Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Boring
Patent
1988-03-30
1989-07-04
Corbin, David H.
Hydraulic and earth engineering
Underground passageway, e.g., tunnel
Boring
405138, 299 33, 299 56, E21D 906
Patent
active
048446564
ABSTRACT:
The earth pressure shield contains a front working compartment having a digging tool and formed by a separating wall. An annular space is formed in the front working compartment with a top region connected with a regulated pressurized air feed and with a bottom region open to the digging tool so that dug or mined earth material is removable with the help of a conveyor unit. At least one fluid pipe is guided from a fluid chamber with a level controller and a fluid feeder to a fluid outlet open to the digging or mining tool in the working compartment. An especially reliable operation is attained when a bulkhead space is provided by partitioning behind the working compartment and/or the circular space formed with an immersed wall. This bulkhead space is connected in its upper region with the top region of the annular space by an opening in the separating wall and includes the fluid chamber in its lower region.
REFERENCES:
patent: 249557 (1881-11-01), Truesdell
patent: 1530113 (1925-03-01), Gibson
patent: 3266257 (1966-10-01), Larrouze
patent: 4040666 (1977-10-01), Uchida et al.
patent: 4068485 (1978-01-01), Stuckman et al.
patent: 4165129 (1979-08-01), Sugimoto et al.
patent: 4436448 (1984-03-01), Magnus et al.
patent: 4569208 (1986-02-01), Villa
patent: 4607889 (1986-08-01), Hagimoto et al.
patent: 4629255 (1986-12-01), Babendererde
patent: 4729693 (1988-03-01), Hentschel
"beton-und Stahlbetonbau", 6/1986, pp. A17-A18.
"Tunnels & Tunnelling", Jan. 1986, pp. 28 and 29.
"100 Jahre Firma Wayss & Freytag Hydroschild", received in German Patent and Trademark Office, Jun. 18, 1975, pp. 250-256.
"Schweizer Ingenieur and Architekt" 42/1980, pp. 1028-1031.
"Tunnels & Tunnelling" Feb. 1983, p. 65.
Babendererde Siegmund
Braach Otto
Corbin David H.
Dubno Herbert
Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann
Olsen Arlen L.
LandOfFree
Earth pressure shield does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Earth pressure shield, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Earth pressure shield will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-849599