Research on surrounding rock phase change effect to the initial supporting in cold region tunnels

DOI

10.2991/iccet-15.2015.135How to use a DOI?

Keywords

Cold region tunnels; Temperature field; Phase change; Supporting force Thermal insulation layer

Abstract

In order to study the influence of surrounding rock temperature phase change to the initial supporting force, temperature sensors, pressure box, steel force meter were used to monitor the tunnel environment temperature, surrounding rock temperature, pressure between surrounding rock and shotcrete layer, steel stress etc. The results show that the average environment temperature remain about 9 , surrounding rock temperature increased with the exposure time, the melting depth is 1m when exposure time is 7d; the change of pressure between spray layer and supporting was small; constructing insulation layer in time can protect the surrounding rock and improve initial supporting force obviously, the research results can provide basis for tunnel construction in cold region.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yuwei Zhang
AU  - Youyun Li
PY  - 2015/11
DA  - 2015/11
TI  - Research on surrounding rock phase change effect to the initial supporting in cold region tunnels
BT  - Proceedings of the 5th International Conference on Civil Engineering and Transportation 2015
PB  - Atlantis Press
SP  - 726
EP  - 729
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccet-15.2015.135
DO  - 10.2991/iccet-15.2015.135
ID  - Zhang2015/11
ER  -