In light of the squeezing deformation problem

based on Muzhailing tunnel research and other relative data analysis

it is concluded that large value and long time deformation are the squeezing deformation characteristics

both sides are usually advantage location in the whole deformation of tunnel. Test data show that surrounding rock pressure

stress of steel arch centering

axial force of anchor have a larger value in rigid support

where stress of steel may exceed the yield strength of material; anchor is more effective on side walls than other position; surrounding rock pressure and deformation increment is inversely proportional. The results show that rock pressure can be reduced by control release of surrounding rock deformation

is beneficial to the long-term stability of the tunnel structure. Yielding support is proposed

and reserved deformation can be predicted preliminarily. Numerical calculation shows that large enough stiffness is required for rigid support to control displacement in a small range

Yielding support has advantages in control deformation and reduces stress of steel; it is a better control technology in squeezing deformation tunnels.