1-4 of 4
Keywords: height ratio
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-233
... Abstract The Cohesion Weakening Friction Strengthening (CWFS) is adopted in numerical analysis to capture the observed progressive failure of hard rock pillars. As a case study, pillars at the Elliot Lake mines with width to height ratios of 0.5 to 3 were analyzed in FLAC3D. Pillars with width...
Proceedings Papers

Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-173
... conventional design of pillars was employed by the operators. This approach to design has proved to be reasonably effective in relatively shallow depths, but it has led to pillars of increasingly larger width to height ratios as the depth of mining increased. Experience has shown that this approach is often...
Proceedings Papers

Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-045
... is conducted between 900m and 1650m below surface. inter-pillar span height ratio Reservoir Characterization internal anglogold report metals & mining support strategy ave std dev fog dim pillar layout span determination mid-panel pillar Thickness database crush pillar geotechnical...
Proceedings Papers

Paper presented at the 7th ISRM Congress, September 16–20, 1991
Paper Number: ISRM-7CONGRESS-1991-214
... are present in the roof then a significant increase in load is possible. The strength of barrier pillars was further investigated using three-dimensional numerical models and by studying actual collapsed cases. It was found that if the width to height ratio is 4.0 the strength of long rectangular pillars...

Product(s) added to cart

Close Modal