Method of laying submarine cables

Submarine cable project was recognized as complex and difficult world of large-scale projects. In shallow water, such as less than 200 m water depth using sea cable laying, laying in the deep sea is used. Buried water jet is the main method of burial. Bottom of the device planted a few rows of spray holes in the sides of the parallel distribution, operation, each hole while out to sea spray high pressure water column, seabed sediment will be washed open, the formation of submarine trench; equipment and cable top with a hole, used to guide the cable (fiber optic) to the submarine cable trench bottom, the tide will be automatically filled gully. Laying device towed by the vessel construction progress, and make all kinds of cable through the work instructions. Machines generally do not apply underwater cable laying equipment, self-respect by submarine cable laid in the sea surface.

Ship constantly going forward, and then washed with water a ditch next robot will be placed in cable, then use underwater robot to sediment red back cover cable, and then continues to advance, when the connections are needed when the board first, then complete the and then sealed, and then continue laying. All current fiber-optic submarine cable, the cable has been very small, and all are now laying buried in the soil, that is, the robot under water and then washed into a ditch to be buried in the soil.

Underwater robot is using a high pressure pump, the water pressure to high pressure jet out to come out of the trench. As for maintenance, this is no safeguard at all, usually do not need maintenance, just need to regularly survey the robot under water if there are extra-optic cable can be, if there will be sediment covered up. Also, if broken, with the attenuation can be measured by detecting the specific location, then go to that pulled out, the connections are, or otherwise, are usually cut off the damaged section of all, put a new paragraph.