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DOI	10.1007/s11069-020-03979-w
	A simplified mathematical model for the dam-breach hydrograph for three reservoir geometries following a sudden full dam break
	Hu H.; Zhang J.; Li T.; Yang J.
发表日期	2020
ISSN	0921030X
起始页码	1515
结束页码	1540
卷号	102 期号:3
英文摘要	The prediction of dam-break water flow at dam site is essential to reduce the potential for loss of damage in the downstream floodplain. In this study, the influence of reservoir shapes (rectangular, trapezoidal and triangular wedge) on dam-break discharge hydrographs at a dam site was investigated to estimate the peak discharge and discharge hydrograph quickly. By assuming instantaneous and complete breaches to simplify the discharge process, a formula for the peak discharge and a simple analytical solution to the entire discharge hydrograph following a dam break at the dam site were generated. The discharge hydrograph at the dam site derived by the proposed mathematical model was validated through a comparison with the results calculated by the numerical simulation and other existing approaches. The outflow discharges calculated by both the mathematical and numerical model was very similar under the conditions of the three different reservoir shapes. The overall discharge hydrograph shape was mainly influenced by the length of the reservoir, while the magnitude of the outflow discharge was primarily affected by the initial water depth. © 2020, Springer Nature B.V.
关键词	A simple analytical solution Discharge hydrograph Instantaneous dam break Peak discharge Reservoir shape
英文关键词	computer simulation; dam failure; floodplain; flow field; hydrogeology; hydrograph; mathematical analysis; numerical model; outflow; peak discharge; prediction; reservoir; water depth; water flow
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205728
作者单位	State Key Laboratory Base of Eco-Hydraulic Engineering in Arid Area, School of Water Resources and Hydropower, Xi’an University of Technology, Xi’an, 710048, China
推荐引用方式 GB/T 7714	Hu H.,Zhang J.,Li T.,et al. A simplified mathematical model for the dam-breach hydrograph for three reservoir geometries following a sudden full dam break[J],2020,102(3).
APA	Hu H.,Zhang J.,Li T.,&Yang J..(2020).A simplified mathematical model for the dam-breach hydrograph for three reservoir geometries following a sudden full dam break.Natural Hazards,102(3).
MLA	Hu H.,et al."A simplified mathematical model for the dam-breach hydrograph for three reservoir geometries following a sudden full dam break".Natural Hazards 102.3(2020).