Abstract
At the previous MassMin conference held in Sudbury in 2012, the authors proposed a new framework going beyond dilution and equivalent linear overbreak sloughing (ELOS) for stope reconciliation in relation to the planned stope design. More specifically, the new process investigates performance outcomes including rock overbreak OB and fill overbreak FOB, rock
underbreak (UB) as well as geomechanical and operational aspects such as blasting, fragmentation and other production data. Based on the findings of the original 2012 study, a comprehensive data gathering program has
been undertaken involving design and reconciliation data from 43 stopes mined between September 2012 and October 2014 at BHP Billiton’s Olympic Dam (OD) operation. The new database structure was based on four types of data:
1. stope definition and performance data
2. stope geometry
3. geotechnical parameters
4. operational parameters.
The new database allows a more in-depth investigation of stope performance. It is now possible to quantify and analyse UB and OB performance from each wall individually as well as the crown. In this paper, the infuence of several parameters on recent stope performance at OD is analysed. The underlying reasons for stope wall performance outcomes are discussed in this paper.
underbreak (UB) as well as geomechanical and operational aspects such as blasting, fragmentation and other production data. Based on the findings of the original 2012 study, a comprehensive data gathering program has
been undertaken involving design and reconciliation data from 43 stopes mined between September 2012 and October 2014 at BHP Billiton’s Olympic Dam (OD) operation. The new database structure was based on four types of data:
1. stope definition and performance data
2. stope geometry
3. geotechnical parameters
4. operational parameters.
The new database allows a more in-depth investigation of stope performance. It is now possible to quantify and analyse UB and OB performance from each wall individually as well as the crown. In this paper, the infuence of several parameters on recent stope performance at OD is analysed. The underlying reasons for stope wall performance outcomes are discussed in this paper.
| Original language | English |
|---|---|
| Title of host publication | Seventh International Conference & Exhibition on Mass Mining (MassMin 2016) |
| Editors | Chris Carr, Gideon Chitomobo |
| Publisher | Australasian Institute of Mining and Metallurgy |
| Pages | 501-509 |
| Number of pages | 9 |
| Publication status | Published - 2016 |
| Event | 7th International Conference & Exhibition on Mass Mining (MassMin 2016), 9-11 May 2016, Sydney, New South Wales, Australia - Sydney, Australia Duration: 9 May 2016 → 11 May 2016 |
Conference
| Conference | 7th International Conference & Exhibition on Mass Mining (MassMin 2016), 9-11 May 2016, Sydney, New South Wales, Australia |
|---|---|
| Country/Territory | Australia |
| City | Sydney |
| Period | 9/05/16 → 11/05/16 |