Rockslide Vals, Tyrol

Project objectives

On Christmas Eve 2017, a rockslide with an estimated volume of 117,000 m³ occurred in the valley of Vals, Tyrol, a valley close to the Brenner Pass at an altitude of more than 1,000 m a.s.l., approximately 40 km south of Innsbruck. The landslide buried the L 230 and came to a halt just before the first residential buildings. iC was assigned to conduct a photogrammetric terrain survey using airborne drones and to create a 3D model of the terrain, the structural conditions, and possible future failure scenarios.

Project description

To plan protective measures and a warning system, a digital terrain model (DTM) was generated from airborne photogrammetric data and processed into a 3D volumetric model. This was followed by a geological structural analysis, incorporating key discontinuities, to assess potential failure mechanisms.

Project data

• Estimated volume of rockslide: 117,000 m³
• Area of interest: approx. 0.25 km²
• Height of slope: approx. 400 m

Services

• Photogrammetric aerial photo via UAV and DTM
• 3D modelling and structural geological analysis and modelling
• Definition and quantification of future failure scenarios
• 3D print of the model. including future failure scenarios