TBM cutterhead

2nd TBM cutterhead lowering at Launching Shaft New Delhi Station for tunnel-496.
Later it will be mounted to cutterhead support this giant which will crush anything from soil to rock weight about 65 tonnes and excavation diameter will be 6.55-meter, manufactured by Herrenknecht.
The finished diameter of the tunnel after precast segment lining will be 5.8m.

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