Leoben, Austria


Leoben, Austria
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Charalambides A.,CMT Copenhagen Metro Team | Chmelina K.,Geodata Group | Rabensteiner K.,Geodata Group | Amrhein M.,Angermeier Ingenieure
Underground - The Way to the Future: Proceedings of the World Tunnel Congress, WTC 2013 | Year: 2013

The paper presents the monitoring and corresponding monitoring data management that is currently executed at the Cityringen project in Copenhagen, Denmark. In particular, it informs on the installed GEOROBOT systems for monitoring 3-d deformations on surface structures and on the requirements, layout, functions and services of the installed tunnel information system KRONOS applied for monitoring data management. It is further shown how and by whom the tunnel information system is used and how it contributes to safety in the project by automating monitoring processes to a high degree, by assuring an ultimate availability of high-quality monitoring information and by providing suitable alarming services. Finally, the most relevant difficulties that occurred in the still very early stage of the Cityringen project as well as the first benefits from using the monitoring database Kronos are mentioned. For looking into the future, the most important research trends and activities aiming to further improve monitoring and tunnel information system technology are discussed. © 2013 Taylor & Francis Group.

Rabensteiner K.,Geodata Group | Notarianni S.,CMT Copenhagen Metro Team
Geomechanik und Tunnelbau | Year: 2013

The Cityringen project will link the historic old city centre of Copenhagen with the outskirts and provide rapid and safe transport for 240,000 passengers per day. The existing Metro network will be extended with 17 new stations with average dimensions of 65 m × 20 m. Two single-track tunnels each 15.5 km long and 5.50 m diameter will be bored by altogether four EPB-TBMs working at the same time. In addition, three construction and ventilation shafts, a ramp structure and subsidiary structures are to be constructed. An introduction to the project will be followed by a report of the current state of the design and construction works. Particularly worth mentioning are the extensive dewatering measures at the shafts and station structures. Another important point is the dense monitoring programme provided for the reliable control of the construction works. The various geotechnical and geodetic sensors and measuring systems are also described and also the largely automatic recording, transmission and processing of the data. We then show how an automatic tunnel information system can link high-quality measured data with many other sources of data and information about construction progress and make it available over the Internet to ensure continuous safety of the construction works through risk management. © 2013 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin.

Neumayr R.,University of Leoben | Harker M.,University of Leoben | O'Leary P.,University of Leoben | Golser J.,GEODATA Group
2012 IEEE I2MTC - International Instrumentation and Measurement Technology Conference, Proceedings | Year: 2012

The paper describes the design and manufacturing of optical components; calibration and evaluation procedures; together with thermally stable housings. All these elements are required for the implementation of accurate optical displacement and orientation sensors. Printed hexagonal and rectangular dot-patterns on optical glass are investigated with respect to their spatial scattering properties of an incident laser beam, and as a means of implementing semi-transparent windows to image laser spots on two parallel targets. The positions of the laser spots are observed by two cameras. The mapping from pixel coordinates to real world coordinates is implemented via a bivariate tensor polynomial product, whereby the calibration coefficients are determined in a manner such that the distortion associated with the optical component, e.g., lens distortion is compensated. The covariance propagation is explicitly computed for the calibration process and used to optimize the selection of the polynomial degree. This reflects the trade-off minimizing between the systematic and stochastic errors. The new technique and methods are demonstrated in the design of and implementation of an active optical laser target for machine guidance control. This measurement instrument, rigidly fixed on a Tunnel Boring Machine (TBM), measures the orientation and position of the machine where an off-vehicle reference laser beam is projecting its laser spots on two parallel targets. Precise vision-based measurements of the laser spot positions are achieved, yielding a standard deviation of the displacement error of 0.05 [mm] and for yaw and pitch of 0.02 [degree]. © 2012 IEEE.

Chmelina K.,Geodata Group | Rabensteiner K.,Geodata Group | Krusche G.,Geodata Group
Geotechnical and Geological Engineering | Year: 2012

The contribution presents the current state and latest capabilities of information technology (particularly tunnel information systems) used for urban tunnel projects. In detail, it informs on the system architecture and the latest data management, monitoring, alarming and reporting functions and services of the tunnel information system KRONOS of Geodata. To assess the systems' benefits, installation examples and experiences from four currently running, urban European tunnelling projects are described. Finally, the most recent and promising R&D activities in this field are emphasized. © 2012 Springer Science+Business Media B.V.

Rabensteiner K.,Geodata Group | Chmelina K.,Geodata Group
Geomechanik und Tunnelbau | Year: 2016

Urban tunnel projects such as new metro lines face particular challenges. Shallow overburden, difficult (hydro)geological conditions and sensitive buildings in close proximity are risks that often cannot be avoided, demanding large and complex geotechnical monitoring programmes. This paper considers the current situation of tunnel monitoring in urban environments and describes two specific monitoring solutions, one for shafts and one for structures, and emphasises the importance of efficient data management with the assistance of a tunnel information system. Finally, the paper gives an overview of recent research activity and emerging sensing technologies. © 2016 Ernst & Sohn Verlag für Architektur und technische Wissenschaften GmbH & Co. KG, Berlin.

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