摘要
“23·7”流域性暴雨洪水过程揭示了永定河支流清水河上斋堂水库来水与流域前期降雨之间具有一定的相关性,为明确水库产汇流与流域前期降雨量之间的规律,基于HEC-HMS软件构建斋堂水库流域水文模型,并对历史场次降雨洪水的产汇流过程进行模拟与分析.结果表明:前期降雨量对产流时机有着决定性的影响,45 mm为流域产流的平均降雨阈值,并视前期土壤墒情浮动变化,前期土壤越干阈值越大.水库产流临界雨量阈值的确定,对于认识流域产汇流规律、水库来水快速研判、洪水调度以及相关防御工作部署的时机等具有重要的参考意义.
The“23·7”basin-wide rainstorm and flood process revealed certain correlation between incoming water at Zhaitang Reservoir on Qingshui River(a tributary of Yongdinghe River)and previous rainfall in the basin.To clarify the law between runoff yield and concentration of reservoir and previous rainfall in the basin,a hydrological model of Zhaitang Reservoir basin was constructed with HEC-HMS software.Runoff yield and concentration process of historical rainfall and flood events was simulated and analyzed.Data show that previous rainfall has a decisive impact on the timing of runoff yield.Average rainfall threshold for runoff yield in the basin is 45 mm,which this fluctuates depending on previous soil moisture content.Drier the previous soil is,larger the threshold becomes.Determination of critical rainfall threshold for runoff yield of the reservoir has important reference significance to understand the following:runoff yield and concentration law of the basin,rapid judgment of incoming water of the reservoir,flood dispatch and timing of related defense work arrangements.
作者
薛志春
†刘绍辰
李永坤
胡小红
张旭旻
胡晓静
XUE Zhichun;LIU Shaochen;LI Yongkun;HU Xiaohong;ZHANG Xumin;HU Xiaojing(Beijing Water Science&Technology Institute,Beijing,China;Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology,Beijing,China;College of Resource Environment and Tourism,Capital Normal University,Beijing,China)
出处
《北京师范大学学报(自然科学版)》
CAS
CSCD
北大核心
2024年第5期625-631,共7页
Journal of Beijing Normal University(Natural Science)
基金
国家自然科学基金资助项目(51709272)
国家重点研发计划资助项目(2022YFC3002905)
北京市科技计划课题资助项目(Z201100008220005)。
关键词
斋堂水库
HEC-HMS水文模型
临界雨量阈值
产流规律
Zhaitang Reservoir
HEC-HMS hydrological model
critical rainfall threshold
runoff generation law