JPH039697B2 - - Google Patents
Info
- Publication number
- JPH039697B2 JPH039697B2 JP19175386A JP19175386A JPH039697B2 JP H039697 B2 JPH039697 B2 JP H039697B2 JP 19175386 A JP19175386 A JP 19175386A JP 19175386 A JP19175386 A JP 19175386A JP H039697 B2 JPH039697 B2 JP H039697B2
- Authority
- JP
- Japan
- Prior art keywords
- cable
- cut
- underwater
- crushing
- cutting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Processing Of Terminals (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、海底OFケーブルの故障修理方法及
びこの方法において使用されるケーブル圧潰装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for repairing failures in submarine OF cables and a cable crushing device used in this method.
（従来の技術）
布設後の海底ケーブルにいかり等にによる外傷
などよつて絶縁破壊や油漏れなどの故障を生じた
場合、通常は故障によつて不良となつた部分を切
断除去し、割り込みケーブルを割り入れ接続して
修理する。この場合、接続作業は言うまでもなく
作業船上で行なわれるが、不良部分の切断除去も
作業船上で行なわれることが望ましい。しかし、
一般に海底OFケーブル（以下単にケーブルとい
という）は重量が大であり、つながつている故障
ケーブルをそのまま作業船上に引揚げるには非常
に大きな力を要して困難な場合があり、無理して
引揚げることができたとしても故障点以外の良部
分をも損傷するおそれがあるので、潜水作業が可
能な場合いわゆる水中切断法を採らざるを得ない
場合があり、有利の場合がある。これは故障点付
近に潜水夫を入れてて故障点を発見させ、ケーブ
ルを故障点において水中切断し（実際には故障部
分は後日の調査等の資料として採取するために故
障点を避けて故障点近傍にて切断することが多
い）、両切断端部を作業船上に引揚げて、ケーブ
ルの浸水部を切断除去し、割り込みケーブルを割
り入れて接続する修理方法である。(Conventional technology) When a submarine cable after being laid has a breakdown such as insulation breakdown or oil leakage due to damage caused by an anchor, etc., the defective part due to the breakdown is usually cut off and removed, and the cable is replaced with an Interrupt and connect to repair. In this case, it goes without saying that the connection work is carried out on the work boat, but it is desirable that the defective portions are also cut and removed on the work boat. but,
In general, submarine OF cables (hereinafter simply referred to as cables) are heavy, and it may be difficult to pull a connected faulty cable onto a work boat without forcing it. Even if it can be lifted up, there is a risk of damaging good parts other than the failure point, so if diving work is possible, the so-called underwater cutting method may have to be used, which may be advantageous. This involves placing a diver near the failure point to discover the failure point, and cutting the cable underwater at the failure point. In this repair method, both cut ends are hoisted onto a work boat, the submerged part of the cable is cut and removed, and a cut-in cable is inserted and connected.
一般に海底ケーブルの修理作業は長時間を要
し、天候及び波浪の状況によつて数日に亘ること
が多く、また切断両端部について同時に作業する
ことが困難であることもあつて、作業船上での接
続作業を行なうまでの間水中切断したケーブルを
海中に沈めておくとが通例である。しかし、ケー
ブルを水中で切断すると切断口から海水ケーブル
中に浸入するとともにケーブル中の油が流出し、
これを長時間海中に放置すると浸水及び油の流出
が更に進行するので、これを防ぐために通常は水
中切断したケーブルのそれぞれ両切断端末を一亘
作業船上に引揚げて鉛キヤツプ等で切断口をシー
ルしてのち、接続作業を開始するまでの間海中に
沈めておく方法がとられている。そして接続作業
を行なうに当り、それぞれケーブルの切断端部を
作業船上に再度引揚げて浸水部分を切断除去し
て、割り込みケーブルを割りれ接続する。これら
の作業は一般には両切断端部において同時ではな
く片端ごとに行なわれる。 In general, repair work on submarine cables takes a long time, often lasting several days depending on the weather and wave conditions, and it is difficult to work on both cut ends at the same time. It is customary to submerge the cut cable underwater until the connection work is carried out. However, when the cable is cut underwater, the oil in the cable leaks out as well as the seawater seeps into the cable from the cut end.
If the cable is left in the sea for a long time, flooding and oil leakage will progress further, so to prevent this, normally both cut ends of the cable cut underwater are hoisted onto a work boat and the cut end is closed with a lead cap, etc. After sealing, the method is to submerge it in the sea until connection work begins. In order to carry out the connection work, the cut ends of each cable are pulled up again onto the work boat, the flooded parts are cut and removed, and the cut-in cables are split and connected. These operations are generally performed on both cut ends one at a time, rather than at the same time.
（発明が解決しようとする問題点）
前記の如くケーブルを水中で切断し切断口を作
業船上にてシールしても、切断時及び引揚げるま
での間に油流出とともにケーブル中に浸水する。
従つて割り込みケーブルを接続する作業に先立つ
て作業船上に引揚げたケーブルの浸水部分を切断
して除去する必要があり、ケーブルのサイズ、水
深等にもよつて差はあるが浸水部分の切除は切断
端末からそれぞれ50ｍ、場合によつては100ｍに
も及ぶことがある。これらの切断除去した部分は
廃棄処分されることになり無駄が大きく、またこ
れに応じ割り込みケーブルも長くなり大きな費用
がかかる。(Problems to be Solved by the Invention) Even if the cable is cut underwater and the cut end is sealed on a work boat as described above, oil spills and water floods into the cable between the time of cutting and the time before the cable is salvaged.
Therefore, prior to the work of connecting the interrupt cable, it is necessary to cut and remove the submerged part of the cable that has been lifted onto the work boat.Although it varies depending on the cable size, water depth, etc., it is necessary to cut off the submerged part. The distance from each cutting terminal may be 50 m, and in some cases up to 100 m. These cut and removed parts will be disposed of, resulting in a large amount of waste, and the length of the interrupt cable will also increase accordingly, resulting in large costs.
また、ケーブルの水中切断時の浸水を少なくし
て浸水長を短くするために、水中切断する以前に
あらかじめ切断点の両側を機械的に圧潰すること
が試みられたが水中でケーブルを十分圧潰する適
当な器具がなかつた。 In addition, in order to reduce the amount of water intrusion when cutting the cable underwater and shorten the length of the water immersion, an attempt was made to mechanically crush both sides of the cutting point before underwater cutting, but the cable was not sufficiently crushed underwater. There was no suitable equipment.
（問題点を解決するための手段及び作用）
本発明は、上記の如き問題点を解決するために
なされたもので、ケーブルの水中切断予定点の両
側をあらかじめ圧潰してケーブル中の油通路をで
きるだけ圧潰して油止めを行ない、更に完全を期
すために絶縁油を充たしたビニル袋の中に鉛キヤ
ツプ等を油漬けにしたものを用意しておき、海底
においてケーブルを切断後直ちに切断口にビニル
袋を被せ直ぐにビニル袋の中の鉛キヤツプを切断
口に被せてケーブル切断口をシールする方法をと
るものである。この方法によるとケーブル切断時
に油漏れするが短時間で切断口がシールされるの
で油漏れも少なく浸水も少なく浸水長が短くなり
しかも従来の如く切断口シールのためにケーブル
を作業船上に引揚げる必要がなくなり、非常に作
業が短縮化される。(Means and effects for solving the problem) The present invention has been made to solve the above problems, and the oil passage in the cable is cut by crushing both sides of the planned underwater cutting point of the cable in advance. Crush the cable as much as possible to stop the oil, and to ensure completeness, prepare a lead cap soaked in oil in a plastic bag filled with insulating oil. This method involves covering the cable cut with a plastic bag and immediately placing a lead cap inside the plastic bag over the cut port to seal the cable cut. With this method, oil leaks when the cable is cut, but the cut end is sealed in a short time, so there is less oil leakage, less water intrusion, and a shorter length of water inundation.In addition, the cable can be hoisted onto the work boat to seal the cut end as in the conventional method. It is no longer necessary, and the work is greatly shortened.
また、上記のケーブルの水中圧潰のために、矩
形状金枠に油圧ジヤツキを取付け、ケーブルを圧
潰装置に取付けができるよう枠の一辺を着脱脱可
能にし、ケーブルを取付け上下から油圧で圧潰す
る構造の水中での操作が簡単なケーブル圧潰装置
を提供する。 In addition, in order to crush the above-mentioned cable underwater, a hydraulic jack is attached to the rectangular metal frame, one side of the frame is made removable so that the cable can be attached to the crushing device, and the cable is attached and crushed using hydraulic pressure from above and below. To provide a cable crushing device that is easy to operate underwater.
（実施例）
以下本発明にによる海底OFケーブルの故障修
理方法の実施例及びこの方法に用いたケーブル圧
潰装置の実施例について説明する。なお、海水中
における作業は潜水夫によつて行なわれ水中TV
カメラ等を用いて作業船上から観視しながら行な
われた。(Example) Hereinafter, an example of a submarine OF cable failure repair method according to the present invention and an example of a cable crushing device used in this method will be described. Please note that the work in the sea is carried out by divers, and the underwater TV
The work was carried out while being observed from the work boat using cameras and other equipment.
第１図において、１は海面、２は海底を示し、
３は海底に布設されている鉄線外装海底OFケー
ブルである。Ａはケーブル３の故障点を示し、故
障部分を後日の調査資料あるいは証拠として採取
するために、故障点Ａを中心とするL1の長さを
資料分としてL1部分に近接するＢを切断予定点
とする。第１図における切断予定点Ｂを含むL2
部分を第２図に示す。第２図に示す如く切断予定
点Ｂを中心として外装のジユート外被２０、鉄線
外装２１及びジユート座床２２を切除し、３トン
の油圧ジヤツキを備えた後記するケーブル圧潰装
置を海底に設置して切断予定点Ｂの両側のそれぞ
れ３カ所の圧潰位置２４においてケーブルシース
２３の上からケーブルを圧潰したのちＢ点におい
てケーブルＡを金切鋸を用いて水中切断し、切断
後直ちにケーブルの切断口を、あらかじ用意して
おいた第３図に示す絶縁油３１が満たされ、この
絶縁油３１中にコツプ状の鉛キヤツプ３２が浸漬
されているビニル袋３０の中に挿入し、ビニル袋
の中の絶縁油３１の中で鉛キヤツプ３２をケーブ
ルの切断口に冠着して外側からかしめて油の流出
及び海水の侵入を封じた。 In Figure 1, 1 indicates the sea surface, 2 indicates the seabed,
3 is a steel wire-clad submarine OF cable laid on the ocean floor. A indicates the failure point of cable 3, and in order to collect the failure part as investigation materials or evidence at a later date, cut B near the L1 part by taking the length of L1 centered on failure point A as the material. This is the planned point. L 2 including planned cutting point B in Figure 1
The parts are shown in Figure 2. As shown in Fig. 2, the exterior juute sheath 20, iron wire sheath 21, and juute seat floor 22 were cut around the planned cutting point B, and a cable crushing device to be described later equipped with a 3-ton hydraulic jack was installed on the seabed. After crushing the cable from above the cable sheath 23 at three crushing positions 24 on each side of the planned cutting point B, the cable A is cut underwater using a hacksaw at point B, and immediately after cutting, the cable is cut at the cut point. Insert it into a plastic bag 30 that has been prepared in advance and is filled with insulating oil 31 shown in FIG. A lead cap 32 was attached to the cut end of the cable in insulating oil 31 and caulked from the outside to prevent oil from leaking and seawater from entering.
次いで、割り込みケーブルを接続するに当た
り、ケーブル切断端部を作業船上に引揚げて、切
断点から約30ｍの部分でケーブルを切断し試料を
採取して調べた結果この部分には浸水が到つてな
いことが確認されたので、あとは従来どおりの方
法によつて、あらかじめ作業船上に用意された割
り込みケーブルと接続した。この作業を他端の切
断端についても行つたのちケーブル３を海底に沈
設した。 Next, when connecting the interrupt cable, the cut end of the cable was hoisted onto the work boat, the cable was cut approximately 30m from the cutting point, and a sample was taken for examination. As a result, water had not reached this part. Once this was confirmed, we connected it to the interrupt cable prepared in advance on the work boat using the conventional method. After performing this work on the other cut end, the cable 3 was sunk into the seabed.
第４図は上記ケーブルの圧潰に使用したケーブ
ル圧潰装置の概要図であり、イは側面図、ロは正
面図である。同図において、４０は組立式の矩形
状金枠であり、短片４０−１は締付ボルト４１に
よつて着脱可能となつており、４２は短片４０−
１の下面に垂設された手動の油圧ジヤツキで、４
２−１はジヤツキ部、４２−２は油圧ポンプであ
る。ジヤツキ部４２−１の下端には円柱状の圧潰
金具４３が装着され、これと平行に同一形状の圧
潰金具４４が矩形状金枠４０の短片４０−２に取
付けられており、４５は油圧ジヤツキ４２が矩形
状金枠４０の前後に振れるのを防ぐための鉄棒で
ある。使用に当つては締付ボルト４１を抜取つて
油圧ジヤツキ４２及び圧潰金具４３とともに短片
４０−１を離脱させ、圧潰金具４４上にこれと直
角にケーブル３を乗せ、離脱してあつた短片４０
−１をもどして矩形状金枠４０を組立て圧潰金具
４３と４４との間にケーブル３を挟み、油圧ジヤ
ツキ４２を手動にて作動させてケーブル３を圧潰
するものである。 FIG. 4 is a schematic view of the cable crushing device used for crushing the cable, with A being a side view and B being a front view. In the figure, 40 is an assembly type rectangular metal frame, short piece 40-1 is removable with a tightening bolt 41, and 42 is short piece 40-1.
4 with a manual hydraulic jack installed vertically on the bottom of 1.
2-1 is a jack section, and 42-2 is a hydraulic pump. A cylindrical crushing metal fitting 43 is attached to the lower end of the jack part 42-1, and in parallel thereto, a crushing metal fitting 44 of the same shape is attached to the short piece 40-2 of the rectangular metal frame 40, and 45 is a hydraulic jack. 42 is an iron bar for preventing the rectangular metal frame 40 from swinging back and forth. In use, the tightening bolt 41 is removed, the short piece 40-1 is removed together with the hydraulic jack 42 and the crushing fitting 43, the cable 3 is placed on the crushing fitting 44 at right angles thereto, and the removed short piece 40 is removed.
-1 is returned, the rectangular metal frame 40 is assembled, the cable 3 is sandwiched between the crushing fittings 43 and 44, and the cable 3 is crushed by manually operating the hydraulic jack 42.
（発明の効果）
本発明の海底OFケーブルの故障修理方法によ
ればケーブルの水中切断予定点の両側をケーブル
圧潰装置を用いてケーブルを圧潰して油の流出及
び浸水をかなりな程度防止し、更に水中切断後直
ちに絶縁油浸漬された鉛キヤツプ等を絶縁油中に
てケーブル切断口に被せせて密封するので、ケー
ブル中の浸水長を短くすることができ、従つて切
断廃棄するケーブル長が短くなり、よつて割り込
みケーブルの長さも短くてよいので無駄が少なく
大幅に資材の節減がなされ、また、ケーブル切断
口のシールのためにケーブル切断端をいつたん作
業船上に引揚げたり、シールした切断端を海中に
沈めたりする作業が不要となるので、作業時間が
大幅に短縮される。海で故障修理作業においては
は特に作業時間の短縮は重要な問題であるので本
修理方法の効果は大きい。(Effects of the Invention) According to the submarine OF cable fault repair method of the present invention, the cable is crushed using a cable crushing device on both sides of the planned underwater cut point of the cable, thereby preventing oil leakage and flooding to a considerable extent. Furthermore, since a lead cap, etc. soaked in insulating oil is placed over the cable cut port immediately after underwater cutting to seal it, the length of water in the cable can be shortened, and the length of the cable to be cut and discarded can be reduced. The length of the cut-in cable can be shortened and the length of the cut-in cable can be shortened, so there is less waste and material can be saved significantly. Since there is no need to submerge the cut end in the sea, the work time is significantly reduced. Reducing work time is particularly important when repairing problems at sea, so this repair method is highly effective.
また、ケーブルの圧潰のため従来は適当な装置
あるいは工具がなかつたが、本発明の、ケーブル
圧潰装置は構造が簡単で持ち運びが容易で、水中
における取扱いも簡単で、しかもケーブルの圧潰
を容易に行なうことができ、この装置の使用によ
つてケーブル浸水長は更に短くなる。 In addition, conventionally there was no suitable device or tool for crushing cables, but the cable crushing device of the present invention has a simple structure, is easy to carry, is easy to handle underwater, and can easily crush cables. By using this device, the cable immersion length can be further reduced.
第１図は海底OFケーブルの海底に布設された
状態を示す図、第２図は本発明の海底OFケーブ
ルの故障修理方法の実施例における水中切断部及
びケーブル圧潰部を示す概要図、第３図は同じく
修理方法の実施例に用いられた切断口密封のため
の絶縁油と鉛キヤツプとが収納されているプラス
チツク袋の概要図、第４図は本発明によるケーブ
ル圧潰装置の概要図でイは側面図、ロは正面図で
ある。
２……海底、３……海底OFケーブル、２４…
…ケーブル圧潰位置、３０……プラスチツク袋、
３１……絶縁油、３２……鉛キヤツプ、４０……
矩形状金枠、４０−１，４０−２……短片、４１
……締付ボルト、４２……油圧ジヤツキ、４３，
４４……圧潰金具、Ａ……故障点、Ｂ……切断予
定点。
FIG. 1 is a diagram showing a submarine OF cable installed on the seabed, FIG. 2 is a schematic diagram showing an underwater cut part and a cable crushing part in an embodiment of the submarine OF cable failure repair method of the present invention, and FIG. The figure is a schematic diagram of a plastic bag containing insulating oil and a lead cap for sealing the cut opening, which was also used in the embodiment of the repair method, and Figure 4 is a schematic diagram of the cable crushing device according to the present invention. is a side view, and b is a front view. 2... submarine, 3... submarine OF cable, 24...
...Cable crushing position, 30...Plastic bag,
31...Insulating oil, 32...Lead cap, 40...
Rectangular metal frame, 40-1, 40-2...Short piece, 41
...Tightening bolt, 42...Hydraulic jack, 43,
44... Crushing metal fitting, A... Failure point, B... Planned cutting point.
Claims (1)
故障点を水中切断して船上にて修理する方法にお
いて、上記OFケーブルの水中切断予定点の両側
をケーブル圧潰装置を用いて水中にて圧潰してか
ら水中切断し、直ちに該切断口を絶縁油と金属キ
ヤツプとが収納されたプラスチツクの袋の中に挿
入し、該袋の中の絶縁油中で上記切断口に上記金
属キヤツプを冠着して密封し、両切断端部を船上
に引揚げて修理することを特徴とする海底OFケ
ーブルの故障修理方法。 ２ 組立分解が可能な矩形状金枠の上側短片の下
面に油圧ジヤツキが垂設され、該油圧ジヤツキの
下部と金枠の下側の短片とに固着された円柱状の
圧潰金具が平行に固設されてなるケーブル圧潰装
置。[Claims] 1. A method of cutting a faulty point in a submarine OF cable laid on the seabed underwater and repairing it on board a ship, in which both sides of the planned underwater cutting point of the OF cable are submerged underwater using a cable crushing device. After crushing and cutting underwater, immediately insert the cut end into a plastic bag containing insulating oil and a metal cap, and insert the metal cap into the cut end in the insulating oil in the bag. A method for repairing submarine OF cable failures, which is characterized by capping and sealing and lifting both cut ends onto a ship for repair. 2 A hydraulic jack is vertically installed on the lower surface of the upper short piece of the rectangular metal frame that can be assembled and disassembled, and a cylindrical crushing metal fitting fixed to the lower part of the hydraulic jack and the lower short piece of the metal frame is fixed in parallel. A cable crushing device is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19175386A JPS6352618A (en) | 1986-08-18 | 1986-08-18 | Restoration of failure of submarine of cable and cable crusher for the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19175386A JPS6352618A (en) | 1986-08-18 | 1986-08-18 | Restoration of failure of submarine of cable and cable crusher for the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6352618A JPS6352618A (en) | 1988-03-05 |
| JPH039697B2 true JPH039697B2 (en) | 1991-02-12 |
Family
ID=16279930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19175386A Granted JPS6352618A (en) | 1986-08-18 | 1986-08-18 | Restoration of failure of submarine of cable and cable crusher for the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6352618A (en) |
-
1986
- 1986-08-18 JP JP19175386A patent/JPS6352618A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6352618A (en) | 1988-03-05 |
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