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Bedload transport assessment on a physical model of a large river widening using ultrasonic Doppler velocity measurements

Publications associées (35)

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Probabilistic Failure Analysis of Riprap as Riverbank Protection under Flood Uncertainties

Anton Schleiss, Eugen Brühwiler, Michael Pfister, Mona Jafarnejad Chaghooshi

Existing riverbank riprap could face the risk of failure if the flood regime changes in future. Additionally, changed sediment transport in rivers, as a possible result of climate change, impacts the failure risk of flood protection measures. Evaluation of ...

2017

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Two-phase flows occurring at flow constrictions such as bridges or open sediment check dams are complex, especially for steep rivers with bedload transport. Dangerous bedload deposition and backwater effects may occur in steep mountain rivers at bridges. I ...

Asce-Amer Soc Civil Engineers2017

Sediment traps are used for the protection of urban settlements at rivers in mountainous regions. These structures aim at the retention of sediment in the case of hazardous floods, but existing sediment traps tend to retain sediment also when the discharge ...

EPFL2017

Experimental evaluation of the discharge capacity of flow constrictions by check dams in mountain rivers

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

Open check dams are built to retain bed load in case of major floods and may have filtering, sieving as well as dosing effects on sediment transport. The combination of an upstream reservoir with an open check dam is designated as bed load trap. These stru ...

2015

Case study – Delta restoration at a steep river mouth

Anton Schleiss, Giovanni De Cesare, Stéphanie Joëlle André, Stéphane Christian Olivier Terrier

The mouth of the Baye de Clarens torrent in Switzerland is currently constrained by lateral training walls, sequent sills and a bridge with a low hydraulic capacity. Due to a bed load trap upstream, few sediments reach the mouth. To improve flood protectio ...

IAHR2015

Sediment management measures for river restoration and flood protection in alpine valleys

Bastien Roquier

Sediment transport plays a key role in the morphological and ecological value of river ecosystems. The present study explores the design of sediment management measures for a flood control and revitalization project in an alpine valley of the Swiss Alps. T ...

Crc Press-Taylor & Francis Group2014

Swiss Competences in River Engineering and Restoration

The world is like a river, running along in its bed, this way and that, forming sandbanks by chance and then being forced by these to take a different course. Whereas this all proceeds smoothly and easily and gradually, the river engineers have great diffi ...

CRC Press/Balkema2014

Design of a bed load and driftwood filtering dam, analysis of the phenomena and hydraulic design

Giovanni De Cesare

Flood protection often calls on to the realization of retention works for bed load as well as wood and debris flow. Certain relatively recent arrangements did not perform according to their intended function, what shows the complexity of the design and the ...

CRC Press/Balkema2014

Effects of successive floods on bed load transport in a steep flume.

Christophe Ancey, Joris Heyman, Blaise Etienne Marceau Dhont, Pascal Venetz

Rivers in mountainous areas are subject to cyclic perturbations due for instance to summer storms or daily variations in snowmelt. Such phenomena cause successive floods occurring under very similar forcing conditions. However, as shown by several field st ...

2014

Recent flood events in Switzerland and across Europe pointed out several deficiencies in hazard assessment, planning, and prediction methods for flood risk mitigation. A good understanding of the dynamics of mountain rivers, grounded on a sound physical-ba ...

EPFL2013