Construction method of offshore deployment of ultra-deep water submarine optical cable junction box

Abstract

The invention relates to a construction method for oversea deployment of a junction box after repair of ultra-deep water submarine optical cables. The method comprises the following steps: using a water depth sounder to measure the water depth of a pre-slected junction box deployment seabed position, and using the conditions of the seabed; performing the final connection of the submarine optical cables; deploying the junction box in the sea through a linear cable deployment machine so as to avoid the damage to the submarine optical cables due to imbalance caused by the different quality of thejunction box and the Omega-shaped submarine optical cables; transferring the stress of the submarine optical cables to a special rope for secure deployment by using the special rope in an accompaniedtying manner; stopping the ship after the junction box is securely deployed in the sea; starting to deploy Omega-shaped submarine optical cable elbows of the submarine optical cables, and synchronously deploying the Omega-shaped elbows by the cable deployment machines on the two sides; and continuing the deployment after an underwater acoustic releaser is connected, and releasing the submarine optical cables via voice control after arriving at the release position. By adoption of the construction method provided by the invention, all deployment works can be completely met in the junction boxdeployment process just by using one submarine optical cable workboat.

Description

technical field [0001] The invention relates to a construction method for safely laying junction boxes and "Ω" submarine cables at sea after repairing ultra-deep water (5000 meters) submarine optical cables, and belongs to the technical field of construction methods in submarine communication optical cable repair projects. Background technique [0002] After more than 20 years of development, submarine communication optical cables undertake more than 90% of the world's international communication tasks and have made outstanding contributions to the global integration process. In domestic and foreign transoceanic submarine optical cable communications, more and more submarine optical cables are laid on the seabed of the ultra-deep ocean with a depth of more than 5,000 meters through various oceans. However, due to crustal movement and defects in the submarine cable or equipment itself, deep-sea submarine optical cables will still encounter failures in such ultra-deep water wi...

AI Technical Summary

Problems solved by technology

However, due to the movement of the earth's crust and the defects of the submarine cable or equipment itself, in such ultra-deep water without any interference from human activities, deep-sea submarine optical cables will still encounter failures

At present, there are few deep-sea optical cables in China because of the continental shelf. There are only some deep-sea optical cables in some waters of the South China Sea, but the general water depth is only about 3000 meters. The engineering technology of offshore deployment belongs to the initial stage of development

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