Abstract：For ensuring the stabilization of slope around tunnel entrance，the tunnel design criterion gives out the definite demands to solpe gradient and excavating high，but these demands are confined only the sort of surrounding rock，can not judge the influence of layer property of surrounding rock and ground water. The paper uses the rotational equilibrium stabilizaton method to analyze the influence factors of the slope stabilization，and gives out the constructive opinions to confirm tunnel entrance reasonably，and to ensure stabilization of the side and face upward slope.
2002, Vol. 19 
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