Method for calculating volume of detention facility on basis of rainwater reuse rate

Abstract

The invention relates to a method for calculating the volume of a detention facility on the basis of rainwater reuse rate. The method comprises the following steps of (1) determining a typical year daily rainfall condition of a research area; (2) determining a rainwater reuse rate and a comprehensive runoff coefficient of each area or land parcel; and (3) assuming a volume of a detention tank of aspecific single land parcel or area, putting the typical year daily rainfall value in and calculating the minimum detention tank volume which can meet the requirement of rainwater reuse rate day by day according to a water quantity balance equation; and calculating the minimum detention tank volumes of a plurality of land parcels or areas under the condition of meeting the rainwater reuse rate. The method has the advantages that on the basis of a data target value of the resource utilization rate of the rainwater in the research area, through continuously measuring rainfall data in one year,a reuse rate target value is taken as the minimum constraint boundary, and the volume of the reuse facility is the maximum constraint boundary, so that the minimum volume of the rainwater reuse facility is rapidly calculated in batches. The method can be provided for calculating the volume of the rainwater reuse facility in sponge city construction.

Description

technical field [0001] The invention relates to a method for calculating the volume of regulation and storage facilities based on the rainwater reuse rate, specifically a fast programmed calculation method for determining the minimum required volume of regulation and storage facilities based on the region or block rainwater reuse rate, which belongs to the category of rainwater Calculation of regulation and storage and methods of utilization of rainwater resources in sponge cities. Background technique [0002] Sponge city is a new generation of urban rainwater management concept. It means that the city can be like a sponge, which has good flexibility in adapting to environmental changes and responding to natural disasters. Therefore, rainwater reuse plays an important role in the construction of sponge cities, and it is mainly carried out through the formulation of rainwater reuse rate targets. control. [0003] The reused rainwater is mainly used as municipal water for i...

AI Technical Summary

Problems solved by technology

[0009] The volume calculation of rainwater reuse facilities is mainly in a static calculation stage, that is, the product of the total rainfall and the total area is generally used to multiply the total volume of the entire area by the rainwater reuse rate, but in the implementation stage of the sponge city, it is necessary to To implement the indicators into the plot, the traditional regional scale calculation method will have certain limitations

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