Engineering & Mining Journal

APR 2016

Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr

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EURO MINE EXPO PREVIEW APRIL 2016 • E&MJ; 69 www.e-mj.com Real-time Slope Monitoring Replacing the previous Real Aperture Radar (RAR) technology with Synthet- ic Aperture Radar (SAR), IDS allowed mine slope monitoring systems to move from monitoring focused areas to entire pit walls at a high resolution. In 2012, IDS took another step forward, adding a new dimension with the FPM360 system, which enables a mine to integrate data from multiple IBIS radars through a sin- gle user interface to provide full coverage of an entire pit. Currently, the IBIS radar family offers the right solution for every mine slope monitoring need: the IBIS-FM long- range solution up to 4.5 km; the IBIS- FMT mobile long-range version, which is easily towable by a light vehicle; and the IBIS-Rover mobile medium-range ra- dar for broad area slope monitoring. The only Synthetic Aperture Radar with a ro- tating antenna capability, the IBIS-Rover provides a 270° feld of view with a scan time of just 4 minutes. At Euro Mine Expo 2016, IDS will present revolutionary developments in radar monitoring: the IBIS-FB and IBIS Guardian TrueVector. IBIS-FB is a remote sensing monitoring system designed to support the assessment of blasting opera- tions and control their impact both on the pit slopes and nearby structures. IBIS-FB integrates standard vibration monitor- ing systems providing remote broad area measurements of ground vibrations with high accuracy. After every single blast, IBIS-FB measures a range of performance indexes at multiple points at long distanc- es, even allowing data to be received from within inaccessible areas that traditional monitoring systems can't monitor. IBIS Guardian TrueVector is a fea- ture-rich software suite for the interpre- tation of IBIS radar data and the manage- ment of slope stability risks in open-pit mining operations. With the TrueVector technology, IBIS Guardian is able to re- solve the spatial direction of displace- ment vectors for hundreds of thousands of overlapping radar pixels that have been monitored simultaneously by two or more radar systems. Accuracy is sub-millimet- ric. No prisms, markers or refectors are required on the slope, instead, the IBIS systems rely on natural backscattered information to rapidly resolve spatially dense and continuous x, y, z, displace- ment information. Vertical Access Solutions Alimak Hek is a global market leader and pioneer in designing, developing, manufacturing and servicing industrial rack-and-pinion vertical access solutions. More than raise climbers, they are well- known worldwide for providing high-qual- ity hoists, elevators and platforms. Alimak Hek recently completed a shaft refurbishment project for the Tauern Tunnel in the Austrian Alps. The Tauern Autobahn near Salzburg serves as an im- portant north-south connection in region. The 6,500-m tunnel tubes are equipped with full cross ventilation and each tube is divided into four ventilation zones. Air handling units are located at the north- and south portal, as well as in a cavern between both tubes in the middle of the tunnel. The cavern is connected to the sur- face by a 600-m high, 10-m diameter shaft. Alimak rack-and-pinion elevators for personnel transport are mounted on the shaft's center wall, which splits the intake and exhaust air. The elevators operate by using a hoisting system that consists of winches, crane girders and defec- tion rollers. Both Alimak elevators were ready for refurbish- ment after nearly 50 years of use. Because of the spe- cial confguration, new el- evator cages could not be installed easily. Therefore, the elevators, the cable winch necessary for the operation, the horizontal carriage and the electrical control cabinets, as well as the transformers, were refurbished. The project was timed to minimize traffc inter- ruption as much as possi- ble. During the early au- tumn months, the elevator cages, electrical cabinets and winches were disman- tled. Using chain hoists, muscle power, precision and a special loading crane, these parts were brought through the top of the shaft. Specially constructed equipment was also used at the bottom of the shaft to disassem- ble the horizontal carriage, winch and electrical cabinets: A HEK MSM Super mast climbing work platform transport- ed the equipment from the recess to the shaft base. Refurbishment was completed in an ISO-certifed Alimak Hek production fa- cility in Skellefteå. After structural and electrical engineering tests, all compo- nents still usable were cleaned, sand- blasted, resealed and freshly painted. In addition to the Alimak components, the access stairs and railing in the recess of the supply air lift were cleaned, and the protective housing of the horizontal car- riage was refurbished. Completely refurbished and ftted with new safety devices, gears and mo- tors, the components began their journey back to their place of origin. Thanks to the experience gained during the disas- sembly and with the help of the equip- ment retained, the special elevator instal - lation was able to resume its service after successful installation. Alimak Hek recently refurbished two elevator carriages that operate in a ventilation shaft at the Tauern Tunnel in Austria.

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