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Date

19.01.2018

Break through at tunnel Vötting in Freising, Bavaria

Shortly after welcoming the new year 2018 we broke through the calotte of tunnel Vötting. The part built with NATM was 458 m long, with cross section around 100 sqm. In the upcoming weeks the works will proceed with excavation of lower parts of the tube. The excavation of the calotte was a big challenge due to the geological situation - we had to proceed very carefully and divide the face heading into 6 partial areas. Spits grouted with acrylate protected the excavation. Additional securing was carried out with grouted stay sills. 
 
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