| Permeability in flysch ?? Distribution decrease with depth and grout curtains under dams |
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| 作者姓名： | MARINOS Vassilis FORTSAKIS Petros PROUNTZOPOULOS George MARINOS Paul |
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| 作者单位： | Aristotle University of Thessaloniki, School of Geology,54124, Thessaloniki, Greece;National Technical University of Athens, School of Civil Engineering, Department of Geotechnical Engineering, 9, Iroon Polytechniou str., 157 80 Zografou, Athens, Greece |
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| 摘 要： | 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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| 关 键 词： | Permeability Flysch Dams Grout curtain Distribution with depth |
| 收稿时间： | 21 February 2009 |
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