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TBM Segment Gaskets

2026-05-27

outline:
TBM Segment Gaskets

TBM Segment Gaskets

TBM Segment Gaskets are high-performance rubber seals installed between concrete segments to prevent water ingress and ensure the structural safety of underground tunnels.

       (一)Primary Applications
  • Metro and Subway Tunnels: Sealing concrete segments in urban rapid transit networks. 
  • Railway and Highway Tunnels: Ensuring water tightness in large-diameter underground transport links. 
  • Utility and Cable Tunnels: Protecting underground power grids, water pipelines, and communication cables from moisture. 
  • Underwater and Deep Drainage Tunnels: Providing high-pressure sealing for subsea, river-crossing, or deep sewage systems. 
  • (二)Key Functions
  • Waterproofing & Leak Prevention : Blocks high-pressure groundwater from entering the tunnel, keeping the interior completely dry. 
  • Load Compression & Stress Distribution : Cushions the contact between concrete segments, distributing the immense geological pressure evenly to prevent the concrete from cracking or chipping. 
  • Long-term Durability & Age Resistance: Resists underground chemical corrosion, microbial attack, and aging to match the 100+ year design life of the tunnel. 
  • Displacement Accomodation : Maintains an effective seal even when tunnel segments experience minor shifting, settlement, or thermal expansion/contraction. 
  • Water-Swelling Capability : Standard EPDM combined with hydrophilic rubber swells upon contact with water, creating a secondary defense line against stubborn leaks. 

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