JP3466533B2 - Lining method of existing main pipe and mounting pipe - Google Patents

Lining method of existing main pipe and mounting pipe

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Publication number
JP3466533B2
JP3466533B2 JP2000088147A JP2000088147A JP3466533B2 JP 3466533 B2 JP3466533 B2 JP 3466533B2 JP 2000088147 A JP2000088147 A JP 2000088147A JP 2000088147 A JP2000088147 A JP 2000088147A JP 3466533 B2 JP3466533 B2 JP 3466533B2
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Japan
Prior art keywords
pipe
lining
repair
main pipe
peripheral
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JP2001269998A (en
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昌司 近藤
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大林道路株式会社
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Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、地中に敷設された
管渠の内周面をライニングによって補修するに際し、本
管に対する取付管の接続部分の補修を解決するための既
設管の本管及び取付管のライニング方法に関するもので
ある。 【0002】 【従来の技術】例えば下水道管渠は、地中に敷設された
本管と、各家庭に接続された取付管とを有しており、該
取付管が本管に対しソケットを介して或いは直接接続さ
れることで構成されている。このような管渠は、使用年
数の増加に伴う本管或いは取付管の老巧化により、或い
は地震や地盤沈下、重量車両の通行等の影響により、取
付管の部分や本管にクラック等の破損が生じ、土砂が本
管内に流入したり、漏水が発生するような虞がある。こ
のため、管渠を補修することが行なわれている。 【0003】管渠の補修方法としては開削方式,非開削
方式からなる各種の工法が採用されているが、その中
で、特公平4-56738号公報に開示された技術は、補修す
べき管渠に硬化性樹脂を含有させた可撓性ホースを導入
し、このホース内にガス流を流入させて内壁に密着せし
め、この状態で硬化機構を導入して硬化性樹脂を硬化せ
しめ、該硬化したホースによって管渠の内周面をライニ
ングするものである。この技術では、管渠を非開削状態
で補修することが出来、且つ硬化したホースが高い強度
を有するため、有利である。 【0004】また、管渠を構成する本管或いは取付管の
内周面を全周にわたって補修する技術として特公平6-98
682号公報の技術が提案されている。この技術は、止水
剤を含浸した不織布からなるスタートライナーと称する
ものを本管と取付管に夫々反転挿入することによって本
管及び取付管を止水処理した後、外周面がフィルムコー
ティングされた不織布に未硬化の硬化性樹脂を含浸して
なる本管ライニング材を本管内に反転挿入して本管のラ
イニングを行い、しかる後、前記本管ライニング材の少
なくとも取付管開口部に対応するフィルム部分を除去
し、鍔部を備え該鍔部の本管ライニング材に当接する当
接部を未硬化の硬化性樹脂を含浸した不織布で構成した
取付管ライニング材を取付管内に本管側から挿入して取
付管のライニングを行い、しかる後、取付管ライニング
材鍔部の当接部を本管ライニング材の内周面に圧接した
状態で該当接部に含浸された前記硬化性樹脂を硬化させ
て本管ライニング材と取付管ライニング材とを接合一体
化する管ライニング方法である。この技術により本管ラ
イニング材と取付管ライニング材を一体化することが出
来る。 【0005】 【発明が解決しようとする課題】しかし上記本管と枝管
との接続部を補修する技術であっても未だ完全なもので
はなく、管渠が地震や地盤沈下、或いは地上を通過する
重量車両による振動等の影響を受けたとき、本管ライニ
ング材と枝管ライニング材の鍔部との接続部に剪断力や
引張力,圧縮力等の全方向の力が作用して該接続部が分
離する虞がある。 【0006】本発明の目的は、管渠を構成する本管と取
付管との接続部に於ける合理的な補修方法を提供するこ
とにある。 【0007】 【課題を解決するための手段】上記課題を解決するため
に本発明に係る既設管の本管及び取付管のライニング方
法は、既設管の本管の内周面に未硬化の硬化性樹脂を含
む本管補修用ライニング材を密着させ、該本管補修用ラ
イニング材を硬化させる本管に対するライニング工程
と、取付管の内周面に未硬化の硬化性樹脂を含む取付管
補修用ライニング材を密着させ、該取付管補修用ライニ
ング材を硬化させる取付管のライニング工程とを含む既
設管の本管及び取付管に対するライニング方法であっ
て、本管の内周面に沿うサドル部と該サドル部に突設さ
れ取付管の内周面に略沿う筒部とを備え、前記サドル部
と筒部とは未硬化の硬化性樹脂を含む材料によって一体
成形され且つ筒部の内周面には該筒部の全周にわたって
少なくとも1つの環状止水パッキンを備え、且つサドル
部の内周面に取付管の全周を囲む環状止水パッキンを備
えた補修部材を、本管に対する取付管の接続部に配置す
ると共に筒部及びサドル部を夫々取付管の内周面及び本
管の内周面に接触させると共に硬化させて取り付け、そ
の後、接続部に補修部材を取り付けた本管内に未硬化の
本管補修用ライニング材を挿入すると共に空気圧により
拡径して本管の内周面に密着させると同時に補修部材の
サドル部を本管の内周面に密着させ、次いで、本管補修
用ライニング材を硬化させて本管ライニングを形成し、
その後、前記本管ライニングの取付管に対応する部位に
開口部を形成し、更に、未硬化の取付管補修用ライニン
グ材を取付管の内周面及び補修部材の筒部の内周面を被
覆するように挿入すると共に空気圧により拡径して取付
管の内周面及び補修部材の筒部の内周面に密着させ、次
いで前記取付管補修用ライニング材を硬化させて取付管
ライニングを形成することを特徴とするものである。 【0008】上記の本発明に係る既設管の本管及び取付
管のライニング方法では、本管と取付管の接続部に配置
した補修部材を介して本管補修用ライニング材と取付管
補修用ライニング材を接続するので、取付管補修用ライ
ニング材に本管補修用ライニング材と接続させる鍔部を
形成する必要がない。このため、取付管補修用ライニン
グ材をスリーブ状のままで使用することが出来、地震や
地盤沈下或いは重量車両の通過に伴う振動等が作用して
も、これらに起因して、接続部に対して取付管補修用ラ
イニング材及び本管補修用ライニング材が固定されてな
く自在性が生じるため、接続部に支障が生じることがな
い。 【0009】上記の本発明に係る既設管の本管及び取付
管のライニング方法に於いて、サドル部の内周面に取付
管の全周を囲む環状止水パッキンを備えた補修部材を用
いるので、補修部材のサドル部と硬化した本管補修用ラ
イニング材との間隙から漏水することがない。 【0010】 【発明の実施の形態】以下、本発明に係る既設管の本管
及び取付管のライニング方法(以下、単に「本ライニン
グ方法」という)の好ましい実施形態について図を用い
て説明する。図1は本ライニング方法の補修部材の取り
付けから本管ライニングまでの工程を示し、(a)は本
管と取付管との接続部に補修部材を配置した状態を説明
する図であり、(b)は本管内壁を本管補修用ライニン
グ材によってライニングした状態を説明する図である。
図2は本ライニング方法の本管ライニング後取付管に対
応するライニング部分に開口を形成ししかる後取付管に
ライニングする工程を示し、(a)は本管ライニングの
取付管に対応する部分に開口を形成した状態を説明する
図であり、(b)は開口部を形成後に取付管内に未硬化
のライニング材を挿入した状態を説明する図であり、
(c)は前記ライニング材を取付管に密着,硬化させ、
取付管ライニングの本管側の端部を本管ライニングに合
わせて切断除去した状態を示す図である。図3は本ライ
ニング方法に於いて用いる補修部材を示し、(a)は補
修部材の第1の例を示し、(b)は補修部材の第2の例
を示す。図4はパッキンの様々な例を示し、(a)は断
面が楕円で中に断面楕円形の空隙を有するパッキンを示
し、(b)は断面が楕円形で中に切溝を有するパッキン
を示し、(c)は断面が方形で中に切溝を有するパッキ
ンを示し、(d)は断面が方形で中に楕円形の空隙を有
するパッキンを示し、(e)は断面が方形で中に断面方
形の空隙を有するパッキンを示し、(f)は断面が三角
形で中に切溝を有するパッキンを示し、(g)は断面が
台形で中に切溝を有するパッキンを示す。 【0011】以下、本ライニング方法について工程順に
説明する。先ず、図1(a)に示すように、本管1と取
付管2との接続部3に補修部材4を配置する。本管1に
対する取付管2の取付角度は必ずしも一義的なものでは
なく、個々の取付管2毎に異なる場合が多い。このた
め、管渠を補修する場合、最初に管内ロボット等によっ
て本管1に形成された接続部3の位置、該接続部3を構
成する取付管2の寸法,角度等のデータが採取される。 【0012】次ぎに補修材4について説明する。図3
(a)に示すように補修部材4は、外周が本管1の内周
面に沿うサドル部4aと、外周が取付管2の内周面に沿
う筒部4bとによって構成されている。この補修部材4
は、補修用のライニング材と同様に未硬化の硬化性樹脂
を含浸させた不織布又は織布によって、サドル部4aに
相当する部分と、筒部4bに相当する部分とを一体的に
形成した可撓性を持った素材からなり、この素材にはサ
ドル部4aの裏側と筒部4bの内側に夫々少なくとも1
本の環状止水パッキン5が接着剤を介して取り付けられ
る。図3(b)は補修部材4の別の例を示し、この補修
部材4に於いてはサドル部4aは本管内壁に沿う円筒形
をしている。 【0013】環状止水パッキン5はネオプレン(登録商
標)等の耐熱性ゴムからなり内部に空隙9もしくは切溝
10を有し変形可能に形成されている。環状止水パッキン
の断面形状は図4(a)〜(g)に示すように楕円形、
方形、三角形、台形等の断面形状を取ることが出来る。 【0014】前記した補修部材4を予めT字状或いはト
字状に形成され内部に放射線照射ランプを備えたチュー
ブ状の部材の外側に装着して所定の接続部3に移動さ
せ、その後、前記チューブ状部材内に空気圧を作用させ
て膨張させることで補修部材4のサドル部4a及び筒部
4bを夫々本管1の内周面及び取付管2の内周面に密着
させ、この状態で紫外線を照射して補修部材4の素材を
硬化させることで目的の接続部3に取り付けられる(図
1(a)参照)。この場合、補修部材4は、本管1或い
は取付管2との接触面に接着されることなく夫々密着固
定される。このような補修部材の固定技術としては、例
えば特開平10-286877号公報に開示された「管内面補修
装置」がある。 【0015】本管1に於ける必要な接続部3に補修部材
4を取り付けた後、本管1にライニングを行なう。この
ライニング方法は、未硬化の硬化性樹脂を含む本管補修
用ライニング材を本管1内に挿入し、該本管補修用ライ
ニング材の内部に空気圧を作用させて膨張させることで
本管1の内周面に密着させる。 【0016】このとき、接続部3に配置された補修部材
4は、図1(b)に示すように、サドル部4aが本管補
修用ライニング材6によって本管1の内周面に圧接させ
られる。この状態で本管補修用ライニング材6を硬化さ
せることで、本管1の内周面を本管補修用ライニング材
6によって補修する。従って、補修部材4のサドル部4
aは本管補修用ライニング材6及び本管1の内周面に対
し強固に密着する。 【0017】上記の如くして本管1の内周面を補修した
とき、取付管2は本管補修用ライニング材6によって閉
塞される。このため、ライニング後、各取付管2毎に閉
塞する本管補修用ライニング材6を穿孔して開口部7を
形成する。この開口作業は、穿孔用のカッターを備えた
ロボット等を用いて行なわれる。 【0018】次いで、取付管2の補修を行なう。この補
修は、図2(b)に示すように、取付管2の内部に未硬
化の硬化性樹脂を含む取付管補修用ライニング材8を挿
入し、この取付管補修用ライニング材8の内部に空気圧
を作用させて膨張させることで取付管2の内周面に密着
させる。このとき、接続部3に配置された補修部材4
は、筒部4bが取付管補修用ライニング材8によって取
付管2の内周面に圧接させられる。 【0019】その後、膨張させた取付管補修用ライニン
グ材8を硬化させることで、取付管2の内周面を硬化し
た取付管補修用ライニング材8によって補修する。取付
管補修用ライニング材8の硬化に伴って、補修部材4の
筒部4bは取付管補修用ライニング材8及び取付管2の
内周面に対し強固に密着する。 【0020】次いで、図2(c)に示すように、取付管
2の内周面を補修した取付管補修用ライニング材8の端
部を切削等の手段で成形することで、本管1と取付管2
に対するライニングが終了する。 【0021】上記構成に於いて、本管1と取付管2との
接続部3では、補修部材4のサドル部4aは本管1の内
周面に密着しており、このサドル部4aに本管補修用ラ
イニング材6が密着した状態で硬化している。また補修
部材4の筒部4bは取付管2の内周面に密着しており、
この筒部4bに取付管補修用ライニング材8が密着した
状態で硬化している。このため、筒部4bと取付管補修
用ライニング材8及びサドル部4bと本管補修用ライニ
ング材6の間に挟まれた環状止水パッキン5は両者に押
圧されて充分な止水機能を発揮し、取付管2と取付管補
修用ライニング材8との間に地下水等が浸入した場合で
あっても、浸入した地下水等が本管補修用ライニング材
6の内部に漏れることがない。 【0022】上記の如く、各ライニング材6,8は夫々
補修部材4のサドル4a,筒部4bに対しスリーブ状の
形状を保持して密着硬化している。このため、取付管ラ
イニング材8に鍔部を形成したり、ライニング材6,8
を一体化する必要はない。このため、各ライニング材
6,8には無理な力が作用することがなく、安定した強
度を保持することが可能である。 【0023】即ち、地震や地盤沈下或いは重量車両の通
行に伴う振動等の影響によって、本管1と取付管2の接
続部3に剪断力や引張力或いは圧縮力等複雑な方向の力
が作用した場合であっても、これらの力によって、補修
部材4のサドル部4aと本管補修用ライニング材6との
密着度、筒部4bと取付管補修用ライニング材8との密
着度が損なわれることがなく、管渠としての機能を長期
間にわたって安定して発揮することが可能である。 【0024】尚、各ライニング材6,8は紫外線硬化型
ライニング材であって良く、熱硬化型ライニング材であ
っても良い。また補修部材4は紫外線硬化型補修部材で
あっても良く、熱硬化型補修部材であっても良い。 【0025】 【発明の効果】以上詳細に説明したように本発明に係る
ライニング方法では、本管と取付管との接合部に、予め
本管の内周面に沿ったサドル部と取付管の内周面に沿っ
た筒部とを有する補修部材を配置し、その後、本管補修
用ライニング材によって本管の内周面を補修すると同時
にサドル部と接続し、更に、取付管補修用ライニング材
によって取付管の内周面を補修すると同時に筒部と接続
することが出来る。このため、各ライニング材は補修部
材を介して接続することとなり、地震や地盤沈下、或い
は重量車両の通行に伴う振動の影響は補修部材に伝えら
れ、接続部に於ける各ライニング材に支障を来すことが
ない。 【0026】特に、筒部及びサドル部に夫々に環状の止
水パッキンを設けることによって、各ライニング材の内
部に形成された流通路と取付管補修用ライニング材と取
付管との間に形成された間隙を遮断することが出来、こ
れにより、地下水が管渠内に浸入することを防止すると
共に下水の漏洩を防止することが出来る。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing a connecting portion of an installation pipe to a main pipe when the inner peripheral surface of a pipe installed underground is repaired by lining. The present invention relates to a method for lining an existing pipe main pipe and an attached pipe to solve the above problem. 2. Description of the Related Art For example, a sewer sewer has a main pipe laid underground and a mounting pipe connected to each home. The mounting pipe is connected to the main pipe via a socket. Or directly connected. Such sewers are subject to cracks, etc. in the mounting pipe or main pipe due to the aging of the main pipe or mounting pipe due to an increase in the number of years of use, or due to the effects of earthquakes, land subsidence, heavy vehicles, etc. There is a possibility that breakage will occur, earth and sand will flow into the main pipe, and water leakage will occur. For this reason, sewers are being repaired. [0003] As a method of repairing a sewer, various methods including an open-cut method and a non-cut-and-cut method are employed. Among them, the technique disclosed in Japanese Patent Publication No. 4-56738 discloses a method of repairing pipes to be repaired. A flexible hose containing a curable resin is introduced into the culvert, a gas flow is allowed to flow into the hose, and the hose is brought into close contact with the inner wall. In this state, a curing mechanism is introduced to cure the curable resin, and the curing is performed. The inner periphery of the pipe is lined with the hose. This technique is advantageous because the sewer can be repaired in an uncut state and the hardened hose has high strength. As a technique for repairing the inner peripheral surface of a main pipe or a mounting pipe constituting a sewer over the entire circumference, Japanese Patent Publication No. 6-98.
The technology of Japanese Patent Publication No. 682 is proposed. In this technique, the main pipe and the mounting pipe were subjected to water-stop treatment by inverting and inserting a so-called start liner made of a nonwoven fabric impregnated with a water blocking agent into the main pipe and the mounting pipe, respectively, and then the outer peripheral surface was coated with a film. A main pipe lining material obtained by impregnating a non-woven fabric with an uncured curable resin is invertedly inserted into the main pipe to perform lining of the main pipe, and thereafter, a film corresponding to at least the mounting pipe opening of the main pipe lining material. A part is removed, and a fitting part provided with a flange part, which comes into contact with the main pipe lining material of the flange part, is inserted into the mounting pipe from the main pipe side with a mounting pipe lining material made of a nonwoven fabric impregnated with an uncured curable resin. Then, the mounting pipe is lined, and thereafter, the curable resin impregnated in the corresponding contact portion is cured while the contact portion of the mounting pipe lining material flange is pressed against the inner peripheral surface of the main pipe lining material. hand A pipe liner bag and the mounting pipe liner is a tube lining method for bonding integrated. With this technology, the main pipe lining material and the mounting pipe lining material can be integrated. [0005] However, even the technique for repairing the connection between the main pipe and the branch pipe is not yet complete, and the pipes may be damaged by an earthquake, subsidence, or over the ground. When the vehicle is affected by vibrations caused by heavy vehicles, omnidirectional forces such as shearing force, tensile force, compressive force, etc. act on the joint between the main pipe lining material and the flange of the branch pipe lining material, and the connection is made. The parts may be separated. SUMMARY OF THE INVENTION An object of the present invention is to provide a reasonable repair method for a connecting portion between a main pipe and a mounting pipe which constitute a sewer. [0007] In order to solve the above-mentioned problems, a method for lining an existing pipe main pipe and an attached pipe according to the present invention comprises the steps of: A lining step for the main pipe in which a lining material for repairing main pipes containing a hardening resin is adhered and the lining material for repairing main pipes is cured, and for repairing a mounting pipe containing uncured curable resin on the inner peripheral surface of the mounting pipe. A lining method for an existing pipe main pipe and a mounting pipe including a step of lining the mounting pipe for bringing the lining material into close contact and curing the mounting pipe repair lining material, wherein a saddle portion along the inner peripheral surface of the main pipe is provided. A tubular portion protruding from the saddle portion and substantially along the inner peripheral surface of the mounting pipe, wherein the saddle portion and the tubular portion are integrally formed of a material containing an uncured curable resin and have an inner peripheral surface of the tubular portion. At least over the entire circumference of the cylinder A repair member having one annular watertight packing and having an annular watertight packing surrounding the entire circumference of the mounting pipe on the inner peripheral surface of the saddle portion is disposed at a connection portion of the mounting pipe with respect to the main pipe, and a cylindrical part is provided. Then, the saddle portion is brought into contact with the inner peripheral surface of the mounting pipe and the inner peripheral surface of the main pipe, respectively, and is hardened and attached.After that, the uncured main pipe repair lining material is placed in the main pipe with the repair member attached to the connection portion. At the same time, the saddle part of the repair member is brought into close contact with the inner peripheral surface of the main pipe, and then the lining material for repairing the main pipe is cured. Forming the lining,
Thereafter, an opening is formed at a portion corresponding to the mounting pipe of the main pipe lining, and further, the uncured mounting pipe repair lining material is coated on the inner peripheral surface of the mounting pipe and the inner peripheral surface of the cylindrical portion of the repairing member. And the diameter is expanded by air pressure so as to make close contact with the inner peripheral surface of the mounting pipe and the inner peripheral surface of the cylindrical portion of the repair member, and then the mounting pipe repair lining material is cured to form a mounting pipe lining. It is characterized by the following. In the above-mentioned method for lining an existing main pipe and a fitting pipe according to the present invention, the lining material for repairing the main pipe and the lining for repairing the fitting pipe are provided via a repair member disposed at a connection portion between the main pipe and the fitting pipe. Since the members are connected, it is not necessary to form a flange portion for connecting to the lining material for main pipe repair on the lining material for mounting pipe repair. For this reason, the lining material for mounting pipe repair can be used in the form of a sleeve, and even if an earthquake, land subsidence, or vibration due to the passage of heavy vehicles acts on the lining material, it may cause damage to the connection. Since the lining material for repairing the mounting pipe and the lining material for repairing the main pipe are not fixed and the flexibility is generated, there is no trouble in the connecting portion. In the lining method of the main pipe of the existing pipe and the mounting pipe according to the present invention, the repairing member having the annular watertight packing surrounding the entire circumference of the mounting pipe is used on the inner peripheral surface of the saddle portion. Water does not leak from the gap between the saddle portion of the repair member and the hardened lining material for repairing the main pipe. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a method for lining an existing pipe and an attached pipe (hereinafter, simply referred to as “main lining method”) according to the present invention will be described below with reference to the drawings. FIG. 1 shows the steps from the attachment of the repair member to the main pipe lining in the lining method, and FIG. 1 (a) is a view for explaining a state in which the repair member is arranged at the connection between the main pipe and the mounting pipe, and FIG. () Is a diagram illustrating a state in which the inner wall of the main pipe is lined with a lining material for main pipe repair.
FIG. 2 shows a step of forming an opening in the lining portion corresponding to the mounting pipe after the main pipe lining of the main lining method and then lining the mounting pipe, and (a) shows an opening in a portion of the main pipe lining corresponding to the mounting pipe. It is a figure explaining the state where (a) was formed, (b) is a figure explaining the state where the uncured lining material was inserted into the mounting pipe after forming the opening,
(C) bringing the lining material into close contact with the mounting pipe and hardening;
It is a figure which shows the state which cut | disconnected and removed the main pipe | tube side edge part of the mounting pipe lining according to the main pipe lining. 3A and 3B show a repair member used in the lining method, FIG. 3A shows a first example of the repair member, and FIG. 3B shows a second example of the repair member. FIGS. 4A and 4B show various examples of the packing, wherein FIG. 4A shows a packing having an elliptical cross section and a void having an elliptical cross section therein, and FIG. 4B shows a packing having an elliptical cross section and a groove therein. , (C) shows a packing having a square cross section and a kerf therein, (d) shows a packing having a rectangular cross section and an elliptical void therein, and (e) shows a packing having a rectangular cross section. (F) shows a packing having a triangular cross section and a kerf therein, and (g) shows a packing having a trapezoidal cross section and a kerf therein. The lining method will be described below in the order of steps. First, as shown in FIG. 1A, a repair member 4 is arranged at a connection portion 3 between the main pipe 1 and the mounting pipe 2. The mounting angle of the mounting pipe 2 with respect to the main pipe 1 is not necessarily unique, and often differs for each mounting pipe 2. For this reason, when repairing a sewer, first, data such as the position of the connecting part 3 formed on the main pipe 1 and the dimensions and angles of the mounting pipe 2 forming the connecting part 3 are collected by an in-pipe robot or the like. . Next, the repair material 4 will be described. FIG.
As shown in (a), the repair member 4 is composed of a saddle portion 4 a having an outer periphery along the inner peripheral surface of the main pipe 1 and a cylindrical portion 4 b having an outer periphery along the inner peripheral surface of the mounting tube 2. This repair member 4
Can be formed integrally with a portion corresponding to the saddle portion 4a and a portion corresponding to the cylindrical portion 4b by a nonwoven fabric or a woven fabric impregnated with an uncured curable resin like the lining material for repair. It is made of a flexible material, and at least one material is provided on the back side of the saddle portion 4a and on the inside of the cylindrical portion 4b.
The annular watertight packing 5 is attached via an adhesive. FIG. 3 (b) shows another example of the repair member 4, in which the saddle portion 4a has a cylindrical shape along the inner wall of the main pipe. The annular watertight packing 5 is made of a heat-resistant rubber such as neoprene (registered trademark) and has a cavity 9 or a cut groove therein.
It has 10 and is formed to be deformable. The cross-sectional shape of the annular waterproof packing is elliptical as shown in FIGS.
It can take a cross-sectional shape such as a square, a triangle, a trapezoid and the like. The above-mentioned repairing member 4 is attached to the outside of a tube-shaped member previously formed in a T-shape or a T-shape and provided with a radiation irradiation lamp therein, and is moved to a predetermined connecting portion 3. The saddle portion 4a and the cylindrical portion 4b of the repairing member 4 are brought into close contact with the inner peripheral surface of the main pipe 1 and the inner peripheral surface of the mounting pipe 2, respectively, by expanding the tubular member by applying air pressure. The material of the repairing member 4 is cured by irradiating the material to be attached to the target connecting portion 3 (see FIG. 1A). In this case, the repair member 4 is tightly fixed without being bonded to the contact surface with the main pipe 1 or the mounting pipe 2. As a technique for fixing such a repair member, for example, there is a “pipe inner surface repair device” disclosed in Japanese Patent Application Laid-Open No. 10-286877. After the repair member 4 is attached to the necessary connecting portion 3 in the main pipe 1, the main pipe 1 is lined. In this lining method, a main pipe repair lining material containing an uncured curable resin is inserted into the main pipe 1, and the main pipe repair lining material is expanded by applying air pressure to the inside of the main pipe repair lining material. To the inner peripheral surface of At this time, as shown in FIG. 1 (b), the repair member 4 arranged at the connecting portion 3 has its saddle portion 4a pressed against the inner peripheral surface of the main pipe 1 by the main pipe repair lining material 6. Can be By curing the lining material 6 for main pipe repair in this state, the inner peripheral surface of the main pipe 1 is repaired by the lining material 6 for main pipe repair. Therefore, the saddle portion 4 of the repair member 4
a firmly adheres to the main pipe repair lining material 6 and the inner peripheral surface of the main pipe 1. When the inner peripheral surface of the main pipe 1 is repaired as described above, the mounting pipe 2 is closed by the lining material 6 for repairing the main pipe. For this reason, after the lining, the main pipe repair lining material 6 that is closed for each mounting pipe 2 is pierced to form the opening 7. This opening operation is performed using a robot or the like having a cutter for drilling. Next, the mounting pipe 2 is repaired. In this repair, as shown in FIG. 2B, a lining material 8 for repairing the mounting pipe containing an uncured curable resin is inserted into the inside of the mounting pipe 2 and the lining material 8 for repairing the mounting pipe is inserted into the lining material 8. It is brought into close contact with the inner peripheral surface of the mounting pipe 2 by applying air pressure to expand the pipe. At this time, the repair member 4 arranged at the connection portion 3
The cylindrical portion 4b is pressed against the inner peripheral surface of the mounting pipe 2 by the lining material 8 for mounting pipe repair. After that, by stiffening the expanded lining material 8 for mounting pipe repair, the inner peripheral surface of the mounting pipe 2 is repaired by the hardened lining material 8 for mounting pipe repair. With the hardening of the mounting pipe repair lining material 8, the cylindrical portion 4 b of the repair member 4 firmly adheres to the mounting pipe repair lining material 8 and the inner peripheral surface of the mounting pipe 2. Next, as shown in FIG. 2 (c), the end of the lining material 8 for repairing the mounting pipe 2 in which the inner peripheral surface of the mounting pipe 2 has been repaired is formed by cutting or the like, so that the main pipe 1 and the main pipe 1 are formed. Mounting pipe 2
The lining for is ended. In the above configuration, at the connecting portion 3 between the main pipe 1 and the mounting pipe 2, the saddle portion 4a of the repair member 4 is in close contact with the inner peripheral surface of the main pipe 1, and the saddle portion 4a The pipe repair lining material 6 is hardened in close contact. The cylindrical portion 4b of the repair member 4 is in close contact with the inner peripheral surface of the mounting pipe 2,
The lining material 8 for attachment pipe repair is hardened in a state in which the lining material 8 for attachment pipe repair is in close contact with the cylindrical portion 4b. Therefore, the annular watertight packing 5 sandwiched between the cylindrical portion 4b and the lining material 8 for repairing the mounting pipe and the saddle portion 4b and the lining material 6 for repairing the main pipe are pressed by both to exhibit a sufficient water stopping function. However, even if groundwater or the like intrudes between the mounting pipe 2 and the mounting pipe repair lining material 8, the infiltrated groundwater or the like does not leak into the main pipe repair lining material 6. As described above, the lining members 6 and 8 are tightly hardened while maintaining the sleeve-like shape with respect to the saddle 4a and the cylindrical portion 4b of the repairing member 4, respectively. For this reason, a flange portion is formed on the mounting pipe lining material 8, or the lining materials 6, 8
Need not be integrated. For this reason, an unreasonable force does not act on each of the lining members 6, 8, and it is possible to maintain a stable strength. That is, a force in a complicated direction such as a shearing force, a tensile force or a compressive force acts on the connecting portion 3 between the main pipe 1 and the mounting pipe 2 due to an influence of an earthquake, land subsidence, or vibration caused by heavy vehicle traffic. Even in this case, due to these forces, the degree of adhesion between the saddle portion 4a of the repair member 4 and the lining material 6 for repairing the main pipe, and the degree of adhesion between the cylindrical portion 4b and the lining material 8 for repairing the mounting pipe are impaired. Therefore, the function as a sewer can be stably exhibited for a long period of time. Each of the lining materials 6, 8 may be an ultraviolet-curable lining material or a thermosetting lining material. The repair member 4 may be an ultraviolet-curing repair member or a thermosetting repair member. As described in detail above, in the lining method according to the present invention, the saddle portion along the inner peripheral surface of the main pipe and the mounting section of the mounting pipe are previously provided at the joint between the main pipe and the mounting pipe. A repair member having a cylindrical portion along the inner peripheral surface is arranged, and thereafter, the inner peripheral surface of the main pipe is repaired with the lining material for main pipe repair, and at the same time, connected to the saddle portion. This makes it possible to repair the inner peripheral surface of the mounting pipe and at the same time connect it to the cylindrical portion. For this reason, each lining material will be connected via a repair member, and the effect of the earthquake, land subsidence, or vibration accompanying heavy vehicle traffic will be transmitted to the repair member, which will hinder each lining material at the connection part. Never come. In particular, by providing annular watertight packings in the cylindrical portion and the saddle portion, respectively, the annular watertight packing is formed between the flow passage formed inside each lining material, the lining material for repairing the mounting tube, and the mounting tube. The gap can be blocked, whereby groundwater can be prevented from penetrating into the sewer and leakage of sewage can be prevented.
【図面の簡単な説明】 【図1】本ライニング方法の補修部材の取り付けから本
管ライニングまでの工程を説明する図である。 【図2】本ライニング方法の本管ライニング後取付管に
対応するライニング部分に開口を形成ししかる後取付管
にライニングする工程を説明する図である。 【図3】本ライニング方法に於いて用いる補修部材の例
を示す図である。 【図4】パッキンの様々な例を示す図である。 【符号の説明】 1 本管 2 取付管 3 接続部 4 補修部材 4a サドル部 4b 筒部 5 環状止水パッキン 6 本管補修用ライニング材 7 開口部 8 取付管補修用ライニング材
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view for explaining steps from attachment of a repair member to main pipe lining of the lining method. FIG. 2 is a view for explaining a step of forming an opening in a lining portion corresponding to the mounting pipe after the main pipe lining and then lining the mounting pipe in the lining method. FIG. 3 is a diagram showing an example of a repair member used in the lining method. FIG. 4 is a view showing various examples of packing. [Description of Signs] 1 Main pipe 2 Mounting pipe 3 Connection section 4 Repair member 4a Saddle section 4b Tube section 5 Annular waterproof packing 6 Main pipe repair lining material 7 Opening 8 Mounting pipe repair lining material

Claims (1)

  1. (57)【特許請求の範囲】 【請求項1】 既設管の本管の内周面に未硬化の硬化性
    樹脂を含む本管補修用ライニング材を密着させ、該本管
    補修用ライニング材を硬化させる本管に対するライニン
    グ工程と、取付管の内周面に未硬化の硬化性樹脂を含む
    取付管補修用ライニング材を密着させ、該取付管補修用
    ライニング材を硬化させる取付管のライニング工程とを
    含む既設管の本管及び取付管に対するライニング方法で
    あって、本管の内周面に沿うサドル部と該サドル部に突
    設され取付管の内周面に略沿う筒部とを備え、前記サド
    ル部と筒部とは未硬化の硬化性樹脂を含む材料によって
    一体成形され且つ筒部の内周面には該筒部の全周にわた
    って少なくとも1つの環状止水パッキンを備え、且つサ
    ドル部の内周面に取付管の全周を囲む環状止水パッキン
    を備えた補修部材を、本管に対する取付管の接続部に配
    置すると共に筒部及びサドル部を夫々取付管の内周面及
    び本管の内周面に接触させると共に硬化させて取り付
    け、その後、接続部に補修部材を取り付けた本管内に未
    硬化の本管補修用ライニング材を挿入すると共に空気圧
    により拡径して本管の内周面に密着させると同時に補修
    部材のサドル部を本管の内周面に密着させ、次いで、本
    管補修用ライニング材を硬化させて本管ライニングを形
    成し、その後、前記本管ライニングの取付管に対応する
    部位に開口部を形成し、更に、未硬化の取付管補修用ラ
    イニング材を取付管の内周面及び補修部材の筒部の内周
    面を被覆するように挿入すると共に空気圧により拡径し
    て取付管の内周面及び補修部材の筒部の内周面に密着さ
    せ、次いで前記取付管補修用ライニング材を硬化させて
    取付管ライニングを形成することを特徴とする既設管の
    本管及び取付管のライニング方法。
    (57) [Claims] [Claim 1] A main pipe repair lining material containing an uncured curable resin is brought into close contact with the inner peripheral surface of an existing pipe main pipe, and the main pipe repair lining material is provided. A lining step for the main pipe to be cured, and a lining step for a mounting pipe for hardening the mounting pipe repair lining material including an uncured curable resin on the inner peripheral surface of the mounting pipe, and curing the mounting pipe repair lining material. A lining method for the main pipe and the mounting pipe of the existing pipe, comprising a saddle portion along the inner peripheral surface of the main pipe, and a tubular portion protruding from the saddle portion and substantially along the inner peripheral surface of the mounting pipe, The saddle portion and the cylindrical portion are integrally formed of a material containing an uncured curable resin, and the inner peripheral surface of the cylindrical portion is provided with at least one annular watertight packing over the entire circumference of the cylindrical portion, and the saddle portion On the inner peripheral surface of the The repair member provided with the fitting is disposed at the connecting portion of the mounting pipe to the main pipe, and the cylindrical portion and the saddle portion are brought into contact with the inner peripheral surface of the mounting pipe and the inner peripheral surface of the main pipe, respectively, and are hardened and mounted. Insert the uncured lining material for repair of the main pipe into the main pipe with the repair member attached to the connection part, expand the diameter by pneumatic pressure and make it adhere to the inner peripheral surface of the main pipe, and at the same time, attach the saddle part of the repair member to the main pipe. Then, the main pipe repair lining material is cured to form a main pipe lining, and then an opening is formed at a portion corresponding to the mounting pipe of the main pipe lining. A hardened lining material for mounting pipe repair is inserted so as to cover the inner peripheral surface of the mounting pipe and the inner peripheral surface of the cylindrical portion of the repairing member, and is expanded by air pressure to expand the inner peripheral surface of the mounting pipe and the cylinder of the repairing member. To the inner peripheral surface of the part Lining method of the main pipe and the mounting tube of the existing pipe, characterized in that curing the urging pipe repair liner to form a mounting pipe lining.
JP2000088147A 2000-03-28 2000-03-28 Lining method of existing main pipe and mounting pipe Expired - Fee Related JP3466533B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000088147A JP3466533B2 (en) 2000-03-28 2000-03-28 Lining method of existing main pipe and mounting pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000088147A JP3466533B2 (en) 2000-03-28 2000-03-28 Lining method of existing main pipe and mounting pipe

Publications (2)

Publication Number Publication Date
JP2001269998A JP2001269998A (en) 2001-10-02
JP3466533B2 true JP3466533B2 (en) 2003-11-10

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4615756B2 (en) * 2001-04-05 2011-01-19 積水化学工業株式会社 Rehabilitation pipe inspection method
KR100926947B1 (en) * 2009-04-17 2009-11-17 유한회사 태양건설 Water pipeline repairing method of not-digging type
US10683959B2 (en) * 2017-10-17 2020-06-16 Lmk Technologies, Llc Method and apparatus for repairing a length of pipe or a main/lateral pipe junction

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