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| Titel |
Site investigation and modelling at "La Maina" landslide (Carnian Alps, Italy) |
| VerfasserIn |
G. Marcato, M. Mantovani, A. Pasuto, S. Silvano, F. Tagliavini, L. Zabuski, A. Zannoni |
| 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 ; 6, no. 1 ; Nr. 6, no. 1 (2006-01-02), S.33-39 |
| Datensatznummer |
250003278
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| Publikation (Nr.) |
 copernicus.org/nhess-6-33-2006.pdf |
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| Zusammenfassung |
| The Sauris reservoir is a hydroelectric basin closed downstream by a 136 m
high, double arc concrete dam. The dam is firmly anchored to a consistent
rock (Dolomia dello Schlern), but the Lower Triassic clayey formations,
cropping out especially in the lower part of the slopes, have made the whole
catchment basin increasingly prone to landslides. In recent years, the "La
Maina landslide" has opened up several joints over a surface of about
100 000 m2, displacing about 1 500 000 m3 of material. Particular
attention is now being given to the evolution of the instability area, as
the reservoir is located at the foot of the landslide. Under the commission
of the Regional Authority for Civil Protection a numerical modelling
simulation in a pseudo-time condition of the slope was developed, in order
to understand the risk for transport infrastructures, for some houses and
for the reservoir and to take urgent mesaures to stabilize the slope. A
monitoring system consisting of four inclinometers, three wire extensometers
and ten GPS bench-mark pillars was immediately set up to check on surface
and deep displacements. The data collected and the geological and
geomorphological evidences was used to carry out a numerical simulation. The
reliability of the results was checked by comparing the model with the
morphological evidence of the movement. The mitigation measures were
designed and realised following the indications provided by the model. |
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