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Geotechnical News • June 2016
GEOTECHNICAL INSTRUMENTATION NEWS
Table 4. Some instruments that can be considered for monitoring cut slopes in soil
Possible geotechnical
questions
Measurement
Some instruments that can be considered
What are the initial site
conditions?
Pore water pressure
Surface displacement
Subsurface displacement
Open standpipe piezometers
Vibrating wire piezometers installed by the fully-grouted
method
Flushable piezometers
(Pneumatic piezometers)
Conventional surveying methods
Remote methods
(Tiltmeters)
(Fiber-optic instruments)
Inclinometers
In-place inclinometers
(Time domain reflectometry)
(Fiber-optic instruments)
Is the slope stable during
excavation?
Surface displacement
Subsurface displacement
Pore water pressure
Conventional surveying methods
Remote methods
(Tiltmeters)
(Time domain reflectometry)
(Fiber-optic instruments)
Inclinometers
In-place inclinometers
(Time domain reflectometry)
(Fiber-optic instruments)
Vibrating wire piezometers installed by the fully-grouted
method
Flushable piezometers
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
