Comparison of Two Finite Element Models for the Prediction of Permafrost Temperatures.

摘要

The thermal regime of freezing soils is of concern to scientists and engineers interested in a wide range of problems. For highway and airport planning and construction in northern regions, there is a need to be able to predict the soil temperatures, freeze front positions, ice segregation and frost heave over long periods of time. For these projects, the surface boundary conditions will be altered by construction, for example, or by removal of the vegetative mat and by changes in surface elevation, slope and exposure. The soils, fill and various embankment and construction materials used for these projects will have a wide range of thermal and hydraulic properties.