Abstract
This report deals with the behavior of tunnel and the simple test in the squeezing ground. It is concluded from thecase analysis of tunneling and model experiments that squeezing pressure occurs when overburden pressure exceeds the rock strength, time dependency of squeezing pressure is not so large, and the concentration of stress in the ground around tunnel causes squeezing pressure at muddy ground only. From this point of view, I think that angle of internal friction in residual strength calculated by the cyclic box shear test is the main index for the estimate of squeezing pressure.
