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| Titel |
Hydrogeological model and hydraulic behaviour of a large landslide in the Italian Western Alps |
| VerfasserIn |
G. Pisani, M. Castelli, C. Scavia |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 10, no. 11 ; Nr. 10, no. 11 (2010-11-30), S.2391-2406 |
| Datensatznummer |
250008507
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| Publikation (Nr.) |
 copernicus.org/nhess-10-2391-2010.pdf |
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| Zusammenfassung |
| A study of the large, deep-seated Rosone landslide (Italian Western Alps) is
presented. A large amount of geological and geomechanical data has been
collected in this area, due to the presence of various villages and man-made
structures, and an automatic monitoring system was installed in December
2000. Since its installation, this system has been showing a continuous slow
movement with periodical accelerations that can be correlated to heavy
rainfall events. A hydrogeological model has been developed to study the
influence of rainfall events on the pore pressure variations inside the rock
slope. The structural characteristics, inclinometric and piezometric
measurements, statigraphic and seismic profiles, geomorphologic information,
water balance and chemical analyses of the main springs in the slope have
been taken into account to consider this problem. A numerical hydraulic
investigation, based on a continuum equivalent model of the landslide, has
then been carried out using the FLAC3D computer code. Some
preliminary results, which highlight the role of permeability and the
porosity values of the rock mass on the pore pressure variations during heavy
rainfall, are shown in the paper. |
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