Product Overview

The Tunnel Waterproofing Membrane is a high-performance, durable, and flexible membrane system specifically designed for waterproofing underground structures, particularly tunnels. It provides a reliable barrier against water ingress, ensuring the long-term stability and safety of tunnel systems. Made from high-quality materials such as HDPE (High-Density Polyethylene) or PVC, the membrane is engineered to withstand the high mechanical stress, extreme temperatures, and potential chemical exposure typically encountered in tunnel environments. The Tunnel Waterproofing Membrane is commonly used in various infrastructure projects, including railways, highways, subways, and utility tunnels, offering reliable protection against water, moisture, and other contaminants.

Product Features

• Excellent Waterproofing: The Tunnel Waterproofing Membrane effectively prevents water penetration, ensuring that underground tunnels remain dry and protected from water-related damage.
• High Flexibility: The membrane is highly flexible, allowing it to adapt to the movements and shifts of the tunnel structure, ensuring that it remains intact over time.
• Chemical Resistance: It offers excellent resistance to a wide range of chemicals, including waterborne salts, acids, and other industrial chemicals commonly encountered in tunnels and underground environments.
• Durability: Designed for long-term use, the membrane is resistant to wear, abrasion, and aging, maintaining its effectiveness even under harsh environmental conditions.
• High Mechanical Strength: The membrane provides strong resistance to mechanical stress, punctures, and tears, ensuring reliable performance even under high-pressure conditions.
• UV Resistance: The membrane is treated with UV stabilizers to protect it from degradation due to prolonged exposure to sunlight during construction and installation.
• Ease of Installation: The Tunnel Waterproofing Membrane is designed for quick and easy installation, reducing construction time and costs while ensuring a reliable seal.

Product Specifications

• Material: High-quality materials such as HDPE (High-Density Polyethylene), PVC, or TPO (Thermoplastic Olefin), depending on the project requirements and expected environmental conditions.
• Thickness: Available in thicknesses typically ranging from 1.0 mm to 3.0 mm, though custom thicknesses may be available based on the needs of specific projects.
• Width: Rolls are generally available in widths from 4 meters to 6 meters, but custom widths may be produced for specific tunnel dimensions.
• Length: Standard roll lengths are typically 50 meters to 100 meters, with custom lengths available depending on the size of the project.
• Tensile Strength: Typically ranges from 15 to 35 MPa, ensuring the membrane can withstand the mechanical stresses encountered during installation and in use.
• Elongation at Break: Generally ranges from 10% to 15%, providing the flexibility necessary for the membrane to cope with the movements of the tunnel.
• Permeability: Extremely low permeability (less than 1 x 10^-13 cm/s), ensuring that water, chemicals, or contaminants do not infiltrate the tunnel.
• Color: Typically black to improve UV resistance, but custom colors may be available for specific project requirements.

Applications

• Tunnel Waterproofing: Primarily used in tunnels for railways, highways, subways, and utility tunnels to prevent water leakage and protect the integrity of the structure.
• Underground Parking Lots: Applied in underground parking structures to prevent water seepage and ensure a dry environment for vehicles and equipment.
• Basement Waterproofing: Used in basements and underground buildings to protect the foundation from water infiltration and moisture-related damage.
• Water Retention Structures: Can be used in dams, reservoirs, and other water retention systems to provide a reliable waterproof barrier and prevent leakage.
• Mining Projects: Suitable for use in underground mining tunnels to protect workers and equipment from water exposure and ensure safe working conditions.
• Wastewater Treatment Facilities: Used in wastewater treatment plants, particularly in underground tanks, to prevent leakage and safeguard the environment.

Construction Recommendations

1. Site Preparation: The installation site should be properly prepared, ensuring that the surface is smooth, free of sharp objects, and properly compacted. Any debris or sharp rocks should be removed to prevent punctures in the membrane.

2. Installation Method: Lay the Tunnel Waterproofing Membrane flat and unroll it along the tunnel structure. Ensure that the membrane is installed with minimal tension to avoid stressing the material. Adjacent sheets should be welded or overlapped to ensure a continuous waterproof seal.

3. Seam Welding: Proper seam welding is essential to ensure a watertight bond between adjacent sheets. Use extrusion or wedge welding to join the seams and perform tests to confirm the integrity of the seams (e.g., air or vacuum tests).

4. Protection During Installation: During installation, protect the membrane from punctures, tears, or damage caused by construction equipment. Use geotextile fabrics or other protective layers over the membrane if heavy equipment or backfilling is required.

5. Backfilling and Covering: After installation, backfill the membrane with soil, gravel, or other materials to protect it from UV exposure, physical damage, and environmental stress. Backfilling should be done carefully to avoid overloading or damaging the membrane.

6. Inspection and Maintenance: Regularly inspect the Tunnel Waterproofing Membrane for signs of wear, punctures, or damage. If any issues are identified, make immediate repairs using appropriate welding or patching techniques. Periodic checks will ensure that the waterproofing system remains effective over time.