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PARAMETERS INFLUENCING ORE DILUTION IN UNDERGROUND MINES

AUTHOR/S: ERCIKDI, B., KESIMAL, A., YILMAZ, E., KAYA, R.
Sunday 1 August 2010 by Libadmin2003

3rd International Scientific Conference - SGEM2003, www.sgem.org, SGEM2003 Conference Proceedings/ ISBN: 954-918181-2, June 9-13, 2003, 99- 108pp

ABSTRACT

This paper provides an overview of the various issues influencing ore
dilution in an underground mining. The paper reviews the dilution problem
throughout the entire mining process, and provides a rational approach to
underground mine design in order to minimize dilution. The stages contributing to
dilution include orebody delineation, design and sequencing, stope development,
drilling and blasting, and production stages. Vibrations generated by the drillingblasting
operations during the ore production could accelerate the opening of
existing natural joints and cracks probably leading to the ore dilution. The effects
of drilling-blasting on stability can be determined via measurements of blast
vibrations, hole deviation, hole angle and distance of the holes to the exposed
stope walls to develop controlled blasting procedures and hence to minimize the
ore dilution. Vibration measurements done have shown that overbreaks is
increasing with the high vibrations generated by the drilling-blasting operations
during the ore production.

Keywords: Ore Dilution, Drilling-Blasting, Orebody Delineation

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