IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 32nd Congress - Venice (2007) : THEME A: Engineering and Management of Fresh-water Systems : Determination of parameters for venting turbidity currents through a reservoir
Determination of parameters for venting turbidity currents through a reservoir
Author : J. Schneider, H. Badura, W. Troy, H. Knoblauch
Sedimentation is an increasing problem in Alpine reservoirs. It leads to a reduction of storage capacities of reservoirs on one hand and might endanger the operating equipment like bottom outlets as well as power conduit inlets and gates on the other hand. The presented measurements are a part of the project Influence of turbidity currents on reservoir sedimentation – venting through a bottom outlet as an alternative. The performed measurements, which should be showcased in this contribution, are the determination of the velocity distribution (ADCP), turbidity, temperature and conductivity in two locations in the reservoir Großsölk in Austria. The velocity measurements have been carried out with two down looking SONTEK Argonaut XR. The distance between the Argonauts and the bottom is about 8 meters. The other probes have been measured at the same locations. Besides the measurements in the reservoir additional probes are installed upstream and downstream of the reservoir. The first measurements show promising results. It could be demonstrated that during floods turbidity currents follow the Thalweg until they reach the dam, although the turbine was in operation and the bottom outlet was closed. This shows that a venting of turbidity currents might be possible during higher floods when the bottom outlet will be opened.
File Size : 1,514,388 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 32nd Congress - Venice (2007)
Article : THEME A: Engineering and Management of Fresh-water Systems
Date Published : 01/07/2007
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