Laboratory measurement of the shear strength of ice-filled rock joints

Author:

Davies Michael C. R.,Hamza Omar,Lumsden Bruce W.,Harris Charles

Abstract

AbstractTo assess the safety against failure of rock slopes in cold regions, such as high mountain areas, where stability is potentially maintained by ice in rock discontinuities, the shear strength of ice-filled rock joints was investigated in a series of direct shear-box tests. To permit control and repeatability, the experiments were conducted using simulated rock specimens. These were cast in the laboratory using high-strength concrete. Laboratory measurements showed that at a constant rate of shearing, the interface shear strength between ice and a joint surface of repeatable roughness is a function of both temperature and normal stress.

Publisher

International Glaciological Society

Subject

Earth-Surface Processes

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