Authors: Gunasekera, UK

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Gunasekera, UK 2013, 'Geohazard mitigation in remote and rugged terrain', in PM Dight (ed.), Slope Stability 2013: Proceedings of the 2013 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering, Australian Centre for Geomechanics, Perth, pp. 963-980,

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Newmont Asia Pacific Region (APAC) operated a number of exploration tenements in Papua New Guinea, the Solomon Islands and Indonesia. A common feature to all these sites were rugged terrain, very thick vegetation canopy, high intensity rainfall and relatively young geology. Geohazards such as landslides, earthquakes and flash flooding are common in these terrains. Past incidents at the exploration sites highlighted the requirement for geotechnical input prior to site selection. This article explains the process that was developed in the preparation of a Geohazard Mitigation Tool (GHMT) that was used for the selection of safe sites suitable for Newmont exploration infrastructure. Available good quality topographic images were used to acquire slope, drainage and landslide information. Regional and local soils and geology maps were helpful in ascertaining soils conditions. Prevailing wind information was also useful. To put all the above information together into a geohazard rated map of the exploration regions, ArcGIS tools were utilised.

Australian Geomechanics Society (2007a) Guideline for landslide susceptibility, hazard and risk zoning for land use management, Australian Geomechanics Society landslide taskforce landslide zoning working group, Australian Geomechanics, Institution of Engineers Australia, Vol. 42(1) March 2007, pp. 13–36.
Australian Geomechanics Society (2007b) Australian Geoguide LR8 (Construction Practice), Australian Geomechanics, Institution of Engineers Australia, Vol. 42(1) March 2007, pp. 174–175.
Australian Geomechanics Society (2000) Landslide risk management concepts and guidelines, Australian Geomechanics Society, Australian Geomechanics, Institution of Engineers Australia, Vol. 35(1) March 2000, pp. 49–92.
Bell, F.G. (2006) Geological Hazards: Their Assessment, Avoidance and Mitigation, Taylor & Francis, e-Library, 656 p.
Cascini, L., Bonnard, C.H., Corominas, J., Jibson, R. and Montero-Olarte, J. (2005) Landslide hazard and risk zoning for urban planning and development – State of the Art report, in Proceedings International Conference on Landslide Risk Management, O. Hungr, R. Fell, R. Couture and E. Eberhardt (eds), 31 May–3 June 2005, Vancouver, Canada, Balkema, Rotterdam, pp. 199–235.
Cruden, D.M. and Varnes, D.J. (1996) Landslide types and processes, Landslides Investigation and Mitigation, Transportation Research Board, Special Report 247, National Research Council, K. Turner and R.L. Schuster (eds), National Academy Press, Washington, D.C.
Fell, R., Ho, K.K.S., Lacasse, S. and Leroi, E. (2005) A framework for landslide risk assessment and management, Landslide Risk Management, O. Hungr, R. Fell, R. Couture, E. Eberhardt (eds), Taylor & Francis, London, pp. 3–26.
Fell, R., Corominas, J., Bonnard, C., Cascini, L., Leroi, E. and Savage, W.Z. (2008) Guidelines for landslide susceptibility, hazard and risk zoning for land use planning, Engineering Geology, Elsevier, Vol. 102, pp. 85–98.
Hansen, A. (1984) Landslide Hazard Analysis, Slope Instability, D. Brunsden and D.B. Prior (eds), Wiley-Interscience, Chichester, pp. 523–602.
Horton, P., Jaboyedoff, M. and Bardou, E. (2008) Debris flow susceptibility mapping at a regional scale, in Proceedings 4th Canadian Conference on Geohazards, J. Locat, D. Perret, D. Turmel, D. Demers, S. Leroueil (eds), 20–24 May 2008, Québec, Canada, Presse de l’Université Laval, Québec, pp. 399–406.
Hungr, O., Corominas, J. and Eberhardt, E. (2005) Estimating landslide motion mechanisms, travel distance and velocity, Landslide Risk Management, Taylor & Francis, London, pp. 99–128.
Kim, Y.J., Kim, W.Y., Yu, I.H., Seo, D.J. and Yang, Y.K. (1992) Analysis of Regional Geologic Hazards (Landslide) Using GIS Technology, in Proceedings XVIIth ISPRS Congress Technical Commission IV: Cartographic and Data Base Applications of Photogrammetry and Machine Vision, L.W. Fritz and J.R. Lucas, 2–14 August 1992, Washington, D.C., USA, International Society for Photogrammetry and Remote Sensing, Bethesda, pp. 675–680.
Kim, Y.J. and Kim, W.Y. (1991) Slope stability analysis using Sarma method in Daesungri area (Chuncheon), Journal Korean Earth Science Society, Korean Earth Science Society, Vol. 12, No. 1, pp. 14–24.
Metternicht, G., Hurni, L. and Gogu, R. (2005) Remote sensing of landslides: An analysis of the potential contribution to geo-spatial systems for hazard assessment in mountainous environments, Remote Sensing of Environment, Elsevier, Vol. 98(2–3), pp. 284–303.
SafeLand (2010) Deliverable 4.1, Review of Techniques for Landslide Detection, Fast Characterization, Rapid Mapping and Long−Term Monitoring, viewed 29 July 2013, .
SafeLand (2011) Deliverable D2.4, Guidelines for landslide susceptibility, hazard and risk assessment and zoning, Living with landslide risk in Europe: Assessment, effects of global change, and risk management strategies, viewed 29 July 2013, .
Saha, A.K., Gupta, R.P. and Arora, M.K. (2002) GIS-based Landslide Hazard Zonation in the Bhagirathi (Ganga) Valley, Himalayas, International Journal of Remote Sensing, Remote Sensing and Photogrammetry Society, Vol. 23, Issue 2, pp. 357–369.
Soeters, R. and Van Westen, C.J. (1996) Slope instability recognition, analysis and zonation, Landslides, Investigation and Mitigation, Transportation Research Board, National Research Council, Special Report 247, A.K. Turner and R.L. Schuster (eds), National Academy Press, Washington, D.C., pp. 129–177.
Van Westen, C.J., Van Asch, T.W.J. and Soeters, R. (2005) Landslide hazard and risk zonation; why is it still so difficult? Bulletin of Engineering geology and the Environment, International Association for Engineering Geology and the Environment, Vol. 65(2), pp. 167–184.
Van Westen, C.J., Castellanos Abella, E.A. and Sekhar, L.K. (2008) Spatial data for landslide susceptibility, hazards and vulnerability assessment: an overview, Engineering Geology, Elsevier, Vol. 102 (3–4), pp. 112–131.
Varnes, D.J. (1984) Landslide Hazard Zonation: A Review of Principles and Practices, Natural Hazards 3, UNESCO, Paris.
Walker, B.F., Dale, M., Fell, R. Jeffery, R., Leventhal, A., McMahon, M. Mostyn, G. and Phillips, A. (1985) Geotechnical Risk Association with hillside development, Australian Geomechanics News, Australian Geomechanics Society, No. 10, pp. 29−35.

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