Research Article
A Study of Blast Vibration Propagation Law under Negative Altitude Terrains
Table 2
Parameters used for the deep-hole bench blasting procedure.
| | Bench height H (m) | Resistance line (m) | Depth Δh (m) | Pitch row a (m) | Array pitch b (m) | Loaded length L1 (m) | Unit consumption (kg/m3) | Packing height (m) | One charge of explosives Q (kg) |
| | 6 | 2.5 | 0.5 | 2.5 | 2 | 2.23 | 0.35 | ≥3.0 | 10.5 | | 7 | 2.8 | 0.5 | 2.8 | 2.5 | 3.41 | 17.2 | | 8 | 3.0 | 0.5 | 3.0 | 2.5 | 4.37 | 21 |
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