Shield type tunneling apparatus

Details Shield type tunneling apparatus Shield type tunneling apparatus

1987-12-29

1989-04-04

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Rotary cutter head with advance direction coincident or...

299 58, 299 67, 405143, E21D 908, E21D 912

Patent

active

048180262

ABSTRACT:
A shield type tunneling apparatus comprises: a shield body having in its front portion a cutter-head compartment for digging a tunnel through bedrock, the cutter-head compartment being rotatably driven by a driving unit; and a transporting means for discharging rock debris produced by the cutter-head compartment from a front area thereof to a rear area of the shield body. The tunneling apparatus is characterized in that: the cutter-head compartment is filled with water which buoys up the rock debris in the cutter-head compartment to enable the rock debris to easily enter the transporting means under the influence of rotational movement of the cutter-head compartment.

REFERENCES:
patent: 3334945 (1967-08-01), Bartlett
patent: 3672726 (1972-06-01), House
patent: 3830545 (1974-08-01), Sugden
patent: 4165129 (1979-08-01), Sugimoto et al.
patent: 4406498 (1983-09-01), Akesaka
patent: 4456305 (1984-06-01), Yoshikawa
patent: 4629255 (1986-12-01), Babendererde

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