Authors: Brink, AvZ; Roberts, MKC

Purchase Paper

Cite As:
Brink, AvZ & Roberts, MKC 2007, 'Early Warning and/or Continous Risk Assessment of Rockfalls in Deep South African Mines', in Y Potvin (ed.), Proceedings of the Fourth International Seminar on Deep and High Stress Mining, Australian Centre for Geomechanics, Perth, pp. 437-450.

Download citation as:   ris   bibtex   endnote   text   Zotero


Abstract:
This paper describes the development of a system that will provide early warning and/or continuous risk assessment of rockfalls in deep South African mines. A multidisciplinary team from the CSIR, South Africa has been developing a scalable risk/hazard monitoring system, based on a wireless sensor network concept. The first application of this underground wireless sensor network is the monitoring of precursory indicators of rockfalls. Continuous measurements will be undertaken primarily to identify rockfall hazards, possible precursors, or parameters indicating increased risk. With an improved understanding of failure mechanisms and where and when fatal rockfalls occur, the system requirements for detecting the theoretically likely precursors are being specified. Specifications included the expected dynamic range of these precursors, their rate of change, and the sensing resolution required. A statistical analysis of the identified warning parameters is undertaken to understand their interdependence and the correlation between them. It is likely that single parameters will not provide adequate risk measures or alarms. The critical parameters are being combined using Bayesian theory and other statistical methods to improve the accuracy and relevance of risk quantification and prediction. The application of wireless sensor network-based monitoring in deep and high-stress mining to provide early detection of potential rockfalls is the first of a series of anticipated applications of such technology to assess and mitigate mining hazard/risk in South African mines.

References:
Brink, A.v.Z. and Newland, A.R. (2001) Automatic real time assessment of windblast risk. ACARP project C8026,
Australian Coal Association Research Programme.
Brink, A.v.Z. (2005) Technology transfer of the risk assessment tool for rock-related risk issues. SIM 03 02 01,
Department of Mineral and Energy Affairs, South Africa.
Brink, A.v.Z., Roberts, M.K.C. and Spottiswoode, S.M. (2002a) Further assessment of seismic hazard/risk in the
Bushveld Complex platinum mines and the implication for regional and local support design. SIMRAC Report
GAP 821, Department of Mineral and Energy Affairs, South Africa.
Brink, A.v.Z., Canbulat, I. and Spottiswoode, S.M. (2002b) Development and evaluation of a warning device for
pending roof instability in coal mines. Proceedings of the SANIRE 2002 Symposium – ‘Re-Defining the
Boundaries’.
Malan, D.F. (2003) Experimental validation of a mine-wide continuous closure monitoring system as a decision making
tool for gold mines. SIMRAC Report GAP 852, Department of Mineral and Energy Affairs, South Africa.
MHSC (2005) Mine Health and Safety Council, South Africa, Annual Report, April 2004 – March 2005.
Naylor, C. (1998) XMaster®: An Easy-to–use expert system shell for Windows. Expert update: The Bulletin of the
British Computer Society's Specialist Group on Knowledge-Based Systems and Applied Artificial Intelligence,
Autumn 1998 Volume 1 Number 2.
Oldroyd, D.C. (2006) A feasibility study of thermal imaging equipment to identify potential rockfalls. SIM 040202,
Department of Mineral and Energy Affairs, South Africa.
Römer, K. and Mattern, F. (2004) The Design Space of Wireless Sensor Networks. IEEE Wireless Communications 11
(6), pp. 54-61.
SIM 06 02 01 workshops (2007) Track A, unpublished.
Sjøgren, B., Øfsthus, A. and Sandberg, J. (1979) Seismic classification of rock mass qualities, Geophysical Prospecting,
Volume 27, pp. 409-442.
Early Warning and/or Continuous Risk Assessment of Rockfalls in
Deep South African Mines A.v.Z. Brink, M.K.C. Roberts
450 Deep Mining 07, Perth, Australia




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