Landslide Monitoring and Management Challenge in Remote Papua New Guinea
Landslide monitoring and management is a challenging task in the remote, rugged and sparsely-populated Ok Tedi Mine area of Papua New Guinea (PNG). Ground elevations are 500–2200 m above sea level. Annual rainfall is 8000–13000 mm. Earthquakes may exceed magnitude 7 on the Richter scale; but are commonly 3–6. Avalanche debris from an ancient landslide dating back to 6700 BC underlies much of the existing terrain. Recent landslides often involve reactivation of old debris materials. The stability situation is compounded by local inhabitants’ deforestation of rugged hillsides to establish gardens. Limitations of various monitoring systems are discussed and case studies presented.
KeywordsLandslides Monitoring Management Case studies Remote Rugged Wet weather
Good monitoring outcomes always involve a dedicated team effort. The authors thank all geotechnical personnel involved in this task since the start of Ok Tedi mining operations in the early 1980s.
- Dagdelem K (2005) Slope stability: advances in pit slope monitoring and management systems. Eng Min J :20–24Google Scholar
- Itiogen P (2007) Bultem village landslide assessment report, SMEC PNG Ltd Project J0382, dated 11 May 2007, 27 p and Appendices 1 to 4Google Scholar
- Little TN, Cortes JP, Baczynski NR (1999) Risk-based slope design and optimization study for the Ok Tedi copper-gold mine: volumes 1 to 8. Internal report, Ok Tedi Mining Limited, Technical Services Department: Geotechnical Engineering SectionGoogle Scholar
- Read JRL, Maconochie AP (1992) The Vancouver ridge landslide, Ok Tedi mine, Papua New Guinea. In: Bell DH (ed) Proceedings of 6th international symposium on landslides. Christchurch, New Zealand, Balkema, Rotterdam, pp 1317–1321Google Scholar
- Robbins JC, Petterson MG (2015) Landslide inventory developed in a data sparse region: spatial and temporal characteristics of landslides in Papua New Guinea. Nat Hazards Earth Syst Sci Discuss 3:4871–4917. doi: 10.5194/nhessd-3-4871-2015