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
  • Meet Itasca France at AFTES 2021 in Paris! Itasca Consultants will be present at the next AFTES Congress entitled "The underground, a space...
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  • Got Old Software? Itasca's latest versions offer many new features and are optimized to run faster on today's...
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  • Itasca Celebrates 40 Years Itasca is celebrating 40 years of solving geomechanical and hydrogeological challenges through engineering and computer...
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Upcoming Events
21 Sep
EUROCK 2021
The Italian Geotechnical Society (AGI), on appointment by the ISRM International Society of Rock Mechanics, is delighted to announce t... Read More
6 Aug
Itasca Training Collaborations
These quality courses are offered by people outside of Itasca.... Read More