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  • Cited by 7
  • Print publication year: 2012
  • Online publication date: May 2013

23 - The 2006 Eiger rockslide, European Alps

Summary

Abstract

In July 2006, approximately 2 million m3 of massive limestone began to move on the east flank of the Eiger in central Switzerland. For more than two years after the initial failure, the rock mass moved at rates of up to 70 cm per day. A detailed analysis of the structures and velocities of the different moving blocks was conducted with the aid of terrestrial laser scanning. The moving rock mass included a rear block that subsided, pushing a frontal block forward. Movement directions were controlled by discontinuity sets that formed wedges bounded on one side by sub-vertical bedding planes. The instability was, until recently, buttressed by a glacier. Slope observations and results of continuum and discontinuum modeling indicate that the structure of the rock mass and topography were the main causes of the instability. Progressive weathering and mechanical fatigue of the rock mass appear to have led to the failure. A dynamic analytical model further indicates that the rockslide was primarily controlled by a reduction in the strength of discontinuities, the effects of ice deformation, and – to a limited extent – groundwater flow. This study shows that realistic and simple instability models can be constructed for rock-slope failures if high-resolution data are available.

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References

Abellán, A., Jaboyedoff, M., Oppikofer, T. and Vilaplana, J.M. (2009). Detection of millimetric deformation using a terrestrial laser scanner: Experiment and application to rockfall event. Natural Hazards and Earth System Sciences, 9, 365–372.
Abellán, A., Vilaplana, J. M., Calvet, J. and Blanchard, J. (2010). Detection and spatial prediction of rockfalls by means of terrestrial laser scanning modelling. Geomorphology, 119, 162–171.
Agliardi, F., Crosta, G. and Zanchi, A. (2001). Structural constraints on deep-seated slope deformation kinematics. Engineering Geology, 59, 83–102.
Alonso, E.E. and Pinyol, N.M. (2010). Criteria for rapid sliding. I. A review of Vaiont case. Engineering Geology, 114, 198–210.
Ambrosi, C. and Crosta, G.B. (2006). Large sackung along major tectonic features in the central Alps. Engineering Geology, 83, 183–200.
Ambrosi, C. and Crosta, G.B. (2011). Valley shape influence on deformation mechanisms of rock slopes. In Slope Tectonics, ed. M. Jaboyedoff. Geological Society of London, Special Publication 351, pp. 215–233.
Ballantyne, C.K. (2002). Paraglacial geomorphology. Quaternary Science Reviews, 21, 1935–2017.
Baltsavias, E.P. (1999). Airbone laser scanning: Basic relations and formulas. ISPRS Journal of Photogrammetry & Remote Sensing, 54, 199–214.
Bardet, J.-P. and Kapuskar, M.M. (1989). A simplex analysis of slope stability. Computers and Geotechnics, 8, 329–348.
Besl, P. and McKay, N. (1992). A method for registration of 3-D shapes. IEEE Transactions on Pattern Analysis and Machine Intelligence, 14, 239–256.
Brideau, M.-A., Stead, D. and Couture, R. (2006). Structural and engineering geology of the East Gate Landslide, Purcell Mountains, British Columbia, Canada. Engineering Geology, 84, 183–206.
Bucher, S.P. and Loew, S. (2009). Talklüfte im Zentralen Aaregranit der Schöllenen-Schlucht (Kanton Uri, Schweiz), Swiss Journal of Geosciences, 102, 403–420.
Cai, M., Kaiser, P.K., Tasaka, H. and Minami, M. 2007. Determination of residual strength parameters of jointed rock masses using the GSI system. International Journal of Rock Mechanics and Mining Sciences, 44, 247–265.
Carter, T.G., Diederichs, M.S. and Carvalho, J.L. (2008). Application of modified Hoek–Brown transition relationships for assessing strength and post yield behaviour at both ends of the rock competence scale. In Proceedings of the 6th International Symposium on Ground Support in Mining and Civil Engineering Construction, ed. P.R. Stacey and D.F. Malan. Johannesburg:South African Institute of Mining and Metallurgy, pp. 37–60.
Conforti, C., Deline, P., Mortara, G. and Tamburini, A. (2005). Terrestrial scanning LiDAR technology applied to study the evolution of the ice-contact Miage lake (Mont Blanc Massif, Italy). In Proceedings of the 9th Alpine Glaciological Meeting, Milan, Italy.
Cossart, E., Braucher, R., Fort, M., Bourlès, D.L. and Carcaillet, J. (2008). Slope instability in relation to glacial debuttressing in alpine areas (Upper Durance catchment, southeastern France): Evidence from field data and 10Be cosmic ray exposure ages. Geomorphology, 95, 3–26.
Coulthard, M.A. (1979). Back Analysis of Observed Spoil Failures Using a Two-Wedge Method. Technical Report 83, CSIRO Division of Applied Geomechanics, Melbourne, Australia.
Diederichs, M.S. (2003). Rock fracture and collapse under low confinement conditions. Rock Mechanics and Rock Engineering, 36, 339–381.
Eberhardt, E., Stead, D. and Coggan, J.S. (2004). Numerical analysis of initiation and progressive failure in natural rock slopes: The 1991 Randa rockslide. International Journal of Rock Mechanics and Mining Sciences, 41, 69–87.
Fischer, L., Amann, F., Moore, J. and Huggel, C. (2010). Assessment of periglacial slope stability for the 1988 Tschierva rock avalanche (Piz Morteratsch, Switzerland). Engineering Geology, 116, 32–43.
Florineth, D. and Schlüchter, C. (1998). Reconstructing the Last Glacial Maximum (LGM) ice surface geometry and flowlines in the central Swiss Alps. Eclogae Geologicae Helvetiae 91, 391–407.
Froese, C., Moreno, F., Jaboyedoff, M. and Cruden, D.M. (2009). 25 years of movement monitoring on the South Peak of Turtle Mountain: Understanding the hazard. Canadian Geotechnical Journal, 46, 256–269.
Froese, C.R., Charrière, M., Humair, F., Jaboyedoff, M. and Pedrazzini, A. (2012). Characterization and management of rockslide hazard at Turtle Mountain, Alberta, Canada. In Landslides: Types, Mechanisms and Modeling, ed. J.J. Clague and D. Stead. Cambridge, UK: Cambridge University Press, pp. 310–322.
Gagnon, R.E. and Gammon, P.H. (1995). Triaxial experiments on iceberg and glacier ice. Journal of Glaciology, 41, 528–540.
Ghirotti, M., Martin, S. and Genovois, R. (2011). The Celentino deep-seated gravitational slope deformation (DSGSD): Structural and geomechanical analyses (Peio Valley, NE Italy). In Slope Tectonics, ed. M. Jaboyedoff. Geological Society of London, Special Publications 351, pp. 235–252.
Gischig, V., Amann, F., Moore, J.R.et al. (2011). Composite rock slope kinematics at the current Randa instability, Switzerland, based on remote sensing and numerical modelling. Engineering Geology, 118, 37–53.
Glen, J.W. (1955). The creep of polycrystalline ice. Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences, 228, 519–538.
Günzler-Seiffert, H. and Wyss, R. (1938). Swiss Geological Atlas, Sheet 396 Grindelwald (Atlas Sheet 13). Swisstopo, scale 1:25,000.
Hajiabdolmajid, V., Kaiser, P.K. and Martin, C.D. (2002). Modelling brittle failure of rock. International Journal of Rock Mechanics and Mining Sciences, 39, 731–741.
Hoek, E., Carranza-Torres, C.T. and Corkum, B. (2002). Hoek–Brown failure criterion: 2002 edition. In Proceedings of the 5th North American Rock Mechanics Society, Toronto, ON, pp. 267–273.
InnovMetric (2011). PolyWorks: 3D Scanner Software – 3D Scanning Software – 3D Digitizers [available at www.innovmetric.com/polyworks/3D-scanners/home.aspx?lang=en, accessed July 6, 2011].
International Society of Rock Mechanics (ISRM) (1978). Suggested methods for quantitative description of discontinuities in rock masses. International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 15, 319–358.
Itasca (2004). UDEC: Universal Distinct Element Code (Version 4.0). Minneapolis, MN:Itasca Consulting Group.
Jaboyedoff, M., Baillifard, F., Bardou, E. and Girod, F. (2004). Weathering, cycles of saturation–unsaturation, and strain effects as principal processes for rock mass destabilization. Quarterly Journal of Engineering Geology and Hydrogeology, 37, 95–103.
Jaboyedoff, M., Metzger, R., Oppikofer, T.et al. (2007). New insight techniques to analyze rock-slope relief using DEM and 3D-imaging cloud points: COLTOP-3D software. In Rock Mechanics: Meeting Society’s Challenges and Demands, ed. E. Eberhardt, D. Stead and T. Morrison. London: Taylor & Francis, pp. 61–68.
Jaboyedoff, M., Couture, R. and Locat, P. (2009). Structural analysis of Turtle Mountain (Alberta) using digital elevation model: Toward a progressive failure. Geomorphology, 103, 5–16.
Jennings, J.E. (1970). A mathematical theory for the calculation of the stability of open cast mines. In Planning Open Pit Mines, ed. P.W.J. van Rensburg. Johannesburg: South African Institute of Mining and Metallurgy, pp. 87–102.
Kastrup, U., Zoback, M.L., Deichmann, N.et al. (2004). Stress field variations in the Swiss Alps and the northern Alpine foreland derived from inversion of fault plane solutions. Journal of Geophysical Research, 109, B01402, doi:10.1029/2003JB002550.
Lichti, D.D., Gordon, S.J. and Stewart, M.P. (2002). Ground-based laser scanners: Operations, systems and applications. Geomatica, 56, 21–33.
Liniger, M. (2006). Die Herausforderung der Gefahrenprognose bei Massenbewegungen: Rutsch-und Sturzprozesse. Bulletin for Applied Geology, 11(2), 75–88.
Mathworks (2009). Matlab 9. Natick, MA: The MathWorks Inc.
Messerli, B., Messerli, P., Pfister, C. and Zumbühl, H.J. (1978). Fluctuations of climate and glaciers in the Bernese Oberland, Switzerland and their geological significance, 1600 to 1975. Arctic and Alpine Research, 10, 247–260.
Monserrat, O. and Crosetto, M. (2008). Deformation measurement using terrestrial laser scanning data and least squares 3D surface matching. ISPRS Journal of Photogrammetry and Remote Sensing, 63, 142–154.
Norrish, N.I. and Wyllie, D.C. (1996). Rock slope stability analysis. In Landslides: Investigation and Mitigation, ed. A.K. Turner and R.L. Schuster. Washington, DC: Transportation Research Board, Special Report 247, pp. 391–425.
OcCC (2007). Climate Change and Switzerland in 2050: Expected Impacts on Environment, Society and Economy. Bern, Switzerland: OcCC/ProClim.
Oppikofer, T., Jaboyedoff, M. and Keusen, H.R. (2008). Collapse at the eastern Eiger flank in the Swiss Alps. Nature Geoscience, 1, 531–535.
Oppikofer, T., Jaboyedoff, M., Blikra, L., Derron, M.-H. and Metzger, R. (2009). Characterization and monitoring of the Åknes rockslide using terrestrial laser scanning. Natural Hazards and Earth System Sciences, 9, 1003–1019.
Pedrazzini, A., Jaboyedoff, M., Derron, M.-H., Abellán, A. and Vega Orozco, C. (2010). Reinterpretation of displacements and failure mechanisms of the upper portion of Randa rock slide. In Proceedings of the 63rd Canadian Geotechnical Conference & 6th Canadian Permafrost Conference, Calgary, AB, pp. 913–921.
Portmann, J.-P. (1977). Variations glaciaires historiques et préhistoriques dans les Alpes Suisses. Revue du Club Alpin Suisse, 4, 145–172.
Rabatel, A., Deline, P., Jaillet, S. and Ravanel, L. (2008). Rock falls in high-alpine rock walls quantified by terrestrial LIDAR measurements: A case study in the Mont Blanc area. Geophysical Research Letters, 35, L10502, doi:10.1029/2008GL033424.
Rocscience (2010). Phase2 Version 7.0. Toronto, ON: Rocscience Inc.
Sarma, S.K. (1979). Stability analysis of embankments and slopes. Journal of the Geotechnical Engineering Division, 105, 1511–1524.
Sartori, M., Baillifard, F., Jaboyedoff, M. and Rouiller, J.-D. (2003). Kinematics of the 1991 Randa rockslides (Valais, Switzerland). Natural Hazards and Earth System Sciences, 3, 423–433.
Schulson, E.M. (1999). The structure and mechanical behaviour of ice. Journal of the Minerals, Metals and Materials Society, 51(2), 21–27.
Spinnler, G. (2001). Conception des Machines: Principes et Applications. Lausanne, Switzerland: Presses Polytechniques et Universitaires Romandes.
Stamatopoulos, C. and Petridis, P. (2006). Back analysis of the Lower San Fernando Dam slide using a multi-block model. In Geohazards, ed. F. Nadim, R. Pöttler, H. Einstein, H. Klapperich and S. Kramer. Lillehammer, Norway: Engineering Conferences International Symposium Series P0.
Stead, D., Eberhardt, E. and Coggan, J.S. (2006). Developments in the characterization of complex rock slope deformation and failure using numerical modelling techniques. Engineering Geology, 83, 217–235.
Sturzenegger, M. and Stead, D. (2009). Quantifying discontinuity orientation and persistence on high mountain rock slopes and large landslides using terrestrial remote sensing techniques. Natural Hazards and Earth System Sciences, 9, 267–287.
Sturzenegger, M., Yan, M., Stead, D. and Elmo, D. (2007). Application and limitations of ground-based laser scanning in rock slope characterization. In Rock Mechanics: Meeting Society’s Challenges and Demands, ed. E. Eberhardt, D. Stead and T. Morrison. London: Taylor & Francis, pp. 29–36.
Sultan, H.A. and Seed, H.B. (1967). Stability of sloping core earth dams. Journal of the American Society of Civil Engineers, 93(4), 45–47.
Teza, G., Galgaro, A., Zaltron, N. and Genevois, R. (2007). Terrestrial laser scanner to detect landslide displacement fields: A new approach. International Journal of Remote Sensing, 28, 3425–3446.
Werder, M.A., Bauder, A., Funk, M. and Keusen, H.-R. (2010). Hazard assessment investigations in connection with the formation of a lake on the tongue of Unterer Grindelwaldgletscher, Bernese Alps, Switzerland. Natural Hazards and Earth System Sciences, 10, 227–237.
Zhang, J., Tang, W.H. and Zhang, L.M. (2010). Efficient probabilistic back-analysis of slope stability model parameters. Journal of Geotechnical and Geoenvironmental Engineering, 136, 99–109.