Table 2: Tunnel and batter exercises.
| Exercise type | Description | |
| Shotcrete exercises | On tunnel | Seal of the front (section of 5 cm thickness) |
| Shotcrete over mesh and bolts | ||
| Shotcrete over truss | ||
| On batter | Seal of the front (section of 5 cm thickness) | |
| Shotcrete over special bolts | ||