Resumo

GUSTAFSON, A.; SCHUNNESSON, H.; TIMUSK, M.  e  HAUTA, R.. Productivity of rock reinforcement: methodology development. J. S. Afr. Inst. Min. Metall. [online]. 2016, vol.116, n.12, pp.1127-1134. ISSN 2411-9717.  http://dx.doi.org/10.17159/2411-9717/2016/v116n12a6.

The working environment for ground support installation in mines has improved during the last 20-30 years, with more mechanized equipment for installation of ground support elements such as bolts, cable bolts, and screens. Ground support installation productivity has, however, not followed the same development curve, remaining more or less constant. In some cases, for example the mechanized installation of bolts, productivity has even dropped. One reason for this is that modern mechanized bolt rigs are complex. In this paper we evaluate manual and mechanized ground support systems, propose a way to measure the productivity of bolt rigs, and make relevant comparisons between different mines and equipment. Some productivity measures for rock reinforcement are suggested, using productivity results from eight case study mines.

Palavras-chave : rock reinforcement; bolting; productivity measures; mechanization; underground mining.

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