摘要
在已有溃坝洪水数学模型基础上建立的溃坝洪水计算模型,可对洪水由库尾向坝址的传播过程、溃坝洪水向下游的推进过程、溃坝洪水漫过堤防后在下游城镇内的淹没过程进行水动力学模拟.利用所建立的溃坝洪水计算模型,对某水电站大坝溃坝洪水在拟定的各工况下进行的坝下游洪水预测表明,溃坝历时、水库上游来流量及溃坝时不同的坝前水位是影响该模型计算结果的主要因素.
The dam-break flood mathematical model, which is developed on the basis of the previous research of dam-break floods, can simulate the propagation of a dam-break flood from the reservoir tail to the dam site, the advancing of a dam-break flood in the downstream channel, and the submergence of a dam-break flood in the downstream town using a hydrodynamics method. By use of the developed dam-break flood model, prediction results of a dam-break flood with several planned working conditions show that the dam-break duration, the upstream flow of the reservoir and the water levels before the dam during the dam-break are the main influencing factors of the calculation results of the model.
出处
《水利水运工程学报》
CSCD
北大核心
2005年第2期9-17,共9页
Hydro-Science and Engineering
基金
国家重大基础研究计划(973)项目(2003CB415203)
关键词
一、二维非恒定水流
溃坝洪水
溃坝历时
水库上游来流量
溃坝时坝前水位
数值模拟
one-dimension and two-dimension unsteady flow
dam-break flood
dam-break duration
upstream flow of reservoirs
water levels before the dam during the dam-break
numerical simulation
