Scholarly record
PARAMETERS INFLUENCING ORE DILUTION IN UNDERGROUND MINES
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.
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References16
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