Published: Ιαν 1, 2010
Earthquake-induced rock fall rock fall analysis Achaia Western Greece
Lainas S. Lainas S.
S. Koulouris
S. Vagenas
N. Depountis
N. Sabatakakis
G. Koukis
On the 8th of June 2008 an earthquake of magnitude Ms=6.5 occurred in Western Greece, affecting Achaia and Ilia Prefectures. According to state reports 2 casualties occurred, 214 people were injured and more than 15 villages and towns suffered extensive damages in properties and infrastructures. Among the secondary phenomena that were reported were extensive rockfalls that affected Santomeri village; a small village located on the western slope of the Scolis mountain. Large-sized limestone boulders, some reaching a volume up to 10m3 stroke houses and blocked roads, fortunately without casualties. The village was temporarily evacueated and the Laboratory of Engineering Geology was commissioned to undertake an Engineering Geological appraisal in order to investigate the extent of the rockfall events, assess the rockfall hazard and propose retention and protective measures so the area to be soon re-inhabited. After conducting a detailed engineering geological and geotechnical survey which included large scale engineering geological mapping, rockmass characterization and laboratory tests the inhabited area was initially divided in two zones of different rock fall risk level. By performing rockfall analyses in critical traverses a rock fall retention system, 325m long in total, comprising rock fall barrier was finally proposed.
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Bieniawski, Z.T., 1989. “Engineering rock mass classifications.” Published by John Wiley & Sons, New
York, 251 pp.
Decourt, J., 1964. Contribution à l’ étude géologique d’un secteur du Péloponnèse septentrional. Ann
géol. Pays. Hellen., 15, pp. 1-418, Athènes.
Fleury. J.J., 1980. Les zones de Gavrovo-Tripolitza et du Pinde-Olonos (Grèce continetale et Peloponnèse
du Nord). Evolution d’une plateforme et d’un bassin dans leur cadre alpin. Soc. Géol. Nord. Publ. no
, 651 pp., Lille.
I.S.R.M. Suggested Methods,1981. «Rock Characterization Testing and Monitoring», Editor E. Brown,
Pergamon Press.
Hoek, E. and Brown, E.T., 1997. “Practical estimates of rock mass strength”. Intnl. J. Rock Mech. & Mining
Sci. & Geomechanics Abstracts. 34(8), pp. 1165-1186
HoeK, E., Brown, P. and Bennisi, M., 1998. “Applicability of the Geological Strength Index (GSI) classification
for very weak and sheared rock masses. The case of the Athens Schist Formation”. Bull.
Engg. Env. 57(2), pp. 151 – 160.
HoeK, E. and Marinos, P., 2000. Predicting Tunnel Squeezing. Tunnels and Tunneling International, Part
– November Issue 2000, pp. 45 – 51, Part 2 – December 2000,pp. 34 – 36.
ITSAK, 2008. The Achaia-Hleia earthquake. 4th Technical Report, Institute of Engineering Seismology
and Antiseismic Constructions, 67pp, Thessaloniki. Available online at:
Koukis, G. et al, 2008. Engineering Geological - Geotechnical conditions and retention measures after the
th June 2008 earthquake in Santomeri Village, W. Greece. Technical Report, University of Patras, Department
of Geology, 52 pp, Patra
Palmstrom, A., 1982. The volumetric joint count – a useful and simple measure of the degree of rock
jointing”, Proc. 4th congr. Int. Assn. Engng. Geol., Delhi 5, pp. 221 – 228.
RocScience Inc, 2003. RocFall Advanced Tutorial. Rocscience Inc, 8pp.
RocScience Inc, 2004. RocFall V.4, Rocscience Inc, Canada.
Tsiambaos, G. and Sabatakakis, N. (2000). “Considerations on RMR classification system concerning
limestone slope stability”, Proceedings of the International Conference on Geotechnical and Geological
Engineering (GeoEng2000), Melbourne, pp.19 – 24.
Vagenas, N., 2009. Rockfall analyses of Rockfall events induced by the 8th June 2008 earthquake in Santomeri
Village, W. Greece. Master Thesis, University of Patras, Department of Geology, 304 pp, Patra
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