Geomembranes are critical components in mining projects, hydraulic works, landfills, and environmental containment systems. Their primary function, acting as an impermeable barrier, depends not only on material quality but also on rigorously controlled installation. However, recurring field errors can seriously compromise their performance.
One of the most well-known and dangerous is the so-called “trampolining” effect, but it is not the only one. Based on the standards of the International Geosynthetics Society (IGS) and industry best practices, this article reviews the main geomembrane installation errors, their consequences, and how to prevent them from a preventive engineering perspective.
The “trampolining” effect occurs when the geomembrane is installed with excessive tension, especially at corners, slope transitions, or anchor areas. This often happens when installers aim for a visually “perfectly smooth” appearance, stretching the material beyond recommended limits.
According to the IGS, geomembranes must be installed in a relaxed condition, allowing the material to adapt to:
When a geomembrane is tensioned, any thermal change or additional load increases internal stresses.
Installing a geomembrane over a subgrade with angular stones, roots, or irregularities is one of the leading causes of failure.
Technical impact:
Punctures that may not be detected during installation but become leaks once the structure is in operation.
IGS standards establish clear criteria for anchor trench design. Insufficient depth or poor backfill compaction reduces material confinement.
Technical impact:
Geomembrane slippage, especially on slopes and embankments, compromises system stability.
Weld quality is as important as material quality.
Common mistakes include:
Technical impact:
Joint failures, leaks of leachate or tailings, and potential environmental penalties.
Allowing equipment traffic or dragging tools over the geomembrane causes mechanical damage, even before cover placement.
Technical impact:
Cuts and abrasions that reduce the service life of the impermeable system.
Factors such as wind, rain, or abrupt temperature changes directly influence geomembrane behavior during placement.
Technical impact:
Uncontrolled displacement, tension buildup, and difficulties achieving reliable welds.
To prevent these failures, IGS standards and industry experience recommend:
The “trampolining” effect and other geomembrane installation failures are not inevitable problems. In most cases, they result from incorrect field decisions or lack of technical supervision. Integrating installation criteria from the design stage allows these risks to be anticipated and significantly reduced.
At LDM, we specialize in geosynthetic solutions. We promote preventive engineering by integrating proper material selection, regulatory compliance, and best installation practices from the beginning of each project.
Contact us and schedule a meeting with our specialists to prevent failures such as the trampolining effect, leaks, and cost overruns before they reach the jobsite.
Frequently Asked Questions (FAQs)
No. It can occur in any geomembrane installation: channels, landfills, lagoons, and hydraulic works.
Yes, as long as it is installed without excessive tension and following manufacturer and IGS recommendations.
Definitely. Most failures documented by the industry are associated with the absence of field quality control.