JPH02203302A - Method for laying optical cable - Google Patents
Method for laying optical cableInfo
- Publication number
- JPH02203302A JPH02203302A JP1024656A JP2465689A JPH02203302A JP H02203302 A JPH02203302 A JP H02203302A JP 1024656 A JP1024656 A JP 1024656A JP 2465689 A JP2465689 A JP 2465689A JP H02203302 A JPH02203302 A JP H02203302A
- Authority
- JP
- Japan
- Prior art keywords
- optical cable
- sewer pipe
- lead plates
- cable
- inside wall
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000001681 protective effect Effects 0.000 claims abstract description 13
- 239000000853 adhesive Substances 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000010865 sewage Substances 0.000 abstract description 15
- 239000000428 dust Substances 0.000 abstract description 3
- 238000005452 bending Methods 0.000 abstract 1
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
- G02B6/508—Fixation devices in ducts for drawing cables
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Electric Cable Installation (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ヒエーム管からなる下水管中に光フアイバケ
ーブルを配設するための光ケーブル布設工法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical cable installation method for installing an optical fiber cable in a sewer pipe made of a Hiem pipe.
光ケーブルを都市圏に布設する場合、一般に地下または
地上にケーブル管路を配設し、その管内にケーブルを引
入れる布設工法が採られている。When optical cables are laid in urban areas, a construction method is generally used in which a cable conduit is laid underground or above ground, and the cable is drawn into the conduit.
地下ケーブルの場合を例にとると、設定した管路区間に
応じてマンホールを設け、マンホールを結ぶ区間に管路
を埋設する。そして、ケーブル牽引手段により各ケーブ
ルピースを管路内に引入れている。このような光ケーブ
ルの布設工法では、線路を新設する場合、ケーブル管路
の配役に多大の労力と経費を費やさなければならない問
題がある。Taking the case of underground cables as an example, manholes are provided according to the set conduit sections, and the conduit is buried in the sections connecting the manholes. Each cable piece is then pulled into the conduit by the cable pulling means. Such an optical cable installation method has a problem in that when a new line is installed, a large amount of labor and expense must be spent on arranging the cable conduit.
また、都市圏の地下には上・下水道、ガス、電話等の管
路や各種の施設が複雑に存在することから、ケーブル管
路を新たに配設することが著しく困難な状況にある。こ
のような状況から、下水管等の既設管路の中に光ケーブ
ルを配設し、既設管路を光ケーブル管路として兼用する
ことにより、ケーブル管路を新たに配設することなく光
ケーブルを布設することが試みられている。In addition, underground in urban areas, water, sewage, gas, telephone, and other conduits and various facilities exist in a complex manner, making it extremely difficult to install new cable conduits. Under these circumstances, it is possible to install optical cables without installing new cable conduits by installing optical cables inside existing conduits such as sewage pipes and using the existing conduits as optical cable conduits. That is what is being attempted.
上記下水管の中に光ケーブルを配設する方法としては、
下水管の上部開口（例えばマンホール）を光ケーブルの
引入れ引出し部とし、管路内では光ケーブルを管路の長
さ方向に沿って底に沈めておくのが簡単な方法である。The method for installing optical cables inside the sewer pipes is as follows:
A simple method is to use the upper opening (for example, a manhole) of a sewer pipe as an inlet/outlet part for the optical cable, and to sink the optical cable to the bottom along the length of the pipe.
この場合、管路の底に沈められている光ケーブルは下水
の流れによる抵抗を殆ど受けないが、光ケーブルを下水
管上部の引入れ引出し部へ導くためには光ケーブルを屈
曲させ立上らせる必要があり、この屈曲部に下水自体の
流動による抵抗や水と共に流れてくるゴミ等が掛かり光
ケーブルに過度の力が加わることになり、ケーブルを損
傷させ、断線の原因になるという問題点があった。In this case, the optical cable submerged at the bottom of the pipe receives almost no resistance from the flow of sewage, but in order to guide the optical cable to the inlet/drawer section at the top of the pipe, it is necessary to bend and raise the optical cable. This poses a problem in that excessive force is applied to the optical cable due to resistance due to the flow of the sewage itself and debris flowing with the water, which can damage the cable and cause it to break.
本発明はこのような問題に対処するために創案されたも
ので、下水管の内壁に光ケーブルの立上り部分を固定し
て下水の流れによる光ケーブルの損傷を防護する光ケー
ブル布設工法を提供することを目的とする。The present invention was devised to address such problems, and an object of the present invention is to provide an optical cable installation method that secures the rising portion of the optical cable to the inner wall of a sewer pipe to protect the optical cable from damage caused by the flow of sewage. shall be.
上記の目的を達成するため本発明は、下水管の底部に、
管の長さ方向に沿って光ケーブルを配設する光ケーブル
布設工法であって、上記下水管の底部と上部との間に光
ケーブルを引入れ引出すに際し、光ケーブルを下水管の
底部と上部との間で屈曲させ、下水管内壁面に防護カバ
ーで固定するようにし、この防護カバーは、鉛板で光ケ
ーブルを覆うようにすると共に、下水管内壁に水中接着
剤で接着、固定するようにしたことを特徴とするもので
ある。In order to achieve the above object, the present invention provides, at the bottom of the sewer pipe,
An optical cable installation method in which an optical cable is installed along the length of the pipe, and when the optical cable is pulled in and out between the bottom and top of the sewer pipe, the optical cable is installed between the bottom and the top of the sewer pipe. It is bent and fixed to the inner wall surface of the sewer pipe with a protective cover, and this protective cover is characterized by covering the optical cable with a lead plate and gluing and fixing it to the inner wall of the sewer pipe with an underwater adhesive. It is something to do.
このような光ケーブル布設工法では、光ケーブルの屈曲
部が鉛により下水管内壁に固定されるので、下水の流れ
から光ケーブルを防護でき、光ケーブルにゴミ等が掛か
るのも防止できる。また、防護カバーは下水の流れによ
る抵抗を受けにくい形状になるので、ゴミ等が防護カバ
ー付近に堆積することがなく、光ケーブルの固定手段と
して安定したものになる。In such an optical cable installation method, the bent portion of the optical cable is fixed to the inner wall of the sewer pipe with lead, so the optical cable can be protected from the flow of sewage, and it is also possible to prevent dust from getting on the optical cable. Furthermore, since the protective cover has a shape that is less susceptible to resistance from the flow of sewage, dirt and the like will not accumulate near the protective cover, making it a stable means for fixing optical cables.
以下、図面に基づいて本発明の一実施例について説明す
る。Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図は下水管の軸方向からみた断面図であり、下水管
２は、ヒユーム管と呼ばれる鉄筋コンクリート管で、直
径が２．２〜３ｍ、厚さ１０ｃｓｉ程度のものである。FIG. 1 is a cross-sectional view of a sewage pipe viewed from the axial direction, and the sewage pipe 2 is a reinforced concrete pipe called a Huum pipe, and has a diameter of 2.2 to 3 m and a thickness of about 10 csi.
光ケーブル３は防水構造のものが用いられる。この光ケ
ーブル３は、下水管２の長さ方向に沿う底部に沈めて配
設するが、ケーブルの引入れ引出し部（例えば後述する
マンホール）に導く箇所では光ケーブル３を屈曲させる
必要がある。The optical cable 3 used has a waterproof structure. The optical cable 3 is installed by being submerged at the bottom along the length of the sewer pipe 2, but it is necessary to bend the optical cable 3 at a location where the cable is led to a lead-in/extraction section (for example, a manhole described later).
この光ケーブル３の屈曲部を防護カバー１で下水管２の
内壁に固定する。該防護カバー１には鉛板１１が用いら
れる。鉛板１１は、光ケーブル３を挿通する挿通孔４を
有し、１１００）ｃ／ｍ程度のものを適度の長さに切断
したものが用いられる。鉛板１１を下水管２の内壁に固
定する方法は、鉛板１１の下面に例えばパテ剤のような
水中接着剤１３を塗布して下水管２の内壁に落とし込む
。この水中接着剤１３のみでは固着が不十分と判断され
る場合は、アンカーボルト１２を鉛板１１の両端に打ち
込む。さらに、光ケーブル３の鉛板１１への固定は、光
ケーブル３の上から挿通孔４を嵌合するようにして鉛板
Ｕを被せ、木ハンマー等で上方から叩いて水中接着剤１
３の接着性を高めると共に鉛板Ｕを変形させて挿通孔４
を光ケーブル３に密着させ、下水管２の内壁に固着させ
てもよいし、予め鉛板１１を下水管２の内壁に固着させ
た後に光ケーブル３を挿通孔４に挿入して鉛板１１の上
方から叩いて変形させるようにしてもよい。The bent portion of this optical cable 3 is fixed to the inner wall of the sewer pipe 2 with a protective cover 1. A lead plate 11 is used for the protective cover 1. The lead plate 11 has an insertion hole 4 through which the optical cable 3 is inserted, and a lead plate having a diameter of about 1100 cm/m and cut into appropriate lengths is used. The method of fixing the lead plate 11 to the inner wall of the sewer pipe 2 is to apply an underwater adhesive 13 such as putty to the lower surface of the lead plate 11 and drop it onto the inner wall of the sewer pipe 2. If it is determined that the underwater adhesive 13 alone is insufficient for fixing, anchor bolts 12 are driven into both ends of the lead plate 11. Furthermore, to fix the optical cable 3 to the lead plate 11, cover the optical cable 3 with the lead plate U so as to fit the insertion hole 4, and then hit it from above with a wooden hammer or the like to apply underwater adhesive 1.
3 by increasing the adhesion and deforming the lead plate U to form the insertion hole 4.
may be tightly attached to the optical cable 3 and fixed to the inner wall of the sewer pipe 2, or the lead plate 11 may be fixed to the inner wall of the sewer pipe 2 in advance and then the optical cable 3 is inserted into the insertion hole 4 and the lead plate 11 is inserted above the lead plate 11. It is also possible to deform it by hitting it.
第２図は下水管２の上方からみた断面図であり、光ケー
ブル３の屈曲部を下水管２の内壁面に固定した状態を示
している。防護カバー１は長さ５０（７）程度の鉛板１
１のブロックを複数個並べて使用しているが、これらの
ブロックを一体にしたものを使用することも可能である
。そして、光ケーブル３は、第３図に示すようにマンホ
ール５内に設けたカブラＢまで延出し、光ケーブル３の
引入れ引出し部とするのである。なお、この布設工法は
、実施例の既設下水管に限らず新設の下水管にも同様に
施工でき、また、光ケーブルの下水管底部からの立上り
は、マンホールに限らず下水管の上部に適宜設けた外部
取出し孔から管外と連通ずるようにしてもよい。FIG. 2 is a cross-sectional view of the sewer pipe 2 seen from above, showing a state in which the bent portion of the optical cable 3 is fixed to the inner wall surface of the sewer pipe 2. The protective cover 1 is a lead plate 1 with a length of about 50 (7)
Although a plurality of blocks of 1 are used side by side, it is also possible to use a combination of these blocks. The optical cable 3 then extends to a cover B provided in the manhole 5, as shown in FIG. Note that this installation method can be applied not only to the existing sewer pipes in the example but also to newly constructed sewer pipes, and the rise of the optical cable from the bottom of the sewer pipe can be installed not only in the manhole but also at the top of the sewer pipe as appropriate. The tube may be communicated with the outside of the tube through an external extraction hole.
以上説明したように本発明の光ケーブル布設工法によれ
ば、下水管を光ケーブル管路として用いるので、ケーブ
ル管路を新設する必要がなく費用および労力を著しく削
減できる。また、下水管底部と上部との間の光ケーブル
の屈曲部が下水管内壁に比重の重い鉛板で固定されるの
で、下水の流れから光ケーブルを防護でき、光ケーブル
にゴミ等が掛かるのを防止できる。さらに、防護カバー
は、平らに変形できて下水の流れによる抵抗を受けにく
い形状に変形できるので、ゴミ等が防護カバー付近に堆
積することがなく、光ケーブルの固定手段として安定し
たものとなる。さらにまた、この施工法は簡単であり、
既設の下水管はもとより、新設の下水管にも施工が容易
であり、光ケーブル布設工事を安価に実施できる。As explained above, according to the optical cable installation method of the present invention, a sewer pipe is used as an optical cable conduit, so there is no need to newly install a cable conduit, and costs and labor can be significantly reduced. In addition, the bent part of the optical cable between the bottom and top of the sewer pipe is fixed to the inner wall of the sewer pipe with a heavy lead plate, which protects the optical cable from the flow of sewage and prevents dust from getting on the optical cable. . Furthermore, since the protective cover can be deformed into a flat shape that is less susceptible to resistance from the flow of sewage, dirt and the like will not accumulate near the protective cover, making it a stable means for fixing optical cables. Furthermore, this construction method is simple,
It is easy to install not only existing sewage pipes but also new sewage pipes, and optical cable installation work can be carried out at low cost.
第１図および第２図は本発明の一実施工法を示し、第１
図は下水管の軸方向からみた断面図、第２図は下水管の
上方からみた断面図、第３図は施工状態全体の側断面図
である。
１・・・防護カバー １１・・・鉛板、１２・・・アン
カーボルト、１３・・・水中接着剤、２・・・下水管、
３・・・光ケーブル、４・・・挿通孔、５・・・マンホ
ール、Ｂ・・・カブラ。Figures 1 and 2 show one implementation method of the present invention.
The figure is a cross-sectional view of the sewer pipe viewed from the axial direction, FIG. 2 is a cross-sectional view of the sewer pipe viewed from above, and FIG. 3 is a side cross-sectional view of the entire construction state. 1... Protective cover 11... Lead plate, 12... Anchor bolt, 13... Underwater adhesive, 2... Sewer pipe,
3... Optical cable, 4... Insertion hole, 5... Manhole, B... Cover.
Claims (1)
設する光ケーブル布設工法であって、上記下水管の底部
と上部との間に光ケーブルを引入れ引出すに際し、光ケ
ーブルを下水管の底部と上部との間で屈曲させ、下水管
内壁面に防護カバーで固定するようにし、この防護カバ
ーは、鉛板で光ケーブルを覆うようにすると共に、下水
管内壁に水中接着剤で接着、固定するようにしたことを
特徴とする光ケーブル布設工法。An optical cable installation method in which an optical cable is installed at the bottom of a sewer pipe along the length of the pipe. and the upper part, and fixed to the inner wall of the sewer pipe with a protective cover.This protective cover covers the optical cable with a lead plate and is glued and fixed to the inner wall of the sewer pipe with underwater adhesive. An optical cable installation method characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2465689A JP2869462B2 (en) | 1989-02-01 | 1989-02-01 | Optical cable laying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2465689A JP2869462B2 (en) | 1989-02-01 | 1989-02-01 | Optical cable laying method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02203302A true JPH02203302A (en) | 1990-08-13 |
| JP2869462B2 JP2869462B2 (en) | 1999-03-10 |
Family
ID=12144186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2465689A Expired - Fee Related JP2869462B2 (en) | 1989-02-01 | 1989-02-01 | Optical cable laying method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2869462B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5076861A (en) * | 1987-04-30 | 1991-12-31 | Seiko Epson Corporation | Permanent magnet and method of production |
| US5186761A (en) * | 1987-04-30 | 1993-02-16 | Seiko Epson Corporation | Magnetic alloy and method of production |
| US5460662A (en) * | 1987-04-30 | 1995-10-24 | Seiko Epson Corporation | Permanent magnet and method of production |
| EP0942504A1 (en) * | 1998-03-12 | 1999-09-15 | Siemens Aktiengesellschaft | Methode for fastening cables in ducts or tubesystems |
| DE10035267A1 (en) * | 2000-07-20 | 2002-01-31 | Scc Special Comm Cables Gmbh | Optical cable and duct or pipe system with an installed optical cable |
| WO2010018376A1 (en) * | 2008-08-12 | 2010-02-18 | 13 Group Limited | Laying network cables in sewers |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62190245A (en) * | 1986-02-17 | 1987-08-20 | Japan Synthetic Rubber Co Ltd | Rubber composition |
-
1989
- 1989-02-01 JP JP2465689A patent/JP2869462B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62190245A (en) * | 1986-02-17 | 1987-08-20 | Japan Synthetic Rubber Co Ltd | Rubber composition |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5076861A (en) * | 1987-04-30 | 1991-12-31 | Seiko Epson Corporation | Permanent magnet and method of production |
| US5186761A (en) * | 1987-04-30 | 1993-02-16 | Seiko Epson Corporation | Magnetic alloy and method of production |
| US5460662A (en) * | 1987-04-30 | 1995-10-24 | Seiko Epson Corporation | Permanent magnet and method of production |
| EP0942504A1 (en) * | 1998-03-12 | 1999-09-15 | Siemens Aktiengesellschaft | Methode for fastening cables in ducts or tubesystems |
| US6377734B1 (en) | 1998-03-12 | 2002-04-23 | Ernst Mayr | Cable network in a system of ducts and pipes having a flowing media and a method of securing the network in the system |
| DE10035267A1 (en) * | 2000-07-20 | 2002-01-31 | Scc Special Comm Cables Gmbh | Optical cable and duct or pipe system with an installed optical cable |
| DE10035267B4 (en) * | 2000-07-20 | 2007-09-06 | CCS Technology, Inc., Wilmington | Optical cable and duct or pipe system with an installed optical cable |
| WO2010018376A1 (en) * | 2008-08-12 | 2010-02-18 | 13 Group Limited | Laying network cables in sewers |
| AU2009281011B2 (en) * | 2008-08-12 | 2015-05-14 | Fibre Optic Solutions Limited | Laying network cables in sewers |
| US9385518B2 (en) | 2008-08-12 | 2016-07-05 | Fibre Optic Solutions Limited | Laying network cables in sewers |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2869462B2 (en) | 1999-03-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |