Abstract: Through the mechanical derivation on bolt grouting reinforcement shearing resistance strength of the joint surface, the action mechanism of bolt grouting reinforcement in jointed rock roadway is obtained and the self-supporting ability of rock is enhanced by joint application of the anchor bolt and the grouting.The numerical simulation analysis on the jointing soft rock roadway with no supports and bolt grouting reinforcement is made by using the FLAC^3D software.It indicated that bolt grouting reinforcement plays a significant role in improving jointing soft rock roadway force status and limiting roadway rock deformation.Therefore, it concluded that bolt grouting reinforcement is an effective supporting for the jointed rock mass.

Key words: Jointed rock roadway, Bolt grouting reinforcement, Pressure grouting, Numerical simulation