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复合洪涝模拟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。
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 and mechanism 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.
作者
徐奎
庄云超
马超
练继建
XU Kui;ZHUANG Yunchao;MA Chao;LIAN Jijian(State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation,Tianjin University,Tianjin 300350,China;School of Civil Engineering,Tianjin University,Tianjin 300350,China)
出处
《水利学报》
EI
CSCD
北大核心
2024年第11期1309-1318,1332,共11页
Journal of Hydraulic Engineering
基金
国家自然科学基金项目(52379019)
天津大学水利工程仿真与安全国家重点实验室基金项目(HESS-2227)。
关键词
沿海城市
物理模型
复合洪涝
数值模拟模型
coastal urban
physical model
compound flooding
numerical simulation model
