Abstract:

The article presents in detail the monitoring results of the biasedpressure entrance section of the doublearched Fuxi tunnel on Tong～Huang highway and presents the analysis on the monitoring results. Furthermore, on basis of the construction practice of the tunnel, thearticle analyses on the features of the perimeter displacement of the surrounding rock mass, the crown settlement, the loading conditions of the reinforcement structure and theground surface settlement of the tunnel and recommends some engineering countermeasures, which provides timely and effective guidance for the reinforcement and consolidation of the tunnel, thus guaranteeing the tunnel construction safety.

Key words: doublearchedtunnelwith biased pressure monitoringand measurement  , deformation engineering countermeasure