Abstract
Pillar is a part of the deposition of excavated material that is left behind to sustain the rock weight above it. The aim of this study was to determine the effect of height and diameter ratio on the strength of the pillar obtained from uniaxial compressive strength testing and numerical modeling. Laboratory test results showed that pillars with a ratio of 1.5 H/D did not show an increase in strength of 1.83%, while pillars with a ratio of 1 H/D gave a more significant increase in strength, which was 32.99%. The numerical modeling simulation with RS2 9.0 software showed that the strength factor values for pillars with an H/D ratio of 1.5, 2 and 1 having values below 1 at the same pressure as laboratory test results. Therefore, the most appropriate pillar design used in underground mining using the room and pillars method was a pillar with a ratio of H/D = 1.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
