Application Type
Patents
Application SubType
PCT
(10) Registration Number and Date
Status
Abandoned-Abandoned
(180) Expiration Date
(20) Filing Number and Date
PG P/2022/000028 2021.03.19
(40) Publication Number and Date
(86) PCT Filing Number and Date
(87) PCT Publication Number and Date
(85) National Entry Date
(30) Priority Details
AU 2020900842
2020.03.19
(51) IPC Classes
(71/73) Applicant
(72) Inventor
(EN) NEWCOMBE, Geoff : C/- Newcrest Mining Limited, Level 8, 600 St Kilda Road, Melbourne, Victoria 3004 (AU)
(EN) PAREDES, Pablo : C/- Newcrest Mining Limited, Level 8, 600 St Kilda Road, Melbourne, Victoria 3004 (AU)
(EN) POPA, Luca : C/- Newcrest Mining Limited, Level 8, 600 St Kilda Road, Melbourne, Victoria 3004 (AU)
(EN) SYKES, Michael : C/- Newcrest Mining Limited, Level 8, 600 St Kilda Road, Melbourne, Victoria 3004 (AU)
(74) Representative Name
(EN) VAI IP LIMITED : PO Box 27, Konedobu, National Capital District
(54) Title
(EN) MINING METHOD
(57) Abstract
(EN) --
A block cave has a draw column height of at least 450 m, a caved volume, a single extraction level and noundercut level, a plurality of drawbells extending upwardly from the extraction level to the caved volume, and a plurality of pillars separating the drawbells and supporting the rock mass above the extraction level. Each drawbell has a drawbell height of at least 25 m. Each drawbell has the following profile when viewed from a direction perpendicular to a drawbell drive in the extraction level: a throat section having opposed parallel side walls extending upwardly from the extraction level, a tapered section above the throat section, and an undercut section above the tapered section.
(58) Citations