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Geomembrana compósita para engenharia de túneis

Composite geomembranes are extensively used in tunnel waterproofing systems. Installed between the primary support and secondary lining, they effectively prevent water infiltration that could compromise tunnel integrity while enhancing structural stability and safety. The material’s excellent durability and tensile strength ensure reliable long-term performance in demanding tunnel environments.

Description

Tunnel engineering geomembrane is extensively used in tunnel waterproofing systems. Installed between the primary support and secondary lining, they effectively prevent water infiltration that could compromise tunnel integrity while enhancing structural stability and safety. The material's excellent durability and tensile strength ensure reliable long-term performance in demanding tunnel environments.

Parâmetro

Parâmetro Specification
Material   Composition HDPE Geomembrane +   Needle-punched Geotextile
Membrane   Thickness 0.2mm – 2.0mm
Fabric   Weight 100g – 600g/m²
Composite   Layers One textile + one membrane / Two   textiles + one membrane / Multilayer
Largura Standard 6 meters, customizable   1m–8m
Length 50m or 100m per roll,   customizable
Tensile   Strength ≥ 18 MPa (adjustable based on   fabric)
Tear   Strength ≥ 80 N
Permeability ≤ 1.0×10⁻¹³ cm/s

Main features

  • High physical and mechanical performance indicators: Including tensile resistance, tear resistance, and burst strength.
  • Excellent product characteristics: High strength, good elongation properties, and large deformation modulus.
  • Outstanding material properties: Acid and alkali resistance, corrosion resistance, aging resistance, and superior impermeability.

Function

  • Impermeability: The composite geomembrane provides excellent seepage control, forming a continuous barrier that prevents groundwater infiltration into tunnels, ensuring interior dryness and safety.
  • Reinforcement: As part of the tunnel lining, it enhances structural stability and load-bearing capacity, preventing collapse or deformation due to geological shifts.
  • Drainage: Its superior drainage capability quickly removes accumulated water, maintaining a dry and clean tunnel environment for safe operation.

Product Applications

Waterproofing systems for mountain and hydraulic tunnels

Subway and metro tunnel lining

Expressway and railway tunnel structures

Urban underground utility corridors‌

Application scenarios

Composite geomembrane for tunnel engineering

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