Shield tunneling machine and method

Details Shield tunneling machine and method Shield tunneling machine and method

1977-11-17

1979-08-21

Pate, III, William

Mining or in situ disintegration of hard material

Processes

Stabilizing underground structure

299 31, 299 56, 405141, E21D 908

Patent

active

041651294

ABSTRACT:
Shield tunneling machine and method which may minimize the variation in water- and earth-pressure at the tunneling face so as to hold the ground firm and to ensure the safe tunneling.

REFERENCES:
patent: 1530768 (1925-03-01), Haag
patent: 3260054 (1966-07-01), Lorenz
patent: 3334945 (1967-08-01), Bartlett
patent: 3561223 (1971-02-01), Tabor
patent: 4040666 (1977-08-01), Uchida
patent: 4068486 (1978-01-01), Uchida
patent: 4116487 (1978-09-01), Yamazaki et al.

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