The analysis of temperature field distribution in Houanshan tunnel

Junfeng MI, He SONG, Chaoliang YE

Abstract


Through the temperature field test of Houanshan tunnel, we analyze the temperature distribution of surrounding rock, the longitudinal temperature distribution, insulation effect of insulation board, the analysis results as follows: (1) The temperature distribution with time of each measuring point change synchronously with outside temperature; the influence of tunnel temperature to surrounding rock is weakened gradually with the increase of radial depth; the tunnel exist a relatively stable temperature boundary conditions in the radial direction; (2) the temperature distribution is gradually uniform from the tunnel portal a certain distance; in the longitudinal, the temperature field along the route is a parabola distribution; (3)the maximum temperature difference of insulation board is 9.21℃.


Keywords


cold regions tunnel; spot test; temperature field; insulation board

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