KR101549061B1 - Method of recover to submarine cables - Google Patents

Abstract

The present invention relates to a method for recovering a submarine cable which systematically establishes a recovering process of a submarine cable when recovering the submarine cable to prevent damage to the submarine cable while recovering the submarine cable and shorten recovering time. The method for recovering a submarine cable comprises: a submarine cable cutting step of cutting a damage prediction point of the submarine cable; a first damage detection step of bringing one side of the submarine cable which has undergone the submarine cable cutting step to a ship to detect whether the one side of the submarine cable is damaged and remove a damaged portion depending on whether the one side of the submarine cable is damaged; a first submarine cable lowering step of lowering the one side of the submarine cable which has undergone the first damage detection step; a second damage detection step of bringing the other side of the submarine cable to the ship to detect whether the other side of the submarine cable is damaged and remove a damaged portion depending on whether the other side of the submarine cable is damaged; a first submarine cable connection step of connecting an end of the other side of the submarine cable which has undergone the second damage detection step and an end of one side of a recovery cable; a moving installation step of lowering the other side of the submarine cable which has undergone the first submarine cable connection step to a seabed and moving the ship to the one side of the submarine cable; a second submarine cable connection step of bringing the one side of the submarine cable to the ship which has under gone the moving installation step to connect an end of the one side of the submarine cable and an end of the other side of the recovery cable; a submarine cable reinforcing step of reinforcing a connection section of the submarine cable and the recovery cable; and a second submarine cable lowering step of lowering the submarine cable installed on a reinforcing quadrant to the seabed.

Description

{Method of recovering submarine cables}

The present invention relates to a submarine cable restoration method, and more particularly, to a submarine cable restoration method capable of restoring a damaged portion by lifting a damaged submarine cable and laying it on the seabed.

Generally, when cables can not be connected to the ground due to circumstances such as power and communication-free book areas, power lines between island areas are connected by submarine cable to power and communication.

The above-mentioned submarine cable is a cable installed in a river, lake, or sea for the purpose of supplying electricity or communication, and refers to a submarine cable installed in a river and a lake and a submarine cable installed in the sea.

Such submarine cable is likely to be damaged by the anchor of the ship or by the spike of the farm when it is installed in the state exposed to the sea floor.

Thus, it is more desirable that the submarine cables physically embed them in the seabed material, rather than merely laying the submarine cables on the surface of the seabed material on the seabed. This provides a more stable and protectable environment for submarine cables, and in particular prevents damage or disconnection of submarine cables caused by commercial fishing activities. And the depth of burial beneath the surface of the seabed material is determined by the function and location of the submarine cable and the type of seabed material formed on the seabed, Meters.

In maintenance of the submarine cable buried as described above, the undersea cable is exposed from the underside surface, and then the submarine cable is repaired.

Conventional repair work on submarine cable should first find the damage point of submarine cable within the error range by OTDR (Optical Time-Domain Reflectometer) or TDR (Time-Domain Reflectometer) do. After that, the ship is moved to the damaged part, the submarine cable is cut, and the damaged part of the submarine cable is found and a new submarine cable is connected from the ship to install it.

However, in the above-mentioned prior art, when the submarine cable is twisted and the portion connected to the new submarine cable descends from the ship to the sea floor when the cable is lifted and re-installed to the ship after cutting the submarine cable, the self weight of the submarine cable, There is a problem that damage due to the maritime / seabed environment occurs frequently, which causes delays in the repair process, which increases the burden of human, material, and temporal costs.

Korean Patent Publication No. 10-2004-0048418 (June, 2004) Korean Patent Publication No. 10-2012-0039827 (2012.04.26)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a submarine cable repair system, The purpose of the cable repair method is to provide.

According to another aspect of the present invention, there is provided a method of recovering a damaged submarine cable, the method comprising: a submarine cable cutting step of cutting the expected damage point of the submarine cable; A first damage detection step of detecting damage by lifting one side of the submarine cable through the submarine cable cutting step with the ship and removing the damaged part according to the damage; A first submarine cable descending step of descending one side of the submarine cable through the first damage detection step; A second damage detection step of detecting the damage by lifting the other side of the submarine cable with the ship and removing the damaged part according to the damage; A first submarine cable connection step of connecting the other end of the submarine cable through the second damage detection step and one end of the restoration cable; A moving installation step of moving the ship in one direction of the submarine cable while lowering the other side of the submarine cable through the first submarine cable connection step to the sea floor; A second submarine cable connection step of lifting one side of the submarine cable with the ship through the movement installation step and connecting one end of the submarine cable and the other end of the restoration cable; A submarine cable reinforcing step of reinforcing a connection section of the submarine cable and the restoration cable; And a second submarine cable descending step of descending the submarine cable installed in the reinforcement quadrant to the seafloor.

The vessel is provided with a cutting means for cutting the submarine cable, a drum controller on which the drum wound with the recovery cable is mounted, a recovery cable installed on the front side or a necessary position of the drum controller, A connecting container for preventing the connection space between the bell mouth and the cableway for guiding the submarine cable to a target location, the connection space between the restoration cable and the cut bottom cable, from the external environment, and a connection section for connecting the recovery cable and the submarine cable And a reinforcement quadrant installed in the reinforcement member.

The step of lowering the first submarine cable includes fixing a waterproof cap to one end of the submarine cable through the first damage detection step, connecting the swivel to the waterproof cap, Connecting the weight and the position indicator to a second weight connection, and sequentially lowering the weight and the weight of one side of the submarine cable.

As described above, according to the present invention, the following effects can be expected.

By systematically establishing replacement of undersea cables, there is an advantage in that it is possible to safely carry out dangerous operations for handling heavy objects at sea.

In addition, there is an advantage in that safety accidents can be prevented, and reliability and operability of the operation can be improved and the air can be shortened.

In addition, it is possible to prevent the secondary damage of the submarine cable during the recovery process, thereby making it possible to reduce the recovery failure rate.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of equipment provided to a ship and a ship according to the present invention; FIG.
2 is a view showing a state in which the submarine cable is cut by the cutting means according to the present invention.
3 is a view showing a state in which one side of a submarine cable is lifted to a ship according to the present invention.
4 is a view showing a state in which one side of a submarine cable is lowered in a ship according to the present invention.
Fig. 5 is a view showing one side of the submarine cable shown in Fig. 4. Fig.
6 is a view showing a state in which the other side of a submarine cable is lifted to a ship according to the present invention.
7 is a view showing a connection operation between the other end of the submarine cable and one end of the restoration cable according to the present invention.
8 is a view illustrating a state in which a ship is moved to one side of a submarine cable while the other side of a submarine cable connected to a restoration cable according to the present invention is lowered.
9 is a view showing a connection operation between one side of the submarine cable and the other end of the restoration cable according to the present invention.
10 is a view showing a state in which a submarine cable restored to the reinforcement quadrant according to the present invention is installed.
FIGS. 11 and 12 illustrate the lowered undersea cable according to the present invention.
13 is a view showing a drum controller according to the present invention.
14 is a view showing a bellmouth according to the present invention.
15 and 16 are views showing a curved way and a horizontal way according to the present invention.
17 is a diagram illustrating a reinforcement quadrant according to the present invention.
18 is a view showing a connection operation of two subsea cables.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Prior to the description, if undersea cables are damaged and transmission / reception failures occur, it is recommended that the submarine cable be damaged by optical time-domain reflectometer (OTDR) or time domain reflectometer (TDR) And then the ship is moved to the sea to recover the submarine cable. The present invention provides a method for restoring the submarine cable in a state in which at least one submarine cable is exposed on the seabed surface, thereby assisting the understanding of the present specification.

The submarine cable restoration method of the present invention is characterized in that the submarine cable restoration method includes a submarine cable cutting step, a first damage detection step, a first submarine cable descent step, a second damage detection step, a first submarine cable connection step, A reinforcement quadrant installation step and a second submarine cable descending step.

As shown in FIG. 1 schematically showing a ship and equipment provided in a ship according to the present invention and FIG. 2 showing a state in which a submarine cable is cut by a cutting means according to the present invention, The ship is equipped with the necessary equipment to restore the ship is carried out. In detail, the ship is provided with a lifting means 100, a cutting means 1000, a drum controller 2000, a bellmouth 3000, a cableway 4000, a connection container 5000 and a reinforcement quadrant 6000.

The lifting means 100 may be a crawler crane capable of lifting a submarine cable C, which is heavy, for lifting and lowering the submarine cable C, and moving the submarine cable C from a ship.

In addition, it is natural that the cutting means 1000 is a hydraulic cutter for cutting the submarine cable (C) and is watertight so as to be usable in water. The ship may further include a hydraulic hose for supplying and recovering hydraulic pressure for driving the cutting means 1000, a hydraulic tank, a hydraulic pump, and a hydraulic control panel for controlling the hydraulic hose.

13, 14, 15, 16 and 17, which show the drum controller, the bellmouth, the curved way, the horizontal way and the reinforcing quadrant according to the present invention, The controller 2000 has a structure in which a drum 2100 on which a recovery cable C3 for replacing a consumed part is cut is prepared and a rotary shaft 2200 mounted on the drum 2100 is mounted. Is rotatably coupled to the ball bearings on both sides of the support frame 2300. [ The ship is further provided with a driving winch interlocked with the rotating shaft 2200 so that the rotating shaft 2200 can be rotationally driven.

The bell mouth 3000 and the cableway 4000 guide the recovery cable C3 or a submarine cable C which is installed at a necessary position or a predetermined position of the drum controller 2000 or the submarine cable C lifted by the ship do.

The bell mouth 3000 includes a first upper frame 3100 and a first lower frame 3200. The first upper frame 3100 includes a pair of first side members 3110 and a plurality of And a first horizontal roller member 3120.

The first side members 3110 are horizontally disposed so as to face each other, and the rear ends thereof are spaced apart from each other by a distance corresponding to the width of the drum 2100. The front ends of the first side members 3110 are spaced apart from each other, And are spaced apart from each other by a relatively longer interval than the outer diameter of the restoring cable (C3).

In addition, each of the first horizontal roller members 3120 is rotatably supported at a lower portion of the recovering cable C3 to be wound, and is rotatably installed between the first side members 3110, (3110) from the rear end to the upper end. In order to reinforce the first horizontal roller member 3120 except for the first horizontal roller member 3120 coupled to the rear end and the upper end of the first side member 3110 of the first horizontal roller member 3120, A central member 3130 may be further disposed between the first side members 3110 so as not to interfere with the rotation of the first horizontal roller members 3120. [ In addition, a plurality of first vertical roller members 3140 are rotatably installed along the longitudinal direction of the first side member 3110 on the upper side of each of the first side members 3110, .

The first lower frame 3200 includes a plurality of first support members 3210 and a first reinforcement member 3220.

Each of the first support members 3210 is provided along the longitudinal direction at a lower portion of each of the first side member 3110 and the center member 3130 and the first side member 3110 and the center member 3130 are provided, So that the first side member 3110 and the center member 3130 are supported from the deck of the ship. Each of the first support members 3210 provided at the rear end of each of the first side member 3110 and the center member 3130 includes a first support member 3210 and a second support member 3210. When the drum 2100 is mounted on the drum controller 2000, Each first support member 3210 provided at the front end of each of the first side member 3110 and the central member 3130 has a height such that one horizontal roller member 3120 can be positioned relatively low, For example, an operator may use the submarine cable C and the recovery member 3210 so as to have a relatively longer height than the height of each of the first support members 3210 provided at the rear ends of the first side member 3110 and the center member 3130, So that the cable C3 has a height that does not allow the waist to fall during the connection operation.

In addition, the first reinforcing member 3220 is installed between the first supporting members 3210 to reinforce the first supporting member 3210.

Next, the cableway 4000 is installed in front of or at a required position of the bell mouth 3000, and includes at least one curved way 4100 and at least one horizontal way 4200. The curved way 4100 is formed in a circular arc shape having a predetermined curvature and comprises a second upper frame 4110 and a second lower frame 4120.

The second upper frame 4110 includes a pair of second side members 4111 and a plurality of second horizontal roller members 4112.

First, each of the second side members 4111 is formed in an arc shape having a predetermined curvature, and disposed horizontally in opposition to each other with a width corresponding to the front end of the first side member 3110. The second side member 4111 may have a quarter circular arc shape having a certain radius of curvature or a circular arc having a relatively short length.

Each of the second horizontal roller members 4112 is installed between the second side members 4111 so as to be rotatable at a predetermined interval along the longitudinal direction.

Here, a plurality of second vertical roller members 4113 are rotatably installed along the longitudinal direction of the second side member 4111 on the upper side of each of the second side members 4111, It would be desirable to prevent departure.

The second lower frame 4120 includes a plurality of second support members 4121 and a second reinforcement member 4122. Each of the second support members 4121 is provided at a lower portion of each of the second side members 4111 along the longitudinal direction. The height of the second support member 4121 is set to a height corresponding to the height of the first support member 3210 installed at the front end of each of the first side member 3110 and the center member 3130. In addition, the second reinforcement member 4122 is installed between the second support members 4121 to reinforce the second support member 4121.

In addition, the horizontal way 4200 is installed in front of the bell mouth 3000 or the curved way 4100, and includes a third upper frame 4210 and a third lower frame 4220. The third upper frame 4210 includes a pair of third side members 4211 and a plurality of third horizontal roller members 4212.

Each of the third side members 4211 is horizontally disposed to face each other and has a width corresponding to the width of the first side member 3110 or the second side member 4111.

Each of the third horizontal roller members 4212 is rotatably installed between the third side members 4211 so as to be spaced apart from each other along the longitudinal direction.

It is preferable that a plurality of third vertical roller members 4213 are rotatably installed on the upper side of each of the third side members 4211 along the longitudinal direction to prevent the recovery cable C3 from being separated .

In addition, the third lower frame 4220 includes a plurality of third support members 4221 and a third reinforcement member 4222. Each of the third support members 4221 is installed at a lower portion of each of the third side members 4211 along the longitudinal direction. The height of the third support member 4221 is set to a height corresponding to the height of the second support member 4121. In addition, the third reinforcing member 4222 is installed between the third supporting members 4221 to reinforce the third supporting member 4221.

Next, the connection container 5000 provides a place for preventing exposure of the restoration cable C3 and the submarine cable C from the external environment when the submarine cable C is connected. The connection container 5000 is formed in a rectangular box- Both sides are opened so that the restoration cable C3 and the submarine cable C guided by the horizontal way 4220 can be positioned inside the connection container 5000.

The reinforcement quadrant 6000 is provided in a connection section between the recovery cable C3 and the submarine cable C to prevent the connection section from being damaged when the recovered submarine cable is lowered. 6100, a lower connection frame 6200 and a plurality of internal reinforcing frames 6300.

The cable receiving frame 6100 receives and fixes the recovered submarine cable, and its length is relatively longer than the connection section of the submarine cable to be restored (the section formed by connecting the recovery cable after the damaged portion of the submarine cable is cut off) And the shape is formed by a C-shaped channel, and both sides are rounded so as to have a track shape in order to prevent damage to the connection section of the recovered submarine cable. Here, it is desirable to provide a round bar at both ends of the cable receiving frame 6100 to prevent damage to the recovered submarine cable.

The lower connection frame 6200 connects both ends of the cable receiving frame 6100 and each of the inner reinforcing frames 6300 is installed between the cable receiving frame 6100 and the lower connection frame 6200, truss structure.

In addition, the ship equipped with the above-described devices can operate the DGPS (Differential Global Positioning System) mounted thereon to accurately determine the position of the ship necessary for each step of the submarine cable restoration method according to the present invention, It is desirable to control the position of the ship by operating a plurality of anchors.

The submarine cable cutting step is performed by placing the vessel equipped with the above-described equipment at the expected damage point of the submarine cable (C). 2, the step of cutting the submarine cable is a step of cutting the expected damage point of the submarine cable C detected on the land, and the cutting means 1000, which is lowered from the ship, To break the expected damage point of the submarine cable (C).

As shown in FIG. 3, the first damage detection step may include a step of disconnecting one side of the submarine cable having undergone the submarine cable cutting step from the ship, To detect the damage, and to remove the damaged part according to the damage.

In detail, in the first damage detection step, one side C1 of the submarine cable from which the damage prediction point is cut is connected to one side of the cable returning rope, the other side of the cable returning rope is connected to the lifting means 100, (100) is operated and salvaged to the ship. Here, the ship must lift one side C1 of the submarine cable while being moved in one direction of the submarine cable before lifting one side C1 of the submarine cable. This is because if the ship does not move in one direction of the submarine cable and pulls the submarine cable at the expected damage point, it pulls one side (C1) of the submarine cable.

Then, one side C1 of the submarine cable lifted by the ship is detected by using OTDR (Optical Time-Domain Reflectometer) or TDR (Time-Domain Reflectometer) method. If the damaged portion is detected, the cutting means 1000 is repeatedly reproduced until the damaged portion is not detected.

4, which illustrates a state where one side of the submarine cable is lowered in the ship according to the present invention, and FIG. 5 shows one side of the submarine cable shown in FIG. 4, The cable descending step is a step of watertighting one side (C1) of the undersea cable where damage is not detected and descending to the sea floor. Specifically, a waterproof cap (P) is fixed to one end (cut portion) of the submarine cable (C1) to be firmly fixed. The swivel S and the weight W are connected to the first weight connecting rope R1 after connecting a swivel S to the waterproof cap P. Then, Then, the weight W and the position indicator part B are connected by a second weight connecting rope R2. Then, the lifting means 100 is operated to perform a descending operation so that one side C1 of the submarine cable is first seated on the seabed surface, and then the weight W is sequentially seated on the seabed surface.

The waterproof cap P is watertight at one end C1 of the submarine cable and the swivel S is twisted when the first weight connecting rope R1 and the first weight connecting rope C1 of the submarine cable are lowered And the weight (W) is for preventing one side (C1) of the submarine cable from being separated by an external environment such as algae when descending, and the position marker (B) floats on the sea surface W) to be detected. The first weight connecting rope R1 has a length of about 1.5 times the depth of the water so that when the one side C1 of the submarine cable is lifted, the weight W is lifted first, To be lifted.

6, the second damage detection step may include detecting the second side C2 of the submarine cable by lifting the ship by the ship, as shown in FIG. 6 showing the state where the other side of the submarine cable is lifted to the ship according to the above- To detect the damage, and to remove the damaged part according to the damage. Before the second damage detection step, it is natural that the ship should be moved to the other side of the submarine cable and then the other side C2 of the submarine cable should be lifted. The detailed description of the lifting and damaging of the other side of the submarine cable C2 and the removal of the damaged portion will be omitted because they are duplicated with the first damage detection step.

7, the first submarine cable connection step may include a second damage detection step and a second damage detection step, as shown in FIG. 7, which illustrates a connection operation between the other end of the submarine cable according to the present invention and one end of the restoration cable And connecting the other end (C2) end of the rough submarine cable to one end of the restoration cable (C3).

In detail, the first submarine cable connection step is performed in the following order. The lifting means 100 is operated to install the connection container 5000 at a required position of the ship.

The bell mouth 3000 and the cableway 4000 are provided in front of the drum controller 2000 on which the drum 2100 is mounted to install one end of the recovery cable C3 inside the connection container 5000 And another cableway 4000 is installed on the opposite side to place the other end C2 of the submarine cable inside the connection container 5000. [

Thereafter, the other end (C2) of the submarine cable and one end of the restoration cable (C3) are connected to each other within the connection container (5000), and all parts of the connection container (5000) So that the first submarine cable connection step can be completed. When the connection between the other end C2 of the submarine cable and one end of the recovery cable C3 is completed, the lifting means 100 is operated to move the connection container 5000 so as not to interfere with the next operation.

Next, as shown in FIG. 8 showing a state in which the ship is moved to one side of the submarine cable while the other side of the submarine cable connected to the above-described drawings and the repair cable according to the present invention is lowered, (C1) of the submarine cable while lowering the other side (C2) of the submarine cable through the first submarine cable connection step to the bottom of the sea.

Specifically, since the other end (C2) of the submarine cable is connected to one end of the restoration cable (C3) and the other end (C2) of the submarine cable is connected to the restoration cable (C3) The other side C2 of the submarine cable is lowered and is laid on the sea floor so that the ship can move in the direction of one side C1 of the submarine cable, . ≪ / RTI >

As shown in FIG. 9, the second submarine cable connecting step is a step of connecting the submarine cable to the other end of the restoration cable. And lifting one side C1 of the submarine cable to connect one end C1 of the submarine cable and the other end of the restoration cable C3.

In detail, the second submarine cable connection step is performed in the following order.

The lifting means 100 and the second weight connecting rope R2 are connected to each other by operating the lifting means 100 so that the weight W and one side of the submarine cable C1) to the ship in succession.

Thereafter, the other end of the restoring cable C3 formed by cutting the other end of the restoring cable C3 is air-tightly sealed. Then, the other end of the restoring cable C3 is housed in the connecting container 5000, (100) is operated to install the connection container (5000). Here, the length of one end portion and the other end portion of the restoration cable C3 are cut to have a length that is relatively longer than the length of the submarine cable consumed in the restoration process.

Next, the cableway 4000 is installed to place one end C1 of the submarine cable at the opposite side of the other end of the recovery cable C3 in the connection container 5000.

Then, one end (C1) of the submarine cable and the other end of the restoration cable (C3) are connected to each other in the connection container (5000), and all parts of the connection container (5000) So that the first submarine cable connection step can be completed. When the connection between the end C1 of one side of the submarine cable and the other end of the restoration cable C3 is completed, the lifting means 100 is operated to move the connection container 5000 so as not to interfere with the next operation .

10, which shows a state in which a submarine cable restored to the reinforcement quadrant according to the present invention is installed, the submarine cable reinforcement step includes a submarine cable C and a recovery cable C3 of the submarine cable (C) by reinforcing the connection section of the submarine cable (C) through the second submarine cable connection step.

Specifically, after the reinforcement quadrant 6000 is laid on a ship, a connection section of a submarine cable formed by connecting a recovery cable (C3) between one end (C1) of the submarine cable and the other end is connected to the reinforcement quadrant 6000 In the cable receiving frame 6100 of the first embodiment.

Thereafter, the reinforcement quadrant 6000 and the lifting means 100 are pro-connected by a plurality of reinforcing quadrant connections to complete the reinforcement quadrant installation step.

11 and 12, the second submarine cable descending step may include a submarine cable C installed in the reinforcement quadrant, and a second submarine cable descending step, And descending to the sea floor.

The seeking of the submarine cable C on the sea floor by descending the reinforcement quadrant 6000 to the sea floor by operating the lifting means 100 projacently connected with the reinforcement quaternary 6000 in detail, to be.

When the reinforcement quadrant 6000 descends, the reinforcement quadrant 6000 is lowered while moving the ship in a direction perpendicular to the direction in which the submarine cable is installed on the sea floor, It is possible to rest on the seabed surface while preventing damage to the connection section of the submarine cable C restored upon descent.

For example, if the submarine cable (C) is installed in the east-west direction and the ship is to descend the recovered submarine cable from the south side, move the ship to the south, lower the recovered submarine cable, To be placed on the surface.

Finally, it is apparent that the submarine cable restoration method according to the present invention can be performed on at least one submarine cable, as shown in FIG. 18, which shows the operation of simultaneously connecting two submarine cables.

As described above, the submarine cable restoration method according to the present invention provides a submarine cable restoration method capable of systematically establishing the restoration process of the submarine cable to prevent damage to the submarine cable that may occur during the restoration process, .

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. something to do.

100: lifting means
1000: Cutting means
2000: Drum controller 2100: Drum
2200: rotating shaft 2300: supporting frame
3000: Bell mouth mouse 3100: First upper frame
3110: first side member 3120: first horizontal roller member
3130: central member 3140: first vertical roller member
3200: first lower frame 3210: first supporting member
3220: first reinforcing member
4000: Cableway 4100: Curved Way
4110: second upper frame 4111: second side member
4112: second horizontal roller member 4113: second vertical roller member
4120: second lower frame 4121: second supporting member
4122: second reinforcing member
4200: Horizontal way 4210: Third upper frame
4211: third side member 4212: third horizontal roller member
4213: third vertical roller member 4220: third lower frame
4221: third supporting member 4222: third reinforcing member
5000: Connection Container
6000: reinforcement quadrant 6100: cable receiving frame
6200: lower connection frame 6300: inner reinforcement frame
C: Submarine cable C1: One side of submarine cable
C2: the other side of submarine cable C3:
P: Waterproof cap S: Swivel
R1: First weight connection rope W: Weight
R2: second weight connecting rope

Claims (3)

A method for repairing damage of a submarine cable (C)
A submarine cable cutting step of cutting the expected damage point of the submarine cable (C) after placing the ship at the expected damage point of the submarine cable (C); A first damage detection step of detecting damage by lifting one side C1 of the submarine cable having undergone the submarine cable cutting step with the ship and removing the damaged part according to the damage; A first submarine cable descending step of descending one side (C1) of the submarine cable through the first damage detection step; A second damage detection step of detecting damage by lifting the other side (C2) of the submarine cable with the ship and removing the damaged part according to the damage; A first submarine cable connection step of connecting the other end (C2) end of the submarine cable through the second damage detection step and one end of the restoration cable (C3); A moving installation step of moving the ship in the direction of one side (C1) of the submarine cable while lowering the other side (C2) of the submarine cable through the first submarine cable connection step to the sea floor; A second submarine cable connection step of lifting one side C1 of the submarine cable with the ship through the above-mentioned moving and installing step, thereby connecting one end C1 of the submarine cable and the other end of the restoration cable C3; A submarine cable reinforcing step of reinforcing a connection section of the submarine cable (C) and the restoration cable (C3); And a second submarine cable descending step of descending the submarine cable (C) installed in the reinforcing quadrant to the sea floor,
In the vessel,
A cutting means 1000 for cutting the submarine cable C,
A drum controller 2000 in which the drum 2100 on which the recovery cable C3 is wound is mounted,
A bellmouth 3000 and a cableway 4000 which are installed in front of or in the required position of the drum controller 2000 and guide the recovering cable C3 or the submarine cable C lifted by the ship to a destination, ,
A connection container 5000 for preventing the connection space between the recovery cable C3 and the disconnected submarine cable C from being exposed from the external environment,
And a reinforcement quadrant (6000) installed in a connection section between the recovery cable (C3) and the submarine cable (C). delete The method according to claim 1,
Wherein the first submarine cable descending step comprises:
(C1) end of the submarine cable having undergone the first damage detection step, and fixing the waterproof cap (P)
Connecting a swivel S to the waterproof cap P and connecting the swivel S and the weight W to a first weight connecting rope R1,
Connecting said weight (W) and position indicator part (B) with a second weight connection rope (R2)
And sequentially lowering one side (C1) of the submarine cable and the weight (W).

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