Large storage amount water storing and draining plate for roof greening

A roof greening, storage and drainage technology, applied in the direction of roof drainage, roof, roof covering, etc., can solve the problems of easy blockage of drainage channels, underutilized water, dry and dead plants, etc., so as to improve the survival rate of plants and reduce irrigation. and maintenance costs, the effect of large water storage

Active Publication Date: 2017-05-31
重庆市环境科学研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may cause the water storage capacity to be too small to meet the needs of plants, and the plants will dry up and die; when water is stored, some water storage cups are full and overflow, while some have not yet collected rainwater; when water is used, the water in some water storage cups has dried up, and the water in another part of the water storage cup is not fully used
Moreover, the existing storage and drainage plates usually only include the plate body part stamped by plastic, and the particles are easy to deposit in the water storage cup, further reducing the water storage capacity, and at the same time, it is easy to block the drainage channel

Method used

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  • Large storage amount water storing and draining plate for roof greening
  • Large storage amount water storing and draining plate for roof greening
  • Large storage amount water storing and draining plate for roof greening

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]In this example, the storage and drainage boards are laid flat along the slope of the roof. The side length of the regular hexagon of the storage and drainage plate structure is b=30mm, the lowest height of the drainage channel is h=20mm, and the height of the plate is H=30mm. The drainage channel of the storage and drainage plate is regarded as a cuboid tank with a cross section A=30mm×20mm, and the water flow is regarded as an open channel uniform flow. Wall roughness n 1 =0.012, the roughness of non-woven geotextile n 2 =0.02, its comprehensive roughness where X 1 、X 2 corresponding to the roughness n 1 , n 2 wetted perimeter length. From the velocity formula It is known that the flow rate is inversely proportional to the roughness, and the drainage flow rate of the storage and drainage plate is about 22% slower than that of the ordinary storage and drainage plate, which can play the effect of slow discharge and slow release, stagger the peak of flow product...

Embodiment 2

[0034] In this example, the drainage structure of the storage and drainage plate remains the same as in Example 1, and the other structures are basically the same, except that the height of the plate is increased to H=50mm, and the width of the connecting groove on the slope is c 1 = 20mm, depth d 1 =40mm, the width of the connecting groove on the horizontal side c 2 = 20mm, depth d 2 = 30mm. Its drainage capacity is the same as in Example 1 u =2.56l / s m, its water storage capacity is about V=21.4l / m 2 , has been greatly improved.

[0035] In this example, as Figure 6 As shown, there is a 500mm pebble isolation zone at the drainage outlet within the green area, and the isolation zone and the planting substrate are separated by a partition, and the height of the partition is 50mm higher than the top layer of the substrate. A check box is installed on the drain. The storage and drainage plate passes through the bottom of the partition to extend the drain, and the upper g...

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PUM

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Abstract

The invention relates to a large storage amount water storing and draining plate suitable for roof greening. The large storage amount water storing and draining plate comprises a plastic plate face, honeycomb water storing bottles, communicating grooves, draining holes, supporting columns, non-woven geotextiles and water absorbing belts. The plate face, the water storing bottles, the communicating grooves and the supporting columns are all made of high density polyethylene (HDPE) plastic base plates after stamping. The water storing bottles are arranged on the plate face in a honeycomb mode and connected through the communicating grooves. The water storing space is large, and meanwhile uniform water distributing is achieved. The draining holes are formed in the plate face. The supporting columns are arranged below the plate face. One layer of the non-woven geotextiles is adhered on the plate face and the bottom of the each bottle correspondingly. The water absorbing belts are arranged in the position, of the communicating grooves, of the geotextiles of the plate face and stretch in the bottoms of the bottles in the position of the water storing bottles. The structure is reasonable, forming is convenient, construction is convenient, maintenance is simple, the mechanical property is good, universality is high, system adaptability is strong, and meanwhile the multiple functions of water storing, water draining, filtering, ventilating, heat insulation, noise reduction, root thorns resisting and the like are achieved; and stored rainwater can be utilized to replenish water for a matrix.

Description

technical field [0001] The invention belongs to the field of building greening engineering and relates to a roof greening storage and drainage board. Background technique [0002] With the rapid development of urbanization, impermeable materials cover a vast urban area, resulting in urban heat island effect and urban waterlogging, and the contradiction between green land and urban construction land is increasingly intensified. In order to maximize the accumulation, infiltration and purification of rainwater in urban areas, the state and local governments have successively issued opinions and methods for the construction of "sponge cities" that promote the utilization of rainwater resources and ecological environment protection. The roof greening will transform the impermeable surface that occupies a considerable proportion of the city into a green space. While retaining rainwater, slow drainage and slow release, it will also play a role in energy saving, emission reduction, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04D3/35E04D13/04
CPCE04D3/35E04D13/04
Inventor 雷波李雪飞由永飞杨春华张晟刘朔孺黄茜郑莉
Owner 重庆市环境科学研究院
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