Boltless Trapezoidal Tunnel Lining

Boltless Trapezoidal Tunnel Lining

Boltless Trapezoidal Tunnel Lining The use of a boltless trapezoidal lining on the £416m (US$567m) west section of London’s Thames Tideway Tunnel is the world’s first-ever application of the technology. Its innovative nature was recognised at the Ground Engineering...
Geo RT

Geo RT

GeoRT Geobear® (2017) Preventing damage to the existing built environment whilst tunnelling beneath has long been an expensive and time-consuming activity. CECL worked together with Geobear to develop a real-time displacement control system using the incredible power...
SlipStress™ Lining System

SlipStress™ Lining System

SlipStress™ Lining System Lee Tunnel (2010 – 2012) The Lee Tunnel project consists of a 7.2m diameter, 6.9km long tunnel, and five of the largest and deepest hydraulic shaft structures ever built in the UK. By taking a holistic approach to design and...
UltraShell™ Lining System

UltraShell™ Lining System

UltraShell™ Lining System Thames Water Ring Main (TWRM) Extension Brixton to Honor Oak and Coppermills (2008 – 2011) UltraShell™ is a High-Performance Fibre Reinforced Cement Composite (HPFRCC) developed as a permanent lining in the underground environment that can be...