Spacing : burden = 1.2
BDBLASTDESIGNPattern & delay studio
Surface bench blasting
Shape the blast.
See the outcome.
An interactive workspace for pattern geometry, initiation timing and first pass performance estimates.
Live plan view
Blast pattern
OverallRowDrag or select a hole
100%
Delay colours0 ms144 ms287 ms39 connections
Applied design parameters
- Pattern
- Staggered
- Rows × holes/row
- 5 × 8
- Total holes
- 40
- Burden
- 3.5 m
- Spacing
- 4.2 m
- Bench height
- 10 m
- Subdrill
- 1 m
- Hole depth
- 11 m
- Stemming
- 3 m
- Hole diameter
- 115 mm
- Charge / hole
- 68 kg
- Max charge / delay
- 68 kg
- Inter-hole / row delay
- 17 / 42 ms
- Maximum firing time
- 287 ms
- Powder factor
- 0.178 kg/t · 0.463 kg/m³
- Total explosive
- 2,720 kg
- Rock mass
- 15,288 t
- Predicted PPV / criterion
- 3.63 / 10 mm/s
- Vibration status
- Within model limit
Advisory concept design. Verify all values, site constants, initiation limits and current statutory requirements before use.
↔ B 3.5 m ↕ S 4.2 m⌀ 115 mm
Hole depth less stemming
0 duplicate delay group(s)
36% of entered criterion