Civil Engineering Reference
In-Depth Information
(a)
(b)
Constant
velocity
Movement
vector
8
Acceleration
Vertical
angle
2.0
6
Instrument
station
4
1.0
2
Failure
surface
0
(m/day)
0123456789
Time (days)
(c)
(d)
400
400
Contours of slope
movement (interval
0.01 m/day)
Toppling
300
Movement vector
200
N
100
Pit
bottom
500
Haul road
Figure 13.8
Interpretation of movement monitoring data: (a) displacement and velocity plots show onset of
regressive movement; (b) movement vectors showing circular failure mechanism; (c) movement vectors showing
toppling failure mechanism; (d) slope velocity contours show extent of slope movement (Wyllie and
Munn, 1979).
in the dimensions of the slide, and/or a change in
the most rapidly moving area. This information
will assist in the planning of mining operations,
for example, to complete mining in the south-east
corner of the pit before failure occurs. Also, if the
haul road is on a relatively slowly moving part
of the slide, this may allow time to develop new
access to the pit.
