Fischer, G, Ruiz-Tagle, J, Bucher, R & Luis, R 2017, 'Ground support installations, using a mechanised unroller and flexible high-tensile strength chain link mesh', in J Wesseloo (ed.), Deep Mining 2017: Proceedings of the Eighth International Conference on Deep and High Stress Mining
, Australian Centre for Geomechanics, Perth, pp. 773-784, https://doi.org/10.36487/ACG_rep/1704_53_Bucher
Traditional support and reinforcement systems used in underground mining are limited in their capacity under dynamic loading. Static and dynamic tests carried out by the Western Australian School of Mines have shown that high-tensile chain link mesh has much higher capacity under dynamic loading. Therefore, the high-tensile steel wire (min 1,770 MPa) and the flexibility of the chain link mesh, makes this a support system to be applied in areas with very high static and dynamic expected loading. Historically, ground support processes were done manually. A device has been developed that is mounted on one of the booms of a jumbo and/or bolting machine, which will allow a more efficient installation of the support systems. This unroller device is compatible and retro-fittable with most multiple boom drill jumbo’s and allows installation of rhomboidal high-tensile steel chain link mesh from rolls. While the one boom on the bolter is fitted with a drilling and bolting device, the mesh can be installed using the other arm. This innovative and mechanised installation of chain link mesh provides an increase in miners’ safety and improves production performance of the mine. This paper referred to two examples of automated application of meshes mesh installation trials performed at El Teniente mine (Chile) and Goldfields South Deep mine (South Africa).
Keywords: sustainability, high-tensile steel chain link mesh, automation, performance, roof support
Luis Fonseca, R, Laguna, L & Muñoz, B 2009, ‘Comparative analysis of the mechanical properties of the steel membranes used in the slope stabilization’, VII National Symposium on Unstable Hills and Slopes, Barcelona, Spain.
Morton, E, Thompson, A, Villaescusa, E & Roth, A, 2007, ‘Testing and analysis of steel wire mesh for mining applications of rock surface support’, Proceedings of the 11th International Congress on Rock Mechanics, International Society for Rock Mechanics, Lisboa.
Player, JR, Villaescusa, E & Thompson, AG 2004, ‘Dynamic testing of rock reinforcement using the momentum transfer concept’, in E Villaescusa & Y Potvin (eds), Proceedings of the Fifth International Symposium on Ground Support, 28–30 September 2004, Perth, CRC Press.
Player, JR, Thompson, AG & Villaescusa, E 2008, ‘Dynamic testing of reinforcement systems’, Proceedings of the Sixth International Symposium on Ground Support, 30 March–3 April 2008, Cape Town, The Southern African Institute of Mining and Metallurgy, Johannesberg.
Roth, A, Windsor, C, Coxon, J & de Vries, R 2004, ‘Performance assessment of high-tensile steel wire mesh for ground support under seismic conditions’, in E Villaescusa & Y Potvin (eds), Proceedings of the Fifth International Symposium on Ground Support, 28–30 September 2004, Perth, CRC Press, pp. 589–594.
Salfa Montajes 2015, Fortificación mecanizada equipo Boltec MC, El Teniente, Chile.
Thompson, AG, Player, JR, & Villaescusa, E 2004, ‘Simulation and analysis of dynamically loaded reinforcement systems’, in E Villaescusa & Y Potvin (eds), Proceedings of the Fifth International Symposium on Ground Support, 28–30 September 2004, Perth, CRC Press, pp. 341–355.
Tonkin, CJ, 2011, Time and motion study of sheeted wire meshing and rolled wire meshing systems, Goldfields South Deep, South Africa.
Unican 2002, High tensile wires mesh characterization, Santander, Spain.
Villaescusa, E 2009, ‘Dynamic testing of ground support elements’, M349A Quarterly Progress Report March 2009, Western Australian School of Mines, Kalgoorlie.