Low-impact development multi-objective interval optimal configuration method based on SWMM model

Abstract

The invention discloses a low-impact development multi-objective interval optimal configuration method based on an SWMM model, and the method comprises the steps: building a current situation model ofan urban research region based on the SWMM model, and carrying out the current situation simulation and elastic analysis of a drainage pipe network system in the urban research region; establishing amulti-objective optimization system, and determining an optimization variable and an objective function of the optimization system; and enabling the objective function to take the minimum LID facility cost and the minimum drainage pipe network system elastic index as optimization objectives, and optimizing by combining a multi-objective interval optimization algorithm. A formula for calculating the elasticity index U-Res of the drainage pipe network system is provided to comprehensively evaluate the elasticity of the drainage pipe network system, and water quantity and water environment indexes are comprehensively considered; the minimum LID facility cost and the minimum pipe network system elasticity index U-Res are used as optimization objectives for solving by adopting an intelligent algorithm; the optimization model taking the runoff reduction rate as the constraint condition effectively overcomes the subjectivity of the traditional weight method and reduces the artificial noise influence.

Description

technical field [0001] This application relates to the field of elastic evaluation of pipe network system and optimal configuration of sponge city low-impact development facilities, and specifically relates to a multi-objective interval optimal configuration method for low-impact development based on SWMM model. Background technique [0002] In the context of global climate change and urbanization, urban waterlogging occurs frequently due to dramatic changes in urban land use and vegetation cover. An effective measure to prevent urban waterlogging is low-impact development (LID). Through permeable pavement, green roofs, grass ditch, bio-retention ponds and other measures to control the adverse effects of heavy rain, so that urban areas can achieve a natural hydrological cycle, effectively Alleviate urban waterlogging, reduce urban runoff, and save water resources. The urban drainage pipe network system is one of the important infrastructures for the construction and develop...

AI Technical Summary

Problems solved by technology

However, these models do not take into account the urban drainage system, and it is difficult to reflect the uncertain characteristics of the facility itself and many socio-economic factors

This may cause certain deviations in decision-making, affecting its objectivity and accuracy

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