Urban permeable road water retention and drainage construction method and system

Abstract

The invention provides an urban permeable road water retention and drainage construction method. The construction method comprises the following steps of S1, performing surveying and paying off; S2, paving an impermeable base layer on a roadbed, arranging slopes towards two sides from the center of the impermeable base layer, excavating blind ditches in two sides of the impermeable base layer, andmounting water permeable concrete plates between the impermeable base layer and the blind ditches; S3, laying a water-retaining sponge body module prefabricated from peat ash, diatomite and wood fiber water pervious concrete on the impermeable base layer to form a water absorption surface layer, and finally laying a water pervious surface layer on the water absorption surface layer; S4, excavating a plurality of water collecting wells in the blind ditches, and installing water permeable pipes on the blind ditches to connect the water collecting wells; S5, laying a gravel layer, a broken stonelayer and a soil layer sequentially on each water permeable pipe from bottom to top, and planting vegetation on the soil layer. The invention further provides an urban permeable road water retentionand drainage system. Compared with the prior art, road drainage and water retention can be achieved, meanwhile, the drainage capacity is improved, and road water accumulation is avoided.

Description

technical field [0001] The invention relates to the technical field of permeable roads, in particular to a water conservation and drainage construction method and system for urban permeable roads. Background technique [0002] The pavement of traditional urban roads is generally composed of impermeable materials such as asphalt mixture or cement concrete, and the pavement drainage is realized through the cross slope of the road crown. However, in rainy days, the rainwater within the range of the road surface cannot be drained horizontally outside the range of the road surface in time, resulting in accumulated water on the road surface; resulting in a serious decrease in the skid resistance of the road surface, and the vehicle is prone to drift, affecting driving safety and easily causing traffic accidents. In addition, the paving of impermeable pavement changes the original hydrological and ecological environment of the city, increases the pressure on the urban drainage syst...

AI Technical Summary

Problems solved by technology

However, the permeable pavement cannot store enough water for long-term evaporative cooling, which has no mitigation effect on the city's "heat island effect"; when encountering heavy rain, the drainage capacity of the permeable pavement is insufficient, and the pavement will still form water, which will affect driving safety.

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