Pillar Design

Itasca has developed unique and robust approaches to pillar design that recognizes the importance of understanding the rock behavior from intact rock and bedding to joints and faults. Itasca’s software can model the stress-strain response of continuous, blocky, or bedded materials exhibiting plastic, brittle, or creep behaviors. Consequently, any combination of lithology comprising the pillar-floor-roof system can be analyzed. This includes reproducing the complex combination of pillar sloughing (rib rash) and floor heave experienced at different extraction levels and vertical stress levels throughout a mine. Information derived from these pillar-scale models forms an essential input to larger-scale models, which have been used extensively for design of individual panels (width, remnant stub width, and extraction ratio) as well as barrier pillars, and the overall mine layout and extraction ratio. These larger-scale models have been validated through successful back-prediction of the timing and nature of large-scale catastrophic collapses experienced in the region.

Latest News
  • 2019 Sloan Outstanding Paper Award Dr. Mojtaba Bahaaddini (Shahid Bahonar University of Kerman), along with Associate Professor Glenn Sharrock (Itasca/UQ),...
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  • Itasca Awarded Prestigious Caving 2040 Research Grant Itasca’s research aims to answer the key industry question “how should block caves be designed...
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  • InSite V3.15 Now Available! Itasca Consulting Ltd (ICL) is pleased to announce the latest release of the InSite family...
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Upcoming Events
26 Jun
Discrete element modelling of dam foundations
Learn about modeling dam foundations using the discrete element method with UDEC and 3DEC software in the 26th ISRM Online Lecture.... Read More
1 Oct
FLAC3D 7.0 Introductory training course
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14 Oct
Focused Seismic and Liquefaction Training 2019
Itasca is offering a focused training session with instruction by experienced engineering consultants, hands-on modeling exercises, and... Read More