NAPLES-BARI HIGH-SPEED RAILWAY LINE
The project is about the monitoring
of a slope, which is interested by a
quiescent landslide, crossed by a
tunnel under construction. This
gallery takes part of new highspeed
train line Napoli-Bari.
In order to verify the design
hypothesis and control the
deformations potentially induced
by the excavation, the contractor
installed a MUMS system
composed by 4 Vertical Arrays and
4 Piezo Arrays.
Vertical Arrays are distributed
along the cross the slope which is
crossed by the underground
excavation.
MUMS system permits the real
time monitoring of the area, with
Early Warning procedures.
The site is instrumented with 4
Vertical Array MUMS inclinometers,
with a length included between 30
and 80 m.
The Arrays are equipped with a
variable number of tilt sensors,
equipped with 3D MEMS (Tilt Link
V). Some verticals have 31 sensors,
while some others are equipped
with 81 nodes. The interspace
varies between 0.5, m along the
suspected sliding surface, to 2 m in
the zones that should be stable.
Finally, there are 4 Piezo Arrays
equipped with 2 analog piezometers
each one.
Control units query nodes at
defined time intervals, saving them
into a SD card. Data are transmitted
with UMTS connection to the
elaboration centre, where an
automatic software elaborates
them. Results are available on a
web platform in a few minutes.
LOCATION
Galleria Grottaminarda (AV), Italy
CLIENT
Consorzio Sondedile – Geotec – Trivel sondaggi - Geoserving
RESPONSIBLE FOR MONITORING
Hirpinia AV
START OF MONITORING
January 2020
SYSTEMS USED
SENSORS
CONTROL UNIT
G801