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全球气候变化背景下,城市极端暴雨致涝风险日益加剧,如何在超大特大城市中实现极端暴雨致涝过程的高效精准预测,已成为防灾减灾与提升城市韧性的核心科学问题和工程需求。为解决传统水动力模型计算效率低、实时性差的问题,提出一种融合物理机理模型与人工智能(AI)算法的双驱动高效模拟预测方法。集成产流计算、二维水动力汇流及管网-地表耦合机制,构建高精度雨洪过程数值模型;通过非均匀网格优化和多GPU并行计算融合,实现超大特大城市极端暴雨致涝过程高效高精度模拟;以物理模型生成训练数据驱动AI预测模型的模式,实现超大特大城市极端暴雨致涝过程的快速预测。以陕西省西安市为例,基于融合物理机理与AI算法的双驱动预测模型较传统水动力模型提速约287倍,相对误差低于10%,实现了极端暴雨主城区积水风险分级快速预测。该方法为超大特大城市暴雨内涝快速预警与科学应对提供了高效技术支撑。
Abstract:Under the background of global climate change, the risk of extreme rainfall-induced flooding in cities is increasingly intensifying. How to achieve efficient and accurate prediction of such flooding processes in ultra-large cities has become a core scientific issue and engineering demand for disaster prevention, mitigation, and enhancing urban resilience. To address the problems of low computational efficiency and poor real-time performance of traditional hydrodynamic models, a dual-driven highefficiency simulation and prediction method that integrates physical mechanism models with artificial intelligence(AI) algorithms is proposed. By incorporating runoff generation calculations, twodimensional hydrodynamic routing, and the coupled mechanism of pipe networks and surface flow, a high-precision numerical model of rainfall-flood processes is constructed. Through non-uniform grid optimization and multi-GPU parallel computing, efficient and accurate simulation of extreme rainfallinduced flooding in ultra-large cities is achieved. Using training data generated by the physical model to drive the AI prediction model enables rapid forecasting of flooding processes. Taking Xi'an City in Shaanxi Province as an example, the dual-driven prediction model based on the integration of physical mechanisms and AI algorithms achieves a computational speed about 287 times faster than traditional hydrodynamic models, with relative error below 10%, and realizes rapid classification of waterlogging risks in the main urban area under extreme rainfall. This method provides efficient technical support for rapid early warning and scientific response to urban waterlogging caused by extreme rainfall in ultralarge cities.
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基本信息:
中图分类号:TU992
引用信息:
[1]侯精明,王添,李东来,等.超大特大城市极端暴雨致涝过程高效模拟预测方法研究[J].中国水利,2025,No.1020(18):19-28.
基金信息:
国家重点研发计划项目(2024YFC3012403); 国家自然科学基金项目(52409104)
2025-10-16
2025-10-16
2025-10-16