Authors: Tierney, SR; Woodward, KR; Wesseloo, J

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Tierney, SR, Woodward, KR & Wesseloo, J 2019, 'Seismic exclusions and re-entry from a risk perspective', in J Wesseloo (ed.), MGR 2019: Proceedings of the First International Conference on Mining Geomechanical Risk, Australian Centre for Geomechanics, Perth, pp. 181-194,

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Exposure to seismic hazard in mines is controlled through various evacuation, exclusion and re-entry procedures. The aim of exposure management procedures is to tactically reduce the safety risk by removing personnel from work areas during periods of elevated seismic hazard. Given that risk assessment is based on exposure, the design of exposure management procedures must also be risk-based. In practice, the decision to re-enter a workplace after an exclusion is generally only made based on an assessment of the seismic hazard, often using previously defined levels of tolerable seismic activity rates. The definition of tolerable seismic hazard, in the context of re-entry, is seldom quantitatively assessed based on risk. In order to move towards a comprehensive seismic risk management strategy, design methodologies must be able to quantify the impact of different exclusion and re-entry practices on risk. The appropriate reentry practice can then be selected given the defined risk-based design acceptance criteria. There is still a long way to go before the risk-based design framework for exposure management procedures is complete. This paper reviews the current state of design of exposure management controls in the context of risk and discusses several important areas for further research.

Keywords: seismicity, risk-based design, exposure, exclusions, re-entry, seismic hazard

Alcott, J, Kaiser, P & Simser, B 1998, ‘Use of microseismic source parameters for rockburst hazard assessment’, Pure and Applied Geophysics, vol. 153, pp. 41–65.
Anderson, M & Denkl, M 2010, ‘The Heinrich accident triangle - too simplistic a model for HSE management in the 21st century?’, Proceedings of the SPE International Conference on Health, Safety and Environment in Oil and Gas Exploration and Production, Society of Petroleum Engineers, Richardson, pp. 1062–1069.
Bohnenblust, H 1998, ‘Risk-based decision making in the transportation sector’, in RE Jorissen & PJM Stallen (eds), Quantified Societal Risk and Policy Making, Springer, Basel.
Cohen, J 2015, Managing Workplace Health and Safety, viewed 15 May 2015,
Finlay, P & Fell, R 1997, ‘Landslides: risk perception and acceptance’, Canadian Geotechnical Journal, vol. 34, no. 2, pp. 169–188.
Gallivan, S, Taxis, K, Franklin, B & Barber, N 2008, ‘Is the principle of a stable Heinrich ratio a myth?’, Drug Safety, vol. 31, no. 8,
pp. 1–6.
Goebel, T, Becker, T, Schorlemmer, D, Stanchits, S, Sammis, C, Rybacki, E & Dresen, G 2012, ‘Identifying fault heterogeneity through mapping spatial anomalies in acoustic emission statistics’, Journal of Geophysical Research: Solid Earth, vol. 117, no. B3.
Gulia, L, Tormann, T, Wiemer, S, Herrmann, M & Seif, S 2016, ‘Short‐term probabilistic earthquake risk assessment considering timedependent b values’, Geophysical Research Letters, vol. 43, no. 3, pp. 1100–1108.
Heal, D, Hudyma, M & Vezina, F 2005, ‘Seismic hazard at Agnico-Eagle's Laronde mine using MS-RAP’, in JA Sag & S Tessier (eds), Proceedings of the CIM Maintenance Engineering and Mine Operators Conference 2005, Canadian Institute of Mining, Sudbury.
Higson, D 1989, Risks to Individuals in NSW and in Australia as a Whole, Nuclear Safety Bureau, Yallambie.
Jonkman, S, van Gelder, P & Vrijling, J 2003, ‘An overview of quantitative risk measures for loss of life and economic damage’, Journal of Hazardous Materials, vol. 99, no. 1, pp. 1–30.
Joughin, N 2011, ‘Engineering considerations in the tolerability of risk’, The Journal of the Southern African Institute of Mining and Metallurgy, vol. 111, pp. 535–540.
Joughin, W, Jager, A, Nezomba, E & Rwodzi, L 2012, ‘A risk evaluation model for support design in Bushveld Complex underground mines: Part 1 - Description of the model’, The Journal of the Southern African Institute of Mining and Metallurgy, vol. 112,
pp. 83–94.
Joughin, W, Muaka, J, Mpunzi, P, Sewnun, D & Wesseloo, J 2016, ‘A risk-based approach to ground support design’, in E Nordlund, T Jones & A Eitzenberger (eds), Proceedings of the Eighth International Symposium on Ground Support in Mining and Underground Construction, Luleå University of Technology, Luleå.
Kijko, A 2011, ‘Seismic hazard’, in H Gupta (ed.), Encyclopedia of Solid Earth Geophysics, Springer, Basel.
Kirsch, P, Harris, J, Shi, M & Cliff, D 2014, ‘Reflections on mining and mortality’, Australian Resources and Investment, vol. 8, no. 3, pp. 64–68.
Kun, F, Varga, I, Lennartz-Sassinek, S & Main, I 2013, ‘Approach to failure in porous granular materials under compression’, Physical Review E, vol. 88, no. 6.
Main, I 1996, ‘Statistical physics, seismogenesis, and seismic hazard’, Reviews of Geophysics, vol. 34, no. 4, pp. 433–462.
Manuele, F 2011, ‘Reviewing Heinrich - dislodging two myths from the practice of safety’, Professional Safety, October 2011,
pp. 52–61.
Melchers, R 2001, ‘On the ALARP approach to risk management’, Reliability Engineering & System Safety, vol. 71, no. 2, pp. 201–208.
Meredith, P, Main, I & Jones, C 1990, ‘Temporal variations in seismicity during quasi-static and dynamic rock failure’, Tectonophysics, vol. 175, no. 1–3, pp. 249–268.
pp. 105–116.
in J Wesseloo (ed.), Proceedings of the Eighth International Conference on Deep and High Stress Mining, Australian Centre for Geomechanics, Perth, pp. 173–181.
Ogata, Y 1988, ‘Statistical models for earthquake occurrences and residual analysis for point processes’, Journal of the American Statistical Association, vol. 83, no. 401, pp. 9–27.
Owen, M 2004, Exposure Model - Detailed Profiling and Quantification of the Exposure of Personnel to Geotechnical Hazards in Underground Mines, PhD thesis, The University of Western Australia, Perth.
Penney, A & Hills, P 2013, ‘Development of seismic heading re-entry and exclusion zones at the Tasmania mine’, in A Malovichko & D Malovichko (eds), Proceedings of the Eighth International Symposium on Rockbursts and Seismicity in Mines, Geophysical Survey of Russian Academy of Sciences, Obninsk, and Mining Institute of Ural Branch of Russian Academy of Sciences, Perm, pp. 447–459.
Poplawski, R 1997, ‘Seismic source parameters and rockburst hazard at Mt. Charlotte Mine’, International Journal of Rock Mechanics and Mining Sciences, vol. 34, pp. 1213–1228.
Potvin, Y, Wesseloo, J, Woodward, K, Morkel, I & Tierney, S 2018, Seismic Risk Management Practices in Underground Mines, viewed 3 December 2018,
Safe Work Australia 2016, ‘Work-related traumatic injury fatalities’, Comparative Performance Monitoring Report, 18th edn, Australia, Safe Work Australia, Canberra.
Schorlemmer, D, Wiemer, S & Wyss, M 2005, ‘Variations in earthquake-size distribution across different stress regimes’, Nature, vol. 437, no. 7058, pp. 539.
Sherratt, F 2014, ‘Exploring ‘zero target’ safety programmes in the UK construction industry’, Construction Management and Economics, vol. 32, no. 7–8, pp. 737–748.
Stacey, T, Terbrugge, P & Wesseloo, J 2007, ‘Risk as a rock engineering design criterion’, in Y Potvin, T Stacey & J Hadjigeorgiou (eds), Challenges in Deep and High Stress Mining, Australian Centre for Geomechanics, Perth, pp. 19–26.
Talbot, J 2014, ALARP (As Low As Reasonably Practicable), Jakeman Business Solutions, Symonston.
Terbrugge, P, Wesseloo, J, Venter, J & Steffen, O 2006, ‘A risk consequence approach to open pit slope design’, The Journal of the Southern African Institute of Mining and Metallurgy, vol. 106, pp. 503–514.
Tormann, T, Enescu, B, Woessner, J & Wiemer, S 2015, ‘Randomness of megathrust earthquakes implied by rapid stress recovery after the Japan earthquake’, Nature Geoscience, vol. 8, no. 2, pp. 152.
Utsu, T 1961, ‘A statistical study of the occurrence of aftershocks’, Geophysical Magazine, vol. 30, no. 4.
Vallejos, J & McKinnon, S 2009, ‘Re-entry protocols for seismically active mines using statistical analysis of aftershock sequences’, in M Diederichs & G Grasselli (eds), Proceedings of the Third CANUS Rock Mechanics Symposium, Canadian Rock Mechanics Association, p. 143.
van Aswegen, G & Butler, A 1993, ‘Application of quantitative seismology in SA gold mines’, in R Young (ed.), Proceedings of the Third International Symposium on Rockbursts and Seismicity in Mines, A.A. Balkema, Rotterdam, pp. 261–266.
Vrijling, J, van Hengel, W & Houben, R 1995, ‘A framework for risk evaluation’, Journal of Hazardous Materials, vol. 43, pp. 245–261.
Vrijling, J, van Hengel, W & Houben, R 1998, ‘Acceptable risk as a basis for design’, Reliability Engineering and System Safety, vol. 59, pp. 141–150.
Wentzel, N, Pooley, T & Sheriff, B 2012, ‘Is there harm in zero?’, Proceedings of the SPE Asia Pacific Oil & Gas Conference and Exhibition 2012, vol. 1, Society of Petroleum Engineers, Richardson.
Wesseloo, J & Joughin, W 2019, internal document, Australian Centre for Geomechanics, Perth.
Woodward, KR 2015, Identification and Delineation of Mining Induced Seismic Responses, PhD thesis, The University of Western Australia, Perth.
Woodward, KR & Wesseloo, J 2015, ‘Observed spatial and temporal behaviour of seismic rock mass response to blasting’, Journal of the Southern African Institute of Mining and Metallurgy, vol. 115, no. 11, pp. 1044–1056.
Woodward, KR, Wesseloo, J & Potvin, Y 2017, ‘Temporal delineation and quantification of short term clustered mining seismicity’, Pure and Applied Geophysics, vol. 174, no. 7, pp. 2581–2599.
Woodward, KR, Wesseloo, J & Potvin, Y 2018, ‘A spatially focused clustering methodology for mining seismicity’, Engineering Geology, vol. 232, pp. 104–113.
Yudkowsky, E 2008, ‘Cognitive biases potentially affecting judgment of global risks’, Global Catastrophic Risks, vol. 1, no. 86.

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