This paper describes the construction of the 1.6 km long 156 sq m cross section rengershausen railway tunnel near kassel in West Germany. Despite the very unfavourable geological conditions of a Tertiary sand layer in the middle of its alignment, a construction period of 35 months was specified. The standard excavating procedure could not be used in the sand layer; instead, the total section there was divided into several subsections for forward driving, which was then performed in small steps. Vacuum deep wells were installed to reduce the water level. Side galleries were driven ahead first, followed by the crown and the supporting body of the total section. Shotcrete was used to build the tunnel lining and the temporary inner walls; after the whole shotcrete lining was completed, the inner walls were demolished in stages. A liquid aluminate shotcrete accelerator, tricosal t1, was used to ensure that the reaction between the accelerator and the water occurred only at the point of spraying. Experience showed that tricosal's t1 system was more than adequate for meeting the severe requirements of tunnelling.

  • Availability:
  • Corporate Authors:

    Mining Journal Limited

    60 Worship Street
    London EC2A 2HD,   England 
  • Authors:
    • BRAUN, G
    • Strappler, G
  • Publication Date: 1989-6


  • English

Media Info

  • Pagination: p. 212-213
  • Serial:
    • Volume: 2
    • Issue Number: 3
    • ISSN: 0956-8700

Subject/Index Terms

Filing Info

  • Accession Number: 00498780
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Sep 30 1990 12:00AM