Research Article
Analysis of the Main Factors Influencing the Dominant Frequency of Blast Vibration
Table 2
Drilling and blasting parameters for the blast in 3# massif.
| | Blast site | 3# massif | | Experiment | 1# | 2# |
| | Blastholes | Multiple | Single | Multiple | Single | | Blasthole diameter (mm) | 115 | 115 | 115 | 115 | | Blasthole length (m) | 13.2–14.9 | 14.8 | 12.7–14.7 | 14.2 | | Blasthole spacing (m) | 4.5 | — | 4.5 | — | | Row spacing (m) | 4.5 | — | 4.5 | — | | Charge diameter (mm) | 70/90 | 90 | 70/90 | 90 | | Charge weight per hole (kg) | 66–90 | 90 | 69–93 | 87 | | Stemming length (m) | 4.0–5.5 | 4.0 | 4.5 | 4.5 | | Number of rows | 4 | — | 4 | — | | Number of blastholes | 116 | 1 | 126 | 1 |
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