Hadjigeorgiou, J & Tomasone, P 2018, 'Characterising the behaviour of rockbolts based on in situ pull tests', in Y Potvin & J Jakubec (eds), Proceedings of the Fourth International Symposium on Block and Sublevel Caving
, Australian Centre for Geomechanics, Perth, pp. 727-734.
The effective use of analytical and numerical ground support design tools requires the use of reliable and representative data on the behaviour of ground support under load. In practice, such data are limited and not readily available. This paper reports on the construction of a comprehensive database of in situ rockbolt pull tests conducted in Ontario underground hard rock mines. This database includes tests on the complete range of rockbolts currently used in Ontario mines. The data were further analysed to develop practical guidelines on the pull capacity and deformation characteristics of the tested bolts.
Keywords: rockbolts, in situ pull tests, underground mines
ASTM International 2013, D4435: Standard test Method for Rock Bolt Anchor Pull Test, ASTM International, West Conshohoken.
Bobet, A 2006, ‘A simple method for analysis of point anchored rockbolts in circular tunnels in elastic ground’, Rock Mechanics and Rock Engineering, vol. 39, no. 4, pp. 315–338.
International Society for Rock Mechanics and Rock Engineering 1981, ‘Suggested methods for rock bolt testing, Part 1: Suggested method for determining the strength of a rockbolt anchor (pull test)’, in E Brown (ed.), Rock Characterization, Testing and Monitoring, Pergamon Press, Oxford, pp. 163–166.
Li, C, Stjern, G & Myrvang, A 2014, ‘A review on the performance of conventional and energy-absorbing rockbolts’, Journal of Rock Mechanics and Geotechnical Engineering, vol. 6, pp. 315–327.
Nicholson, L & Hadjigeorgiou, J 2018, ‘Interpreting the results of in situ pull tests on Friction Rock Stabilizers (FRS)’, Transactions of the Institutions of Mining and Metallurgy: Section A. Mining Technology, vol. 127, no. 1, pp. 12–25.
Simser, B, Andrieux, P, Langevin, F, Parrott, T & Turcotte, P 2007, ‘Field behaviour and failure modes of Modified Conebolts at the Craig, LaRonde and Brunswick Mines in Canada’, in Y Potvin, J Hadjigeorgiou & D Stacey (eds), Challenges in Deep and High Stress Mining, Australian Centre for Geomechanics, Perth, pp. 351–358.
Stillborg, B 1993, ‘Rockbolt tensile loading across a joint’, Proceedings of The First African Symposium on Mine Drainage and Environment Protection from Mine Waste Water Disposal, International Mine Water Association, Wendelstein,
Stjern, G 1995, Practical Performance of Rock Bolts, PhD thesis, University of Trondheim, Trondheim.
Tomory, P, Grabinsky, M, Curran, J & Carvalho, J 1998, ‘Factors influencing the effectiveness of Split Set friction stabilizer bolts’, CIM Bulletin, vol. 91, pp. 205–214.