Advertisement

Permeability in flysch — Distribution decrease with depth and grout curtains under dams

  • Vassilis Marinos
  • Petros Fortsakis
  • George Prountzopoulos
  • Paul MarinosEmail author
Article

Abstract

A considerable number of in situ permeability tests in flysch are processed to a depth of 120m with a good spatial distribution. The distribution of permeability values for the different litho-types of this formation, their comparison and their decrease with depth is discussed. The depth where a permeability of 3 to 5×10−7m/sec can be retained (the limit of a reasonable grouting under a high dam) may be twofold if the geological history of the formation could not contain a compressional tectonic process. This depth may reach 100m in some cases. The differences in the mean values of permeability among the various litho-types are minor, while the presence of siltstones, always present although with varied participation, dramatically controls the global permeability.

Keywords

Permeability Flysch Dams Grout curtain Distribution with depth 

References

  1. Dounias G, Marinos P, Karavokyris I (1997) Geotechnical design of Evinos dam. In: Proceedings of the 3rd Hellenic Conference of Geotechnical Engineering. Patra, Greece.Google Scholar
  2. Houlsby A (1985) Design and construction of cement grouted curtains. In: Proceedings of the 15th International Congress of Large Dams. Lausanne, Switzerland. Vol. III, pp 999–1017, Q.58, R.60.Google Scholar
  3. Liakouris D (1995) Geology and the dams of Public Power Corporation. Athens: Public Power Corporation.Google Scholar
  4. Marinos P (1982) Geology of Greece in respect with engineering problems. Flysch — Shales. In: Proceedings of National Geotechnical Meeting. National Technical University of Athens and Hellenic Society of Soil Mechanics and Geotechnical Engineering. Athens, Greece.Google Scholar
  5. Marinos P, Karavokyris G, Dounias G, (1995) Flysch geological features and the design of Evinos dam, Greece. In: Proceedings of the 11th European Conference on Soil Mechanics and Foundation Engineering. Danish Geotechnical Society. Copenhagen, Denmark.Google Scholar
  6. Marinos P, Kavvadas M, Kotsonis A, Somakos L, Perleros V, Lazaridou S (2008) Geological and geotechnical issues during the construction of Gadouras Dam in Rhodes island-Technical characteristics of the project. In: Proceedings of the 1st Hellenic Large Dams Conference. Larisa, Greece.Google Scholar
  7. Marinos V (2007) Geotechnical classification and behaviour of weak and complex rock masses in tunneling. PhD thesis, National Technical University of Athens, School of Civil Engineering, Athens, Greece.Google Scholar

Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Vassilis Marinos
    • 1
  • Petros Fortsakis
    • 2
  • George Prountzopoulos
    • 2
  • Paul Marinos
    • 2
    Email author
  1. 1.School of GeologyAristotle University of ThessalonikiThessalonikiGreece
  2. 2.School of Civil Engineering, Department of Geotechnical EngineeringNational Technical University of AthensZografou, AthensGreece

Personalised recommendations