Research Article
Determination of the Installation Time of Secondary Liner during Excavation of Large Cross-Section Double-Arch Tunnels
Table 4
Deformation of the surrounding rock under different stress release rates.
| | Plan | Crown settlement (mm) | Horizontal convergence (mm) | Max. ground settlement (mm) | | Left | Right | Left | Right | Left | Right |
| | Plan 1 | 20.7 | 19.6 | −0.6 | −0.3 | 17.1 | 13.7 | | Plan 2 | 20.9 | 19.8 | 0 | −0.2 | 17.7 | 14.4 | | Plan 3 | 27.7 | 25.1 | 0.6 | 0.3 | 25.3 | 21.8 | | Plan 4 | 28.4 | 25.8 | −0.2 | 0.4 | 25.8 | 22.3 |
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