中国防汛抗旱2026，Vol.36Issue(4)：47-53,7.DOI:10.16867/j.issn.1673-9264.2025299
山地河谷城市溃坝山洪风险分析研究
Research on risk analysis of dam-break floods in mountainous river valley cities
摘要
Abstract
Small reservoirs in hilly areas serve as crucial water conservancy facilities,playing a significant role in flood control,irrigation,and other aspects.However,in the event of a dam breach,severe hazards to downstream cities can occur.This paper takes Guangyuan City as an example and employs numerical simulation methods to analyze the impact of reservoir dam breaches on downstream urban areas by constructing dam breach models,hydrological models,and hydrodynamic models.The study reveals that dam breaches in small reservoirs in hilly areas can cause severe impacts on downstream cities,with the maximum flow velocity of breach floods exceeding 15 m/s,posing a significant threat to urban infrastructure and the safety of residents'lives and property.For reservoirs with larger catchment areas downstream,the combined effect of breach floods and rainfall-induced flash floods can result in dual impacts on the city.Such reservoirs,if breached,can lead to more severe disaster consequences and require prioritized prevention measures.This research can provide theoretical foundations and decision-making support for the safety management of small reservoirs in hilly areas and urban flood disaster mitigation.关键词
山地城市/洪涝统筹/溃坝洪水/山洪风险/小水库Key words
mountainous cities/flood and waterlogging management/dam-break floods/flash flood risk/small reservoirs分类
建筑与水利引用本文复制引用
刘媛媛,韩军山,杨国庆,刘业森,姜记威..山地河谷城市溃坝山洪风险分析研究[J].中国防汛抗旱,2026,36(4):47-53,7.基金项目
国家自然科学基金重大基金项目(52394235). （52394235）
