Jan 15, 2021

New drill targets narrow vein drift development

New drill targets narrow vein drift development

Sandvik Mining and Rock Solutions has launched a new intelligent single-boom, electro-hydraulic drill for tunneling and mining development in narrow vein drifts.

The Sandvik DD212 is an upgrade of the highly successful Sandvik DD210 development drill rig.

Sandvik said the first unit ordered by an Australian contractor would arrive in March 2021, followed by several more deliveries later in the year.

The manufacturer describes the Sandvik DD212 as a compact drill solution enabling mines to open smaller tunnel sections and benefit from increased levels of productivity with more meters advanced.

Based on factory and field tests, the Sandvik DD212 delivers up to 20 per cent reduction in boom positioning time per face and about 15 per cent improvement in drill penetration rate.

Its improved pull out ratio can result in up to 10 cm greater advance per face when compared to similar equipment.

Sandvik said the machine had reached 93 per cent mechanical availability during its mine site test period, accumulating 300 hours percussion within 2.5 month operation.

Features include:

  • New drilling control system THC562 with torque control and reaming hole selection, that enables the DD212 to provide increased drilling performance, yet reduces the wear on both the rock drill and rock tools.
  • New intelligent boom SB20i – for accurate hole electronic positioning. The boom offers large face drill coverage from 6sq m to 25sq m.