CN215802733U

CN215802733U - Ecological roof drainage system in sponge city

Info

Publication number: CN215802733U
Application number: CN202122016863.6U
Authority: CN
Inventors: 曹世伟; 陈崎; 周佳; 董志慧
Original assignee: Gardening Lanscaping Construction Co ltd
Current assignee: Gardening Lanscaping Construction Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-02-11
Anticipated expiration: 2031-08-25

Abstract

The utility model relates to an ecological roof drainage system for a sponge city, wherein a retaining wall is arranged above a roof, a planting area is formed by enclosing the retaining wall, a water outlet is arranged at one side of the retaining wall with a higher gradient in the planting area, a water passing hole is arranged on the retaining wall close to the water outlet, and the water outlet is communicated with the water passing hole; water through holes are also formed in the retaining wall with the lower gradient of the planting area, and the water through holes in the retaining wall with the lower gradient of the planting area are connected to the drainage ditch through the drainage pipe; laying a drainage plate in the planting area, laying geotextile above the drainage plate, and laying planting soil above the geotextile; and a filter layer is laid on the inner edge of the planting area, laid along the inner side of the retaining wall and laid between the drainage plate and the geotextile. The sponge urban ecological roof drainage system can allow rainwater blocked by a retaining wall of a planting area to pass through, so that rainwater accumulation is avoided; the rainwater can fill the catch basin earlier when planting the zone time, and the escape canal is arranged to the escape canal again after the catch basin is full, and the rainwater obtains make full use of.

Description

Ecological roof drainage system in sponge city

Technical Field

The utility model relates to the field of roof garden drainage, in particular to a sponge urban ecological roof drainage system.

Background

The ecological roof generally refers to greening arrangement on the top of a building and an open area, and the ecological roof is used for decorating the building, beautifying the city, increasing the absorption of carbon dioxide, regulating indoor temperature and the like.

The method is characterized in that a greening area is arranged on a roof, flowers, plants and trees are planted, the load and drainage of a roof garden are convenient, an overhead structure is usually selected to build a pavement layer of a roof surface of a person in a design stage of a building, so that the load problem can be solved, rainwater can flow into drainage ditches reserved on the periphery of a parapet wall in a slope finding direction according to the structure of the building, the drainage design of the roof is relatively simple, and the requirement of roof drainage with a small area can be met; however, for large-area roofs, the size of the paving plates is limited in the overhead structure, the small plates can only be erected by large plates, the small plates need to be supported by more supporters, the manufacturing cost is relatively high, the large plates can only be used by regular plates, and irregular patterns cannot be assembled; and when built on stilts panel butt joint degree of difficulty is big, the problem of laying wrong platform, and later maintenance is comparatively difficult, consequently general selection non-built on stilts structure, adopt the entity to lay and paste the pavement promptly on the roof.

However, when the entity is paved and paved, when the reserved drainage ditch is in the paving range of landscape design and is positioned at a lower elevation, the built flower bed on the slope surface leading to the drainage ditch blocks rainwater from discharging, so that accumulated water is reserved on the roof and cannot be discharged.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a sponge urban ecological roof drainage system, rainwater is led to the inside of a flower bed, and the inside of the flower bed is led to a drainage ditch, so that the normal drainage of the rainwater is ensured.

The technical purpose of the utility model is realized by the following technical scheme:

a retaining wall is arranged above a roof, a planting area is formed in the retaining wall in an enclosing mode, a water outlet is formed in one side of the retaining wall with a higher gradient in the planting area, a water passing hole is formed in the retaining wall close to the water outlet, and the water outlet is communicated with the water passing hole; water through holes are also formed in the retaining wall with the lower gradient of the planting area, and the water through holes in the retaining wall with the lower gradient of the planting area are connected to the drainage ditch through the drainage pipe; laying a drainage plate in the planting area, laying geotextile above the drainage plate, and laying planting soil above the geotextile; and a filter layer is laid on the inner edge of the planting area, laid along the inner side of the retaining wall and laid between the drainage plate and the geotextile.

Furthermore, the retaining wall between the planting areas at adjacent positions is a public retaining wall, water through holes are formed in the public retaining wall, and water filtering layers are laid at two ends of each water through hole of the public retaining wall respectively.

Furthermore, the drainage layer includes a plurality of gravels, and the gravel is piled up the setting, leads to the setting on filtration water layer and avoids the outlet to be blockked up by planting soil, simultaneously with the planting district lifting take the altitude of outlet position, avoids rivers directly to erode planting soil.

Furthermore, a leveling layer is paved above the roof of the planting area, and the drainage plate is paved on the leveling layer.

Furthermore, the water outlet comprises a floor drain and a pipeline, the floor drain is pre-buried outside the planting area, and the floor drain is communicated with the water passing hole through the pipeline.

Further, the floor drain is L type side floor drain.

Furthermore, the drain board includes plate body, a plurality of the recessed catch basin of relative plate body.

Compared with the prior art, the sponge urban ecological roof drainage system can drain rainwater blocked by the retaining wall of the planting area from the planting area, so that rainwater accumulation is avoided; in addition, when the rainwater passes through the planting area, the rainwater can be filled into the water storage tank through the drainage plate, and then is drained to the drainage ditch after the water storage tank is full, so that the rainwater is fully utilized.

Drawings

Fig. 1 is a schematic view of a drain board according to the present invention.

Fig. 2 is a schematic structural view of an L-shaped side floor drain in the utility model.

Fig. 3 is a schematic structural diagram of the sponge city ecological roof drainage system.

Fig. 4 is a partial schematic view of the sponge city ecological roof drainage system of the utility model.

In the figure, 1, a plate body; 2. a water storage tank; 3. an L-shaped body; 4. an L-shaped filter plate; 5. a pipe interface; 6. a pipeline; 7. an upper retaining wall; 8. a lower retaining wall; 9. a protective layer; 10. c25 plain concrete underlayment; 11. a cement mortar bonding layer; 12. a stone surface layer; 13. leveling layer; 14. a drain plate; 15. geotextile; 16. a filter layer; 17. water passing holes; 18. a floor drain; 19. a drain pipe; 20. and (7) a drainage ditch.

Detailed Description

The technical solution of the present invention is further described below with reference to specific embodiments:

a retaining wall is arranged above a roof, the retaining wall comprises an upper retaining wall 7 and a lower retaining wall 8 in the embodiment, the lower retaining wall 8 is made of C30 plain concrete, the upper retaining wall 7 is made of MU10 light building blocks, water through holes 17 are formed in the lower retaining wall 8, and the strength requirement and the load requirement of the roof can be met through combination of two materials. Enclosing the retaining wall to form a planting area, and planting and greening in the planting area; a protective layer 9 is poured on the surface of the roof by C20 fine stone concrete, the roof is divided into a planting area and a boarding area above the roof, the planting area and the retaining wall are located in the planting area, and the boarding area is located outside the planting area. In the people-above region, a C25 plain concrete cushion layer 10, a 1:3 cement mortar bonding layer 11 and a stone surface layer 12 are sequentially paved above the roof from bottom to top. And in the planting area, a retaining wall is arranged above the roof. In the embodiment, a 1:2.5 cement mortar leveling layer 13 is laid above a roof in a planting area, a drainage plate 14 is laid above the leveling layer 13, the drainage plate 14 is an existing product and comprises a plate body 1 and a water storage tank 2 which is concave relative to the plate body 1, when water flows through the drainage plate 14, the water flows into the water storage tank 2 first to fill the water storage tank 2, redundant water flows away along the drainage plate 14, and the drainage plate is as shown in fig. 1.

Fully paving the drainage plate 14 in the retaining wall, and paving 300g/m on the drainage plate 14²And filling soil is laid above the geotextile 15 and used for greening planting. The slope is left on whole roof, set up escape canal 20 in the lower one side of slope, normal rainwater flows to escape canal 20 along the slope, some regions are blocked by the barricade, in order to facilitate the circulation of rainwater, set up water hole 17 on the barricade, cross water hole 17 intercommunication planting district, in the higher one side of slope, set up the outlet, the outlet includes floor drain 18, pipeline 6, floor drain 18 is connected to through water hole 17 through pipeline 6, after the rainwater reachs the barricade position along the slope on roof, from floor drain 18 along pipeline 6 get into through water hole 17 and flow into planting district again, the rainwater flows along drain plate 14 surface, after the rainwater fills up catch basin 2, unnecessary rainwater flows to the barricade of low slope position along drain plate 14, through water hole 17 outflow district on the barricade of this position. And arranging a drain pipe 19 on the side with lower slope outside the planting area, and enabling rainwater drained from the planting area to flow to a drain 20 from the drain pipe 19 to finish drainage.

In order to prevent the planting soil from being washed by the flowing rainwater, a filter layer 16 is laid on the inner side of the retaining wall at a position close to the water through holes 17, wherein the filter layer 16 is made of gravels with the grain diameter of 30-40mm, and the gravels are piled on one side of the retaining wall. Considering that there may be two or more planting areas, two adjacent planting areas share a common retaining wall, and the filtering layer 16 is laid on both sides of the common retaining wall, and the filtering layer 16 is laid between the drainage plate 14 and the geotextile 15. The rainwater passes through the water holes 17, then passes through the filter layer 16, and then flows along the drain board 14.

For the condition that the roof thickness is not suitable for installing the floor drain, the floor drain can be selected to be an L-shaped side floor drain, as shown in figure 2, a cavity is formed inside an L-shaped main body 3 and an L-shaped filter plate 4, the L-shaped filter plate 4 is installed on one side of the L-shaped main body 3, a pipe joint 5 is arranged on the rear side of the L-shaped main body 3, the pipe joint 5 is communicated with the cavity and is connected with a pipeline 6 through the pipe joint 5, the pipeline 6 is horizontally connected to a water through hole 17, the pipeline is prevented from being installed downwards, and the lower space is saved.

The present invention is further explained and not limited by the embodiments, and those skilled in the art can make various modifications as necessary after reading the present specification, but all the embodiments are protected by the patent law within the scope of the claims.

Claims

1. A sponge city ecological roof drainage system is characterized in that a retaining wall is arranged above a roof, a planting area is formed by enclosing the retaining wall, a water outlet is formed in one side of the retaining wall with a higher gradient in the planting area, a water passing hole is formed in the retaining wall close to the water outlet, and the water outlet is communicated with the water passing hole; water passing holes are also formed in the retaining walls with the lower gradient of the planting area, and the water passing holes in the retaining walls with the lower gradient of the planting area are connected to drainage ditches through drainage pipes; a drainage plate is laid in the planting area, geotextile is laid above the drainage plate, and planting soil is laid above the geotextile; the filter layer is laid at the inner edge of the planting area, the filter layer is laid along the inner side of the retaining wall, and the filter layer is laid between the drainage plate and the geotextile.

2. The ecological roof drainage system in sponge city according to claim 1, characterized in that the retaining wall between the planting areas in adjacent positions is a public retaining wall, a water through hole is opened on the public retaining wall, and water filtering layers are respectively laid on two ends of the water through hole of the public retaining wall.

3. The sponge urban ecological roof drainage system according to claim 1, wherein the water filtration layer comprises a plurality of gravels, and the gravels are stacked and arranged.

4. The sponge urban ecological roof drainage system according to claim 1, wherein a leveling layer is laid above the roof of the planting area, and the drainage plate is laid on the leveling layer.

5. The sponge urban ecological roof drainage system according to claim 4, wherein the drainage outlet comprises a floor drain and a pipeline, the floor drain is pre-buried outside the planting area, and the floor drain is communicated to the water through hole through the pipeline.

6. The sponge urban ecological roof drainage system according to claim 5, wherein the floor drain is an L-shaped side drain.

7. The sponge municipal ecological roof drainage system according to claim 1, wherein the drainage plate comprises a plate body and a plurality of water storage grooves recessed relative to the plate body.