PUNE (Metro Rail News): In November, the Maharashtra Metro Rail Corporation Limited (Maha-Metro), will begin digging tunnels, for the Range Hill to Swargate metro corridor which has a 5km underground stretch.
According to Maha-Metro officials, a successful trial of the tunnel-boring machines has already been conducted and the final work of digging the tunnel will begin in November.
Maha-Metro is committed to undertaking the underground work as per schedule and inspection and passing of the tunnel-boring machine is a milestone in our preparedness and execution of underground tunneling work, Brijesh Dixit, managing director of Maha-Metro, said.
The Maha-Metro has employed a tunnel-boring machine to dig the twin tunnel in the underground stretch. A tunnel-boring machine is a computer-controlled machine that bores the tunnel and also places the precast concrete ring segments to clad the tunnel from the inside.
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According to officials, these machines dig the tunnels which are then used for laying tracks and installing signal systems and electrical overhead conductors. A total of 6,054 rings are required for the 5-km stretch, according to officials.
Maha-Metro officials said, currently, 200 rings are made in the Maha-Metro Deccan college casting yard. The diameter of each ring is 6.4 meter. The tunnel-boring machines will be dispatched by September-end and will reach Pune via Mumbai Port by the end of October.
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