Composite Geomembrane Application in Seepage Control

Composite Geomembrane is a combination of Geotextile, It is often referred to as a Composite Geomembrane system or Composite Membrane with Geotextile. This material combines the high impermeability of geomembrane with the functions of strengthening, drainage and protection of geotextile to form a multi-functional engineering material.

Specification：                                                                                                                                         

One cloth two film base cloth:100-1000g/m

film thickness:0.2-1.5mm

One cloth one film base cloth:100-1000g/m

film thickness:0.2-1.5mm

Two cloth one film base cloth:80-600g/m

film thickness:0.2-1.5mm

Width:2m-7m

Weight: 200g-1500g/㎡‘

One cloth one film:

Two cloth one film:

Technical Data:

Key Advantages                                                                                                                                               

1. Composite Functional Design
   Multilayer structure formed by thermal bonding of geomembrane and nonwoven geotextile (typical configuration: 0.3-2.0mm HDPE + 200-600g/m² fabric), achieving synergistic waterproofing and drainage. Lab tests show permeability coefficients as low as 1×10⁻¹³ cm/s.

2. Enhanced Mechanical Properties
   Demonstrates tensile strength of 20-40kN/m  with elongation exceeding 400%, capable of accommodating 3-5% subgrade differential settlement.

3. Environmental Resistance
   Certified per GB/T17643-2011, maintains performance stability in pH 3-11 environments, -50℃~+60℃ temperature ranges, and after 3000 hours UV exposure.

Hydraulic Engineering                                                                                                                                     

• Applications: Dams, irrigation canals, artificial lakes

• Typical Configuration: Sandwich structure (1.0-2.0mm HDPE + 400-800g/m² PET geotextile)

• Technical Benefits:

• Seepage control: ≤5L/(m²·d) 

• Hydraulic fracture resistance: Withstands pressure ≥0.6MPa (

• Case Study: Used in South-North Water Transfer Project, reducing leakage by 30% and cutting construction time by 50%.

2. Environmental Engineering

• Applications: Landfills, contaminated site remediation, wastewater ponds

• Typical Configuration: Dual-liner system (2.0mm HDPE + GCL)

• Technical Benefits:

• Impermeability: k≤1×10⁻¹² cm/s 

• Chemical resistance: Compatible with pH 2-12 and organic solvents

• Case Study: A hazardous waste landfill achieved zero leakage over 15 years using "geomembrane+GCL+leachate collection".

3. Transportation Infrastructure

• Applications: High-speed rail subgrades, highway slopes, tunnel drainage

• Typical Configuration: Needle-punched composite (0.8mm HDPE + 300g/m² nonwoven)

• Technical Benefits:

• Freeze-thaw durability: 90% CBR retention after 50 cycles (-30℃~+25℃)

• Capillary barrier: Reduces water rise >1.5m 

• Case Study: Applied in Harbin-Dalian High-speed Rail, decreasing frost heave by 60%.

4. Energy Projects

• Applications: Oil tank foundations, LNG terminals, solar farms

• Typical Configuration: UV-resistant composite (1.5mm HDPE + carbon black layer)

• Technical Benefits:

• High-temperature stability: >85% tensile strength retention at 80℃ 

• Hydrocarbon resistance: Impervious to diesel and lubricants

• Case Study: Northwest China solar farm reduced dust-induced efficiency loss by 25%.

5. Municipal Engineering

• Applications: Utility tunnels, constructed wetlands, urban water features

• Typical Configuration: Self-healing composite (1.2mm HDPE + nanoclay layer)

• Technical Benefits:

• Damage recovery: Seals ≤3mm punctures 

• Ecological integration: Allows root penetration (porosity ≥35%)

• Case Study: Xiongan New Area utility tunnel project cut maintenance costs by 40%.

Packaging:                                                                                                                                    

Customer's company Logo mark can be added.

Packed in woven bags.