Fig. 1. Irregular shape of pillars produced by selective mining (from Okubo and Yamatomi, 2009)
Fig. 2. Examples of rockfall and mine collapse (from NIOSH, 2011, CDC, 2019)
Fig. 3. Guidelines for mine tunnel design in Australia (from MCA, 2003)
Fig. 4. Guidelines for mine tunnel design in United States (from NIOSH, 2011)
Table 1. Guidelines related to mine tunnel design in Korea
Table 2. Guidelines related to mine tunnel design in Australia and United States
참고문헌
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