Ground Freezing to Help Heat Vienna

This article describes a new method of ground freezing on a project in Vienna in 2005 requiring excavation of 1,500 meters of tunnels and another 160 meters of open-cut tunneling for a heating system in the city. The nature of the ground to be tunneled through required freezing, but without interference with the shield drive by the steel freeze pipes. The idea was to create an ice block directly ahead of the diaphragm wall in such a way that it didn’t interfere with the tunneling machinery. Synthetic sealing lances were used instead of conventional steel ones. Details include the design of the diaphragm wall shafts, the tunnel drives and the shaft linings.


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  • Accession Number: 01044899
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Files: BTRIS, TRIS
  • Created Date: Mar 22 2007 1:47PM