Concept

Barrage des Trois-Gorges

Publications associées (19)

Long-term behaviour of a dam aﬀected by alkali-silica reaction studied by a multi-scale model

Jean-François Molinari, Emil Gallyamov, Mauro Corrado, Jonathan Fauriel

This paper aims to employ a 2D thermo-mechanical multi-scale ASR model for the analysis of a concrete gravity dam in Western Switzerland. Simulation results are com- pared to the ﬁeld measurements and observations. Analysis of the results reveals no eﬀect ...

2021

Stilling Basin Performance Downstream of Stepped Spillways

Ivan Stojnic

Advances in dam construction techniques have significantly increased the number of implemented stepped spillways worldwide. A key hydraulic feature of a stepped chute, compared to a smooth chute, is the enhanced energy dissipation resulting in a reduced re ...

EPFL2020

Computational modelling of fine sediment release using SEDMIX device with thrusters

Giovanni De Cesare, Azin Amini, Arianna Yadira Onate Paladines

Problem: Reservoir sedimentation occurs in dams worldwide, reducing the live storage available in the reservoirs. Possible solution: Jenzer-Althaus 2011) testes a water stirring device (called SEDMIX) that keeps sediments in suspension, enhancing its relea ...

2019

Effects of deep pools on salinization in coastal reservoirs

David Andrew Barry, Jing Xu

Coastal reservoir contributes to alleviating the freshwater shortage in stressed areas, and the salinization of reservoir water is one of the most important challenges that coastal reservoir faced. Field-investigation indicates that there are many deep poo ...

2019

Potential increase in energy storage capacity in the Swiss Alps to support the massive development of renewables: Case study of the Grande Dixence hydropower scheme

Anton Schleiss, Pedro Filipe De Almeida Manso, Jérôme François Sylvain Dujardin, Blaise Monay

Only 42 % of the mean annual production of large hydropower plants in the Swiss Alps is stored in their reservoirs. Once the reservoirs are full at the end of the summer semester, plants are operated as run-on-the-river in order to avoid spilling. A signif ...

2019

The influence of the opening width of check dams on bedload continuity of mountain rivers

Anton Schleiss, Mário Jorge Rodrigues Pereira Da Franca, Sebastian Schwindt

The design of open check dams at mountain rivers for flood protection has an essential impact on the sediment budget of downstream river reaches. A key issue is the bedload transfer hindering and retention which can be influenced by the geometry of the ope ...

2016

Influence of consecutive sediment replenishment on channel bed morphology

Anton Schleiss, Mário Jorge Rodrigues Pereira Da Franca, Elena Battisacco, Lena Bösch

Dams interrupt the longitudinal connectivity of a river as they store water and trap sediment. When transport capacity downstream of dams exceeds sediment supply, water becomes hungry and channel incision, bed armouring and reduction of morphological diver ...

2016

Laboratory research: bed load guidance into sediment bypass tunnel inlet

Anton Schleiss, Giovanni De Cesare, Pedro Filipe De Almeida Manso, Milad Daneshvari

Sediment management in reservoirs situated in mountainous regions is a critical operational concern with direct implications in live storage sustainability and therefore in production revenues. The paper presents the main results of a physical model study ...

R.M. Boes ed.2015

Karahnjukar dam spillway: Comparison of operational data and results from hydraulic modelling

Michael Pfister

The Karahnjukar dam spillway is the spillway for the Halslon reservoir, the main reservoir for the 690 MW Karahnjukar Hydroelectric Project in East Iceland. The spillway consist of a 140 m long overflowing weir with a capacity of 2250 m3/s which discharges ...

2015

Hydropower plants: pride and prejudice

Davide Wüthrich, Jessica Zordan, Romain Pasquier, Gaudenz Moser, Malgorzata Alicja Stylo, Mélanie Baehler

The development of alternative energy solutions to meet the increasing energy demand requires the expansion of the production network. In this context hydropower plants (HPPs) represent a reliable renewable energy source [3] and the possibility of integrat ...

2015

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