JP2003236932A - Method for lining tube - Google Patents
Method for lining tubeInfo
- Publication number
- JP2003236932A JP2003236932A JP2002036717A JP2002036717A JP2003236932A JP 2003236932 A JP2003236932 A JP 2003236932A JP 2002036717 A JP2002036717 A JP 2002036717A JP 2002036717 A JP2002036717 A JP 2002036717A JP 2003236932 A JP2003236932 A JP 2003236932A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- lining material
- pipe lining
- air
- tube
- 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
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、老朽化した管路の
内壁にライニングを施してこれを補修する管ライニング
工法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe lining method in which an inner wall of an aged pipe is lined and repaired.
【０００２】[0002]
【従来の技術】地中に埋設された下水道管その他の管路
が老朽化した場合、それら管路を掘り出すことなくその
内壁に硬質被膜を形成して補修する工法が既に知られ、
実用に供されている。2. Description of the Related Art When sewer pipes and other pipelines buried in the ground are deteriorated, there is already known a method of forming a hard coating on the inner wall of the pipelines without excavating the pipelines for repair.
It is put to practical use.
【０００３】その種の管ライニング工法は、外周面が高
気密性のプラスチックフィルムで被覆された管状の樹脂
吸収材に熱硬化性樹脂を含浸せしめて成る管ライニング
材を用い、この管ライニング材を水や空気による流体圧
で管路中に反転挿入した後、これを流体圧で管路の内壁
に押し付けたまま、その流体を温水に置換するなどして
樹脂吸収材に含浸された熱硬化性樹脂を硬化させ、以て
管路の内壁に管ライニング材による硬質被膜を形成する
ものである。The pipe lining method of that type uses a pipe lining material obtained by impregnating a thermosetting resin into a tubular resin absorbent material whose outer peripheral surface is covered with a highly airtight plastic film. Thermosetting that is impregnated in the resin absorbent material by inserting it upside down into the pipeline with fluid pressure of water or air and then pressing the fluid against the inner wall of the pipeline while replacing the fluid with warm water. The resin is hardened to form a hard coating of the pipe lining material on the inner wall of the pipe.
【０００４】ここで、管路内に挿入された管ライニング
材を加熱する熱媒として、温水のほか、加熱蒸気や熱風
などを用いることが提案されているが、熱硬化性樹脂は
加熱時にそれ自体が硬化発熱し、その発熱量が過剰に大
きくなることに起因して熱劣化や硬化の不均一といった
弊害を生ずる。よって、熱硬化性樹脂の硬化発熱を抑制
することが望ましいが、加熱蒸気や熱風では十分な抑制
効果を得られない。Here, it has been proposed to use hot water, heated steam, hot air or the like as a heat medium for heating the pipe lining material inserted in the pipe line. The heat itself is generated by curing, and the heat generation amount becomes excessively large, which causes adverse effects such as thermal deterioration and uneven curing. Therefore, it is desirable to suppress the heat of curing of the thermosetting resin, but heating steam or hot air cannot provide a sufficient suppression effect.
【０００５】よって、管ライニング材の加熱には温水が
一般に広く利用され、特に好ましくは管ライニング材の
内部を温水で満たした状態で管ライニング材の加熱が行
われる。これによれば、温水によって熱硬化性樹脂を硬
化させる足る十分な温度で加熱しながら、熱硬化性樹脂
の発熱を抑制して、その熱劣化、硬化不均一、過熱によ
る変色、並びに施工面の荒れなどを防止することができ
る。Therefore, hot water is generally widely used for heating the pipe lining material, and particularly preferably, the pipe lining material is heated with the inside of the pipe lining material being filled with hot water. According to this, while heating at a sufficient temperature to cure the thermosetting resin with hot water, heat generation of the thermosetting resin is suppressed, its thermal deterioration, uneven curing, discoloration due to overheating, and Roughness can be prevented.
【０００６】[0006]
【発明が解決しようとする課題】然し乍ら、管ライニン
グ材を水圧で管路内に反転挿入するとき、その内部に外
気が取り込まれてしまうことがある。又、反転に利用し
た水を循環させて温水に置換するときなどに、管ライニ
ング材に供給する温水に気泡が混入してしまうことがあ
る。この結果、管路内に挿入した管ライニング材の上部
に空気溜まりが生じ、その状態のまま管ライニング材の
加熱が行われることによって、空気溜まりの部分に熱硬
化性樹脂の過剰発熱に起因する変色、肌荒れ、脆化など
が発生するという問題があった。However, when the pipe lining material is reversely inserted into the pipe line by hydraulic pressure, the outside air may be taken into the inside thereof. Moreover, when circulating the water used for inversion and replacing it with warm water, bubbles may be mixed in the warm water supplied to the pipe lining material. As a result, air is generated in the upper portion of the pipe lining material inserted into the pipe, and the pipe lining material is heated in that state, resulting in excessive heat generation of the thermosetting resin in the air reservoir. There has been a problem that discoloration, rough skin, and embrittlement occur.
【０００７】尚、管ライニング材の反転端は温水が漏れ
出さぬよう密閉されるので、管ライニング材を管路の下
流から上流に向けて反転挿入すると、その内部に入り込
んだ空気の逃げ場は完全に失われてしまう。このため、
管ライニング材は一般に管路の上流から下流に向けて反
転挿入される（管ライニング材内に作用する水圧を増大
させる目的もある）が、管路の上流（管ライニング材の
挿入側）では、図６のように管ライニング材Ｌが内圧を
受けて管路Ｐの外側で膨張し、ここに空気溜まりを発生
する。そして、その空気は口金Ｎを通じて地上に排出さ
れることなく管路Ｐの内部まで徐々に進行し、施工不良
を惹起する原因体として上流域に最後まで残存する。Since the inversion end of the pipe lining material is hermetically sealed so that hot water does not leak out, when the pipe lining material is inverted and inserted from the downstream side to the upstream side of the pipe line, the escape area for the air that has entered inside is completely removed. Will be lost to. For this reason,
The pipe lining material is generally inverted and inserted from the upstream side to the downstream side of the pipeline (also for the purpose of increasing the water pressure acting in the pipe lining material), but upstream of the pipeline (the insertion side of the pipe lining material), As shown in FIG. 6, the pipe lining material L receives the internal pressure and expands outside the pipe line P, and an air pool is generated there. Then, the air gradually advances to the inside of the pipe P without being discharged to the ground through the mouthpiece N, and remains in the upstream region to the end as a cause for causing the defective construction.
【０００８】本発明は以上のような事情に鑑みて成され
たものであり、その目的は管路に挿入した管ライニング
材を好適に加熱して管路の内壁に良質なライニング層を
形成することにある。The present invention has been made in view of the above circumstances, and an object thereof is to suitably heat a pipe lining material inserted in a pipe to form a good quality lining layer on the inner wall of the pipe. Especially.
【０００９】[0009]
【課題を解決するための手段】本発明は上記の目的を達
成するため、管状の樹脂吸収材に熱硬化性樹脂を含浸せ
しめて成る管ライニング材を管路内に挿入し、その管ラ
イニング材を管路の内壁に押圧した状態で該管ライニン
グ材をその内部に供給される温水により加熱して前記熱
硬化性樹脂を硬化させるようにした管ライニング工法に
おいて、管ライニング材を管路内に挿入する前に該管ラ
イニング材にエア抜き管を取り付けておき、そのエア抜
き管が管ライニング材の内部上方に位置するようにして
該管ライニング材を管路内に挿入した後、その管ライニ
ング材とこれを管路の内壁に押圧する水又は温水との間
に溜まった空気を前記エア抜き管を通じて外部に排出す
ることを特徴とする。In order to achieve the above-mentioned object, the present invention inserts a pipe lining material obtained by impregnating a tubular resin absorbent material with a thermosetting resin into a pipe line, and then the pipe lining material. In the pipe lining construction method, in which the thermosetting resin is cured by heating the pipe lining material with hot water supplied to the pipe lining material while pressing the pipe lining material in the pipe line, Before inserting, attach an air vent pipe to the pipe lining material, insert the pipe lining material into the pipe line so that the air vent pipe is located above the inside of the pipe lining material, and then the pipe lining The air accumulated between the material and the water or hot water that presses the material against the inner wall of the pipe is discharged to the outside through the air vent pipe.
【００１０】特に、エア抜き管の一端側を管ライニング
材の外表面に蛇行状にして取り付け、その管ライニング
材をエア抜き管の取り付け部分を上向きにして管路内に
反転挿入することを特徴とする。In particular, one end of the air bleeding pipe is attached to the outer surface of the pipe lining material in a meandering manner, and the pipe lining material is inverted and inserted into the pipe line with the attachment portion of the air bleeding pipe facing upward. And
【００１１】又、エア抜き管として、管ライニング材に
取り付けられる一端側外周に所定の長さ範囲に亙って複
数の吸気口を穿設したものを用いることを特徴とする。Further, the air bleeding pipe is characterized in that a plurality of air intake ports are formed in a predetermined length range on the outer periphery of one end attached to the pipe lining material.
【００１２】[0012]
【発明の実施の形態】以下、本発明の適用例を図面に基
づいて詳細に説明する。先ず、図１は本発明に係る管ラ
イニング材を部分的に破断して示した斜視図である。こ
の管ライニング材１は、下水道などの管路の内側をライ
ニングするのに用いるものであり、その一端は開口部１
Ａとして開口され、他の一端はこれを管路内へ反転挿入
するための流体が漏れ出さぬよう封止部１Ｂとして密閉
されている。ここで、２は液状の熱硬化性樹脂が含浸さ
れる繊維質の樹脂吸収材であり、この樹脂吸収材２はポ
リエステル、ポリエチレン、ポリプロピレン、ポリウレ
タン、アクリル、ナイロン、ビニロン、レーヨン、ガラ
ス、カーボン、又は綿などの繊維をシート状に接着させ
て成る不織布、若しくはシート状の布帛を素材とし、そ
の種のシート状素材の両端縁を縫合して管状に形成する
か、あるいは上記のような繊維をエクストルーダなどの
押出機を用いて押し出すことによりシームレスの管状に
一体に形成される。そして、この樹脂吸収材２には、不
飽和ポリエステル樹脂、エポキシ樹脂、又はウレタン樹
脂といった液状を保った未硬化の熱硬化性樹脂が含浸さ
れている。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, application examples of the present invention will be described in detail with reference to the drawings. First, FIG. 1 is a perspective view showing a pipe lining material according to the present invention partially broken away. This pipe lining material 1 is used for lining the inside of a pipeline such as a sewer, and one end thereof has an opening 1
It is opened as A, and the other end is sealed as a sealing portion 1B so that the fluid for inverting and inserting this into the conduit does not leak out. Here, 2 is a fibrous resin absorbent material impregnated with a liquid thermosetting resin, and the resin absorbent material 2 is polyester, polyethylene, polypropylene, polyurethane, acrylic, nylon, vinylon, rayon, glass, carbon, Alternatively, a nonwoven fabric formed by adhering fibers such as cotton in a sheet shape or a sheet-like cloth is used as a material, and both end edges of the sheet-like material of that kind are sewn into a tubular shape, or the above-mentioned fiber is used. It is integrally formed into a seamless tubular shape by extruding it using an extruder such as an extruder. The resin absorbent 2 is impregnated with an uncured thermosetting resin such as an unsaturated polyester resin, an epoxy resin, or a urethane resin which is kept in a liquid state.
【００１３】一方、３は樹脂吸収材２の外周面を被覆す
る高気密性のプラスチックフィルムであり、このプラス
チックフィルム３はインフレーション法により樹脂吸収
材２の外径と同等ないしは其れよりも稍大きい口径の管
状とされるか、あるいはシート状のものを樹脂吸収材２
の外周に巻き付けた後その側縁部をヒートシールするな
どして管状とされる。尚、プラスチックフィルム３はポ
リエチレン、ポリ塩化ビニル、又はポリウレタンなどの
熱可塑性樹脂による単層構造としても良いが、此れを二
層又は三層構造とすることが望ましい。例えば、二層構
造として、内側をポリエチレン層、外側をナイロン層と
したものがあり、三層構造としては中間をナイロン層と
し、内外をポリエチレン層としたものがある。又、プラ
スチックフィルム３は樹脂吸収材２の外周面に溶着され
るが、これを溶着せずして剥離可能に設けてもよい。On the other hand, 3 is a highly airtight plastic film that covers the outer peripheral surface of the resin absorbent material 2. This plastic film 3 is equal to or slightly larger than the outer diameter of the resin absorbent material 2 by the inflation method. A resin absorbent material 2 that is tubular or has a sheet shape
After being wrapped around the outer periphery of the, the side edges are heat-sealed to form a tubular shape. The plastic film 3 may have a single-layer structure made of a thermoplastic resin such as polyethylene, polyvinyl chloride, or polyurethane, but it is preferable that this has a two-layer or three-layer structure. For example, a two-layer structure includes a polyethylene layer on the inside and a nylon layer on the outside, and a three-layer structure includes a nylon layer on the middle and a polyethylene layer on the inside and outside. Further, although the plastic film 3 is welded to the outer peripheral surface of the resin absorbent 2, it may be detachably provided without being welded.
【００１４】ここで、管ライニング材１には、その外表
面に沿って延びるエア抜き管４が取り付けられる。この
エア抜き管４は、軟質樹脂やゴムなどの可撓性を有した
細長いホースで成り、これは粘着テープなどの固定部材
５により管ライニング材１の外表面に部分的に仮止めさ
れる。又、エア抜き管４は、その一端側が固定部材５に
よる固定部４Ａとして管ライニング材における開口部１
Ａ側の所定区間に取り付けられ、他の一端側は所定長さ
の延長部４Ｂとして管ライニング１に固定せずに開口部
１Ａ側へ延ばし出される。特に、固定部４Ａは管ライニ
ング材１の軸線を中心として該管ライニング材の外表面
に蛇行状に取り付けられる。この場合、樹脂吸収材２に
形成される継ぎ目６を中心として蛇行させると良い。
又、固定部４Ａの外周には、その長さ範囲に亙って複数
の吸気口７が所定の間隔で穿設される。尚、エア抜き管
４（固定部４Ａ）は、その一端側を管ライニング材の開
口部１Ａ側のみならず、その全長に亙って敷設しても良
い。Here, the pipe lining material 1 is provided with an air vent pipe 4 extending along the outer surface thereof. The air bleeding pipe 4 is made of a flexible elongated hose such as soft resin or rubber, which is partially temporarily fixed to the outer surface of the pipe lining material 1 by a fixing member 5 such as an adhesive tape. Further, one end of the air bleeding pipe 4 serves as a fixing portion 4A by the fixing member 5 and the opening portion 1 in the pipe lining material.
It is attached to a predetermined section on the A side, and the other end side is extended to the opening 1A side without being fixed to the pipe lining 1 as an extension 4B having a predetermined length. Particularly, the fixing portion 4A is attached to the outer surface of the pipe lining material 1 in a meandering manner around the axis of the pipe lining material 1. In this case, it is preferable that the joint 6 formed in the resin absorbent 2 is meandered.
Further, a plurality of intake ports 7 are formed at a predetermined interval on the outer circumference of the fixed portion 4A over the length range thereof. The air bleeding pipe 4 (fixing portion 4A) may be laid not only at the one end side thereof but also at the opening 1A side of the pipe lining material or over the entire length thereof.
【００１５】そして、以上のような管ライニング材１に
よれば、老朽化した管路を好適に補修することができ
る。係る施工法を説明すれば、図２はその概略図であ
り、８は下水道など地中に埋設された管路、９はその管
路に通じるマンホール（竪孔）を示す。尚、管ライニン
グ材１は、使用前には帯状に折り畳まれて保冷され、使
用時には後述の如く流体圧にて管路８の内部に反転され
つつ挿入される。According to the pipe lining material 1 as described above, an aged pipe line can be suitably repaired. To explain such a construction method, FIG. 2 is a schematic diagram thereof, 8 is a pipeline buried in the ground such as sewer, and 9 is a manhole (vertical hole) leading to the pipeline. Before use, the pipe lining material 1 is folded into a strip shape and kept cool, and at the time of use, the pipe lining material 1 is inserted into the pipe line 8 while being inverted by fluid pressure as described later.
【００１６】管ライニング材１を管路８内に反転挿入す
るには、例えば図３に示すようなベンド状の口金１０を
用い、その口金１０に管ライニング材１を通し、その開
口部１Ａ側の一端を外側に折り返して口金１０の一端外
周に取り付けると共に、口金１０の他の一端部にガイド
チューブ１１を接続する。特に、管ライニング材１はエ
ア抜き管４の取り付け部分（固定部４Ａ）を上向きにし
て口金１０に接続し、エア抜き管の延長部４Ｂは、口金
１０及びガイドチューブ１１の内側を通して外部に引き
出す。又、管ライニング材の一端封止部１Ｂ側もガイド
チューブ１１内を通じて外部に引き出し、その封止部１
Ｂには予め温水ホース１２を接続しておく。In order to reversely insert the pipe lining material 1 into the pipe line 8, for example, a bend-shaped mouthpiece 10 as shown in FIG. 3 is used, and the pipe lining material 1 is passed through the mouthpiece 10 and its opening 1A side. One end of the base is folded back and attached to the outer periphery of one end of the base 10, and the guide tube 11 is connected to the other end of the base 10. In particular, the pipe lining material 1 is connected to the mouthpiece 10 with the attachment portion (fixed portion 4A) of the air bleeder tube facing upward, and the extension portion 4B of the air bleeder tube is pulled out through the inside of the mouthpiece 10 and the guide tube 11. . Also, the one end sealing portion 1B side of the pipe lining material is pulled out through the guide tube 11 to the outside, and the sealing portion 1
The hot water hose 12 is connected to B in advance.
【００１７】そして、図２に示すように、その口金１０
を地上からマンホール９の底部に降ろし、管ライニング
材１の接続側を管路８の上流の入口に向ける一方、ガイ
ドチューブ１１をマンホール９から地上に立ち上げ、そ
の上部側の一端に取り付けられた円筒状の金具１３を図
示せぬ架台の部位で水平に支持する。Then, as shown in FIG.
From the ground to the bottom of the manhole 9 and the connecting side of the pipe lining material 1 is directed to the upstream inlet of the pipeline 8, while the guide tube 11 is raised from the manhole 9 to the ground and attached to one end of its upper side. The cylindrical metal fitting 13 is horizontally supported by a mount portion (not shown).
【００１８】その状態で地上からガイドチューブ１１の
中に水を注入し、これをガイドチューブ１１を通じて口
金１０の内部に供給する。すると、図４に示すように、
管ライニング材１はその水圧を受けて反転されつつ管路
８の下流に向かってその内部に順次挿入され、これに連
れてその末端に接続された温水ホース１２も管ライニン
グ材１の内側を這いながら管路８内に引き込まれる。
又、エア抜き管４の固定部４Ａも管ライニング材１に付
着したまま管路８内に挿入され、管路８の上流側で管ラ
イニング材１の内部上方に位置付けられる。In this state, water is poured into the guide tube 11 from the ground, and this is supplied to the inside of the base 10 through the guide tube 11. Then, as shown in FIG.
The pipe lining material 1 receives the water pressure and is inverted, and is sequentially inserted into the inside of the pipe line 8 toward the downstream, and the hot water hose 12 connected to the end of the pipe lining material 1 also crawls inside the pipe lining material 1. While being drawn into the conduit 8.
Further, the fixed portion 4A of the air bleeding tube 4 is also inserted into the pipe line 8 while being attached to the pipe lining material 1, and is positioned above the inside of the pipe lining material 1 on the upstream side of the pipe line 8.
【００１９】ここで、管ライニング材１は、大きな水圧
を受けて管路８の内壁に強固に押圧されるが、好ましく
は空気圧を併用して管ライニング材１の内圧を更に増大
させてやる。具体的には、図４に示すように、温水ホー
ス１２を貫通させた圧力蓋１４を金具１３の上面開口部
に取り付けてガイドチューブ１１の水面上に密閉空間１
５を形成し、その密閉空間１５内にコンプレッサＣから
圧力蓋１４を通じて圧縮空気を供給するのであり、これ
により管ライニング材１は水圧と空気圧とで管路８の内
壁に強力に押し付けられることになる。Here, the pipe lining material 1 is strongly pressed against the inner wall of the pipe line 8 by receiving a large water pressure, but preferably the air pressure is also used to further increase the internal pressure of the pipe lining material 1. Specifically, as shown in FIG. 4, the pressure lid 14 having the hot water hose 12 penetrating is attached to the opening of the upper surface of the metal fitting 13, and the closed space 1 is provided on the water surface of the guide tube 11.
5 is formed, and compressed air is supplied from the compressor C into the closed space 15 through the pressure lid 14, whereby the pipe lining material 1 is strongly pressed against the inner wall of the pipe line 8 by water pressure and air pressure. Become.
【００２０】そこで、その管ライニング材１を管路８の
内壁に押し付けたまま、図４に示すよう温水ホース１２
を通じてライニング材１の内部に温水を供給するのであ
り、このとき温水ホース１２の先端から流出する温水の
圧力と、管ライニング材１内に充満する水、及び密閉空
間１５内の空気との圧力により、ライニング材１内の貯
水は排水管１６を通じて温水タンク１７からボイラＢに
送られ、このボイラＢによって加熱され、これにより得
られた温水がポンプＰから温水ホース１２を通じて管ラ
イニング材１の先端内部に再送される。そして、この循
環する温水により管ライニング材１は加熱され、その樹
脂吸収材２に含浸された熱硬化性樹脂が硬化することに
なる。Therefore, while the pipe lining material 1 is being pressed against the inner wall of the pipe line 8, the hot water hose 12 as shown in FIG.
The hot water is supplied to the inside of the lining material 1 through the pressure of the hot water flowing from the tip of the hot water hose 12, the water filling the pipe lining material 1, and the air in the closed space 15 at this time. The water stored in the lining material 1 is sent from the hot water tank 17 to the boiler B through the drain pipe 16, and is heated by the boiler B. The hot water obtained by this is pumped from the pump P through the hot water hose 12 to the inside of the tip of the pipe lining material 1. Will be resent to. The pipe lining material 1 is heated by the circulating hot water, and the thermosetting resin impregnated in the resin absorbent 2 is cured.
【００２１】尚、管ライニング材１は水圧や空気圧の作
用により管路８の入口と口金１０との区間が膨張し、従
来はここに温水に含まれる気泡などが徐々に溜まって空
気溜まりＥを生じ（図６参照）、その空気溜まりが管路
８内に進行した。ところが、本例によれば管路８の上流
側で図４、図５のように管ライニング材１の内部上方に
エア抜き管４の固定部４Ａが存在し、これが空気溜まり
を即座に解消する。つまり、管ライニング材１の内部上
方に浮上した空気は、管ライニング材１の内圧によりエ
ア抜き管４の吸気口７よりその内部に吸い込まれ、延長
部４Ｂから外部に排出される。この結果、管ライニング
材１の内部は、空気溜まりが形成されることなく加圧用
液としての水又は温水で満たされた状態に保たれる。よ
って、管ライニング材１に含浸される熱硬化性樹脂の過
剰な発熱に起因する熱劣化、硬化不均一、変色（焼
け）、並びに肌荒れなどは発生せず、管路８内には良質
な硬質被膜が形成される。尚、管ライニング材１内の空
気がエア抜き管４を通じて排出されるとき、その内部の
加圧用液は未だ水である場合と、既に温水に置換されて
いる場合とがある。Incidentally, in the pipe lining material 1, the section between the inlet of the pipe 8 and the mouthpiece 10 expands due to the action of water pressure or air pressure, and conventionally air bubbles E contained in the warm water are gradually accumulated there to form an air pool E. It occurred (see FIG. 6), and the air pool proceeded into the pipe line 8. However, according to this example, the fixing portion 4A of the air bleeding pipe 4 is present above the inside of the pipe lining material 1 on the upstream side of the pipe line 8 as shown in FIGS. 4 and 5, and this immediately eliminates the air trap. . That is, the air that has floated above the inside of the pipe lining material 1 is sucked into the interior of the pipe lining material 1 through the intake port 7 of the air bleeding pipe 4 and discharged from the extension portion 4B to the outside. As a result, the inside of the pipe lining material 1 is kept in a state of being filled with water or hot water as a pressurizing liquid without forming an air pocket. Therefore, heat deterioration, uneven curing, discoloration (burning), and rough skin caused by excessive heat generation of the thermosetting resin impregnated in the pipe lining material 1 do not occur, and the pipe 8 has a high-quality hard material. A film is formed. When the air in the pipe lining material 1 is exhausted through the air vent pipe 4, the pressurizing liquid inside the pipe lining material 1 may be still water or may be already replaced with hot water.
【００２２】因に、エア抜き管４の一端側（延長部４
Ｂ）は圧力蓋１４を気密的に貫通して地上に引き出さ
れ、その一端が排気口１８として温水タンク１７の上部
に接続される。このため、管ライニング材１内の空気溜
まりが解消したとき、エア抜き管４より押し出される水
又は温水を温水タンク１７に還元できる。又、管ライニ
ング材１の硬化後には、エア抜き管４を地上から引っ張
るだけでこれを容易に取り除くことができる。Incidentally, one end side of the air bleeding tube 4 (extension portion 4
B) airtightly penetrates the pressure lid 14 and is drawn to the ground, and one end thereof is connected to the upper portion of the hot water tank 17 as an exhaust port 18. Therefore, when the air accumulation in the pipe lining material 1 is eliminated, the water or hot water pushed out from the air bleeding pipe 4 can be returned to the hot water tank 17. Further, after the tube lining material 1 is hardened, it can be easily removed only by pulling the air vent tube 4 from the ground.
【００２３】以上、本発明の好適な一例を説明したが、
管ライニング材１の反転はマンホール内に配置される口
金１０を用いるほか、これを地上から管路８内に反転挿
入するようにしてもよい。又、上記例では、管ライニン
グ材１の反転に水を利用したが、これに圧縮空気を用
い、管ライニング材１の反転終了後にエア抜き管４より
圧縮空気を排出しながら温水ホース１２を通じて管ライ
ニング材１内に温水を供給するようにしてもよい。尚、
この場合には管ライニング材１の反転中に圧縮空気が漏
れ出さぬようエア抜き管４の末端排気口１８はバルブに
て密閉される。更に、管ライニング材１は管路８内に反
転挿入することに限らず、これを管路８内に反転せずし
て挿入し、その後その内部に水などの加圧用液を注入す
るようにしてもよい。この場合、エア抜き管４は管ライ
ニング材１の外表面でなく、その内面に沿って取り付け
られ、その取り付け部分を上方にして管路内に挿入され
る。The preferred example of the present invention has been described above.
The pipe lining material 1 may be inverted by using the mouthpiece 10 arranged in the manhole, or may be inverted and inserted into the pipe line 8 from the ground. Further, in the above example, water was used to invert the pipe lining material 1, but compressed air was used for this, and after the inversion of the pipe lining material 1 was completed, compressed air was discharged from the air bleeding pipe 4 through the hot water hose 12 Warm water may be supplied into the lining material 1. still,
In this case, the terminal exhaust port 18 of the air vent pipe 4 is closed by a valve so that the compressed air does not leak out while the pipe lining material 1 is being inverted. Furthermore, the pipe lining material 1 is not limited to being inverted and inserted into the pipe line 8, but it may be inserted into the pipe line 8 without being inverted, and thereafter, a pressurizing liquid such as water may be injected therein. May be. In this case, the air bleeding pipe 4 is attached not along the outer surface of the pipe lining material 1 but along the inner face thereof, and is inserted into the pipe line with its attached portion facing upward.
【００２４】[0024]
【発明の効果】以上の説明で明らかなように、本発明に
よれば管路内への管ライニング材の挿入時に、エア抜き
管を管ライニング材の内部上方に挿入し、そのエア抜き
管を通じて管ライニング材と水又は温水との間に溜まっ
た空気を外部に排出するようにしていることから、管ラ
イニング材内を加圧用液としての温水で満たしたまま、
管ライニング材を加熱してこれに含浸される熱硬化性樹
脂を硬化させることができる。このため、熱硬化性樹脂
の過剰な硬化発熱を抑制して、その熱劣化、硬化不均
一、その過熱による変色、並びに施工面の肌荒れを防止
できる。As is apparent from the above description, according to the present invention, when the pipe lining material is inserted into the pipe, the air vent pipe is inserted above the inside of the pipe lining material, and the air vent pipe is inserted through the air vent pipe. Since the air accumulated between the pipe lining material and water or hot water is exhausted to the outside, while keeping the pipe lining material filled with hot water as a pressurizing liquid,
The tube lining material can be heated to cure the thermosetting resin impregnated therein. For this reason, it is possible to suppress excessive curing heat generation of the thermosetting resin, thereby preventing thermal deterioration, uneven curing, discoloration due to overheating, and roughening of the construction surface.
【００２５】特に、エア抜き管を管ライニング材の外表
面に蛇行状にして取り付け、その管ライニング材をエア
抜き管の取り付け部分を上向きにして管路内に反転挿入
するようにしていることから、エア抜き管の取り付け部
分に所定の幅をもたせて管ライニング材の内部上方への
エア抜き管の位置付けを容易かつ適正に行うことがで
き、しかもそのエア抜き管の一端側外周に所定の長さ範
囲に亙って複数の吸気口が穿設されることから、その各
吸気口より管ライニング材の内部上方に溜まった空気を
確実に排出できる。Particularly, since the air bleeding pipe is attached to the outer surface of the pipe lining material in a meandering manner, and the pipe lining material is inverted and inserted into the pipe line with the attachment portion of the air bleeding pipe facing upward. , The air bleeder tube has a certain width so that the air bleeder tube can be easily and properly positioned above the inside of the pipe lining material, and the air bleeder tube has a predetermined length on the outer periphery on one end side. Since a plurality of intake ports are bored over the range, the air accumulated above the inside of the pipe lining material can be reliably discharged from each intake port.
【図１】本発明に係る管ライニング材を部分的に破断し
て示した斜視図FIG. 1 is a perspective view showing a pipe lining material according to the present invention partially broken away.
【図２】図１の管ライニング材を管路内に反転挿入する
前の状態を示した説明図FIG. 2 is an explanatory view showing a state before the pipe lining material of FIG. 1 is reversely inserted into a pipe line.
【図３】図１の管ライニング材を口金に取り付けた状態
を示す断面概略図FIG. 3 is a schematic cross-sectional view showing a state in which the pipe lining material of FIG. 1 is attached to a die.
【図４】図１の管ライニング材を管路内に反転挿入した
状態を示す説明図FIG. 4 is an explanatory view showing a state in which the pipe lining material of FIG. 1 is inverted and inserted into a pipe line.
【図５】管路内に挿入された管ライニング材の部分断面
図FIG. 5 is a partial cross-sectional view of a pipe lining material inserted into a pipe line.
【図６】従来工法による管ライニング材の加熱時の状態
を示す部分断面図FIG. 6 is a partial cross-sectional view showing a state when heating a pipe lining material by a conventional method.
１ 管ライニング材 ２ 樹脂吸収材 ３ プラスチックフィルム ４ エア抜き管 ４Ａ 固定部 ４Ｂ 延長部 ５ 固定部材 ６ 継ぎ目 ７ 吸気口 ８ 管路 ９ マンホール １０ 口金 １１ ガイドチューブ １２ 温水ホース １４ 圧力蓋 1 Pipe lining material 2 resin absorbent 3 plastic film 4 Air bleeder 4A fixed part 4B extension 5 fixing members 6 seams 7 Intake port 8 pipelines 9 manholes 10 mouthpiece 11 Guide tube 12 Hot water hose 14 Pressure lid
Claims (3)
せしめて成る管ライニング材を管路内に挿入し、その管
ライニング材を管路の内壁に押圧した状態で該管ライニ
ング材をその内部に供給される温水により加熱して前記
熱硬化性樹脂を硬化させるようにした管ライニング工法
において、管ライニング材を管路内に挿入する前に該管
ライニング材にエア抜き管を取り付けておき、そのエア
抜き管が管ライニング材の内部上方に位置するようにし
て該管ライニング材を管路内に挿入した後、その管ライ
ニング材とこれを管路の内壁に押圧する水又は温水との
間に溜まった空気を前記エア抜き管を通じて外部に排出
することを特徴とする管ライニング工法。1. A pipe lining material obtained by impregnating a tubular resin absorbent material with a thermosetting resin is inserted into a pipe, and the pipe lining material is pressed against the inner wall of the pipe. In a pipe lining construction method in which the thermosetting resin is cured by heating with hot water supplied therein, an air vent pipe is attached to the pipe lining material before inserting the pipe lining material into the pipe line. After inserting the pipe lining material into the pipe line so that the air vent pipe is located above the inside of the pipe lining material, the pipe lining material and water or hot water that presses it against the inner wall of the pipe line. A pipe lining method, characterized in that the air accumulated between the pipes is discharged to the outside through the air vent pipe.
外表面に蛇行状にして取り付け、その管ライニング材を
エア抜き管の取り付け部分を上向きにして管路内に反転
挿入することを特徴とする請求項１記載の管ライニング
工法。2. An air bleeding pipe is attached to the outer surface of the pipe lining material in a meandering manner, and the pipe lining material is inverted and inserted into the pipe line with the mounting portion of the air bleeding pipe facing upward. The pipe lining method according to claim 1.
り付けられる一端側外周に所定の長さ範囲に亙って複数
の吸気口を穿設したものを用いることを特徴とする請求
項１、又は２記載の管ライニング工法。3. The air bleeding tube, wherein a plurality of intake ports are bored over a predetermined length range on the outer circumference at one end attached to the tube lining material, or The pipe lining method described in 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002036717A JP3873134B2 (en) | 2002-02-14 | 2002-02-14 | Pipe lining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002036717A JP3873134B2 (en) | 2002-02-14 | 2002-02-14 | Pipe lining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003236932A true JP2003236932A (en) | 2003-08-26 |
| JP3873134B2 JP3873134B2 (en) | 2007-01-24 |
Family
ID=27778526
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002036717A Expired - Lifetime JP3873134B2 (en) | 2002-02-14 | 2002-02-14 | Pipe lining method |
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| Country | Link |
|---|---|
| JP (1) | JP3873134B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021010169A1 (en) * | 2019-07-18 | 2021-01-21 | 株式会社湘南合成樹脂製作所 | Method for inverting lining material |
-
2002
- 2002-02-14 JP JP2002036717A patent/JP3873134B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021010169A1 (en) * | 2019-07-18 | 2021-01-21 | 株式会社湘南合成樹脂製作所 | Method for inverting lining material |
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| Publication number | Publication date |
|---|---|
| JP3873134B2 (en) | 2007-01-24 |
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