What is the primary function of geomembranes in drainage systems?

Geomembranes serve primarily as barriers against water infiltration in drainage systems. Their primary function is to prevent the movement of water through the soil or other materials, thereby controlling the flow of water within a drainage system. By acting as a barrier, geomembranes help to protect underlying structures and ensure that water is directed in a controlled manner, reducing the risk of unwanted erosion and contamination of groundwater.

While they do play a role in the overall drainage process, their main purpose is to maintain separation between different materials and prevent water from passing through undesired pathways. This capability is crucial in various applications such as landfills, wastewater treatment systems, and stormwater management, where controlling water infiltration is essential for system integrity and environmental protection.