Authors: Rispin, M; Howard, D; Kleven, OB; Garshol, K; Gelson, J


Cite As:
Rispin, M, Howard, D, Kleven, OB, Garshol, K & Gelson, J 2009, 'Safer, deeper, faster: sprayed concrete — an integral component of development mining', in PM Dight (ed.), Proceedings of the First International Seminar on Safe and Rapid Development Mining, Australian Centre for Geomechanics, Perth, pp. 69-80.

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Abstract:
It is a fact that underground mine workings are going deeper in the quest for ore reserves. This carries with it the need to develop workings under increasingly challenging environments with unprecedented economic and business pressures in the face of rising costs and high demand expectations. While sprayed concrete (wet shotcrete) has established itself globally over the last 15 years as a preferred means of ground support, there are still significant opportunities for greater penetration from this versatile and effective ground support medium. It not only allows more rapid and safe development but further offers downstream benefits in the form of longevity, effectiveness and reduced rehabilitation requirements. Stepwise improvements in the form of mix designs, admixtures and accelerators, equipment and expertise have yielded benefits in the form of early re-entry, logistics optimisation and effectiveness of application. Sprayed concrete has also proven itself as an attractive component of support systems in ductile environments. This paper will cover the requirements of a successful sprayed concrete program from a holistic approach; reference a suitable case study, emphasising the contribution to safe and rapid development; and discuss current pertinent benefits and challenges for its use in the global mining industry in the 21st century.

References:
Bernard, E.S. (2007) Early-age load resistance of fibre reinforced shotcrete linings, Tunnelling and Underground Space
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