Mobile LiDAR for underground geomechanics: learnings from the teens and directions for the twenties

Abstract

Mobile LiDAR mapping techniques took a vast step forward during the twenty-teens, from research and development to consumer products. The promise of spatially mapping GPS-denied environments opened a world of possibilities; applications in underground geomechanics has been just one. The sensor technology and associated hardware has improved immensely and the future promises exciting developments. However, the data acquisition is only the first step in what is a whole new workflow applied to underground mining geomechanics. The workflow from data acquisition to final interpretation is not currently an automated, algorithmic process. Rather, it currently requires a conceptual understanding of the hardware, and various data processing methods to arrive at implementable results. The technology provides a valuable tool for aiding mining and geomechanical engineers. Its advantages include greater spatial coverage, detailed rock mass assessments, and safe access to previously inaccessible areas. The twenty-twenties hold great promise for the technology. This paper details the background to how mobile mapping technology has been introduced into underground mining geomechanics. The hardware and processing limitations are discussed with reference to case examples from the author’s experience using the technology. Finally, some speculation is offered into the hardware developments and industry adoption over the coming years.