An experimental study of surface and sub-surface damage in pulsed water-jet breakage of rocks

Dehkhoda, Sevda and Hood, Michael (2013) An experimental study of surface and sub-surface damage in pulsed water-jet breakage of rocks. International Journal of Rock Mechanics and Mining Sciences, 63 138-147. doi:10.1016/j.ijrmms.2013.08.013


Author Dehkhoda, Sevda
Hood, Michael
Title An experimental study of surface and sub-surface damage in pulsed water-jet breakage of rocks
Journal name International Journal of Rock Mechanics and Mining Sciences   Check publisher's open access policy
ISSN 1365-1609
1873-4545
Publication date 2013-10
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.ijrmms.2013.08.013
Open Access Status
Volume 63
Start page 138
End page 147
Total pages 10
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Collection year 2014
Language eng
Abstract This paper investigates the relative contributions of the pulse length and pulsation frequency on the surface and sub-surface damage that is caused by a pulsed water-jet on rock targets. Studies demonstrate that the failure zone directly under the impacted surface, including cavity formation and tensile crack-initiation, is caused by the impact stress and by water flows from the individual water-pulses. The magnitude of this damage is thus related to the pulsation frequency. The sub-critical cracks, which result from these impacts and which propagate to cause major rock-failure, are found to depend on the pulse length. Longer pulses are required to propagate cracks as the depth of damage (cavity depth) increases.
Keyword Experimental study
Pulsation frequency
Pulse length
Pulsed water-jet
Rock breakage
Surface and sub-surface damage
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2014 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 14 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 20 times in Scopus Article | Citations
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