SciELO - Scientific Electronic Library Online

 
vol.112 número8Some pitfalls and misuses of rock mass classification systems for mine designSimulation of time-dependent crush pillar behaviour in tabular platinum mines índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Artigo

Indicadores

    Links relacionados

    • Em processo de indexaçãoCitado por Google
    • Em processo de indexaçãoSimilares em Google

    Bookmark

    Journal of the Southern African Institute of Mining and Metallurgy

    versão impressa ISSN 0038-223X

    Resumo

    STACEY, T.R.. A philosophical view on the testing of rock support for rockburst conditions. J. S. Afr. Inst. Min. Metall. [online]. 2012, vol.112, n.8, pp. 01-08. ISSN 0038-223X.

    Physical testing of rock support for rockbursting conditions has been carried out for over 40 years. A review of this testing shows that it has been mostly component-based, rather than actually testing support systems. Further, it is concluded that none of the testing is truly representative of rockburst loading in a similitude sense. Similitude conditions are not achievable, mainly because the real conditions in a rockburst event, such as seismic source location and magnitude, wave frequencies, amplitudes, and interactions, are not all known. Because such information is not available, and because the results of all testing carried out to date have not been able to define, for support design purposes, the capacity of support systems, ongoing physical testing of rockburst support systems is essential. It is essential that the test should simulate, or actually take place in, a supported rock excavation. A rock support system is a combination of individual support components that work together to retain and contain the rock. In doing this, the components are subjected to loading by the rock and to interactive loading between one component and another. It is necessary to prove the capacity of such rockburst support systems by subjecting them to severe loading, as in direct blasting. The direct blasting approach, pioneered more than 40 years ago, probably still provides the greatest validity as a significant test of rockburst support capabilities, even though it does not simulate a rockburst. Direct blast testing of rockburst support systems in a surface environment, such as in a quarry or on exposed rock cutting surfaces, could represent a practical development of the approach, facilitating the execution and monitoring of tests.

    Palavras-chave : rockburst; rock support systems; dynamic testing.

            · texto em Inglês     · pdf em Inglês