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Based on the features of the structure of double-arch permeable rib tunnel and its spatial deformation mechanism, a corresponding construction monitoring and measuring program was demonstrated in this paper. The reasons of the vault slope deformation and cracking which was the main risk during the construction were analyzed according to the monitoring data. Moreover, through using the method of structural load, a detailed and comprehensive feedback analysis of the stability of lining structure, rib beam and mid-connection wall was made under the most unfavorable construction condition, which was dynam-relaxed rack mass of the vault slope. Finally engineering treatment was proposed to ensure the construction safety and long-term stability of this new-style tunnel.

The Monitoring and Feedback Analysis of the Vault Slope Deformation for the Permeable Rib Double-Arch Tunnel