Table 2 Variation of input and output parameters.
Parameter | Type | Unit | Symbol | Min | Max |
|---|---|---|---|---|---|
Spacing | Input | m | S | 8 | 9 |
Burden | Input | m | B | 7 | 8 |
Stemming length | Input | m | T | 7 | 8 |
Hole depth | Input | m | L | 14.90 | 16.10 |
Hole diameter | Input | mm | D | 165 | 311 |
Distance from the blast face | input | m | DI | 80.162 | 2426.738 |
Maximum charge per delay | input | kg | C | 402.3 | 1,529.5 |
Powder factor | Input | Kg/m3 | Pf | 0.57 | 0.78 |
Rock factor | Input | – | Rf | 3.26 | 6.15 |
Blastability index | Input | – | BI | 24 | 70 |
Ground vibration | Output | mm/s | Gv | 0.217 | 6.336 |
Fragmentation | Output | % | Fr | 70 | 81 |
