DOI: 10.1007/s11069-020-03979-w
论文题名: A simplified mathematical model for the dam-breach hydrograph for three reservoir geometries following a sudden full dam break
作者: Hu H. ; Zhang J. ; Li T. ; Yang J.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 102, 期: 3 起始页码: 1515
结束页码: 1540
语种: 英语
中文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168527
Appears in Collections: 气候变化与战略
There are no files associated with this item.
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
Recommended Citation:
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]. Natural Hazards,2020-01-01,102(3)