AN APPROACH TO THE CONSOLIDATION OF SNOW.

A consolidation theory is developed for an age-hardened snow under uniaxial stress in the porosity range of 35 to 55% by considering one mechanism, viz., viscous flow of interparticle bonds. For a uniaxial stress sigma, the differential equation for porosity n in terms of time t is shown to be 1/(1-...

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Bibliographic Details
Main Authors: Feldt,E. D., Ballard,G. E. H.
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Format: Text
Language:English
Published: 1965
Subjects:
Snow
Ice and Permafrost
(*SNOW
COMPACTING)
POROSITY
DIFFERENTIAL EQUATIONS
VISCOSITY
COMPRESSION
Eta
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/AD0630648
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0630648
Description
Summary:A consolidation theory is developed for an age-hardened snow under uniaxial stress in the porosity range of 35 to 55% by considering one mechanism, viz., viscous flow of interparticle bonds. For a uniaxial stress sigma, the differential equation for porosity n in terms of time t is shown to be 1/(1-n) dn/dt = nu sigma n/eta (1-an) where a and nu are structural parameters and eta is the coefficient of viscosity of ice. Comparison of this equation and the integrated form with existing data predicts consistent and reasonable values for a. The predicted values of eta/nu range from 0.01 to 100 times the published values for eta, which may indicate that nu, and hence the consolidation rate, is greatly affected by the diagenetic history of the snow and the conditions of experimentation. (Author)

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