Research Article
Force and Deformation Characteristics during the Reconstruction and Expansion of Shallow Single-Tube Tunnels into Large-Span Multiarch Tunnels
Table 5
Compressive stresses at measurement points of the middle partition wall (MPa).
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Note. PY is the first principal stress at measurement point of the middle partition wall after completion of the right tunnel tube excavation. PZ is the first principal stress at measurement point of the middle partition wall after completion of the left tunnel tube excavation. |