Digital Terrestrial Photogrammetry and Laser Scanning techniques for the characterization of instable rock volumes [Integrazione tra tecniche di Fotogrammetria Digitale Terrestre e Laser Scanning per la caratterizzazione dei volumi di roccia instabili]

Aim of the study is the analysis of brittle structures for the exploitation and the evaluation of rock slopes stability by deterministic approach. This is achieved through both photogrammetric and laser scanning techniques in order to obtain a detailed geometrical survey of jointing systems, slopes and potential blocks and wedges. Based on these techniques, detailed digital elevation models and orthophotos can be created and then they can be used as data source for studying the rocky slope stability. Considering the inaccessibility of most part of the rocky slopes, the photogrammetric equipment has been mounted on an aerostatic balloon or an helicopter. The laser scanned the surfaces from the ground thanks to its wide range working methods.