NIPPON TUNNEL LINING METHOD (NTLM)

Japan's answer to problems resulting from the use of the New Austrian Tunnelling Method (NATM), wasteful rebound, hazardous, and dusty working conditions, is the Nippon Tunnel Lining Method (NTLM). This method provides a primary lining designed to prevent loosening of the ground by sealing up the uneven excavated surface with the circular thin layer of the supporting concrete, maintains the strength of the ground against weathering, deterioration and failure caused by the concentration of stress on the excavated surface and ensures even distribution and reduction of earth pressure on the main lining. Several circular travelling forms, trowel forms and arch forms are described. Each method shows no loss of material due to rebound and no dust.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0041414X
• Corporate Authors:

  Morgan-Grampian (Construction Press) Limited

  Morgan-Grampian House, 30 Calderwood Street
  London SE18 6QH,   England 
• Authors:
  • Martin, David
• Publication Date: 1989-12

Media Info

• Features: Figures;
• Pagination: p. 50-51
• Serial:
  • Tunnels & Tunnelling International
  • Volume: 21
  • Issue Number: 12
  • Publisher: Progressive Media Markets, Ltd
  • ISSN: 0041-414X

Subject/Index Terms

• TRT Terms: Dust; Innovation; Tunnel lining; Tunneling
• Old TRIS Terms: Arch forms; Circular forms; Trowel forms
• Subject Areas: Bridges and other structures; Construction; Highways;

Filing Info

• Accession Number: 00491319
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 28 1990 12:00AM