干旱区生态环境知识资源中心(Arid): 2D-HEC-RAS Modeling of Flood Wave Propagation in a Semi-Arid Area Due to Dam Overtopping Failure

Arid

DOI	10.28991/cej-2021-03091739
	2D-HEC-RAS Modeling of Flood Wave Propagation in a Semi-Arid Area Due to Dam Overtopping Failure
	Karim, Ibtisam R.; Hassan, Zahraa F.; Abdullah, Hassan Hussein; Alwan, Imzahim A.
通讯作者	Karim, IR (corresponding author), Univ Technol Baghdad, Civil Engn Dept, Baghdad 10066, Iraq.
来源期刊	CIVIL ENGINEERING JOURNAL-TEHRAN
ISSN	2676-6957
EISSN	2476-3055
出版年	2021
卷号	7 期号:9 页码:1501-1514
英文摘要	Dam overtopping failure and the resulting floods are hazardous events that highly impact the inundated areas and are less predictable. The simulation of the dam breach failure and the flood wave propagation is necessary for assessing flood hazards to provide precautions. In the present study, a two-dimensional HEC-RAS model was used to simulate the flood wave resulting from the hypothetical failure of Al-Udhaim Dam on Al-Udhaim River, Iraq, and the propagation of the resulting dam-break wave along 100 km downstream the dam site for the overtopping scenario. The main objective is to analyze the propagation of the flood wave so that the failure risk on dam downstream areas can be assessed and emergency plans may be provided. The methodology consisted of two sub-models: the first is the dam breach failure model for deriving the breach hydrograph, and the second is the hydrodynamic model for propagating the flood wave downstream of the dam. The breach hydrograph is used as an upstream boundary condition to derive the flood impact in the downstream reach of Al-Udhaim River. The flood inundation maps were visualized in RAS-Mapper in terms of water surface elevation, water depth, flow velocity, and flood arrival time. The maximum recorded values were: 105 m (a.m.s.l.), 18 m, 5.5 m/s, and, respectively. The flow velocity decreased from upstream to downstream of the terrain, which means less risk of erosion in the far reaches downstream of the study area. The inundation maps indicated that the water depth and flow velocity were categorized as Catastrophic limits on the terrain's area. The results offer a way to predict flood extent and showed that the impact of a potential dam break at Al-Udhiam Dam will be serious, therefore, suitable management is needed to overcome this risk. Moreover, the maps produced by this study are useful for developing plans for sustainable flood management.
英文关键词	Breach Hydrograph Overtopping Hypothetical Failure Al-Udhaim Dam 2D HEC-RAS Model
类型	Article
语种	英语
开放获取类型	gold
收录类别	ESCI
WOS记录号	WOS:000696991900003
WOS关键词	BREACH PARAMETERS
WOS类目	Engineering, Civil
WOS研究方向	Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362868
作者单位	[Karim, Ibtisam R.; Alwan, Imzahim A.] Univ Technol Baghdad, Civil Engn Dept, Baghdad 10066, Iraq; [Hassan, Zahraa F.] Univ Warith Al Anbiyaa, Coll Engn, Civil Engn Dept, Karbala, Iraq; [Abdullah, Hassan Hussein] Minist Water Resources Gen Studies & Engn Designs, Baghdad, Iraq
推荐引用方式 GB/T 7714	Karim, Ibtisam R.,Hassan, Zahraa F.,Abdullah, Hassan Hussein,et al. 2D-HEC-RAS Modeling of Flood Wave Propagation in a Semi-Arid Area Due to Dam Overtopping Failure[J],2021,7(9):1501-1514.
APA	Karim, Ibtisam R.,Hassan, Zahraa F.,Abdullah, Hassan Hussein,&Alwan, Imzahim A..(2021).2D-HEC-RAS Modeling of Flood Wave Propagation in a Semi-Arid Area Due to Dam Overtopping Failure.CIVIL ENGINEERING JOURNAL-TEHRAN,7(9),1501-1514.
MLA	Karim, Ibtisam R.,et al."2D-HEC-RAS Modeling of Flood Wave Propagation in a Semi-Arid Area Due to Dam Overtopping Failure".CIVIL ENGINEERING JOURNAL-TEHRAN 7.9(2021):1501-1514.