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The Mechanics of River Ice Jams

Author(s): Mehmet Secil Uzuner; John F. Kennedy

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Keywords: No Keywords

Abstract: An analytical model is formulated for a two-dimensional jam of fragmented ice on a stream flowing in a uniform channel. Predictions of the thickness of ice accumulation, streamwise normal stress, lateral normal stress, and shear stress are made. The governing differential equation is derived on the basis of the force equilibrium of an elemental control volume taken from a fragmented ice cover. Hypotheses are introduced concerning the nature of the force interaction between ice fragments and the resulting differential equation is integrated under two different assumptions concerning the nature of shear stress applied to the bottom of the cover by the stream flow. Finally, some laboratory data on the mechanical strength properties of fragmented floating ice covers are summarized.

DOI:

Year: 1974

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