Sponge city rainfall flood diversion and drainage system

Abstract

The invention provides a sponge city rainfall flood diversion and drainage system. The system comprises greening land, water wells and water seepage net pipes, wherein the greening land comprises a planting soil layer, geotechnical cloth, a stone grain layer, a fine sand layer and a foundation body, the fine sand layer is laid at the top of the foundation body, the stone grain layer is laid at thetop of the fine sand layer, the geotechnical cloth is laid at the top of the stone grain layer, the planting soil layer covers the top face of the geotechnical cloth, the water wells are symmetrically formed in the greening land, and the tops of the water wells protrude out of the top surface of the greening land. According to the sponge city rainfall flood diversion and drainage system, rainwater is permeated, guided and drained into the water wells to be stored through uniform distribution of the water seepage net pipes, the water seepage efficiency and the water seepage amount are effectively improved, waste caused by too deep and too wide permeation of the rainwater is avoided, water is kept uniform, meanwhile, the water seepage net pipes are selectively blocked through the arrangement of drainage controllers, excessive loss of bottom layer water in arid weather is effectively avoided, and refined control over the water is achieved.

Description

technical field [0001] The invention relates to the technical field of urban water conservancy, in particular to a rainwater drainage system for a sponge city. Background technique [0002] It means that a city, like a sponge, has good "elasticity" in adapting to environmental changes and responding to natural disasters. When it rains, it absorbs, stores, infiltrates, and purifies water, and "releases" the stored water and uses it when needed. , Gradually improve and restore the city's natural ecological balance. In the process of sponge city construction, people and natural ecology should be given priority, so it is defined as ecological sponge city. [0003] The drainage method of the sponge city is mainly aimed at the rapid discharge of rainwater and avoiding the accumulation of rainwater. However, the amount of rainwater discharge is large, and the control of water is not detailed enough, which leads to the occurrence of water shortages in dry days, which does not refle...

AI Technical Summary

Problems solved by technology

[0003] The drainage method of the sponge city is mainly aimed at the rapid discharge of rainwater and avoiding the accumulation of rainwater. However, the amount of rainwater discharge is large, and the control of water is not detailed enough, which leads to the occurrence of water shortages in dry days, which does not reflect the sponge city. At the same time, the current drainage facilities occupy a certain green area, which has a certain impact on the urban green ring

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