Method for realizing deep buried cable salvage by using high pressure water spraying shallow sea bury flushing device

Abstract

The invention relates to a method for salving a deep-buried cable by using a high-pressure water-injection shallow sea burying material washing device, which is characterized in that: firstly,a special rope for salving cables is arranged in a high-pressure spray gun; the end of the rope is connected with a salving anchor chain; the anchor chain is connected with a group of roller type slaving anchors; then the a platform is positioned; the high-pressure water-injection shallow sea burying material washing device is laid according to a laying procedure; a high-pressure heavy-flow water pump is started and provided to the high-pressure water-injection shallow sea burying material washing device to cut the seabed; and the roller type anchor hooks the cable and dragging the cable out of the water surface. The method has he advantages of effectively salving failed cables deeply buried through the development and improvement of functions of the prior equipment, saving cost and solving the problem of salving deep-buried cables.

Description

technical field [0001] The invention relates to a method for salvaging deep-buried cables by using a high-pressure water-jet shallow-sea burial device, and belongs to the technical field of seabed deep-buried cable salvage methods. Background technique [0002] At present, the traditional method of salvaging buried submarine cables is generally realized by special salvage anchors, and the buried depth of the salvageable cables is all below 1.5 meters. However, nowadays our submarine cable burial tends to be buried deep, especially along the coast of China. Due to the very flat continental shelf, the water depth within 500 kilometers is shallow and changes very little. At the same time, fishing operations are very frequent along the coast of China. In addition, fishing boats are increasingly equipped with more advanced fishing gear. The traditional burial depth of 1.5 meters in the past is no longer sufficient for the safety protection of cables, which directly affects normal...

AI Technical Summary

Problems solved by technology

However, due to the quality of the submarine cable itself and many unknown factors, such as large-scale movements such as crustal activity, it will still pose a great threat to the cable. Once the cable fails, it will not only bring inconvenience to people such as communication, but also It will cause the country to suffer huge economic losses and damage to the national image