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Pipeline Frost Heave Predictions Using a 2-D Thermal Model

by J. F. (Derick) Nixon, Hardy Associates Ltd, Calgary, Alberta, Can,



Document Type: Proceeding Paper

Part of: Research on Transportation Facilities in Cold Regions

Abstract:

Chilled structures founded on initially unfrozen soils cause a zone or 'bulb' of frost to develop with time. This time period may be of seasonal duration, as in the case of roads or ice rinks, but may persist for many years as in the case of pipelines or cold storage plants. The theory predicts the frost heave resulting from two components, namely the water arriving at the freezing front to form ice lenses, and the freezing of the in situ pore water. The writer's 2-D HAL thermal simulator was recently modified to incorporate the Segregation-Potential frost heave predictive method. This paper reviews the implementation procedure together with some of the results generated using the new HAL/SP model.

Subject Headings: Thermal analysis | Geotechnical models | Frost heave | Two-dimensional models | Pipelines | Ice | Water pipelines

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