Progressive Failure of an Overtopped Embankment. Mechanics of embankment erosion during overflow. Christchurch: University of Canterbury, 2007 Overtopping Breaching of Rock-Avalanche Dams. In: NOAA National Weather Service Report. FLDWAV: A generalized flood routing model. DAMBRK: The NWS dam break flood forecasting model. Denver: Water and Power Resources Services, 1981įread D L. Concerted action on dam break modeling (CADAM). One-dimensional numerical modelling of dam-break waves over movable beds: Application to experimental. J Hydraulic Eng, 2007, 133(1): 48–58Ībderrezzak K E A, Paquier A, Gay B. One-dimensional modeling of dam-break flow over movable beds. Computational dam-break hydraulics over erodible sediment bed. Formation of a jump by the dam-break wave over a granular bed. In: Proceedings of European Concerted Action on Dam-Break Modeling. A semi-analytical solution for the dam-break problem over a movable bed. Depth-averaged 2D numerical modeling of unsteady flow and nonuniform sediment transport in open channels. Nonuniform sediment transport in alluvial rivers. BREACH: An erosion model for earthen dam failures. In: Hey R D, Bathurst J C, Thorne C R, eds. Mathematical modeling of sediment movement. Wellington: Institue of Geological and Nuclear Sciences, 2001. Techniques for evaluating the size of potential dam-break floods from natural dams. Incorporation of circular arc failure for cohesive soil and lateral seepage in bank slope will also enhance its applicability to complex situations.Ĭosta J E, Schuster R L. Limitations will arise in the situation where the soil composition of barrier dam is significantly inhomogeneous. The agreement between the simulation results and the observed data shows the applicability of the present approach for emergency analysis of quake lakes. The process of dam breach development is found to be nonlinear in cascades due to the combined effects of headcutting and bank collapse. Conceptualized breach erosion model that involves few parameters enables quick calibration based on the monitored hydrological data in emergency analysis where fully geotechnical information about the barrier dam is not available. Bed erosion and lateral development of the dam breach are represented through accounting for the underlying physics including selective sediment transport and gravitational collapse. A physics-based numerical simulation approach is proposed for real-time prediction of dam breach development of the Tangjiashan Quake Lake in the case of emergency treatment. The Tangjiashan Quake Lake is the largest quake lake triggered by the 5.12 Wenchuan Earthquake that happened on in China, posing high risk of catastrophic flash flood hazards to downstream human life and properties.
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