Author(s): Andrew Tuthill; Gordon Gooch
Linked Author(s): Andrew M. Tuthill
Keywords: No Keywords
Abstract: A major disadvantage of conventional ice control booms is their limited effectiveness at water velocity above about 0.7 mls and Froude number greater than about O. I. A I: 25 scale hydraulic model study of a generic rectangular channel investigated alternatives for ice retention at open water velocities in the 0.6 to 1.0 mls (prototype) range. Alternative boom unit geometries and boom configurations were tested, using a plastic ice material and natural ice. Boom cable tensions were measured as ice accumulated upstream of the structures. The study focused on ice restraint capacity of the boom, ice entrainment and ice erosion velocities, as well as the effect of ice friction along the channel sides. Although it was possible to increase the ice restraint capacity of model booms beyond conventional levels, ice entrainment and under ice erosion limited boom performance at higher water velocities.
Year: 1998