Authors: Jarufe, JA; Vasquez, P


Cite As:
Jarufe, JA & Vasquez, P 2013, 'Numerical modelling and rock support design in Codelco’s New Mine Level panel caving project', in Y Potvin & B Brady (eds), Proceedings of the Seventh International Symposium on Ground Support in Mining and Underground Construction, Australian Centre for Geomechanics, Perth, pp. 513-523.

Download citation as:   ris   bibtex   endnote   text   Zotero


Abstract:
The New Mine Level Project is a 130,000 tonnes per day (tpd) panel caving project set to start in 2017. The high stresses, complex structural setting and high mining rates presents a major challenge in terms of seismicity management and rockburst hazard reduction. This paper is a case study of the calculation of the energy requirements needed to design a dynamic support system. This analysis starts with the estimation of the seismic source forecasted through the use of numerical modelling and verified with observed past data, later peak particle velocity (ppv) is calculated at the drifts with a ppv attenuation model, and an amplification factor is used near the excavations. Finally, the amount of fractured rock around the drifts that could be ejected by a seismic event is calculated through numerical modelling. With the ejection velocity estimated from ppvs, energy demand can be obtained. All the values resulting from numerical analysis were compared to historical data of similar mine sectors. The results shown that the methodology used in this paper agrees well with previously observed rockburst episodes, therefore it was used to calculate the yielding support of this new deep mine project.

Keywords:

References:
Alviña, N. (2008) Analisis Numerico del comportamiento dinamico de tuneles ante eventos sismicos, caso del estallidos de roca en El Teniente, Tesis para optar al grado de Magister en Ciencias de la Ingenieria, Escuela de Ingenieria, Universidad Catolica.
Araneda, O. and Sougarret, A. (2007) Keynote Address: Lessons Learned in Cave Mining, El Teniente 1997–2007, Cave Mining, The South African Institute of Mining and Metallurgy, Cape Town, pp. 59–71.
Bacco, M. (2010) Post Evaluacion Sistemas de Fortificacion Division El Teniente, New Mine Level Project Internal Report.
Charette, F. (2012) Applicability of D-Bolt in High Stress Conditions, Health & Safety Ontario, viewed 20 March 2013, http://www.healthandsafetyontario.ca/HSO/media/WSN/Resources/WSN-2012-F-Charette-Applicability-of-D-Bolt-in-High-Stress-Conditions.pdf.
Jarufe, J. (2010) Actividad Sismica Asociada a Fallas Maestras en Sector Reservas Norte y su Aplicacion al Proyecto Nuevo Nivel Mina, New Mine Level Project, Internal Report, Nº T09E205-F1-VCPNNM-20000-INFGE04-2000-017-P.
Jarufe, J. (2008) Preentacion avances riesgo sismico Proyecto Nuevo Nivel Mina, Internal Report, New Mine Level Project.
Jarufe, J. and Bacco, M. (2011) Analisis Geomecanico De Disposicion De Niveles Para El Proyecto Nuevo Nivel Mina, New Mine Level Project, Internal Report, Nº T09E205-F1-VPNNM-00000-INFGE04-0000-002-P.
Jarufe, J. and Vasquez, P. (2008) Mine-Scale 3D Stress Model for the New Mine Level Project, El Teniente Mine, Codelco, Chile, in Proceedings First Southern Hemisphere International Rock Mechanics Symposium (SHIRMS), Y. Potvin, J. Carter, A. Dyskin and R. Jeffrey (eds), Vol. 1 – Mining and Civil, 16‒19 September 2008, Perth, Australia, Australian Centre for Geomechanics, Perth, pp. 231–242.
Jarufe, J., Potvin, Y. and Wesseloo, J. (2012) Application of the limit equilibrium strength to the seismic assessment of shear related seismicity, in Proceedings Sixth International Seminar on Deep and High Stress Mining (Deep Mining 2012), Y. Potvin (ed), 28–30 March 2012, Perth, Australia, Australian Centre for Geomechanics, Perth, pp. 389–400.
Kaiser, P.K., McCreath, D.R. and Tannant, D.D. (1996) Canadian Rockburst Support Handbook, Mirarco, Sudbury, Canada.
Milev, A.M., Spottiswoode, S.M., Noble, B.R., Linzer, L.M., van Zyl, M., Daehnke, A. and Acheampong, R. (2002) The meaningful use of peak particle velocities at excavations surfaces for the optimization of the rockburst criteria for tunnels and stopes. RASIM GAP-709, Final Project Report.
Potvin, Y. and Wesseloo, J. (2008) Findings from Seismic Data Analysis at Reno, New Mine Level Project, Internal Report.
Potvin, Y., Jarufe, J. and Wesseloo, J. (2010) Interpretation of seismic data and numerical modelling of fault reactivation at El Teniente, Reservas Norte sector, Mining Technology, Vol. 119, No. 3, 2010, pp. 175–181(7).
Rojas, E., Cavieres, P., Dunlop, R. and Gaete, S. (2000) Control of Induced Seismicity at El Teniente Mine Codelco-Chile, in Proceedings MassMin 2000, G. Chitombo (ed), 29 October – 2 November 2000, Brisbane, Australia, Australasian Institute of Mining Metallurgy, Melbourne.
Van Sint Jan, M. and Alviña, N. (2008) Ground movement amplification around underground excavations, Newsletter Australian Centre for Geomechanics, Australian Centre for Geomechanics, Perth, Australia, Vol. 31, December 2008, pp. 21–22.
Varden, R., Lachenicht, R., Player, J., Thompson, A. and Villaescusa, E. (2008) Development and Implementation of the Garford Dynamic Bolt at the Kanowna Belle Mine, in Proceedings Tenth Underground Operators Conference, 14–16 April 2008, Launceston, Australia, Australasian Institute of Mining and Metallurgy, Carlton.




© Copyright 2019, Australian Centre for Geomechanics (ACG), The University of Western Australia. All rights reserved.
Please direct any queries to or error reports to repository-acg@uwa.edu.au