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Keywords: support element
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Proceedings Papers

Paper presented at the ISRM International Symposium, September 10–12, 1990
Paper Number: ISRM-IS-1990-034
..., was therefore adopted. This involved the measurement of the rock structure, and, from these data, the assessment of the probability of Occurrence of potentially unstable blocks of rock in the walls of passes. This allowed the determination of the required spacing of support elements to reduce the probability...

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