China's domestically developed, world's largest-diameter vertical shaft boring machine 'Qiming' was officially put into operation in Taicang City of east China's Jiangsu Province on Tuesday, for the Chongming-Taicang Yangtze River Tunnel project. #Trending #ChinaInnovates | CCTV

184K views · 1.8K reactions | Our first tunnel boring machine (TBM) is taking shape with final stages of assembly. The crown jewel and heaviest piece of the TBM – the 100-tonne red cutterhead – was lowered into the excavated station box and installed this week. | Metro Tunnel | Facebook

A massive Tunnel Boring Machine moves steadily through solid rock, cutting and grinding its way underground. The rotating cutter head breaks the rock face, while the machine simultaneously supports the tunnel walls and removes excavated material. A clear example of the scale, precision, and controlled power behind modern underground tunneling — where planning, machinery, and engineering work together below the surface. ⚠️ Disclaimer: This video clip is used under Section 107 of the Copyright Act

The Tunnel Boring Machine (TBM) features crucial mechanical elements such as main bearings that support the rotating cutterhead, allowing it to excavate efficiently. Erector bearings play a pivotal role in the tunnel lining process, supporting the erector arms responsible for placing concrete segments to form the tunnel walls. Hydraulic pumps power essential functions like the movement of the cutterhead and the operation of erector arms, providing the necessary force for excavation and tunnel li