Experimental Investigation of Sediment Stability in Reservoirs of the Rhône River

Experimental Investigation of Sediment Stability in Reservoirs of the Rhône River

Duration: 2019.05.19 to 2019.12.19
Department: LWW

Experimental Investigation of Sediment Stability in Reservoirs of the Rhône River

Abstract

In this project, undisturbed sediment cores are removed from two reservoirs of the Rhône River using a Frahm Sediment Sampler. They will be used to investigate the erosion behavior in various vertical sediment layers. In addition, the sediment characteristics in the same vertical layers will be analyzed.

Two reservoirs will be investigated, the “Barrage de Motz” and the “Barrage du Pouzin”, which are operated by CNR (Compagnie Nationale du Rhône).

In the first reservoir “Motz”, sediment core sampling will take place from the floating platform of the LWW and the sampling technique developed for this purpose. In the second reservoir “Pouzin”, the Frahm Sediment Sampler will be operated from CNR’s hydrographic survey boat Frédéric Mistral. It is intended to obtain six sediment core samples from each reservoir, resulting in a total of 12 sediment cores. The aim is to test the overall applicability of the device in different reservoirs under changing external conditions and requirements.

Experimental investigations are carried out on the obtained sediment cores in the hydraulic laboratory of the LWW, in order to study their erosion beavhior and the sediment characteristics. This results in two work packages:

  • Experimental erosion tests using the SETEG-system.
    The system consists of the SETEG erosion flume and the measurement technology PHOTOSED to study the vertical erosion stability of sediments.
  • Sediment characterization in different vertical sediment layers.
    This includes physical, chemical and biological parameters to gain insights into local variations and to study their stabilization potential (e.g. the influence of varying clay, silt, and sand content).

Project manager

Research assistants

Department

Duration

From: 19.05.2019

To: 19.12.2019

Cooperation partners

CNR - Compagnie Nationale du Rhône

 

directions

Pfaffenwaldring 61, 70569 Stuttgart, Germany

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