Question

Explain tunneling by TBM and its types.

Answer 1

tunnel boring machine (TBM), also known as a "mole", is a machine used to excavate tunnels with a circular cross section through a variety of soil and rock strata. They may also be used for microtunneling. They can bore through anything from hard rock to sand.

Answer 2

TBM are used to excavate tunnels with a circular cross section through a variety of subterranean matter; hard rock, sand or almost anything in between. As the TBM move forward, the round cutter heads cut into the tunnel face and splits off large chunks of rock

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