Green roof for regulating and controlling aiming at storm rainfall on waterproof roof in city

A green, rainstorm technology, used in building roofs, roof decoration, roof coverings, etc., can solve the problems of rising construction costs, increased construction costs of water-retaining agents or water-retaining resins, nutrient salt precipitation, etc., to reduce load-bearing loads and reduce pollution. Retention capacity of matter, the effect of low packing density

Inactive Publication Date: 2012-03-21
CHONGQING UNIV
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AI Technical Summary

Problems solved by technology

[0006] Planting layer optimization is often prepared by adding organic matter, compost fertilizer or nutrient soil. This combination method inevitably faces the defect of nutrient salt precipitation due to leaching
[0007] (2) The use of water-retaining agent or water-retaining resin increases the const

Method used

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  • Green roof for regulating and controlling aiming at storm rainfall on waterproof roof in city
  • Green roof for regulating and controlling aiming at storm rainfall on waterproof roof in city

Examples

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[0027] See figure 1 When implementing the present invention, the waterproof layer 5, the drainage layer 4, the filter layer 3, the planting layer 2 and the vegetation layer 1 are arranged in order from bottom to top. First, clean up the original roof. After mixing the cement mortar and waterproofing agent, apply it to the roof for waterproofing, and make a slope of 2% to prevent rainwater from accumulating on the roof; after the waterproof layer is completed, remove the particles Spread waste bricks, tiles, ceramsite or slag with a certain mechanical strength on the waterproof layer with a diameter of 30mm and a light-weight filler. The thickness is 50mm, and the drain pipe 6 is connected; then a filter layer is installed, and the sponge is laid first. Spread the geotextile on the sponge to prevent the planting layer particles from clogging the sponge. The thickness of the filter layer is 40mm; spread the pre-mixed planting layer media on the geotextile. The volume ratio of eac...

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Abstract

The invention discloses a green roof for regulating and controlling aiming at the defects of high radial flow and pollution load yield of a hard roof in a city during rainy days. The green roof consists of a vegetable layer, a plant layer, a filter layer, a drain layer and a waterproof layer, wherein the vegetable layer comprises plants with strong capability of resisting drought stress and controlling nitrogen and phosphorus and is extensively managed; the planting layer is formed by mixing fly ash, porcelain granules and sandy loam or loamy sand; the filter layer comprises geotextile and waste sponge; and the drain layer consists of light filler. The green roof has the following advantages that the planted plants have strong survivability and are simply managed; nutrient substances in the planting layer have low background content, so that the phenomenon that nutrient salts are separate out caused by a leaching action during rainy days is avoided; the filter layer not only has a favorable capability of intercepting the granules, but also has stronger capabilities of absorbing and storing water; the drain layer consists of a waste rod brick and tile sheet, porcelain granules or slag with a certain mechanical strength; the green roof has small density; and in addition, the water quality of a radial flow of the green roof is further ensured by using an adsorption performance of the green roof.

Description

technical field [0001] The invention belongs to the technical fields of urban environment planning, environmental protection and green building, and specifically relates to the green roof technology. Background technique [0002] The ever-increasing pace of urbanization has rapidly changed the original land use mode, and the urban impermeable underlying surface has increased rapidly, which has brought great challenges to urban stormwater management. On the one hand, urban non-point source pollution caused by rainstorm erosion has become one of the important pollution sources of urban water environment; on the other hand, the low storm runoff interception rate of impermeable underlying surfaces has brought huge pressure on urban flood control. Urban building roofs account for about 40%-50% of urban impermeable underlying surfaces. Controlling the rainy day runoff and pollution of urban building roofs is of great significance to urban stormwater management. Green roof is an e...

Claims

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Application Information

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IPC IPC(8): E04D11/02
CPCY02A30/254Y02B80/32
Inventor 何强王书敏柴宏祥王振涛潘伟亮
Owner CHONGQING UNIV
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