In Obersiggenthal,
CH several benches of a quarry were recorded from a
distance of 300 m.
The resulting 3D models show the pit walls correctly
posed to each other and georefenced.
The whole data acquisition is performed conveniently
within a day.
Figure 1: Overall-view of three benches
georeferenced and correctly posed to each other.
The inclination of the lowest wall is indicated.
Figure
2: Detailed view of the second bench with
marked discontinuities.
From the
3D model measurements are taken easily using the JMX
Analyst software.
In a simple manner the inclination of the pit wall is
determined (see figure 1).
During analysis rapid change between a detailed view
and an over-all view is possible.
Beside the improved data quality mapping time is reduced
and safety increased.
The analysis
allows to measure discontinuities both from joint surfaces
and from traces.
Fastly a structure map is ready from which among others
spacing and discontinuity frequency is determined.
Figure
3: Close-up of the pitwall with an orientation measurement
(dip and dip direction) determined from a discontinuity
trace.
Figure
4: Sectional representation that is generated automatically
from the discontinuity traces used for determining spacing
and discontinuity frequency.
Figure 5: Total
view of a single bench
Figure 5: False
colour representation as
graphical overlay visualises instantly
the quality of the pit wall.
