JP4104240B2

JP4104240B2 - Support equipment for existing aging pipe rehabilitation method, and existing aging pipe rehabilitation method

Info

Publication number: JP4104240B2
Application number: JP07999499A
Authority: JP
Inventors: 明今川; 康北山
Original assignee: Sekisui Chemical Co Ltd
Current assignee: Sekisui Chemical Co Ltd
Priority date: 1998-11-17
Filing date: 1999-03-24
Publication date: 2008-06-18
Anticipated expiration: 2019-03-24
Also published as: JP2000213053A

Description

【０００１】
【発明の属する技術分野】
本発明は既設老朽管更生工法における支保工装置、既設老朽管更生工法、及び閉塞部材に関するものである。
【０００２】
【従来の技術】
従来、例えば、特公平３−４８３９２号公報等に記載されているように、既設老朽管内に螺旋管のような新設ライニング管を挿入し、既設老朽管と新設ライニング管との間の間隙に裏込め材を注入充填する既設老朽管更生工法が知られている。
【０００３】
このような既設老朽管更生工法においては、特開平１０−１２１５６５号公報、特開平１０−１２１５６６号公報に記載されているような支保工装置が使用されている。即ち、既設老朽管と新設ライニング管との間の間隙に裏込め材を注入充填する際には、支保工装置を新設ライニング管内に挿入し、支保工装置に設けられた支持手段により支保工装置の環状枠を新設ライニング管内に設置して裏込め材の充填圧に対抗するようにされている。
【０００４】
既設老朽管と新設ライニング管との間の間隙に裏込め材を注入充填する際には、図９に示すように、既設老朽管（イ）と既設老朽管（イ）内に挿入されたライニング管（ロ）の一端から既設老朽管（イ）とライニング管（ロ）との間の間隙（ハ）に裏込め材の供給ホース（ニ）の先端のノズル（ホ）を挿入して裏込め材を注入充填していた。図９において、（へ）はノズル（ホ）に設けられたバルブである。
【０００５】
或いは、図１０に示すように、新設ライニング管（ロ）に注入孔（ト）を先端に鋸刃が設けられた円筒鋸等の工具を使用して穿孔し、ライニング管（ロ）の内面に注入用ノズルの取付部材（チ）を溶接等により取付け、取付部材（チ）に注入用ノズルを取付けて裏込め材を注入充填していた。
【０００６】
【発明が解決しようとする課題】
しかしながら、図９に示すように、既設老朽管（イ）とライニング管（ロ）の一端から既設老朽管（イ）とライニング管（ロ）との間の間隙（ハ）に裏込め材の供給ホース（ニ）の先端のノズル（ホ）を挿入して裏込め材を注入充填するのは、既設老朽管（イ）の施工距離が長い場合には、既設老朽管（イ）とライニング管（ロ）の一端からの裏込め材の注入では、全域に注入充填が困難となる恐れがある。
【０００７】
又、図１０に示すように、ライニング管（ロ）に注入孔（ト）を穿孔し、注入用ノズルの取付部材（チ）を溶接等により取付け、取付部材（チ）に注入用ノズルを取付けて裏込め材を注入充填するのは、注入充填後に取付部材（チ）の取り外し作業や注入孔（ト）を塞孔処理が必要であった。
【０００８】
本発明は、従来の既設老朽管更生工法における叙上の問題点に着目してなされたものであり、その目的とするところは、上記の問題を解決し、既設老朽管更生工法における支保工装置、既設老朽管更生工法を提供することにある。
【０００９】
【課題を解決するための手段】
請求項１に記載の発明（本発明１）は、断面略角形の既設老朽管内に新設されたライニング管内に挿入設置される、環状枠と、該環状枠を前記既設老朽管内及び前記ライニング管内に支持する支持手段とを有する既設老朽管更生工法における支保工装置であって、前記環状枠を既設老朽管内に支持する支持手段のうちの少なくとも一部が、前記既設老朽管の長手方向に直交する平面内の上方の部分に対称な対をなすように配設され、その対をなす支持手段が、前記環状枠に設けられたねじ孔にねじ込まれる雄ねじが外面に設けられた中空杆体をそれぞれ有し、該中空杆体を回転することにより前記環状枠の内側から外側に向けて進退可能とされ、該中空杆体の前記環状枠の外側の先端部付近に裏込め材吐出口が設けられ、該中空杆体の環状枠の内側の基端部に裏込め材供給ホースの一端と接続できる接続口が設けられているものからなることを特徴とする既設老朽管更生工法における支保工装置である。
【００１０】
請求項２に記載の発明（本発明２）は、請求項１に記載の支保工装置を使用する既設老朽管更生工法であって、請求項１に記載の支保工装置を既設老朽管内に新設されたライニング管内に挿入し、前記支保工装置の環状枠を支持手段により既設老朽管内及び新設ライニング管内に支持し、前記中空杆体の先端を前記ライニング管の注入孔に挿入貫通して前記既設老朽管の内面に圧接させ、該中空杆体の基端の接続口に裏込め材供給ホースを接続し、該中空杆体の先端付近の裏込め材吐出口から裏込め材を吐き出し、裏込め材を前記既設老朽管と前記ライニング管との間の間隙に充填することを特徴とする既設老朽管更生工法。
【００１１】
請求項３に記載の発明（本発明３）は、断面略角形の既設老朽管内に新設されたライニング管内に挿入設置される、環状枠と、該環状枠を前記ライニング管内に支持する支持手段とを有する既設老朽管更生工法における支保工装置であって、前記既設老朽管の長手方向に直交する平面内の上方の部分に対称な対をなすように中空杆体が配設され、その対をなす中空杆体が、前記環状枠に設けられたねじ孔にねじ込まれる雄ねじが外面に設けられ、回転することにより前記環状枠の内側から前記ライニング管の注入孔に向けて進退可能とされ、前記環状枠の外側の先端部付近に裏込め材吐出口が設けられ、前記環状枠の内側の基端部に裏込め材供給ホースの一端と接続できる接続口が設けられているものからなることを特徴とする既設老朽管更生工法における支保工装置。
【００１２】
請求項４に記載の発明（本発明４）は、請求項３に記載の支保工装置を使用する既設老朽管更生工法であって、請求項３に記載の支保工装置を既設老朽管内に新設されたライニング管内に挿入し、前記支保工装置の環状枠を支持手段により新設されたライニング管内に支持し、前記中空杆体の先端を前記ライニング管の注入孔に進出させ、該中空杆体の基端の接続口に裏込め材供給ホースを接続し、該中空杆体の先端付近の裏込め材吐出口から裏込め材を吐き出し、裏込め材を前記既設老朽管と前記ライニング管との間の間隙に充填することを特徴とする既設老朽管更生工法。
【００１３】
請求項５に記載の発明（本発明５）は、前記対をなす中空杆体の先端付近の裏込め材吐出口から裏込め材をバランスを取りつつ吐き出し、裏込め材を前記既設老朽管と前記ライニング管との間の間隙に充填することを特徴とする請求項４に記載の既設老朽管更生工法。
【００１４】
本発明において、新設されるライニング管としては、帯状体を螺旋状に巻回し、隣接する帯状体の端縁同士を接続することにより形成される螺旋管を使用してもよく、その他の通常の管を使用してもよい。
【００１５】
螺旋管の帯状体は、塩化ビニル樹脂、ポリエチレン、ポリプロピレン、ポリカーボネート、ポリエステル、或いはこれらの合成樹脂をガラス繊維で補強した材料により押出成形法等により成形できる。
【００１６】
本発明３において、塞孔部材の材質としては、新設されるライニング管の注入孔を塞孔できるものであればよいものであって、特に限定されないが、例えば、硬質塩化ビニル樹脂、ポリエチレン、ポリプロピレン等の合成樹脂や金属等が使用できる。
【００１７】
〔作用〕
本発明１の既設老朽管更生工法における支保工装置は、前記環状枠を既設老朽管内に支持する支持手段のうちの少なくとも一部が、前記既設老朽管の長手方向に直交する平面内の上方の部分に対称な対をなすように配設され、その対をなす支持手段が、前記環状枠に設けられたねじ孔にねじ込まれる雄ねじが外面に設けられた中空杆体をそれぞれ有し、該中空杆体を回転することにより前記環状枠の内側から外側に向けて進退可能とされ、該中空杆体の前記環状枠の外側の先端部付近に裏込め材吐出口が設けられ、該中空杆体の環状枠の内側の基端部に裏込め材供給ホースの一端と接続できる接続口が設けられているものからなるので、支持手段により環状枠を既設老朽管内及びライニング管内に支持し、中空杆体の先端をライニング管の注入孔に挿入貫通して老朽杆内面に圧接させ、中空杆体の基端の接続口に裏込め材供給ホースの一端と接続することにより裏込め材供給ホースから既設老朽管とライニング管との間の間隙に裏込め材を均一に注入充填する
ことができる。
【００１８】
本発明２の既設老朽管更生工法は、本発明１に記載の支保工装置を既設老朽管内に新設されたライニング管内に挿入し、前記支保工装置の環状枠を支持手段により既設老朽管内及び新設ライニング管内に支持し、前記中空杆体の先端を前記ライニング管の注入孔に挿入貫通して前記既設老朽管の内面に圧接させ、該中空杆体の基端の接続口に裏込め材供給ホースを接続し、該中空杆体の先端付近の裏込め材吐出口から裏込め材を吐き出し、裏込め材を前記既設老朽管と前記ライニング管との間の間隙に充填するので、従来のように、裏込め材注入ノズルの取付部材の取付け、取り外し作業は不要である。
【００１９】
本発明３の既設老朽管更生工法における支保工装置は、前記既設老朽管の長手方向に直交する平面内の上方の部分に対称な対をなすように中空杆体が配設され、その対をなす中空杆体が、前記環状枠に設けられたねじ孔にねじ込まれる雄ねじが外面に設けられ、回転することにより前記環状枠の内側から前記ライニング管の注入孔に向けて進退可能とされ、前記環状枠の外側の先端部付近に裏込め材吐出口が設けられ、前記環状枠の内側の基端部に裏込め材供給ホースの一端と接続できる接続口が設けられているものからなるので、支持手段により環状枠をライニング管内に支持し、中空杆体の先端をライニング管の注入孔に進出させ、中空杆体の基端の接続口に裏込め材供給ホースの一端と接続することにより裏込め材供給ホースから既設老朽管とライニング管との間の間隙に裏込め材を左右均一に注入充填することができる。
【００２０】
本発明４の既設老朽管更生工法は、本発明３に記載の支保工装置を既設老朽管内に新設されたライニング管内に挿入し、前記支保工装置の環状枠を支持手段により新設されたライニング管内に支持し、前記中空杆体の先端を前記ライニング管の注入孔に進出させ、該中空杆体の基端の接続口に裏込め材供給ホースを接続し、該中空杆体の先端付近の裏込め材吐出口から裏込め材を吐き出し、裏込め材を前記既設老朽管と前記ライニング管との間の間隙に充填するので、従来のように、裏込め材注入ノズルの取付部材の取付け、取り外し作業は不要である。
【００２１】
本発明５の既設老朽管更生工法は、本発明４において、前記対をなす中空杆体の先端付近の裏込め材吐出口から裏込め材をバランスを取りつつ吐き出し、裏込め材を前記既設老朽管と前記ライニング管との間の間隙に充填することにより、裏込め材の注入中に既設老朽管とライニング管との左右の間隔を均一化させるように修正しつつ、その間隙内に裏込め材を注入充填させることができるので、予め既設老朽管とライニング管との左右の間隔を正確に均一に工程を省略することができるので施工性に優れており、又、注入中におけるライニング管のアンバランスな浮き上がりを防止することができる。
【００２２】
【発明の実施の形態】
次に、本発明の実施の形態を図面を参照しながら説明する。
図１は本発明に係る支保工装置の一例の使用態様を示す断面図である。
図１において、Ａは支保工装置、１は支保工装置Ａの８角形状の環状枠であり、環状枠１は複数個の主部材１１と曲がり継手１２とから構成され、主部材１１の両端が曲がり継手１２の受口内に挿入嵌合されることにより環状枠１が形成されている。主部材１１の曲がり継手１２への挿入深さを調節することにより、或いは、長さの異なる主部材１１を使用することにより環状枠１の大きさを変えることができるようになっている。
【００２３】
２は更生しようとする断面円形の既設老朽管、３は既設老朽管２内に新設された断面円形のライニング管である。ライニング管３は帯状体を螺旋状に巻回し、隣接する帯状体の端縁同士を接続することにより形成された螺旋管である。
【００２４】
１３、１４は環状枠１に設けられた支持手段である。支持手段１３は環状枠１をライニング管３内に支持するためのものである。支持手段１３は外面に雄ねじが設けられた杆体１３１と杆体受け１３２が設けられた接触部材１３３とからなる。杆体１３１は環状枠１の主部材１１に設けられたねじ孔にねじ込まれている。杆体１３１の環状枠１の内側の基端部には短角柱状のスパナ掛け１３１１が設けられ、杆体１３１の環状枠１の外側の先端部は杆体受け１３２内に回転可能に収納されている。
【００２５】
杆体１３１の基端部のスパナ掛け１３１１をスパナにより杆体１３１を回転することにより杆体１３１は環状枠１に対して進退し、杆体１３１をねじ込むことにより接触部材１３３がライニング管３の内面に圧接し、緩めると接触部材１３３がライニング管３の内面から離れるようになっている。各支持手段１３の杆体１３１をねじ込むことにより環状枠１がライニング管３の内方に支持されるようになっている。
【００２６】
支持手段１４は環状枠１をライニング管３及び既設老朽管２内に支持するためのものである。支持手段１４は外面に雄ねじが設けられた中空杆体１４１とねじ孔金具１４２が設けられた接触部材１４３とからなる。中空杆体１４１は環状枠１の主部材１１及びねじ孔金具１４２に設けられたねじ孔にねじ込まれている。中空杆体１４１の環状枠１の内側の基端部には裏込め材供給ホース４の一端と接続できる接続口１４１１が設けられ、中空杆体１４１の環状枠１の外側の先端部には吐出口１４１２が設けられている。尚、４１はホース４の一端に設けられたカプラー、４２はカプラー４１に接続されたバルブであり、バルブ４２が接続口１４１１に接続されている。
【００２７】
中空杆体１４１を回転することにより杆体１３１は環状枠１及びねじ孔金具１４２に対して進退し、中空杆体１４１をねじ込むことにより中空杆体１４１の先端がライニング管３の注入孔３１を貫通して既設老朽管２の内面に圧接され、環状枠１が既設老朽管２に対して支持されると共にねじ孔金具１４２を中空杆体１４１に対してねじ込むことにより接触部材１４３がライニング管３の内面に圧接され、環状枠１がライニング管３の内方に支持され、既設老朽管２とライニング管３との間隔を保持するようになっている。逆に、ねじ孔金具１４２を緩めると接触部材１４３がライニング管３の内面から離れ、中空杆体１４１を緩めると中空杆体１４１の先端が既設老朽管２の内面から離れるようになっている。
【００２８】
図１に示す本発明の支保工装置Ａは叙上の構造を備えているので、図１に示すように、支保工装置Ａを既設老朽管２内に新設されたライニング管３内に挿入し、支持手段１３により支保工装置Ａの環状枠１をライニング管３内に支持すると共に、支持手段１４により環状枠１を既設老朽管２内及びライニング管３内に支持すると共に、既設老朽管２とライニング管３との間隔を保持することができる。
【００２９】
このような状態において、図１に示すように、支持手段１４の中空杆体１４１の基端部の接続口１４１１にホース４の一端に設けられたバルブ４２を接続し、バルブ４２を開くことによりホース４からモルタルのような裏込め材５が矢印ａで示すように支持手段１４の杆体１４１の先端部の吐出口１４１２から既設老朽管２とライニング管３との間の間隙に注入充填される。
【００３０】
図２は本発明の支保工装置の他の一例の使用態様を示す断面図である。
図２に示す支保工装置Ｂは断面角形の既設老朽管２ｂ及びライニング管３ｂに使用されるものである。
【００３１】
支保工装置Ｂの８角形状の環状枠１ｂは複数個の主部材１１ｂと曲がり継手１２ｂとから構成され、主部材１１ｂの両端が曲がり継手１２ｂの受口内に挿入嵌合されることにより環状枠１ｂが形成されている。
【００３２】
支保工装置Ｂの環状枠１ｂにおいては、曲がり継手１２ｂにねじ孔が設けられ、曲がり継手１２ｂのねじ孔に支持手段１３、１４の杆体１３１、中空杆体１４１がねじ込まれている。杆体受け１３２ｂ、１４２ｂは２個の接触部材１３３、１３３、１４３、１４３に跨がって設けられている。２個の接触部材１３３、１３３、１４３、１４３の中間には接触部材１３４、１４４が設けられ、中間の接触部材１３４、１４４は杆体受け１３２ｂ、１４２ｂに取付けられている。
【００３３】
又、支保工装置Ｂの環状枠１ｂには、既設老朽管２ｂの長手方向に直交する平面内の上方の部分に対称な対をなすように２個の支持手段１４、１４が設けられ、各支持手段１４の中空杆体１４１の基端部の接続口１４１１にはホース４のバルブ４２がカプラー４１を介して接続されている。支保工装置Ｂのその他の構成は図１に示す支保工装置Ａと同様であるので、図１に示す支保工装置Ａと同一の符号を付けることにより説明を省略する。
【００３４】
図２に示す本発明の支保工装置Ｂは叙上の構造を備えているので、図２に示すように、支保工装置Ｂを既設老朽管２ｂ内に新設されたライニング管３ｂ内に挿入し、支持手段１３により支保工装置Ｂの環状枠１ｂをライニング管３ｂに支持すると共に、既設老朽管２ｂとライニング管３ｂとの間隔を保持することができる。
【００３５】
このような状態において、図２に示すように、２個の支持手段１４、１４のそれぞれに中空杆体１４１の基端部の接続口１４１１にホース４の一端に設けられたバルブ４２を接続し、バルブ４２を開くことにより、それぞれ、ホース４から裏込め材が矢印ａで示すような支持手段１４の中空杆体１４１の先端部の吐出口１４１２から均一に吐き出されて、既設老朽管２ｂとライニング管３ｂとの間に間隙に左右均一になるように注入充填される。
【００３６】
図３は図１に示すように、既設老朽管２とライニング管３との間の間隙に裏込め材５を注入した後、ライニング管３の注入孔３１を塞孔部材６により塞孔した状態を示す拡大断面図である。
【００３７】
ライニング管３は帯状体３２を螺旋状に巻回して構成されている。帯状体３２は図４にも示すように、基板３２１の片面の両端付近に接続用凸条３２２及び接続用凹条３２３が設けられ、中途部に断面Ｔ形のリブ３２４が突設され、リブ３２４間に断面Ｗ形の補強材が嵌合された構造を備えている。隣接する帯状体３２の接続用凸条３２２が接続用凹条３２３内に挿入嵌合されることにより隣接する帯状体３２、３２同士が接続されて螺旋管が構成されている。尚、ライニング管３の注入孔３１は、図４に示すように、先端に鋸刃が設けられた円筒鋸７を使用して穿孔される。
【００３８】
塞孔部材６は栓体６１と栓受け部材６２とからなり、図５に示すように、栓体６１の外面には雄テーパーねじ６１１が設けられ、図６に示すように、底板にはねじ込み用の６角穴６１２が設けられている。栓受け部材６２は、内面に雌テーパーねじ６２１が設けられた短筒の一端に係止縁６２２が設けられ、他端にフランジ６２３が設けられて構成されている。
【００３９】
図３、５に示すように、ライニング管３の注入孔３１に塞孔部材６の栓受け部材６２を取付け、栓受け部材６２の雌テーパーねじ６２１に栓体６１の雄テーパーねじ６１１をねじ込むことによりライニング管３の注入孔３１が塞孔される。栓受け部材６２の雌テーパーねじ６２１又は栓体６１の雄テーパーねじ６１１に予め水膨張性接合剤（積水化学工業株式会社製の商品名「エスロンハイシー４」）を塗布しておけば止水性が一層高まる。
【００４０】
尚、図３において、５１は支保工装置Ａの杆体１４１が抜けた跡に充填された粘度セメント又はドレンタイトである。
【００４１】
図３、５に示す塞孔部材６は栓体６１と栓受け部材６２とからなるので、ライニング管３の注入孔３１に栓受け部材６２を取付け、栓受け部材６２に栓体６１をねじ込むことにより容易にライニング管３の注入孔３１を塞孔することができる。
【００４２】
図７は本発明の支保工装置の更に他の一例の使用態様を示す断面図である。図７に示す支保工装置Ｃは断面略角形の既設老朽管２ｃ及びライニング管３ｃに使用されるものである。
【００４３】
支保工装置Ｃの８角形状の環状枠１ｃは複数個の主部材１１ｃと曲がり継手１２ｃとから構成され、主部材１１ｃの両端が曲がり継手１２ｃの受口内に挿入嵌合されることにより環状枠１ｃが形成されている。
【００４４】
支保工装置Ｃの環状枠１ｃにおいては、曲がり継手１２ｃにねじ孔が設けられ、曲がり継手１２ｃのねじ孔に支持手段１３の杆体１３１がねじ込まれている。杆体受け１３２ｃは２個の接触部材１３３、１３３に跨がって設けられている。２個の接触部材１３３、１３３の中間には接触部材１３４が設けられ、中間の接触部材１３４は杆体受け１３２ｃに取付けられている。
【００４５】
又、支保工装置Ｃの環状枠１ｃには、既設老朽管２ｃの長手方向に直交する平面内の上隅の部分に対称な対をなすように２個の中空杆体１５、１５が設けられ、各中空杆体１５の基端部の接続口１５１にはホース４のバルブ４２がカプラー４１を介して接続されている。各中空杆体１５には、環状枠１ｃの主部材１１ｃに設けられたねじ孔にねじ込まれる雄ねじが外面に設けられ、回転することより環状枠１ｃの内側からライニング管３ｃの長手方向に直交する平面内の上隅の部分に対称な対をなすように設けられた注入孔に向けて進退可能とされ、先端部付近に裏込め材吐出口１５２が設けられている。
【００４６】
図７に示す本発明の支保工装置Ｃは叙上の構造を備えているので、図７に示すように、支保工装置Ｃを既設老朽管２ｃ内に新設されたライニング管３ｃ内に挿入し、支持手段１３により支保工装置Ｃの環状枠１ｃをライニング管３ｃに支持する。
【００４７】
このような状態において、図８（ａ）に示すように、２個の中空杆体１５、１５を、それぞれ回転することにより環状枠１２ｃ、１２ｃの内側からライニング管３ｃの注入孔に進出させ、それぞれの基端部の接続口１５１、１５１にホース４の一端に設けられたバルブ４２、４２を接続し、バルブ４２、４２を開いて、既設老朽管２ｃとライニング管３ｃとの間に間隙に裏込め材を左右の吐出量がほぼ同一となるように吐き出させる。
【００４８】
この際、各吐出口１５２、１５２から既設老朽管２ｃとライニング管３ｃとの間隙の左右に注入する裏込め材量を管理して、左右に注入する裏込め材の量がほぼ同一となるように管理する。左右注入量は直接裏込め材の注入量で管理してもよいし、別途ライニング管３ｃに設けた確認用の孔によって行ってもよい。
【００４９】
これにより、図８（ｂ）に示すように、既設老朽管２ｃとライニング管３ｃとの間隙の左側が狭い場合には、その間隙に注入される裏込め材５の高さが高くなり、ライニング管３ｃには右側に移動させるような力Ｆが作用するので、既設老朽管２ｃとライニング管３ｃとの左右の間隙が均一になるように修正される。
【００５０】
又、逆に、図８（ｃ）に示すように、既設老朽管２ｃとライニング管３ｃとの間隙の右側が狭い場合には、その間隙に注入される裏込め材５の高さが高くなり、ライニング管３ｃには右側に移動させるような力Ｆが作用するので、既設老朽管２ｃとライニング管３ｃとの左右の間隙が均一になるように修正される。
【００５１】
このようにして、図８（ｄ）〜（ｆ）に示すように、既設老朽管２ｃとライニング管３ｃとの左右の間隙を均一になるように修正しつつ、その間隙内に左右均一になるように裏込め材を注入充填することができる。
これにより、ライニング管３ｃの左右方向に働く浮力のバランスをとることができ、裏込め材の注入工程中のライニング管３ｃのアンバランスな浮き上がりを防止することができる。
【００５２】
〔実施例〕
図１に示すように、既設老朽管２内に新設ライニング管３を挿入し、新設ライニング管３内に支保工装置Ａを挿入し、新設ライニング管３に注入孔３１を穿設し、支保工装置Ａを支持装置１３、１４により支持し設置し、ホース４から裏込め材５を支保工装置Ａの杆体１４１に供給し、既設老朽管２と新設ライニング管３との間の間隙を裏込め材５を充填した。
【００５３】
その後、杆体１４１を新設ライニング管３に注入孔３１から引き抜き、支保工装置Ａを新設ライニング管３内から撤去し、図３に示すように、杆体１４１の引き抜き跡に粘度セメント又はドレンタイト５１を充填し、新設ライニング管３の注入孔３１に栓受け部材６２を取付け、栓受け部材６２に栓体６１をねじ込むことにより新設ライニング管３の注入孔３１を塞孔した。
【００５４】
尚、既設老朽管２の内径Ｄ１は１５００ｍｍ、新設ライニング管３の外径Ｄ２は１３５０ｍｍ（図１）、帯状体３２の接続用凸条３２２と接続用凹条３２３との間隔Ｌは７９ｍｍ、新設ライニング管３の注入孔３１の口径Ｄ３は５０ｍｍ（図４）、新設ライニング管３内の支保工装置Ａの設置間隔は約２ｍである。
【００５５】
〔評価〕
新設ライニング管３の内外に水圧２．０ｋｇ／ｃｍ2 を加えたところ漏水は起こらなかった。
【００５６】
以上、本発明の実施の形態を図により説明したが、本発明の具体的な構成は図示の実施の形態に限定されることはなく、本発明の主旨を逸脱しない範囲の設計変更は本発明に含まれる。
【００５７】
環状枠１は図１に示す実施の形態のように、取材１１と曲がり継手１２とから構成する代わりに一体化された環状枠を使用してもよい。
又、塞孔部材６の栓受け部材６２の新設ライニング管３の注入孔３１への取付けは、図３、５に示す実施の形態のように栓受け部材６２を注入孔３１の周縁部に嵌め込む代わりに栓受け部材６２を注入孔３１の周縁部に接着してもよい。
【００５８】
【発明の効果】
本発明１の既設老朽管更生工法における支保工装置は、上記のとおりとされているので、支持手段により環状枠を既設老朽管内及びライニング管内に支持し、中空杆体の先端をライニング管の注入孔に挿入貫通して老朽杆内面に圧接させ、中空杆体の基端の接続口に裏込め材供給ホースの一端と接続することにより裏込め材供給ホースから既設老朽管とライニング管との間の間隙に裏込め材を均一に注入充填することができる。
【００５９】
本発明２の既設老朽管更生工法は、上記のとおりとされているので、従来のように、裏込め材注入ノズルの取付部材の取付け、取り外し作業は不要である。
【００６０】
本発明３の既設老朽管更生工法における支保工装置は、上記のとおりとされているので、支持手段により環状枠をライニング管内に支持し、中空杆体の先端をライニング管の注入孔に合致させ、中空杆体の基端の接続口に裏込め材供給ホースの一端と接続することにより裏込め材供給ホースから既設老朽管とライニング管との間の間隙に裏込め材を左右均一に注入充填することができる。
【００６１】
本発明４の既設老朽管更生工法は、上記のとおりとされているので、従来のように、裏込め材注入ノズルの取付部材の取付け、取り外し作業は不要である。
【００６２】
本発明５の既設老朽管更生工法は、上記のとおりとされているので、裏込め材の注入中に既設老朽管とライニング管との左右の間隔を均一化させるように修正しつつ、その間隙内に裏込め材を注入充填させることができ、予め既設老朽管とライニング管との左右の間隔を正確に均一に工程を省略することができるので施工性に優れており、又、注入中におけるライニング管のアンバランスな浮き上がりをも防止することができる。
【図面の簡単な説明】
【図１】本発明に係る支保工装置の一例の使用態様を示す断面図。
【図２】本発明に係る支保工装置の他の一例の使用態様を示す断面図。
【図３】本発明に係る塞孔部材の使用態様を拡大して示す断面図。
【図４】ライニング管に注入孔を穿孔する態様を示す断面図。
【図５】図３に示す本発明に係る塞孔部材の使用態様を拡大して示す分解断面図。
【図６】図３に示す本発明に係る塞孔部材の栓受け部材の底面図。
【図７】本発明に係る支保工装置の更に他の一例の使用態様を示す断面図。
【図８】図７に示す支保工装置を使用した本発明の既設老朽管更生工法の説明図であり、（ａ）〜（ｆ）は順次最初の工程から最終工程に至るまでを説明する断面図である。
【図９】従来の既設老朽管更生工法を示す説明図。
【図１０】従来の既設老朽管更生工法を示す説明図。
【符号の説明】
Ａ、Ｂ、Ｃ支保工装置
１、１ｂ、１ｃ環状枠
２、２ｂ、２ｃ既設老朽管
３、２ｃ、３ｃライニング管
４ホース
１１、１１ｂ、１１ｃ主部材
１２、１２ｂ、１２ｃ曲がり継手
１３、１４支持手段
１５、１４１中空杆体
３１注入孔
４１カプラー
４２バルブ
１４１１接続口
１５２、１４１２吐出口
１３１杆体
１３２杆体受け
１３３、１４３接触部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a support apparatus, an existing aging pipe rehabilitation method, and a blocking member in an existing aging pipe rehabilitation method.
[0002]
[Prior art]
Conventionally, as described in, for example, Japanese Patent Publication No. 3-48392, a new lining pipe such as a spiral pipe is inserted into an existing aging pipe, and a gap between the existing aging pipe and the new lining pipe is inserted into the gap. An existing aging pipe rehabilitation method is known in which filling material is injected and filled.
[0003]
In such an existing aging pipe rehabilitation method, a supporting apparatus as described in JP-A-10-121565 and JP-A-10-121666 is used. That is, when the backfill material is injected and filled into the gap between the existing aging pipe and the newly installed lining pipe, the supporting apparatus is inserted into the newly installed lining pipe, and the supporting apparatus is provided by the support means provided in the supporting apparatus. An annular frame is installed in the newly installed lining pipe to counter the filling pressure of the backfill material.
[0004]
When filling and filling the backfill material into the gap between the existing aging pipe and the new lining pipe, as shown in Fig. 9, the lining inserted into the existing aging pipe (I) and the existing aging pipe (I). Insert the nozzle (e) at the end of the supply hose (d) of the backfill material into the gap (c) between the existing aged pipe (b) and the lining pipe (b) from one end of the pipe (b). The material was injected and filled. In FIG. 9, (he) is a valve provided in the nozzle (e).
[0005]
Alternatively, as shown in FIG. 10, a new lining pipe (b) is drilled with an injection hole (g) using a tool such as a cylindrical saw provided with a saw blade at the tip, and the inner surface of the lining pipe (b) is formed. The injection nozzle mounting member (chi) is attached by welding or the like, and the injection nozzle is attached to the attachment member (chi) to inject and fill the backfill material.
[0006]
[Problems to be solved by the invention]
However, as shown in FIG. 9, supply of the backfill material from one end of the existing aging pipe (b) and the lining pipe (b) to the gap (c) between the existing aging pipe (b) and the lining pipe (b) Inserting the nozzle (e) at the tip of the hose (d) and injecting and filling the backfill material is necessary if the existing aged pipe (a) has a long construction distance and the existing aged pipe (a) and lining pipe ( In the injection of the backfilling material from one end of (b), there is a risk that the filling and filling of the entire area may be difficult.
[0007]
In addition, as shown in FIG. 10, the injection hole (g) is drilled in the lining pipe (b), the injection nozzle attachment member (chi) is attached by welding or the like, and the injection nozzle is attached to the attachment member (chi). In order to inject and fill the backfilling material, it is necessary to remove the mounting member (h) and to close the injection hole (g) after the filling.
[0008]
The present invention has been made paying attention to the above-mentioned problems in the existing aging pipe rehabilitation method, and the object is to solve the above-mentioned problem and to provide a support device in the existing aging pipe rehabilitation method. The purpose is to provide an existing aging pipe rehabilitation method.
[0009]
[Means for Solving the Problems]
The invention according to claim 1 (present invention 1) includes an annular frame inserted and installed in a lining pipe newly installed in an existing aging pipe having a substantially square cross section, and the annular frame in the existing aging pipe and the lining pipe. A supporting device in an existing aging pipe rehabilitation method having a supporting means for supporting, wherein at least a part of the supporting means for supporting the annular frame in the existing aging pipe is orthogonal to the longitudinal direction of the existing aging pipe. The support means for forming the pair is arranged in a symmetrical pair in the upper part in the plane, and each of the support means has a hollow housing having a male screw screwed into a screw hole provided in the annular frame. Then, by rotating the hollow casing, it is possible to advance and retreat from the inner side of the annular frame toward the outer side, and a backfilling material discharge port is provided in the vicinity of the tip of the outer side of the annular frame of the hollow casing. Annular frame of frame A shoring system in existing old pipe rehabilitation method that connection ports can be connected to one end of the back-filling material supply hose to the proximal end of the inner is characterized in that it consists of those provided.
[0010]
The invention according to claim 2 (invention 2) is an existing aging pipe rehabilitation method using the support apparatus according to claim 1, wherein the support apparatus according to claim 1 is newly installed in the existing aging pipe Inserted into the lining pipe, the annular frame of the support apparatus is supported by the supporting means in the existing aging pipe and the new lining pipe, and the tip of the hollow housing is inserted into the injection hole of the lining pipe and penetrates the existing aging pipe. Pressure contact the inner surface of the tube, connect a backfilling material supply hose to the connection port at the base end of the hollow housing, discharge the backfilling material from the backfilling material discharge port near the tip of the hollow housing, An existing aging pipe rehabilitation method, wherein a gap between the existing aging pipe and the lining pipe is filled.
[0011]
The invention according to claim 3 (present invention 3) includes an annular frame inserted and installed in a lining pipe newly installed in an existing aging pipe having a substantially square cross section, and a supporting means for supporting the annular frame in the lining pipe. A supporting device in an existing aging pipe rehabilitation method having a hollow frame is disposed so as to form a symmetrical pair in an upper part in a plane perpendicular to the longitudinal direction of the existing aging pipe, and forms a pair. The hollow housing is provided on the outer surface with a male screw that is screwed into a screw hole provided in the annular frame, and can be moved forward and backward from the inside of the annular frame toward the injection hole of the lining pipe by rotating. A backfilling material discharge port is provided in the vicinity of the outer front end portion, and a connection port that can be connected to one end of the backfilling material supply hose is provided at the inner base end portion of the annular frame. Existing aging pipes Shoring device in the method.
[0012]
The invention according to claim 4 (invention 4) is an existing aging pipe rehabilitation method using the support construction apparatus according to claim 3, wherein the support construction apparatus according to claim 3 is newly installed in the existing aging pipe Inserted into the lining pipe, the annular frame of the support device is supported by the support means in the newly formed lining pipe, the tip of the hollow casing is advanced into the injection hole of the lining pipe, and the base end of the hollow casing A backfilling material supply hose is connected to the connection port of the hollow housing, and the backfilling material is discharged from the backfilling material discharge port near the tip of the hollow casing, and the backfilling material is inserted into the gap between the existing aging pipe and the lining pipe. An existing aging pipe rehabilitation method characterized by filling.
[0013]
The invention according to claim 5 (invention 5) is characterized in that the backfilling material is discharged from the backfilling material discharge port in the vicinity of the tip of the pair of hollow casings while balancing the backfilling material, The existing aging pipe rehabilitation method according to claim 4, wherein a gap between the lining pipe and the lining pipe is filled.
[0014]
In the present invention, as the newly installed lining tube, a spiral tube formed by spirally winding a strip and connecting the edges of adjacent strips may be used. A tube may be used.
[0015]
The strip of the helical tube can be formed by an extrusion method or the like using a vinyl chloride resin, polyethylene, polypropylene, polycarbonate, polyester, or a material obtained by reinforcing these synthetic resins with glass fibers.
[0016]
In the present invention 3, the material of the closing member is not particularly limited as long as it can close the injection hole of the newly installed lining pipe. For example, hard vinyl chloride resin, polyethylene, polypropylene Synthetic resins such as these and metals can be used.
[0017]
[Action]
In the support device for the existing aging pipe rehabilitation method of the present invention 1, at least a part of the support means for supporting the annular frame in the existing aging pipe is above the plane perpendicular to the longitudinal direction of the existing aging pipe. The support means for forming a pair symmetrical to each other has a hollow housing provided on the outer surface with a male screw screwed into a screw hole provided in the annular frame, and the hollow housing , It is possible to move forward and backward from the inside of the annular frame toward the outside, and a backfilling material discharge port is provided in the vicinity of the tip of the outside of the annular frame, and the annular frame of the hollow frame is provided. Since the inner base end is provided with a connection port that can be connected to one end of the backfilling material supply hose, the annular frame is supported by the supporting means in the existing aged pipe and lining pipe, and the tip of the hollow housing is lined Tube note Insert through the hole and press the inner surface of the old slag, and connect one end of the backfilling material supply hose to the connection port at the base end of the hollow housing. Fill and fill the gap with backfilling material evenly
be able to.
[0018]
The existing aging pipe rehabilitation method of the present invention 2 is the insertion of the support apparatus according to the present invention 1 into a lining pipe newly installed in the existing aging pipe, and the annular frame of the support apparatus is installed in the existing aging pipe and newly installed by the supporting means. Supported in the lining pipe, the front end of the hollow casing is inserted through the injection hole of the lining pipe and pressed into the inner surface of the existing aging pipe, and the backfilling material supply hose is connected to the connection port at the base end of the hollow casing Since the backfilling material is discharged from the backfilling material discharge port near the tip of the hollow casing and the backfilling material is filled in the gap between the existing aging pipe and the lining pipe. There is no need to attach or remove the material injection nozzle attachment member.
[0019]
In the supporting device for the existing aging pipe rehabilitation method of the present invention 3, hollow casings are disposed so as to form a symmetrical pair in an upper part in a plane orthogonal to the longitudinal direction of the existing aging pipe, and form a pair. The hollow housing is provided on the outer surface with a male screw that is screwed into a screw hole provided in the annular frame, and can be moved forward and backward from the inside of the annular frame toward the injection hole of the lining pipe by rotating. Since the backfilling material discharge port is provided in the vicinity of the outer front end portion of the rim, and the connection port that can be connected to one end of the backfilling material supply hose is provided at the inner base end portion of the annular frame, the supporting means The back frame supply hose is supported by supporting the annular frame in the lining pipe by advancing the tip of the hollow housing into the injection hole of the lining pipe and connecting one end of the backfill material supply hose to the connection port at the base end of the hollow housing. Existing from It can be left evenly injected filled with back-filling material into the gap between the 朽管 and lining pipe.
[0020]
In the existing aged pipe rehabilitation method of the present invention 4, the supporting apparatus according to the present invention 3 is inserted into a lining pipe newly installed in the existing aged pipe, and the annular frame of the supporting apparatus is newly installed by a supporting means. The hollow casing is advanced at the tip of the hollow casing into the injection hole of the lining pipe, and a backfilling material supply hose is connected to the connection port at the base end of the hollow casing. Since the backfilling material is discharged from the outlet and the backfilling material is filled in the gap between the existing aging pipe and the lining pipe, it is not necessary to install or remove the backfilling material injection nozzle mounting member as in the past. It is.
[0021]
The existing aging pipe rehabilitation method of the present invention 5 is the same as that of the present invention 4, in which the backfilling material is discharged from the backfilling material discharge port near the tip of the pair of hollow casings while balancing, and the backfilling material is discharged from the existing aging pipe. By filling the gap between the lining pipe and the lining pipe, it is modified so that the left and right gaps between the existing aging pipe and the lining pipe are made uniform during the injection of the backfilling material, and the backfilling material is put into the gap. Since it is possible to omit the process accurately and uniformly between the left and right sides of the existing aging pipe and the lining pipe in advance, the workability is excellent. Balanced lifting can be prevented.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing a usage mode of an example of a support apparatus according to the present invention.
In FIG. 1, A is a support device, 1 is an octagonal annular frame of the support device A, and the annular frame 1 is composed of a plurality of main members 11 and a bent joint 12, and both ends of the main member 11. The annular frame 1 is formed by being inserted and fitted into the receptacle of the bent joint 12. The size of the annular frame 1 can be changed by adjusting the insertion depth of the main member 11 into the bent joint 12 or by using the main member 11 having a different length.
[0023]
Reference numeral 2 denotes an existing aging pipe having a circular cross section to be rehabilitated, and 3 denotes a lining pipe having a circular cross section newly installed in the existing aging pipe 2. The lining tube 3 is a spiral tube formed by winding a strip in a spiral shape and connecting the edges of adjacent strips.
[0024]
Reference numerals 13 and 14 denote support means provided on the annular frame 1. The support means 13 is for supporting the annular frame 1 in the lining pipe 3. The support means 13 includes a housing 131 having a male screw on the outer surface and a contact member 133 having a housing receiver 132. The casing 131 is screwed into a screw hole provided in the main member 11 of the annular frame 1. A short-sided columnar spanner 1311 is provided at the inner end of the annular frame 1 of the casing 131, and the outer end of the outer frame 1 of the casing 131 is rotatably accommodated in the casing receiver 132.
[0025]
By rotating the casing 131 with the spanner 1311 at the base end of the casing 131 by the spanner, the casing 131 advances and retreats with respect to the annular frame 1, and by screwing the casing 131, the contact member 133 presses against the inner surface of the lining pipe 3. When the contact member 133 is loosened, the contact member 133 is separated from the inner surface of the lining pipe 3. The annular frame 1 is supported inside the lining pipe 3 by screwing the housing 131 of each support means 13.
[0026]
The support means 14 is for supporting the annular frame 1 in the lining pipe 3 and the existing aging pipe 2. The support means 14 includes a hollow housing 141 provided with an external thread on the outer surface and a contact member 143 provided with a screw hole fitting 142. The hollow housing 141 is screwed into a screw hole provided in the main member 11 and the screw hole fitting 142 of the annular frame 1. A connection port 1411 that can be connected to one end of the backfilling material supply hose 4 is provided at the inner base end portion of the annular frame 1 of the hollow housing 141, and a discharge port 1412 is provided at the distal end portion of the outer surface of the annular frame 1 of the hollow housing 141. Is provided. In addition, 41 is a coupler provided at one end of the hose 4, 42 is a valve connected to the coupler 41, and the valve 42 is connected to the connection port 1411.
[0027]
By rotating the hollow housing 141, the housing 131 moves forward and backward with respect to the annular frame 1 and the screw hole fitting 142, and by screwing the hollow housing 141, the tip of the hollow housing 141 passes through the injection hole 31 of the lining pipe 3 and is already installed. The annular frame 1 is supported by the inner surface of the aging pipe 2 and the annular frame 1 is supported by the existing aging pipe 2, and the contact member 143 is pressed by the inner surface of the lining pipe 3 by screwing the screw hole fitting 142 into the hollow housing 141. The annular frame 1 is supported on the inside of the lining pipe 3 so as to maintain the distance between the existing aging pipe 2 and the lining pipe 3. On the contrary, when the screw hole fitting 142 is loosened, the contact member 143 is separated from the inner surface of the lining pipe 3, and when the hollow housing 141 is loosened, the tip of the hollow housing 141 is separated from the inner surface of the existing aging pipe 2.
[0028]
Since the support apparatus A of the present invention shown in FIG. 1 has the above-described structure, the support apparatus A is inserted into the lining pipe 3 newly installed in the existing aged pipe 2 as shown in FIG. The support frame 13 supports the annular frame 1 of the support device A in the lining pipe 3, and the support means 14 supports the ring frame 1 in the existing aging pipe 2 and the lining pipe 3, and the existing aging pipe 2. And the lining pipe 3 can be kept at a distance.
[0029]
In this state, as shown in FIG. 1, the valve 42 provided at one end of the hose 4 is connected to the connection port 1411 at the base end of the hollow housing 141 of the support means 14, and the hose 4 is opened by opening the valve 42. The backfilling material 5 such as mortar is injected and filled into the gap between the existing aging pipe 2 and the lining pipe 3 from the discharge port 1412 at the tip of the housing 141 of the support means 14 as indicated by an arrow a.
[0030]
FIG. 2 is a cross-sectional view showing another example of use of the support device of the present invention.
The support device B shown in FIG. 2 is used for the existing aging pipe 2b and the lining pipe 3b having a square cross section.
[0031]
The octagonal annular frame 1b of the support device B is composed of a plurality of main members 11b and a bent joint 12b, and both ends of the main member 11b are inserted and fitted into the receiving ports of the bent joint 12b. 1b is formed.
[0032]
In the annular frame 1b of the support apparatus B, a screw hole is provided in the bent joint 12b, and the casing 131 and the hollow casing 141 of the support means 13 and 14 are screwed into the screw hole of the bent joint 12b. The housing receivers 132b and 142b are provided across the two contact members 133, 133, 143, and 143. Contact members 134, 144 are provided between the two contact members 133, 133, 143, 143, and the intermediate contact members 134, 144 are attached to the housing receivers 132b, 142b.
[0033]
In addition, the annular frame 1b of the support device B is provided with two support means 14 and 14 so as to form a symmetric pair with an upper portion in a plane orthogonal to the longitudinal direction of the existing aging pipe 2b. A valve 42 of the hose 4 is connected via a coupler 41 to a connection port 1411 at the base end portion of the hollow housing 141 of the support means 14. Since the other structure of the support apparatus B is the same as that of the support apparatus A shown in FIG. 1, description is abbreviate | omitted by attaching | subjecting the same code | symbol as the support apparatus A shown in FIG.
[0034]
Since the support device B of the present invention shown in FIG. 2 has the above-described structure, as shown in FIG. 2, the support device B is inserted into the lining pipe 3b newly installed in the existing aging pipe 2b. The support frame 13 supports the annular frame 1b of the support device B on the lining pipe 3b, and can maintain the distance between the existing aging pipe 2b and the lining pipe 3b.
[0035]
In such a state, as shown in FIG. 2, the valve 42 provided at one end of the hose 4 is connected to the connection port 1411 at the base end of the hollow housing 141 to each of the two support means 14, 14. By opening the valve 42, the backfilling material is uniformly discharged from the hose 4 through the discharge port 1412 at the tip of the hollow housing 141 of the support means 14 as indicated by the arrow a, and the existing aging pipe 2b and the lining pipe are discharged. 3b is injected and filled in the gap so as to be uniform left and right.
[0036]
FIG. 3 shows a state in which the backfilling material 5 is injected into the gap between the existing aging pipe 2 and the lining pipe 3 and then the injection hole 31 of the lining pipe 3 is plugged by the plugging member 6 as shown in FIG. FIG.
[0037]
The lining pipe 3 is configured by winding a strip 32 in a spiral shape. As shown in FIG. 4, the strip-shaped body 32 is provided with connecting protrusions 322 and connecting recesses 323 in the vicinity of both ends of one side of the substrate 321, and a rib 324 having a T-shaped cross section projects from the middle. A structure in which a reinforcing member having a W-shaped cross section is fitted between 324 is provided. By inserting and fitting the connecting ridges 322 of the adjacent strips 32 into the connecting recesses 323, the adjacent strips 32 and 32 are connected to each other to form a spiral tube. As shown in FIG. 4, the injection hole 31 of the lining pipe 3 is drilled using a cylindrical saw 7 provided with a saw blade at the tip.
[0038]
The plug member 6 is composed of a plug body 61 and a plug receiving member 62. As shown in FIG. 5, a male taper screw 611 is provided on the outer surface of the plug body 61. As shown in FIG. Hexagonal holes 612 are provided. The stopper receiving member 62 is configured such that a locking edge 622 is provided at one end of a short cylinder provided with a female taper screw 621 on the inner surface, and a flange 623 is provided at the other end.
[0039]
As shown in FIGS. 3 and 5, the plug receiving member 62 of the blocking member 6 is attached to the injection hole 31 of the lining pipe 3, and the male taper screw 611 of the plug body 61 is screwed into the female taper screw 621 of the plug receiving member 62. As a result, the injection hole 31 of the lining pipe 3 is closed. If a water-swellable bonding agent (trade name “Eslon High Sea 4” manufactured by Sekisui Chemical Co., Ltd.) is applied in advance to the female taper screw 621 of the plug receiving member 62 or the male taper screw 611 of the plug body 61, the water-stopping property can be obtained. Increased further.
[0040]
In FIG. 3, reference numeral 51 denotes a viscous cement or drainite filled in a trace where the casing 141 of the support device A is removed.
[0041]
3 and 5 includes a plug body 61 and a plug receiving member 62. Therefore, the plug receiving member 62 is attached to the injection hole 31 of the lining pipe 3, and the plug body 61 is screwed into the plug receiving member 62. Thus, the injection hole 31 of the lining pipe 3 can be easily blocked.
[0042]
FIG. 7 is a cross-sectional view showing a usage example of still another example of the support apparatus of the present invention. The support device C shown in FIG. 7 is used for the existing aging pipe 2c and lining pipe 3c having a substantially square cross section.
[0043]
The octagonal annular frame 1c of the support device C is composed of a plurality of main members 11c and a bent joint 12c, and both ends of the main member 11c are inserted and fitted into the receptacles of the bent joint 12c. 1c is formed.
[0044]
In the annular frame 1c of the support device C, a screw hole is provided in the bent joint 12c, and the housing 131 of the support means 13 is screwed into the screw hole of the bent joint 12c. The housing receiver 132 c is provided across the two contact members 133 and 133. A contact member 134 is provided between the two contact members 133 and 133, and the intermediate contact member 134 is attached to the housing receiver 132c.
[0045]
The annular frame 1c of the support device C is provided with two hollow casings 15 and 15 so as to form a symmetrical pair with the upper corner portion in the plane perpendicular to the longitudinal direction of the existing aging pipe 2c. A valve 42 of the hose 4 is connected to the connection port 151 at the base end portion of each hollow housing 15 via a coupler 41. Each hollow housing 15 is provided with a male screw screwed into a screw hole provided in the main member 11c of the annular frame 1c on the outer surface, and is a plane orthogonal to the longitudinal direction of the lining pipe 3c from the inside of the annular frame 1c by rotating. A backfilling material discharge port 152 is provided in the vicinity of the distal end portion, and the backfilling material discharge port 152 is provided in the vicinity of the distal end portion.
[0046]
Since the support apparatus C of the present invention shown in FIG. 7 has the above-described structure, as shown in FIG. 7, the support apparatus C is inserted into the lining pipe 3c newly installed in the existing aging pipe 2c. The supporting frame 13 supports the annular frame 1c of the support device C on the lining pipe 3c.
[0047]
In such a state, as shown in FIG. 8 (a), the two hollow casings 15 and 15 are rotated to advance from the inside of the annular frames 12c and 12c to the injection holes of the lining pipe 3c, respectively. The valves 42, 42 provided at one end of the hose 4 are connected to the connection ports 151, 151 at the base end of the hose 4, and the valves 42, 42 are opened, and the gap between the existing aging pipe 2c and the lining pipe 3c The filling material is discharged so that the left and right discharge amounts are substantially the same.
[0048]
At this time, the amount of backfilling material injected from the discharge ports 152, 152 to the left and right of the gap between the existing aging pipe 2c and the lining pipe 3c is managed so that the amount of backfilling material injected to the left and right is substantially the same. To manage. The left and right injection amount may be managed directly by the injection amount of the backfill material, or may be performed by a confirmation hole provided in the lining pipe 3c separately.
[0049]
As a result, as shown in FIG. 8B, when the left side of the gap between the existing aging pipe 2c and the lining pipe 3c is narrow, the height of the backfilling material 5 injected into the gap increases, and the lining Since the force F that moves to the right side acts on the pipe 3c, the right and left gaps between the existing aging pipe 2c and the lining pipe 3c are corrected to be uniform.
[0050]
On the contrary, as shown in FIG. 8C, when the right side of the gap between the existing aging pipe 2c and the lining pipe 3c is narrow, the height of the backfilling material 5 injected into the gap becomes high. Since a force F that moves to the right side acts on the lining pipe 3c, the left and right gaps between the existing aging pipe 2c and the lining pipe 3c are corrected to be uniform.
[0051]
In this way, as shown in FIGS. 8D to 8F, the left and right gaps between the existing aging pipe 2c and the lining pipe 3c are corrected to be uniform, and the left and right are uniform in the gap. The backfill material can be injected and filled as described above.
Thereby, the balance of the buoyancy acting in the left-right direction of the lining tube 3c can be balanced, and unbalanced lifting of the lining tube 3c during the backfilling material injection process can be prevented.
[0052]
〔Example〕
As shown in FIG. 1, the new lining pipe 3 is inserted into the existing aging pipe 2, the support device A is inserted into the new lining pipe 3, and the injection hole 31 is drilled in the new lining pipe 3. The device A is supported and installed by the support devices 13 and 14, and the backfill material 5 is supplied from the hose 4 to the housing 141 of the support device A, and the gap between the existing aging pipe 2 and the new lining pipe 3 is backed up. Material 5 was filled.
[0053]
Thereafter, the housing 141 is pulled out from the injection hole 31 into the new lining pipe 3 and the support apparatus A is removed from the inside of the new lining pipe 3, and as shown in FIG. Then, the plug receiving member 62 was attached to the injection hole 31 of the new lining pipe 3, and the plug body 61 was screwed into the plug receiving member 62 to close the injection hole 31 of the new lining pipe 3.
[0054]
The inner diameter D1 of the existing aging pipe 2 is 1500 mm, the outer diameter D2 of the newly installed lining pipe 3 is 1350 mm (FIG. 1), and the distance L between the connecting protrusion 322 and the connecting recess 323 of the strip 32 is 79 mm. The diameter D3 of the injection hole 31 of the lining pipe 3 is 50 mm (FIG. 4), and the installation interval of the support device A in the new lining pipe 3 is about 2 m.
[0055]
[Evaluation]
When a water pressure of 2.0 kg / cm @ 2 was applied to the inside and outside of the new lining pipe 3, water leakage did not occur.
[0056]
The embodiment of the present invention has been described above with reference to the drawings. However, the specific configuration of the present invention is not limited to the illustrated embodiment, and design changes within a scope that does not depart from the gist of the present invention can be made. include.
[0057]
As in the embodiment shown in FIG. 1, the annular frame 1 may use an integrated annular frame instead of the coverage 11 and the bent joint 12.
Further, the stopper member 62 of the blocking member 6 is attached to the injection hole 31 of the newly installed lining pipe 3 by fitting the stopper member 62 to the peripheral portion of the injection hole 31 as in the embodiment shown in FIGS. Instead of plugging, the stopper receiving member 62 may be bonded to the peripheral edge of the injection hole 31.
[0058]
【The invention's effect】
Since the supporting device in the existing aging pipe rehabilitation method of the present invention 1 is as described above, the support frame is used to support the annular frame in the existing aging pipe and the lining pipe, and the tip of the hollow housing is the injection hole of the lining pipe The gap between the existing aging pipe and the lining pipe from the backfilling material supply hose is connected to one end of the backfilling material supply hose at the base end of the hollow housing. The backfill material can be uniformly injected and filled.
[0059]
Since the existing aging pipe rehabilitation method of the present invention 2 is as described above, it is not necessary to attach and remove the attachment member of the backfilling material injection nozzle as in the prior art.
[0060]
Since the support device in the existing aging pipe rehabilitation method of the present invention 3 is as described above, the annular frame is supported in the lining pipe by the supporting means, and the tip of the hollow housing is matched with the injection hole of the lining pipe, By connecting one end of the backfilling material supply hose to the connection port at the base end of the hollow housing, the backfilling material is uniformly injected from the backfilling material supply hose into the gap between the existing aging pipe and the lining pipe. Can do.
[0061]
Since the existing aging pipe rehabilitation method of the present invention 4 is as described above, it is not necessary to attach and remove the attachment member of the backfilling material injection nozzle as in the prior art.
[0062]
Since the existing aging pipe rehabilitation method of the present invention 5 is as described above, the gap between the existing aging pipe and the lining pipe is corrected to be uniform while the backfilling material is being injected. It is possible to inject and fill the backfilling material in the inside, and it is excellent in workability because the process can be omitted accurately and uniformly in the distance between the left and right of the existing aging pipe and the lining pipe in advance. Unbalanced lifting of the lining pipe can also be prevented.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a usage mode of an example of a support apparatus according to the present invention.
FIG. 2 is a cross-sectional view showing a usage example of another example of the support apparatus according to the present invention.
FIG. 3 is an enlarged cross-sectional view showing a usage mode of a hole closing member according to the present invention.
FIG. 4 is a cross-sectional view showing a mode in which an injection hole is drilled in a lining pipe.
FIG. 5 is an exploded cross-sectional view showing, in an enlarged manner, a usage mode of the obturator member according to the present invention shown in FIG.
6 is a bottom view of the plug receiving member of the obturator member according to the present invention shown in FIG. 3. FIG.
FIG. 7 is a cross-sectional view showing a usage example of still another example of the support apparatus according to the present invention.
8 is an explanatory view of the existing aging pipe rehabilitation method of the present invention using the support apparatus shown in FIG. 7, wherein (a) to (f) are cross sections for explaining sequentially from the first process to the final process. FIG.
FIG. 9 is an explanatory view showing a conventional existing aging pipe rehabilitation method.
FIG. 10 is an explanatory view showing a conventional existing aging pipe rehabilitation method.
[Explanation of symbols]
A, B, C Support equipment
1, 1b, 1c annular frame
2, 2b, 2c Existing aging pipe
3, 2c, 3c lining pipe
4 Hose
11, 11b, 11c Main member
12, 12b, 12c Bent joint
13, 14 Support means
15, 141 Hollow housing
31 Injection hole
41 coupler
42 Valve
1411 connection port
152, 1412 outlet
131
132
133, 143 Contact member

Claims

Support in the existing aging pipe rehabilitation method having an annular frame inserted into a lining pipe newly installed in an existing aging pipe having a substantially square cross section and a supporting means for supporting the annular frame in the existing aging pipe and the lining pipe. In the construction apparatus, at least a part of the support means for supporting the annular frame in the existing aging pipe forms a symmetrical pair with an upper portion in a plane orthogonal to the longitudinal direction of the existing aging pipe. The supporting means disposed and paired with each other have a hollow housing provided on the outer surface with a male screw screwed into a screw hole provided in the annular frame, and rotating the hollow housing causes the annular frame to rotate. It is possible to advance and retreat from the inside toward the outside, and a backfilling material discharge port is provided near the outer end of the annular frame of the hollow casing, and the backfilling material is provided at the inner end of the annular frame of the hollow casing Supply hose Shoring device in existing old pipe rehabilitation method characterized by comprising from those connection ports can be connected to the end is provided.

An existing aging pipe rehabilitation method using the support apparatus according to claim 1 , wherein the support apparatus according to claim 1 is inserted into a lining pipe newly installed in the existing aging pipe, and the ring of the support apparatus is inserted. The frame is supported by the supporting means in the existing aging pipe and the new lining pipe, the distal end of the hollow casing is inserted through the injection hole of the lining pipe and is brought into pressure contact with the inner surface of the existing aging pipe, and the base end of the hollow casing is Connect the backfilling material supply hose to the connection port, discharge the backfilling material from the backfilling material discharge port near the tip of the hollow housing, and fill the backfilling material into the gap between the existing aging pipe and the lining pipe An existing aging pipe rehabilitation method characterized by

A support apparatus in an existing aging pipe rehabilitation method having an annular frame inserted into a lining pipe newly installed in an existing aging pipe having a substantially square cross section, and a supporting means for supporting the annular frame in the lining pipe. The hollow housings are arranged so as to form a symmetric pair in the upper part of the plane perpendicular to the longitudinal direction of the existing aging pipe, and the hollow housings forming the pair are arranged in the screw holes provided in the annular frame. A male screw to be screwed is provided on the outer surface, and by rotating, it can be advanced and retracted from the inside of the annular frame toward the injection hole of the lining pipe, and a backfilling material discharge port is provided in the vicinity of the outer end of the annular frame. A supporting device in an existing aging pipe rehabilitation method, characterized in that a connection port that can be connected to one end of a backfilling material supply hose is provided at a base end portion inside the annular frame.

An existing aging pipe rehabilitation method using the support apparatus according to claim 3 , wherein the support apparatus according to claim 3 is inserted into a lining pipe newly installed in the existing aging pipe, and the ring of the support apparatus is inserted. The frame is supported in a newly formed lining pipe by support means, the tip of the hollow casing is advanced into the injection hole of the lining pipe, a backfilling material supply hose is connected to the connection port of the base end of the hollow casing, An existing aging pipe rehabilitation method characterized in that the back filling material is discharged from the back filling material discharge port near the tip of the hollow casing, and the back filling material is filled in a gap between the existing aging pipe and the lining pipe.

The backfilling material is discharged from the backfilling material discharge port near the tip of the pair of hollow casings while balancing, and the backfilling material is filled in the gap between the existing aging pipe and the lining pipe. The existing aged pipe rehabilitation method according to claim 4 .