JP4824214B2 - Lining method using branch pipe lining material for repairing connection opening edge between main pipe and branch pipe - Google Patents

Lining method using branch pipe lining material for repairing connection opening edge between main pipe and branch pipe Download PDF

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Publication number
JP4824214B2
JP4824214B2 JP2001222159A JP2001222159A JP4824214B2 JP 4824214 B2 JP4824214 B2 JP 4824214B2 JP 2001222159 A JP2001222159 A JP 2001222159A JP 2001222159 A JP2001222159 A JP 2001222159A JP 4824214 B2 JP4824214 B2 JP 4824214B2
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Prior art keywords
pipe
branch pipe
main
liner
main pipe
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JP2003035394A (en
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久夫 三谷
克也 柴田
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Aquaintec Corp
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Aquaintec Corp
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/179Devices for covering leaks in pipes or hoses, e.g. hose-menders specially adapted for bends, branch units, branching pipes or the like

Description

【0001】
【発明の属する技術分野】
本発明は、下水道等において利用される本管と枝管との接続開口縁部を補修するための枝管ライニング材を用いたライニング方法に関する。
【0002】
【従来の技術】
従来から、例えば、図6に示すように、地中に配設された太径(例えば、口径約20cm)な土管等の本管1に細径(例えば、口径約15cm)な土管等の枝管2を接続管3を介して接続した下水道が知られている。
【0003】
この枝管2は一般家庭や路肩等に向かって延在され、その一般家庭からの下水や路肩等からの雨水を本管1に導くものである。
【0004】
また、この枝管2は本管1に比べて口径が狭いことから、全体的な直径も比較的細く、しかも、屈曲状態で本管1にまで導かれ、且つ、本管1よりも地表面寄りから地中に向かって導かれる等、亀裂が発生し易い上にその亀裂から下水が洩れ易いという問題が生じていた。
【0005】
そこで、枝管2の内壁面に熱硬化性樹脂からなるライニング管4を配置することが考えられている。尚、本管1の内壁面にも同様の材料からなるライニング管5を配置したものもある。以下、枝管内に配置されるライニング管を枝管ライナー、本管内に配置されるライニング管を本管ライナーと称して区別する。
【0006】
これら各ライナー4,5は、施工前は見掛け上の布製等からなり、例えば、表面側から水密生の高いアウターチューブ、ガラス繊維、ボリブチレンテレフタレート繊維等の多層構造となっている。
【0007】
このようなライナー4,5は、本管ライナー5側を先に挿入・反転・スチーム加熱によって本管1の内壁面に密着状態で硬化することで土管のような繋ぎ目の無い配管を実現した後、本管1及び本管ライナー5と枝管2との接続(分岐)部分の本管ライナー5を切除して開口を形成し、この状態から本管ライナー5と同様に枝管ライナー4を挿入・反転・スチーム加熱によって枝管2の内壁面に密着状態で硬化することで屈曲部分に皺等が発生しない配管を実現する。
【0008】
一方、このような本管ライナー5と枝管ライナー4との接続部分は、本管ライナー5に開口を切除形成したことから、隙が発生すると下水漏れが発生する虞がある。基本的には、本管1の上部寄りで接続することから、この接続部からの洩れの心配は殆ど発生しないが、隙の無いほうが好ましいことは勿論である。
【0009】
そこで、図5(A)に示すように、枝管ライナー4の端部に硬質樹脂の硬化物からなる硬質の鍔6を設け、図5(B)に示すように、この鍔6によって開口周縁と枝管ライナー4の端部とを覆うことで隙の発生を防止することが考えられている。
【0010】
【発明が解決しようとする課題】
ところで、上記の如く構成された枝管ライナー4にあっては、鍔6が硬質樹脂の硬化物から形成されていることから、接続部分に隙Pが発生し易いという問題が生じていた。
【0011】
これは、本管1の形状が、水平方向では直線状である一方、垂直方向では円形であることから、鍔6を予め開口周辺形状に近い反りを形成しなければならない。
【0012】
一方、鍔6を施工する際には、開口中心を中心として鍔6を回転させつつ本管1の内壁面形状(本管ライナー5の内壁面形状)に鍔6の形状を一致させなければならないが、厳密な一致を実現することは困難で、このズレによって隙Pが発生してしまうものである。
【0013】
本発明は、上記問題を解決するため、接続部分に隙が発生し難い鍔を有するライニング材による接続部構造を提供することを目的とする。
【0014】
【課題を解決するための手段】
その目的を達成するため、本願発明は、本管と枝管との接続開口縁部を補修するための枝管ライニング材を用いたライニング方法であって、
前記枝管ライニング材として、前記枝管内面に配置されるためのライナー本体と、該ライナー本体の前記本管側開口端部の周囲を取り巻くように設けられた鍔部とを備え、前記鍔部は、保形性を有するベースと、繊維材に熱硬化性樹脂を含浸させた樹脂吸収材料の層との多層構造に形成されるとともに、前記樹脂吸収材料の層は前記本管内面に密着する面側に配設されており、前記鍔部を前記枝管側へと押圧することにより前記樹脂吸収材料の層は前記本管内面に密着可能であることを特徴とする枝管ライニング材を用い、
前記鍔部を前記枝管側へと前記本管の内壁面形状に倣って押圧変形しつつ前記樹脂吸収材料の層に含浸された熱硬化性樹脂を前記本管と前記枝管との付け根部にある割れへと充填した後に硬化させるとともに、前記樹脂吸収材料の層を前記本管内面に密着させた状態で前記樹脂吸収材料の層に含浸された熱硬化性樹脂を硬化させることを特徴とするライニング方法である。
【0015】
本願発明によれば、鍔部は、保形性を有するベースと、繊維材に熱硬化性樹脂を含浸させた樹脂吸収材料の層との多層構造に形成されるとともに、前記樹脂吸収材料の層は前記本管内面に密着する面側に配設されおり、前記鍔部を前記枝管側へと押圧することにより前記鍔部は前記本管の内壁面形状に倣って押圧変形され、これにより前記樹脂吸収材料の層は前記本管内面に密着可能であることにより、鍔の保形性を維持し得ることにより施工が容易であることに加えて、施工後に隙の発生し難い枝管ライニング材とすることができる。
【0016】
ここで、前記ベースは、硬質樹脂材料から構成すれば、鍔の保形性が高く維持されて施工の容易性を維持したものでありながら、施工後に隙の発生し難いライニング材とすることができる。
【0017】
また、前記ベースは、軟質布材料から構成すれば、鍔の保形性をある程度維持して施工の容易性を維持したものでありながら、施工後に隙の発生しないライニング材とすることができる。
【0018】
また、前記ベースと前記樹脂吸収材料との間に前記ライナー本体の端部が挟持されている構成を採用することもできる。
【0019】
以上に記載のライニング材を用いることにより本管と枝管との接続開口縁部を補修することができる。
【0020】
また、以上に記載の枝管ライニング材を用い、前記鍔部を前記枝管側へと前記本管の内壁面形状に倣って押圧変形しつつ前記樹脂吸収材料の層に含浸された熱硬化性樹脂を前記本管と前記枝管との付け根部にある割れへと充填した後に硬化させるとともに、前記樹脂吸収材料の層を前記本管内面に密着させた状態で前記樹脂吸収材料の層に含浸された熱硬化性樹脂を硬化させるライニング方法を採用すれば、付け根部にある割れを補修するライニング方法であって、補修を容易且つ確実に行うことができる。
【0021】
これにより、本発明に従えば、接続部分に隙が発生しない鍔を有するライニング材の接続部構造を提供することができる。
【0022】
【発明の実施の形態】
次に、本発明のライニング材の実施の形態を図面に基づいて説明する。なお、見掛け上の全体構成は、図6に示したものと同様のため、全体構成の図は省略する。
【0023】
(実施の形態1)図1及び図2は、本発明のライニング材の実施形態1を示す。
【0024】
図1(A)において、10は枝管2(接続管3を含む)の内壁面に配管されるライニング材としての枝管ライナーである。ここでハット20(図1(A)参照)とは、鍔部12とその接続部付近に位置するライナー本体11とで構成される部位を示し、換言すれば、本管1と枝管2との接続部位周辺の付け根部分に対応する部位を示す。
【0025】
この枝管ライナー10は、図2に示すように、ライナー本体11と、このライナー本体11の端部に設けられた鍔部12とを備えている。
【0026】
ライナー本体11は、外表面側から熱硬化特性(又は光硬化特性)を有するアウターチューブと熱硬化性材料(又は光硬化性材料)を含浸させたフエルト等の繊維材との二層構造から構成され、施工時には全体的に軟性であり、スチームや温水等の加熱(又は光照射)によって膨張状態で硬化するものである。
【0027】
鍔部12は、熱硬化性樹脂を硬化させて本管1(又は本管ライナー5)の内壁面形状に一致する薄肉のベース13と、このベース13の本管1と密着する側の面に設けられると共に熱硬化性材料(熱硬化性樹脂)を含浸させたフエルト等の繊維材からなる樹脂吸収材料14とを備え、ベース13と樹脂吸収材料14との間にライナー本体11の端部が挟持されている。
【0028】
ベース13は、略円筒形状の保形部13aと、この保形部13aの縁部から側方に向かって屈曲されたフランジ状の鍔13bとを備え、保形部13aを本管1の開口(本管ライナー5の開口と一致)から枝管2の開口縁部(接続管3の開口縁部)に鍔部12を臨ませる際の位置決め部材を兼ねている。ライナー本体11と鍔13bとは別個に構成されている。このため、ライナー本体11の長さを現場の状態に合わせて自由に長くしたり短くしたりすることができる。
【0029】
このような構成において、枝管ライナー10は、本管1側から鍔部12を枝管2に臨ませた後、ライナー本体11を枝管2内に反転しつつ挿入した上で、スチーム若しくは温水により加熱硬化させることで枝管2の屈曲部分に皺が発生せず且つ枝管2の内壁面に密着するように膨張状態で硬化して配管が完了する。
【0030】
また、この加熱時には、鍔部12の樹脂吸収材料14が硬化することから、図1(B)に示すように、ベース13と本管ライナー5との間に隙を発生させること無く、しかも、ベース13と本管ライナー5との接着材としての役割を果たすことができる。
【0031】
この際、樹脂吸収材料14は、図示を略す反転加熱工具によって鍔部12を本管ライナー5側に圧接しつつ加熱することから、余剰材料が鍔13bの周縁部から外部にはみ出すと同時に、本管ライナー5と保形部13aとの間や、本管ライナー5と枝管2(接続管3)との間、さらには、枝管2(接続管3)と本管1との間等の微小な隙間にも入り込ませることができることから、接続部分全般のシール材並びに接着材としての機能を果たすことができる。
【0032】
また、鍔13bの周縁部から外部にはみ出した余剰の材料は、鍔13bと本管ライナー5との間を鍔13bの肉厚分をなだらかに吸収するかのように接続する。
【0033】
したがって、鍔部12を本管ライナー5の内壁面側に位置させた場合には、下水の流速によって鍔13bが捲れてしまうという不具合が解消される。尚、本管ライナー5が配管されていない場合には、本管1の内壁面に対して上述した相乗効果を発揮することができる。
【0034】
また、図示を略するが、鍔部12を本管ライナー5と本管1との間に位置させた場合には(本管ライナー5の配管が枝管ライナー10の配管よりも後になる)、本管ライナー5の開口付近が鍔13bの肉厚による急激な立ち上げ段差とならずになだらかに隆起し、下水の抵抗となり難くする上、本管ライナー5の外壁面と鍔部12との間に隙が発生しにくい構造とすることができる。
【0035】
(実施の形態2)図3及び図4は、本発明のライニング材の実施の形態2を示す。
【0036】
図3(A)において、20は枝管2の内壁面に配管されるライニング材としての枝管ライナーである。
【0037】
枝管ライナー20は、図4(A)に示すように、ライナー本体21と、このライナー本体21の端部に設けられた鍔部22とを備えている。
【0038】
ライナー本体21は、外表面側から熱硬化特性を有するアウターチューブと熱硬化性材料を含浸させたフエルト等の繊維材との二層構造から構成され、施工時には全体的に軟性であり、スチーム(又は温水)加熱によって膨張状態で硬化するものである。
【0039】
鍔部22は、フエルト等の比較的厚手な布製ベース23と、この布製ベース23の本管1と密着する側の面に設けられると共に熱硬化性材料を含浸させたフエルト等の繊維材からなる比較的薄手な樹脂吸収材料24とを備え、布製ベース23と樹脂吸収材料24との間にライナー本体21の端部が挟持されている。
【0040】
なお、布製ベース23と樹脂吸収材料24とライナー本体21の端部とは、縫製25によって接合されている。また、図4(B)に示すように、ライナー本体21の端部付近に円筒形状の硬質樹脂からなる保形部材26を設けることも可能である。
【0041】
このような構成において、枝管ライナー20は、本管1側から鍔部22を一致させた後、ライナー本体21を枝管2内に反転しつつ挿入した上で、スチーム若しくは温水により加熱硬化させることで枝管2の屈曲部分に皺が発生せず且つ枝管2の内壁面に密着するように膨張状態で硬化して配管が完了する。
【0042】
また、鍔部22は、全体が布製であることから、本管ライナー5の内壁面形状に対する倣い効果を備え、硬質樹脂の硬化物から形成された硬質の鍔6,13bのような位置決め作業(回転)を不要とすることができる。
【0043】
さらに、鍔部22の加熱時には、鍔部22の樹脂吸収材料24が硬化することから、図3(B)に示すように、ベース23と本管ライナー5との間に隙を発生させること無く、しかも、ベース23と本管ライナー5との接着材としての役割を果たすことができる。
【0044】
この際、樹脂吸収材料24は、図示を略す反転加熱工具によって鍔部22を本管ライナー5側に圧接しつつ加熱することから、余剰材料がベース23の周縁部から外部にはみ出すと同時に、本管ライナー5とライナー本体21との間、本管ライナー5と枝管2(接続管3)との間、さらには、枝管2(接続管3)と本管1との間等の微小な隙間にも入り込ませることができることから、接続部分全般のシール材並びに接着剤としての機能を果たすことができる。
【0045】
た、ベース23の周縁部から外部にはみ出した余剰の材料は、硬化時の収縮作用によりベース23と本管ライナー5との間をベース23の肉厚分をなだらかに吸収するかのように接続する。
【0046】
したがって、鍔部12を本管ライナー5の内壁面側に位置させた場合には、下水の流速によってベース23が捲れてしまうという不具合が解消される。尚、本管ライナー5が配管されていない場合には、本管1の内壁面に対して上述した相乗効果を発揮することができる。
【0047】
また、図示を略するが、鍔部22を本管ライナー5と本管1との間に位置させた場合には(本管ライナー5の配管が枝管ライナー20の配管よりも後になる)、本管ライナー5の開口付近がベース23の肉厚による急激な立ち上げ段差とならずになだらかに隆起し、下水の抵抗となり難くする上、本管ライナー5の外壁面と鍔部22との間に隙が発生しにくい構造とすることができる。
【0048】
ところで、上述したベース23を廃止して樹脂吸収材料24のみで鍔部22を構成することもできる。尚、この場合、樹脂吸収材料24の厚さは上述したベース23と略同等若しくはそれ以上に厚肉とするほうが強度確保の観点から好ましい。
【0049】
【発明の効果】
以上説明したように、本発明に従えば、接続部分に隙が発生しない鍔を有するライニング材の接続部構造を提供することができる。
【図面の簡単な説明】
【図1】本発明の実施の形態1に係わるライニング材を示し、(A)はライニング材の要部の斜視図、(B)は施工後のライニング材周辺部の断面図である。
【図2】同じく、ライニング材の要部の断面図である。
【図3】本発明の実施の形態2に係わるライニング材を示し、(A)はライニング材の要部の斜視図、(B)は施工後のライニング材周辺部の断面図である。
【図4】同じく、(A)ライニング材の要部の断面図、(B)はライニング材の変形例の要部の断面図である。
【図5】従来に係わるライニング材を示し、(A)はライニング材の要部の斜視図、(B)は施工後のライニング材周辺部の断面図である。
【図6】本管と枝管の接続関係を示す一部を破断した要部の斜視図である。
【符号の説明】
10…枝管ライナー(ライニング材)
11…ライナー本体
12…鍔部
13…ベース
14…樹脂吸収材料
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lining method using a branch pipe lining material for repairing a connection opening edge between a main pipe and a branch pipe used in a sewer or the like.
[0002]
[Prior art]
Conventionally, as shown in FIG. 6, for example, a main pipe 1 such as a large-diameter pipe (for example, a diameter of about 20 cm) disposed in the ground has a small-diameter (for example, a diameter of about 15 cm) branch such as a clay pipe. A sewer system in which a pipe 2 is connected via a connecting pipe 3 is known.
[0003]
The branch pipe 2 extends toward a general household or a road shoulder, and guides rainwater from the sewage or road shoulder from the general household to the main pipe 1.
[0004]
Further, since the branch pipe 2 has a narrower diameter than the main pipe 1, the overall diameter is relatively thin, and the branch pipe 2 is led to the main pipe 1 in a bent state, and moreover than the main pipe 1. There is a problem that cracks are easily generated and sewage is easily leaked from the cracks, such as being guided from the side toward the ground.
[0005]
Therefore, it is considered to arrange the lining pipe 4 made of a thermosetting resin on the inner wall surface of the branch pipe 2. In some cases, a lining pipe 5 made of the same material is disposed on the inner wall surface of the main pipe 1. Hereinafter, the lining pipe arranged in the branch pipe is called a branch pipe liner, and the lining pipe arranged in the main pipe is called a main pipe liner.
[0006]
Each of the liners 4 and 5 is made of an apparent cloth before construction, and has, for example, a multilayer structure such as an outer tube, glass fiber, and boricylene terephthalate fiber that are highly watertight from the surface side.
[0007]
Such liners 4 and 5 realize a seamless pipe like an earthen pipe by being hardened in close contact with the inner wall surface of the main pipe 1 by first inserting, inverting, and steam heating the main liner 5 side. after the connection between the main pipe 1 and the main pipe liner 5 and the branch pipe 2 (branch) by cutting the main pipe liner 5 parts to form an opening, the branch pipe liner 4 from this state in the same manner as the main pipe liner 5 By being hardened in close contact with the inner wall surface of the branch pipe 2 by insertion, inversion, and steam heating, a pipe that does not cause wrinkles or the like in the bent portion is realized.
[0008]
On the other hand, the connection portion between the main pipe liner 5 and the branch pipe liner 4 has an opening formed in the main pipe liner 5 so that there is a possibility that sewage leakage will occur if a gap occurs. Basically, since the connection is made near the upper part of the main pipe 1, there is hardly any fear of leakage from the connection part, but it is of course preferable that there is no gap.
[0009]
Therefore, as shown in FIG. 5 (A), the collar 6 of the rigid comprising the cured product of hard resin to an end portion of the branch pipe liner 4 is provided, as shown in FIG. 5 (B), the opening peripheral edge by the flange 6 It has been considered to prevent the generation of a gap by covering the end portion of the branch pipe liner 4.
[0010]
[Problems to be solved by the invention]
By the way, in the branch pipe liner 4 configured as described above, since the flange 6 is formed of a hard resin hardened material, there is a problem that a gap P is likely to be generated at the connection portion.
[0011]
This is because the shape of the main pipe 1 is linear in the horizontal direction but circular in the vertical direction.
[0012]
On the other hand, when constructing the eaves 6, the shape of the eaves 6 must match the inner wall surface shape of the main pipe 1 (inner wall surface shape of the main pipe liner 5) while rotating the eaves 6 around the opening center. However, it is difficult to realize exact matching, and this gap causes a gap P.
[0013]
The present invention for solving the above problems, and an object thereof is to provide a connection structure gap in the connection portion due to Lula innings material having a hard collar occurs.
[0014]
[Means for Solving the Problems]
In order to achieve the object, the present invention is a lining method using a branch pipe lining material for repairing a connection opening edge between a main pipe and a branch pipe,
As the lateral pipe lining material comprises a liner body for being disposed in the branch pipe inner surface, and a flange portion provided so as to surround the periphery of the main pipe opening end portion of the liner body, the collar portion Is formed in a multilayer structure of a base having shape retention and a layer of a resin absorbent material in which a fiber material is impregnated with a thermosetting resin , and the layer of the resin absorbent material is in close contact with the inner surface of the main pipe A branch pipe lining material is used, characterized in that the resin absorbent material layer can be brought into close contact with the inner surface of the main pipe by pressing the collar portion toward the branch pipe side. ,
The base portion between the main pipe and the branch pipe is made of a thermosetting resin impregnated in the layer of the resin absorbing material while pressing and deforming the collar portion toward the branch pipe in accordance with the inner wall surface shape of the main pipe. And curing the thermosetting resin impregnated in the resin absorbent material layer in a state where the resin absorbent material layer is in close contact with the inner surface of the main pipe. It is a lining method .
[0015]
According to the present invention, the collar portion is formed in a multilayer structure of a base having shape retention and a layer of a resin absorbing material in which a fiber material is impregnated with a thermosetting resin , and the layer of the resin absorbing material Is arranged on the surface side that is in close contact with the inner surface of the main pipe, and by pressing the flange portion toward the side of the branch tube, the flange portion is pressed and deformed following the shape of the inner wall surface of the main tube. by a layer of the resin-absorbent material can be in close contact with the main inner surface, in addition to the construction by capable of maintaining the shape retention of the flange is easy, hardly occurs lateral pipe lining gap after installation It can be a material.
[0016]
Here, if the base is made of a hard resin material, the shape retaining property of the ridge is maintained at a high level and the ease of construction is maintained. it can.
[0017]
Moreover, if the said base is comprised from a soft cloth material, it can be set as the lining material which does not generate a gap after construction, maintaining the shape-retaining property of the heel to some extent and maintaining the ease of construction.
[0018]
Moreover, the structure by which the edge part of the said liner main body is clamped between the said base and the said resin absorption material is also employable.
[0019]
By using the lining material described above, the connection opening edge between the main pipe and the branch pipe can be repaired.
[0020]
In addition, using the above-described branch pipe lining material, the thermosetting impregnated in the layer of the resin absorbent material while pressing and deforming the collar portion toward the branch pipe according to the inner wall surface shape of the main pipe The resin- absorbing material layer is impregnated in a state in which the resin-absorbing material layer is in close contact with the inner surface of the main pipe while the resin is filled into a crack at the base of the main pipe and the branch pipe and then cured. If a lining method for curing the thermosetting resin is employed, it is a lining method for repairing a crack at the base, and the repair can be easily and reliably performed.
[0021]
Thereby, according to this invention, the connection part structure of the lining material which has the wrinkles which a clearance gap does not generate | occur | produce in a connection part can be provided.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the lining material of the present invention will be described based on the drawings. The apparent overall configuration is the same as that shown in FIG. 6, and thus the overall configuration is omitted.
[0023]
(Embodiment 1) FIGS. 1 and 2 show Embodiment 1 of the lining material of the present invention.
[0024]
In FIG. 1A, reference numeral 10 denotes a branch pipe liner as a lining material piped on the inner wall surface of the branch pipe 2 (including the connection pipe 3). Here, the hat 20 (see FIG. 1 (A)) indicates a portion constituted by the collar portion 12 and the liner main body 11 located in the vicinity of the connecting portion, in other words, the main pipe 1 and the branch pipe 2. The site | part corresponding to the root part around the connection site of is shown.
[0025]
As shown in FIG. 2, the branch pipe liner 10 includes a liner main body 11 and a flange portion 12 provided at an end portion of the liner main body 11.
[0026]
The liner body 11 is composed of a two-layer structure of an outer tube having thermosetting properties (or photocuring properties) from the outer surface side and a fiber material such as felt impregnated with a thermosetting material (or photocurable material). It is generally soft at the time of construction and is cured in an expanded state by heating (or light irradiation) such as steam or hot water.
[0027]
The flange portion 12 is formed on the surface of the base 13 on which the thermosetting resin is cured to match the inner wall surface shape of the main pipe 1 (or main pipe liner 5) and the base 13 is in close contact with the main pipe 1. And a resin absorbent material 14 made of a fiber material such as felt impregnated with a thermosetting material (thermosetting resin) , and an end portion of the liner main body 11 is interposed between the base 13 and the resin absorbent material 14. It is pinched.
[0028]
The base 13 includes a substantially cylindrical shape-retaining portion 13a and a flange-shaped flange 13b bent sideways from the edge of the shape-retaining portion 13a. It also serves as a positioning member for allowing the flange 12 to face the opening edge of the branch pipe 2 (the opening edge of the connecting pipe 3) from the same as the opening of the main liner 5. The liner body 11 and the flange 13b are configured separately. Therefore, Ru can be or shorter free long to fit the length of the liner body 11 to the state of the site.
[0029]
In such a configuration, the branch pipe liner 10 has the flange 12 facing the branch pipe 2 from the main pipe 1 side, and then the liner body 11 is inserted into the branch pipe 2 while being inverted, and then steam or hot water is added. By heating and curing, the pipe is completed by hardening in an expanded state so that no wrinkles are generated in the bent portion of the branch pipe 2 and the inner wall surface of the branch pipe 2 is in close contact.
[0030]
Further, during this heating, the resin absorbent material 14 of the collar portion 12 is cured, so that no gap is generated between the base 13 and the main liner 5 as shown in FIG. It can serve as an adhesive between the base 13 and the main liner 5.
[0031]
At this time, at the same time the resin absorbent material 14, since the heating while pressing the flange portion 12 to the main pipe liner 5 side by reversing the heating tool illustration is omitted, the excess material protrudes to the outside from the peripheral portion of the flange 13b, the Between the pipe liner 5 and the shape retaining portion 13a, between the main pipe liner 5 and the branch pipe 2 (connection pipe 3), and further between the branch pipe 2 (connection pipe 3) and the main pipe 1 Since it can enter even a minute gap, it can serve as a sealing material and an adhesive for the entire connecting portion.
[0032]
Further, the surplus material that protrudes from the peripheral edge of the flange 13b is connected between the flange 13b and the main liner 5 as if the wall thickness of the flange 13b is absorbed gently.
[0033]
Therefore, when the flange portion 12 is positioned on the inner wall surface side of the main liner 5, the problem that the flange 13b is drowned by the flow rate of sewage is solved. When the main liner 5 is not piped, the above-described synergistic effect can be exerted on the inner wall surface of the main pipe 1.
[0034]
Although not shown in the drawings, when the collar portion 12 is positioned between the main liner 5 and the main pipe 1 (the main liner 5 pipe is behind the branch pipe 10 pipe), The vicinity of the opening of the main liner 5 rises gently without becoming a sudden rise step due to the thickness of the flange 13b, making it difficult to become resistance to sewage, and between the outer wall surface of the main liner 5 and the flange 12 It is possible to make a structure in which gaps are unlikely to occur.
[0035]
(Embodiment 2) FIGS. 3 and 4 show Embodiment 2 of the lining material of the present invention.
[0036]
In FIG. 3A, reference numeral 20 denotes a branch pipe liner as a lining material piped on the inner wall surface of the branch pipe 2 .
[0037]
As shown in FIG. 4A, the branch pipe liner 20 includes a liner main body 21 and a flange 22 provided at the end of the liner main body 21.
[0038]
The liner main body 21 is composed of a two-layer structure of an outer tube having thermosetting properties from the outer surface side and a fiber material such as felt impregnated with a thermosetting material. (Or warm water) is cured in an expanded state by heating.
[0039]
The collar portion 22 is made of a relatively thick cloth base 23 such as felt and a fiber material such as felt provided on the surface of the cloth base 23 on the side in close contact with the main pipe 1 and impregnated with a thermosetting material. A relatively thin resin absorbent material 24 is provided, and an end portion of the liner main body 21 is sandwiched between the cloth base 23 and the resin absorbent material 24.
[0040]
The cloth base 23, the resin absorbent material 24, and the end of the liner body 21 are joined by sewing 25. As shown in FIG. 4B, a shape-retaining member 26 made of a cylindrical hard resin can be provided in the vicinity of the end of the liner main body 21.
[0041]
In such a configuration, the branch pipe liner 20 is made to heat and harden with steam or hot water after aligning the collar part 22 from the main pipe 1 side and then inserting the liner body 21 into the branch pipe 2 while being inverted. As a result, the pipe is completed by hardening in an expanded state so that no wrinkles are generated in the bent portion of the branch pipe 2 and the inner wall surface of the branch pipe 2 is in close contact.
[0042]
Further, since the collar portion 22 is entirely made of cloth, it has a copying effect on the inner wall surface shape of the main liner 5 and is positioned like the rigid collars 6 and 13b formed of a hard resin cured product ( Rotation) can be eliminated.
[0043]
Further, since the resin absorbent material 24 of the flange portion 22 is cured when the flange portion 22 is heated, no gap is generated between the base 23 and the main liner 5 as shown in FIG. Moreover, it can serve as an adhesive between the base 23 and the main liner 5.
[0044]
At this time, at the same time the resin absorbent material 24, since the heating while pressing the flange portion 22 to the main pipe liner 5 side by reversing the heating tool illustration is omitted, the excess material protrudes to the outside from the peripheral portion of the base 23, the Between the pipe liner 5 and the liner body 21, between the main pipe liner 5 and the branch pipe 2 (connection pipe 3), and between the branch pipe 2 (connection pipe 3) and the main pipe 1, etc. Since it can also enter into the gap, it can serve as a sealing material and an adhesive for the entire connecting portion.
[0045]
Also, surplus material protruding to the outside from the periphery of the base over the scan 23, the contraction action during curing or gently absorb the thickness portion of the base 23 between the base 23 and the main pipe liner 5 Connect as follows.
[0046]
Therefore, when the collar portion 12 is positioned on the inner wall surface side of the main liner 5, the problem that the base 23 is drowned by the flow rate of sewage is solved. When the main liner 5 is not piped, the above-described synergistic effect can be exerted on the inner wall surface of the main pipe 1.
[0047]
Although not shown, when the collar portion 22 is positioned between the main liner 5 and the main pipe 1 (the main liner 5 is behind the branch liner 20), The vicinity of the opening of the main liner 5 does not become a sudden rise step due to the wall thickness of the base 23, and rises gently, making it difficult to resist sewage, and between the outer wall surface of the main liner 5 and the flange 22. It is possible to make a structure in which gaps are unlikely to occur.
[0048]
By the way, the base 23 mentioned above can be abolished and the collar part 22 can also be comprised only with the resin absorption material 24. FIG. In this case, it is preferable that the thickness of the resin absorbent material 24 is substantially equal to or greater than that of the above-described base 23 from the viewpoint of securing strength.
[0049]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a connecting portion structure of a lining material having a ridge that does not generate a gap in the connecting portion.
[Brief description of the drawings]
1A and 1B show a lining material according to Embodiment 1 of the present invention, in which FIG. 1A is a perspective view of a main part of the lining material, and FIG. 1B is a cross-sectional view of a peripheral part of the lining material after construction.
FIG. 2 is a cross-sectional view of the main part of the lining material.
3A and 3B show a lining material according to Embodiment 2 of the present invention, in which FIG. 3A is a perspective view of a main part of the lining material, and FIG. 3B is a cross-sectional view of a peripheral portion of the lining material after construction.
4A is a cross-sectional view of a main part of a lining material, and FIG. 4B is a cross-sectional view of a main part of a modified example of the lining material.
5A and 5B show a lining material according to the related art, in which FIG. 5A is a perspective view of a main part of the lining material, and FIG. 5B is a cross-sectional view of a peripheral portion of the lining material after construction.
FIG. 6 is a perspective view of a principal part, with a part broken away, showing a connection relationship between a main pipe and a branch pipe.
[Explanation of symbols]
10 ... Branch pipe liner (lining material)
11 ... liner body 12 ... buttock 13 ... base 14 ... resin absorbent material

Claims (1)

本管と枝管との接続開口縁部を補修するための枝管ライニング材を用いたライニング方法であって、
前記枝管ライニング材として、前記枝管内面に配置されるためのライナー本体と、該ライナー本体の前記本管側開口端部の周囲を取り巻くように設けられた鍔部とを備え、
前記鍔部は、保形性を有するベースと、繊維材に熱硬化性樹脂を含浸させた樹脂吸収材料の層との多層構造に形成されるとともに、前記樹脂吸収材料の層は前記本管内面に密着する面側に配設されており、
前記鍔部を前記枝管側へと押圧することにより前記樹脂吸収材料の層は前記本管内面に密着可能であることを特徴とする枝管ライニング材を用い、
前記鍔部を前記枝管側へと前記本管の内壁面形状に倣って押圧変形しつつ前記樹脂吸収材料の層に含浸された熱硬化性樹脂を前記本管と前記枝管との付け根部にある割れへと充填した後に硬化させるとともに、前記樹脂吸収材料の層を前記本管内面に密着させた状態で前記樹脂吸収材料の層に含浸された熱硬化性樹脂を硬化させることを特徴とするライニング方法。
A lining method using a branch pipe lining material for repairing a connection opening edge of a main pipe and a branch pipe ,
As the branch pipe lining material, provided with a liner main body to be arranged on the inner surface of the branch pipe, and a flange provided so as to surround the main pipe side opening end of the liner main body,
The collar portion is formed in a multilayer structure of a base having shape retention and a layer of a resin absorbent material in which a fiber material is impregnated with a thermosetting resin, and the layer of the resin absorbent material is an inner surface of the main pipe It is arranged on the surface side that adheres to the
Using a branch pipe lining material characterized in that the layer of the resin absorbent material can be in close contact with the inner surface of the main pipe by pressing the collar portion toward the branch pipe side,
The base portion between the main pipe and the branch pipe is made of a thermosetting resin impregnated in the layer of the resin absorbing material while pressing and deforming the collar portion toward the branch pipe in accordance with the inner wall surface shape of the main pipe. And curing the thermosetting resin impregnated in the resin absorbent material layer in a state where the resin absorbent material layer is in close contact with the inner surface of the main pipe. Lining method to do.
JP2001222159A 2001-07-23 2001-07-23 Lining method using branch pipe lining material for repairing connection opening edge between main pipe and branch pipe Expired - Lifetime JP4824214B2 (en)

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JP2005205767A (en) * 2004-01-23 2005-08-04 Kfc Ltd Lining material and joining structure of lining material
JP4666599B2 (en) * 2005-05-09 2011-04-06 旭テック環境ソリューション株式会社 Repair material and pull-in repair method using it
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US8590575B2 (en) * 2009-03-27 2013-11-26 Perma-Liner Industries, Llc Scrim-enforced pipe liner
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