摘要
在气候变化与城市化的双重影响下,我国沿海城市面临日益严峻的洪涝形势.本文以沿海城市福州市中心城区白马河片区为例,基于InfoWorks ICM建立水文水动力耦合模型,并采用2021年2月10日实测降雨及检查井液位数据对模型参数进行了校验.利用了重现期分别为10、20、50和100 a这4种工况作为降雨驱动模型,其结果表明:在10 a一遇设计降雨时,模型在10:12时达到最大水深0.402 m;在20 a一遇设计降雨时,模型在10:07时达到最大水深0.419 m;在50 a一遇设计降雨时,模型在10:02时达到最大水深0.438 m;在100 a一遇设计降雨时,模型在10:00时达到最大水深0.450 m.本文在水文水动力学模型分析的基础上,基于地形数据构建二维水动力模型作为补充,并采用洪水风险率危险性分析法分别对片区洪水危险性进行了量化计算和空间分析,可以为典型城市洪涝情景模拟及风险量化分析提供一定的技术支撑.
Due to climate change and urbanization,coastal Chinese cities are facing increasingly severe flooding.A hydrodynamic coupling model was developed from InfoWorks ICM,model parameters were verified with measured rainfall and monitored water lever data at gully pot in the Baima basin in downtown Fuzhou on February 10,2021.Four rainfall driving models with return periods of 10,20,50 and 100 a were used.Maximum inundation water depth was found to reach 0.402 m at 10:12 with rainfall return period of 10 a,0.419 m at 10:07 with rainfall return period of 20 a,0.438 m at 10:02 with rainfall return period of 50 a,and 0.450 m at 10:00 with rainfall return period of100 a.To quantify flood risk,a 2 D hydrodynamic model was developed based on topographic data.HR risk analysis was used to quantify and analyze flood risk.This study should be helpful for typical urban flood simulation and risk analysis in other regions as well.
作者
叶陈雷
徐宗学
雷晓辉
李鹏
班春广
左斌斌
YE Chenlei;XU Zongxue;LEI Xiaohui;LI Peng;BAN Chunguang;ZUO Binbin(Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology,College of Water Sciences,Beijing Normal University,100875,Beijing,China;China Institute of Water Resources and Hydropower Research,100038,Beijing,China)
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2021年第6期784-793,共10页
Journal of Beijing Normal University(Natural Science)
基金
国家自然科学基金资助项目(52079005)
北京师范大学学科交叉项目(BNUXKJC1927)。
