Ground rainwater diversion system for sponge city construction and application method

Abstract

The invention discloses a ground rainwater diversion system for sponge city construction and an application method. The system comprises a flow guide device and an underground storage release layer, wherein the flow guide device is directly and vertically connected with the underground storage release layer in an up-down mode, the flow guide device comprises a vertical hollow flow guide pipe, a face cover is arranged above the flow guide pipe, the face cover is a water inlet of the flow guide pipe, a sewage interception filter material is further arranged at the joint of the flow guide pipe and the face cover, a bottom plate is arranged below the flow guide pipe, the bottom plate is used as a water outlet of the flow guide pipe, and at least one filtering layer is arranged in the verticalhollow space of the flow guide pipe. The system can achieve natural collection and utilization of rainwater in the sponge city construction, the engineering quantity is small, the construction is flexible, the system is not limited by terrain and original design, in-situ absorption and in-situ replenishment are achieved, external force is not needed, the daily life of community residents is influenced minimally during construction, the service life is long, the maintenance frequency is low, the maintenance cost is low, secondary pollution and other incident environmental influences are avoided, and the urban water logging and rainwater loss are effectively relieved.

Description

technical field [0001] The invention belongs to the technical field of urban rainwater treatment, and in particular relates to an improvement in the structure of a ground rainwater diversion device used in the construction of a sponge city. Background technique [0002] Worldwide, water resources are scarce, floods occur frequently, and the problem of water environment deterioration is intensifying. With the rapid development and construction of Chinese cities today, the original vegetation and soil are replaced by impermeable ground, which destroys the original natural water cycle, resulting in the loss of a large amount of rainwater (the largest freshwater resource), and the groundwater’s replenishment from rainfall decreases year by year. Groundwater is depleted. The advancement of urbanization has resulted in hardening of the ground, which also reduces the water content of the soil, reduces evaporation, dries the air, intensifies the heat island effect, and degrades the...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a ground rainwater diversion system and application method used in the construction of sponge cities. The system can solve the problem of natural collection and utilization of rainwater in the construction of sponge cities. Compatible with the original design restrictions, local absorption, local replenishment, no external force, minimal impact on the daily life of residents in the community during construction, long service life, low maintenance frequency, low maintenance cost, no secondary pollution and other incidental incidents Environmental impacts (such as secondary pollution of collected rainwater, breeding of mosquitoes on open water surfaces, etc.) can effectively alleviate the problems of urban waterlogging and rainwater (fresh water) loss

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