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Stereo-photogrammetry Analysis for Over-break Control  

Kim, Byung-Ryeol (강원대학교 에너지자원.산업공학부)
Jeong, Min-Su ((주)한화)
Jin, Yeon-Ho ((주)한화)
Choi, Sung-Oong (강원대학교 에너지자원.산업공학부)
Publication Information
Explosives and Blasting / v.36, no.1, 2018 , pp. 12-19 More about this Journal
Abstract
When an underground limestone mine selects room-and-pillar mining method, in which the stability of mine openings is maintained by leaving safety pillars, the stability of safety pillars is always incompatible with their productivity. Therefore, the engineering decision for stability and productivity is essential. In this study, a progress of excavation faces by conventional blasting pattern has been examined in field for investigating over-break and stereo-photogrammetry method has been applied to this field measurement for improvement of accuracy. Also this result has been reflected instantly to composite blasting pattern by feedback, for minimizing overbreak. Field tests showed the relevant results that $3.5m^2$ in over-break out of $70m^2$ in total excavation face has been decreased, that is 5% of reduction rate in maximum.
Keywords
Room-and-pillar mining method; Productivity; Over-break; Stereo-photogrammetry method;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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