The cuttability of rock using a high pressure water jet Hagan, Paul en_US 2021-11-25T13:42:21Z 2021-11-25T13:42:21Z 1992 en_US
dc.description.abstract Methods of improvement in the performance of mechanical rock cutting systems are continually being sought. One area being investigated is combining mechanical rock cutting tools with water jets. In this ‘hybrid’ arrangement, the mass breakage mechanism of a rolling disc cutter or drag pick is coupled with the concentrated energy medium of a high pressure water jet. Research has indicated that the resultant improvements in performance of mechanical cutting tools could be due to the cutting of the rock surface through fracture and erosion thereby ameliorating the rock breakage process of the mechanical cutting tool. Damage by a water jet has been observed even in rock of high strength. This paper outlines a study on the sole use of water jets in cutting rock and the effects of changes in the principal variables of a water jet. An understanding of the characteristics and the relative importance of any changes in these variables is necessary to optimise the cutting performance of a hybrid system in terms of advance rate and energy expenditure. The variables considered in the study included nozzle diameter, water pressure, traversing speed and multiple passes of a water jet. Within the range of values studied for each variable, a change in water pressure was found to have the greatest impact on the level of surface damage in rock. Traversing speed, and to a lesser extent nozzle diameter, were also found to alter the magnitude of surface damage in rock. en_US
dc.language English
dc.language.iso EN en_US
dc.rights CC BY-NC-ND 3.0 en_US
dc.rights.uri en_US
dc.source Legacy MARC en_US
dc.subject.other rock cutting en_US
dc.subject.other water jet en_US
dc.subject.other high pressure water jet en_US
dc.title The cuttability of rock using a high pressure water jet en_US
dc.type Conference Paper en
dcterms.accessRights metadata only access
dspace.entity.type Publication en_US
unsw.relation.faculty Engineering
unsw.relation.ispartofconferenceLocation Kalgoorlie, Australia en_US
unsw.relation.ispartofconferenceName Proceedings of Western Australia Conference on Mining Geomechanics en_US
unsw.relation.originalPublicationAffiliation Hagan, Paul, Mining Engineering, Faculty of Engineering, UNSW en_US School of Minerals and Energy Resources Engineering *
Resource type