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Erosion and sedimentation near the renovated weir lock complex of Asper in Belgium
Verelst, K.; Vandenbruwaene, W.; Peeters, P.; Heredia Gomez, M.; De Mulder, T. (2015). Erosion and sedimentation near the renovated weir lock complex of Asper in Belgium, in: Cheng, L. et al. (Ed.) Proceedings of the 7th International Conference on Scour and Erosion - ICSE 2014, The University of Western Australia, Perth, Australia, 2-4 December 2014. pp. 535-544
In: Cheng, L. et al. (Ed.) (2015). Proceedings of the 7th International Conference on Scour and Erosion - ICSE 2014, The University of Western Australia, Perth, Australia, 2-4 December 2014. CRC Press/Balkema: Leiden. ISBN 978-1-138-02732-9. XV, 818 pp.

Beschikbaar in  Auteurs 
Documenttype: Congresbijdrage

Trefwoorden
    Erosion
    Locks (Waterways)
    Sedimentation

Auteurs  Top 
  • Verelst, K.
  • Vandenbruwaene, W.
  • Peeters, P.
  • Heredia Gomez, M.
  • De Mulder, T.

Abstract
    In the weir lock complex of Asper along the river Scheldt in Belgium, two tainter gate weirs were constructed in a new bypass channel, which came into operation in 2009. After the flood wave event of November 2010 a bathymetric survey around the weir lock complex revealed several locations with erosion and sedimentation. The origin and evolution of this erosion and sedimentation was investigated by analysing the regular bathymetric monitoring data, computing the equilibrium profile for the new bypass channel and numerical modelling of the flow patterns around the weir lock complex. The analysis of the available bathymetric data indicates that the scour hole at the downstream junction of the bypass channel and the river channel migrates towards upstream and towards the right bank.Above this scour hole, the numerical modelling reveals the presence of a helical flow pattern, influenced by the unequal bed level and increased due to the presence of the scour hole.

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