Norwegian Geotechnical Institute
EU Contract no. EVG1-CT2002-00059

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Norwegian flag Norwegian Geotechnical Institute logo Norwegian Geotechnical Institute (NGI) [http://www.ngi.no/]

 
  Institution description
  • NGI is a private foundation for research and advisory services, located in Oslo, Norway. NGI was established in 1953 and currently employs a staff of 136 persons of which 95 have university degrees.
  • In 1998 the turnover was € 20 million, 31% of NGI's activity was on international projects. R&D currently represent about 50% of NGI's activities.
  • Trademarks of our research, now covering all aspects of geotechnical engineering, are to meet the industry's needs for practical and reliable solutions.

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  • The Norwegian topography, geology and climate cause a relatively large number of snow avalanches and slides to occur. In 1973 the Norwegian Parliament decided that snow avalanche research and advisory services in Norway should be placed at NGI.
  • Since then NGI has been involved in R&D and consultant work on the following items related to snow avalanches, quick clay slides, rock slides and debris flows, as well as all kinds of subaqueous gravity mass flows:

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    - (1) Initiation,
    - (2) Dynamics, travel distances and impact forces,
    - (3) Protective measures,
    - (4) Risk analysis and hazard zoning,
    - (5) Risk evaluation and analytical/numerical simulations of tsunamis in parallel to studies on
    xxxxxxsubaqueous mass flows and rockslides plunging into the sea.
     
  • In general, the strength of NGI lies in the vast experience and expertise of our personnel, and the possibility to establish project groups across the regular scientific dividing lines. The basic expertise covers three main areas:

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    - (1) Properties and physical behaviour of soil, rock and snow,
    - (2) Numerical modelling and analysis of soil, rock and snow and their interaction with
    xxxxxxstructures,
    - (3) Instrumentation and performance monitoring.

     
  • The expertise of the institute further includes:

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    - (a) site investigations and laboratory testing,
    - (b) design, instrumentation and analysis of foundations for buildings, bridges, offshore and
    xxxxxxharbour structures,
    - (c) evaluation of geotechnical aspects related to tunnels, rock caverns and reservoirs,
    - (d) dams and environmental engineering.

     
  • The working philosophy is to utilise, in an integrated approach, past experience and latest theories and techniques, backed up with full-scale measurements and performance monitoring. This ensures the soundness and reliability of our recommendations.
Key persons (please click on the names to view details) Publications
  • Domaas, U. and Harbitz, C.B. 1998. Avalanche run-up heights on deflecting dams: Centre-of-mass computations compared to observations. NGI Publications 203. (25 Years of Snow Avalanche Research at NGI, Anniversary Conference, Voss, Norway, 12-16 May, 1998, Proceedings). Norwegian Geotechnical Institute, Oslo.
  • Harbitz, C., Issler, D. and Keylock, C., 1998: Conclusions from a recent survey of avalanche computational models. NGI Publications 203. (25 Years of Snow Avalanche Research at NGI, Anniversary Conference, Voss, Norway, 12-16 May, 1998, Proceedings). Norwegian Geotechnical Institute, Oslo.
  • Irgens, F., Schieldrop, B., Harbitz, C.B., Domaas, U. and Opsahl, R. 1998. Simulations of dense snow avalanches on deflecting dams. Annals of Glaciology 26.
  • Issler, D. 1998. Modelling of snow entrainment and deposition in powder snow avalanches. Annals of Glaciology 26, 253-258.
  • Issler, D. (ed.) 1999. European Avalanche Test Sites – Overview and Analysis in View of Coordinated Experiments. Mittlg. Eidg. Inst. f. Schnee- und Lawinenforschung 59, Davos, Switzerland. 121 pp.
  • Kristensen, K. and Larsen, J.O. 1996: The Ryggfonn Avalanche Dynamics project. Proceedings of the International Snow Science Project, ISSW Banff, Canada.
  • Lacasse, S., Andersen, K.H., Hermann, S., Kvalstad, T., Kveldsvik, V. and Madshus, C. 2001. "Design, construction and maintenance of infrastructure". Theme Lecture, XVth ICSMGE (Int. Soc. of Soil Mechanics and Geotechnical Engineering) Istanbul, Aug. 2001 (Vol. 4).
  • Lacasse, S. 2001. 37th Terzaghi Lecture: "Geotechnical Solutions for the Offshore: Synergy of Rreseanch and Practice". ASCE National Convention 2001, Houston, 12 Oct. 2001, to be published in ASCE Journal of Geotechnical and Environmental Engineering.
  • Larsen, J.O. and Norem, H.: The effect of dam constructions as mitigative measures. 14 years of experience from a full scale project. Proceedings International conference ``Avalanches and Related Subjects'', Kirovsk, Russia, 1996.
  • Lied, K. and Bakkehøi, S. 1980. Empirical calculations of snow-avalanche run-out distance based on topographic parameters. Journal of Glaciology 26, No. 94, 165-178.
  • Lied, K., Weiler, C., Bakkehøi, S., and Hopf, J. 1995: Calculation methods for avalanche runout distance in the Austrian Alps. ANENA, Chamonix 1995.
  • Lied, K. 1984. Earth dams for protection against snow avalanches. NGI Report 581200-4.
 

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