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http://dx.doi.org/10.7474/TUS.2018.28.4.325

Probabilistic Evaluation of the Panel Life Time Using Steel Beam for Panel Mining in Soft Rock  

Jang, Myoung-Hwan (Mining & Geotechnical Team, Kores Resources Corporation)
Publication Information
Tunnel and Underground Space / v.28, no.4, 2018 , pp. 325-342 More about this Journal
Abstract
The ${\bigcirc}{\bigcirc}$ mines have been tried in various ways to perform secondary and tertiary mining in fragile rock properties. For such mining, the panels should be maintained while the mining compartments are divided and paneled. In this study, the mining gate between the panels was maintained by a steel beam and the panel life time was probabilistic evaluated. We used Taylor's formula for panel life time and modified the Pert distribution conceptually. The main input data were determined by the Pert distribution, and Monte Carlo simulation was performed to evaluate the panel life time for the probability distribution. As a result, it was analyzed that the panels could be stand-up time from a minimum of 6.5 days to a maximum of 20.6 days when the panel width was 18 to 25 m. At the confidence level of 90%, the panel life time was analyzed as 8.2-15.6 days. The short panel life time is not possible with the panel mining. Therefore, it was planned to construct a steel beam for panel maintenance. As result, it was analyzed that steel beam for panel maintenance with mining plan of less than 3 years according to mine could maintain panel within 90% confidence level.
Keywords
Panel; Probabilistic; Pert distribution; Monte Carlo simulation; Steel beam;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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