Combined video and laser camera for inspection of old mine shafts

Laurent Cauvin (1)

1 INERIS - Institut National de l'Environnement Industriel et des Risques

For the cases where the location of a shaft is known but not its fundamentals characteristics, INERIS has developed a combined video and laser camera to face with problems of characterization of body of shafts or underground cavities. The system is able to product videos, pictures, punctual manual measures, and automatic measure cycles to establish cross-sections, profiles and contour lines as well as the estimate volume of voids in dry or flooded cavities. For inspection of shafts, developments are within the framework of MISSTER1 project (RFCS, Research Fund for Coal and Steel). The work is principally based on the development of the second camera for flooded voids. The development of the data analysis systems to obtain direct results like cross section and also obtain a direct geo-referenced 3D point cloud to fit into existing GIS is based on field's tests in old shallow mines.

Mots clés: VIDEO INSPECTION; LASER MEASURING; MINE SHAFTS

Domaines: Sciences de la Terre; Sciences de l'environnement

Laurent Cauvin. Combined video and laser camera for inspection of old mine shafts. 3. International Conference on Shaft Design and Construction (SDC 2012), Apr 2012, Londres, United Kingdom. pp.NC. ⟨ineris-00973662⟩