MAINTENANCE OF TUNNELS WITH THE HELP OF SPATIAL
INFORMATION SYSTEMS
Prof. Gerd KEHNE, Germany
Key words: Maintenance, GIS, tunnel, traffic lines.
Abstract
Tunnels are buildings of high value. To preserve this value and to
keep the safety for drivers and passengers maintenance has to be
executed. For this maintenance a strategy should be determined. In
Germany this is given by DIN 1076. For the runner of a tunnel do the
examinations and inspections are left to be done. This leads to a
documentation of the results which are of diverse kinds like
- filled out forms
- manual descriptions
- drawn drafts
- raster data like pictures
The results of the inspections are a documentation of discovered
damages. They are classified in categories such as
- urgent, immediately to be repaired
- not urgent, but to be repaired in the medium term
- to be watched, to be repaired in the long term.
The classification is of course a balance between the budget of
maintenance and the safety.
As the stored data are very heterogeneous it is difficult to select
and combine them. The modern techniques of GIS allow to solve these
problems. So an information system for supporting the maintenance can
be described and created.
The demands on this system are:
- Regular maintenance to be projected into the system
- An integration of data to allow selecting and combining the data
- Tools and support for description and classifying discovered
damages
- Fulfilling the task of data integrity
- Total embedding into the workflows of maintenance
- Getting user defined sights of geometric and alphanumeric data
Especially the integration of data is important for comparing
damages the whole time with the comparison of different damages in
order to find their reasons. This might lead to an improvement of the
strategy of maintenance or of the techniques of building tunnels.
Following the demands leads to the usage of modern
3D-GIS-techniques. For this the tunnel and all installed equipment
have to be modelled. This means that all objects have to be defined,
described and differentiated from others. Additionally attributive
descriptions and the graphic geometric layout have to be fixed in
detail as well as the connections between the objects. Realizing the
model into a information system demands a functional model, which lead
to a user shell. Finally a new workflow for the maintenance has to be
found in order to get the positive effects of using the system.
Using the system within a workflow of maintenance means using it
for controlling the time cycles. Damages have to be modelled as
defined objects. So with their attributive information the control of
change has to be made. From these data statistics of the development
of damages can easily be drawn up. This leads to an estimation of
future repairing works, which means that a better planning of the
budget is possible.
BIOGRAPHICAL NOTE
Kehne Gerd, born in 1958, study of Geodesy in Braunschweig
& Hannover in 1978-1984. 1989 doctorate (Dr.-Ing.) at the
Technical University of Braunschweig with a theses about collecting
data of existing buildings aiming to project an information systems
for buildings. 1989 - 1994 working at private offices on questions of
GIS.. Since 1994 Professor at the Fachhochschule Frankfurt am Main,
University of Applied Sciences for the subjects of Geo-Information.
CONTACT
Prof. Dr.-Ing. Gerd Kehne
Fachbereich G
Fachhochschule Frankfurt am Main - University of Applied Sciences
Nibelungenplatz 1
D-60318 Frankfurt am Main
GERMANY
Tel. + 49 69 1533 2342
E-mail: kehne@fbg.fh-frankfurt.de
Internet: http://www.fbg.fh-frankfurt.de/wir/kehnep/kehne.html
23 March 2001
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