Research Article
Influence of Base Rock Deterioration on Tunnel Bottom Structure Damage under Train Excitation
Table 5
Development table of cavity deterioration of base rock.
| | Operation days (day) | Number of particle loss in the surrounding rock | Fracture number | Average width (cm) | Average depth (cm) |
| | 30 | 3 | 1 | — | — | | 180 | 10 | 34 | 10 | 6 | | 730 | 21 | 242 | 38 | 10 | | 1460 | 35 | 2150 | 89 | 40 |
|
|
