灰色和绿色基础设施的升级优化组合:在弹性需求和投资限制下,协同决策工具
Bingyi Zhou1, Jiaxun Yang1, Huidong Yang2
1School of Environment, Tsinghua University, Beijing, 100084, China.
Environmental research
|March 16, 2026
概括
城市弹性规划对于缓解气候变化造成的城市洪水至关重要. 这项研究提供了一个优化绿色和灰色基础设施的框架,以节省水压城市的洪水风险.
科学领域:
- 环境工程 环境工程
- 城市规划 城市规划
- 气候适应 气候适应
背景情况:
- 城市化和气候变化显著增加了城市洪水风险.
- 现有的排水系统往往被证明不足以应对极端降雨事件.
- 适应性强的城市排水基础设施对于减轻洪水影响至关重要.
研究的目的:
- 开发和验证一个综合性防洪规划框架.
- 优化城市洪水控制灰色和绿色基础设施的性能.
- 确定成本有效的解决方案,以提高水压城市的城市抗洪能力.
主要方法:
- 灰色基础设施优化和性能评估.
- 绿色基础设施的多目标优化使用非主导排序基因算法II (NSGA-II).
- 将NSGA-II与风暴水管理模型 (SWMM) 集成,以模拟绿色基础设施场景.
主要成果:
- 15.49%的现有管道不足以应对一年的回归期降雨事件.
- 拟议的灰色基础设施部分解决了洪水问题,但缺乏全面的下水控制.
- 优化的绿色基础设施 (情景S2) 显著降低了洪水危险区域 (低:67.8%,中:93.6%,高:100%) 和建筑成本 (10.34%).
结论:
- 开发的框架提供了一种经过验证的方法,用于成本效益高的防洪规划.
- 优化绿色基础设施为减少洪水风险带来了巨大的好处.
- 灰色和绿色基础设施的综合规划对于提高水压环境中的城市洪水弹性至关重要.
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