Dam Protections against Overtopping and Accidental Leakage

Miguel Ángel Toledo & Rafael Morán, Department of Civil Engineering: Hydraulics, Energy and Environment E.T.S. de Ingenieros de Caminos, Technical University of Madrid, Madrid, Spain. Eugenio Oñate, International Center for Numerical Methods in Engineering, Barcelona, Spain.

• Preface; Keynote lectures: Technical manual: Overtopping protection for dams; Review of embankment dam protections and a design methodology for downstream rockfill toes; Flood overtopping protection for concrete dams; Failure of embankment dams due to overtopping or accidental leakage; Dam failures of embankment dams caused by overtopping or accidental leakage –New aspects for breach widening and deepening processes; Failure of dams due to overtopping – A historical prospective; Overtopping and internal erosion on small dams in Burkina Faso; Failure of the downstream shoulder of rockfill dams in overtopping or accidental leakage scenario; Structural failure of the clay core or the upstream face of rockfill dams in overtopping scenario; Simulation of the beginning of failure in rockfill dams caused by overtopping; CFD study of the time dependent flow pattern around the slope of rockfill dams in overtopping scenario; Soft protections for embankment dams: Design of overtopping-resistant rockfill dams; Isoresistant double slope for the optimization of overtopping-resistant rockfill dams; Practical challenges and experience from large-scale overtopping tests with placed riprap; Hard protections for embankment dams: Continuously-reinforced concrete slab spillways built over embankment dams in Spain: Molino de la Hoz and Llodio Dams; Comprehensive literature review on dam overtopping incidents; Barriga Dam spillway: a case study of wedge-shaped blocks technology; Physical and numerical modeling for understanding the hydraulic behaviour of Wedge-Shaped-Blocks spillways; Masonry dams failure due to overtopping and its protections Failures of masonry or concrete dams by overtopping;Laboratory measurements and numerical simulations of overtopping nappe impingement jets; Characterization of the dynamic actions and scour estimation downstream of a dam; Highly-converging chutes as an overtopping protection for concrete dams: physical and numerical modelling; Miscellaneous:Probabilistic methods for hydrologic dam safety analysis; Two-dimensional direct rainfall hydraulic models applied to direct calculationof hydrologic events in dams to prevent overtopping CFD analysis of flow pattern in labyrinth weirs; Analysis of the design of energy-dissipating structure in spillways

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