Submarine cable construction method for hydraulic power scouring, discharging, dredging and excavation

A submarine cable and construction method technology, which is applied in the direction of earth mover/excavator, mechanically driven excavator/dredger, construction, etc., can solve the problems of cable damage, unimaginable consequences, and high construction risk, so as to avoid damage , reduce construction risks, and achieve high dredging efficiency

A submarine cable and construction method technology, which is applied in the direction of earth mover/excavator, mechanically driven excavator/dredger, construction, etc., can solve the problems of cable damage, unimaginable consequences, and high construction risk, so as to avoid damage , reduce construction risks, and achieve high dredging efficiency

CN108643258AInactive Publication Date: 2018-10-12NO 1 ENG COMPANY CO LTD OF CCCC FIRST HARBOR ENG COMPANY
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  • Submarine cable construction method for hydraulic power scouring, discharging, dredging and excavation

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A construction method for excavating submarine cables by hydraulic flushing and desilting, characterized in that the specific steps are as follows:

[0027] (a) Transform the cutter suction dredger into a flushing suction dredger, remove the reamer head of the original cutter suction dredger, add a flushing pipe along the upper circumference of the suction pipe head, and install several A high-pressure water gun 2, a rubber cushion 3 is provided at the bottom of the mud suction pipe 1, and a rubber hose 4 is connected with a flange at the end;

[0028] (b) After the dredger sucks the mud, it is transported to the mud barge through the fully enclosed mud discharge pipe to avoid polluting the sea area;

[0029] (c) After the suction dredger is positioned in the dredging construction area, loosen the steel cable of the bucket bridge winch in front of the ship, put the dredge nozzle into the water at a slow speed in a vertical fan shape, excavate according to the design, an...

Embodiment 2

[0035] A construction method for excavating submarine cables by hydraulic flushing and desilting, characterized in that the specific steps are as follows:

[0036] (a) Transform the cutter suction dredger into a flushing suction dredger, remove the reamer head of the original cutter suction dredger, add a flushing pipe along the upper circumference of the suction pipe head, and install several A high-pressure water gun 2, a rubber cushion 3 is provided at the bottom of the mud suction pipe 1, and a rubber hose 4 is connected with a flange at the end;

[0037] (b) After the dredger sucks the mud, it is transported to the mud barge through the fully enclosed mud discharge pipe to avoid polluting the sea area;

[0038] (c) After the suction dredger is positioned in the dredging construction area, loosen the steel cable of the bucket bridge winch in front of the ship, put the dredge nozzle into the water at a slow speed in a vertical fan shape, excavate according to the design, an...

Embodiment 3

[0044] A construction method for excavating submarine cables by hydraulic flushing and desilting, characterized in that the specific steps are as follows:

[0045] (a) Transform the cutter suction dredger into a flushing suction dredger, remove the reamer head of the original cutter suction dredger, add a flushing pipe along the upper circumference of the suction pipe head, and install several A high-pressure water gun 2, a rubber cushion 3 is provided at the bottom of the mud suction pipe 1, and a rubber hose 4 is connected with a flange at the end;

[0046] (b) After the dredger sucks the mud, it is transported to the mud barge through the fully enclosed mud discharge pipe to avoid polluting the sea area;

[0047] (c) After the suction dredger is positioned in the dredging construction area, loosen the steel cable of the bucket bridge winch in front of the ship, put the dredge nozzle into the water at a slow speed in a vertical fan shape, excavate according to the design, an...

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Abstract

The invention discloses a submarine cable construction method for hydraulic power scouring, discharging, dredging and excavation. The method specifically comprises the following steps that a cutter suction dredger is transformed into a scouring suction type suction ship; after mud suction, the mud is conveyed to a dredger pontoon in a totally-closed manner through a mud discharging pipeline to beoutwards transported; and dredging and mud suction are conducted till a cable is completely exposed. The method is a safe and efficient dredging and excavation technology. The water flow scouring principle is utilized, soil excavating and conveying are conducted under the action of hydraulic power, then, high-pressure water guns are used for spraying out a dense high-speed water column to cut andpulverize a soil mass, the soil is wetted and disintegrated, slurry and clod mixture is formed and then is sucked and conveyed to the dredger pontoon through a slurry pump and a mud discharging pump to be subjected to shipment and outwards transported. The method has the beneficial effects that the high-pressure water flow is utilized for cutting the soil mass, the contact part of sludge suction equipment and the mud face is a hose, and therefore the contact between the bottom of the slurry pump and the mud face is soft contact, accordingly, damage to the cable from machines is avoided, meanwhile, the dredging efficiency is high, and construction risks are reduced.

Description

technical field [0001] The invention relates to the technical field of submarine cable construction, in particular to a construction method for excavating submarine cables by hydraulic flushing, dredging and dredging. Background technique [0002] Existing construction methods In the dredging and excavation construction process, the traditional dredging machinery mainly includes grab boats, drag suction boats and cutter suction boats. During the construction process of these conventional construction techniques, due to the use of hard Excavation tools are very likely to cause damage to cables during the excavation process, especially for some cables with outstanding social functions, normal operation, and difficult maintenance. Once damaged, the consequences will be disastrous, and the construction risk is extremely high. Contents of the invention [0003] The invention aims to solve the deficiencies of the prior art, and provides a construction method for excavating subma...

Claims

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Application Information

Patent Timeline
12 Oct 2018
Publication
CN108643258A
IPC
E02F3/88; E02F3/92
CPC
E02F3/885; E02F3/92; E02F3/9262; E02F3/9293
Inventors
安秀山; 张涛