MARINOS Vassilis, FORTSAKIS Petros, PROUNTZOPOULOS George, MARINOS Paul. 2011: Permeability in Flysch - Distribution Decrease with Depth and Grout Curtains Under Dams. Journal of Mountain Science, 8(2): 234-238. DOI: 10.1007/s11629-011-2108-5
Citation: MARINOS Vassilis, FORTSAKIS Petros, PROUNTZOPOULOS George, MARINOS Paul. 2011: Permeability in Flysch - Distribution Decrease with Depth and Grout Curtains Under Dams. Journal of Mountain Science, 8(2): 234-238. DOI: 10.1007/s11629-011-2108-5

Permeability in Flysch - Distribution Decrease with Depth and Grout Curtains Under Dams

  • 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.
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