摘要
综述了国内外漫顶溃堤过程和海岸洪水在城市内部演进的数值模拟技术的研究进展,从溃口底部的冲刷、溃口侧壁的展宽和下游坡面的溯源冲刷三方面评述了溃堤机理模型,分析了各类洪水演进模型和建筑物概化方法的优缺点和适用性。针对当前沿海城市溃堤洪水模拟技术研究中存在的不足,指出未来需要通过物理模型试验完善海堤溃决洪水模型,加强溃口泥沙冲蚀输运研究,优化城市洪水孔隙度模型,并充分考虑城市排水系统、汽车等对洪水传播的影响。
The process of overtopping breach and the numerical simulation of coastal flood evolution in urban interior at home and abroad was summarized.The mechanism model of dike-break was reviewed from three aspects,including the erosion at the bottom of the breach,the widening of the side wall of the breach and the retrogressive erosion of the downstream slope.The advantages,disadvantages and applicability of various flood inundation models and the generalization method of urban buildings were analyzed.Aiming at the shortcomings in the current study,it is necessary to improve the flood model of seawall breaching through physical model tests,strengthen the research of erosion and transportation of sediment in the breach,improve the theory of sediment transport in high-speed flow,optimize the porosity model of urban flood,and fully consider the impact of urban drainage system and vehicles on flood propagation.
作者
龚政
郭蕴哲
杭俊成
王培
GONG Zheng;GUO Yunzhe;HANG Juncheng;WANG Pei(Jiangsu Key Laboratory of Coast Ocean Resources Development and Environment Security,Hohai University,Nanjing 210098,China;Jiangsu Province Hydrology and Water Resources Investigation Bureau,Nanjing 210029,China)
出处
《水利水电科技进展》
CSCD
北大核心
2020年第3期78-85,共8页
Advances in Science and Technology of Water Resources
基金
国家重点研发计划(2016YFC0401505)。
关键词
溃堤洪水
城市洪水
沿海城市
城市建筑物
数值模拟
综述
dike-break flood
urban flood
coastal city
urban building
numerical simulation
review
