Australia's #1 industrial directory for equipment & suppliers

The Hokuriku Shinkansen Iiyama Rail Tunnel Project

Supplier: Elastoplastic Concrete
19 October, 2009

Construction on the Iiyama tunnel started in 2000. It forms part of theHokuriku Shinkansen railway project, which will connect Tokyo andOsaka via the Japan Sea coast – a distance of about 590km.

The Hokuriku Shinkansen Iiyama Rail Tunnel Project

  • Length: 22.50 km at a depth of 325 metres
  • Date: February 2001 – September 2004
  • Use: Primary Lining
  • Dose: 9kg / m3 (1.0%)
  • Fibre type: Barchip M 30 mm
  • Volume: 51,992 m3
  • Location: Nagano Prefecture
  • Contractor: Taisei / Obayashi JV
  • Client: Rail Road Construction Co.

Construction on the Iiyama tunnel started in 2000. It forms part of the Hokuriku Shinkansen railway project, which will connect Tokyo and Osaka via the Japan Sea coast – a distance of about 590km.

Ground conditions on the tunnel's alignment are affected by squeezing ground pressure. Construction is being carried out by full-face excavation with a short bench to keep ground-loosening to a minimum.

The tunnel also has a fairly large cross-section (estimated at about 150m2) to allow for primary support deformation, and where necessary the need for secondary support.

To Know about The Hokuriku Shinkansen Iiyama Rail Tunnel Project Please click here