长江科学院院报2017，Vol.34Issue(9)：47-51,78,6.DOI:10.11988/ckyyb.20160594
梯级水库溃坝洪水对下游城市的淹没过程分析
Inundation Process of Downstream Cities byDam Break Flood from Cascade Reservoirs
摘要
Abstract
The propagation of dam break flood and its influence on cities in the downstream are important issues in dam safety research.In this paper, the inundation process of downstream cities were simulated and analyzed through numerical approach.A mountain river in south China with four cascaded reservoirs was selected as case study.The simulation was conducted with multiple dam break modes.Results suggest that the inundation speed and maximum inundated area are closely related to the maximum dam break discharge, i.e., related to the water head and size of the breach.The time required for maximum inundated area is related to the distance between city and reservoir.The speed as well as inundated area and inundated volume in the case of single break are less severe than those caused by successive cascaded break flood, which, however, floods and recedes dramatically.The duration of the inundation process for a city is related to the volume of the reservoir rather than to maximum break discharge.关键词
梯级水库/溃坝洪水/淹没面积/溃坝流量/淹没历时Key words
cascade reservoirs/dam break flood/inundated area/dam break discharge/inundation duration分类
建筑与水利引用本文复制引用
杨忠勇,郭红民,曹光春..梯级水库溃坝洪水对下游城市的淹没过程分析[J].长江科学院院报,2017,34(9):47-51,78,6.基金项目
水利部公益性行业科研专项资助项目(201401027) （201401027）
