-level water retaining weir and the water flow direction is 30° - 60°, and the height is not less than 0.3m. The included angle between the second-level water retaining weir and the water flow direction is 130° - 150°, and the height is not less than 0.2m. The height difference between the first-level water retaining weir and the second-level water retaining weir is not less than 0.1m.
6. The large-flow rainwater disconnection buffer pool according to claim 1, characterized in that: The length of the diversion channel is not less than 3m, the width is 0.8m - 1.2m, and the slope is 10% - 15%.
7. The large-flow rainwater disconnection buffer pool according to claim 1, characterized in that: The height of the diversion channel wall is 0.2m - 0.3m. The pebble channel bed is a permeable concrete foundation, and cobblestones with a particle size of 5cm - 25cm are placed upright.
8. The large-flow rainwater disconnection buffer pool according to claim 1, wherein: The depth of the purification pool is not less than 0.4m. A permeable geotextile is laid at the bottom, and water quality purification packing materials are filled and fixed with a stone cage.
9. The large-flow rainwater disconnection buffer pool according to claim 1, wherein: The thickness of the gravel water storage layer is not less than 0.1m, and a permeable geotextile is laid at the bottom.