THE KAIMAI TUNNEL BORING MACHINE

A full-face hard-rock tunnel boring machine (jarva mk21) was used to excavate the Kaimai Tunnel. Back-up equipment to serve this machine was designed and built in New Zealand. The machine was not successful in boring the hard and blocky andesite of the western end of the tunnel but it readily handled the softer ignimbrites of the eastern end. Operations from the eastern end of the tunnel were severely hampered in the early stages by major breakdowns. Assessment of the machine's performance revealed that, although not as spectacular as was envisaged, it met expectations and justified the use of this tunnelling method at Kaimai. An illustrated article describes the machine and its operation.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0028808X
• Corporate Authors:

  Technical Publications Limited

  C.P.O. 3047
  Wellington,   New Zealand 
• Authors:
  • Harrison, K J
  • Taylor, REC
• Publication Date: 1978-3

Language

• English

Media Info

• Features: Figures; Photos;
• Pagination: p. 50-55
• Serial:
  • NEW ZEALAND ENGINEERING
  • Volume: 33
  • Issue Number: 3
  • Publisher: Institution of Professional Engineers New Zealand
  • ISSN: 0028-808X

Subject/Index Terms

• TRT Terms: Drilling; Equipment; Mass; Performance; Rocks; Tunneling; Tunneling machines; Tunnels
• Uncontrolled Terms: Rock mass
• Geographic Terms: New Zealand
• ITRD Terms: 3871: Drilling; 3674: Equipment; 8079: New Zealand; 3374: Tunnel
• Subject Areas: Bridges and other structures; Construction; Geotechnology; Highways; Vehicles and Equipment; I54: Construction of Tunnels;

Filing Info

• Accession Number: 00189219
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Apr 12 1979 12:00AM