| 摘要 |
A method for laying pipe lines in the deep sea without a laying barge is provided to install the pipe lines quickly and simultaneously in the deep sea without the laying barge, a large crane ship, a special equipment-large ship, and a pipe carrier. A method for laying pipe lines in the deep sea without a laying barge comprises a step of fitting rings to the surface of pipes at regular intervals and connecting, welding pipes of 500~1,500M, and sealing up the pipes by installing pipe-closing and coffering sealing devices(7) in the right and left sides; a step of launching and floating pole pipes(4) on the sea, removing compressed air by opening a pipe-sealing device valve(9) of the deep sea side at a laying position, removing the sealing device, and injecting sea water into the pipes; a step of putting the ends(20) of the pipes of the land side on a welding barge(13), removing the sealing device, connecting a vacuum pump to the ends of the pipes, removing the air in the pipes, sucking sea water, and settling the pole pipes of 500~1,500M to the bottom(19) of the sea quickly and simultaneously; and a step of putting the ends of new pipes of 500~1,500M on the welding barge, welding the new pipes to the pipes installed, displacing the pipes to the sea by lifting the pipes with a crane(17), and making the welding barge come out of the laying position. Sea water is sucked into a new pipe by a vacuum pump(15) in a next section and the laying of a new pipe line is repeated.
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