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Geotechnical News • June 2016
GEOTECHNICAL INSTRUMENTATION NEWS
Table 6. Some instruments that can be considered for monitoring cut slopes in rock
Possible geotechnical questions
Measurement
Some instruments that can be considered
What are the initial site conditions?
Joint water pressure
Surface displacement
Subsurface displacement
Open standpipe piezometers
Vibrating wire piezometers installed by the
fully-grouted method
(Pneumatic piezometers)
Conventional surveying methods
Remote methods
Crack gauges
(Tiltmeters)
(Fiber-optic instruments)
Fixed borehole extensometers
In-place inclinometers
(Acoustic emission monitoring)
(Time domain reflectometry)
(Fiber-optic instruments)
Is the slope stable during excavation? Surface displacement
Subsurface displacement
Joint water pressure
Conventional surveying methods
Remote methods
Crack gauges
(Tiltmeters)
(Time domain reflectometry)
(Fiber-optic instruments)
Fixed borehole extensometers
In-place inclinometers
(Acoustic emission monitoring)
(Time domain reflectometry)
(Fiber-optic instruments)
Vibrating wire piezometers installed by the
fully-grouted method
Is the slope stable in the long term?
As for “Is the slope stable during
excavation?”
Rainfall, for possible correlation
with any displacement
Load in tiebacks
As for “Is the slope stable during excavation?”
Rain gauges
Load cells
