Sunken green land drainage structure
By installing infiltration pipes and overflow outlets in sunken green spaces, combined with rainwater ditches, direct discharge of rainwater is achieved, solving the problems of high investment and high maintenance costs caused by deep burial of rainwater pipes, simplifying drainage facilities, reducing project costs, and improving maintenance convenience.
Patent Information
- Application Number
- CN202423010474.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Existing technologies for rainwater drainage in sunken green spaces require deep burial of rainwater pipes, resulting in high project investment and high maintenance costs. Furthermore, the frequent intersections of rainwater and sewage pipes increase maintenance complexity.
The sunken green space structure is adopted, with infiltration pipes and overflow outlets installed on the planting soil layer, and grates installed next to the rainwater ditch. Rainwater enters the rainwater ditch directly through infiltration and overflow, avoiding the need to lay dedicated rainwater pipes, simplifying facilities and reducing maintenance costs.
It reduces the number of underground pipes, lowers project investment and maintenance costs, simplifies drainage facilities, is suitable for sponge city design in industrial sites, is suitable for rainwater drainage sites, and is convenient for later dredging and unblocking.
Smart Images
Figure CN223723726U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to drainage technical field, concretely relates to a sunken green land drainage structure. BACKGROUND
[0002] Industrial site sponge city design requirement is increasingly strict, in the past sponge city design sunken green land rainwater drainage generally adopts rainwater inlet and underground rainwater pipe network combined drainage (such as shown), the specific practice is to set overflow drainage device in the sunken green land, and the excess rainwater is overflowed to the rainwater well through the rainwater pipeline, and this design method has the problems of: ① rainwater pipeline laying is deep, and the engineering investment is big, because the pipeline is buried, and the soil requirement is covered (the top of the pipeline under the driveway is covered with not less than 700mm), the outdoor rainwater and sewage pipeline (the pipe diameter in the factory is generally DN300~600) is all gravity flow pipeline, and when the rainwater and sewage pipeline intersects, the rainwater pipeline is generally arranged below the sewage pipeline, which leads to the rainwater pipeline buried depth at least below 1.5m; ② the underground pipeline increases, leads to the increase of intersection position, and increases the later maintenance cost. Figure 2
[0003] In order to meet the drainage requirement of sponge city by using a simple method, and reduce project investment and later maintenance cost, the inventor designs a new sunken green land drainage structure, which can effectively combine the rainwater ditch drainage of industrial site with sponge city, meet the demand of industrial site sponge city, simplify the supporting facilities, reduce the project investment and reduce the later maintenance cost. SUMMARY
[0004] The sunken green land drainage structure provided by the utility model is characterized in that the upper layer of the sunken green land is a planting soil layer, the lower layer of the planting soil layer is a drainage layer, and the lower layer of the drainage layer is a raw soil layer; a permeation pipe is buried at the bottom of the drainage layer.
[0005] The drainage layer is filled with graded gravel, graded pebbles or ceramsite, and is mainly used for the permeation discharge of excess rainwater.
[0006] A rainwater ditch is arranged beside the sunken green land, the vertical wall of the side of the rainwater ditch close to the sunken green land is higher than the vertical wall of the side of the rainwater ditch away from the sunken green land, and the upper opening of the rainwater ditch is covered with a grating plate.
[0007] The pipe body of the permeation pipe is provided with permeation holes, and the drainage end of the permeation pipe penetrates through the vertical wall of one side of the rainwater ditch.
[0008] An overflow port is arranged on the upper part of the vertical wall of the side of the rainwater ditch close to the sunken green land, and the overflow port is 50~200mm higher than the upper surface of the planting soil layer.
[0009] The rainwater ditch is built by bricks or concrete.
[0010] The utility model discloses a beneficial effect: the utility model optimizes the drainage structure and drainage mode of sunken greenbelt, and the accumulated water in the sunken greenbelt is discharged into the rainwater ditch through the infiltration pipe and overflow port, and it does not need to specially lay rainwater pipeline for it. On the one hand, the number of buried pipelines is reduced, the investment is reduced, and the problem of rainwater pipeline and sewage pipeline intersection is avoided, on the other hand, the technical scheme is applicable to the site of rainwater ditch drainage outside the factory area, and the grating plate is arranged on the top of the rainwater ditch, and the dredging and unblocking are convenient in the later period. The technical scheme simplifies the drainage supporting facilities, reduces the project construction investment, reduces the later maintenance cost, and is simple to construct and maintain. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is the structural diagram of sunken greenbelt drainage structure of the utility model.
[0012] Figure 2 It is the structural diagram of sunken (concave) greenbelt drainage structure in the atlas 23BS14.
[0013] In the drawing: 1 planting soil layer;2 drainage layer;3 original soil layer;4 infiltration pipe;5 rainwater ditch;6 grating plate;7 overflow port;8 building outer wall;9 rainwater vertical pipe;10 overflow rainwater port;11 rainwater vertical well;12 rainwater pipeline. DETAILED DESCRIPTION
[0014] As Figure 1 Shown, the utility model provides a kind of sunken greenbelt drainage structure, and the upper layer of sunken greenbelt is planting soil layer 1, the lower surface of planting soil layer 1 is drainage layer 2, and the lower surface of drainage layer 2 is original soil layer 3;Infiltration pipe 4 is buried in the bottom of drainage layer 2.
[0015] Drainage layer 2 fills graded broken stone, graded pebble or ceramsite, and is mainly used for the infiltration discharge of excess rainwater.
[0016] Rainwater ditch 5 is set up beside sunken greenbelt, and the vertical wall of the side of rainwater ditch 5 close to sunken greenbelt is higher than the vertical wall of the other side of rainwater ditch 5 away from sunken greenbelt;The upper opening of rainwater ditch 5 is covered with grating plate 6.
[0017] The pipe body of infiltration pipe 4 has infiltration hole, and the drainage end of infiltration pipe 4 penetrates the vertical wall of one side of rainwater ditch 5.
[0018] Overflow port 7 is set up on the upper portion of the vertical wall of the side of rainwater ditch 5 close to sunken greenbelt, and overflow port 7 is 50mm-200mm higher than the upper surface of planting soil layer 1.
[0019] Rainwater ditch 5 is built with bricks or concrete.
[0020] When it rains, the rainwater on the roof of the building flows into the sunken green land through the rainwater standpipe 9 set on the outer wall 8 of the building (or the surrounding high ground). When the rainfall is small and the water level of the rainwater flowing into the sunken green land does not exceed the height of the overflow port 7, the rainwater seeps into the planting soil layer 1 and the drainage layer 2 and then enters the permeation pipe 4 to be discharged into the rainwater ditch 5. When the rainfall is large and the water level of the rainwater flowing into the sunken green land exceeds the height of the overflow port 7, part of the rainwater directly flows into the rainwater ditch 5 through the overflow port 7, and part of the rainwater seeps into the planting soil layer 1 and the drainage layer 2 and then enters the permeation pipe 4 to be discharged into the rainwater ditch 5.
[0021] Figure 2 is the sunken green land drainage structure in the atlas 23BS14, the planting soil layer 1 of the sunken green land is directly set on the original soil layer 3, the rainwater shaft 11 with an overflow rainwater port 10 is set in the sunken green land, the bottom of the rainwater shaft 11 extends into the original soil layer 3 and is connected with the rainwater pipeline 12 buried in the original soil layer 3. When it rains, the rainwater exceeding the position of the overflow rainwater port 10 flows into the rainwater pipeline 12 through the overflow rainwater port 10 and the rainwater shaft 11 to be discharged. The problems of this design mode are: ① the rainwater pipeline is laid deep, and the engineering investment is large; because the buried pipeline has the requirement of covering soil (the top of the pipeline under the driveway is covered with soil not less than 700 mm), the outdoor rainwater and sewage pipeline (the diameter of the pipeline in the factory is generally DN300-600) is a gravity flow pipeline, and when the rainwater and sewage pipelines intersect, the rainwater pipeline is generally set below the sewage pipeline, which leads to the buried depth of the rainwater pipeline being at least 1.5 m below; ② the increase of underground pipelines leads to the increase of intersection positions and the increase of the later maintenance cost.
Claims
1. A sunken green space drainage structure, characterized by: The upper layer of the sunken green land is a planting soil layer (1), the lower surface of the planting soil layer (1) is a drainage layer (2), the lower surface of the drainage layer (2) is a native soil layer (3); a permeation pipe (4) is embedded at the bottom of the drainage layer (2); A rainwater ditch (5) is arranged beside the sunken green land, the vertical wall of the side of the rainwater ditch (5) close to the sunken green land is higher than the vertical wall of the side of the rainwater ditch (5) far from the sunken green land; the upper opening of the rainwater ditch (5) is covered by a grate plate (6); The pipe body of the permeation pipe (4) is provided with permeation holes, and the drainage end of the permeation pipe (4) penetrates through the vertical wall of one side of the rainwater ditch (5); An overflow port (7) is arranged on the upper part of the vertical wall of the side of the rainwater ditch (5) close to the sunken green land, and the overflow port (7) is higher than the upper surface of the planting soil layer (1); The drainage layer (2) is filled with graded gravel, graded pebbles or ceramsite.
2. The sinking green drainage structure according to claim 1, characterized in that: The overflow port (7) is 50mm-200mm higher than the upper surface of the planting soil layer (1).
3. The sinking green drainage structure according to claim 1, characterized in that: The rainwater ditch (5) is built by bricks or concrete.