Authors: Knox, G; Berghorst, A; de Bruin, P

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Knox, G, Berghorst, A & de Bruin, P 2018, 'An empirical comparison between new and existing laboratory-based dynamic sample configurations', in Y Potvin & J Jakubec (eds), Caving 2018: Proceedings of the Fourth International Symposium on Block and Sublevel Caving, Australian Centre for Geomechanics, Perth, pp. 747-758,

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Laboratory-based dynamic testing allows rockbolt developers to apply impulses of energy to a rockbolt in order to approximate some loading aspects that the rockbolt would experience during a rockburst in an underground mine. This data can be used to compare a rockbolt’s dynamic performance providing geotechnical engineers with useful information for designing their required ground support system. There are two general sample configurations commonly used in this type of dynamic testing – split-tube test and continuous-tube test. This paper summarises a proposed third configuration – a multisplittube test.

Keywords: ground support, laboratory testing, rockburst, dynamic, fractured ground

ASTM International 2008, ASTM D7401-08: Standard Test Methods for Laboratory Determination of Rock Anchor Capacities by Pull and Drop Tests, ASTM International, West Conshocken.
Knox, G & Berghorst, A 2018a, ‘Increased agility for the research and development of dynamic roof support products’, in CC Li, X Li & Z-X Zhang (eds), Proceedings of the Third International Conference on Rock Dynamics and Applications, CRC Press, Boca Raton.
Knox, G & Berghorst, A 2018b, ‘Proposed new multiple split tube testing method for dynamic ground support used in highly fractured ground’, presentation, CIM 2018 Convention, Canadian Institute of Mining, Metallurgy and Petroleum, Westmount.

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