Sponge facility space layout optimization method for urban community rainfall flood regulation and storage

By constructing a storage and regulation objective function and a multi-objective optimization model, the spatial layout of sponge city facilities is optimized, which solves the problem of lack of quantitative target identification and systematic layout in sponge city construction. It realizes the quantitative design and whole-process optimization of facility layout, and improves storage and regulation efficiency and spatial adaptability.

CN120974577APending Publication Date: 2025-11-18GUANGXI UNIV
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Patent Information

Application Number
CN202510987352.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-17
Publication Date
2025-11-18

AI Technical Summary

Technical Problem

The existing sponge city construction lacks a quantitative storage target identification mechanism for future design, the facility layout fails to systematically consider the heterogeneity of urban space and the integrity of the ecological pattern, and the evaluation method is limited to the comparison of single-objective effects after completion, lacking whole-process optimization design and cost-benefit collaborative analysis.

Method used

By comprehensively identifying stormwater storage targets, evaluating facility suitability, calculating storage capacity per unit area, and solving for the layout area, a storage objective function is constructed. Spatial priority grid random sampling is introduced to generate an initial layout. The NSGA-II algorithm is used to optimize the facility configuration structure, and the TOPSIS method is used to select the optimal solution, thus realizing a systematic and quantitative design of sponge city facilities from target identification to layout optimization.

Benefits of technology

It has improved the storage efficiency and spatial adaptability of sponge facilities, solved the problems of difficulty in achieving the total stormwater control rate and lack of quantitative guidance for facility deployment in the construction of sponge cities, and has good replicability and scalability.

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Abstract

A sponge facility spatial layout optimization method for urban community rainfall flood regulation and storage comprises the steps that firstly, multi-source data of a research area is collected, sub catchment subareas are divided, hydrological parameters are extracted, the current annual rainstorm runoff process is simulated through an SWMM model, and the regulation and storage requirements of all the sub catchment subareas are calculated; 2, two-dimensional hydrodynamic simulation is carried out through an SWMM coupling LISFLOOD-FP model, and a ponding depth distribution diagram is obtained. And 3, based on the multi-source data and the ponding depth distribution map, combining sponge facility layout conditions, constructing a suitability evaluation system, generating a comprehensive suitability score map, and dividing priority areas. And 4, constructing a regulation and storage target equation according to the regulation and storage demand and the suitability score map, solving a facility area combination meeting the regulation and storage demand, and screening out a minimum cost scheme. And 5, performing multi-objective optimization on the facility layout in combination with the ponding depth distribution diagram and the priority region, and screening out an optimal layout scheme. According to the method, the optimal facility layout is provided for each sub catchment area, and the regulation and storage efficiency and the space adaptability of sponge facilities are effectively improved.
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