JP4528520B2

JP4528520B2 - Branch pipe repair material

Info

Publication number: JP4528520B2
Application number: JP2003413062A
Authority: JP
Inventors: 雄司今▲崎▼; 正治内藤
Original assignee: 株式会社メーシック; 旭テック環境ソリューション株式会社
Priority date: 2003-12-11
Filing date: 2003-12-11
Publication date: 2010-08-18
Anticipated expiration: 2023-12-11
Also published as: JP2005172134A

Description

本発明は、下水の本管に分岐して接続されている枝管を補修するための枝管用補修材に関するものである。 The present invention relates to a branch pipe for repair material for repairing a branch pipe which is branched and connected to the main sewage.

各家庭等の下水道、排水管等の排水施設は、公共桝等を介して枝管から地中に埋設されている本管に接続されている。かかる枝管が老朽化したり破損した場合の補修として、硬化性の樹脂が含浸された硬化層を含んで構成された可撓性のある筒状の枝管用補修材を用い、この枝管用補修材の一端を反転させて、枝管の地上側開口部に配置した枠体の支持部に支持させ、前記反転させた枝管用補修材の中に水を入れて、その自重により枝管用補修材を下降させ、反転させた枝管用補修材が枝管の下端を過ぎて本管の内壁に達したことを確認してから、枝管用補修材内に温水を入れ、該枝管用補修材を加熱して硬化層を硬化させ、該枝管用補修材の硬化層が硬化したら、前記枝管用補修材の中に入れた温水を地上側へ排出した後、本管内に配置したＴＶカメラにより本管内に突出した枝管用補修材を確認しながら、本管内に配置したカッターロボットのカッターで前記本管内に突出した枝管用補修材を切断するようにした方法が知られている（例えば、特許文献１参照。）。
特開平６−２３４１６０号公報 The drainage facilities such as sewers and drainage pipes of each household are connected from the branch pipes to the main pipes buried in the ground through public pits. As a repair when such a branch pipe is aged or damaged, a flexible cylindrical branch pipe repair material configured to include a hardened layer impregnated with a curable resin is used. One end of the branch pipe is inverted and supported by the support portion of the frame body arranged at the ground side opening of the branch pipe, and water is put into the inverted branch pipe repair material, and the branch pipe repair material is placed by its own weight. After confirming that the branch pipe repair material that has been lowered and reversed has reached the inner wall of the main pipe past the lower end of the branch pipe, hot water is poured into the branch pipe repair material, and the branch pipe repair material is heated. When the hardened layer is cured and the hardened layer of the branch pipe repair material is hardened, the warm water put in the branch pipe repair material is discharged to the ground side, and then protrudes into the main pipe by a TV camera arranged in the main pipe. While checking the branch pipe repair material, the cutter robot placed in the main pipe Serial method so as to cut the branch pipe repair material protruding to the pipe is known (e.g., see Patent Document 1.).
JP-A-6-234160

しかしながら、このような従来の枝管の補修方法では、枝管用補修材の一端を反転させて、枝管の地上側開口部に配置した枠体の支持部に支持させ、反転させた枝管用補修材の中に水を入れて、その自重により枝管用補修材を順次反転させながら枝管内に通すので、枝管用補修材を反転させるための装置が大掛かりとなり、また作業も面倒なものとなっている。また、前記反転しながら枝管内に通され本管の内壁に達した後、枝管用補修材内に温水が入れられ、該枝管用補修材が加熱して硬化層が硬化するが、このとき反転した枝管用補修材内には反転していない枝管用補修材が残っており、この反転していない枝管用補修材の硬化層も硬化してしまうため、この部分が捨てられるものとなり枝管用補修材の無駄が多く、非常に不経済である、といった問題があった。 However, in such a conventional branch pipe repair method, one end of the branch pipe repair material is inverted and supported by the support portion of the frame body arranged in the ground side opening of the branch pipe, and the inverted branch pipe repair is performed. Since water is put into the material and the repair material for the branch pipe is sequentially reversed by its own weight and passed through the branch pipe, the apparatus for reversing the repair material for the branch pipe becomes large and the work becomes troublesome. Yes. Moreover, after passing through the branch pipe while reversing and reaching the inner wall of the main pipe, hot water is put into the repair material for the branch pipe, and the repair material for the branch pipe is heated to harden the hardened layer. In the branch pipe repair material, there is a branch pipe repair material that has not been inverted, and the hardened layer of the branch pipe repair material that has not been inverted will also harden, so this part will be discarded and the branch pipe repair will be performed. There was a problem that a lot of material was wasted and it was very uneconomical.

本発明の目的は、大掛かりな装置を用いずに且つ容易に枝管を補修できる枝管用補修材を提供することにある。 The objective of this invention is providing the repair material for branch pipes which can repair a branch pipe easily, without using a large-scale apparatus.

本発明の他の目的は、経済的に使用できる枝管用補修材を提供することにある。 Another object of the present invention is to provide a branch pipe repair material that can be used economically.

上記の目的を達成できる枝管用補修材を説明すると、次の通りである。 The branch pipe repair material capable of achieving the above object will be described as follows.

請求項１に記載の枝管用補修材は、外周面に配置されたアウター層と内周面に配置されたインナー層とこれら両層の間に配置された硬化性の樹脂を含浸する硬化層を含んで構成された可撓性のある筒状の補修材本体からなり、該補修材本体の少なくともインナー層の先端が封止されている枝管用補修材であって、前記補修材本体は、インナー層と硬化層が剥離する積層構造となっており、該補修材本体内に、前記補修材本体を先端方向に押し出し且つ補修材本体のインナー層の先端を封止する封止部を引き上げる引き上げ部材が通され、その先端が前記インナー層の先端の封止部に接続されており、前記インナー層の先端の封止部は、インナー層の先端に固定された状態で取り付けられた栓体からなり、該栓体に前記引き上げ部材の先端が接続され、前記栓体は、弁孔が前後に貫通して設けられた栓体本体と、前進して弁孔を塞ぎ後退して開く弁体とからなり、該弁体に前記引き上げ部材が接続され、引き上げ部材の引き出しにより前記弁体が後退し弁孔が開かれ且つ弁体を介して栓体本体が引き上げられるようになっていることを特徴とする。 The branch pipe repair material according to claim 1 includes an outer layer disposed on the outer peripheral surface, an inner layer disposed on the inner peripheral surface, and a cured layer impregnated with a curable resin disposed between the two layers. A branch pipe repair material comprising a flexible cylindrical repair material body configured to include at least a tip of an inner layer of the repair material body, wherein the repair material body includes an inner A lifting member that has a laminated structure in which a layer and a hardened layer are peeled off, pushes out the repair material body in the distal direction in the repair material body, and pulls up a sealing portion that seals the distal end of the inner layer of the repair material body The tip of the inner layer is connected to the sealing portion at the tip of the inner layer, and the sealing portion at the tip of the inner layer is made of a plug attached in a state of being fixed to the tip of the inner layer. The tip of the lifting member is in contact with the plug. The plug body includes a plug body having a valve hole penetrating in the front-rear direction and a valve body that moves forward to close the valve hole and retreats, and the lifting member is connected to the valve body. The valve body is retracted by pulling out the lifting member, the valve hole is opened, and the plug body is pulled up through the valve body .

請求項２に記載の枝管用補修材は、前記請求項１に記載の、前記補修材本体の先端における少なくともインナー層の先端の封止位置近傍には、アウター層と硬化層とを切断する切断部が周方向に設けられていることを特徴とする。 The branch pipe repair material according to claim 2 is a cut that cuts the outer layer and the hardened layer at least near the sealing position of the tip of the inner layer at the tip of the repair material body according to claim 1. The portion is provided in the circumferential direction.

請求項１に記載の枝管用補修材は、外周面に配置されたアウター層と内周面に配置されたインナー層とこれら両層の間に配置された硬化性の樹脂を含浸する硬化層を含んで構成された可撓性のある筒状の補修材本体からなり、該補修材本体の少なくともインナー層の先端が封止されている枝管用補修材であって、前記補修材本体は、インナー層と硬化層が剥離する積層構造となっており、該補修材本体内に、前記補修材本体を先端方向に押し出し且つ補修材本体のインナー層の先端を封止する封止部を引き上げる引き上げ部材が通され、その先端が前記インナー層の先端の封止部に接続されているので、補修材本体を枝管内に通す際に、封止されている先端側から枝管に挿入された補修材本体はその自重により、軽く押すだけで枝管内を通り本管内に達し、従来のように枝管用補修材を反転させて枝管内を通すための大掛かりな装置は必要とせず、簡単な作業で容易に且つ短時間で枝管内に補修材本体を通すことができる。そして、補修材本体の封止されている先端が本管内に突出した段階で該補修材本体を膨らませ、前記枝管の内周に密着させた状態で前記補修材本体の前記硬化層を硬化させ、引き上げ部材で封止部を引き上げることにより、枝管内にアウター層と硬化層を残してインナー層を硬化層から剥離して回収し、その後、前記本管内に突出している補修材本体の先端を切断して開口させることにより枝管の補修を行うことができる。本発明では、前記のように枝管内にアウター層と硬化層を残してインナー層を硬化層から剥離して回収することができるので、枝管に密着した硬化層に積層したインナー層が硬化層から剥離し易い状態で枝管内に残ることによる不都合を未然に解消することができる。 The branch pipe repair material according to claim 1 includes an outer layer disposed on the outer peripheral surface, an inner layer disposed on the inner peripheral surface, and a cured layer impregnated with a curable resin disposed between the two layers. A branch pipe repair material comprising a flexible cylindrical repair material body configured to include at least a tip of an inner layer of the repair material body, wherein the repair material body includes an inner A lifting member that has a laminated structure in which a layer and a hardened layer are peeled off, pushes out the repair material body in the distal direction in the repair material body, and pulls up a sealing portion that seals the distal end of the inner layer of the repair material body Since the tip is connected to the sealing portion at the tip of the inner layer , when the repair material body is passed through the branch pipe, the repair material inserted into the branch pipe from the sealed tip side The main body passes through the branch pipe just by pushing lightly due to its own weight. There is no need for a large device to reach the inside of the pipe and to reverse the branch pipe repair material and pass it through the branch pipe as in the past, and the repair material body can be passed through the branch pipe easily and in a short time with a simple operation. it can. Then, the repair material body is expanded when the sealed tip of the repair material body protrudes into the main pipe, and the cured layer of the repair material body is cured in a state of being in close contact with the inner periphery of the branch pipe. By pulling up the sealing portion with a lifting member, the outer layer and the hardened layer are left in the branch pipe, and the inner layer is peeled off and recovered from the hardened layer, and then the tip of the repair material body protruding into the main pipe is removed. The branch pipe can be repaired by cutting and opening. In the present invention, as described above, the outer layer and the hardened layer are left in the branch pipe, and the inner layer can be separated from the hardened layer and recovered. Therefore, the inner layer laminated on the hardened layer in close contact with the branch pipe is the hardened layer. Inconvenience due to remaining in the branch pipe in a state where it can be easily peeled off can be eliminated.

また、前記インナー層の先端の封止部は、インナー層の先端に固定された状態で取り付けられた栓体からなり、該栓体に前記引き上げ部材の先端が接続されているので、補修材本体を枝管内に通す際に、封止されている先端側から枝管に挿入された補修材本体は、その自重により軽く押すだけで枝管内を通り本管内に達し、従来のように枝管用補修材を反転させて枝管内を通すための大掛かりな装置は必要とせず、簡単な作業で容易に且つ短時間で枝管内に補修材本体を通すことができる。そして、補修材本体の封止されている先端が本管内に突出した段階で該補修材本体を膨らませ、前記枝管の内周に密着させた状態で前記補修材本体の前記硬化層を硬化させ、引き上げ部材で栓体を引き上げることにより、枝管内にアウター層と硬化層を残してインナー層を硬化層から剥離して回収し、その後、前記本管内に突出している補修材本体の先端を切断して開口させることにより枝管の補修を行うことができる。本発明では、前記のように枝管内にアウター層と硬化層を残してインナー層を硬化層から剥離して回収することができるので、枝管に密着した硬化層に積層したインナー層が硬化層から剥離し易い状態で枝管内に残ることによる不都合を未然に解消することができる。 Further , the sealing portion at the tip of the inner layer is composed of a plug attached in a state fixed to the tip of the inner layer, and the tip of the lifting member is connected to the plug, so that the repair material body The repair material body inserted into the branch pipe from the sealed tip side passes through the branch pipe and reaches the main pipe just by lightly pushing the branch pipe through the branch pipe. A large-scale device for reversing the material and passing it through the branch pipe is not required, and the repair material body can be passed through the branch pipe easily and in a short time with a simple operation. Then, the repair material body is expanded when the sealed tip of the repair material body protrudes into the main pipe, and the cured layer of the repair material body is cured in a state of being in close contact with the inner periphery of the branch pipe. By pulling up the plug body with the lifting member, the outer layer and the hardened layer are left in the branch pipe, and the inner layer is peeled off and recovered from the hardened layer, and then the tip of the repair material body protruding into the main pipe is cut. Then, the branch pipe can be repaired by opening it. In the present invention, as described above, the outer layer and the hardened layer are left in the branch pipe, and the inner layer can be separated from the hardened layer and recovered. Therefore, the inner layer laminated on the hardened layer in close contact with the branch pipe is the hardened layer. Inconvenience due to remaining in the branch pipe in a state where it can be easily peeled off can be eliminated.

さらに、前記栓体は、弁孔が前後に貫通して設けられた栓体本体と、前進して弁孔を塞ぎ後退して開く弁体とからなり、該弁体に前記引き上げ部材が接続され、引き上げ部材の引き出しにより前記弁体が後退し弁孔が開かれ且つ弁体を介して栓体本体が引き上げられるようになっているので、アウター層を枝管の内面に密着させた状態で硬化層を硬化させた後に栓体を引き上げると、弁体が後退して弁孔が開き、例えば、補修材本体に水が入っているような場合、この水を前記弁孔から自然流下により本管内に排出することができる。 Further , the plug body includes a plug body having a valve hole penetrating in the front-rear direction, and a valve body that moves forward to close the valve hole and retreats, and the lifting member is connected to the valve body. Since the valve body is retracted by pulling the lifting member, the valve hole is opened, and the plug body is pulled up via the valve body, the outer layer is hardened in close contact with the inner surface of the branch pipe. When the plug is pulled up after the layer is hardened, the valve body retreats and the valve hole opens.For example, when water is contained in the repair material body, the water is naturally flowed from the valve hole into the main pipe. Can be discharged.

請求項２に記載の枝管用補修材は、前記請求項１に記載の、前記補修材本体の先端における少なくともインナー層の先端の封止位置近傍には、アウター層と硬化層とを切断する切断部が周方向に設けられているので、補修材本体を枝管内に通し、その先端を本管内に突出させる際に、前記切断部が枝管の下端開口部に達した位置で、アウター層を枝管の内面に密着させた状態で硬化層を硬化させ、しかる後に引き上げ部材によりインナー層の先端の封止部を引き上げると、アウター層と硬化層が残り、前記本管内に突出しているアウター層と硬化層に設けられた前記切断部は、枝管の下端開口部と一致する位置にあり、従って、前記インナー層の先端の封止部の引き上げにより、前記本管内に突出している補修材本体の先端は、枝管の下端開口部と一致する位置にある切断部から分離して本管内に落下し、前記補修材本体の先端が開口し、或いは、本管内に突出している補修材本体の先端が分離しない場合は、該先端に軽い衝撃を加えることにより容易に分離させ、補修材本体の先端を開口させることができるので、本管内に補修材本体の先端を切断するカッターロボット等を配置する必要がない。 The branch pipe repair material according to claim 2 is a cut that cuts the outer layer and the hardened layer at least near the sealing position of the tip of the inner layer at the tip of the repair material body according to claim 1. Since the part is provided in the circumferential direction, when the repair material body is passed through the branch pipe and its tip protrudes into the main pipe, the outer layer is placed at the position where the cutting part reaches the lower end opening of the branch pipe. When the hardened layer is cured in close contact with the inner surface of the branch pipe, and then the sealing portion at the tip of the inner layer is pulled up by the lifting member, the outer layer and the hardened layer remain, and the outer layer protrudes into the main pipe The cut portion provided in the hardened layer is in a position that coincides with the lower end opening of the branch pipe, and therefore the repair material main body protrudes into the main pipe by pulling up the sealing part at the tip of the inner layer. The tip of If the tip of the repair material main body is separated from the cutting portion at a position coincident with the portion and falls into the main pipe and the tip of the repair material main body is opened or the tip of the repair material main body protruding into the main pipe is not separated, the tip Since the tip of the repair material body can be opened easily by applying a light impact to the main body, it is not necessary to arrange a cutter robot or the like for cutting the tip of the repair material body in the main pipe.

図１、図２は本発明に係る枝管用補修材の第１参考例を示すもので、図１は第１参考例の枝管用補修材を枝管に挿入して通す過程を示す縦断面図、図２は第１参考例の枝管用補修材の先端が本管に到達した後、膨出させ硬化させた枝管用補修材の先端を切断する状態を示す縦断面図である。 1, 2 show a first reference example of the branch pipe repair material according to the present invention, FIG. 1 is a longitudinal sectional view showing a process of passing by inserting a branch pipe for repairing material of the first reference example in branch pipe FIG. 2 is a longitudinal sectional view showing a state in which the tip of the branch pipe repair material bulged and hardened after the tip of the branch pipe repair material of the first reference example reaches the main pipe is cut.

第１参考例で用いる枝管用補修材１は、外周面に配置された不透過性のアウター層２と内周面に配置された不透過性のインナー層３とこれら両層の間に配置された繊維質材料に硬化性樹脂が含浸された硬化層４を含んで構成された可撓性のある筒状の補修材本体５からなっている。前記補修材本体５を構成するインナー層３と硬化層４とは層間剥離しない積層構造となっている。 A branch pipe repair material 1 used in the first reference example is disposed between an impermeable outer layer 2 disposed on an outer peripheral surface, an impermeable inner layer 3 disposed on an inner peripheral surface, and both layers. It consists of a flexible cylindrical repair material body 5 that includes a cured layer 4 in which a fibrous material is impregnated with a curable resin. The inner layer 3 and the hardened layer 4 constituting the repair material body 5 have a laminated structure that does not delaminate.

前記アウター層２は、不浸透性フィルム素材により形成されており、不浸透性フィルム素材としてポリエチレンフィルムが使用されているが、不浸透性を備えたものであれば特に限定されるものではない。また、インナー層３は、不透過性フィルム素材により形成されており、不透過性フィルム素材としてポリウレタンフィルムが使用されているが、不透過性を備えたものであれば特に限定されるものではない。 The outer layer 2 is formed of an impermeable film material, and a polyethylene film is used as the impermeable film material. However, the outer layer 2 is not particularly limited as long as it is impermeable. The inner layer 3 is made of an impermeable film material, and a polyurethane film is used as the impermeable film material. However, the inner layer 3 is not particularly limited as long as it is impermeable. .

また、硬化層４は、樹脂吸収性素材に硬化性樹脂が含浸されたもので構成されている。前記樹脂吸収性素材として、本例では不織布が使用されているが、硬化性樹脂を含浸でき且つ可撓性を備えたものであれば特に限定されるものではなく、不織布以外の繊維素材や発泡シートであってもよい。 The hardened layer 4 is composed of a resin absorbent material impregnated with a hardenable resin. In the present example, a nonwoven fabric is used as the resin-absorbing material, but it is not particularly limited as long as it can be impregnated with a curable resin and has flexibility. It may be a sheet.

また、前記硬化性樹脂としては、熱硬化性樹脂、光硬化性樹脂、常温硬化性樹脂等の樹脂が使用される。熱硬化性樹脂としては不飽和ポリエステル樹脂が使用され、光硬化性樹脂としてはビニルエステル樹脂が使用され、常温硬化性樹脂としてはエポキシ樹脂が使用されるが、これらに限定されるものではない。 Further, as the curable resin, a resin such as a thermosetting resin, a photocurable resin, or a room temperature curable resin is used. An unsaturated polyester resin is used as the thermosetting resin, a vinyl ester resin is used as the photocurable resin, and an epoxy resin is used as the room temperature curable resin, but is not limited thereto.

前記のように構成された補修材本体５の先端は封止され封止部６となっている。この補修材本体５の先端を封止する手段にあっては特に限定されるものではない。 The front end of the repair material main body 5 configured as described above is sealed to form a sealing portion 6. The means for sealing the tip of the repair material body 5 is not particularly limited.

次に、上記のように構成された枝管用補修材１を用いた枝管の補修方法について説明する。 Next, a branch pipe repair method using the branch pipe repair material 1 configured as described above will be described.

先ず、地下に埋設された本管７から分岐し、地上に開口する桝８に接続する枝管９に、枝管用補修材１である補修材本体５を膨らませていない状態で封止した先端を桝８側から挿入する。このとき、補修材本体５は膨ませていないので、補修材本体５と枝管９の内周面との間に十分な隙間があり、前記補修材本体５は下方にある本管７に向かう枝管９に沿って、自重により軽く押すだけで枝管９内を通る。このとき、補修材本体５の外周面に滑剤を塗布しておくと、より容易に枝管９内を通すことができる（図１）。 First, a tip that branches off from a main pipe 7 buried underground and is connected to a gutter 8 that opens to the ground is sealed with the repair material body 5 that is the repair material 1 for the branch pipe not inflated.から Insert from side 8 At this time, since the repair material main body 5 is not inflated, there is a sufficient gap between the repair material main body 5 and the inner peripheral surface of the branch pipe 9, and the repair material main body 5 is directed to the main pipe 7 below. Along the branch pipe 9, it passes through the branch pipe 9 simply by pushing lightly by its own weight. At this time, if a lubricant is applied to the outer peripheral surface of the repair material body 5, it can pass through the branch pipe 9 more easily (FIG. 1).

前記枝管９に挿入した補修材本体５の封止されている先端が本管７内に突出したことを本管７内に配置したテレビカメラ１０で確認したら、該補修材本体５を膨らませて前記枝管９の内周に密着させ、この状態で前記補修材本体５の前記硬化層４を硬化させる。 When it is confirmed by the TV camera 10 disposed in the main pipe 7 that the sealed tip of the repair material main body 5 inserted into the branch pipe 9 protrudes into the main pipe 7, the repair material main body 5 is inflated. The hardened layer 4 of the repair material body 5 is hardened in close contact with the inner periphery of the branch pipe 9.

前記補修材本体５を膨らませる手段及び前記補修材本体５の前記硬化層４を硬化させる手段にあっては、例えば、前記硬化層４の硬化性樹脂が熱硬化性樹脂である場合、補修材本体５内に水を充填して膨らませ、次に補修材本体５内の水を循環させながらボイラー等で加熱して硬化層４の熱硬化性樹脂を硬化させる。或いは、補修材本体５内に蒸気や高温空気を送り込んで膨らませると同時に、蒸気や高温空気の熱により硬化層４の熱硬化性樹脂を硬化させるようにしてもよい。 In the means for expanding the repair material body 5 and the means for curing the cured layer 4 of the repair material body 5, for example, when the curable resin of the cured layer 4 is a thermosetting resin, the repair material The main body 5 is filled with water and inflated, and then the thermosetting resin of the hardened layer 4 is cured by heating with a boiler or the like while circulating the water in the repair material main body 5. Or you may make it harden the thermosetting resin of the hardened layer 4 with the heat | fever of a vapor | steam or high temperature air simultaneously with sending a vapor | steam or high temperature air into the repair material main body 5, and making it swell.

また、前記硬化層４の硬化性樹脂が光硬化性樹脂である場合、補修材本体５内に空気を充填して膨らませ、次に補修材本体５内に紫外線を照射して硬化層４の光硬化性樹脂を硬化させる。 Further, when the curable resin of the cured layer 4 is a photocurable resin, the repair material main body 5 is filled with air and inflated, and then the repair material main body 5 is irradiated with ultraviolet rays so that the light of the cured layer 4 is irradiated. Curing the curable resin.

また、前記硬化層４の硬化性樹脂が常温硬化性樹脂である場合、補修材本体５内に空気を充填して膨らませ、この状態で所定時間放置して硬化層４の常温硬化性樹脂を硬化させる。 When the curable resin of the cured layer 4 is a room temperature curable resin, the repair material body 5 is filled with air and inflated, and left in this state for a predetermined time to cure the room temperature curable resin of the cured layer 4. Let

このようにして枝管９に挿入した補修材本体５が本管７の内周に密着した状態で硬化層４が硬化したら、枝管９から本管７内に突出している補修材本体５の封止されている先端を、本管７内に配置したカッター１１により切断して開口させる（図２）。これにより、第１参考例の枝管用補修材１により枝管９の補修が終了する。なお、この補修材本体５の封止されている先端の切断に先立ち、補修材本体５内に水が入っている場合は、適宜の手段により前記水を回収し、或いは本管７内に排水する。 When the hardened layer 4 is cured in a state where the repair material body 5 inserted into the branch pipe 9 is in close contact with the inner periphery of the main pipe 7, the repair material main body 5 protruding from the branch pipe 9 into the main pipe 7. The sealed tip is cut and opened by a cutter 11 arranged in the main pipe 7 (FIG. 2). Thereby, the repair of the branch pipe 9 is completed by the branch pipe repair material 1 of the first reference example. Prior to cutting the sealed tip of the repair material body 5, when water is contained in the repair material body 5, the water is collected by appropriate means or drained into the main pipe 7. To do.

図３、図４は本発明に係る枝管用補修材の第２参考例を示すもので、図３は第２参考例の枝管用補修材を枝管に挿入して通し、その先端が本管に到達した状態を示す縦断面図、図４は第２参考例の枝管用補修材の先端が本管に到達した後、膨出させ硬化させた硬化層からインナー層を剥離して補修材本体外に回収する状態を示す縦断面図である。 3 and 4 show a second reference example of the branch pipe repair material according to the present invention. FIG. 3 shows the branch pipe repair material of the second reference example inserted into the branch pipe, and the tip of the repair pipe is passed through the main pipe. FIG. 4 is a longitudinal sectional view showing the state of reaching the main body. FIG. 4 shows the repair material body by peeling the inner layer from the hardened layer which has been bulged and hardened after the tip of the branch pipe repair material of the second reference example reaches the main pipe. It is a longitudinal cross-sectional view which shows the state collect | recovered outside.

本例で用いる枝管用補修材１は、前記第１参考例と同様に、外周面に配置された不浸透性のアウター層２と内周面に配置された不透過性のインナー層３とこれら両層の間に配置された繊維質材料に硬化性樹脂が含浸された硬化層４を含んで構成された可撓性のある筒状の補修材本体５からなっているが、前記補修材本体５を構成するインナー層３と硬化層４とは層間剥離する積層構造となっている。そして、該補修材本体５内に、補修材本体５の先端の封止部６を引き上げる引き上げ部材１２が通され、その先端が前記補修材本体５の先端の封止部６に固定されている。前記引き上げ部材１２にあっては、例えばフレキシブル鋼線、ピアノ線、塩化ビニル線、グラスファイバー、フレキシブルパイプ等のフレキシブルな棒状や管状の部材を用いる。 The branch pipe repair material 1 used in this example includes an impermeable outer layer 2 disposed on the outer peripheral surface and an impermeable inner layer 3 disposed on the inner peripheral surface, as in the first reference example. The repair material body includes a flexible cylindrical repair material body 5 including a cured layer 4 in which a fibrous material disposed between both layers is impregnated with a curable resin. The inner layer 3 and the hardened layer 4 constituting 5 have a laminated structure in which the layers are separated. A lifting member 12 for pulling up the sealing portion 6 at the tip of the repair material body 5 is passed through the repair material body 5, and the tip is fixed to the sealing portion 6 at the tip of the repair material body 5. . In the raising member 12, for example, a flexible rod-like or tubular member such as a flexible steel wire, piano wire, vinyl chloride wire, glass fiber, or flexible pipe is used.

また、前記補修材本体５は、前記先端の封止部近傍に、前記アウター層２と前記硬化層４とを周方向に切断する切断部１３が設けられている。 Further, the repair material body 5 is provided with a cutting portion 13 that cuts the outer layer 2 and the hardened layer 4 in the circumferential direction in the vicinity of the sealing portion at the tip.

先ず、第１参考例と同様に、枝管用補修材１である補修材本体５を膨らませていない状態で封止した先端を桝８側から枝管９内に挿入する。このとき、補修材本体５は膨ませていないので、補修材本体５と枝管９の内周面との間に十分な隙間があり、前記補修材本体５は下方にある本管７に向かう枝管９に沿って、自重により軽く押すだけで枝管９内を通る。このとき、補修材本体５の外周面に滑剤を塗布しておくと、より容易に枝管９内を通すことができる（図３）。このとき、前記補修材本体５内に通され、その先端が補修材本体５の先端の封止部６に固定されている引き上げ部材１２が、例えばフレキシブル鋼線、ピアノ線等といった剛性を有するものである場合は、その剛性を利用して補修材本体５を枝管９内に通す際に、前記引き上げ部材１２により補修材本体５を押すことにより、補修材本体５を一層容易に枝管９内を通すことができる。 First, similarly to the first reference example, the distal end of the repair material main body 5 which is the repair material 1 for branch pipes is inserted into the branch pipe 9 from the side of the flange 8 without being inflated. At this time, since the repair material main body 5 is not inflated, there is a sufficient gap between the repair material main body 5 and the inner peripheral surface of the branch pipe 9, and the repair material main body 5 is directed to the main pipe 7 below. Along the branch pipe 9, it passes through the branch pipe 9 simply by pushing lightly by its own weight. At this time, if a lubricant is applied to the outer peripheral surface of the repair material body 5, it can pass through the branch pipe 9 more easily (FIG. 3). At this time, the lifting member 12 that is passed through the repairing material main body 5 and whose tip is fixed to the sealing part 6 at the tip of the repairing material main body 5 has rigidity such as flexible steel wire, piano wire, etc. In this case, when the repair material body 5 is passed through the branch pipe 9 by utilizing its rigidity, the repair material body 5 is pushed more easily by the lifting member 12 so that the repair material body 5 can be made more easily. Can pass through.

前記枝管９に挿入した補修材本体５の封止されている先端が本管７内に突出し、アウター層２と硬化層４に設けた切断部１３が枝管９の下端開口部に達したことを本管７内に配置したテレビカメラ１０で確認したら、該補修材本体５を膨らませて前記枝管９の内周に密着させ、この状態で前記補修材本体５の前記硬化層４を硬化させる。前記補修材本体５を膨らませる手段及び前記補修材本体５の前記硬化層４を硬化させる手段にあっては、第１例と同様に行われる。補修材本体５を膨らませる手段及び前記補修材本体５の前記硬化層４を硬化させる手段が、補修材本体５内に蒸気や高温空気を送り込んで膨らませると同時に、蒸気や高温空気の熱により硬化層４の熱硬化性樹脂を硬化させるものである場合、前記引き上げ部材１２としてフレキシブルパイプ等の管状の部材を用い、管状部材の先端側に噴出口を設け、管状部材から前記蒸気や高温空気を補修材本体５内に送り込むようにすると便利である。 The sealed tip of the repair material body 5 inserted into the branch pipe 9 protrudes into the main pipe 7, and the cut portion 13 provided in the outer layer 2 and the hardened layer 4 reaches the lower end opening of the branch pipe 9. When this is confirmed by the TV camera 10 disposed in the main pipe 7, the repair material body 5 is inflated and brought into close contact with the inner periphery of the branch pipe 9, and the hardened layer 4 of the repair material body 5 is cured in this state. Let The means for inflating the repair material body 5 and the means for hardening the hardened layer 4 of the repair material body 5 are performed in the same manner as in the first example. The means for inflating the repair material body 5 and the means for curing the cured layer 4 of the repair material body 5 inflate and inflate steam or hot air into the repair material body 5, and at the same time, with the heat of the steam or hot air When the thermosetting resin of the hardened layer 4 is to be cured, a tubular member such as a flexible pipe is used as the pulling member 12, and a jet outlet is provided on the distal end side of the tubular member. It is convenient to feed the inside of the repair material body 5.

このようにして枝管９に挿入した補修材本体５が本管７の内周に密着した状態で硬化層４が硬化したら、引き上げ部材１２により封止部６を引き上げる。この引き上げ部材１２による封止部６の引き上げにより、アウター層２と硬化層４を残してインナー層３が硬化層４から剥離して補修材本体５外に回収され、アウター層２と硬化層４が残る（図４）。 When the cured layer 4 is cured in such a state that the repair material body 5 inserted into the branch pipe 9 is in close contact with the inner periphery of the main pipe 7, the sealing portion 6 is pulled up by the lifting member 12. By pulling up the sealing portion 6 by the pulling member 12, the inner layer 3 is separated from the hardened layer 4, leaving the outer layer 2 and the hardened layer 4, and collected outside the repair material body 5. Remains (FIG. 4).

そして、前記本管７内に突出しているアウター層２と硬化層４に設けられた前記切断部１３は、枝管８の下端開口部と一致する位置にあり、従って、前記インナー層３の先端の封止部６の引き上げにより、前記本管７内に突出している補修材本体５の先端は切断部１３から分離して本管７内に落下し、前記補修材本体５の先端が開口し、或いは、本管７内に突出している補修材本体５の先端が分離しない場合は、該先端に軽い衝撃を加えることにより分離させ、補修材本体５の先端を開口させる。これにより、本例の枝管用補修材１により枝管８の補修が終了する。なお、この補修材本体５の封止されている先端の切断に先立ち、補修材本体５内に水が入っている場合は、適宜の手段により前記水を回収し、或いは本管７内に排水する。 The outer layer 2 projecting into the main pipe 7 and the cut portion 13 provided in the hardened layer 4 are in a position that coincides with the lower end opening of the branch pipe 8. By pulling up the sealing part 6, the tip of the repair material body 5 protruding into the main pipe 7 is separated from the cutting part 13 and falls into the main pipe 7, and the tip of the repair material body 5 opens. Or when the front-end | tip of the repair material main body 5 which protrudes in the main pipe 7 is not isolate | separated, it is made to separate by applying a light impact to this front-end | tip, and the front-end | tip of the repair material main body 5 is opened. Thereby, the repair of the branch pipe 8 is completed by the branch pipe repair material 1 of this example. Prior to cutting the sealed tip of the repair material body 5, when water is contained in the repair material body 5, the water is collected by appropriate means or drained into the main pipe 7. To do.

図５乃至図８は本発明に係る枝管用補修材を実施するための最良の形態の一例を示すもので、図５は本例の枝管用補修材を枝管に挿入して通す過程を示す縦断面図、図６は本例の枝管用補修材の先端で用いている栓体の縦断面図、図７は本例の枝管用補修材を枝管に挿入して通し、その先端が本管に到達した状態を示す縦断面図、図８は本例の枝管用補修材の先端が本管に到達した後、膨出させ硬化させた硬化層からインナー層を剥離して補修材本体外に回収する状態を示す縦断面図である。 FIGS. 5 to 8 show an example of the best mode for carrying out the branch pipe repair material according to the present invention. FIG. 5 shows the process of inserting the branch pipe repair material of this example through the branch pipe and passing it through. FIG. 6 is a longitudinal sectional view of a plug used at the distal end of the branch pipe repair material of this example, and FIG. 7 is a plan view showing the branch pipe repair material inserted through the branch pipe. FIG. 8 is a longitudinal sectional view showing a state of reaching the main pipe. FIG. 8 shows the main body of the repair material by peeling the inner layer from the hardened layer which has been bulged and hardened after the tip of the repair material for the branch pipe of this example reaches the main pipe. It is a longitudinal cross-sectional view which shows the state collect | recovered outside.

本例で用いる枝管用補修材１は、前記第２参考例の補修材本体５の先端に、栓体１４がインナー層３に固定された状態で取り付けられて、該栓体１４で前記補修材本体５の先端が封止されている。そして、該栓体１４に前記第２例と同様の引き上げ部材１２の先端が接続されている。本例では、前記栓体１４は、弁孔１５が前後に貫通して設けられた栓体本体１６と、前進して弁孔１５を塞ぎ後退して開く弁体１７とから構成されており、前記弁体１７に前記引き上げ部材１２が接続され、引き上げ部材１２の引き出しにより前記弁体１７が後退し弁孔１５が開かれ且つ弁体１７を介して栓体本体１６が引き上げられるようになっている。 The branch pipe repair material 1 used in this example is attached to the tip of the repair material body 5 of the second reference example in a state in which the plug body 14 is fixed to the inner layer 3. The tip of the main body 5 is sealed. And the tip of the raising member 12 similar to the second example is connected to the plug body 14. In this example, the plug body 14 is composed of a plug body 16 provided with a valve hole 15 penetrating forward and backward, and a valve body 17 that moves forward to close the valve hole 15 and opens backward. The lifting member 12 is connected to the valve body 17, the valve body 17 is retracted by pulling the lifting member 12, the valve hole 15 is opened, and the plug body 16 is pulled up through the valve body 17. Yes.

また、前記補修材本体５は、前記栓体１４の後端側近傍に、前記アウター層２と前記硬化層４とを周方向に切断する切断部１３が設けられている。 Further, the repair material body 5 is provided with a cutting portion 13 that cuts the outer layer 2 and the hardened layer 4 in the circumferential direction in the vicinity of the rear end side of the plug body 14.

先ず、第１参考例、第２参考例と同様に、枝管用補修材１である補修材本体５を膨らませていない状態で栓体１４で封止した先端を桝８側から枝管９内に挿入して通す。このとき、補修材本体５は膨ませていないので、補修材本体５と枝管９の内周面との間に十分な隙間があり、前記補修材本体５は下方にある本管７に向かう枝管９に沿って、自重により軽く押すだけで枝管９内を通る。このとき、補修材本体５の外周面に滑剤を塗布しておくと、より容易に枝管９内を通すことができる（図５）。このとき、前記補修材本体５内に通され、その先端が補修材本体５の先端の栓体１４に接続されている引き上げ部材１２が、例えばフレキシブル鋼線、ピアノ線等といった剛性を有するものである場合は、その剛性を利用して補修材本体５を枝管９内に通す際に、前記引き上げ部材１２により補修材本体５を押すことにより、補修材本体５を一層容易に枝管９内を通すことができる。 First, similarly to the first reference example and the second reference example, the tip sealed with the plug 14 in a state where the repair material main body 5 which is the repair material 1 for the branch pipe is not inflated is inserted into the branch pipe 9 from the side of the flange 8. Insert and pass. At this time, since the repair material main body 5 is not inflated, there is a sufficient gap between the repair material main body 5 and the inner peripheral surface of the branch pipe 9, and the repair material main body 5 is directed to the main pipe 7 below. Along the branch pipe 9, it passes through the branch pipe 9 simply by pushing lightly by its own weight. At this time, if a lubricant is applied to the outer peripheral surface of the repair material body 5, it can pass through the branch pipe 9 more easily (FIG. 5). At this time, the lifting member 12 that is passed through the repair material main body 5 and whose tip is connected to the plug 14 at the tip of the repair material main body 5 has rigidity such as flexible steel wire, piano wire, and the like. In some cases, when the repair material body 5 is passed through the branch pipe 9 using its rigidity, the repair material body 5 is pushed into the branch pipe 9 more easily by pushing the repair material body 5 with the lifting member 12. Can pass through.

前記枝管９に挿入した補修材本体５の栓体１４で封止されている先端を本管７内に挿入し、アウター層２と硬化層４に設けた切断部１３が枝管９の下端開口部に達したことを本管７内に配置したテレビカメラ１０で確認したら（図７）、該補修材本体５を膨らませて前記枝管９の内周に密着させ、この状態で前記補修材本体５の前記硬化層４を硬化させる。前記補修材本体５を膨らませる手段及び前記補修材本体５の前記硬化層４を硬化させる手段にあっては、第１参考例と同様に行われる。補修材本体５を膨らませる手段及び前記補修材本体５の前記硬化層４を硬化させる手段が、補修材本体５内に蒸気や高温空気を送り込んで膨らませると同時に、蒸気や高温空気の熱により硬化層４の熱硬化性樹脂を硬化させるものである場合、第２参考例と同様に前記引き上げ部材１２としてフレキシブルパイプ等の管状の部材を用い、管状部材の先端側に噴出口を設け、管状部材から前記蒸気や高温空気を補修材本体５内に送り込むようにすると便利である。 The distal end of the repair material main body 5 inserted into the branch pipe 9 is sealed with the plug 14 and inserted into the main pipe 7, and the cut portion 13 provided in the outer layer 2 and the hardened layer 4 is the lower end of the branch pipe 9. When it is confirmed by the television camera 10 arranged in the main pipe 7 that the opening has been reached (FIG. 7), the repair material main body 5 is inflated and brought into close contact with the inner periphery of the branch pipe 9, and in this state the repair material The cured layer 4 of the main body 5 is cured. The means for expanding the repair material body 5 and the means for curing the hardened layer 4 of the repair material body 5 are performed in the same manner as in the first reference example. The means for inflating the repair material body 5 and the means for curing the cured layer 4 of the repair material body 5 inflate and inflate steam or hot air into the repair material body 5, and at the same time, with the heat of the steam or hot air When the thermosetting resin of the hardened layer 4 is to be cured, a tubular member such as a flexible pipe is used as the pulling member 12 as in the second reference example, and an outlet is provided on the distal end side of the tubular member. It is convenient to send the steam or high-temperature air from the member into the repair material body 5.

このようにして枝管９に挿入した補修材本体５が本管７の内周に密着した状態で硬化層４が硬化したら、引き上げ部材１２により栓体１４を引き上げる。このように引き上げ部材１２で栓体１４を引き上げると、前記栓体１４が、弁孔１５が前後に貫通して設けられた栓体本体１６と、前進して弁孔１５を塞ぎ後退して開く弁体１７とからなり、該弁体１７に前記引き上げ部材１２が接続され、引き上げ部材１２の引き出しにより前記弁体１７が後退し弁孔１５が開かれ且つ弁体１７を介して栓体本体１６が引き上げられるようになっているので、アウター層２と硬化層４を残してインナー層３が硬化層４から剥離して補修材本体５外に回収され、アウター層２と硬化層４が残る（図８）。このとき、前記のように弁体１７の後退により弁孔１５が開くので、例えば、補修材本体に水が入っているような場合、この水は前記弁孔から自然流下により本管内に排出される。 When the cured layer 4 is cured in such a state that the repair material body 5 inserted into the branch pipe 9 is in close contact with the inner periphery of the main pipe 7, the plug 14 is pulled up by the lifting member 12. When the plug 14 is lifted by the lifting member 12 in this way, the plug 14 moves forward with the plug body 16 provided with the valve hole 15 penetrating in the front-rear direction, closes the valve hole 15 and opens backward. The valve member 17 is connected to the lifting member 12, the valve member 17 is retracted by pulling the lifting member 12, the valve hole 15 is opened, and the plug body 16 through the valve member 17. Since the outer layer 2 and the hardened layer 4 are left, the inner layer 3 is peeled off from the hardened layer 4 and collected outside the repair material main body 5, and the outer layer 2 and the hardened layer 4 remain ( FIG. 8). At this time, since the valve hole 15 is opened by the retraction of the valve body 17 as described above, for example, when water is contained in the repair material body, this water is discharged into the main pipe from the valve hole by natural flow. The

そして、前記インナー層３が回収された後の本管７内に突出しているアウター層２と硬化層４に設けられた前記切断部１３は、枝管８の下端開口部と一致する位置にあり、従って、前記インナー層３の先端の栓体１４の引き上げにより、前記本管７内に突出している補修材本体５の先端は切断部１３から分離して本管７内に落下し、前記補修材本体５の先端が開口し、或いは、本管７内に突出している補修材本体５の先端が分離しない場合は、該先端に軽い衝撃を加えることにより分離させ、補修材本体５の先端を開口させる。これにより、本例の枝管用補修材１により枝管８の補修が終了する。 The outer layer 2 protruding into the main pipe 7 after the inner layer 3 has been recovered and the cut portion 13 provided in the hardened layer 4 are in a position that coincides with the lower end opening of the branch pipe 8. Therefore, by pulling up the plug 14 at the tip of the inner layer 3, the tip of the repair material body 5 protruding into the main pipe 7 is separated from the cutting portion 13 and falls into the main pipe 7, and the repair is performed. When the tip of the material body 5 is open or the tip of the repair material body 5 protruding into the main pipe 7 is not separated, the tip of the repair material body 5 is separated by applying a light impact to the tip. Open. Thereby, the repair of the branch pipe 8 is completed by the branch pipe repair material 1 of this example.

本発明に係る枝管用補修材の第１参考例を示すもので、第１参考例の枝管用補修材を枝管に挿入して通す過程を示す縦断面図である。 The 1st reference example of the repair material for branch pipes which concerns on this invention is shown, and it is a longitudinal cross-sectional view which shows the process in which the repair material for branch pipes of a 1st reference example is inserted and passed through a branch pipe. 第１参考例の枝管用補修材の先端が本管に到達した後、膨出させ硬化させた枝管用補修材の先端を切断する状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the state which cut | disconnects the front-end | tip of the repair material for branch pipes which expanded and hardened after the front-end | tip of the repair material for branch pipes of a 1st reference example reached | attained a main pipe. 本発明に係る枝管用補修材の第２参考例を示すもので、本例の枝管用補修材を枝管に挿入して通し、その先端が本管に到達した状態を示す縦断面図である。The 2nd reference example of the repair material for branch pipes concerning the present invention is shown, and it is a longitudinal section showing the state where the branch pipe repair material of this example was inserted in the branch pipe and the tip reached the main pipe. . 第２参考例の枝管用補修材の先端が本管に到達した後、膨出させ硬化させた硬化層からインナー層を剥離して補修材本体外に回収する状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the state which peels an inner layer from the hardened layer bulged and hardened after the front-end | tip of the repair material for branch pipes of a 2nd reference example reaches | attains a main pipe, and collect | recovers outside a repair material main body. 本発明に係る枝管用補修材を実施するための最良の形態の一例を示すもので、本例の枝管用補修材を枝管に挿入して通す過程を示す縦断面図である。 An example of the best form for implementing the repair material for branch pipes which concerns on this invention is shown, and it is a longitudinal cross-sectional view which shows the process in which the repair material for branch pipes of this example is inserted and passed through a branch pipe. 本例の枝管用補修材の先端で用いている栓体の縦断面図である。It is a longitudinal cross-sectional view of the stopper used at the front-end | tip of the repair material for branch pipes of this example. 本例の枝管用補修材を枝管に挿入して通し、その先端が本管に到達した状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the state which inserted the repair material for branch pipes of this example through the branch pipe, and the front-end | tip reached the main pipe. 本例の枝管用補修材の先端が本管に到達した後、膨出させ硬化させた硬化層からインナー層を剥離して補修材本体外に回収する状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the state which peels the inner layer from the hardened layer which expanded and hardened after the front-end | tip of the repair material for branch pipes of this example arrived at the main pipe, and collect | recovers out of a repair material main body.

Explanation of symbols

１枝管用補修材
２アウター層
３インナー層
４硬化層
５補修材本体
６封止部
７本管
８桝
９枝管
１０テレビカメラ
１１カッター
１２引き上げ部材
１３切断部
１４栓体
１５弁孔
１６栓体本体
１７弁体 DESCRIPTION OF SYMBOLS 1 Repair material for branch pipes 2 Outer layer 3 Inner layer 4 Hardened layer 5 Repair material main body 6 Sealing part 7 Main pipe 8 桝 9 Branch pipe 10 TV camera 11 Cutter 12 Lifting member 13 Cutting part 14 Plug 15 Valve hole 16 Plug Body 17 Disc

Claims

A flexible cylindrical shape including an outer layer disposed on the outer peripheral surface, an inner layer disposed on the inner peripheral surface, and a cured layer impregnated with a curable resin disposed between the two layers. A repair material for the branch pipe in which at least the tip of the inner layer of the repair material body is sealed, and the repair material body has a laminated structure in which the inner layer and the hardened layer are peeled off. A lifting member that pushes the repair material body in the distal direction and pulls up a sealing portion that seals the tip of the inner layer of the repair material body is passed through the repair material body. The sealing portion at the tip of the inner layer is composed of a plug attached in a state fixed to the tip of the inner layer, and the tip of the lifting member is connected to the plug The plug body has a valve hole in the front and rear A plug body provided through the valve body, and a valve body that moves forward to close the valve hole and retreats to open. The valve member is connected to the valve body, and the valve body is moved backward by the withdrawal of the lift member. A repair material for a branch pipe, wherein a hole is opened and the plug body is pulled up through the valve body .

The cutting part which cut | disconnects an outer layer and a hardened layer is provided in the circumferential direction at least at the sealing position vicinity of the front- end | tip of an inner layer in the front- end | tip of the said repair material main body . Branch pipe repair material.