Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Subaqueous
Patent
1993-01-15
1994-06-21
Taylor, Dennis L.
Hydraulic and earth engineering
Underground passageway, e.g., tunnel
Subaqueous
405134, E21D 900
Patent
active
053223900
ABSTRACT:
An underwater tunnel consisting of: a foundation body moored to the bottom of the water; a support frame erected on the foundation body; and a tunnel body formed integral with the support frame; wherein the tunnel body is formed in a two-layer construction which consists of an outer shell and an inner shell so that spaces formed inside the inner shell and between the outer and inner shells can be used for desired purposes, and the support frame is so formed that its vertical cross section is virtually a regular triangle and that a water tank is formed at the inside bottom of the support frame. An underwater mooring apparatus, which holds the underwater tunnel in place in the water, consists of a tension cable device whose one end is secured to an anchor and the other end is attached with a rotatable pulley, and a plurality of connecting wire devices wound around the pulley attached to the tension cable device, both ends of the connecting wire means being fixed to the structure to be moored; wherein one of the connecting wire devices is normally under tension connecting the structure to be moored and the tension cable device and the remaining connecting wire device are normally set in a loosened state so that when the first tensed connecting wire means is broken, the remaining loosened connecting wire device can take over to hold the structure in place.
REFERENCES:
patent: 3478521 (1969-11-01), Petrik
patent: 3738112 (1973-06-01), Grant et al.
patent: 4657435 (1987-04-01), Chang
patent: 5049004 (1991-09-01), Niimura
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