Authors
Benton DJ; Iverson S; Johnson JC; Martin LA
Source
Proceedings of the 33rd International Conference on Ground Control in Mining, July 29-31, 2014, Morgantown, West Virginia. Morgantown, WV: West Virginia University, 2014 Jul; :1-7
Abstract
Photogrammetric methods are advancing rapidly and show considerable promise as a ground control research tool. The ability to quickly capture three-dimensional geometry, especially changes in geometry, in underground and laboratory settings is a significant advance from point distance measurements. Photogrammetry is being applied in both of these settings as part of the NIOSH ground control research. This paper describes these applications and the equipment and software being employed. It also describes tests conducted to quantify the accuracy of these systems. Accuracy varied with system specifics and procedures. A factory-calibrated camera produced results within 1/32 of an inch, plus 0.04%. A user-calibrated camera was found to be less accurate, at 1/20 of an inch, plus 0.24%. These calibrations demonstrate that photogrammetry can produce research quality measurements in laboratory and mine settings.
Keywords
Mining-industry; Underground-mining; Ground-control; Ground-stability; Geology; Stone-mines; Computer-software; Computer-models; Models; Laboratories; Monitoring-systems; Photographic-equipment
Document Type
Conference/Symposia Proceedings
Source Name
Proceedings of the 33rd International Conference on Ground Control in Mining, July 29-31, 2014, Morgantown, West Virginia
