Author(s): Arnold M. Dean
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Keywords: No Keywords
Abstract: With the Increased utilization of flood plains, navigation and power generation in northern climates, it becomes increasingly important to understand the engineering characteristics of frazil ice accumulations. Frazil is generated and accumulates over large areas in waterways. Navigation through such great amounts of frazil will be impeded. Power generation suffers from the restricted flow caused by frazil accumulation. Having been generated in large quantities and attached as under-hanging dams, frazil significantly increases flooding potentials through channel restrictions and an increase in the total ice volume in a waterway. Techniques for measuring the physical properties of frazil ice are presented. These data will assist in predicting the flow patterns and the jamming potential in a waterway. The properties include porosity, density, vane shear strength, permeability and a measure of the structural strength (expressed through plate load bearing, dilatometer, and penetrometer or rammsonde data). Further characteristics include remote sensing of the accumulation and flow profiling beneath the accumulations. Examples of the acquired data are given.
Year: 1986