Application of 3D laser scanner, optical transducers and digital image processing techniques in physical modelling of mining-related strata movement

A physical testing protocol for modelling mining-related problems has been presented. • A new method for monitoring fracture propagation pattern has been introduced. • Laser based and optical devices have been used for physical modelling of subsidence. • Multiple-seam subsidence has been measured by photogrammetry, DIC analysis, optoNCDT and 3D TLS.