文章摘要
沿海城市复合洪涝模拟物理模型研究
Physical modeling of compound flooding simulation in coastal cities
投稿时间:2024-02-01  修订日期:2024-07-23
DOI:
中文关键词: 沿海城市  物理模型  复合洪涝  数值模拟模型
英文关键词: coastal urban  physical model  compound flooding  numerical simulation model
基金项目:国家自然科学基金(52379019);天津大学水利工程仿真与安全国家重点实验室基金 (HESS-2227)
作者单位邮编
徐奎* 天津大学水利工程智能建设与运维全国重点实验 300350
庄云超 天津大学水利工程智能建设与运维全国重点实验 
马超 天津大学水利工程智能建设与运维全国重点实验 
练继建 天津大学水利工程智能建设与运维全国重点实验 
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中文摘要:
      受暴雨、沿海高潮位和河流洪水等多种洪涝驱动因素的影响,沿海城市洪涝成灾机理复杂。揭示沿海城市复合洪涝的发生过程与成灾机理对于科学制定洪涝调控策略具有重要的意义。本研究探究了沿海城市复合洪涝模拟物理模型构建方法,并以海口市美舍河出海口典型城区为例,构建了复合洪涝模拟物理模型和数值模型。基于物理模型和数值模型开展了暴雨-高潮位-河流洪水三因素驱动下的复合洪涝模拟物理模型试验研究,并对模型精度进行了评估。结果表明,本研究所构建的沿海城市物理模型可以准确模拟复合洪涝,模型率定和验证的纳什效率系数值均大于0.9,相对误差值均小于10%,模型精度较高。
英文摘要:
      The mechanism of coastal urban flooding is complex due to the impact of multiple flood drivers such as heavy rainfall, coastal high tide level and river flooding. Therefore, it is of great significance to effectively reveal the occurrence process of coastal urban compound flooding for the scientific development of flood control strategies. This study investigates the method of constructing a physical model for simulating compound flooding in coastal cities. The compound flood simulation physical model and numerical model were constructed with the typical urban area of Meishe River outlet in Haikou City as an example. Based on the physical and numerical models, an experimental study of physical model for simulating compound flood driven by three factors of heavy rainfall-high tide level-river flooding was carried out, and the accuracy of the model was evaluated. The results show that the physical model constructed in this study can accurately simulate the compound flood, and the Nash efficiency coefficient values of both model calibration and validation are greater than 0.9, and the relative error values are all less than 10%, so the model has high accuracy.
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