Velocity

2013

NovAtel's Annual Journal of GNSS Technology Solutions and Innovation

Issue link: http://velocitymagazine.epubxp.com/i/164724

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GNSS-Aided Mining Wikimedia Commons Wikipedia The PiT, the Bit, and the Benefit Learn how NovAtel receivers improve the attitude (and profts) of a manufacturer of automated drilling solutions and their open pit mining customers. o 30 velocity 2013 pen pit mines present a harsh and dangerous environment— for machinery and for workers. They also pose a particular challenge for global navigation satellite system (GNSS) technology—especially regarding the issue of blocked and reflected satellite signals that increase as mining equipment nears the steep pit walls (Figure 1). Nonetheless, mining is an industry that demands operational reliability, consistency, and the kind of precision that GNSS brings. This is particularly true when it comes to blast hole drilling operations: the better a mine can control the location of the tip of the drill, the less time and handling of mined material that is needed—not to mention reduced wear and tear on downstream processing equipment. Most mines attempt to blast holes within 20–30 centimetres (8–12 inches) of the mine plan, both horizontally and vertically. Horizontal hole spacing is critical to controlling rock fragmentation. The service life of the crushers used in processing the blasted materials (ore and waste rock) can be reduced if fragments are too large or if too much fine material is produced. Hole depth is important for creating a flat bench for subsequent mining activities. Designing the bench with a slight slope helps to improve For more Solutions visit http:/ /www.novatel.com

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