Low-impact development facility optimization configuration method based on sponge city construction

Abstract

The invention discloses a low-impact development facility optimization configuration method based on sponge city construction. The method comprises steps that the return period, a runoff coefficient and the LID facility area proportion are selected, and the current situation, traditional development and the LID situation are respectively simulated to acquire the corresponding runoff coefficient and the flood peak flow; the LID facility area proportion, the runoff coefficient and the return period are sequentially changed, previous steps are repeated to acquire a series of data in different modes, and the annual runoff total control rate and the peak flow closeness are calculated; according to relevant parameters of a sponge city construction index, the LID area proportion is determined; the LID facility area proportion with the peak flow closeness closest to 1 is the best proportion. The method is advantaged in that optimal configuration for low-impact development facility is realized,in the sponge city construction process, the optimal low-impact development facility combination based on land conditions and index requirements is rapidly selected, the amount of labor for multipletrials is reduced, efficiency is improved, and enforcement and popularization of low-impact development construction are promoted.

Description

technical field [0001] The invention relates to a method for optimal configuration of low-impact development facilities based on sponge city construction, and belongs to the field of rainwater engineering planning and design. Background technique [0002] The problem of urban waterlogging is the current focus and focus of the industry. Low Impact Development (LID) is an important facility and means to solve and alleviate urban waterlogging, and it is also an important part of sponge city construction. At present, although there have been qualitative simulation studies on the operation of low-impact development facilities, there is no related research on the optimal allocation method of low-impact development facilities. Most of the simulation results based on stormwater models are relatively random, which is not enough to guide low-impact development facilities. The design, implementation and vigorous promotion of sponge city construction. [0003] The "Technical Guideline...

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Problems solved by technology

[0004] In order to overcome the problem that the low-impact facility planning method in the prior art has too much workload, takes a long time, has low efficiency, and does not consider the influence of the parameters of the LID facility itself on its operation effect, the present invention provides a sponge city based The optimal allocation method of low-impact development facilities constructed by the construction can quickly select the optimal facilities among a large number of low-impact development facilities, which can greatly reduce the workload and improve efficiency; it is more effective for the planning, design and implementation of highly repetitive projects. can promote the application and promotion of low-impact development facilities, and accelerate the pace of sponge city construction

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