JPH10238653A - Long body installation method in space of underground piping - Google Patents

Long body installation method in space of underground piping

Info

Publication number
JPH10238653A
JPH10238653A JP5539997A JP5539997A JPH10238653A JP H10238653 A JPH10238653 A JP H10238653A JP 5539997 A JP5539997 A JP 5539997A JP 5539997 A JP5539997 A JP 5539997A JP H10238653 A JPH10238653 A JP H10238653A
Authority
JP
Japan
Prior art keywords
long body
pipeline
long
space
laid
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
Application number
JP5539997A
Other languages
Japanese (ja)
Inventor
Hiroshi Akiyama
博 秋山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Cable Ltd
Original Assignee
Hitachi Cable Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Cable Ltd filed Critical Hitachi Cable Ltd
Priority to JP5539997A priority Critical patent/JPH10238653A/en
Publication of JPH10238653A publication Critical patent/JPH10238653A/en
Pending legal-status Critical Current

Links

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
    • G02B6/52—Underground or underwater installation; Installation through tubing, conduits or ducts using fluid, e.g. air

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Electric Cable Installation (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a new execution method in which a new long body is closely attached to or installed with the prescribed intervals on a preliminarily installed long body in a pipe. SOLUTION: When a long body 2 such as a power cable is already installed in a pipe 1, and other long body 3 such as a communication cable, an optical fiber cable and a heat pipe are continuously arranged in a closely attaching manner to the long body 2 in a gap between the pipe and the long body, the newly installed long body 3 and a flexible bag-shaped body 4 are pulled in and installed as a means for uniform close attachment over the whole length in the longitudinal direction. The fluid such as air and sand is fed into the bag-shaped body 4, and the newly installed long body is pressed against the existing long body in a closely attaching manner, and installed therealong.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】この発明は、例えば管路内に
布設された電力ケーブル上に新たに第２のケーブルなど
の長尺体を布設し、それらの間隔を一定に保つように布
設するとか、あるいは既設の電力ケーブル上に新たに第
２のケーブルを密着するように布設する工法に関するも
のである。BACKGROUND OF THE INVENTION The present invention relates to, for example, laying a new long body such as a second cable on a power cable laid in a pipeline, and laying the body so as to keep a constant interval between them. Alternatively, the present invention relates to a method of laying a new second cable on an existing power cable so as to closely adhere thereto.

【０００２】[0002]

【従来の技術】従来、管路内に既に電力ケーブルが布設
されており、この電力ケーブルに併設して新たに通信ケ
ーブル，光ファイバケーブル，ヒートパイプなどの他の
長尺体を布設する必要が生じている。このとき、従来は
既設の電力ケーブルの側にパイプを布設し、そのパイプ
内に空気を流し込み、このパイプ内に新たに布設する長
尺体を送り込んで布設する工法が行われている（ＨＡＣ
ＴＯＳ工法と呼ばれている）。2. Description of the Related Art Conventionally, a power cable is already laid in a pipeline, and it is necessary to newly lay another long body such as a communication cable, an optical fiber cable, and a heat pipe in addition to the power cable. Has occurred. At this time, conventionally, a method of laying a pipe on the side of an existing power cable, flowing air into the pipe, and feeding a new elongated body to be laid into the pipe to lay the pipe (HAC) has been performed.
It is called TOS method).

【０００３】[0003]

【発明が解決しようとする課題】ところで、このように
して布設された新たな長尺体においては、図６の側断面
図および図６のＡ−Ａ矢視図である図７に示されるよう
に、管路１内に既に布設された電力ケーブル２の上にさ
らに長尺体３を密着して布設する場合、管路１には凹凸
があって曲がり部１ａ，１ｂが存在し、このような曲が
り部の凹凸のある管路１内に電力ケーブルのような長尺
体２が布設されていて、この長尺体２に密着して例えば
ヒートパイプなどの新たに長尺体３を布設する必要があ
るとすると、長手方向に凹凸のある管路１内に布設され
た長尺体２自体が凹凸が増幅された状態で布設され、こ
とに曲がり部１ａにおいて管路１から浮き上がった状態
で布設される。ここに新たな長尺体３を密着して布設す
る場合、図６に示されるように新たな長尺体３が曲がり
部１ａの近辺で完全に浮き上がってしまい、密着させて
布設することが困難になる。また、管路１と長尺体２と
の間のスペースが管路長に亘り一様にはなっていなく、
このような空間にさらにヒートパイプなどの長尺体３を
長尺体２に密着させて布設しようとしても、長尺体３の
弾性や長尺体３がドラムに巻かれた時の曲がり癖や長手
方向に不均一なスペースの形状から、殆ど両者を密着布
設することは難しいものとなっている。By the way, in the new elongated body laid in this way, as shown in FIG. 7 which is a side sectional view of FIG. 6 and an AA view of FIG. In the case where the long body 3 is further laid in close contact with the power cable 2 already laid in the pipe 1, the pipe 1 has irregularities and bends 1a and 1b. A long body 2 such as a power cable is laid in a conduit 1 having a rough bend, and a new long body 3 such as a heat pipe is laid in close contact with the long body 2. If it is necessary, the long body 2 itself laid in the pipe 1 having unevenness in the longitudinal direction is laid in a state where the unevenness is amplified, and particularly in a state where the long body 2 is lifted from the pipe 1 at the bent portion 1a. It is laid. When the new long body 3 is laid in close contact here, as shown in FIG. 6, the new long body 3 completely rises near the bent portion 1a, and it is difficult to lay in close contact. become. Also, the space between the pipe 1 and the elongated body 2 is not uniform over the length of the pipe,
Even if an attempt is made to lay a long body 3 such as a heat pipe in close contact with the long body 2 in such a space, the elasticity of the long body 3 and a bending habit when the long body 3 is wound around a drum are considered. Due to the shape of the space that is not uniform in the longitudinal direction, it is difficult to closely lay both of them.

【０００４】この発明はこのような点に鑑みてなされた
もので、管路内に予め布設されている長尺体に新しく長
尺体を密着あるいは一定間隔を有して布設する場合の新
たな工法を提供することを目的とする。[0004] The present invention has been made in view of such a point, and is a new method for laying a new long body closely or at a fixed interval on a long body previously laid in a pipeline. The purpose is to provide a construction method.

【０００５】[0005]

【課題を解決するための手段】この発明は、管路内に既
に電力ケーブルなどの長尺体が布設してあって、管路と
その長尺体の間の空隙に、該長尺体に密着させて例えば
通信ケーブル，光ファイバケーブル，ヒートパイプなど
の他の長尺体を併設する場合、両長尺体同士を長さ方向
全長に亘って一様に密着させる手段として、新しく引き
込む長尺体と柔軟性のある袋状体とを引き込み布設し、
この袋状体中に空気や砂などの流体を送り込んで、新し
く引き込む長尺体を既設の長尺体に密着するように押し
付けて布設することを特徴とする埋設管路内スペースへ
の長尺体布設工法であり、また、上記柔軟性のある袋状
体としては、常時は扁平になる中空袋状のものである埋
設管路内スペースへの長尺体布設工法である。According to the present invention, a long body such as a power cable is already laid in a pipeline, and a gap is provided between the pipeline and the long body. In the case where another long body such as a communication cable, an optical fiber cable, a heat pipe, and the like are provided in close contact with each other, as a means for uniformly bringing the two long bodies into close contact with each other over the entire length in the length direction, a newly drawn long body is used. The body and the flexible bag-like body are pulled in and laid,
By feeding a fluid such as air or sand into this bag-like body, the newly-drawn long body is pressed against the existing long body to be laid, and the long body is laid into the buried pipeline space. The flexible bag-like body is a long body-laying method in a space in a buried conduit, which is a hollow bag that is normally flat.

【０００６】また、管路内に既に電力ケーブルなどの長
尺体が布設してあって、管路とその長尺体の間の空隙
に、長尺体に一定の間隔を保って例えば通信ケーブル，
光ファイバケーブル，ヒートパイプなどの他の長尺体を
併設する場合、長さ方向全長に亘って一様な間隔を保持
する手段として、既設長尺体と新しく引き込む長尺体の
間に柔軟性のある弾性スペーサを全長または必要な箇所
毎に間欠的に併設し、新しく引き込んだ長尺体を既設の
長尺体に一定の間隔を保って布設することを特徴とする
埋設管路内スペースへの長尺体布設工法であり、また、
上記柔軟性のある弾性スペーサとしては、少なくとも一
定期間は弾性を保持する円形もしくは長円形の断面（中
空でもよい）を有するプラスチックなどからなる弾性体
である埋設管路内スペースへの長尺体布設工法である。Further, a long body such as a power cable is already laid in the pipeline, and for example, a communication cable is provided in the gap between the pipeline and the long body at a constant interval between the elongated bodies. ,
When other elongate bodies such as optical fiber cables and heat pipes are installed together, as a means to maintain a uniform spacing over the entire length in the length direction, the flexibility between the existing elongate body and the elongate body to be newly drawn in is used. To the space in a buried pipeline, a long-sized elastic body is installed intermittently along the entire length or at required points, and the newly-drawn long body is laid at regular intervals on the existing long body. Is a long body laying method,
As the flexible elastic spacer, a long body is laid in a space in a buried pipe, which is an elastic body made of plastic or the like having a circular or oval cross section (may be hollow) for maintaining elasticity for at least a certain period of time. It is a construction method.

【０００７】さらに、上記柔軟性のある袋状体または弾
性スペーサの布設のタイミングは、新しく引き込む長尺
体と同時に管路内に引き込んで布設するか、または新し
く布設する長尺体を布設した後から改めて引き込んで布
設するようにした埋設管路内スペースへの長尺体布設工
法である。Further, the timing of laying the above-mentioned flexible bag-like body or elastic spacer may be determined by pulling and laying in a conduit at the same time as a newly-drawn long body, or after laying a newly-installed long body. This is a method of laying a long body in the space inside the buried pipeline, which is drawn in again and laid.

【０００８】[0008]

【発明の実施の形態】以下、図面に基づいてこの発明の
実施の形態を説明する。図１は管路の曲がり部（図６の
Ｂ−Ｂ断面）における横断面図である。即ち、管路１内
には既に電力ケーブル２が布設されている。この電力ケ
ーブル２の上に密着してヒートパイプ３を布設する場合
であるが、ヒートパイプ３と同時に例えば消防用の布ホ
ース，可撓性プラスチックパイプ，散水ホースなどであ
る柔軟性のある袋状体４を扁平状態のまま上側に配置し
て一緒に引き入れる。引き入れが終われば袋状体４にそ
の端部から空気または砂などの流体を送り込み、この袋
状体４を図２に示すように空気５などにより４´に示す
ように膨らませ、ヒートパイプ３に下方への外力を加え
て管路１内で一様に密着させることが可能である。従っ
て、管路１内の既設の電力ケーブル２の上に新たにヒー
トパイプ３を密着させて容易に布設することができる。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a transverse cross-sectional view of a bent portion (a cross section taken along the line BB in FIG. 6) of the pipeline. That is, the power cable 2 is already laid in the pipeline 1. In the case where the heat pipe 3 is laid in close contact with the power cable 2, a flexible bag-shaped material such as a fire hose for fire fighting, a flexible plastic pipe, a sprinkling hose, or the like is used at the same time as the heat pipe 3. The body 4 is placed on the upper side in a flat state and pulled in together. When the drawing-in is completed, a fluid such as air or sand is fed into the bag-like body 4 from the end thereof, and the bag-like body 4 is inflated by air 5 or the like as shown in FIG. By applying a downward external force, it is possible to bring the pipe line 1 into close contact evenly. Accordingly, the heat pipe 3 can be newly laid in close contact with the existing power cable 2 in the pipe line 1 and easily laid.

【０００９】このとき、ヒートパイプ３に沿って挿入す
る柔軟性のある袋状体４は、ヒートパイプ３の全長に渡
り併設できる長さでもよく、また、曲がり部などの必要
な所だけに入るように短尺のものを繋ぎ合わせるように
して挿入してもよい。At this time, the flexible bag-like body 4 inserted along the heat pipe 3 may have such a length that it can be provided along the entire length of the heat pipe 3, or only into a required portion such as a bent portion. As shown in FIG.

【００１０】上記の例では、柔軟性のある袋状体４を新
たに布設する長尺体と同時に管路内に引き入れて密着布
設する場合について説明したが、これは新たに布設する
長尺体３を既設の電力ケーブル２上に先に引き入れて布
設しておき、この新たに布設する長尺体３上に扁平状態
の袋状体４を後から引き入れて布設してもよいことは勿
論である。また、新たに布設する長尺体３をヒートパイ
プの例で説明したが、これは当然に通信ケーブル，光フ
ァイバケーブルなどであってもよい。In the above example, a case has been described in which the flexible bag-like body 4 is drawn into the conduit at the same time as the long body to be newly laid, and closely adhered to the pipe. 3 may be first drawn into the existing power cable 2 and laid, and the flat bag-like body 4 may be drawn and laid on the newly laid long body 3 later. is there. In addition, the elongate body 3 to be newly laid is described as an example of a heat pipe, but may be a communication cable, an optical fiber cable, or the like.

【００１１】次に、図３および図４の断面図に基づいて
詳しく説明する。図６における管路１の曲がり部分のＢ
−Ｂ矢視図である図３および直線部分のＡ−Ａ矢視図で
ある図４において、管路１内に既設の電力ケーブル２が
布設されているとする。このとき、管路１のＢ−Ｂ断面
である曲がり部１ａは、管路１に角度（θ）がついてい
る分スペースはｓｉｎθだけ小さくなっているので、図
６に示すようにＡ−Ａ断面である直線状部において断面
が丸くなる形状の柔軟性のある袋状体４を選んだとする
と、Ｂ−Ｂ断面である曲がり部では袋状体４は図３に示
されるように楕円に変形して新たに布設する例えばヒー
トパイプ３などを電力ケーブル２に強く密着させる力を
加えるのである。従って、図６に示されるような浮き上
がりは解消される。Next, a detailed description will be given based on the sectional views of FIGS. B at the bent portion of the pipeline 1 in FIG.
In FIG. 3 which is a view taken in the direction of arrow B, and FIG. 4 which is a view in the direction of arrow AA of the straight line portion, it is assumed that the existing power cable 2 is laid in the pipeline 1. At this time, the bent portion 1a, which is a cross section taken along the line BB of the pipeline 1, has a space reduced by sin θ due to the angle (θ) of the pipeline 1, so that the AA cross section as shown in FIG. Assuming that a flexible bag-like body 4 having a shape in which the cross section is rounded in the linear portion is selected, the bag-shaped body 4 is deformed into an ellipse as shown in FIG. For example, a force for strongly attaching a newly laid heat pipe 3 or the like to the power cable 2 is applied. Therefore, the lifting as shown in FIG. 6 is eliminated.

【００１２】上記実施例においては柔軟性のある袋状体
が中空のものについて説明したが、これは一定期間にお
いて弾性を有する断面円形あるいは長円形状のプラスチ
ックなどからなる充実の弾性体であっても同様の作用・
効果を得ることができる。この場合、柔軟性のある袋状
体に比べて空気などの流体を送り込むことなく新たに布
設する長尺体を既設の長尺体に密着して布設することが
できるので、それだけ作業性が向上したものになる。In the above-described embodiment, the flexible bag-shaped body is described as being hollow, but this is a solid elastic body made of plastic having a circular or elliptical cross section and having elasticity for a certain period of time. Has the same effect
The effect can be obtained. In this case, compared with a flexible bag-shaped body, a newly-installed long body can be laid in close contact with the existing long body without sending fluid such as air, so workability is improved accordingly. It will be.

【００１３】次に、管路内の既設の電力ケーブルに一定
の間隔を設けて新たに長尺体を布設する場合の実施例を
図５に基づいて説明する。管路１内には既設の電力ケー
ブル２が布設されている。この電力ケーブル２上に一定
の厚さを有するプラスチックなどからなる充実の弾性ス
ペーサ５を引き込んで配設する。この弾性スペーサ５は
全長に渡り一定の厚さを有するスペーサであってもよい
し、また間欠的に所定の間隔毎に一定の厚さを有するス
ペーサであってもよい。そして、この弾性スペーサ５上
に新たな長尺体３を引き込み、この上に柔軟性のある袋
状体４を引き入れて布設する。そして、先の例と同様に
柔軟性のある袋状体４に端部から空気などの流体を吹き
込んで膨らませ、管路１との間で長尺体３にスペーサ５
および電力ケーブル２への押付力を加え、電力ケーブル
２と長尺体３とを管路長に渡り一定の間隔を有して布設
することが可能となる。Next, a description will be given of an embodiment in which a long object is newly laid with a predetermined interval provided between the existing power cables in the pipeline with reference to FIG. An existing power cable 2 is laid in the pipeline 1. A solid elastic spacer 5 made of plastic or the like having a certain thickness is drawn in and arranged on the power cable 2. The elastic spacer 5 may be a spacer having a constant thickness over its entire length, or may be a spacer having a constant thickness intermittently at predetermined intervals. Then, a new elongated body 3 is drawn into the elastic spacer 5, and a flexible bag-like body 4 is drawn in and laid thereon. Then, as in the previous example, a fluid such as air is blown into the flexible bag-like body 4 from the end to inflate the bag-like body 4, and the spacer 5 is inserted into the elongated body 3 with the pipe 1.
By applying a pressing force to the power cable 2, the power cable 2 and the elongated body 3 can be laid at a constant interval over the length of the pipeline.

【００１４】上記実施例においては、弾性スペーサが充
実体のものについて説明したが、これは中空の弾性体で
あっても同様の作用・効果を得ることができる。この中
空の弾性スペーサは、確保された管路内のスペースにお
いて、中空部に砂などの流体を封入することによって、
既設の電力ケーブルと新たに引き入れる長尺体の間隔を
永久的に一定の間隔に保持させることが可能である。In the above embodiment, the solid elastic spacer has been described. However, the same operation and effect can be obtained even if the elastic spacer is a hollow elastic member. This hollow elastic spacer fills the hollow part with a fluid such as sand in the secured space in the pipeline,
The distance between the existing power cable and the elongated body to be newly drawn in can be permanently maintained at a constant distance.

【００１５】[0015]

【発明の効果】以上説明したとおり、この発明の埋設管
路内スペースへの長尺体布設工法によれば、管路内の既
設の長尺体に新たに布設する長尺体を密着あるいは一定
間隔をもって確実に布設することが可能となり、その作
業も容易である。As described above, according to the method of laying a long body in the space in a buried pipeline according to the present invention, a long body to be newly laid on an existing long body in the pipeline is brought into close contact with or fixed to a predetermined length. It is possible to reliably lay them at intervals, and the work is easy.

【図面の簡単な説明】[Brief description of the drawings]

【図１】実施例の埋設管路内スペースへの長尺体布設工
法を説明するための管路の横断面図、FIG. 1 is a cross-sectional view of a pipeline for explaining a method of laying a long body in a space in a buried pipeline according to an embodiment;

【図２】図１の状態から密着させるために袋状体を膨ら
ませた状態を示す管路の横断面図、FIG. 2 is a cross-sectional view of a pipeline showing a state in which a bag-like body has been inflated to bring the bag into close contact from the state of FIG. 1;

【図３】図６のＡ−Ａ断面における実施例の管路の横断
面図、FIG. 3 is a cross-sectional view of the conduit of the embodiment taken along the line AA in FIG. 6;

【図４】図６のＢ−Ｂ断面における実施例の管路の横断
面図、FIG. 4 is a cross-sectional view of the pipeline of the embodiment taken along the line BB in FIG. 6;

【図５】他の実施例の埋設管路内スペースへの長尺体布
設工法を説明するための管路の横断面図、FIG. 5 is a cross-sectional view of a pipeline for explaining a method of laying a long body in a space in a buried pipeline according to another embodiment;

【図６】従来の埋設管路内スペースへの長尺体布設工法
を説明するための管路の側断面図、FIG. 6 is a side sectional view of a pipeline for explaining a conventional method of laying a long body in a space in a buried pipeline,

【図７】図６のＡ−Ａ断面における管路の横断面図であ
る。FIG. 7 is a cross-sectional view of the conduit taken along the line AA in FIG. 6;

【符号の説明】[Explanation of symbols]

１ 管路 ２ 既設の長尺体 ３ 新たに布設する長尺体 ４ 柔軟性のある袋状体 ５ 流体 DESCRIPTION OF SYMBOLS 1 Pipeline 2 Existing long body 3 Newly laid long body 4 Flexible bag-like body 5 Fluid

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】 管路内に既に電力ケーブルなどの長尺体
が布設してあって、管路とその長尺体の間の空隙に、該
長尺体に密着させて例えば通信ケーブル，光ファイバケ
ーブル，ヒートパイプなどの他の長尺体を併設する場
合、両長尺体同士を長さ方向全長に亘って一様に密着さ
せる手段として、新しく引き込む長尺体と柔軟性のある
袋状体とを引き込み布設し、この袋状体中に空気や砂な
どの流体を送り込んで、新しく引き込む長尺体を既設の
長尺体に密着するように押し付けて布設することを特徴
とする埋設管路内スペースへの長尺体布設工法。An elongated body such as a power cable is already laid in a pipeline, and a communication cable, an optical cable, or the like is brought into close contact with the elongated body in a gap between the pipeline and the elongated body. When other elongate bodies such as fiber cable and heat pipe are installed in parallel, as a means to make both elongate bodies evenly adhere to each other over the entire length, a newly drawn elongate body and a flexible bag A buried pipe characterized in that the body is pulled in and laid, a fluid such as air or sand is fed into the bag-like body, and the newly drawn long body is pressed against the existing long body and laid. Long body laying method in the road space. 【請求項２】 上記柔軟性のある袋状体としては、常時
は扁平になる中空袋状のものである請求項１記載の埋設
管路内スペースへの長尺体布設工法。2. The method of laying a long body in a space in a buried conduit according to claim 1, wherein the flexible bag-like body is a hollow bag-like body which is always flat. 【請求項３】 管路内に既に電力ケーブルなどの長尺体
が布設してあって、管路とその長尺体の間の空隙に、長
尺体に一定の間隔を保って例えば通信ケーブル，光ファ
イバケーブル，ヒートパイプなどの他の長尺体を併設す
る場合、長さ方向全長に亘って一様な間隔を保持する手
段として、既設長尺体と新しく引き込む長尺体の間に柔
軟性のある弾性スペーサを全長または必要な箇所毎に間
欠的に併設し、新しく引き込んだ長尺体を既設の長尺体
に一定の間隔を保って布設することを特徴とする埋設管
路内スペースへの長尺体布設工法。3. An elongated body such as a power cable is already laid in the pipeline, and a communication cable is provided in the space between the pipeline and the elongated body at a constant interval between the elongated bodies. , Optical fiber cables, heat pipes, and other long bodies are installed together, as a means for maintaining a uniform spacing over the entire length in the length direction, a flexible space between the existing long body and the newly drawn long body is used. In a buried pipeline characterized by intermittently attaching elastic spacers with different lengths or every necessary location intermittently, and laying a newly drawn long body at a constant interval on an existing long body Long body laying method. 【請求項４】 上記柔軟性のある弾性スペーサとして
は、少なくとも一定期間は弾性を保持する円形もしくは
長円形の断面（中空でもよい）を有するプラスチックな
どからなる弾性体である請求項３記載の埋設管路内スペ
ースへの長尺体布設工法。4. The burying device according to claim 3, wherein the flexible elastic spacer is an elastic body made of plastic or the like having a circular or oval cross section (may be hollow) for maintaining elasticity for at least a certain period. Long body laying method in the space inside the pipeline. 【請求項５】 上記柔軟性のある袋状体または弾性スペ
ーサの布設のタイミングは、新しく引き込む長尺体と同
時に管路内に引き込んで布設するか、または新しく布設
する長尺体を布設した後から改めて引き込んで布設する
ようにした請求項１ないしは請求項４記載の埋設管路内
スペースへの長尺体布設工法。5. The timing of laying the flexible bag-like body or the elastic spacer is as follows: a long body to be newly drawn in and laid in the pipeline at the same time; 5. The method of laying a long body in a space in a buried pipeline according to claim 1, wherein the laying is carried out by re-drawing the long body from the space.
JP5539997A 1997-02-25 1997-02-25 Long body installation method in space of underground piping Pending JPH10238653A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5539997A JPH10238653A (en) 1997-02-25 1997-02-25 Long body installation method in space of underground piping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5539997A JPH10238653A (en) 1997-02-25 1997-02-25 Long body installation method in space of underground piping

Publications (1)

Publication Number Publication Date
JPH10238653A true JPH10238653A (en) 1998-09-08

Family

ID=12997466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5539997A Pending JPH10238653A (en) 1997-02-25 1997-02-25 Long body installation method in space of underground piping

Country Status (1)

Country Link
JP (1) JPH10238653A (en)

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