Tunnel Waterproofing

Specialized protection for cut-and-cover, bored, and mined tunnels.

System Overview

High-performance waterproofing systems engineered for the extreme conditions of underground infrastructure. Our solutions cater to various tunnel construction methods, providing a continuous, watertight envelope that resists high hydrostatic pressure and aggressive groundwater chemistry.

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Typical Layers Diagram

[ TUNNEL LINING CROSS-SECTION ]

  • Layer 1: Primary Lining (Shotcrete)
  • Layer 2: Geotextile Fleece
  • Layer 3: PVC/TPO Waterproofing Membrane
  • Layer 4: Protection Sheet
  • Layer 5: Waterstop Profiles
  • Layer 6: Secondary Lining (Concrete)

System Advantages

Double-Shell Security

Integrated drainage and compartmentalization systems for maximum reliability.

Dynamic Resistance

Accommodates structural movements and vibrations common in tunnel environments.

100+ Year Service Life

Designed for extreme durability and minimal maintenance over decades of use.

Recommended Products

Awazel Tunnel-PVC

Signal Layer Membrane

Awazel Geo-Fleece

Protective Layer

Awazel Injek-Hose

Joint Grouting System

Installation Guide

Tunneling requires specialized equipment and highly trained crews for membrane welding and testing.

  • Surface preparation of primary lining
  • Fixing of geotextile and membrane
  • Automatic wedge welding of joints
  • Vacuum/Pressure testing of all welds
Download Tunneling Method Statement

Technical Drawings

Emergency Niche Detail

Tunnel Portal Connection

Segmental Joint Detail

Technical Downloads

Tunneling Handbook

Safety Protocols

Method Statement

International Approvals

System Inquiry

Need a customized specification for your tunneling project? Our technical team is ready to assist you with design support and product selection.

Request a Technical Call-back