Rainwater collecting, using and discharging system for collapsible loess region road sponge facilities

Abstract

The invention discloses a rainwater collecting, using and discharging system applied to collapsible loess region road sponge facilities. The rainwater collecting, using and discharging system comprises a green belt, the cross section of the green belt is in an arc concave shape, and the arc concave type green belt is provided with a planting soil layer, a fine particle gradation metaling layer, acoarse grain gradation metaling layer and a sand gravel layer; in the sand gravel layer, a permeable pipe is arranged in the longitudinal direction of the green belt; and the periphery of the permeable pipe is filled with open-graded friction course crushed stones, and the peripheries of the open-graded friction course crushed stones are covered with permeable geotechnical cloth. Water collectingponds are arranged on the longitudinal center line of the green belt every 40m; the water collecting ponds are connected with the permeable pipe in a sealing mode, core walls are arranged on the lowerpart of the water collecting ponds, and grid square filtering plates are mounted at the upper ends of the core walls; and cover plates are arranged at the tops of the water collecting ponds, the cover plates are provided with holes, and when rainwater is large, excess water in the green belt is discharged into the water collecting ponds. A water discharging pipe is arranged at the bottom, close to a rainwater well, of the wall bodies of the water collecting ponds, and thus the rainwater is discharged into a road rainwater dandruff comb or the rainwater well. According to the rainwater collecting, using and discharging system, rainwater can be controlled and used, the construction form is simple, the cost is low, and the construction is easy.

Description

technical field [0001] The invention belongs to the field of sponge city construction, in particular to a rainwater collection, utilization and discharge system for road sponge facilities in collapsible loess areas. Background technique [0002] In recent years, my country has increased the promotion and construction of sponge cities. The purpose is to give full play to the absorption, storage, slow release and filtration and purification of natural rainwater by roads, green spaces, water systems and other facilities through the construction of ecological drainage facilities, so that urban development and construction The post-development hydrological characteristics are close to the natural state before development, thereby effectively alleviating urban waterlogging and heat island effects, reducing urban runoff pollution load, saving water resources, and protecting and improving the urban ecological environment. [0003] The deployment of sponge facilities on roads in colla...

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Problems solved by technology

Up to now, there are no relevant technical measures such as rainwater collection, utilization and f

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