Discover the incredible engineering behind Switzerland’s biggest tunnel boring machine, one of the most advanced in the world. In this video, we explore how this massive machine operates to ...

The tunnel boring machine, named Kalvarayan, completed its 867-metre journey between Ayanavaram and Perambur stations, surfacing at the Perambur south shaft. CHENNAI: CMRL achieved a milestone in ...

Approximately ten miles away, as the seagull flies, the 308-ft-long earth pressure balance machine Chessie mined more than 6,300 ft for the Chesapeake Bay Bridge-Tunnel’s new parallel tube at ...

The metro rail phase 2 project on Tuesday achieved its 11th tunnel breakthrough as tunnel boring machine Kalvarayan (S 1331) emerged at Perambur south shaft after completing an 867m up-line drive ...

HDR and Mott MacDonald are the project’s lead designers. Mary, the tunnel boring machine, arrived on the project’s existing artificial north island and was relaunched back to the south island.

The tunnel boring machine (TBM) ‘Kalvarayan’ bored a tunnel running to a length of 867 metres and made a breakthrough at Perambur on Tuesday. With this, Chennai Metro Rail has finished 11 ...

which will serve as a path for a tunnel boring machine. That phase is expected to wrap up in 2027, followed by work on the New Jersey side of the tunnel. Once completed in 2035, the new tunnel is ...

[Photo provided to chinadaily.com.cn] The construction of the Tianjin-Weifang High-Speed Railway reached a historic milestone on Monday, as the super-large diameter tunnel boring machine Jincheng ...

Grading and excavation also could disturb or destroy archaeological sites. The tunnel-boring machine could cause vibrations that could shift the area's geology. Soil in the construction area could ...

Instead of constructing detention tanks, the project used a tunnel boring machine to install a 900m tunnel with a 1.829m internal diameter, reducing surface disruption and preserving the environment.