The main goal of geotextiles used in conventional tunnel construction (e.g. acc. NATM) is the protection of the sealing membrane. Furthermore, the drainage function and the long-term resistance to alkaline media have to be considered. TenCate products fulfil all high technical requirements of modern tunnel construction.
Cut-and-cover tunnels require special multi-layer lining systems which have to fulfil various requirements. A permanent protection of the sealing membrane is provided by high-quality nonwoven geotextiles. Very often, drainage geocomposites are used which can be easily installed, providing an effective drainage of seepage water even under high surcharge loads.