A REVIEW OF MACHINE PARAMETERS INFLUENCING THE DRILLING RATE IN MINES

7th International Scientific Conference - SGEM2007, www.sgem.org, SGEM2007 Conference Proceedings/ ISBN: 954-918181-2, June 11-15, 2007

ABSTRACT

Drilling rate is one of the main determinants of drilling cost. The performance
of any drill bit is affected by the complex interaction of numerous factors.
The principal factors that require consideration in predicting drilling rate,
particularly for mining application, are the characteristics of the rock and the
operating parameters of drilling machine. In this paper, the most important
operating parameters of drilling machine were reviewed using many basic
studies on drilling rate and dillability since 1956. The result demonstrates that,
rotational speed, weight on bit, flushing pressure and bit diameter are the most
effective parameters that influencing the drilling rate in mines.

Keywords: Drilling, Rotational speed, weight on bit, flushing pressure, bit
diameter.