JPS583509A - Method of laying and burying submarine cable by conduit - Google Patents
Method of laying and burying submarine cable by conduitInfo
- Publication number
- JPS583509A JPS583509A JP56101972A JP10197281A JPS583509A JP S583509 A JPS583509 A JP S583509A JP 56101972 A JP56101972 A JP 56101972A JP 10197281 A JP10197281 A JP 10197281A JP S583509 A JPS583509 A JP S583509A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- laying
- conduits
- conduit
- burying
- 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.)
- Pending
Links
Landscapes
- 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】
この発明は、海底ケーブルや送水管等を海底に布設した
シ置設するための方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for installing submarine cables, water pipes, etc. on the seabed.
従来から海底ケーブルを[EK布設して埋設するには、
菖1図に示すように1海底にある埋設機lと布設作業船
2t一つなぐ曳きワイヤ8に1114管4とよにれる環
状の金具を多数並べて取付け、各曽導管4の中にクープ
ルAを流し、智導管4を介して曳きワイヤ8でケーブル
At支持し、ケーブルAの水深による自重での自由落下
を防止しなから、埋設機1が前進した長さだけケーブル
Aを響41w4の中を通して布設して行く方法が知られ
ている。Traditionally, submarine cables have been installed using EK and buried.
As shown in Figure 1, a large number of ring-shaped metal fittings called 1114 pipes 4 are lined up and attached to the towing wire 8 that connects the burial machine 1 on the seabed and the laying work boat 2t, and a couple A is installed in each of the conduit pipes 4. Then, the cable A is supported by the towing wire 8 through the pipe 4, and the cable A is passed through the Hibiki 41w4 by the length that the burial machine 1 moves forward, while preventing the cable A from falling freely due to its own weight due to the water depth. A known method is to install and proceed.
この方法は、クープルの自由落下がない丸め、ブレーキ
コントロール等の難しい操作が不要であ)、非常に有効
なケーブル繰)出し手段として造信および電力無底ケー
ブルの布設に広く活用されている。This method does not require any free-falling of the couple, does not require difficult operations such as brake control, etc., and is widely used as a very effective cable feeding method for signal production and the installation of bottomless power cables.
しかし最近の電源立地その他の関係で一同!li1当シ
の送電谷蓋が大きくな9、しかも布設範囲が限定された
場合や超大製海底ケーブルを三条同時に布設埋設する場
合、書導管4で支持されるケーブルAの1m当90重量
が大きくな〕、譬導管4の布設に適したカテナリー形状
を保つことができなくなり、ケーブルAの繰ル出しが行
なえないという新たな問題が生じている。However, due to recent power supply location and other issues, everyone! If the power transmission valley cover of li1 is large9, and the installation range is limited, or if three ultra-large submarine cables are laid and buried at the same time, the weight of cable A supported by conduit 4 will be large. ], a new problem arises in that it is no longer possible to maintain the catenary shape suitable for laying the conduit 4, and the cable A cannot be fed out.
例えば75縁/嵩のケーブル三条を響導管で支持する場
合、水tl 40 m fiM fが水中重量201を
有する埋設機1をけん引したとき、布設作業船2と埋t
&機10間に曳きワイヤ8、すなわち書導管4が作る布
設に適したカテナリー形状としては限度であり、それ以
上のケーブルNitあるいは水深になると、本はやその
カテナリー形状に適さなく、水面付近ではケーブルAが
垂直状に入ることになシ、w専管4のアライメント(配
列)がくずれ、クープルAの布設ができなくなる。For example, in the case of supporting three cables of 75 edges/bulk with a sound conduit, when water tl 40 m fiM f tows the burial machine 1 having an underwater weight of 201, the construction work vessel 2 and the burial machine 1
There is a limit to the catenary shape suitable for laying the tow wire 8, that is, the cable conduit 4, between the cables 10 and 10, and if the cable depth or water depth exceeds that, the catenary shape is no longer suitable for the cable, and the catenary shape is no longer suitable for installation near the water surface. If the cable A were not inserted vertically, the alignment of the w-special pipe 4 would be disrupted, making it impossible to lay the couple A.
すなわち、I#14管4のカテナリー形状は、ケーブル
1董と水深および埋設機1の抵抗で決まるものであル、
第1図に破−で示すように、布設作業船2から一般機I
tでカテナリー形状が略直線状−である角度を保ってい
る間は、ケーブルAはスムースに埋設機lへ繰出される
。In other words, the catenary shape of the I#14 pipe 4 is determined by the length of the cable 1, the water depth, and the resistance of the burial machine 1.
As shown by the broken line in Figure 1, from the laying work vessel 2 to the general machine I.
While the catenary shape maintains a substantially linear angle at t, the cable A is smoothly fed out to the burial machine L.
ところが、ケーブル重量X水深の積が大きくなると堀設
機lの抵抗だけでは布設に適したカテナリー形状を保持
できず、布設作業船2の移動を止めてもケーブル重量だ
けで埋設機lが前方に引張られ、第1図実線で示すよう
に、埋設機lが布設作業船2に近つき、響導管4のカテ
ナリー形状は、上部に垂直部分4aと下部に水平部分4
bが生じたものとなる。However, when the product of cable weight x water depth becomes large, the resistance of the digging machine 1 alone cannot maintain the catenary shape suitable for laying, and even if the cable laying work vessel 2 stops moving, the cable weight alone causes the burying machine 1 to move forward. As shown by the solid line in FIG. 1, the burying machine 1 approaches the laying work vessel 2, and the catenary shape of the sound conduit 4 has a vertical portion 4a at the top and a horizontal portion 4 at the bottom.
b has occurred.
上記垂直部分4aにおいては、第1図に示すように、曳
きワイヤ8と曽導管4のアライメントがくずれ、III
!尋管4炉管4にねじれ、ケーブルAの繰出しが不能に
なる。In the vertical portion 4a, as shown in FIG.
! The tube 4 is twisted in the furnace tube 4, making it impossible to feed out the cable A.
また、水平部分4bにおいては、ケーブルAがスムース
に清らなくなり、前記垂直部分4aとによってケーブル
Aの布設が不可能になるという問題がある。In addition, there is a problem that the cable A cannot be cleaned smoothly in the horizontal portion 4b, and it becomes impossible to lay the cable A due to the vertical portion 4a.
この発明は、上記のような問題を解消するためになされ
たものであシ、重量の大きなり−プルや送水管を水深の
深い個所に布設することができる方法を提供することを
目的とする。This invention was made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method that can install heavy pulls and water pipes in deep water locations. .
この発明の構成は、響導管を取付けた曳きワイヤの途中
を布設作業船上から懸垂支持し、畳導管の布設に過した
カテナリー形状を保つようにし九ものである。The structure of the present invention is such that the towing wire to which the sound conduit is attached is suspended midway from a construction work boat to maintain the catenary shape used for laying the tatami conduit.
以下、この発明′t−第2図に示す実施例にもとづいて
阪明する。The present invention will now be explained based on the embodiment shown in FIG.
図示のように、堀設機1に接続した曳きワイヤ8は布設
作業船2上のウィンチ5にシーブ6を介して壱取られ、
作業船2によって埋設−1を前進させることがで迫るよ
うに、ケーブルAをコイル巻きしたケーブルコイル7が
載荷されている。前記曳きワイヤ8に多数の41尋管4
が一列に並ぶ配列で叡付けられ、ケーブルコイルからガ
イド装置8會介して引出されたクープルAti、上記譬
導管4内を雇って堀設4&1に尋かれ、該堀設機lが前
走し九長さだけ順次繰出されて海鼠に埋設される。As shown in the figure, the tow wire 8 connected to the excavation machine 1 is taken by a winch 5 on the construction work boat 2 via a sheave 6,
A cable coil 7 made by winding the cable A into a coil is loaded so that the work boat 2 can move the burial site 1 forward. A large number of 41 fathom tubes 4 are connected to the pulling wire 8.
The couple Ati, arranged in a line and drawn out from the cable coil through the guide device 8, is guided through the analogous conduit 4 to the excavator 4 & 1, and the excavator 1 runs in front of the excavator 9. The lengths are drawn out one after another and buried in the sea rat.
上記I#I4管4の布設に適したカテナリー形状が、ケ
ーブルAの゛に量でくずれるのを防止するため、曳きワ
イヤ8の中間を2〜8個所を吊9ワイヤ9によって作業
船2上からmh支持している。In order to prevent the catenary shape suitable for laying the above-mentioned I#I4 pipe 4 from collapsing due to the amount of cable A, the middle of the towing wire 8 is suspended from 2 to 8 points from above the work boat 2 using a wire 9. I support mh.
各吊9ワイヤ90作業船2への城付けは、図示の一合作
東船2上に一部が船外へ突出するように設けた□ヤグラ
IQを使用したが、海上に突き出る他の支持栴:#Lt
採用してもよい。To attach each suspension 9 wires 90 to the work boat 2, we used a Yagura IQ installed on the East Ship 2 as shown in the figure so that a part of it protruded out of the ship, but other supporting ditches protruding into the sea were used. :#Lt
May be adopted.
このように、曽4’1ir4t−介してケーブルAの重
量を支持している曳きワイヤ3の途中を吊りワイヤ9に
よって作業船2上から懸垂支持す゛ると、ケーブルAの
重量は吊シワイヤ9で支持されることになり、ケーブル
重量の一部が曳きワイヤ3にかかつて埋設機1がケーブ
ル重量で前進動するようなことがなく、I#導管4の布
設に適しだカテナリー形状を第2図のように常時保持で
き、従って重量の大きなケーブルAであっても布設する
ことができ1゜
以上のように、この発明によると響導管°を介してケー
ブルを支持している曳きワイヤの途中を吊)ワイヤで懸
垂支持するようにしたので、ケーブル重量の一部を吊り
ワイヤで支持することができ、響導管の布設に適したカ
テナリー形状を常時保持し、重量の大きいケーブルを水
深の深い個所、例えば75Kg/mのケーブル三条を水
深40m 以上でも布設することができるようになる
と云う効果がある。In this way, when the tow wire 3 that supports the weight of the cable A is suspended from the work boat 2 by the hanging wire 9, the weight of the cable A is supported by the hanging shear wire 9. Since part of the weight of the cable will be transferred to the tow wire 3 and the burial machine 1 will not move forward due to the weight of the cable, the catenary shape suitable for laying the I# conduit 4 is designed as shown in Fig. 2. Therefore, even a heavy cable A can be laid.According to the present invention, even a heavy cable A can be laid. ) Since the cable is suspended by a wire, part of the weight of the cable can be supported by the hanging wire, and the catenary shape suitable for installing acoustic conduits is always maintained, making it possible to carry heavy cables in deep water. For example, it is possible to lay three cables of 75 kg/m at a depth of 40 m or more.
第1図は従来の埋設方法を示す説明図、第2図はこの発
明に係る埋設方法の説明図である。
1・・・埋設機 2・・・作業船 8・・・曳きワ
イヤ4・・・書4管 9・・・吊シワイヤ 10・・
・ヤグラA・・・ケーブル
第1図
第2図FIG. 1 is an explanatory diagram showing a conventional burying method, and FIG. 2 is an explanatory diagram of a burying method according to the present invention. 1... Burying machine 2... Work boat 8... Towing wire 4... Four pipes 9... Hanging shear wire 10...
・Yagura A...Cable Figure 1 Figure 2
Claims (1)
、ケーブルや送水管等を譬導管内に沿って布設作業船か
らS底Km導しつつ布設あるいは埋設する作業時、曳き
ワイヤの途中tm*支持し、IIII導管の誘導に適し
た)テナリー形状を保ちつつ作業を行なうことを特徴と
する畳導管による海底ケーブル等の布設、埋設方法。When installing or burying cables, water pipes, etc. along the inside of the conduits along the inside of the conduits for S-bottom Km from the installation work boat, attach the tatami conduits of rhombus-sized tatami conduits to the tow wires in a nine-way arrangement. A method for laying and burying submarine cables, etc. using tatami conduits, which is characterized in that the work is carried out while maintaining the tenary shape (which supports tm* and is suitable for guiding III conduits).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56101972A JPS583509A (en) | 1981-06-29 | 1981-06-29 | Method of laying and burying submarine cable by conduit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56101972A JPS583509A (en) | 1981-06-29 | 1981-06-29 | Method of laying and burying submarine cable by conduit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS583509A true JPS583509A (en) | 1983-01-10 |
Family
ID=14314774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56101972A Pending JPS583509A (en) | 1981-06-29 | 1981-06-29 | Method of laying and burying submarine cable by conduit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS583509A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50124391A (en) * | 1974-03-18 | 1975-09-30 | ||
JPS5545797A (en) * | 1978-09-27 | 1980-03-31 | Ici Ltd | Coating composition and method of forming hardened coating thereby |
-
1981
- 1981-06-29 JP JP56101972A patent/JPS583509A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50124391A (en) * | 1974-03-18 | 1975-09-30 | ||
JPS5545797A (en) * | 1978-09-27 | 1980-03-31 | Ici Ltd | Coating composition and method of forming hardened coating thereby |
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