Product Overview

Tunnel Impermeable Membrane is a high-density polyethylene (HDPE) liner designed to prevent water ingress and structural damage in tunnel construction. Engineered for durability and flexibility, it provides reliable waterproofing in complex underground environments, ensuring long-term tunnel stability and safety.

Product Features

• Excellent Waterproofing: Prevents water ingress into tunnels, protecting against structural damage.
• High Durability: Offers exceptional tensile strength and resistance to punctures and tears, ensuring long-term performance.
• Flexible Design: Adapts to curved and irregular surfaces, making it ideal for tunnel applications.
• Chemical and Corrosion Resistance: Withstands exposure to chemicals and corrosive elements commonly found underground.
• Temperature Tolerance: Suitable for a wide range of temperatures, from freezing conditions to high-heat environments.

Product Specifications

• Material: High-Density Polyethylene (HDPE)
• Thickness Range: 1.0 mm to 3.0 mm (Customizable)
• Width: Up to 7 meters (Customizable for seamless installation)
• Length: 50-200 meters (Varies based on project requirements)
• Color: Black (standard), other colors available upon request
• Compliance: Meets ASTM, ISO, and GB standards for waterproofing and durability

Application Areas

• Railway and Highway Tunnels: Waterproofing for underground transportation tunnels to prevent water damage.
• Subway and Metro Systems: Protects underground metro tunnels from water ingress and structural weakening.
• Hydraulic Tunnels: Ensures waterproofing in tunnels designed for water flow or hydropower projects.
• Utility Tunnels: Provides a protective layer for tunnels housing utilities like cables and pipelines.
• Mining and Underground Works: Prevents water seepage in mining tunnels and underground excavation sites.

Installation Recommendations

1. Surface Preparation: Ensure the tunnel walls and ceiling are smooth, free of sharp objects, and properly compacted to prevent punctures.
2. Membrane Deployment: Carefully unroll the impermeable membrane along the tunnel walls and ceiling, ensuring tight and wrinkle-free installation.
3. Seam Welding: Use hot wedge or extrusion welding to seal seams securely, ensuring leak-proof integrity.
4. Anchoring: Fix the membrane in place using mechanical fasteners or anchor strips to prevent displacement during construction.
5. Inspection and Testing: Conduct regular inspections during installation to check for defects or leaks. Use air or vacuum testing for seam quality assurance.
6. Protective Covering: Add a concrete protective layer over the membrane to enhance durability and safeguard against mechanical damage.