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Rock Mechanics and Rock Engineering
Published in: Rock Mechanics and Rock Engineering 3/2010

01-05-2010 | Discussion

Discussion on “Assessment of Some Brittleness Indexes in Rock-drilling Efficiency” by Rasit Altindag, Rock Mechanics and Rock Engineering, DOI: 10.1007/s00603-009-0057-x

Author: Saffet Yagiz

Published in: Rock Mechanics and Rock Engineering | Issue 3/2010

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I read the technical note entitled “Assessment of some brittleness indexes in rock-drilling efficiency” by Rasit Altindag, Rock Mechanics and Rock Engineering, doi: 10.​1007/​s00603-009-0057-x. This note aims at establishing the relationship between brittleness and drillability of various rocks. However, there are several uncertainties in the note regarding both the brittleness effect on the rate of penetration and the presented brittleness classification for drillability of rocks. The aim of this discussion is to enlight these uncertainties. …
previous article Assessment of some brittleness indexes in rock-drilling efficiency
next article Reply to the Discussion by Yagiz on “Assessment of Some Brittleness Indexes in Rock-Drilling Efficiency” by Altindag, Rock Mechanics and Rock Engineering, DOI:10.1007/s00603-009-0057-x

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Literature
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Clark GB (1979) Principles of rock drilling. Colorado School of Mines Quart, Colorado 74:91–93
Howarth DF (1987) The effect of pre-existing microcavities on mechanical rock performance in sedimentary and crystalline rocks. Int J Rock Mech Min Sci Geomech Abstr 24:223–233
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Yagiz S (2002) Development of rock fracture and brittleness indices to quantifying the effects of rock mass features and toughness in the CSM model basic penetration for hard rock tunneling machines. PhD Dissertation, T-5605, Colorado School of Mines, USA, 289 p
Yagiz S (2009) Assessment of brittleness using rock strength and density with punch penetration test. Tunn Undergr Space Technol 24:66–74CrossRef
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Metadata
Title
Discussion on “Assessment of Some Brittleness Indexes in Rock-drilling Efficiency” by Rasit Altindag, Rock Mechanics and Rock Engineering, DOI: 10.1007/s00603-009-0057-x
Author
Saffet Yagiz
Publication date
01-05-2010
Publisher
Springer Vienna
Published in
Rock Mechanics and Rock Engineering / Issue 3/2010
Print ISSN: 0723-2632
Electronic ISSN: 1434-453X
DOI
https://doi.org/10.1007/s00603-009-0078-5

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