Concept

Waterfall

Related publications (19)

Physical and numerical model study investigating plunge pool scour at Kariba Dam

Anton Schleiss, Michael Pfister, Erik Bollaert, Rafael Xavier Meriade Duarte

Kariba Dam is a 128 m high arch dam located on the border between Zambia and Zimbabwe. The dam has been constructed in the late 1950s and formed at that time the largest man-made lake worldwide. The dam is equipped with 6 flood gates, each about 9 m high b ...

2012

Dynamic response of a rock block in a plunge pool due to asymmetrical impact of a high-velocity jet

Anton Schleiss, Erik Bollaert, Matteo Paolo Elia Antonio Federspiel

Flood release structures of high-head dams generate high-velocity plunging jets. These may scour the downstream rocky riverbed and even damage the dam foundation. Assessment of the scour evolution is essential to ensure the safety of the dam and appurtenan ...

2011

Bedload transport on steep slope: a stochastic framework.

Christophe Ancey, Joris Heyman, François Mettra

Among the recent experimental studies focusing on the stochastic nature of bedload transport, some results are particularly intriguing: in experiments in which tagged particles (tracers) are tracked, the statistical moments of the time evolution of particl ...

2011

Measures to reduce dynamic plunge pool pressures generated by a free jet

Michael Pfister

Spillways often include a flip bucket as terminal energy dissipator, combined with a plunge pool. To prevent scour at the river bed for large jet fall heights additional measures are required, such as terminal chute widening or increase of the plunge pool ...

CRC Press, Taylor & Francis Group2011

Kárahnjúkar Dam spillway, Iceland: Swiss contribution to reduce dynamic plunge pool pressures generated by a high-velocity jet

Michael Pfister

Spillways often include a flib bucket as terminal energy dissipator, combined with a plunge pool. For large jet fall heights, the residual energy may provoke scour at the river bed. Additional measures are then required, such as chute widening, increase of ...

2011

Response of an Embedded Block Impacted by High-Velocity Jets

Matteo Paolo Elia Antonio Federspiel

High-velocity plunging jets, issuing from ood release structures of dams, may result in scouring of the rocky riverbed and even endanger the foundation of the dams. Assessment of the scour extent is essential to ensure the safety of the dam and appurtenant ...

EPFL2011

Ability of One-Dimensional Hairsine-Rose Erosion Model to Predict Sediment Transport over a Soil with Significant Surface Stones

David Andrew Barry, Seifeddine Jomaa

Surface stones affect erosion rates by reducing raindrop-driven detachment and protecting the original soil against overland flow induced-hydraulic stress. The aims of this study were, (i) to quantify how the stone characteristics affect the total sediment ...

2010

The influence of pool geometry and induced flow patterns in rock scour by high-velocity plunging jets

Pedro Filipe De Almeida Manso

The dissipation of energy of flood discharges from water releasing structures of dams is often done by plunging jets diffusing in water and impacting on the riverbed downstream. The construction of expensive concrete structures for energy dissipation can b ...

EPFL2006

WEC-C: A distributed, deterministic catchment model - Theory, formulation and testing

David Andrew Barry

WEC-C is a distributed, deterministic, catchment-scale water flow and solute transport model containing a number of innovations not present in comparable models. For example, it allows for the imposition of catchment topological changes resulting from land ...

2001

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