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Innovative methods to release fine sediments from seasonal reservoirs

De Cesare, Giovanni ; Manso, Pedro ; Chamoun, Sabine ; Guillén Ludeña, Sebastián ; Amini, Azin ; Schleiss, Anton

Published in:
Proceedings of the 26th International Congress on Large Dams, ICOLD, 612-624
Presented at:
26th International Congress on Large Dams, ICOLD, Vienna, Austria, July 1-7, 2018
Year:
2018
Publisher:
CRC Press/Balkema
Keywords:
The papers present three innovative solutions for fine sediment manage- ments in seasonal reservoirs, which are at different stages of maturity. Operational reservoir stirring using jet-like inflows may facilitate sediment routing, at no addi- tional cost and without water losses. Forced stirring, using the SEDMIX device, ; has shown very promising results in laboratory and from computational modelling and is now entering the phase of proof-of-concept at prototype scale. Sediment venting through the bottom outlets has been object of extensive research, allowing this solution to be consistently integrated in design criteria from now onwards. Future work is required to complete the development of the first two solutions, both in terms of physical principles (inlet/outlet jet-flows) and prototype scale-up (SEDMIX). Regarding venting, compiling data of field operations is the next logical steps in view of obtaining adequate feedback on the water volumes consumed as function of venting efficiency, as well as downstream impacts in terms of released sediment concentration.
Note:
[1219]
Laboratories:
LCH
PL-LCH

Record appears in:
Scientific production and competences > ENAC - School of Architecture, Civil and Environmental Engineering > IIC - Civil Engineering Institute > PL-LCH - Hydraulic Constructions Platform
Scientific production and competences > ENAC - School of Architecture, Civil and Environmental Engineering > IIC - Civil Engineering Institute > LCH - Hydraulic Constructions Laboratory
Conference Papers
Work produced at EPFL

Note: The status of this file is: EPFL only


 Record created 2018-09-05, last modified 2019-02-13

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