Cable Laying Method in Underground Rock of Seabed

Abstract

The invention belongs to the technical field of submarine pipeline laying, and aims to solve the problem that the prior art cannot realize cable laying in the seabed underground rock, and in particular relates to a cable laying method in the seabed underground rock. The land drills the first pilot hole to the preset point on the seabed, and automatically floats up. The first drilling assembly drives the first cable assembly to lay at the same time; the second drilling assembly drills the second Guide hole, automatic floating, the second drilling assembly back drills and expands at the same time drives the second cable assembly to be laid; through the cable docking system, the connection between the first cable assembly and the second cable assembly is realized, and the automatic movement to the corresponding The caisson where the seabed default point is located.

Description

technical field [0001] The invention belongs to the technical field of laying submarine pipelines, and in particular relates to a method for laying cables in underground rocks on the seabed. Background technique [0002] The existing marine communication and detection network is laid on the surface of the seabed, which is easy to be damaged and eavesdropped, and has huge security risks; for example, it is threatened by sharks, anchors, fishing boat trawls, etc. Listen to the object; for this reason, we propose to build cable ducts in the underground rocks of the seabed, and put optical cables and cables in the ducts for protection, which can greatly improve safety and confidentiality. [0003] To build cable pipelines in the subsurface rocks, long-distance subsea drilling is required in the underground subsea rocks. Due to the limitation of curvature, conventional drilling methods are difficult to meet the drilling requirements of submarine cable pipelines; existing submarin...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, that is, in order to solve the problem that the prior art cannot realize the cable laying in the seabed underground rock, the present invention provides a cable laying method in the seabed underground rock, the method includes the following steps: step S100, through the first A drilling assembly drills a first pilot hole from the first land to a preset point on the seabed and detects the pressure information on the first drill bit. If the pressure information is less than the preset pressure threshold, the first automatic floating module drives the first drill bit to float up To the sea surface; after floating to the sea surface, connect the first drill bit and the first cable assembly on the laying ship and drive the first cable assembly to back drill and expand along the first guide hole to lay the first cable assembly;

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