Introduction to smooth and textured geomembranes

Smooth geomembrane (smooth surface)

Advantages:
Superior seepage prevention performance
Dense, textureless surface provides the most stable seepage prevention and resistance.
Easier and stronger welding
Smooth surfaces make hot wedge welding and extrusion welding easier, resulting in higher weld strength.
Lower cost
Simpler production process, cheaper than rough-surface surfaces.
Moderate friction and puncture resistance
Smooth surface with low friction against soil/gravel, allowing for easy slippage.

Applicable Scenarios

Planar seepage prevention: Suitable for landfill bottoms, regulating ponds, sewage ponds, fishponds, lotus ponds, and artificial lake bottoms. Suitable for projects with gentle slopes (generally <3%). seepage prevention projects requiring high welding quality. areas that do not require high friction but only strong seepage prevention.

Textured geomembrane (rough surface / columnar textured surface)

Functions:
Increases friction and prevents slippage.
The surface has raised points/textures, resulting in a high coefficient of friction with soil and gravel, making it less prone to sliding on steep slopes.

Suitable for high slope seepage prevention. Commonly used in landfill slopes, tailings dam slopes, and reservoir slopes.

Provides certain resistance to puncture and compression. The raised structure disperses pressure, preventing the protective membrane from being punctured.

Seepage prevention is slightly weaker than a smooth surface (but still meets specifications). The surface structure slightly affects density, but it is perfectly adequate for engineering applications.

Applicable Scenarios

Steep slope seepage prevention: Slope > 3%, especially 1:1.5 and 1:2 slopes. Landfill slope seepage prevention (most typical application). Tailings dam, slag heap, and hydraulic dam slopes. Projects requiring a tight seal between the membrane and soil to prevent slippage.