When tunnels are built underground, whether during the construction of a new mine or as part of an expansion project, convergence monitoring is vital. As it is, mine tunnels have many stresses placed on them, and this can be aggravated by the construction process damaging and disrupting the surrounding natural geology. Continual monitoring can confirm that any convergence occurring is within tolerable limits and as expected during the planning phase and serve as an early warning system if it is not.
But convergence monitoring can also be time-consuming, tie up valuable manpower, and disruptive if those performing the monitoring get in the way of construction activities. With this in mind, it makes sense to integrate and automate the data-gathering process wherever possible, and this can be easily achieved by making use of a uGPS Rapid Mapper™ 3D mobile mine scanner.
This rugged, easy-to-use scanner is LiDAR laser-based and can be simply attached to a mine vehicle (only a mounting point and power cable are required for installation) and then used as the vehicle drives through the mine as part of construction, supervisory, or other activities – all the vehicle operator has to do is turn it on. While the vehicle is in motion, the scanner will generate vast amounts of point-cloud data with minimal user intervention.
Scanning in this way delivers an easy-to-implement, automated convergence monitoring solution that will make engineers aware of and able to react to any structural deformation without hampering the progress of construction operations.