密云水库流域"21·7"与"23·7"暴雨洪水对比分析
Comparative analysis of"21·7"and"23·7"rainstorm floods in Miyun Reservoir basin
段新光 1潘连和 2胡琦 2刘福平 3褚旭 2苏赫2
作者信息
- 1. 北京市水利工程管理中心 北京 100038
- 2. 北京市密云水库管理处 北京 101512
- 3. 北京市北运河管理处 北京 101100
- 折叠
摘要
近年来,极端天气呈多发、频发态势.2021年密云水库创历史高水位155.30 m,流域年平均降水量为建库以来历史第一,年来水量为历史第二,"21·7"场次暴雨洪水是近年来密云水库流域典型暴雨洪水;而"23·7"暴雨洪水是近年来受台风影响的旱涝急转的典型暴雨洪水.通过2场暴雨洪水的降雨、洪水过程情况对比分析,总结密云水库流域暴雨成因、时空分布特征、洪水特性和演变规律.研究成果为密云水库典型暴雨洪水预报提供借鉴,为水旱灾害防御工作提供参考.
Abstract
In recent years,extreme weather events have become more frequent and intense.In 2021,the water level of the Miyun Reservoir reached a historical high of 155.30 m,which was the highest annual av-erage rainfall in this basin since the reservoir was built,and the second highest annual inflow in history.The"21·7"rainstorm flood was a typical rainstorm flood in Miyun Reservoir basin in recent years,while the"23·7"rainstorm flood was a typical example of rapid transition from drought to flood influenced by a typhoon.By analyzing the rainfall and flood processes of these two events,this study compared and con-trasted the causes of the rainstorms including spatial and temporal distribution characteristics,flood char-acteristics,and evolution patterns.These findings provide insights for forecasting future typical rainstorm floods in Miyun Reservoir and offer valuable reference for flood and drought disaster prevention efforts.
关键词
密云水库/暴雨/洪水Key words
Miyun Reservoir/rainstorm/floods引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据