An overview of HS2 tunnelling activities at Long Itchington Wood Bio Over the past 20 years Guillaume has gained practical experience within the tunnelling industry across Europe and South Africa. Managing a number of excavation and construction projects with VINCI Construction Grands Projets and Bouygues Travaux Publics, all with difficult geological aspect. Guillaume’s recent experiences… Read more »

Antonia Cornaro, Amberg Engineering Expert Underground Space, and Co-Chair of ITACUS, the International Tunnelling and Underground Space Association’s Committee on Underground Space Alternative and innovative uses of underground space International perspective on alternative uses of underground space – the latest applications and uses such as data storage and food production will be highlighted. Their role… Read more »

Progress and insights into the construction of London Power Tunnels 2 (LPT2) Tunnels & Shafts Since December 2019, HOCHTIEF-MURPHY Joint Venture and National Grid have been working hard to deliver the underground works of LPT2, National Grid’s seven-year, £1bn project that is rewiring South London. Since then the team has completed the detailed design as… Read more »

Low Carbon Sprayed Concrete – maximising the potential for carbon reduction. An HS2 Innovation Team funded spraying trial has taken place demonstrating the potential of powdered calcium aluminate based accelerators to facilitate the substitution of 70% of the typical CEM I (Portland Cement) content with slag (GGBS), while meeting typical industry standard sprayed concrete lining… Read more »

Low Carbon Sprayed Concrete – maximising the potential for carbon reduction. An HS2 Innovation Team funded spraying trial has taken place demonstrating the potential of powdered calcium aluminate based accelerators to facilitate the substitution of 70% of the typical CEM I (Portland Cement) content with slag (GGBS), while meeting typical industry standard sprayed concrete lining… Read more »

Slurry Treatment Plants (STPs) in tunnelling – safety, performance and cost factors for tunnelling jobsites In mechanized tunnelling operations performance, consumption and safety are primary factors for jobsites. One of the most important components effecting these factors, especially in slurry TBM operations, are Slurry Treatment Plants (STPs). Inadequate/sub-optimally dimensioned and designed STPs create bottlenecks for… Read more »

Multi-layer lining design: a new framework for tunnel lining design As the single layer sprayed concrete lined (SCL) primary lining design gradually becomes the “norm”, design of multi-layer lining (MLL) that comprises a permanent primary lining layer and the following lining layers becomes a real challenge. Dr. Jiang Su discusses this emerging topic from engineering… Read more »

Diagnostic tunnel infrastructure measurements using muon tomography Geoptic’s application of novel instrumentation to infrastructure imaging is transforming remedial investigations in tunnels on the UK rail network. Using a method similar to that of an x-ray, Geoptic exploits naturally-occurring radiation for structural investigations. Importantly, the method is non-invasive, non-destructive and does not require physical contact with… Read more »

Dr Mehdi Serati is an Advance Queensland Fellow, a Lecturer at the University of Queensland (School of Civil engineering, Australia), and Deputy Manager of the international Large Open Pit Project (LOP) Synthetic glass aggregates in shotcrete production The increasing price and diminishing reserves of natural sand and aggregates have signified a genuine need to develop… Read more »

The Shatin to Central Link (SCL) – Contract 1128 South Ventilation Building to Admiralty Tunnels multiple slurry solution The MTR Shatin to Central Link (SCL) – Contract 1128 South Ventilation Building to Admiralty Tunnels comprises the permanent works and the associated temporary works necessary for the TBM driven tunnels between South Ventilation Building (SOV) and Admiralty station, and short  sections… Read more »