CN207647050U - Green roof system - Google Patents

Abstract

The utility model provides a green roof system and relates to the technical field of roof water storage and drainage. Including green roof system and drainage ditches; Drainage pipes are set on the side of the storage and drainage layer close to the return water pipes, and the drainage pipes are connected to the water storage layer; Drip irrigation pipes are set in the matrix layer, and the drip irrigation pipes are connected to the return water pipes; Impurities permeated from the matrix layer with the rainwater, and the storage and drainage layer drains the rainwater to the water storage layer through the drainage pipe; the waterproof and resistance root layer is attached to the roof; On top of alleviating the heat island effect, it is beneficial to increase the oxygen content in the urban atmosphere, reduce air pollution, and improve the living environment. At the same time, the purified rainwater is collected and stored for irrigation of vegetation, realizing the ecological recycling of water.

Description

Green Roof System

technical field

The invention relates to the technical field of roof water storage and drainage, in particular to a green roof system.

Background technique

With the acceleration of urbanization, the area of urban impermeable underlying surfaces (roofs, roads, squares, parking spaces, etc.) continues to expand, resulting in increased surface runoff and faster runoff speed. The rainfall retention capacity in urban areas has been greatly weakened, which has brought huge pressure to the urban drainage system, resulting in frequent floods in major cities in recent years, which have had a serious impact on people's lives, especially in the old cities that mostly use combined drainage systems. It also affects the stability of animal and plant habitats. As an important part of the urban impermeable underlying surface, the roof plays a very important role in the rainfall runoff, and occupies a relatively large area in the city. For example, the proportion of the roof of the commercial area to the total area of the urban impervious underlying surface Up to 40-50%; and because the corrosion products of the roofing material itself are washed away by rainwater, the runoff from the roof contains a large amount of pollutants. Green roofs are a special type of land cover in urban areas. Compared with impermeable underlying surfaces, green roofs have many ecological functions. Many foreign urban storm management concepts regard it as a potential way to alleviate urban rainstorms and control surface sources. effective way to pollute.

Green roof structures usually include water storage and drainage systems, root-resistance systems, filtration systems, growing media, and plants. The main function of green roof is to expand urban green space and green area, reduce urban heat island effect, improve urban ecology and effectively reduce rainwater runoff. The reduction of runoff by green roofs is mainly through the retention and retention of rainwater through the adsorption of rainfall, delaying the time of runoff generation, and reducing the peak flow and total runoff generation. Over time, green roofs will become a popular building product due to their environmental benefits.

Contents of the invention

The object of the present invention is to solve the above problems and provide a green roof system, which is a green roof structure with rainwater retention capacity, and the green roof can improve the ability to store and purify rainwater.

In order to achieve the above object, the technical scheme adopted in the present invention is:

The invention provides a green roof system, which comprises a vegetation layer, a substrate layer, a covering layer, a nutrient substrate layer, an adsorption substrate layer, a filter layer, a drainage layer, a waterproof root layer, a coarse gravel layer, an anti-seepage layer, and a water storage layer. layers, return pipes, drainage pipes, drip irrigation pipes, plastic mesh partitions and submersible pumps; the green roof system includes green roofs and gutters; layer, filter layer, storage and drainage layer, water storage layer and waterproof root layer; the structure of the drainage ditch from top to bottom is a coarse gravel layer, an anti-seepage layer and a water storage layer; between the coarse gravel layer and the anti-seepage layer The backwater pipeline is set between them; the storage and drainage layer is close to the backwater pipeline, and the drainage pipe is connected to the water storage layer; the drip irrigation pipeline is set in the matrix layer, and the drip irrigation pipeline is connected to the return water pipeline; the filter layer filters from the matrix layer With the impurity infiltrated by the rainwater, the storage and drainage layer drains the rainwater to the water storage layer through the drainage pipe; the waterproof and resistance root layer is attached to the roof.

Further, the matrix layer includes a covering layer, a nutrient matrix layer and an adsorption matrix layer belonging to three types of substrates with different bulk densities, and the covering layer is made of crushed stones to prevent fast and excessive evaporation of the material moisture in the nutrient matrix layer from hardening and cracking, preventing The materials in the nutrient matrix layer are washed away by rainwater and have a fixed effect on the vegetation layer; the nutrient matrix layer is made of organic fertilizer, mulch, and garden soil; the adsorption matrix layer is made of vermiculite, perlite, and activated carbon. into, purifying rainwater.

Further, the filter layer is arranged under the matrix layer, the filter layer is made of geotextile or non-woven fabric, the thickness is 5-8mm, the effective width of the lap joint is 10-15cm when laying, and it extends to the side wall of the building To 5~8cm below the surface of the matrix layer, to prevent the matrix layer from being washed by rainwater into the storage and drainage layer and lost.

Further, the storage and drainage layer is a PE polyethylene corrugated drainage board with light weight, high pressure resistance and good air permeability, with a thickness of 40-60mm.

Further, the waterproof root layer adopts HDPE anti-seepage root membrane or APP modified asphalt membrane, with a thickness of 3-4 mm.

Further, a plastic mesh partition is arranged between the anti-seepage layer and the water storage layer, and the materials in the anti-seepage layer are installed on the plastic mesh partition; the plastic mesh partition is made of waste materials.

Further, the material of the anti-seepage layer is set as perlite and activated carbon.

Further, the material of the drip irrigation pipeline is set as a plastic pipeline, and the periphery is wrapped with a geotextile to prevent the pipeline from being blocked; the return water pipeline is connected to the submersible pump; when the vegetation needs to be irrigated, the submersible pump is started, and the purified rainwater Through the action of the submersible pump, it enters the drip irrigation pipeline through the return water pipeline to irrigate the vegetation.

Further, the vegetation layer is selected from sun-tolerant, drought-tolerant, sun-loving perennial herbaceous plants.

Further, the slope of the roof structure is consistent with the slope of the roof.

The beneficial effect of the present invention is that on the one hand, the resources of the roof are fully utilized, so that the utilization rate of the roof is significantly improved; on the other hand, the green roof can absorb rainwater during rainfall, reducing storm runoff, and at the same time alleviating the heat island effect to a certain extent , which is conducive to increasing the oxygen content in the urban atmosphere, absorbing harmful substances, reducing air pollution, improving the living environment, beautifying the urban landscape, and realizing the harmonious coexistence between man and nature. While saving water resources, it realizes the ecological recycling of water.

Description of drawings

The green roof system among the present invention will be further described below in conjunction with accompanying drawing:

Figure 1 is a schematic diagram of a green roof system.

FIG. 2 is a cross-sectional view along line A-A of FIG. 1 .

In the figure: 1 is the vegetation layer; 2 is the matrix layer; 2-1 is the covering layer; 2-2 is the nutrient matrix layer; 2-3 is the adsorption matrix layer; 3 is the filter layer; 4 is the storage and drainage layer; 5 is waterproof 6 is the coarse gravel layer; 7 is the anti-seepage layer; 8 is the water storage layer; 9 is the return pipe; 10 is the drainage pipe; 11 is the drip irrigation pipe; 12 is the plastic mesh partition;

Detailed ways

In order to further illustrate the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, but they should not be construed as limiting the protection scope of the present invention.

Example

As shown in Fig. 1 ~ Fig. 2, the present invention provides a kind of green roof system, described green roof system comprises green roof and drain; Layer 2, filter layer 3, storage and drainage layer 4, water storage layer 8 and waterproof root layer 5; the structure of the drainage ditch is a coarse gravel layer 6, an anti-seepage layer 7 and a water storage layer 8 from top to bottom; A return pipe 9 is arranged between the coarse gravel layer 6 and the anti-seepage layer 7; a drainage pipe 10 is arranged on the side of the storage and drainage layer 4 close to the return pipe 9, and the drainage pipe 10 is connected to the water storage layer 8; Drip irrigation pipeline 11, drip irrigation pipeline 11 is connected with return water pipeline 9; filter layer 3 filters impurities permeated from matrix layer 2 with rainwater, storage and drainage layer 4 drains rainwater to water storage layer 8 through drainage pipe 10; waterproof root Layer 5 is attached to the roof; the substrate layer 2 includes a covering layer 2-1, a nutritional substrate layer 2-2 and an adsorption substrate layer 2-3 belonging to three substrates with different bulk densities, and the covering layer 2-1 is made of gravel , prevent the material moisture in the nutrient matrix layer 2-2 from fast and excessive evaporation and harden and crack, prevent the material in the nutrient matrix layer 2-2 from being washed away by rainwater, and fix the vegetation layer 1; the nutrient matrix layer 2- 2 is prepared from organic fertilizer, mulch, and pastoral soil; the adsorption matrix layer 2-3 is prepared from vermiculite, perlite, and activated carbon to purify rainwater; the filter layer 3 is arranged under the matrix layer 2 to filter Layer 3 is made of geotextile or non-woven fabric with a thickness of 5~8mm. The effective width of the lap joint is 10~15cm when laying, and it extends to the side wall of the building to 5~8cm below the surface of the substrate layer 2 to prevent the substrate layer from 2 is washed into the storage and drainage layer 4 by rainwater and lost; the storage and drainage layer 4 is a PE polyethylene corrugated drainage board with light weight, high pressure resistance and good air permeability, with a thickness of 40-60 mm; Layer 5 adopts HDPE anti-seepage root membrane or APP modified asphalt coil, with a thickness of 3-4mm; the anti-seepage layer 7 and the water storage layer 8 are provided with plastic mesh separators 12, and the anti-seepage layer 7 The material is installed on the plastic mesh partition 12; the plastic mesh partition 12 is made of waste materials; the material of the anti-seepage layer 7 is set to perlite and activated carbon; the material of the drip irrigation pipeline 11 is set to a plastic pipe, The periphery is wrapped with geotextiles to prevent the pipeline from being blocked; the return pipe 9 is connected to the submersible pump 13; Enter the drip irrigation pipeline 11 to irrigate the vegetation; the vegetation layer 1 selects the perennial herbaceous plants that are sun-resistant, drought-tolerant, and sun-loving; the slope of the roof structure is consistent with the slope of the roof.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (9)

1. a kind of green roof system, including vegetable layer（1）, hypothallus（2）, coating（2-1）, nutrient matrix layer（2-2）, inhale Attached hypothallus（2-3）, filter layer (3), water-storage-drainage layer (4), waterproof stopping area (5), cobble rock layers (6), impervious barrier (7), water storage Layer (8), water return pipeline (9), drainpipe (10), droping irrigating pipe (11), plastic wire partition board（12）With immersible pump (13)；Its feature exists In：The green roof system includes Green Roof and gutter；The Green Roof structure is set gradually from top to bottom For vegetable layer（1）, hypothallus（2）, filter layer (3), water-storage-drainage layer (4), reservoir bed（8）With waterproof stopping area (5)；The row Ditch structure is followed successively by cobble rock layers (6), impervious barrier (7) and reservoir bed (8) from top to bottom；Cobble rock layers (6) and impervious barrier (7) Between setting water return pipeline (9)；Water-storage-drainage layer (4) is close to water return pipeline（9）Drainpipe (10), drainpipe (10) is arranged in side It is connected with reservoir bed (8)；Setting droping irrigating pipe (11), droping irrigating pipe (11) are connected with water return pipeline (9) in hypothallus (2) It connects；Filter layer (3) filters the impurity that gets off from hypothallus (2) with rain penetration, and water-storage-drainage layer (4) is by drainpipe (10) by rain Water is discharged to reservoir bed (8)；Waterproof stopping area (5) fits with roof.

2. a kind of green roof system according to claim 1, it is characterised in that：The hypothallus (2) includes covering Layer（2-1）, nutrient matrix layer（2-2）With adsorbing base layer（2-3）Belong to the matrix of three kinds of different unit weights, coating (2-1) is adopted Use rubble.

3. a kind of green roof system according to claim 1, it is characterised in that：The filter layer（3）It is arranged in base Matter layer（2）Under, it is 5 ~ 8mm that filter layer (3), which uses geotextiles or non-woven fabrics, thickness, when laying the effective width of overlapping the slot be 10 ~ 15cm, and extend to hypothallus to building side wall（2）Below surface layer at 5 ~ 8cm.

4. a kind of green roof system according to claim 1, it is characterised in that：The water-storage-drainage layer (4) is poly- for PE Ethylene waveform drain bar, thickness are 40 ~ 60mm.

5. a kind of green roof system according to claim 1, it is characterised in that：The waterproof stopping area (5) uses HDPE antiseepages root separation film or APP modified bituminous pitch coiled materials, thickness are 3 ~ 4mm.

6. a kind of green roof system according to claim 1, it is characterised in that：The impervious barrier（7）With reservoir bed (8) plastic wire partition board is provided between（12）, impervious barrier（7）In material be mounted on plastic wire partition board（12）On；Plastic wire every Plate（12）It is made using waste and scrap.

7. a kind of green roof system according to claim 1, it is characterised in that：Described droping irrigating pipe (11) material is set It is set to plastic conduit, periphery is enclosed with geotextiles；Water return pipeline (9) is connected with immersible pump (13)；It is irrigated when vegetation needs When, start immersible pump (13), is acted on by immersible pump (13) by purified rainwater, pass through water return pipeline（9）It enters Droping irrigating pipe (11) irrigates vegetation.

8. a kind of green roof system according to claim 1, it is characterised in that：The vegetable layer（1）It selects for many years Raw herbaceous plant.

9. a kind of green roof system according to claim 1, it is characterised in that：The gradient of the roof structure and institute The gradient on roof is consistent.