Method for salvaging wreck integrally by steel caisson

Abstract

The invention relates to a method which adopts steel caissons to salvage a whole sunken ship. A GAPS and / or a super-short baseline are / is adopted to measure the coordinate; a steel caisson shaft with sandwiched shaft wall is manufactured according to the whole size of the sunken ship; after the steel caisson shaft is lifted and covers the sunken ship by adopting a hoist, sand filled in the sandwiched shaft wall of the steel caisson shaft is dropped to sullage at the outer margin of the sunken ship by using a static pressure sinking method; a bottom joist and a sullage-retaining plate are installed in bottom joist installation holes of the steel caisson shaft to form the steel caisson with the sealed bottom; then a sand-leaking hole cap is opened to discharge the sand inside the sandwiched shaft wall from a sand-leaking hole and saddle weights are dismounted to reduce the self-weight of the steel caisson; after being hoisted, the sunken ship is positioned on a semi-submersible barge to discharge the water. The method of the invention for salvaging the whole sunken ship is the static pressure sinking method with the steel caisson not swaying to the left and the right when being sunk; thus manual damages to the sunken ship can be reduced and the salvage time on the sea surface can be shortened; the risk and threat of the marine climate to the salvage workers can be avoided, and meanwhile, protection to the sunken ship and articles on the ship can be guaranteed to the greatest extent.

Description

Technical field [0001] A method of using a steel caisson to salvage a sunken ship as a whole relates to the reform of the method for salvaging objects under water. technical background [0002] For the salvage of underwater objects, especially for salvage of underwater objects with sunken ships, the general salvage methods at home and abroad are to first salvage the objects or ancient cultural relics in the sunken ship, then cut the sunken ship in sections at the bottom of the water, and then gradually salvage the sunken ship. Part of it is salvaged by splicing the sunken ship on shore. The advantage of this salvage is that it is less difficult to salvage; but the disadvantage is that the man-made damage to the sunken ship is serious, causing a large loss of historical information in the sunken ship, which is not conducive to the further archaeology of archaeologists; at the same time, the salvage operation on the sea and the seabed has a long period , The impact of the ocean cli...

AI Technical Summary

Problems solved by technology

The advantage of this kind of salvage is that it is less difficult to salvage; but the disadvantage is that the man-made damage to the sunken ship is serious, causing a large loss of historical information in the sunken ship, which is not conducive to the further archaeology of archaeologists; at the same time, the salvage operation on the sea surface and the seabed has a long period of time , which is greatly affected by the marine climate; especially for the ancient sunken ships and the ancient cultural relics on them, it is more difficult to protect and restore, which will bring unpredictable difficulties to the archaeological cause

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