Prediction of the penetration rate of rotary blast hole drills using a new drillability index

S. Kahraman*, C. Balci, S. Yazici, N. Bilgin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

136 Citations (Scopus)

Abstract

Rotary blast hole drills were observed in several formations at different open pit mines and quarries. Rock samples were collected as near as possible to drilling locations and mechanical and physical properties of the total 22 rock samples were determined. Indentation tests were carried out on the block samples from the same formations. A new drillability index for the prediction of the penetration rates of rotary blast hole drills and the mechanical and physical properties of the rock formations was defined from force-indentation curves of indentation tests. A penetration rate model for rotary for blast hole drills was developed using this drillability index. It was seen that the model was valid for the formations having uniaxial compressive strength over 40 MPa and especially for carbonaceous rocks. The drillability index exhibits a significant correlation with the proportionality constant k defined in the model. It is also seen that significant correlations exist between the drillability index and rock properties suggesting that the proposed model may be used universally to estimate the penetration rate of rotary blast hole drills. (C) 2000 Elsevier Science Ltd. All rights reserved.

Original languageEnglish
Article number926
Pages (from-to)729-743
Number of pages15
JournalInternational Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts
Volume37
Issue number5
DOIs
Publication statusPublished - 2000

Fingerprint

Dive into the research topics of 'Prediction of the penetration rate of rotary blast hole drills using a new drillability index'. Together they form a unique fingerprint.

Cite this