Continuous production is crucial in underground mining operations. One big boulder can bring the whole material flow process to a stop. With that in mind, Sandvik has developed a mobile secondary breaking rig that splits boulders without the use of explosives.
Secondary breaking drill rigs
Sandvik DB120 is a completely new mobile secondary breaking unit, designed for safe breaking of oversized, low loose boulders. After drilling, boulders are split by hydraulic wedge. No explosives are needed.
| Models | Drift size class (m) | Rock drill | Hole length (mm) | Hole diameter (mm) | Splitter | Splitting force (kN) | Control system |
|---|---|---|---|---|---|---|---|
| DB120 | 3 x 3 | HLX1 | 800-1200 | 48 | Hydraulic wedge | 6500 | Radio remote |