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 Our Summer Interns Itasca is pleased to welcome three graduate student summer interns to Minneapolis. They will be...
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  • New Itascans Itasca welcomes Amanda Schendel and Luis Wasserman to our team....
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  • A Celebration of 40+ Years Itasca celebrated its 40th anniversary in May, marking four decades of discovery, service, and family....
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Upcoming Events
26 Jun
ARMA 56th US Rock Mechanics / Geomechanics Symposium
The 56th US Rock Mechanics / Geomechanics Symposium covers all aspects of rock mechanics, geomechanics, and rock engineering. ... Read More
29 Jun
3rd International Discrete Fracture Network Engineering (DFNE) Conference
The third International Conference on Discrete Fracture Network Engineering (DFNE 2022) present the important advances that have occurr... Read More
16 Aug
RockEng 2022
The theme of RockEng22 is Canadian Strengths and Future Directions in Rock Mechanics.... Read More