Method for constructing major drainage system by utilizing SWMM

Abstract

The invention discloses a method for constructing a major drainage system by utilizing an SWMM, and aims to assist in solving the problem of urban waterlogging at present. The method comprises the steps of 1, selecting a simulated region, and determining a surface runoff flood discharge channel; 2, performing hydrological analysis of a water catchment region, performing general survey on pipelinedata and existing design and construction drawings according to a current situation, and performing generalization on the simulated region in the SWMM; 3, setting basic parameters of the SWMM; 4, setting rainwater inspection well node parameters and rainwater pipeline parameters; 5, setting basic parameters of the surface flood discharge channel; 6, performing parameter optimization adjustment ofthe surface flood discharge channel; 7, running the SWMM, and viewing whether waterlogging occurs in a peripheral region of an easy waterlogging point in the simulated region in an SWMM output reportor not; and 8, if the waterlogging is formed in the periphery of the easy waterlogging point in the SWMM output report, returning to the step 6, continuing to perform simulation, and ending the simulation until a model output result shows that the waterlogging in the periphery of the easy waterlogging point is relieved or eliminated.

Description

technical field [0001] The invention belongs to the technical field of urban waterlogging control, and in particular relates to an application of constructing a large drainage system including roads based on a SWMM model. Background technique [0002] Urban waterlogging has plagued cities, especially megacities, in recent years. In my country's planning and design concept, the storm runoff that exceeds the drainage capacity of the rainwater pipe network can be temporarily stored in low-lying places on the surface, and then discharged after the rainstorm or when the pipe network has sufficient drainage capacity, so the problem of water accumulation in urban areas will definitely occur. The traditional pipeline system generally only solves the storm runoff with a small return period. To solve the problem of waterlogging during high-return rainstorms, solve the problem of outlets for rainwater that exceeds the design standards of pipes and canals, and avoid the problem of water...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the serious problem of waterlogging in existing cities, the technical problem to be solved by the present invention is to provide a method for constructing a large drainage system using the SWMM model, which can use roads and rainwater pipes as a double drainage system to simulate the surrounding areas of waterlogging points under heavy rain Regional water accumulation, provide guidance for improving drainage channels, and reduce or avoid urban waterlogging

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