The German railway system, Deutsche Bundesbahn, is constructing a new high speed main line from Mannheim to Stuttgart which includes thirteen tunnels. The longest one, Freudensteintunnel West has to be driven through rock whose weak porous properties restrict the rate of drilling and the use of water. The drill and blast method of excavation is being used to achieve reasonable progress. The technique using a Tamrock HS 205b maximatic drilling machine is described in detail. Loading out using a CAT 966d fel, the erection of steel arch supports, and the mechanism for dealing with water fissures are discussed. The equipment used in the tunnel for general servicing of the operation is noted. The choice of one large tunnel rather than two small ones in the light of estimated train speeds is considered. (TRRL)

  • Availability:
  • Corporate Authors:

    Mining Journal Limited

    60 Worship Street
    London EC2A 2HD,   England 
  • Authors:
    • Smith, M
  • Publication Date: 1988-3

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00492835
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Mar 31 1990 12:00AM