Coupling Bank Stability and Bed Deformation Models to Predict Equilibrium Bed Topography in River Bends
Publication: Journal of Hydraulic Engineering
Volume 133, Issue 10
Abstract
Attempts to include river bank erosion predictors within morphological models are becoming increasingly common, but uncertainty surrounds the procedures used to couple bed deformation and bank erosion submodels in a way that maintains the mass continuity of eroded bank sediment. Herein we present a coupling procedure that comprises two discrete elements. First, immediately following bank failure, the slumped debris comes to rest at the bank toe as a planar surface inclined at an “angle of repose.” Second, we use a fractional transport model to simulate the subsequent erosion and deposition of the failed bank material debris. The method is demonstrated with an example in which an equilibrium bed topography model is combined with a river bank erosion model to predict the morphological response of a river bend to a large flow event.
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Information
Published In
Journal of Hydraulic Engineering
Volume 133 • Issue 10 • October 2007
Pages: 1167 - 1170
Copyright
© 2007 ASCE.
History
Received: Apr 9, 2003
Accepted: Apr 23, 2007
Published online: Oct 1, 2007
Published in print: Oct 2007
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