The collector said the officials are expecting the conveyor belt to function today and for further excavation some space has to be created at the Tunnel Boring Machine. According to him ...

The world's largest earth pressure balance (EPB) double shield hybrid tunnel boring machine, or TBM, is officially rolled off the production line for the first time in Changsha, Hunan province ...

KOLKATA: A giant tunnel boring machine (TBM), 90m long and weighing ... TBMs are earth pressure balance (EPB) machines used to excavate tunnels through hard rock, wet or dry soil, or sand.