Apparatus for making small-bore tunnels

Details Apparatus for making small-bore tunnels Apparatus for making small-bore tunnels

1985-06-28

1987-08-25

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

With mine roof-supporting means

299 73, E21D 910

Patent

active

046888543

ABSTRACT:
The invention relates to an apparatus for making small-bore underground tunnels. It contains a working tube which can be advanced in the direction of the developing tunnel, and an excavating unit mounted in the working tube and having an excavating tool. The excavating unit is displaceable in the working tube. The excavating tool has a substantially smaller effective outside cross section than corresponds to the internal cross section of the working tube, and is mounted on the excavating unit so as to be displaceable in directions perpendicular to the working tube axis. Drive means serve for moving the excavating tube within a range of action whose maximum cross section, measured perpendicular to the working tube axis, corresponds at least to the outside cross section of the working tube.

REFERENCES:
patent: 4232905 (1980-11-01), Dick
TIS (Tiefbau, Ingenieurbar, Strassenbau) Aug. 1981, pp. 550-555; G. Hurtz and W. Weber.
TIS (Tiefbau, Ingenieurbau, Strassenbau) Feb. 1983, pp. 58-61; W. Weber and H. P. Uffmann.
TIS (Tiefbau, Ingenieurbau, Strassenbau) Mar. 1983, pp. 109-112 and 121; W. Weber and H. P. Uffmann.

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