Study on the Range of Freeze-Thaw of Surrounding Rock from a Cold-Region Tunnel and the Effects of Insulation Material

Peng Qi; Jing Zhang; Zhi Rong Mei; Yue Xiu Wu

doi:10.4028/www.scientific.net/AMR.399-401.2222

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 399-401Study on the Range of Freeze-Thaw of Surrounding...

Study on the Range of Freeze-Thaw of Surrounding Rock from a Cold-Region Tunnel and the Effects of Insulation Material

Abstract:

A mathematical models for the coupled problem is established by considering heat and mass transfer and phase change for rock mass at low temperature, according to the theory of heat and mass transfer for porous media. It is considered of the influences of fluid transfer on the heat conduction and the temperature gradient on the seepage. By adopting the finite element method, the numerical simulation is done to study the range of frost-thaw of surrounding rock and the effects of insulation material in cold regions, which analysis the influence of tunnel depth and surrounding rock class on the range of frost-thaw, the change law of the frost-thaw area of different insulation material and the relationship between the frost-thaw area and the thickness of insulation material.

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Periodical:

Advanced Materials Research (Volumes 399-401)

Pages:

2222-2225

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.399-401.2222

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Online since:

November 2011

Authors:

Peng Qi, Jing Zhang, Zhi Rong Mei, Yue Xiu Wu

Keywords:

Coupled Hydro-Thermal, Frost-Thaw, Frozen Rock, Phase Change

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