Table 2 Experimental protocol table.
From: Study on the influence of blasting on the structural stability of newly-built and adjacent tunnels
Experimental section | Working condition | Blasthole position offset in side-wall area (yes/no) | Blasthole position offset in arch shoulder area (yes/no) | Vault area blasthole position offset (yes/no) |
|---|---|---|---|---|
1 | 1 | No | No | No |
2 | 2 | No | Yes | Yes |
3 | 3 | Yes | No | Yes |
4 | 4 | Yes | Yes | No |
