Geoinformation for Disaster and Risk Management - ISPRS

It employs numerous computer controlled onlinesensors
such as geodetic totalstations that
automatically measure every few seconds the 3D
coordinates of hundreds of targets installed on
buildings and other structures. Fig. 6 shows the huge
volumes of measured data transferred to and
managed by the system month-by-month, which at
its peak reached 300.000 measurements per month.
In the project the Kronos database server is installed
locally and also maintained by a local administrator.
The many different data sources/providers in the
project are either connected online or obliged to
provide their data in specified data formats to assure
uniform data quality and appropriate data transfer
speeds. From the distributed sources an automatic
data collection service transfers, checks and imports
the data to the database. In case of missing data or
data quality problems, corresponding feedback is
given immediately. After successful data imports all
available online data displays are refreshed (see Fig.
7 and 8) and all further services invoked (e.g. the
alarms).
Conclusion
The two examples described represent best practice
on how a modern information system supports
monitoring and alarming for tunnel construction
sites. Its main advantage is that it accomplishes a
highly efficient site data management where all data
is integrated into one central platform and where
well-organized and systematic data transfer from
and to this platform is realized. No longer is it
necessary to deal with data that is stored in various
different, disconnected and incompatible systems.
Problems arising from time consuming data search,
data loss and inconsistencies, erroneous or
redundant data are avoided. Further advantages are
that all data can be accessed by multiple users, any
time, from anywhere and at the click of a button. All
relevant information is permanently available, which
significantly improves the communication among
experts and decision makers. This intelligent and
extensive alarm system can take into account all
project data. The system thus, contributes
significantly to safer tunnel construction.
Figure 8: The settlements in fig. 7 can be analysed
in combination with the live-display of TBM
performance data
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