In a Spring day of 2006, early afternoon, the Cianross ski slope, located in the Dolomitic skiing area in the village of San Vigilio di Marebbe (Italy) collapsed and moved slowly downwards. Due to this phenomenon, the uphill station and upper pier of a new cableway crossing the ski slope tilted and moved tens of meters down the slope scaring the people of the village and the authorities. The sliding mass, consisting of a mixture of sandstone boulders and remoulded soil permeated by an exceptionally high content of water, stopped at the lower station of the cableway, partially submerging the station itself. The investigations carried out after the collapse provided an insight of the sliding movement together with the measurement of relevant mechanical properties of the soils forming the slope. This geological and geotechnical characterization together with the geometric information of the collapsed mass allowed to tentatively perform numerical simulation of the landslide with the Material Point Method (MPM), that seems to be a powerful tool to properly describe the run-out of the sliding mass. The paper presents and discuss the case history as well as the main results and MPM modelling of the ski slope failure and propagation.

Effect of artificial snowing system on the stability of a ski slope in the Dolomites

Ceccato F.
Conceptualization
;
Cola S.
Investigation
;
Girardi V.
Writing – Original Draft Preparation
;
Simonini P.
Writing – Review & Editing
2021

Abstract

In a Spring day of 2006, early afternoon, the Cianross ski slope, located in the Dolomitic skiing area in the village of San Vigilio di Marebbe (Italy) collapsed and moved slowly downwards. Due to this phenomenon, the uphill station and upper pier of a new cableway crossing the ski slope tilted and moved tens of meters down the slope scaring the people of the village and the authorities. The sliding mass, consisting of a mixture of sandstone boulders and remoulded soil permeated by an exceptionally high content of water, stopped at the lower station of the cableway, partially submerging the station itself. The investigations carried out after the collapse provided an insight of the sliding movement together with the measurement of relevant mechanical properties of the soils forming the slope. This geological and geotechnical characterization together with the geometric information of the collapsed mass allowed to tentatively perform numerical simulation of the landslide with the Material Point Method (MPM), that seems to be a powerful tool to properly describe the run-out of the sliding mass. The paper presents and discuss the case history as well as the main results and MPM modelling of the ski slope failure and propagation.
2021
Proceeding of XIII International Symposium of Landslide
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3399855
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