Guide to open pit geotechnical considerations HIF audit 2009 September 2009 Level 1, 303 Sevenoaks Street (cnr Grose Ave), Cannington WA 6107 Postal address: Mineral House, 100 Plain Street, East Perth WA 6004 Telephone: (08) 9358 8002 Facsimile: (08) 9358 8000
[email protected] www.dmp.wa.gov.au wa.gov.au Contents Introduction .................................................................................................................. 2 1 Mine planning and design ..................................................................................... 3 2 General operational issues ................................................................................... 8 3 Drill and blast........................................................................................................ 13 4 Rock reinforcement.............................................................................................. 15 5 Quality control and monitoring ........................................................................... 17 6 Design confirmation / back analysis .................................................................. 19 7 Training and competency .................................................................................... 21 Introduction The scope of this audit is designed to cover the standards associated with the safe development, operation and closure of open pit operations from a geotechnical perspective. Where site specific circumstances do not warrant an in depth ground control management plan e.g. shallow 2-month life mine with one material type, then the mine should have a formal geotechnical statement that justifi