Brunel's tunnelling shield

Bildnummer 11903989
Brunel's tunnelling shield
Brunel's tunnelling shield. This three-tiered frame was proposed by Sir Marc Isambard Brunel (1769-1849) in 1823 for use in the construction of a tunnel beneath the river Thames,London,England. Two plans of the tunnel are seen at top and upper centre. This shield consists of 11 frames,each split into 3 compartments,that could be edged forward independently. The frames support the tunnel sides while allowing excavators and bricklayers to work from within them. When tunnel construction began in 1825 a 12-frame version of the shield was used. The Thames tunnel,which ran between Rotherhithe and Wapping,was completed in 1873. Engraving taken from Mechanics Magazine (27th September 1823)
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / Terry, Sheila
Bildgröße: 3308 px × 3369 px
Modell-Rechte: nicht erforderlich
Eigentums-Rechte: nicht erforderlich
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