Publication

Gestion du risque d’inondation sur l’Avançon par rétention de sédiments – optimisation sur modèle physique / Flood risk management of the Avançon river by means of sediment retention – physical model based study

Anton Schleiss, Jean-Louis Boillat
2012
Conference Papers

Abstract

La capacité de charriage du torrent de l’Avançon à travers la ville de Bex, en Suisse, est insuffisante en situation de crue. En octobre 2000, lors d’un événement de temps de retour estimé à 20 ans, le niveau d’eau a pratiquement atteint la limite de débordement à cause des alluvions accumulées dans le lit de la rivière. Plusieurs mesures de protection ont alors été envisagées, incluant un bassin de rétention des sédiments, placé parallèlement au cours d’eau en amont de la ville. Vu le concept novateur de l’ouvrage de dérivation, composé d’un seuil à engravures dans le cours d’eau et d’un déversoir latéral, il a été jugé nécessaire d’optimiser son fonctionnement sur modèle physique. La forme du déversoir latéral joue en l’occurrence un rôle fondamental pour la dérivation des sédiments.

Official source

https://infoscience.epfl.ch/entities/publication/fd2e89e9-231b-4a01-87f5-720674532145

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Anton Schleiss, Jean-Louis Boillat
2012
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/fd2e89e9-231b-4a01-87f5-720674532145

About this result

Related concepts (4)

Sediment basin

A sediment basin is a temporary pond built on a construction site to capture eroded or disturbed soil that is washed off during rain storms, and protect the water quality of a nearby stream, river, lake, or bay. The sediment-laden soil settles in the pond before the runoff is discharged. Sediment basins are typically used on construction sites of or more, where there is sufficient room. They are often used in conjunction with erosion controls and other sediment control practices.

Sediment control

A sediment control is a practice or device designed to keep eroded soil on a construction site, so that it does not wash off and cause water pollution to a nearby stream, river, lake, or sea. Sediment controls are usually employed together with erosion controls, which are designed to prevent or minimize erosion and thus reduce the need for sediment controls. Sediment controls are generally designed to be temporary measures, however, some can be used for storm water management purposes.

Retention basin

A retention basin, sometimes called a retention pond, wet detention basin, or storm water management pond (SWMP), is an artificial pond with vegetation around the perimeter and a permanent pool of water in its design. It is used to manage stormwater runoff, for protection against flooding, for erosion control, and to serve as an artificial wetland and improve the water quality in adjacent bodies of water. It is distinguished from a detention basin, sometimes called a "dry pond", which temporarily stores water after a storm, but eventually empties out at a controlled rate to a downstream water body.