Application HEC-RAS Model to Simulate the Flood Wave Due to Dam Failure

Mohammed, Layla Ali; Khassaf, Saleh I.; Al-Murshidi, Kareem R.

doi:10.1109/sicn47020.2019.9019369

Cited by 2 publications

(1 citation statement)

References 10 publications

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“…The articles established methodology for determining flood extent and making strategies for a disaster response in flood-affected areas. Mohammed et al (2020) [8] simulated the break of the Haditha dam that lies on the Euphrates River. The HEC-RAS model was applied in this study based on Saint-Venant equations.…”

Section: Introductionmentioning

confidence: 99%

Modelling Flood Wave Propagation as a Result of Dam Piping Failure Using 2D-HEC-RAS

Mohamed,

Karim,

Fattah

et al. 2023

Civ Eng J

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In recent years, there has been a serious request for innovative, accurate approaches to be determined and controlled for dam failures. The present study aims to explore and evaluate the flood wave parameters that result from a dam break due to piping failure occurring in the body of the dam and routing the flood waves. Mosul Dam, which lies in the north of Iraq, and a reach of the Tigris River downstream the dam to Samarra Barrage at about 470 km are selected as a case study. A two-dimensional Hydrologic Engineering Center River Analysis System (2D HEC-RAS) and the Geographic Information System (GIS) have been supposed to be suitable for development calculations of the flood wave parameters based on the Digital Elevation Model (DEM) and land cover satellite images that enhance the calculations. The reservoir and two-dimensional flow area are delineated and incorporated with DEM. Manning`s coefficient for the whole area has been extracted according to the Land Cover satellite image, which showed that its value ranges between 0.025 to 0.037 with a correlation coefficient R2equal to 0.845 and 0.801 for the calibration and validation processes, respectively. The results of the scenario display a substantial performance of the maps produced from the model that represented the depth, velocity, and water surface elevation. All the maximum values of dam break parameters lie near the dam body and slightly decrease downstream. It is pre-eminent that the 2D HEC-RAS model is appropriate for analyzing and simulating the occurrence of dam breaches by visualizing the distribution of flood wave depth and velocities in two dimensions. Hence, the clear improvement in producing maps, which monitor the spread of hydrodynamic waves, gives an indication of risk areas that are threatened by inundation and aids in the formulation of emergency plans. Doi: 10.28991/CEJ-2023-09-10-010 Full Text: PDF

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Section: Introductionmentioning

confidence: 99%

Modelling Flood Wave Propagation as a Result of Dam Piping Failure Using 2D-HEC-RAS

Mohamed,

Karim,

Fattah

et al. 2023

Civ Eng J

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Evaluating the Hydraulic Performance of USBR II Stilling Basin with Rough Bed

Saleh,

Khassaf

2024

Tikrit j. eng. sci.

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Stilling basins are built in conjunction with dams, weirs, and gates to dissipate the high kinetic energy of incoming flow and prevent severe scouring of the downstream riverbed. Dissipation of this high energy can be achieved through forming a hydraulic jump. The hydraulic jump features, including the relative length, ratio of sequent depth, and energy dissipation, are utilized as criteria to evaluate the efficiency of the stilling basin operation. The present study involved conducting experimental and numerical tests to evaluate the performance of the USBR II stilling basin downstream of an ogee spillway using six upstream Froude numbers ranging between 6.37 and 14.97. Experiments were conducted for the Typified USBR II stilling basin. The results were used to perform mesh sensitivity for numerical simulation. The USBRII stilling basin with different rough beds was numerically simulated using FLOW-3D software. The rough beds were designed using three roughness intensities, 10%, 15%, and 22%, and three relative roughness heights: 1, 0.75. and 1. According to the numerical results, distributing staggered cubic elements in the bed of the USBR II stilling basin at 10% intensity and a relative roughness height of (1) enhanced the stilling basin performance compared to the smooth bed and other rough beds. In the case of the best roughness bed, the sequent depth ratio decreased by about 12.1%, and the energy dissipation enhanced by around 5.1% compared to the Typified basin.

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Application HEC-RAS Model to Simulate the Flood Wave Due to Dam Failure

Cited by 2 publications

References 10 publications

Modelling Flood Wave Propagation as a Result of Dam Piping Failure Using 2D-HEC-RAS

Modelling Flood Wave Propagation as a Result of Dam Piping Failure Using 2D-HEC-RAS

Evaluating the Hydraulic Performance of USBR II Stilling Basin with Rough Bed

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