From the obtained results of 3D scanning used to assess the
movement and deformation of the scanned roadway section,
the following conclusions were deduced. It is possible to:
accurately define and quantify the floor lift area in front of
the approaching coalface,
observe measurable tilt of middle wooden props,
capture documentable changes in floor dinting during the
period between campaigns,
monitor the deformation of steel arch support, especially
the right side and ceiling arches, confirming the influence
of additional stress away from the goaf of previous
longwall.
As mentioned in the paper, laser scanner has a wide range
use in the mine. It is only to consider the purposes of its use.
There is an uncertainty about its use in places with high
dustiness near the source of pollution (longwall, drilling rig
etc.) or in other places with a high safety risk (rocks fall from
the ceiling, roof fall, rock bursts, outburst etc.). Although the
weaknesses of this survey method were reflected, it is
possible to eliminate or minimise them in the future. On the
other hand, our conclusions, requirements and recommendations are based on the basic safety requirements which
involve scanning in the absolutely necessary and shortest
time.