Modern Mining May 2017 Final

53 / 60

May 2017 MODERN MINING51
PRODUCT News
Accurate 3D spatial monitoring
with new Sentry system
Maptek’s recently upgraded Sentry monitoring system is a laser-based
solution for the constant surface monitoring required by geotechnical
teams and mine management for managing risk. Intuitive 3D visuali-
sation of movement and powerful analysis tools are combined in one
easy to use, turnkey solution.
The Sentry DMS (Deployable Monitoring System) was unveiled
in March this year alongside the third generation Maptek I-Site laser
scanners.
Deployed in a custom trailer, the system offers a power and com-
munications module, cellular and wi-fi networking, a dedicated, stable
bollard for an I-Site laser scanner and Sentry software. The trailer is
driven to the desired monitoring location and parked. Users can
unpack the system and start monitoring in 15 minutes.
“Geotechs welcome the idea of a system where they can just hit
the button to start monitoring. Quick and easy setup is ensured by
the new configuration and there is no need for the surveyor to orga-
nise the workshop to build a bollard for mounting the scanner,” says
Maptek.“Alert levels and rules are easily defined, allowing critical infor-
mation to be sent direct to geotechnical staff or mine managers so
they can decide on action to be taken.”
Sentry allows users to analyse the mechanics of wall failures with
greater fidelity than other systems. Generating 3D digital terrain
models (DTMs) or overlaying 3D imagery on heat maps coloured by
displacement or velocity provides an overview of movement. Zones
can be animated over time to show morphology of terrain changes
and this information then used to predict movement in other areas.
The captured laser scan data can be used for any number of other
spatial monitoring tasks, such as per shift dig reconciliation, design
conformance, geological mapping and kinematic analysis.
Sentry helps site personnel monitor and report on movements
caused by surface instability that have the potential to interrupt
operations. It can be applied to mining and civil engineering projects
including road cuttings, land slips, dam walls and tunnel openings.
Sentry monitors multiple zones within a scene without the need for
targets or reference points. Movement can be detected down to 1 mm
per hour. While radar systems can monitor even smaller movements,
they have limitations when there are large movements.
Maptek, tel (+27 11) 750-9660, website:
The Sentry monitoring system is
deployed in a custom trailer.