Authors: Brändle, R; Fonseca, RL; Hangartner, T


DOI https://doi.org/10.36487/ACG_rep/1952_12_Brandle

Cite As:
Brändle, R, Fonseca, RL & Hangartner, T 2019, 'Large scale testing of surface support', in W Joughin (ed.), Proceedings of the Ninth International Conference on Deep and High Stress Mining, The Southern African Institute of Mining and Metallurgy, Johannesburg, pp. 149-160, https://doi.org/10.36487/ACG_rep/1952_12_Brandle

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Abstract:
Ground support for dynamic conditions must be able to withstand the associated loads and deformations and the support scheme must work as a system. In order to prove the suitability of such support systems with high-tensile steel mesh and bolts, and also to analyse their bearing behaviour, a large-scale test setup was commissioned in Walenstadt, Switzerland. On this test rig, it was possible to apply large energies on variable ground support schemes with variable bolt patterns and meshes with a total support area of 3.6 m x 3.6 m. The test site is instrumented by load cells, high-speed video analysis and accelerometers. In this paper the analysis of the load cells, the accelerometers and the high-speed video cameras is given, and results are discussed. It could be shown that a combination of high-tensile steel mesh with a specific bolt pattern can result in high energy capacity surface support. Distribution of the impact loads during the stoping process to the different elements of the bearing support system depends on the strength and flexibility of the mesh and the bolts resistance and his pattern.

References:
Bucher, R., Cala, M., Zimmermann, A., Balg, C. and Roth, A. (2013). Large scale field tests of high‐tensile steel wire mesh in combination with dynamic rock bolts subjected to rock burst loading, 7th International Symposium on Ground Support in Mining and Underground Construction, Perth, 13–15 May
Luis Fonseca, R., Laguna L., and Muñoz, B. (2009). Comparative analysis of the mechanical properties of the steel membranes for slope stabilization, VII National Symposium on Unstable Hills and Slopes. Barcelona. Spain.
Player, J., Villaescusa, E. and Thompson, A. (2004). Dynamic testing of rock reinforcement using the momentum transfer concept, Ground Support Symposium, Perth, Australia, pp. 327-339.
Player J., Morton E., Thompson A. & Villaescusa E. (2008). Static and dynamic testing of steel wire mesh for mining applications of rock surface support, The Sixth International Symposium on Ground Support in Mining and Civil Engineering Construction, Cape Town, South Africa, pp. 693-706.
Roth, A. (2013). Testing and Numerical Modeling of High-tensile Steel Wire Mesh for Ground Support under Dynamic Loading, MSc thesis, Western Australian School of Mines, Curtin University, pp. 24-64.
Saner, A., and Murri, R. (2016). Testing of the Rockburst Codelco Setup S3-S5, Report No. Psi-16-1231, DTC, Vauffelin/ Biel, Switzerland.
Thompson, A., Player, J. and Villaescusa, E. (2004). Simulation and analysis of dynamically loaded reinforcement systems, Ground Support Symposium, Perth, Australia, pp. 341-355.
Villaescusa, E., Azua, J.M., Player, J.R., Thompson, A.G. and Morton, E. (2012). A database of static and dynamic energy absorption of mesh for rock support, CRC Mining, Western Australian School of Mines, Curtin University, pp. 1-8.




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