Calculation method of performance evaluation index of sponge city based on measured value

Abstract

The invention discloses a method for calculating the performance evaluation index of sponge city based on the measured value of the plot. Firstly, the site vertical arrangement, the sponge facility arrangement and the rainwater control flow field inspection are carried out, and the concentration of the total suspended solids of the initial and later rainwater runoff and the actual soil permeability parameters are obtained through the on-site monitoring and the actual data collection. Rezoning catchment zones; the topological structure model between catchment area, sponge facility and drainagenode is established, and the effective catchment area, ineffective catchment area, permeability ratio, initial runoff total suspended solids concentration, later runoff total suspended solids concentration and soil permeability parameters are substituted into the rainfall-flood model software. The operation model obtains the annual runoff control quantity and the facility annual total suspended matter removal rate, and then calculates the annual runoff total amount control rate and the annual total suspended matter removal rate. The invention can ensure the accurate evaluation of the performance evaluation index of the land sponge city, and is beneficial to the improvement of the land sponge city.

Description

technical field [0001] The invention relates to the technical field of sponge city construction, in particular to a method for calculating the performance evaluation index of a sponge city on a plot based on measured values. Background technique [0002] In recent years, people have paid more and more attention to the coordination relationship between urban construction and ecological environment in the process of social development, and it is particularly important to maintain the sustainable development of social construction. Sponge city construction is a low-impact development model, which is conducive to protecting the natural ecological pattern, maintaining the authenticity of the ecological background's infiltration, stagnation, evaporation (teng), runoff and other hydrological characteristics, and protecting and restoring the natural accumulation of rainfall and runoff. Natural infiltration and natural purification can improve the natural restoration ability of the w...

AI Technical Summary

Problems solved by technology

[0003] At present, my country's sponge city construction is still in the stage of planning, design and construction. There are no clear standards and methods as a basis for judging whether the actual construction can be completed according to the planning and design, and whether the construction effect can meet the design goals, especially for project plots. It is difficult to quantitatively evaluate the construction situation, implementation effectiveness and overall sponge effect of sponge city, and there is a lack of research and discussion on relevant theoretical methods

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