Potvin, Y 2009, 'Surface support in extreme ground conditions — HEA Mesh™', in PM Dight (ed.), Proceedings of the First International Seminar on Safe and Rapid Development Mining
, Australian Centre for Geomechanics, Perth, pp. 111-119.
Development in high stress environments can lead to severe conditions. In particular, when the rock mass is
brittle, or when mining progresses near seismically active geological structures, rockbursts can become a
serious hazard. At the other end of the spectrum, when the rock mass is weak and ductile, squeezing ground
and high convergence become the challenge that must be managed during and after development mining.
The ground support industry has been very active in developing reinforcement solutions to these challenges,
in particular in addressing the rockburst problem. However, the options for high energy absorption surface
support remains very limited. The South African deep level gold and platinum mines are successfully using
cable lacing, but this option is not practical in mechanised mining. In countries using mechanised mining,
the solution to the severe ground conditions to date has been to use a combination of fibre reinforced
shotcrete (FRS), mesh, or mesh straps.
In this paper, a new high energy absorption mesh is proposed. This mesh can be mechanically installed
using a jumbo and can sustain high deformation and high strength.
Heal, D., Potvin, Y. and Hudyma, M. (2006) Evaluating rockburst damage potential in underground mining,
Proceedings of the American Rock Mechanics Association (ARMA) 41st U.S. Rock Mechanics Symposium
(USRMS): “50 Years of Rock Mechanics — Landmarks and Future Challenges”, Golden, Colorado, Canada,
June, Paper no. 1020, CD format only, 12 p.
Potvin, Y. and Hadjigeorgiou, J. (2008) Main finding of the squeezing ground task force, Unpublished Australian
Centre for Geomechanics report, May 2008.
Stillborg, B. (1994) Professionals Users Handbook for Rock Bolting, Second Edition, Trans Tech Publications,
Germany, 164 p.
Tannant, D.D. (2004) Load capacity and stiffness of welded wire, chain link, and expanded metal mesh. Surface
Support in Mining, Australian Centre for Geomechanics, Y. Potvin, T.R. Stacey and J. Hadjigeorgiou (eds),
Perth, Australia, pp. 399–402.
Thompson, A.G. (2004) Rock support action of mesh quantified by testing and analysis. Surface Support in Mining,
Australian Centre for Geomechanics, Y. Potvin, T.R. Stacey and J. Hadjigeorgiou (eds), Perth, Australia.
Tyler, D.B. and Werner, M. (2004) A case study of ground support improvement at Perseverance Mine, Ground
Support in Mining and Underground Construction, E. Villaescusa and Y. Potvin (eds), Taylor and Francis
Group, London, pp. 53–63.
Surface support in extreme ground conditions — HEA Mesh™ Y. Potvin
120 SRDM 2009, Perth, Australia