In rock engineering, three-dimensional laser scanning and photogrammetry can have multiple applications, for instance to investigate rock masses, stability or geotechnical surveys. The collected data can offer a better insight of the “virtual” rock mass and geological structures. Geotechnical surveys provide information about orientation, frequency (spacing), persistence, roughness, number of sets, and size of blocks. All of this can help detect kinematic instabilities and decide how to correct them.
Data about joints can eventually be used in equivalent continuum or discontinuum analyzes of structural failure. In continuum modelling, the rock mass is treated as a continuum with equal properties. In discontinuum modelling, the blocky nature of the system is analyzed. This approach looks at joints either as discrete fracture networks (DFN) or just in their most relevant fractures.
ARTICLE ON HARPACEAS: Stability assessment ofthe entrance to an underground quarry, using FLAC 3D