3239 x 3243 px | 27,4 x 27,5 cm | 10,8 x 10,8 inches | 300dpi
Aufnahmedatum:
16. Januar 1996
Ort:
London, UK.
Weitere Informationen:
Dieses Bild kann kleinere Mängel aufweisen, da es sich um ein historisches Bild oder ein Reportagebild handel
Sprayed concrete (called shotcrete) is used in construction projects around the world. Quick-setting concrete is sprayed onto the bare rock surface immediately after excavation and rapidly hardens to form a preliminary support for the structure as well as protecting the tunnelling crew from rock falls until the final lining of conventional poured concrete can be installed. The shotcrete is delivered through high-pressure hoses and quickly dries to stabilise the workface. It is vital for the operatives to wear correct protective equipment during this operation because the additives in the shotcrete are highly toxic if breathed in or swallowed or if they come into contact with skin or eyes. The Jubilee Line covers 36.2km (22.5 miles) and serves 27 stations between Stanmore and Stratford. The equivalent statistic for the new extended section is 16km (10 miles) of which 12.4 km (7.7 miles) is in tunnel and 3.5 km (2.3 miles) on the surface. Work started on the £3.5 billion project to extend the Jubilee line in December 1993. The extension runs from Green Park to Stratford and was opened in three phases during 1999.
