SANDVIK DU311―IN-THE-HOLE LONGHOLE DRILL RIGS
Sandvik DU311 is a highly versatile and compact ITH longhole drill fitted with an onboard booster and designed for underground mining in 4 x 4 m or larger production drifts. It is capable of drilling vertical and inclined fans, and single or parallel Ø89 – 254 mm (3½” – 10”) longholes up to 100 m in depth, using 3” to 8” in-the-hole hammers and Ø79 – 127 mm (31/8” – 5”) pipes. The DU311 can be fitted with a V-30 head for Ø30” (762 mm) reaming in service support, or reaming up to Ø17½” (445 mm) holes with 12” hammers in rapid raising. Additionally, it can also be used for exploratory Reverse Circulation (RC) drilling.
The DU311 is mounted on a 4-wheel drive frame-steered and diesel-powered carrier. It is equipped with the RH6230 top drive, CF706-F feed with fixed centralizer, PA15 single axis pipe arm, HS130 horizontal single slideover, ERIS drilling control panel and operator’s safety canopy. The 360° feed rotation, wide slide-over, and feed tilt angles make the unit suitable for most mining methods, various service support applications, and exploratory RC drilling. The CANbus based drilling control system and drilling instrumentation ensure good control of the drilling operation.
The layout of the Pegasus carrier is designed for good stability, ensuring fast and safe tramming in mine drifts. All service points are accessible from ground level.
