Urban community rainwater management system based on low-impact development measures

Abstract

The invention discloses an urban community rainwater management system based on LID (low-impact development) measures. The urban community rainwater management system comprises upstream measures, midstream measures and downstream measures; the upstream measures comprise a green roof measure and a permeable pavement measure; the midstream measures comprise a grassed swale measure; the downstream measures comprise a bioretention facility and a rainwater pipe network measure; and the system further comprises one or more bioretention facilities and rainwater pipe network measures mostly arranged below the community road to be managed. The invention further discloses a planning method of the urban community rainwater management system based on the LID measures.

Description

technical field [0001] The invention relates to rainwater management technology, in particular to an urban community rainwater management system based on low-impact development (LID) measures. Background technique [0002] At present, the rainwater drainage system of most cities in my country is constructed according to the traditional rainwater drainage design method. The traditional urban rainwater drainage design mostly adopts the method of quickly discharging rainwater, which ensures the safety of the urban rainwater drainage system in a short period of time. However, with the improvement of urbanization level, the proportion of urban impervious area increases year by year, and the return period level under the traditional design method can no longer meet the rainwater drainage demand of modern cities. Especially when heavy rainstorms occur, the lack of effective and timely drainage methods for the large amount of rainwater collected in a short period of time is the roo...

AI Technical Summary

Problems solved by technology

In addition, the utilization rate of rainwater, which is lightly polluted and has a large amount of water, is very low. Beijing produces an average of 2 billion cubic meters of rainwater every year, but the utilization rate of rainwater is less than 10%. The loss of rainwater resources is undoubtedly a problem. huge waste

In addition, the rapid erosion and discharge of rainwater on the ground will bring serious non-point source pollution to the regional water environment.

Images