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
  • Itasca Symposium 2020 Technical Papers and Statistics ...
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  • Itasca Symposium 2020 - Registration Now Open! Registration is now open for the Fifth International Itasca Symposium....
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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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Upcoming Events
21 Oct
70th Highway Geology Symposium 2019
The upcoming 70th annual Highway Geology Symposium will be held in Portland, Oregon, October 21st through October 24th, 2019.... Read More
23 Oct
Ground Support 2019
Ninth International Symposium on Ground Support in Mining and Underground Construction... Read More
26 Nov
FLAC3D V7.0 Training Course November 2019
FLAC3D TMis a numerical modeling code for advanced geotechnical analysis of soil, rock, and structural support in three dimensions. FLA... Read More