Research Article
Effect of Initiation Location within Blasthole on Blast Vibration Field and Its Mechanism
Table 5
Drill and blast parameters in the production blasting experiment.
| Blasthole type | Hole diameter (mm) | Hole depth (m) | Burden (m) | Spacing (m) | Charge diameter (mm) | Charge weight (kg) | Stemming length (m) |
| Production holes | 115 | 9.3∼14.9 | 3.5 | 5.0∼6.0 | 90 | 48∼84 | 4.5∼5.5 | Single holes | 115 | 15.0 | — | — | 90 | 72 | 5.0 |
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