Water control ― tried and tested nroducts

摘要

Differences occur in ground conditions around the world, and every tunnelling project throws up its own unique challenges. But even with this in mind, there is an apparent regional diversity in the approach to waterproofing. In Norway, where sub-sea road tunnels present extreme conditions, waterproofing has become more a case of water control than prevention. Water ingress systems merely shed water away from the roadway, with the use of simple, free-standing, lining systems to prevent ice build-up (see p43). Granted, these lining techniques are assisted by the Norwegian geology and the use of advanced grouting systems in difficult zones. However, this open-minded approach contributes towards some of the most cost-effective tunnelling projects in the world.