In Delhi’s belly, nine tunnel boring machines dig deep to connect metro corridors | Delhi News
New Delhi: Deep below the city’s crowded roads, historic neighbourhoods and bustling commercial hubs, nine tunnel boring machines (TBMs) are at work across Delhi.These TBMs are machines used to excavate tunnels with a circular cross-section. The macines can bore into a variety of soil and rock strata. They can be designed to bore through anything…
