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Abstract A model test was performed on distribution form of frost heaving of tunnel lining in laboratory. The surrounding rock(slate) of the tunnel was considered as fissured medium，so the frost heaving caused by water migration in fissures was mainly studied. In the model，the fissures were realized by laying seepy fabric among surrounding rock，and the low temperature condition was realized by putting refrigeration equipment in tunnel. The temperature and strain changes were measured by resistance thermometer elements and strain gages，respectively. The laboratory test results prove that the deformations in inverted arch and near the foot of inverted arch are smaller，in arch，arch spring and side wall are larger，the largest is in side wall. For further studying the distribution forms，the numerical simulation method was applied for analyzing frost heaving force calculated by different frost model. Compared the numerical simulation results with the converted laboratory model test results，the frost model of frost heaving force produced by the water-contained weathered rock layer was selected. That is，the frost heaving force is lateral and level acting on side wall of the tunnel lining，0.9 MPa in entrance and 0.6 MPa in tunnel trunk.
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2015, Vol. 34 
