What is segmental liner tunnel?

Tunnel lining is used in both trenchless construction and rehabilitation to maintain the shape of the tunnel and to shield whatever might pass through it. Segmental liners are prefabricated structural support pieces that are combined to form a complete tube along the tunnel passage.

Our Accomplishments:

• With the past 30 years, SCG has completed various subway tunnels, cross-river tunnels, power cable tunnels, drainage tunnels, and non-standard diameter liner tunnels
• SCG established specifications for key construction elements such as ventilation, measurement, electricity, transportation within a horizontal tube, and sealing systems for segmental liner tunnels.
• Constructed several Smaller diameter segmental liner tunnels, such as:
  • Shanghai Natural Gas Pipeline Tunnel B Line Project, tunnel ID 3400mm;
  • Yangpu power plant across the river canal project, tunnel ID 2900mm;
  • Shanghai Lingang gas power plant project, tunnel ID 3600mm;
  • Shenzhen Reservoir Sewage Interception Watershed Project, tunnel ID 4000mm;
  • And other plants, sewage treatment works tunnel ID 4200mm
• Constructed several larger diameter segmental liner tunnels, such as:
  • Sanmen Nuclear Power Water Intaking Project, tunnel OD 7260mm；
  • Qinshan Nuclear Power Plant Expansion Project, tunnel OD 8280mm；
  • Renmin Road and Long Yang Road cross-river tunnel, tunnel OD 11580mm；
  • Shanghai rail line south of the 11th section of Tender 5, Tender 10, tunnel OD 11580mm