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Keywords: granite gruss
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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2005, May 18–20, 2005
Paper Number: ISRM-EUROCK-2005-018
... side of each tube at a distance of 24 m. 3 HEADrNG AND SUPPORT Heading and support of the tunnel were carried out by the shotcrete method. With four headings, both tubes were driven starting from the portals (Erichsen & Bachsleitner 200 I ; Schmidtmann & Erichsen 200 I). 3.1 Heading in granite gruss...

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