Mitigation of sedimentation problems in the lower reach of the River Klaralven
2008 (English)In: Journal of Hydraulic Research, ISSN 0022-1686, Vol. 46, no 2, 224-236 p.Article in journal (Refereed) Published
The study focuses on the sedimentation problems found in the lower reach of the River Klaralven, where the river bifurcates into a west and an east channels at the city of Karlstad. During a period of thirty years, the sediment transport capacity of the west-channel has gradually diminished. This has caused a growing concern about the risk of flooding in the city. The study has aimed to find relevant methods for both increasing the hydraulic capacity of the west river channel, and mitigation of sedimentation problems. The main approach was numerical flow and sediment transport modelling. A two-dimensional depth-averaged model was used to study the influence of various river training measures. The model was found effective to address the sedimentation problem and the reduced hydraulic capacity in the river. To mitigate these problems, two effective engineering methods were controlling the water levels by partial gates and the use of groynes or vanes. The results suggested that a carefully calibrated and verified 2-D depth-averaged model can be used in supporting river restoration works and flood alleviation schemes.
Place, publisher, year, edition, pages
2008. Vol. 46, no 2, 224-236 p.
groynes, river training, sedimentation, two-dimensional models, vanes
IdentifiersURN: urn:nbn:se:kth:diva-17507ISI: 000255559100006ScopusID: 2-s2.0-43549116131OAI: oai:DiVA.org:kth-17507DiVA: diva2:335551
QC 201410212010-08-052010-08-052014-10-21Bibliographically approved