Sponge city construction evaluation method combining full life cycle cost and hydrological effect

Abstract

The invention provides a sponge city construction evaluation method combining full life cycle cost and hydrological effect, and the method comprises the steps: firstly, designing a rainwater management measure and a rainfall scheme of a research area according to a historical rainwater measure and rainstorm flood occurring over the years; secondly, generalizing and dividing an actual rainwater pipe network of the research area to construct an SWMM model, and calibrating and verifying the SWMM model by using actually measured rainfall to obtain a final SWMM model; then, inputting the designed rainfall scheme into the final SWMM model for simulation, and comparing runoff control effects without the rainwater management measures and runoff control effects with the rainwater management measures; and finally, calculating the full life cycle cost under each rainwater management measure, and evaluating and analyzing each rainwater management measure by adopting a cost-benefit quantitative analysis method. The economic effectiveness of the rainwater management measures is evaluated by combining the full life cycle cost and the hydrological effect, and an important decision basis is provided for sponge city construction in future urban areas.

Description

technical field [0001] The invention relates to the technical field of sponge city construction, in particular to an evaluation method for sponge city construction that combines full life cycle costs and hydrological effects. Background technique [0002] The Fifth Assessment Report (AR5) of the Intergovernmental Panel on Climate Change (IPCC) pointed out that as the average surface temperature rises, the frequency and intensity of extreme precipitation in most land areas increase, which in turn makes floods more frequent. Many global risks caused by climate change are concentrated in cities, and flood disasters account for about one-third of natural disasters in both developed and developing countries of the world. China is located in the Asian monsoon region and is one of the countries with the most frequent rainstorms in the world. Studies have shown that in the past half a century, especially since the 1990s, the intensity and frequency of extreme precipitation in China ...

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Problems solved by technology

[0007] In view of the deficiencies in the above-mentioned background technology, the present invention proposes a sponge city construction evaluation method that combines full life cycle costs and hydrological effects, and determines the economic cost of each rainwater management measure (LID) on the basis of comprehensive consideration of cost-effectiveness. Effectiveness, solves the problem of optimization of LID measures in sponge city construction

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