Abstract:

During the construction of No. 9 inclined shaft of Wushaoling tunnel, large deformation occurs to the surrounding rock mass and the reinforcement structure. In the paper, the safety and economy of the primary reinforcement structure are evaluated and the rationality of the primary reinforcement parameters and the lining installation timing are discussed. It is proposed that enough attention should be paid to the compulsory monitoring items of tunnels so as to master the deformation process of the surrounding rock mass and reinforcement structure. The time validity and fundamental guidance significance of the monitoring data are emphasized. It is proposed that a brief monitoring implementation system should be established so as to achieve informationaided tunnel construction. During the tunnel construction, the key construction processes should be adjusted in accordance with the monitoring data and the monitoring data should be verified in the construction.

Key words: arge deformation, monitoring, surrounding rock mass, information aided construction