Table 4.
Details of the effects of karst locations on tunnel floor.
| Case | Location | Distance with the tunnel/m | Thickness of karst/m | Width of karst/m |
|---|---|---|---|---|
| 1 | Up | 1 | 14 | 14 |
| 2 | 2 | |||
| 3 | 3 | |||
| 4 | Down | 1 | 14 | 14 |
| 5 | 2 | |||
| 6 | 3 | |||
| 7 | Right | 1 | 14 | 14 |
| 8 | 2 | |||
| 9 | 3 |
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