ABSTRACT
Stress will distribute again after the rock is excavated. When the strength of the surrounding rock can adapt to change of stress state, roadway won’t take any artificial support measures and can maintain the stability of the roadway. While roadway is excavated in deep well, the change of stress state is large. The surrounding rock won’t adapt to the change and will cause serious damage. Therefore surrounding rock needs to be reinforced timely and effectively after excavation.
