ZHONGWei,ZHANGJun-peng.Multi-objective Optimization Design of LID Facility Layout with NSGA-Ⅲ Coupling[J].China Water & Wastewater,2025,41(13):131-136.
NSGA-Ⅲ耦合的LID设施布局多目标优化设计
- Title:
- Multi-objective Optimization Design of LID Facility Layout with NSGA-Ⅲ Coupling
- 关键词:
- 城市内涝; 低影响开发（LID）设施布局; 径流污染控制; 成本控制; NSGA-Ⅲ算法
- Keywords:
- urban flooding; layout of LID facilities; runoff pollution control; cost control; NSGA-Ⅲ algorithm
- 摘要:
- 针对短时突发暴雨对城市造成内涝和水体污染的问题，优化城市低影响开发（LID）设施布局，运用NSGA-Ⅲ算法实现暴雨情景下LID设施布局的径流系数控制、径流污染控制和成本控制多目标优化，将优化的帕累托解集中的最优结果输入SWMM模型中进行模拟。以天津市滨海新区生态城突发暴雨情况为实例进行研究，结果表明，优化后的LID设施布局可使管渠积水深度降低18.6%，径流污染物综合削减率达到41.4%，在总支出成本相同的情况下，优化后的LID设施布局使径流污染物排放量减少了5.82%，可有效解决城市内涝和径流污染问题。
- Abstract:
- This study optimized the layout of urban low impact development (LID) facilities to address the issues of urban waterlogging and water pollution caused by sudden and intense rainfall events. The NSGA-Ⅲ algorithm was employed to achieve multi-objective optimization for runoff coefficient control, runoff pollution control, and cost control of the LID facilities layout under heavy rainfall scenarios. The optimal solution from the Pareto-optimized solution set was then integrated into the SWMM model for simulation. An example-based study was conducted on the occurrence of sudden heavy rainfall in the Sino-Singapore Tianjin Eco-City. The findings indicated that the optimized LID facilitied layout could decrease the pipe channel water depth by 18.6%, with the comprehensive runoff pollutants reduction rate of 41.4%. Under the same total expenditure cost, the optimized LID facilities layout further reduced runoff pollutants emission by 5.82%. This approach can effectively address urban waterlogging and runoff pollution issues.
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