Geosynthetic materials have become an integral part of the geotechnical engineering and construction industry. Geomembranes have gained significant importance among various geosynthetic materials due to their low permeability and excellent barrier properties. Geomembranes are synthetic membrane liners used to control the fluid migration in any geotechnical engineering-related material. In this article from Farnam baspar blog, we will discuss the advantages of using geomembranes as a part of the construction process.
Advantages of using geomembranes in construction:
Geomembranes are widely used in construction projects as a part of the construction process. Here are some advantages of using geomembranes in construction: Prevent water infiltration: One of the primary advantages of using geomembranes in construction is that it prevents water infiltration into the soil. The geomembrane acts as a barrier to water flow and controls its migration in the structure. This results in a stable and strong structure that is resistant to water damage.
Reduce soil erosion:
Soil erosion is a significant problem in construction projects, particularly in areas with high rainfall. Geomembranes can help to reduce soil erosion by providing a stable and secure foundation for the structure. This prevents soil displacement and minimizes the risk of landslides and other natural disasters.
Improve chemical resistance one of the advantages of using geomembranes:
Geomembranes are highly resistant to chemical corrosion and can withstand exposure to various chemicals and substances. This makes them ideal for use in industrial projects, such as landfill sites, where they can prevent the release of toxic materials into the environment.
Enhance durability:
Geomembranes are highly durable and long-lasting. They provide excellent protection against environmental factors such as UV radiation, extreme temperatures, and physical damage. This makes them ideal for use in construction projects, where durability is essential for the longevity of the structure.
Reduce construction costs:
Using a geomembrane as a part of the construction process can significantly reduce construction costs. By preventing water infiltration and soil erosion, geomembranes can reduce the need for costly repairs and maintenance. They can also help to minimize the risk of construction delays and disruptions, which can result in additional costs.
Tailings facilities can benefit significantly from incorporating geomembranes into their designs, offering a range of advantages that can help ensure the safety and effectiveness of the storage structure. Here are the top four advantages of using geomembranes in tailings facilities:
1 – Slope stabilization and erosion protection
Maintaining geotechnical safety in tailings storage structures is essential, with a focus on understanding the mechanical and elasticity parameters to establish potential displacement. When waste buildup occurs, slope failures can occur, but structured geomembranes can help prevent this. In addition, geomembranes have been researched and evaluated extensively as stabilizing mechanisms on steep slopes. Laboratory and field tests have demonstrated that geomembranes can significantly reduce runoff and dissipate the impact of raindrops, thereby minimizing erosion and increasing shear strength.
2 – Effective draining system in tailings facilities
Adequate drainage is crucial for all geotechnical constructions, especially tailings storage facilities. Geomembranes can help minimize the risk of fluid buildup and liquefaction of saturated materials by supporting effective drainage systems. A typical tailings storage facility drainage system involves a collection ditch, pumps, and a collection and treatment system. The ideal system reduces the amount of stored water to zero, as most issues related to tailings storage facilities often stem from liquefaction. Structured geomembranes with studs and a filtering geotextile can effectively drain water out of the tailings to reduce moisture buildup.
3 – Long-lasting and durable one of the Advantages of using geomembranes
The service life of a tailings storage facility can change as technology develops, and once useless tailings find a new purpose. Therefore, tailings storage facilities are designed to last for decades, presenting a unique engineering challenge as weather and seismic records in certain regions are limited in scope. However, one area where engineers can confidently predict longevity is the geomembrane liner. High-density polyethylene (HDPE) geomembrane liners have more than 100 years of service life when protected and correctly installed. Engineers can build with high safety factors by utilizing robust components, such as an HDPE geomembrane liner, within the tailings storage facility.
4 – Leakage protection and containment, advantages of using geomembranes
Contaminants dangerous to human health are a concern in mining, manufacturing, and agriculture. Advances in mining construction methods and geomembranes have offered the ability to create better barriers between a tailings storage facility and the environment. Modern geomembranes can resist degradation from UV exposure, chemical reactions, oxidation, and extreme temperatures. Selecting a geomembrane from an authorized and trustworthy manufacturer or supplier is essential to ensure the highest quality geomembrane and technology are used. Geomembranes must be flexible and robust to withstand stress cracking for years under the load by tailings and fluid.
In conclusion, the advantages of using geomembranes in tailings facilities offer a range of benefits that can help ensure the safety and effectiveness of the storage structure. These include slope stabilization and erosion protection, an effective draining system, long-lasting durability, and leakage protection and containment. By selecting the right geomembrane and installing it correctly, engineers can build a robust and effective tailings storage facility that meets the demands of modern mining practices.