ReBop

ReBop

Itasca utilizes REBOP (Rapid Emulator Based On PFC) to simulate material drawdown within a block, panel, or sublevel cave mine by tracking the growth of draw zones (also called Isolated Movement Zones, IMZs) and corresponding fragmented rock flow associated with each drawpoint. The incremental laws governing IMZ growth and material movement in REBOP were derived on the basis of flow patterns observed in PFC3D and FLAC simulations of draw conducted by Lorig and Cundall (2000) and Pierce (2010) and in physical models conducted by a number of different researchers.

The key inputs to REBOP include fragment size distribution, initial and bulked porosity, friction angle and intact strength. The primary output from a draw analysis includes time- or tonnage-based histories of extracted ore grades and other rock properties, plots of material distribution above the drawpoints, and three-dimensional visualization of the movement and extraction zones associated with each drawpoint.

Secondary fragmentation, rilling, fines migration, and drawpoint hangups can be accounted for within REBOP simulations. The rilling logic and the ability to represent complex surface topography allow simulation of the impacts of local or large-scale failures in overlying open pit slopes or weak overburden. In addition to estimating recovery and dilution, the fragmentation exiting drawpoints can be tracked to predict hangup potential and associated drawpoint availability. In sublevel caves, the percentage of ring ore reporting to different sublevels can be tracked (i.e., primary, secondary, tertiary recovery) and tracer markers can be used to test the code against the results of in-situ marker trials.

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ReBop Updates

Latest News
  • Web licenses are now available! They are ideal for organizations with many users at different locations and/or for cloud computing....
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  • Itasca Symposium 2020 Proceedings Download the 2020 Itasca Symposium proceedings and presentations for free....
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  • Learn More About the Policies We're Updating We’re making updates to our End-User License Agreement, Website Terms of Use, and Privacy Policy....
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Upcoming Events
15 Jul
Concreep 11+ International Conference - CANCELED
Since 1956, the CONCREEP conference series has remained the key meeting for physicists, mechanicians, and engineers to present and deba... Read More
20 Jul
URTeC 2020
URTeC 2020 in Austin looks to push the boundaries and continue as the premier event focused on the latest science and technology applie... Read More
4 Aug
Deep Foundations Institute S3: Slopes, Slides and Stabilization
Technical Committees of Deep Foundations Institute (DFI) are combining their industry expertise to organize this 2.5-day conference on ... Read More
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