The monitoring of the portal structure is carried out by prisms installed into the shot concrete slope and the surrounding embankment which are measured by a robotic total station in real time.
During the mining activities the observation of the shot concrete wallwork of the tunnel is done by 5 symmetrically installed prisms in every cross section every 10 meters. These are measured continuously by the preinstalled robotic total station in real time.
The total stations are connected to a central data aggregator unit through wireless connection. From there data is transmitted to the cloud, and into SURVIOT using FTP protocol. At the section of the Bécs hill above the tunnel 52 surface points are monitored by SURVIOT’s GNSSPODs using multi-constellation GNSS measurements.
GNSSPODs are remotely monitored hardware units which require periodic battery change as the only maintenance activity. Data connection for the PODs is available through mobile 2G-3G-4G network. Data transmission is done through our own protocol. The heart of the unit is a multi-constellation GNSS receiver equipped with a calibrated GNSS antenna. The accuracy of the system has been certified by the Hungarian GNSS Service Centre.
The automated reading of water levels of groundwater wells is done by SURVIOT WELLPODs. Currently 2 PODs send water level data into the SURVIOT data server using piezometric pressure sensors.
The system also receives data from a locally installed meteorological station which makes it possible to correlate weather data with the movement data series. This allows engineers to separate movements due to ground saturation changes from movement caused by construction activities.
Data processing, visualization, reporting, notifications, statistical and engineering calculations are done by the SURVIOT platform.
With continuous availability of our software SURVIOT saved numerous hours of work.
On the total portal structure and on the surrounding slope. 5 prisms in each cross-section, every 10 meters.
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