A self-weight backfilling type submarine cable protection device

By using a self-weight backfilling submarine cable protection device, streamlined curved surfaces and Bernoulli effect are utilized to achieve active backfilling of sediment, solving the problems of easy erosion and complex construction of submarine cable protection measures, and improving the protection effect and construction efficiency.

CN122092126APending Publication Date: 2026-05-26SUN YAT SEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUN YAT SEN UNIV
Filing Date
2026-01-13
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing submarine cable protection measures are easily eroded by tides and waves, resulting in suspension, instability, lack of self-repair capability, complex construction and high maintenance costs, and are prone to secondary erosion.

Method used

The self-weight backfilling submarine cable protection device includes an upper cover shell, a lower trough, guide vanes, and a fixing base. The modular design simplifies installation, and the streamlined curved surface and Bernoulli effect are used to achieve active backfilling of sediment, forming a stable protective layer.

Benefits of technology

It improves the long-term erosion resistance of submarine cables, reduces the difficulty of construction and maintenance, extends service life, adapts to different water depths and geological conditions, and has self-healing capabilities.

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Abstract

This invention discloses a self-weight backfilling submarine cable protection device, comprising: an upper cover shell, a lower trough, a fixing base, and guide wings; the upper cover shell and the lower trough are detachably connected; the fixing base is disposed at both ends of the lower trough for limiting the submarine cable; the guide wings are symmetrically disposed on both sides of the lower trough and integrally formed with the lower trough; a backfilling trough is provided inside the lower trough, and the backfilling trough is placed between the fixing bases; this invention reduces the construction difficulty of the protection device and improves the convenience of underwater installation while ensuring structural stability; it optimizes and weakens the scouring effect of ocean currents on the seabed and the sediment around the cable; it achieves long-term stability of the backfilled sediment, preventing secondary scouring that could lead to cable exposure; and it meets strength requirements while improving the device's corrosion resistance and service life in the marine environment.
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