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Ground Penetrating Radar for Site Investigations and Utility Locating – Case Studies from Leipzig and Dresden
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 1st Conference on Geophysics for Infrastructure Planning Monitoring and BIM, Sep 2019, Volume 2019, p.1 - 5
Abstract
Especially in urban areas, where the survey areas are often covered by concrete or asphalt, ground penetrating radar (GPR) is an ideal, sometimes the only, geophysical method for site investigations and for locating buried utilities. In the two case studies presented, construction works for traffic infrastructure are planned at busy traffic intersections in the inner-cities of Leipzig and Dresden by the respective municipal transportation companies and it was required to explore the shallow soil stratigraphy, to locate old foundation structures as well as to verify existing documentation of pipe and cable networks. These objectives could be met by GPR surveys in a very efficient way. The structure of a completely covered historic bridge was imaged, old foundations of a theater destroyed in WW II and a former pedestrian bridge were identified, the documentation of pipes and cables was refined and an undocumented cable was found. By means of a D-GPS surveying, which is synchronized to the GPR system, the results of the GPR investigations are immediately available with a highly precise spatial reference and can easily be incorporated into a building information model (BIM).