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Author(s):	Mark, Peter; Niemeier, Wolfgang; Schindler, Steffen; Blome, Andrea; Heek, Peter; Krivenko, Alexander; Ziem, Eberhard
Title:	Radarinterferometrie zum Setzungsmonitoring beim Tunnelbau
Abstract:	Nach der Methode der “Persistent Scatterer”-Interferometrie wird ein innovativer Ansatz zum flächenhaften Setzungsmonitoring beim Tunnelbau vorgestellt. Grundlage sind Daten aus 24 Überflügen des Radarsatelliten TerraSAR-X des Deutschen Zentrums für Luft- und Raumfahrt (DLR). Die Leistungsfähigkeit dieses Verfahrens wird am Beispiel des Tunnelbauprojekts “Wehrhahn-Linie” in Düsseldorf demonstriert. Der Beitrag beschreibt neben den wesentlichen Grundlagen zur Radarinterferometrie auch die besonderen Randbedingungen des Tunnelbauprojekts im Innenstadtbereich der Landeshauptstadt. Die Verifizierung mit punktuellen terrestrischen Messungen belegt die Genauigkeit der Methode im Millimeterbereich. Die Forschungsarbeiten sind Teil der Aktivitäten des Sonderforschungsbereichs 837 “Interaktionsmodelle im maschinellen Tunnelbau” an der Ruhr-Universität Bochum. Radar interferometry for monitoring of settlements in tunnelling An innovative approach employing the “Persistent Scatterer” Interferometry to monitor area-wide settlements induced by tunnelling is presented. The method is based on data from 24 overflights of the TerraSAR-X satellite provided by the German Aerospace Center (DLR). Exemplified on the tunnelling construction site “Wehrhahn-Linie” located in Düsseldorf, the performance of the Radar-Interferometry method is demonstrated. Besides the basic principles of the Radar-Interferometry, the contribution illustrates specific boundary conditions of a tunnelling project in the intra-urban area of the state capital city of Düsseldorf. The validation with point wise terrestrial measurements proofs that the method is accurate to a millimetre. The research project is part of the Collaborative Research Center 837 “Interaction modelling in mechanized tunnelling” at the Ruhr-University of Bochum.
Source:	Bautechnik 89 (2012), No. 11
Page/s:	764-776
Language of Publication:	German

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