The influence of the grain-size, mineralogical and geochemical composition on the Verdesca landslide
Silty sands and clayey silts taken from a landslide in the Agri Valley have been analysed in order to study the role of sediment composition in the slope stability and the development of a slip zone. A geognostic hole was used to collect samples and monitor movements. A slip zone at a depth of about...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2015-01-01
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| Series: | Natural Hazards and Earth System Sciences |
| Online Access: | http://www.nat-hazards-earth-syst-sci.net/15/135/2015/nhess-15-135-2015.pdf |
| Summary: | Silty sands and clayey silts taken from a landslide in the Agri Valley have
been analysed in order to study the
role of sediment composition in the slope stability and the development of a
slip zone. A geognostic hole was used to collect samples and monitor
movements. A slip zone at a depth of about 14 m was identified.
Compositional and physical–mechanical characterisation of samples was
carried out. Some compositional characters, such as a 32–2 μm
grain-size fraction, clay mineral content, cation exchange capacity and total
nitrogen, increase in the slip zone. Some correlations have been found
between geotechnical properties (residual shear strength and residual
friction angle) and the same compositional characters, which can therefore be
considered possible factors influencing slope stability. |
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| ISSN: | 1561-8633 1684-9981 |