Research Article
Force and Deformation Characteristics during the Reconstruction and Expansion of Shallow Single-Tube Tunnels into Large-Span Multiarch Tunnels
Table 6
Axial forces of initial supports of left and right tunnel tubes (kN).
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Note. FYY is the axial force of initial support of right tunnel tube after completion of right tunnel tube excavation. FYZ is the axial force of initial support of right tunnel tube after completion of left tunnel tube excavation. FZZ is the axial force of initial support of left tunnel tube after completion of left tunnel tube excavation. |