Abstract: In connection with the characteristic of large deformation, high deformation rate, long duration and strong rheology in tunnel with soft rock under high pressure, the author has analyzed the regulation of their impact on the rheology of surrounding rock which is based on the software of FLAC3D numerical simulation through the model of Burgers, and four creep curves can be got to show the relationship between time and depth, lateral pressure coefficient, elastic modulus and viscosity coefficient respectively.

Key words: deep, soft rock roadway under high stress, rheology, FLAC3D numerical simulation