摘要
水库大坝是我国防洪、抗旱等广泛采用的水利工程措施,但坝体溃决也会造成不可估量的损失。洪水漫顶冲刷导致的溃口发展是土石坝溃决的主要形式。传统计算方法中溃口发展过程一般由用户人为指定,虽然计算方便,但缺乏对水流和坝体之间相互作用关系的考虑。为此,结合已有研究成果讨论了一种新方法来计算溃口发展过程,计算结果表明,溃口发展过程是高度非线性的,若将其作为线性处理,可能会低估最大溃坝流量。
The reservoirs and dams are widely used in flood control and drought resistance in China,but the breach of dam will cause immeasurable losses.The breach process of earth-rock dam causing by flood overtopping erosion is the main reason of earth-rock dam failure.In the traditional calculation method,the process of earth-rock dam breach is generally specified by the user,which is convenient to breach flood calculation,but the interaction between flood flow and dam is not sufficiently considered.To this end,a new method is proposed to calculate breach process based on existing research results.The calculation results show that the breach process is highly nonlinear.If the breach process of earth-rock dam is treated as a linear event,the maximum dam breach discharge may be underestimated.
作者
杨忠勇
罗铃
杨百银
马良
黄琼
李盼盼
朱士江
徐刚
YANG Zhongyong;LUO Ling;YANG Baiyin;MA Liang;HUANG Qiong;LI Panpan;ZHU Shijiang;XU Gang(College of Hydraulic and Environment Engineering,China Three Gorges University,Yichang 443002,Hubei,China;China Renewable Energy Engineering Institute,Beijing 100120,China;Shenzhen Shenshui Water Resources Consulting Co.,Ltd.,Shenzhen 518012,Guangdong,China)
出处
《水力发电》
北大核心
2019年第9期43-47,共5页
Water Power
基金
水电工程水文气象重大关键技术应用研究-梯级水库群防洪减灾预报预警系统研究(DJ-ZDZX-2016-02-06)
深水咨询智慧流域管控决策支持系统研究(SDHZ2019003)
关键词
土石坝
溃口发展
溃决流量
计算方法
earth-rock dam
dam breach process
breach discharge
calculation method
