Research Article
Determination of the Installation Time of Secondary Liner during Excavation of Large Cross-Section Double-Arch Tunnels
Table 7
Calculated displacement of each section during construction of the secondary liner.
| | Monitoring section | Up (mm) | Ul (mm) | Um (mm) | Ut (mm) | Actual settlement (mm) | Monitoring settlement (mm) |
| | Section 1 | 15.4 | 3.6 | 32.5 | 51.5 | 33.5–38.6 | 14.4–19.5 | | Section 2 | 15.6 | 2.9 | 33.5 | 52.0 | 33.8–39.0 | 15.3–20.5 | | Section 3 | 14.9 | 3.0 | 31.8 | 49.7 | 32.3–37.3 | 14.4–19.4 |
|
|
