Research Article
Research and Application of Integrated Presplitting Blasting in Nonpillar Mining Technology
Table 1
Presplitting blasting parameters.
| | No. | Blast hole length (m) | Angle with floor (°) | Blast hole diameter (mm) | Charge length (m) | Charge weight (kg) | Number of detonators | Sealing mud length (m) | Charge structure |
| | A-A | 3 | 85 | 35 | 1.8 | 1.2 | 1 | 1.2 | 6 | | B-B | 10 | 75 | 50 | 7.5 | 3.6 | 1 | 2.5 | 2-3-4-4-3-2 |
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