Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Subaqueous
Patent
1981-03-02
1984-04-24
Taylor, Dennis L.
Hydraulic and earth engineering
Underground passageway, e.g., tunnel
Subaqueous
405132, 405147, 405158, E01G 404
Patent
active
044445261
ABSTRACT:
A method of, and apparatus for, constructing a submerged tunnel in situ and a submerged tunnel formed thereby has an inverted arch formation to resist upward buoyancy thrust and a sealed chamber unit mounted on the tunnel and longitudinally displaceable along it for servicing the exterior of the tunnel. The tunnel is constructed in situ by progressively lengthening towards each other two tunnel sections 3, 3' which extend in cantilevered manner from opposed base foundations 1 and 2. Each tunnel section has mounted on the free end thereof of an outer chamber unit 13, 13' and an inner chamber unit 6, 6' within the latter of which the free end of the tunnel section is progressively formed and extended. As the tunnel sections are lengthened their associated chamber units are displaced longitudinally and sequentially to provide clearance for further lengthening, such displacement may be effected by hydraulic rams or mechanical rack and pinion devices. When the tunnel sections 3, 3' are sufficiently lengthened the outer chamber units 13, 13' dock and are sealed together at 28, 28' and a passage opened between those chamber units 13, 13'. The inner chamber units 6, 6' are removed from within the combined outer chamber units and a passage is opened between these latter units through which the tunnel sections are extended and connected together to form the continuous tubular tunnel. The submerged depth of the tunnel sections may be controlled during construction by winches and anchorages devices 25, 26 and 27.
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Blee Anthony D.
Foundoukos Dimitris
Blee Anthony David
Foundoukos Dimitris
Taylor Dennis L.
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