An Optimization Approach to River Adjustmentsby Robert Millar, Univ of British Columbia, Vancouver, BC, Canada,
Michael Quick, Univ of British Columbia, Vancouver, BC, Canada,
Abstract: The adjustment of alluvial channels is presented here as a non-linear optimization problem in which the ideal channel will tend to adopt an optimum configuration subject to the imposed constraints. Bank stability is shown to play a key role, and increasing the bank stability causes the channel width to decrease, the depth to increase, and the slope to decrease. The theoretical predictions are tested on the gravel river data from Andrews (1984) and Hey and Thorne (1986).
Subject Headings: River bank stabilization | Alluvial channels | Nonlinear analysis | Channel stabilization | Hydraulics | Slope stability | Gravels
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