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 - Registration Now Open! Registration is now open for the Fifth International Itasca Symposium....
    Read More
  • 2019 Sloan Outstanding Paper Award Dr. Mojtaba Bahaaddini (Shahid Bahonar University of Kerman), along with Associate Professor Glenn Sharrock (Itasca/UQ),...
    Read More
  • Itasca Awarded Prestigious Caving 2040 Research Grant Itasca’s research aims to answer the key industry question “how should block caves be designed...
    Read More

Upcoming Events
24 Sep
Seminar: Modeling of Masonry Structures
... Read More
1 Oct
FLAC3D 7.0 Introductory training course
... Read More
8 Oct
SME Twin Cities Annual Conference
... Read More