INFRASTRUCTURE - Tunnel
Tunnel is an artificial underground passage, especially one built through a hill or under a building, road, or river.
The tunnel is either waterproof (sealed) or drained according to the entry of groundwater. Two important functions of geosynthetics in tunnel engineering are drainage and waterproofing. Geomembrane and geotextile are widely used in tunnel construction.
Geomembranes
As time goes by, voids and cracks will appear in conventional linings, and the geomembrane can minimize the deterioration of the linings. With high elongation strength, they can bridge old and new cracks. Therefore, LLDPE geomembrane liners are the most cost-effective and effective waterproof solution in the tunnel construction.
Geotextiles
Needle punched nonwoven geotextile can highly protect the geomembrane from damage during installation and service with its excellent tensile strength/elongation, static puncture, puncture resistance and a long-term resistance to alkaline media. In addition to technical advantages, another benefit is to reduce costs. These include not only cost reductions during construction, but also long-term reduced maintenance costs.
