Construction method for hierarchical sponge road greening

Abstract

The invention relates to the technical field of urban road greening construction, in particular to a construction method of hierarchical sponge road greening. The construction method comprises the following steps of firstly, road surface planning; secondly, construction of lateral dividing strips and a central dividing strip; thirdly, allocation of plants; fourthly, greening design of the centraldividing strip; fifthly, greening design of the lateral dividing strips; sixthly, greening design of a sidewalk, wherein in the first step, the cross section of the road surface is divided into four sections. By means of the construction method, the aims of reducing surface gathered water and relieving the flood peak pressure of a drainage system are effectively achieved, the destruction and influence brought by urban flood waterlogging and other disasters are effectively reduced, and the functions of purifying an urban water source, reducing water pollution, supplementing underground water and the like are exerted; the practicability of water resources in China is greatly improved, fewer water resources are consumed and wasted, natural ecological environments in China are protected, and road rainwater is scientifically and reasonably controlled.

Description

technical field [0001] The invention relates to the technical field of urban road greening construction, in particular to a construction method for sponge-level road greening. Background technique [0002] With the development of urban construction and the expansion of urban scale, a large amount of hardened ground weakens the penetration of rainwater. When the rainfall in the rainy season is large, it is easy to form flood peaks, resulting in water accumulation in some areas of the city; resulting in urban heat island effect, greenhouse effect, and extreme weather conditions. and increased extreme hydrological conditions. [0003] Urban roads are an important part of urban space and play an important role in urban construction. In the process of accelerating urbanization, the area of ​​roads continues to increase, and the area of ​​road hardening land accounts for about 15-20% of the urban construction land area. The amount of rainwater collected in the road subgrade area ...

AI Technical Summary

Problems solved by technology

The amount of rainwater collected in the road subgrade area is very considerable, but these resources cannot be effectively used at present. If we can study new pavement materials and rainwater based on the existing research on the direct and indirect use of rainwater and according to the characteristics of water use in green belts Ground infiltration storage and utilization methods, collecting road runoff nearby as a supplementary water source for groundwater and roadside green belts are of great significance to promoting low-impact development and construction

[0004] At present, in the process of urban road construction, in order to meet the function of urban roads, the idea of ​​rainwater control and utilization mainly reflects "drainage", ignoring the impact on ecological protection and the environment, and the main defects are: 1. Road rainwater Directly entering the river through the municipal drainage pipe network, the road green space cannot effectively store rainwater, and cannot replenish groundwater; 2. The green belt cannot effectively store rainwater. Due to regular watering and greening, road water consumption is large, and a large amount of tap water is consumed every year. , exacerbated the serious shortage of water resources in our country; 3. The surface runoff increased significantly during the rainy season, causing flood disasters; 4. The surface water drainage was not smooth during the rainy season, the road area was seriously flooded, and the surface was slippery, causing traffic accidents

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