JPH01273008A - Method of anchoring submarine cable in seaside manhole - Google Patents
Method of anchoring submarine cable in seaside manholeInfo
- Publication number
- JPH01273008A JPH01273008A JP10522588A JP10522588A JPH01273008A JP H01273008 A JPH01273008 A JP H01273008A JP 10522588 A JP10522588 A JP 10522588A JP 10522588 A JP10522588 A JP 10522588A JP H01273008 A JPH01273008 A JP H01273008A
- Authority
- JP
- Japan
- Prior art keywords
- cable
- submarine cable
- manhole
- anchoring
- casing
- 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
- 238000004873 anchoring Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000014759 maintenance of location Effects 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 18
- 229910052742 iron Inorganic materials 0.000 abstract description 9
- 239000013307 optical fiber Substances 0.000 abstract description 4
- 125000006850 spacer group Chemical group 0.000 abstract description 3
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は海浜マンホール内海底ケーブル引留方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for anchoring a submarine cable in a manhole on a beach.
従来の光海底ケーブル用の海浜マンホール内海底ケーブ
ル引留方法は、第3図(a)及び(b)に示すように、
ケーブル導入タクト1内を通しマンホール内へ引込まれ
た海底ケーブル2の外装鉄線4を束縛線5の巻付は箇所
で外方に折曲げ放射状に広けな上で、固定金具6と半割
りの固定金具7及び7′とで挟持し、マンホール壁3に
取付は固定する方法である。The conventional submarine cable anchoring method in a beach manhole for optical submarine cables is as shown in Figures 3 (a) and (b).
The outer iron wire 4 of the submarine cable 2, which has been drawn into the manhole through the inside of the cable introduction tact 1, is wrapped around the binding wire 5 by bending it outward at certain points so as not to widen it radially, and then attaching it to the fixing bracket 6 in half. This method is to clamp it between fixing fittings 7 and 7' and fix it to the manhole wall 3.
固定金具6,7及び7′のマンホール壁3への固定は、
スペーサ10を介在させ、埋め込みボルト8とナツトつ
とより行なう。海底ケーブル2のマンホール内に導入さ
れた部分は、抗張力線で保護された光ファイバであり、
接続用きょう体11内で陸上ケーブルに接続される。To fix the fixing fittings 6, 7 and 7' to the manhole wall 3,
This is done by interposing the spacer 10 and using the embedded bolt 8 and nut. The part of the submarine cable 2 introduced into the manhole is an optical fiber protected by a tensile strength wire.
It is connected to the land cable within the connection housing 11.
上述した従来の海浜マンボール内海底ケーブル引留方法
では、陸上ケーブルとの接続を海底クーフル引留後に実
施するので、これらの一連の作業のあと陸上端局とケー
ブル敷設線との間で確認テストを終了するまで10〜1
2時間を要し、ケーブル敷設線はその間洋上で待機せね
ばならす、不経済である。また、海底ケーブルは外装鉄
線のみて引留められており、敷設後に船舶のアンカー等
で引掛けられて海底ケーブルがひきすられた場合、外装
鉄線か伸びて、これに伴ない海底ケーブル内の光ファイ
バに伸びが発生し、電気的及び機械的な性能劣化を生じ
る恐れが多い。In the above-mentioned conventional submarine cable mooring method in a manhole on the beach, the connection with the land cable is carried out after the submarine cable is moored, so after this series of operations, a confirmation test is completed between the land terminal station and the cable laying line. 10-1 until
It takes two hours, and the cable laying line has to wait at sea during that time, which is uneconomical. In addition, submarine cables are held in place only by the armored wire, and if the submarine cable is pulled by a ship's anchor after being laid, the armored wire will stretch and the light inside the submarine cable will be affected. Elongation occurs in the fiber, which often causes electrical and mechanical performance deterioration.
本発明の海底ケーブル引留方法は、海底ケーブル内の抗
張力線の端部を固定する構造をもつ抗張力線引留部とこ
れに連結した設けた前記海底ケーブル及び陸上ケーブル
の相互接続用のきょう体とを装着した前記海底ケーブル
の端部を海浜のマンホール内に導いて、前記きょう体の
外周に設けてある湯に半割りの固定金具をはめ込んで該
固定金具を前記マンホールの内壁に取付は固定する工程
を有する。The submarine cable anchoring method of the present invention includes a tensile strength wire anchoring section having a structure for fixing the end of the tensile strength wire in the submarine cable, and a housing for interconnecting the submarine cable and the land cable connected thereto. The step of guiding the attached end of the submarine cable into a manhole on the beach, fitting a half-split fixing fitting into hot water provided on the outer periphery of the housing body, and attaching and fixing the fixing fitting to the inner wall of the manhole. has.
次に本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第1図(a)及び(b)は本発明の第1の実施例の縦断
面図及び正面図である。本実施例では、抗張力線引留部
14及び接続用きょう体11を海底ケーブル2の先端に
予め取付けた状態でケーブル陸揚を実施する。すなわち
、海底ケーブル2の外装鉄線4以外の部分は、ます抗張
力線引留部14内で抗張力線を挟持させ固定しく例えば
、特開昭6C1−249105号1の図2の構造による
)、これに連結した接続用きょう体11内に光ファイバ
を導いておく。外装鉄線4は、海底ケーブル2及び接続
用きょう体11に束縛線5で固定しておく。接続用きょ
う休11には、半割りの固定金具13及び13′の半円
状の切欠きをはめ込むための溝12が設けてある。この
構造の引留め時には、外装鉄線4の先端部を放射状に広
けな上で、固定金具6と固定金具13及び13′との間
に挟持し、且つ固定金具13及び13′を接続きょう体
11の溝12にはめ込み、スペーサ1oを介在さえて、
埋め込みポル1〜8とナツト9とで締め付け、マンホー
ル壁3に固定する。FIGS. 1(a) and 1(b) are a longitudinal sectional view and a front view of a first embodiment of the present invention. In this embodiment, cable landing is carried out with the tensile strength line anchoring section 14 and the connection housing 11 attached to the tip of the submarine cable 2 in advance. That is, the parts of the submarine cable 2 other than the armored iron wire 4 are fixed by clamping the tensile strength wire within the tensile strength wire retaining part 14 (for example, according to the structure shown in FIG. 2 of JP-A No. 6C1-249105 1), and connected thereto. The optical fiber is guided into the connecting housing 11. The armored iron wire 4 is fixed to the submarine cable 2 and the connection housing 11 with binding wires 5. The connecting plate 11 is provided with a groove 12 into which the semicircular notches of the half-split fixtures 13 and 13' are fitted. When fastening this structure, the tip of the armored iron wire 4 is held between the fixing fittings 6 and the fixing fittings 13 and 13' without being spread radially, and the fixing fittings 13 and 13' are connected to the connecting housing. 11 into the groove 12, with the spacer 1o interposed,
Tighten the embedded poles 1 to 8 and nuts 9 and fix it to the manhole wall 3.
第2図(a)及び(b)は本発明の第2の実施例の縦断
面図及び正面図である。本実施例は、海底ケーブル2の
外装鉄線も抗張力線と共に抗張力線引留部15内て引留
めた構造(例えば、特開昭60−176005号の図4
の構造)を使用している。外装鉄線をマンホール壁3の
方に固定するWI造は不要なので、接続きょう体11の
渦12にはめ込んノ3半割りの固定金具13及び13′
を直接マンホール壁3に、埋め込みホルト8とナツトつ
とで取付けて固定しである。FIGS. 2(a) and 2(b) are a longitudinal sectional view and a front view of a second embodiment of the present invention. This embodiment has a structure in which the armored iron wire of the submarine cable 2 is also held together with the tensile strength wire in the tensile strength wire retaining part 15 (for example, as shown in FIG.
structure) is used. Since the WI structure for fixing the exterior iron wire to the manhole wall 3 is not required, the fixing metal fittings 13 and 13', which are split in half and fit into the vortex 12 of the connection housing 11, are used.
is directly attached and fixed to the manhole wall 3 with an embedded bolt 8 and a nut.
以上説明したように本発明は、海底ケーブルと接続用き
ょう体との間に抗張力線引留部を介設した構造にしてこ
れを予め海底ケーブルに装着しておくことにより、陸揚
げ作業での接続時間すなわらケーブル敷設船の洋上待機
時間を縮少できると共に、海側からの張力を抗張力線で
負担して光ファイバの伸びを防けるという効果がある。As explained above, the present invention has a structure in which a tensile strength wire anchoring part is interposed between the submarine cable and the connection housing, and by attaching this to the submarine cable in advance, the connection time during landing work is reduced. In other words, it is possible to reduce the waiting time at sea for a cable-laying ship, and it is also effective in preventing the optical fiber from elongating by bearing the tension from the sea side with the tensile strength wire.
第1図(a)、第2図(a)はおのおの本発明の実施例
の縦断面図、第1図(b)、第2図(b)はおのおの本
発明の実施例の正面図、第3図(a)及び(b)は従来
のマンホール内海底ケーブル引留方法を説明するための
縦断面図及び正面図である。
1・・・ケーブル導入ダクト、2・・・海底ケーブル、
3・・・マンホール壁、4・・・外装鉄線、5・・・束
縛線、6.7.7’ 、13.13’・・・固定金具、
8・・・埋め込みボルト、9・・・ナツト、1o・・・
スペ一方、11・・・接続用きょう体、12・・・溝、
14.15・・・抗張力線引留部。FIGS. 1(a) and 2(a) are longitudinal sectional views of the embodiments of the present invention, and FIGS. 1(b) and 2(b) are front views and FIGS. FIGS. 3(a) and 3(b) are a longitudinal cross-sectional view and a front view for explaining a conventional submarine cable anchoring method in a manhole. 1... Cable introduction duct, 2... Submarine cable,
3... Manhole wall, 4... Exterior iron wire, 5... Binding wire, 6.7.7', 13.13'... Fixing metal fittings,
8...embedded bolt, 9...nut, 1o...
On the other hand, 11... Connection housing, 12... Groove,
14.15... Tensile strength wire anchorage part.
Claims (1)
抗張力線引留部とこれに連結した設けた前記海底ケーブ
ル及び陸上ケーブルの相互接続用のきよう体とを装着し
た前記海底ケーブルの端部を海浜のマンホール内に導い
て、前記きょう体の外周に設けてある溝に半割りの固定
金具をはめ込んで該固定金具を前記マンホールの内壁に
取付け固定する工程を有することを特徴とする海浜マン
ホール内海底ケーブル引留方法。An end portion of the submarine cable equipped with a tensile strength wire anchoring portion having a structure for fixing the end portion of the tensile strength wire within the submarine cable, and a shield body for interconnecting the submarine cable and land cable connected thereto. A beach manhole characterized by the step of guiding the body into a manhole on the beach, fitting a half-split fixing fitting into a groove provided on the outer periphery of the body, and attaching and fixing the fixing fitting to the inner wall of the manhole. Inland submarine cable retention method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10522588A JPH01273008A (en) | 1988-04-26 | 1988-04-26 | Method of anchoring submarine cable in seaside manhole |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10522588A JPH01273008A (en) | 1988-04-26 | 1988-04-26 | Method of anchoring submarine cable in seaside manhole |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01273008A true JPH01273008A (en) | 1989-10-31 |
Family
ID=14401723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10522588A Pending JPH01273008A (en) | 1988-04-26 | 1988-04-26 | Method of anchoring submarine cable in seaside manhole |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01273008A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0461428U (en) * | 1990-09-27 | 1992-05-26 | ||
CN102361266A (en) * | 2011-09-07 | 2012-02-22 | 宁波海缆研究院工程有限公司 | Device special for laying underwater cable |
CN109869444A (en) * | 2019-03-06 | 2019-06-11 | 中国科学院声学研究所 | It is a kind of for connecting the device of load-bearing tapered sleeve Yu wire armoring load-bearing cable |
-
1988
- 1988-04-26 JP JP10522588A patent/JPH01273008A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0461428U (en) * | 1990-09-27 | 1992-05-26 | ||
JPH0722993Y2 (en) * | 1990-09-27 | 1995-05-24 | 誠新産業株式会社 | Underground cable wiring structure |
CN102361266A (en) * | 2011-09-07 | 2012-02-22 | 宁波海缆研究院工程有限公司 | Device special for laying underwater cable |
CN109869444A (en) * | 2019-03-06 | 2019-06-11 | 中国科学院声学研究所 | It is a kind of for connecting the device of load-bearing tapered sleeve Yu wire armoring load-bearing cable |
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