JPS61112515A - Method of laying protective pipe for submarine cable - Google Patents
Method of laying protective pipe for submarine cableInfo
- Publication number
- JPS61112515A JPS61112515A JP59232935A JP23293584A JPS61112515A JP S61112515 A JPS61112515 A JP S61112515A JP 59232935 A JP59232935 A JP 59232935A JP 23293584 A JP23293584 A JP 23293584A JP S61112515 A JPS61112515 A JP S61112515A
- Authority
- JP
- Japan
- Prior art keywords
- semi
- tubes
- protection
- laid
- protective
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Electric Cable Installation (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
(発明の技術分野)
本発明は、海底ケーブルの保護管の敷設方法に係り、二
箇所以上の複数の起点から上記保護管を順次敷設してい
った場合に、端部に位置する保護管と保護管の間に生じ
る不要な間隔の長短にかかわらず、該間隔を被って両保
護管を簡単にかつしっかりと連結できるようにした海底
ケーブルの敷設方法に関する。Detailed Description of the Invention (Technical Field of the Invention) The present invention relates to a method for laying protection pipes for submarine cables, and relates to a method for laying protection pipes for submarine cables. This invention relates to a method for laying a submarine cable in which both protective tubes can be simply and securely connected by covering the unnecessary gap, regardless of the length of the unnecessary gap that occurs between the protective tubes.
(発明の背景)
電信、電話などの通信信号を伝送する海底ケーブルは、
一般に保護管内に収納されてこれにより保護されている
。従来この種海底ケーブルの敷設手段として種々の方法
があるが、その一つとしてケーブルを海底に敷設した後
、該ケーブルに保護管を順次装着していく方法が広〈実
施されている。ところでかかる方法により海底ケーブル
を敷設するにあたっては、第7図(a)に示すように三
箇所以上の複数の起点A、 Bから保護管2の一端部に
形成された自在継手部21bを、他端部に形成された自
在継手部21aにより抱持させながらケーブルlに順次
装着していった方が作業能率が上がり、それだけ工期を
短縮できるものであるが、かかる方法によると一つの起
点Aから順次敷設された保護管2のうちの端部の保護管
2 (n)と、他の起点Bから順次敷設された保護管2
のうちの端部の保護管2 (1)の間に不要な間隔りが
生じがちであり、この部分だけケーブル1は露呈してケ
ーブル1の破壊の原因となる。したがってかかる間隔り
は何らかの手段によりなくさなければならないが、従来
そのための有効な手段がなかったため、かかる保護管2
は第7図(a)に示すように複数の起点A、Bからは敷
設されず、同図(b)に示すようにもっばら一つの起点
Aからのみ順に敷設されている実情にあり、このためこ
の種海底ケーブルの敷設にはきわめて長期の工期を必要
とする問題点があった。(Background of the invention) Submarine cables that transmit communication signals such as telegraph and telephone are
It is generally housed and protected within a protective tube. Conventionally, there are various methods for laying this type of submarine cable, and one of the widely used methods is to lay the cable on the seabed and then sequentially attach protective tubes to the cable. By the way, when laying a submarine cable by this method, as shown in FIG. It would be better to attach the cable l one by one while holding it by the universal joint 21a formed at the end, which would increase the work efficiency and shorten the construction period accordingly. The protection tube 2 (n) at the end of the protection tubes 2 laid one after another, and the protection tube 2 laid one after another from the other starting point B.
Unnecessary spacing tends to occur between the protective tubes 2(1) at the ends, and the cable 1 is exposed at this portion, which may cause damage to the cable 1. Therefore, such a gap must be eliminated by some means, but since there has been no effective means to do so, such protective tubes 2
As shown in Figure 7(a), the cables are not laid from multiple starting points A and B, but are laid in sequence from only one starting point A, as shown in Figure 7(b). Therefore, laying this type of submarine cable had the problem of requiring an extremely long construction period.
(発明の概要)
本発明は上記事情に鑑みてなされたものであって、本発
明の目的は海底ケーブルの保護管の敷設作業を三箇所以
上の複数の起点から有利に行えるようにした海底ケーブ
ルの敷設方法を提供することにある。このために本発明
は、海底に敷設されたケーブルを保護するために、その
両端部に自在継手部が形成された保護管を、複数の起点
からそれぞれ順次装着していくうえにおいて、一つの起
点か、ら順に敷設された各保護管のうちの端部の保護管
と、他の起点から順に敷設された各保護管のうちの端部
の保護管として、上記両端部に形成された自在継手部の
うちの一方の自在継手部を切除して成る生保護管を敷設
し、これらの両半保護管の間に生した間隔を被うために
、一対の鋳鉄製半管状体から成る継手体を上記両半保護
管の胴部にこれらの両半保護管を抱持するように装着し
、上記両半管状体の長さ方向に沿って形成されたつば部
に、該つば部の長さ方向に沿って形成された長孔と、上
記両半保護管の長さ方向に沿って形成されたつば部に形
成された挿着孔にボルトナツトを締着するようにしたも
のである。このように海底ケーブルの敷設方法を構成す
ることにより、第7図(a>に示すように三箇所以上の
複数の起点から保護管の敷設作業を行った場合に、端部
に位置する保護管と保護管の間に生じがちな不要な間隔
をその長短にかかわらず上記一対の半管状体により簡単
にカバーできるようにし、かつこれらの両生保護管同士
をしっかりと連結できるようにしたものである。このよ
うに上記不要な間隔を簡単確実にカバーできるようにす
ることにより、保護管を複数の起点から敷設していくこ
とを可能とし、保護管敷設の工期を大巾に短縮できるよ
うにしたものである。さらには上記半管状体を重量のあ
る鋳鉄により形成してアンカー効果を確保し、潮流によ
り流されにくいものとしたものである。(Summary of the Invention) The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a submarine cable that enables the work of laying protection pipes for a submarine cable to be carried out advantageously from a plurality of starting points at three or more locations. The purpose of this invention is to provide a method for installing. Therefore, in order to protect cables laid on the seabed, the present invention provides protection tubes with universal joints formed at both ends of the cables, which are installed sequentially from a plurality of starting points. Universal joints formed at both ends of the protection tubes are used as protection tubes at the ends of the protection tubes laid in order from the starting point, and as protection tubes at the ends of the protection tubes laid in order from the other starting point. A joint body consisting of a pair of semi-tubular bodies made of cast iron is installed to cover the gap created between the semi-protective tubes by cutting out the universal joint section of one of the sections. is attached to the bodies of both semi-protective tubes so as to hold both semi-protective tubes, and a flange portion formed along the length of both semi-tubular bodies has a length corresponding to the length of the flange portion. A bolt nut is fastened to an elongated hole formed along the direction and an insertion hole formed in the flange portion formed along the length direction of both the semi-protective tubes. By configuring the submarine cable laying method in this way, when the protection pipe is laid from three or more starting points as shown in Figure 7 (a), the protection pipe located at the end can be This makes it possible to easily cover the unnecessary gap that tends to occur between the amphibious protective tube and the protective tube with the pair of semi-tubular bodies, regardless of its length, and to firmly connect these amphibious protective tubes to each other. By making it possible to easily and reliably cover the unnecessary gaps mentioned above, it is possible to lay protection pipes from multiple starting points, and the construction period for laying protection pipes can be greatly shortened. Furthermore, the semi-tubular body is made of heavy cast iron to ensure an anchor effect and to make it difficult to be washed away by tidal currents.
(実施例) 以下、図面を参照しながら本発明の詳細な説明を行う。(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.
第1図は本発明に係る海底ケーブルの接合部の分解斜視
図であって、1はケーブルであり、保護管2内に収納さ
れている。保護管2は一対の半管状体21.21から成
っており、両半管状体21.21はその長さ方向に沿っ
て形成されたつば部22の挿着孔24に、ボルトナツト
3を挿着して結合されている。21a、21bは半管状
体21.21の両端部に形成された自在継手部であって
、継手部21bは継手部21aにより抱持されている。FIG. 1 is an exploded perspective view of a joint part of a submarine cable according to the present invention, and 1 is a cable housed in a protection tube 2. FIG. The protective tube 2 consists of a pair of semi-tubular bodies 21.21, and the bolt nut 3 is inserted into the insertion hole 24 of the collar 22 formed along the length of both semi-tubular bodies 21.21. and are combined. 21a and 21b are universal joints formed at both ends of the semi-tubular body 21.21, and the joint 21b is held by the joint 21a.
かかる自在継手部21a、21bは、海底の地形等に応
じて保護管2を自由に屈折させるために形成されたもの
である。These universal joints 21a and 21b are formed to freely bend the protection tube 2 according to the topography of the seabed and the like.
4は継手体であって、同寸同形状の一対の半管状体41
.41から成っている。42.42は半管状体41の両
側部にその長さ方向に沿って形成されたつば部、43は
半管状体41の周胴面にその円周方向に突設された補強
用リブであり、等間隔にて計7個形成されている。44
は上記つば部42の両端部側の上記リブ43.43の間
に2個づつ合計8個形成されたボルトナツト3の挿着用
長孔であり、その長さ方向はっは部42の長さ方向と一
致している(以上第2図および第3図も併せて参照)。4 is a joint body, which is a pair of semi-tubular bodies 41 of the same size and shape.
.. It consists of 41. 42. 42 is a collar formed along the length direction on both sides of the semi-tubular body 41, and 43 is a reinforcing rib provided on the peripheral body surface of the semi-tubular body 41 in a circumferential direction. , a total of 7 are formed at equal intervals. 44
are elongated holes for inserting bolt nuts 3, two of which are formed between the ribs 43 and 43 on both end sides of the flange portion 42, for a total of eight slots, and the longitudinal direction of the bolt nut 3 is (See also Figures 2 and 3 above).
本継手体4は十分な強度と潮流に流されないアンカー効
果を確保するために、重量のある鋳鉄により形成されて
いる。また鋳鉄は海水によって錆びにくい特徴も有して
いる。This joint body 4 is made of heavy cast iron in order to ensure sufficient strength and an anchor effect that will not be washed away by the tide. Cast iron also has the characteristic of not being rusted by seawater.
第5図は上記保護管2を2分割した生保護管2x、2Y
を示すものであって、各生保護管2X、2Yは保護管2
を2分割して形成したことにより、その両端部の自在継
手部21a、21bのうちの一方の自在継手部21b、
21aがそれぞれ切除された形状となっており、その使
用方法の詳細は後述する。次に上記保護管2や生保護管
2X、2Y、継手体4を使用した海底ケーブルの敷設方
法を説明する。Figure 5 shows raw protection tubes 2x and 2Y, which are the protection tubes 2 divided into two.
, and each raw protection tube 2X, 2Y is the protection tube 2.
By dividing into two parts, one of the universal joint parts 21a and 21b at both ends, the universal joint part 21b,
21a are respectively cut out, and the details of how to use them will be described later. Next, a method of laying a submarine cable using the protection tube 2, raw protection tubes 2X, 2Y, and joint body 4 will be explained.
ケーブルlを海底に敷設した後、第7図(a)に示すよ
うに三箇所以上の複数の起点A、 Bから該ケーブル1
の保護管2を順次ケーブル1に装着していくが、上述し
たように端部の保護管と保護管の間に、不要な間隔が生
じるのは避けられない場合が多い。かかる場合は、両端
部には第1図および第6図に示すように一方の継手部2
1b、21aが切除された生保護管2X、2Yを敷設す
る。次に両半保護管2X、2Yの上下から、両半保護管
2X、2Yの胴部に両半保護管2X、2Yを抱持するよ
うに半管状体41.41を装着し、長孔44および挿着
孔24にボルトナツト3を挿着する(第4図参照)。After the cable 1 is laid on the seabed, the cable 1 is laid from three or more starting points A and B as shown in Figure 7(a).
The protective tubes 2 are sequentially attached to the cable 1, but as described above, it is often unavoidable that an unnecessary gap is created between the protective tubes at the ends. In such a case, one joint part 2 is attached to both ends as shown in FIGS. 1 and 6.
The life protection tubes 2X and 2Y from which 1b and 21a have been cut are laid. Next, from above and below both semi-protective tubes 2X, 2Y, semi-tubular bodies 41, 41 are attached to the bodies of both semi-protective tubes 2X, 2Y so as to hold both semi-protective tubes 2X, 2Y. Then, insert the bolt/nut 3 into the insertion hole 24 (see FIG. 4).
半管状体41.41のボルトナツト3の挿着孔は上記の
ように長孔44となっており、したがって上記間隔りの
長短にかかわらず、各長孔44は各生保護管2X、2Y
の挿着孔24に合致させてボルトナツト5をしっかりと
挿着することができる。The insertion holes for the bolt nuts 3 in the semi-tubular bodies 41, 41 are elongated holes 44 as described above, and therefore, regardless of the length of the above-mentioned spacing, each elongated hole 44 is inserted into each of the protective tubes 2X, 2Y.
The bolt/nut 5 can be securely inserted by aligning with the insertion hole 24 of the bolt.
(発明の効果)
以上説明したように本発明に係る方法によれば、ケーブ
ル1を海底に敷設した後、保護管2を三箇所以上の複数
の起点から敷設していった場合に生じがちな保護管と保
護管の間の不要な間隔りを、その長短にかかわらず半管
状体41.41から成る継手体4により簡単かつ確実に
被い、かつ生保護管2X、2Y同士をしっかりと連結で
きるものであり、したがって保護管2を複数の起点から
敷設していくことが可能であるから、それだけ工期を大
巾に短縮できる。さらには半管状体41.41を重量の
ある鋳鉄製とすることにより十分なアンカー効果を確保
し、潮流により流動しにくいものとすることができる。(Effects of the Invention) As explained above, according to the method according to the present invention, after the cable 1 is laid on the seabed, the protective tube 2 is laid from three or more starting points. The unnecessary gap between the protective tubes is easily and reliably covered by the joint body 4 consisting of semi-tubular bodies 41 and 41 regardless of their length, and the raw protective tubes 2X and 2Y are firmly connected to each other. Therefore, since it is possible to lay the protective tube 2 from a plurality of starting points, the construction period can be shortened to a large extent. Furthermore, by making the semi-tubular bodies 41, 41 made of heavy cast iron, a sufficient anchoring effect can be ensured, and the semi-tubular bodies 41, 41 can be made difficult to flow due to tidal currents.
図は本発明の実施例を示すものであって、第1図は海底
ケーブルの分解斜視図、第2図は半管状体の平面図、第
3図は断面図、第4図は結合状態での側面図、第5図は
生保護管の斜視図、第6図は施工中の側面図、第7図(
a)、(b)は施工方法の説明図である。
l・・・ケーブル 2.2・・・保護管2X、2Y・
・・生保護管
21a、21b・・・自在継手部
22・・・つば部 24・・・挿着孔3・・・ボルト
ナツト 4・・・継手体41・・・半管状体 42
・・・つば部44・・・長孔 L・・・間隔
A、B・・・起点The drawings show an embodiment of the present invention, in which Fig. 1 is an exploded perspective view of a submarine cable, Fig. 2 is a plan view of a semi-tubular body, Fig. 3 is a sectional view, and Fig. 4 is a coupled state. Fig. 5 is a perspective view of the raw protection tube, Fig. 6 is a side view during construction, Fig. 7 (
a) and (b) are explanatory diagrams of the construction method. l...Cable 2.2...Protection tube 2X, 2Y/
... Live protection tubes 21a, 21b... Universal joint portion 22... Flange portion 24... Insertion hole 3... Bolt nut 4... Joint body 41... Semi-tubular body 42
...Brim portion 44...Long hole L...Interval A, B...Starting point
Claims (1)
部21a、21bが形成された保護管2を、複数の起点
A、Bからそれぞれ順次装着していく海底ケーブルの敷
設方法において、一つの起点Aから順に敷設された上記
各保護管2のうちの端部の保護管と、他の起点Bから順
に敷設された上記各保護管2のうちの端部の保護管とし
て、上記両端部に形成された自在継手部21a、21b
のうちの一方の自在継手部21b、21aを切除して成
る半保護管2X、2Yを敷設し、これらの両半保護管2
X、2Yの間に生じた間隔Lを被うために、一対の鋳鉄
製半管状体41、41から成る継手体4を上記両半保護
管2X、2Yの胴部にこれらの両半保護管2X、2Yを
抱持するように装着し、上記両半管状体41、41の長
さ方向に沿って形成されたつば部42に、該つば部42
の長さ方向に沿って形成された長孔44と、上記両半保
護管2X、2Yの長さ方向に沿って形成されたつぼ部2
2に形成された挿着孔24にボルトナット3を締着する
ようにした海底ケーブルの保護管の敷設方法。In a method of laying a submarine cable, a protection tube 2 having universal joints 21a and 21b formed at both ends is sequentially attached to a cable 1 laid on the seabed from a plurality of starting points A and B. As a protection tube at the end of each of the protection tubes 2 laid in order from the starting point A, and as a protection tube at the end of each of the protection tubes 2 laid in order from the other starting point B, at both ends. Formed universal joint parts 21a, 21b
Semi-protective tubes 2X and 2Y formed by cutting out one of the universal joint portions 21b and 21a are laid, and both of these semi-protective tubes 2
In order to cover the gap L created between X and 2Y, a joint body 4 consisting of a pair of cast iron semi-tubular bodies 41, 41 is attached to the bodies of both semi-protective tubes 2X, 2Y. 2
a long hole 44 formed along the length direction, and a pot portion 2 formed along the length direction of both the semi-protective tubes 2X, 2Y.
2. A method of laying a protective tube for a submarine cable, in which bolts and nuts 3 are tightened in insertion holes 24 formed in 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59232935A JPS61112515A (en) | 1984-11-05 | 1984-11-05 | Method of laying protective pipe for submarine cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59232935A JPS61112515A (en) | 1984-11-05 | 1984-11-05 | Method of laying protective pipe for submarine cable |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61112515A true JPS61112515A (en) | 1986-05-30 |
JPS644404B2 JPS644404B2 (en) | 1989-01-25 |
Family
ID=16947153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59232935A Granted JPS61112515A (en) | 1984-11-05 | 1984-11-05 | Method of laying protective pipe for submarine cable |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61112515A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008245341A (en) * | 2007-03-23 | 2008-10-09 | Chugoku Electric Power Co Inc:The | Cable protective tube, and protective tube connecting member |
WO2014118974A1 (en) * | 2013-02-01 | 2014-08-07 | 中国電力株式会社 | Pipe-reinforcing implement |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009092139A (en) * | 2007-10-09 | 2009-04-30 | Mirai Ind Co Ltd | Connection method of fluid pipe, protection structure of fluid pipe and connector |
-
1984
- 1984-11-05 JP JP59232935A patent/JPS61112515A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008245341A (en) * | 2007-03-23 | 2008-10-09 | Chugoku Electric Power Co Inc:The | Cable protective tube, and protective tube connecting member |
WO2014118974A1 (en) * | 2013-02-01 | 2014-08-07 | 中国電力株式会社 | Pipe-reinforcing implement |
Also Published As
Publication number | Publication date |
---|---|
JPS644404B2 (en) | 1989-01-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH0258725B2 (en) | ||
US4109097A (en) | Expansion-deflection coupling | |
JP2024032801A (en) | Connecting structure of piping and connecting method of the same | |
JPS61112515A (en) | Method of laying protective pipe for submarine cable | |
CN102361279A (en) | Wiring harness protecting device | |
GB1587532A (en) | Cable securing device | |
CN220382390U (en) | Bending protection device for cable connection part and underwater equipment | |
JP4942529B2 (en) | Cable protection tube and protection tube connector | |
JPH0691691B2 (en) | How to protect the rising part of the direct buried cable | |
JP2912890B2 (en) | Protective plate for underground objects | |
JP2002303380A (en) | Underground buried conduit | |
CN213990023U (en) | Line protection device for communication engineering | |
CN217063159U (en) | PE power cable protection pipe | |
JPH0747944Y2 (en) | Inner-outer induction structure of large-diameter cable on steel tube pole | |
CN213027281U (en) | MPP electric power pipe with heat preservation and insulation | |
JPS61135308A (en) | Installation of submarine cable | |
KR102053210B1 (en) | Multi-Cable Connection clamp | |
JP3182336B2 (en) | Connection unit for perforated pipeline | |
KR200205746Y1 (en) | Assembling water-proof connection tube for manhole | |
JPS5810070Y2 (en) | Protection tube for long submarine bodies | |
JP2876347B2 (en) | Duct sleeve for manhole extension | |
JP2997734B2 (en) | Seismic joint structure of pipeline block for underground wiring | |
JPS6146486Y2 (en) | ||
JP3055859U (en) | Connection trough to underground handhole for wiring | |
JPH1014071A (en) | Conduit block for underground wiring and connecting structure thereof |