High-density spatial data collection for monitoring of steep wall movements.

Most mine walls are monitored on a strictly as-necessary basis due to high cost, using methods that can only sample discrete points and may limit interpretation of possible deformation. An alternative is the use of laser imaging systems that provide a dense set of three-dimensional vectors relative to the scanner location. Given the volume of points and high sampling frequency, laser imaging systems offer an unprecedented density of geospatial information coverage. The feasibility of such systems for wall monitoring is discussed with reference to data collected on the steep slopes of the North Dandalup dam in Western Australia.
Most mine walls are monitored on a strictly as-necessary basis due to high cost, using methods that can only sample discrete points and may limit interpretation of possible deformation. An alternative is the use of laser imaging systems that provide a dense set of three-dimensional vectors relative to the scanner location. Given the volume of points and high sampling frequency, laser imaging systems offer an unprecedented density of geospatial information coverage. The feasibility of such systems for wall monitoring is discussed with reference to data collected on the steep slopes of the North Dandalup dam in Western Australia.