Research Article
Force and Deformation Characteristics during the Reconstruction and Expansion of Shallow Single-Tube Tunnels into Large-Span Multiarch Tunnels
Table 2
Thickness and mechanical parameters of the prototype and model of the lining and middle partition wall.
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Note. The initial support thickness of 80.4 mm is converted to the thickness of the shotcrete with the same compressive stiffness (EA). |