Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Cast in situ
Patent
1977-11-23
1979-04-10
Taylor, Dennis L.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Cast in situ
405150, 425 59, F16L 104
Patent
active
041481933
ABSTRACT:
Method and apparatus are described for producing underground installations of concrete pipe, in which a shaft is sunk into the ground at each of two spaced locations between which the concrete pipe is to be installed, an annular slipform-shield is disposed in one shaft, holes are bored through the ground from the other shaft to the slipform-shield, and cables are passed through the holes and are attached to the slipform-shield. The cables are then used for pulling the slipform-shield towards the other shaft while concrete is simultaneously fed to the trailing section of the slipform-shield to thereby fill the resulting void by a cast tubular layer of concrete embedded in and supported by the ground. After the cast concrete has set as a hardened tubular layer, the soil from within it may be removed.
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patent: 3205550 (1965-09-01), Martin
patent: 3234743 (1966-02-01), Levy
patent: 3325217 (1967-06-01), Enz
patent: 3486572 (1969-12-01), Hamilton et al.
patent: 3656563 (1972-04-01), Blinne
patent: 3894402 (1975-07-01), Cherrington
patent: 4043136 (1977-08-01), Cherrington
Barish Benjamin J.
Taylor Dennis L.
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