摘要
为分析计算云溪水库的设计洪水,采用实测降雨资料和查图法计算设计暴雨,基于最不利原则选择暴雨结果,通过推理公式法和瞬时单位线法进行不同重现期设计洪水推算,并与原除险加固设计洪水成果作对比。结果表明:利用瞬时单位线法计算的0.1%~1%频率下的洪水设计成果与原除险加固成果差别在5%以内,相差不大,且千年一遇设计洪峰较原除险加固成果略小。因此,出于工程安全考虑,云溪水库除险加固工程最终采用原除险加固设计洪水成果。
In order to analyze and calculate the design flood of Yunxi Reservoir,the measured rainfall data and the mapping method were used to calculate the design rainstorm,and the rainstorm results were selected based on the most unfavorable principle.The design flood of different return periods was calculated by the reasoning formula method and the instantaneous unit line method,and compared with the original design flood results of risk removal and hardening.Results showed that the use of instantaneous unit line method to calculate the frequency of 0.1%to 1%of design flood results with the original difference were within 5%,the consolidate results were similar,and the coming design flood peak slightly smaller than the original and consolidate achievements.Therefore,considering the safety of the project,the original flood design results were finally adopted in Yunxi Reservoir reinforcement project.
作者
陈亚健
瞿兰兰
CHEN Yajian;QU Lanlan(Middle Changjiang River Bureau of Hydrology and Water Resources Survey,Bureau of Hydrology of Changjiang Water Resources Commission,Wuhan 430010,China)
出处
《水利水电快报》
2023年第11期31-34,共4页
Express Water Resources & Hydropower Information
关键词
设计洪水
设计暴雨
推理公式法
瞬时单位线法
云溪水库
design flood
design storm
reasoning formula method
instantaneous unit line method
Yunxi Reservoir
