Abstract: This paper try to introduce TBM in deep roadway construction. Due to the contradiction between high stress and low intensity of the surrounding rock, nonlinear extrusion large deformation will easily happen after excavation, and TBM will be jammed easily. Classification of surrounding rocks is a fast and convenient way to analysis the risk of jamming, so that the engineers can forecast and judge the jamming state, reducing the loss. On the basis of bases on deep mine surrounding rock classification and the experience of QTBM model, considering the related parameters of squeezing deformation which influence jamming greatly, selecting four indexes—the rock uniaxial compressive strength, strength stress ratio, the integrity of the rock, rock hardness, the surrounding rock of deep roadway under the condition of TBM excavation is divided into Ⅰ(good), Ⅱ(good), Ⅲ(poor), Ⅳ(poor) four categories, each of which was described detaily. Finally the comparison relationship among the surrounding rock type, squeezing deformation levels and TBM jamming risk was established, according to which the jamming risk can be qualitative forecasted.

Key words: roadway, TBM, jamming, surrounding rock mass classification