Concept

Dam failure

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Hydraulic performance of stepped spillway aerators and related downstream flow features

Stéphane Christian Olivier Terrier

Roller compacted concrete gravity dams are built since several decades. In combination with such dams, stepped spillways are very often used as efficient flood release structures. More recently stepped spillways are also excavated into rock along the abutm ...

EPFL-LCH2016

History shows that the economic prosperity of a society and its cultural wealth was always closely related to the level of the development of the hydraulic schemes, including dams and reservoirs. In view of climate change, dams and reservoirs will and have ...

2016

Surface Turbulence on Bores and Surges propagating on Smooth and Rough Beds

Anton Schleiss, Michael Pfister, Pedro Filipe De Almeida Manso, Davide Wüthrich

Hydrodynamic waves are characterised by unsteady, highly turbulent and irregular behaviours. In nature, such phenomena can be observed in dam breaks, impulse waves and tsunamis. Both wet bed bores and dry bed surges were experimentally reproduced on smooth ...

2016

A simple experiment, designed to investigate entrainment in geophysical free-surface flows such as avalanches and debris flows, was performed using a dam break of viscous fluid which travels over a rigid bed until meeting a shallow layer of the same fluid ...

2014

The hydropower potential in Africa is only very few exploited. The large rivers like Zambezi River still have considerable possibilities for installing further hydropower projects including the creation of reservoirs by large dams. The main African watersh ...

EPFL - LCH2013

Worldwide, almost 50,000 dams over 15 m height have been built during the last six decades with an aggregated storage capacity of 6,000 km3. The fact that large dams, by increasing irrigation and hydroelectricity production, can sustain development and red ...

EPFL2013

Has the Three-Gorges Dam made the Poyang Lake wetlands wetter and drier?

David Andrew Barry

The Three-Georges Dam holds many records in the history of engineering. While the dam has produced benefits in terms of flood control, hydropower generation and increased navigation capacity of the Yangtze River, serious questions have been raised concerni ...

American Geophysical Union2012

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

Abutment stability assessment of the Hongrin arch dam using 3D distinct element method

Azad Koliji, Jian Zhao, Thierry Bussard

The Hongrin north dam is a double curvature concrete arch dam located in western Swiss Prealps, which attains 125m high. The right bank abutment of the dam mainly consists of intensively jointed Neocomian limestone and exhibits zones of potential instabili ...

Taylor & Francis Group2012

Rock burst and slabbing failure and its influence on TBM excavation at headrace tunnels in Jinping II hydropower station

Jian Zhao, Lijun Yin

Two headrace tunnels and the drainage tunnel were excavated by tunnel boring machines (TBMs) in Jinping II Hydropower Station. During TBM excavation, two types of slabbing failure were encountered in these deep buried marble tunnels. One is rock bursting a ...

2012