JP2007169987A - Underground buried pipe repairing method - Google Patents

Underground buried pipe repairing method Download PDF

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JP2007169987A
JP2007169987A JP2005367472A JP2005367472A JP2007169987A JP 2007169987 A JP2007169987 A JP 2007169987A JP 2005367472 A JP2005367472 A JP 2005367472A JP 2005367472 A JP2005367472 A JP 2005367472A JP 2007169987 A JP2007169987 A JP 2007169987A
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repair
tubular
underground
elastic base
tubular repair
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JP4573246B2 (en
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Shigeru Yamaguchi
茂 山口
Kenji Okumura
賢志 奥村
Yuji Imazaki
雄司 今▲崎▼
Takayuki Nagaoka
孝幸 長岡
Akira Hosaka
陽 保坂
Hisao Mitani
久夫 三谷
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Nippon Telegr & Teleph Corp <Ntt>
日本電信電話株式会社
Meeshikku:Kk
株式会社メーシック
Airec Engineering Corp
アイレック技建株式会社
Asahi Tec Corp
旭テック株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an underground buried pipe repairing method for easily repairing an underground buried pipe with simple work. <P>SOLUTION: The ends 3, 4 in the curved direction of an elastic base material 2 are connected to each other from the tip side by a connecting means to sequentially form a tubular repairing material 1. After inserting the tip side of the tubular repairing material 1 into the underground buried pipe 16 from one opening, while forming the tubular repairing material 1 sequentially toward the rear end side, the tubular repairing material 1 is moved to the other opening side of the underground buried pipe 16. The tubular repairing material is thus arranged from one opening to the other opening of the underground buried pipe 16. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、下水管や内部にケーブルが布設されている保護管等の地中埋設管を補修する地中埋設管補修方法に関する。   The present invention relates to a buried underground pipe repair method for repairing underground buried pipes such as a sewer pipe and a protective pipe in which a cable is laid.
地中に埋設されている管(地中埋設管)の補修方法として、地中埋設管の内面に筒状ライニング材を固定して補修する方法が知られている。この方法は、熱可塑性樹脂、光硬化性樹脂或いは常温硬化性樹脂を含浸または塗布した可撓性のある材料で形成された筒状ライニング材を管路の内部に配置し、この筒状ライニング材を水圧或いは空気圧等で膨らませて管路の内面に押し付け、この筒状ライニング材内に、高温の温水、蒸気を通し、或いは紫外線を照射することにより、硬化性樹脂を硬化させてライニングするものである(例えば、特許文献1参照)。
特公平7−4853号公報
As a method of repairing a pipe buried in the ground (underground pipe), a method of repairing by fixing a cylindrical lining material on the inner surface of the underground pipe is known. In this method, a cylindrical lining material formed of a flexible material impregnated or coated with a thermoplastic resin, a photocurable resin, or a room temperature curable resin is disposed inside a pipe, and this cylindrical lining material is used. Inflated with water pressure or air pressure and pressed against the inner surface of the pipe line, and the lining resin is cured and cured by passing hot water, steam, or irradiating ultraviolet rays into the cylindrical lining material. Yes (see, for example, Patent Document 1).
Japanese Patent Publication No. 7-4853
しかし、前記筒状ライニング材を用いた地中埋設管補修方法は、付帯装置が大掛かりとなり、また作業工程も多く面倒な作業となっている。また、前記地中埋設管の内部に遮るものが無ければ適用できるが、たとえば電力線や電話線等のケーブルが、前記地中埋設管の内部に布設されている場合、ケーブルが邪魔になって適用することができず、適用しようとすれば、前記地中埋設管からケーブルを取り除かなければならず、非常に面倒な作業を強いられる。   However, the underground pipe repairing method using the tubular lining material requires a large amount of ancillary devices and has many troublesome work steps. In addition, it can be applied if there is no obstruction inside the underground pipe. For example, when a cable such as a power line or a telephone line is laid inside the underground pipe, the cable is obstructed. If this is not possible, the cable must be removed from the underground pipe if it is to be applied, which is very laborious.
本発明の目的は、地中埋設管を簡単な作業で容易に補修することができる地中埋設管補修方法を提供することにある。   An object of the present invention is to provide an underground pipe repairing method capable of easily repairing underground pipes by a simple operation.
本発明の他の目的は、地中埋設管を簡単な作業で容易に補修することができるとともに地中埋設管の内部にケーブルが布設されている場合であっても、ケーブルが布設されたままの状態で補修することができる地中埋設管補修方法を提供することにある。   Another object of the present invention is that the underground pipe can be easily repaired by a simple operation, and the cable remains laid even when the cable is laid inside the underground pipe. An object of the present invention is to provide a method for repairing underground pipes that can be repaired in the state described above.
前記目的を解決するためになされた請求項1に記載の発明は、管状補修材を用いて地中埋設管を補修する地中埋設管補修方法であって、前記管状補修材は、円周方向に湾曲した長尺の弾性基材で構成され、この弾性基材は、湾曲方向の端部同士を結合して管状補修材を形成する結合手段を備えた構造になっており、前記弾性基材の湾曲方向の端部同士を、先端側から前記結合手段によって結合して管状補修材を順次形成し、この管状補修材の先端側を、前記地中埋設管内へ一方の開口部から挿入した後、後端側へ向かって前記管状補修材を順次形成しながら、この管状補修材を前記地中埋設管の他方の開口部側へ移動させ、前記管状補修材を前記地中埋設管の一方の開口部から他方の開口部に亘って配置することを特徴とする。   In order to solve the above-mentioned object, the invention according to claim 1 is an underground pipe repairing method for repairing an underground pipe using a tubular repair material, wherein the tubular repair material has a circumferential direction. The elastic base material has a structure including a joining means for joining the end portions in the curving direction to form a tubular repair material, and the elastic base material. After the end portions in the bending direction are joined together from the distal end side by the coupling means to form a tubular repair material, and the distal end side of the tubular repair material is inserted into the underground pipe from one opening Then, while sequentially forming the tubular repair material toward the rear end side, the tubular repair material is moved to the other opening side of the underground pipe, and the tubular repair material is moved to one of the underground pipes. It arrange | positions ranging from an opening part to the other opening part, It is characterized by the above-mentioned.
請求項2に記載の発明は、管状補修材を用いて内部にケーブルが布設されている地中埋設管を補修する地中埋設管補修方法であって、前記管状補修材は、円周方向に湾曲した長尺の弾性基材で構成され、この弾性基材は、湾曲方向の端部同士を結合して管状補修材を形成する結合手段を備えた構造になっており、前記弾性基材の湾曲方向の両端部間から前記弾性基材の湾曲内部へ前記ケーブルを入れた後、前記弾性基材の湾曲方向の端部同士を、先端側から前記結合手段によって結合して管状補修材を順次形成し、この管状補修材の先端側を、前記地中埋設管内へ一方の開口部から挿入した後、後端側へ向かって内部にケーブルを通した状態の前記管状補修材を順次形成しながら、この管状補修材を前記地中埋設管の他方の開口部側へ移動させ、内部にケーブルを通した状態で前記管状補修材を前記地中埋設管の一方の開口部から他方の開口部に亘って配置することを特徴とする。   The invention according to claim 2 is an underground buried pipe repairing method for repairing an underground pipe in which a cable is laid inside using a tubular repair material, and the tubular repair material is arranged in a circumferential direction. The elastic base material is composed of a curved long elastic base material, and the elastic base material has a structure including a connecting means for connecting the end portions in the bending direction to form a tubular repair material. After inserting the cable from between both ends in the bending direction into the inside of the elastic base material, the ends of the elastic base material in the bending direction are connected to each other by the connecting means from the front end side to sequentially repair the tubular repair material. While forming the tubular repair material in the state where the cable is passed through the inside toward the rear end side after inserting the distal end side of this tubular repair material into the underground buried pipe from one opening portion The tubular repair material is moved to the other opening side of the underground pipe. , Characterized in that arranged over the tubular repair material while through the cable inside from one of the openings of the underground pipe to the other opening.
請求項3に記載の発明は、管状補修材を用いて地中埋設管を補修する地中埋設管補修方法であって、帯状の弾性基材を幅方向に湾曲した後、この弾性基材の湾曲方向の端部同士を先端側から結合手段によって結合して管状補修材を順次形成し、この管状補修材の先端側を、前記地中埋設管内へ一方の開口部から挿入した後、後端側へ向かって前記管状補修材を順次形成しながら、この管状補修材を前記地中埋設管の他方の開口部側へ移動させ、前記管状補修材を前記地中埋設管の一方の開口部から他方の開口部に亘って配置することを特徴とする。   The invention according to claim 3 is an underground buried pipe repairing method for repairing an underground buried pipe using a tubular repair material, and after bending a belt-like elastic base material in the width direction, End portions in the bending direction are joined together from the front end side by a coupling means to form a tubular repair material in sequence, and after inserting the front end side of this tubular repair material into the underground pipe from one opening, the rear end While sequentially forming the tubular repair material toward the side, the tubular repair material is moved to the other opening side of the underground pipe, and the tubular repair material is moved from one opening of the underground pipe. It arrange | positions over the other opening part, It is characterized by the above-mentioned.
請求項4に記載の発明は、管状補修材を用いて内部にケーブルが布設されている地中埋設管を補修する地中埋設管補修方法であって、帯状の弾性基材を幅方向に湾曲した後、この弾性基材の湾曲方向の両端部間から前記弾性基材の湾曲内部へ前記ケーブルを入れた後、前記弾性基材の湾曲方向の端部同士を、先端側から前記結合手段によって結合して管状補修材を順次形成し、この管状補修材の先端側を、前記地中埋設管内へ一方の開口部から挿入した後、後端側へ向かって内部にケーブルを通した状態の前記管状補修材を順次形成しながら、この管状補修材を前記地中埋設管の他方の開口部側へ移動させ、内部にケーブルを通した状態で前記管状補修材を前記地中埋設管の一方の開口部から他方の開口部に亘って配置することを特徴とする。   The invention according to claim 4 is an underground buried pipe repairing method for repairing an underground buried pipe in which a cable is laid inside by using a tubular repair material, wherein the belt-like elastic base material is curved in the width direction. After the cable is inserted into the inside of the elastic base material from between both ends of the elastic base material in the bending direction, the ends of the elastic base material in the bending direction are connected to each other by the coupling means from the front end side. The tubular repair material is sequentially formed by coupling, and the distal end side of the tubular repair material is inserted into the underground pipe from one opening, and then the cable is passed through the interior toward the rear end side. While sequentially forming the tubular repair material, the tubular repair material is moved to the other opening side of the underground pipe, and the tubular repair material is moved to one of the underground pipes while the cable is passed through the inside. Arranged from the opening to the other opening
請求項5に記載の発明は、請求項1,2,3または4に記載の前記管状補修材を構成する弾性基材の表面には、多数の突起が形成されていることを特徴とする。   The invention described in claim 5 is characterized in that a large number of protrusions are formed on the surface of the elastic base material constituting the tubular repair material according to claim 1, 2, 3 or 4.
請求項6に記載の発明は、請求項5に記載の前記管状補修材を構成する弾性基材の表面に形成された突起は、前記管状補修材の周方向および/または軸方向に形成されたリブであることを特徴とする。   According to a sixth aspect of the present invention, the protrusion formed on the surface of the elastic base material constituting the tubular repair material according to the fifth aspect is formed in a circumferential direction and / or an axial direction of the tubular repair material. It is a rib.
請求項7に記載の発明は、請求項1,2,3,4,5または6に記載の前記管状補修材を構成する弾性基材の湾曲方向の端部同士を前記結合手段によって結合する際に、前記結合する弾性基材の湾曲方向の端部にシーリング剤を塗布することを特徴とする。   According to a seventh aspect of the present invention, when the ends of the elastic base material constituting the tubular repair material according to the first, second, third, fourth, fifth or sixth aspect are coupled together by the coupling means. In addition, a sealing agent is applied to an end portion in a bending direction of the elastic base material to be bonded.
請求項1に記載の地中埋設管補修方法によれば、前記円周方向に湾曲した長尺の弾性基材の湾曲方向の端部同士を、前記結合手段によって結合して形成される管状補修材が用いられ、前記弾性基材の湾曲方向の端部同士を、先端側から前記結合手段によって結合して管状補修材を順次形成し、この管状補修材の先端側を、前記地中埋設管内へ一方の開口部から挿入した後、後端側へ向かって前記管状補修材を順次形成しながら、この管状補修材を前記地中埋設管の他方の開口部側へ移動させ、前記管状補修材を前記地中埋設管の一方の開口部から他方の開口部に亘って配置する方法をとるので、大掛かりな付帯装置が必要とならず、また従来よりも作業工程が少なくなり、前記地中埋設管の補修を簡単な作業で容易に行うことができる。   According to the underground buried pipe repairing method according to claim 1, the tubular repair formed by joining ends in the curved direction of the long elastic base material curved in the circumferential direction by the coupling means. Materials are used, and the ends of the elastic base material in the bending direction are joined together from the tip side by the coupling means to form a tubular repair material, and the tip side of the tubular repair material is placed in the underground pipe The tubular repair material is moved to the other opening side of the underground pipe while the tubular repair material is sequentially formed toward the rear end side after being inserted from the one opening portion. Is disposed from one opening to the other opening of the underground pipe, so that a large-scale auxiliary device is not required, and the work process is reduced as compared with the prior art. The pipe can be easily repaired with simple operations.
請求項2に記載の地中埋設管補修方法によれば、前記円周方向に湾曲した長尺の弾性基材の湾曲方向の端部同士を、前記結合手段によって結合して形成される管状補修材が用いられ、前記弾性基材の湾曲方向の両端部間から前記弾性基材の湾曲内部へ前記ケーブルを入れた後、前記弾性基材の湾曲方向の端部同士を、先端側から前記結合手段によって結合して管状補修材を順次形成し、この管状補修材の先端側を、前記地中埋設管内へ一方の開口部から挿入した後、後端側へ向かって内部にケーブルを通した状態の前記管状補修材を順次形成しながら、この管状補修材を前記地中埋設管の他方の開口部側へ移動させ、内部にケーブルを通した状態で前記管状補修材を前記地中埋設管の一方の開口部から他方の開口部に亘って配置する方法をとるので、大掛かりな装置が必要とならず、また従来よりも作業工程が少なくなり、前記地中埋設管の補修を簡単な作業で容易に行うことができるとともに、前記地中埋設管の内部にケーブルが布設されていてもケーブルに邪魔されることなく、前記地中埋設管の補修を行うことができる。   According to the underground pipe repairing method according to claim 2, the tubular repair formed by joining the ends in the curving direction of the long elastic base material curved in the circumferential direction by the coupling means. After the material is used and the cable is inserted from between both ends of the elastic base material in the bending direction into the inside of the elastic base material, the ends of the elastic base material in the bending direction are connected to each other from the tip side. A tubular repair material is sequentially formed by joining by means, and after inserting the distal end side of this tubular repair material into the underground buried pipe from one opening, and then passing the cable inside toward the rear end side While sequentially forming the tubular repair material, the tubular repair material is moved to the other opening side of the underground pipe, and the tubular repair material is moved to the inside of the underground pipe in a state where a cable is passed through the inside. A method of arranging from one opening to the other opening Therefore, a large-scale device is not required, and the work process is reduced as compared with the conventional one. The underground pipe can be easily repaired by a simple operation, and a cable is provided inside the underground pipe. Even if the cable is installed, the underground pipe can be repaired without being disturbed by the cable.
請求項3に記載の地中埋設管補修方法によれば、帯状の弾性基材を幅方向に湾曲した後、この弾性基材の湾曲方向の端部同士を先端側から結合手段によって結合して管状補修材を順次形成し、この管状補修材の先端側を、前記地中埋設管内へ一方の開口部から挿入した後、後端側へ向かって前記管状補修材を順次形成しながら、この管状補修材を前記地中埋設管の他方の開口部側へ移動させ、前記管状補修材を前記地中埋設管の一方の開口部から他方の開口部に亘って配置する方法をとるので、大掛かりな付帯装置が必要とならず、また従来よりも作業工程が少なくなり、前記地中埋設管の補修を簡単な作業で容易に行うことができる。   According to the underground pipe repairing method according to claim 3, after bending the belt-shaped elastic base material in the width direction, the ends of the elastic base material in the bending direction are joined from the tip side by the coupling means. The tubular repair material is sequentially formed, and the distal end side of the tubular repair material is inserted into the underground buried pipe from one opening, and then the tubular repair material is sequentially formed toward the rear end side. Since the repair material is moved to the other opening side of the underground pipe and the tubular repair material is arranged from one opening portion to the other opening portion of the underground pipe, a large scale is required. There is no need for an accessory device, and the number of work steps is less than in the prior art, so that the underground pipe can be easily repaired with simple work.
請求項4に記載の地中埋設管補修方法によれば、帯状の弾性基材を幅方向に湾曲した後、この弾性基材の湾曲方向の両端部間から前記弾性基材の湾曲内部へ前記ケーブルを入れた後、前記弾性基材の湾曲方向の端部同士を、先端側から前記結合手段によって結合して管状補修材を順次形成し、この管状補修材の先端側を、前記地中埋設管内へ一方の開口部から挿入した後、後端側へ向かって内部にケーブルを通した状態の前記管状補修材を順次形成しながら、この管状補修材を前記地中埋設管の他方の開口部側へ移動させ、内部にケーブルを通した状態で前記管状補修材を前記地中埋設管の一方の開口部から他方の開口部に亘って配置する方法をとるので、大掛かりな装置が必要とならず、また従来よりも作業工程が少なくなり、前記地中埋設管の補修を簡単な作業で容易に行うことができるとともに、前記地中埋設管の内部にケーブルが布設されていてもケーブルに邪魔されることなく、前記地中埋設管の補修を行うことができる。   According to the underground buried pipe repairing method according to claim 4, after bending the belt-shaped elastic base material in the width direction, between both ends in the bending direction of the elastic base material, into the inside of the elastic base material After inserting the cable, the ends of the elastic base material in the bending direction are joined from the tip side by the coupling means to sequentially form a tubular repair material, and the tip side of the tubular repair material is embedded in the ground The tubular repair material is inserted into the pipe from one opening, and then the tubular repair material in a state where the cable is passed through the inside toward the rear end side, and the tubular repair material is formed on the other opening of the underground pipe If a large-scale device is required, the tubular repair material is arranged from one opening to the other opening of the underground pipe with the cable passing through the inside. In addition, there are fewer work processes than before, and the underground The pipe can be easily repaired by a simple operation, and even if a cable is laid inside the underground pipe, the underground pipe can be repaired without being disturbed by the cable. it can.
請求項5に記載の地中埋設管補修方法によれば、請求項1,2,3または4に記載の前記管状補修材を構成する弾性基材の表面には、多数の突起が形成されているので、前記地中埋設管の内周面と、この地中埋設管内へ挿入した前記管状補修材との接触面積が小さくなり、前記管状補修材を前記地中埋設管の他方の開口部側へ移動させたときの摩擦抵抗が小さいので、前記管状補修材を前記地中埋設管内へ挿入しこの地中埋設管の他方の開口部側へ容易に移動させることができる。   According to the underground pipe repairing method according to claim 5, a number of protrusions are formed on the surface of the elastic base material constituting the tubular repair material according to claim 1, 2, 3 or 4. Therefore, the contact area between the inner peripheral surface of the underground pipe and the tubular repair material inserted into the underground pipe is reduced, and the tubular repair material is placed on the other opening side of the underground pipe. Therefore, the tubular repair material can be inserted into the underground pipe and easily moved to the other opening side of the underground pipe.
請求項6に記載の地中埋設管補修方法によれば、請求項5に記載の前記管状補修材を構成する弾性基材の表面に形成された突起は、前記管状補修材の周方向および/または軸方向に形成されたリブであるので、前記地中埋設管の内周面と、この地中埋設管内へ挿入した前記管状補修材との接触面積が小さくなり、前記管状補修材を前記地中埋設管の他方の開口部側へ移動させたときの摩擦抵抗が小さいので、前記管状補修材を前記地中埋設管内へ挿入しこの地中埋設管の他方の開口部側へ容易に移動させることができるとともに、前記弾性基材の表面に形成されたリブが、前記管状補修材の周方向および/または軸方向の強度を向上させることになり、その分前記弾性基材の肉厚を薄くすることができ、前記管状補修材の軽量化と材料費の削減を図ることができる。   According to the underground pipe repairing method according to claim 6, the protrusions formed on the surface of the elastic base material constituting the tubular repair material according to claim 5 are arranged in the circumferential direction of the tubular repair material and / or Alternatively, since the rib is formed in the axial direction, the contact area between the inner peripheral surface of the underground pipe and the tubular repair material inserted into the underground pipe is reduced, and the tubular repair material is attached to the ground. Since the frictional resistance when moved to the other opening side of the underground pipe is small, the tubular repair material is inserted into the underground pipe and easily moved to the other opening side of the underground pipe. In addition, the rib formed on the surface of the elastic base material improves the strength in the circumferential direction and / or the axial direction of the tubular repair material, and accordingly the thickness of the elastic base material is reduced. The tubular repair material can be reduced in weight and material cost. It can be achieved.
請求項7に記載の地中埋設管補修方法によれば、請求項1,2,3,4,5または6に記載の前記管状補修材を構成する弾性基材の湾曲方向の端部同士を前記結合手段によって結合する際に、前記結合する弾性基材の湾曲方向の端部にシーリング剤を塗布するようにしたので、前記管状補修材を構成する弾性基材の結合された端部間からの水漏れを防止することができる。   According to the underground pipe repairing method according to claim 7, the ends of the elastic base material constituting the tubular repair material according to claim 1, 2, 3, 4, 5 or 6 are bent together. Since the sealing agent is applied to the end in the bending direction of the elastic base material to be joined when joining by the joining means, from between the joined ends of the elastic base material constituting the tubular repair material Water leakage can be prevented.
以下、本発明に係る地中埋設管補修方法を実施するための最良の形態の一例について説明する。
図1乃至図3は本発明に係る地中埋設管補修方法で使用する管状補修材の一例を示す図であり、図1は本例の管状補修材の斜視図、図2は図1のA−A線拡大断面図、図3は図1に示す管状補修材を構成する弾性基材の拡大断面図である。
Hereinafter, an example of the best mode for carrying out the underground pipe repair method according to the present invention will be described.
1 to 3 are views showing an example of a tubular repair material used in the underground buried pipe repair method according to the present invention, FIG. 1 is a perspective view of the tubular repair material of this example, and FIG. FIG. 3 is an enlarged sectional view of an elastic base material constituting the tubular repair material shown in FIG.
本例の管状補修材1は、円周方向に湾曲した長尺の弾性基材2で構成されている。この弾性基材2は、湾曲方向の端部3,4同士を結合して前記管状補修材1を形成する結合手段5を備えた構造になっている。   The tubular repair material 1 of this example is composed of a long elastic base material 2 curved in the circumferential direction. This elastic base material 2 has a structure provided with a coupling means 5 for joining the end portions 3 and 4 in the bending direction to form the tubular repair material 1.
前記管状補修材1を形成する弾性基材2は、プラスチック、金属等で形成されている。この弾性基材2にあっては、本例では湾曲方向の前記端部3,4が開いた状態、すなわち断面略C字状に形成されており(図3)、この断面略C字状の弾性基材2aを、径方向の弾発力に抗して縮径させ、前記端部3,4同士を前記結合手段5により結合して前記管状補修材1を形成している。   The elastic base material 2 forming the tubular repair material 1 is made of plastic, metal or the like. In this elastic base material 2, in this example, the end portions 3 and 4 in the bending direction are opened, that is, formed in a substantially C-shaped section (FIG. 3). The elastic base material 2 a is reduced in diameter against the elastic force in the radial direction, and the end portions 3, 4 are coupled by the coupling means 5 to form the tubular repair material 1.
前記弾性基材2aの湾曲方向の端部3,4同士を結合する結合手段5にあっては、本例では、一方の端部3の表面側に軸方向に沿って形成された係止突起6と、他方の端部4の裏面側に軸方向に沿って形成され前記係止突起6に径方向に向かい合って周方向に噛み合うように係止する係止突起7とから構成されている。そして、略C字状に形成された前記弾性基材2aの湾曲方向の端部3,4を径方向の弾発力に抗して縮径させ、前記端部3,4に形成された前記係止突起6と前記係止突起7を径方向に向かい合って周方向に噛み合うように係止させると、縮径させた前記弾性基材2aの拡径方向への復元力により、前記係止突起6と前記係止突起7とがしっかりと噛み合い、前記弾性基材2aの湾曲方向の端部3,4が結合して管状補修材1が形成されるようになっている。   In the coupling means 5 that couples the end portions 3 and 4 in the bending direction of the elastic base material 2a, in this example, a locking protrusion formed along the axial direction on the surface side of one end portion 3 6 and a locking projection 7 that is formed along the axial direction on the back surface side of the other end portion 4 and engages with the locking projection 6 so as to face in the radial direction and engage with each other in the circumferential direction. Then, the end portions 3 and 4 of the elastic base material 2a formed in a substantially C shape are reduced in diameter against the elastic force in the radial direction, and the end portions 3 and 4 are formed. When the locking projection 6 and the locking projection 7 are locked so as to face each other in the radial direction and mesh with each other in the circumferential direction, the locking projection is caused by the restoring force in the diameter-enlarging direction of the elastic base material 2a having a reduced diameter. 6 and the locking projection 7 are firmly meshed with each other, and the end portions 3 and 4 of the elastic base material 2a in the bending direction are coupled to form the tubular repair material 1.
前記弾性基材2aの湾曲方向の端部3,4同士を結合する結合手段5は、前記構成に限定されるものでないことはもちろんである。   Of course, the coupling means 5 for coupling the end portions 3 and 4 of the elastic base material 2a in the bending direction is not limited to the above configuration.
前記管状補修材1を構成する弾性基材2aの表面には、多数の突起8が形成されている。本例では、前記突起8は、前記管状補修材の周方向および軸方向に形成されたリブ9,10となっている。前記周方向のリブ9と前記軸方向のリブ10にあっては、前記周方向のリブ9よりも前記軸方向のリブ10の方が高くなるように形成されている(図2)。本例では、前記突起8は、前記周方向のリブ9と前記軸方向のリブ10となっているが、前記周方向のリブ9と前記軸方向のリブ10の何れか一方であってもよい。   A large number of protrusions 8 are formed on the surface of the elastic base material 2 a constituting the tubular repair material 1. In this example, the protrusions 8 are ribs 9 and 10 formed in the circumferential direction and the axial direction of the tubular repair material. The circumferential rib 9 and the axial rib 10 are formed such that the axial rib 10 is higher than the circumferential rib 9 (FIG. 2). In this example, the protrusion 8 is the circumferential rib 9 and the axial rib 10, but may be either the circumferential rib 9 or the axial rib 10. .
また、前記突起8は、他の構成となっていてもよい。図4は前記弾性基材2の表面に形成される突起8の他例を示す管状補修材1の平面図であり、同図に示すように、前記突起8は、前記弾性基材2aの表面に所定間隔で多数突設された、略半球状の突起11であってもよい。   The protrusion 8 may have another configuration. FIG. 4 is a plan view of the tubular repair material 1 showing another example of the protrusion 8 formed on the surface of the elastic base material 2. As shown in FIG. 4, the protrusion 8 is formed on the surface of the elastic base material 2a. A plurality of substantially hemispherical protrusions 11 may be provided at a predetermined interval.
図5乃至図7は本発明に係る地中埋設管補修方法で使用する管状補修材の他例を示す図であり、図5は本例の管状補修材の斜視図、図6は図5のB−B線拡大断面図、図7は図5に示す管状補修材を構成する弾性基材の拡大断面図である。   5 to 7 are views showing another example of the tubular repair material used in the underground pipe repairing method according to the present invention, FIG. 5 is a perspective view of the tubular repair material of this example, and FIG. FIG. 7 is an enlarged sectional view of an elastic base material constituting the tubular repair material shown in FIG.
本例の管状補修材1も、前記図1乃至図3に示す管状補修材と同様に、円周方向に湾曲した長尺の弾性基材2で構成されている。この弾性基材2は、湾曲方向の端部3,4同士を結合する結合手段5を備えた構造になっている。   Similarly to the tubular repair material shown in FIGS. 1 to 3, the tubular repair material 1 of this example is also composed of a long elastic base material 2 curved in the circumferential direction. The elastic base material 2 has a structure including a coupling means 5 for coupling the end portions 3 and 4 in the bending direction.
前記管状補修材1を構成する弾性基材2は、プラスチック、金属等で形成されている。この弾性基材2にあっては、本例では、前記湾曲方向の端部3,4が閉じて上下、すなわち径方向に重なり合った状態に形成されており(図7)、このように形成された弾性基材2bを、径方向の弾発力に抗して拡径させ、前記湾曲方向の端部3,4同士を前記結合手段5によって結合して前記管状補修材1を形成している。   The elastic base material 2 constituting the tubular repair material 1 is made of plastic, metal or the like. In this elastic base material 2, in this example, the end portions 3 and 4 in the bending direction are closed and overlapped in the vertical direction, that is, in the radial direction (FIG. 7). The tubular base material 2 is formed by expanding the diameter of the elastic base material 2 b against the elastic force in the radial direction and connecting the end portions 3, 4 in the curved direction with the connecting means 5. .
前記弾性基材2bの湾曲方向の端部3,4同士を結合する結合手段5にあっては、本例では、前記一方の端部3の端面に軸方向に沿って形成された係合突条12と、前記他方の端部4の端面に軸方向に沿って形成され前記係合突条12が係合する係合溝13とから構成されている。そして、径方向に重なり合った前記弾性基材2bの湾曲方向の端部3,4を、径方向の弾発力に抗して拡径させ、前記一方の端部3の端面に形成された前記係合突条12を、前記他方の端部4の端面に形成された前記係合溝13に係合させると、拡径させた前記弾性基材の縮径方向への復元力により前記係合突条12が前記係合溝13にしっかりと係合し、前記弾性基材2bの湾曲方向の端部3,4同士が結合して前記管状補修材1が形成されるようになっている。
その他の構成にあっては、前記図1乃至図3に示す管状補修材と同様の構成になっている。
In the coupling means 5 that couples the end portions 3 and 4 in the bending direction of the elastic base material 2b, in this example, the engagement protrusion formed on the end surface of the one end portion 3 along the axial direction. It is comprised from the groove | channel 12 and the engagement groove | channel 13 which is formed in the end surface of the said other edge part 4 along the axial direction, and the said engagement protrusion 12 engages. Then, the end portions 3, 4 in the bending direction of the elastic base material 2b overlapping in the radial direction are expanded against the elastic force in the radial direction, and the end portions of the one end portion 3 are formed. When the engagement protrusion 12 is engaged with the engagement groove 13 formed on the end face of the other end portion 4, the engagement is caused by the restoring force in the diameter reduction direction of the elastic base material having the diameter increased. The ridge 12 is firmly engaged with the engagement groove 13, and the end portions 3 and 4 of the elastic base material 2b in the bending direction are coupled to each other so that the tubular repair material 1 is formed.
Other configurations are the same as the tubular repair material shown in FIGS.
つぎに、前記のように構成された管状補修材1を使用して地中埋設管を補修する地中埋設管補修方法を、本発明に係る地中埋設管補修方法の第一例として図8乃至図11に基づいて説明する。   Next, an underground underground pipe repair method for repairing underground underground pipes using the tubular repair material 1 configured as described above will be described with reference to FIG. 8 as a first example of the underground underground pipe repair method according to the present invention. It demonstrates based on thru | or FIG.
図8は地中埋設管の一方の開口部が開口するマンホール内へ前記管状補修材1を構成する弾性基材2を挿入する工程を示す縦断面図、図9は地中埋設管の一方の開口部が開口するマンホール内へ挿入した前記弾性基材2の湾曲内部へ、前記弾性基材2の湾曲方向の両端部3,4間からケーブルを入れた後、前記弾性基材2の湾曲方向の端部3,4同士を前記結合手段5により結合して管状補修材1を形成する工程を示す説明図、図10は前記地中埋設管16の内部へ一方の開口部から挿入した前記管状補修材1を、前記地中埋設管16の他方の開口部側へ移動させる工程を示す横断面図、図11は前記地中埋設管16の一方の開口部から他方の開口部に亘って配置した前記管状補修材1を固定した状態を示す縦断面図である。   FIG. 8 is a longitudinal sectional view showing a process of inserting the elastic base material 2 constituting the tubular repair material 1 into a manhole in which one opening of the underground pipe is opened, and FIG. 9 is one of the underground pipes. After a cable is inserted from both ends 3 and 4 in the bending direction of the elastic base material 2 into the bending inside of the elastic base material 2 inserted into a manhole having an opening, the bending direction of the elastic base material 2 FIG. 10 is an explanatory view showing a process of forming the tubular repair material 1 by joining the end portions 3 and 4 of the pipes by the joining means 5, and FIG. 10 shows the tubular tube inserted into the underground buried pipe 16 from one opening. FIG. 11 is a cross-sectional view showing the process of moving the repairing material 1 to the other opening side of the underground pipe 16, and FIG. 11 is arranged from one opening to the other opening of the underground pipe 16. It is a longitudinal cross-sectional view which shows the state which fixed the said tubular repair material 1.
本例では、内部にケーブルが布設されている地中埋設管を補修する地中埋設管補修方法について説明する。図に示すように、地面14の地中に、内部にケーブル15が布設されている地中埋設管16が、所定間隔で垂直に立設するマンホール17a,17bで区切られた状態で埋設されている。   In this example, an underground pipe repairing method for repairing underground pipes in which cables are installed will be described. As shown in the figure, an underground pipe 16 having a cable 15 laid therein is buried in the ground 14 in a state of being separated by manholes 17a and 17b that stand vertically at predetermined intervals. Yes.
このような地中埋設管16を補修するにあたり、図8に示すように、まず前記地中埋設管16の一方の開口部が開口するマンホール17a内へ、管状補修材1を構成する長尺の弾性基材2を挿入し、前記マンホール17a内で、図9に示すように、前記弾性基材2の湾曲内部へこの弾性基材2の湾曲方向の両端部3,4間から前記ケーブル15を入れた後、前記弾性基材2の湾曲方向の端部3,4同士を、先端側から前記結合手段5により結合して管状補修材1を順次形成する。   In repairing such underground pipe 16, first, as shown in FIG. 8, first, the elongated repair material 1 is formed into a manhole 17 a in which one opening of the underground pipe 16 is opened. The elastic base material 2 is inserted, and the cable 15 is inserted into the curved portion of the elastic base material 2 from between both ends 3 and 4 in the bending direction of the elastic base material 2 in the manhole 17a as shown in FIG. After putting, the end portions 3 and 4 in the bending direction of the elastic base material 2 are joined together by the joining means 5 from the front end side, and the tubular repair material 1 is sequentially formed.
前記のようにして管状補修材1を形成する際に、結合する前記弾性基材2の湾曲方向の端部3,4にシーリング剤を塗布することが好ましい。前記弾性基材2の端部3,4にシーリング剤を塗布することにより、前記管状補修材1を構成する弾性基材2の湾曲方向の端部3,4の間からの水漏れを防止することができる。   When the tubular repair material 1 is formed as described above, it is preferable to apply a sealing agent to the end portions 3 and 4 in the bending direction of the elastic base material 2 to be bonded. By applying a sealing agent to the end portions 3 and 4 of the elastic base material 2, water leakage from between the end portions 3 and 4 in the bending direction of the elastic base material 2 constituting the tubular repair material 1 is prevented. be able to.
つぎに、前記のようにして形成した前記管状補修材1の先端側を、図10に示すように、前記地中埋設管16内へ一方の開口部から挿入した後、管状補修材1を構成する弾性基材2の湾曲方向の両端部3,4間から前記ケーブル15を入れて、これら端部3,4同士を、前記マンホール17a内で、後端側へ向かって前記結合手段5により順次結合して、内部に前記ケーブル15を通した状態の管状補修材1を形成しながら、前記地中埋設管16内へ一方の開口部から挿入した前記管状補修材1を、他方の開口部側へ移動させ、内部に前記ケーブル15を通した状態で前記管状補修材1を前記地中埋設管16の一方の開口部から他方の開口部に亘って配置する。   Next, as shown in FIG. 10, the distal end side of the tubular repair material 1 formed as described above is inserted into the underground buried pipe 16 from one opening, and then the tubular repair material 1 is configured. The cable 15 is inserted from both ends 3 and 4 of the elastic base material 2 in the bending direction, and the ends 3 and 4 are sequentially connected to the rear end side by the coupling means 5 in the manhole 17a. The tubular repair material 1 inserted into the underground buried pipe 16 from one opening while the tubular repair material 1 in a state where the cable 15 is passed through is joined to the other opening side The tubular repair material 1 is arranged from one opening to the other opening of the underground pipe 16 with the cable 15 being passed through.
前記管状補修材1の移動は、この管状補修材1の先端部に取り付けた牽引用ロープ18を、前記地中埋設管16の他方の開口部側から引っ張ることにより行う。前記牽引用ロープ18で前記管状補修材1を引っ張るときに、前記地中埋設管16内における前記管状補修材1の移動を容易にするため、必要に応じて前記地中埋設管16の内周面に滑剤を塗布してもよい。   The tubular repair material 1 is moved by pulling a pulling rope 18 attached to the tip of the tubular repair material 1 from the other opening side of the underground buried pipe 16. In order to facilitate the movement of the tubular repair material 1 in the underground buried pipe 16 when the tubular repair material 1 is pulled by the pulling rope 18, an inner circumference of the underground buried pipe 16 is used as necessary. A lubricant may be applied to the surface.
また、前記管状補修材1を構成する弾性基材2の表面には、多数の突起8が形成されているとよい。前記管状補修材1を構成する弾性基材2の表面に、多数の突起8が形成されていると、前記地中埋設管16の内周面と、前記地中埋設管16内へ挿入した前記管状補修材1との接触面積が小さくなり、前記管状補修材1を前記地中埋設管16の他方の開口部側へ移動させたときの摩擦抵抗が小さいので、前記管状補修材1を前記地中埋設管16内へ挿入し、この地中埋設管16の他方の開口部側へ容易に移動させることができるものとなる。   A large number of protrusions 8 may be formed on the surface of the elastic base material 2 constituting the tubular repair material 1. When a large number of protrusions 8 are formed on the surface of the elastic base material 2 constituting the tubular repair material 1, the inner peripheral surface of the underground tube 16 and the underground tube 16 are inserted into the underground tube 16. Since the contact area with the tubular repair material 1 becomes small and the frictional resistance when the tubular repair material 1 is moved to the other opening side of the underground pipe 16 is small, the tubular repair material 1 is attached to the ground. It can be inserted into the underground tube 16 and easily moved to the other opening side of the underground tube 16.
本例では、前記突起8が前記管状補修材1の周方向および軸方向に形成された前記リブ9,10になっているので、これらリブ9,10により前記管状補修材1の周方向および軸方向の強度を向上させることができるとともに、前記周方向のリブ9よりも前記軸方向のリブ10の方が高くなるように形成されているので、前記管状補修材1を前記地中埋設管16の他方の開口部側へ移動させたときの摩擦抵抗が小さく、前記管状補修材1を前記地中埋設管16内へ挿入し、この地中埋設管16の他方の開口部側へ容易に移動させることができる。   In this example, since the projection 8 is the ribs 9 and 10 formed in the circumferential direction and the axial direction of the tubular repair material 1, the circumferential direction and axis of the tubular repair material 1 are formed by the ribs 9 and 10. The strength in the direction can be improved, and the axial rib 10 is formed to be higher than the circumferential rib 9, so that the tubular repair material 1 is used as the underground pipe 16. Friction resistance when moved to the other opening side of the tube is small, the tubular repair material 1 is inserted into the underground tube 16 and easily moved to the other opening side of the underground tube 16 Can be made.
前記のように、前記地中埋設管16内へ挿入した前記管状補修材1を前記地中埋設管16の他方の開口部側へ移動させ、内部に前記ケーブル15を通した状態で前記管状補修材1を前記地中埋設管16の一方の開口部から他方の開口部に亘って配置した後、図11に示すように、前記地中埋設管16を適宜の固定手段19により前記地中埋設管16に固定する。前記固定手段19としては、前記地中埋設管16と前記管状補修材1との間に、たとえばエポキシ樹脂やモルタル等を注入して固定する。このようにして内部にケーブル15が布設されている地中埋設管16の補修が終了する。   As described above, the tubular repair material 1 inserted into the underground tube 16 is moved to the other opening side of the underground tube 16, and the cable 15 is passed through the tubular repair material. After the material 1 is arranged from one opening to the other opening of the underground pipe 16, the underground pipe 16 is embedded in the underground by appropriate fixing means 19, as shown in FIG. Secure to tube 16. As the fixing means 19, for example, an epoxy resin or mortar is injected and fixed between the underground pipe 16 and the tubular repair material 1. In this way, the repair of the underground pipe 16 in which the cable 15 is laid is completed.
このようにすることにより、大掛かりな装置が必要とならず、また従来よりも作業工程が少なくなり、前記地中埋設管16の補修を簡単な作業で容易に行うことができるとともに、前記地中埋設管16の内部に前記ケーブル15が布設されていてもこのケーブル15に邪魔されることなく、前記地中埋設管16の補修を行うことができる。   By doing in this way, a large-scale device is not necessary, and the work process is reduced as compared with the prior art, and the underground pipe 16 can be easily repaired by a simple operation. Even if the cable 15 is laid inside the buried pipe 16, the underground pipe 16 can be repaired without being disturbed by the cable 15.
以上前記地中埋設管16に前記ケーブル15が布設されている場合の地中埋設管補修方法について説明したが、前記地中埋設管16に前記ケーブル15が布設されていない場合であっても、前記管状補修材1を構成する弾性基材2の湾曲内部へ前記ケーブル15を入れる工程を除き、前記方法と同様にして前記地中埋設管16の補修を行う。すなわち、特に図示しないが、前記マンホール17a内へ、管状補修材1を構成する長尺の弾性基材2を挿入し、前記マンホール17a内で、前記弾性基材2の湾曲方向の端部3,4同士を、先端側から前記結合手段5によって結合して管状補修材1を順次形成する。そして、前記管状補修材1の先端側を、前記地中埋設管16内へ一方の開口部から挿入した後、前記マンホール17a内で、管状補修材1を構成する弾性基材2の後端側へ向かって管状補修材1を順次形成しながら、この管状補修材1を前記地中埋設管16の他方の開口部側へ移動させ、前記管状補修材1を前記地中埋設管16の一方の開口部から他方の開口部に亘って配置する。そして、前記地中埋設管16の一方の開口部から他方の開口部に亘って配置した前記管状補修材1を、前記固定手段19により固定し、前記地中埋設管16の補修が終了する。   Although the underground buried pipe repairing method in the case where the cable 15 is installed in the underground pipe 16 has been described above, even if the cable 15 is not installed in the underground pipe 16, The underground pipe 16 is repaired in the same manner as in the above method except for the step of putting the cable 15 into the curved base material 2 constituting the tubular repair material 1. That is, although not particularly illustrated, a long elastic base material 2 constituting the tubular repair material 1 is inserted into the manhole 17a, and the end portion 3 of the elastic base material 2 in the bending direction is inserted into the manhole 17a. The tubular repair material 1 is sequentially formed by joining the four together from the distal end side by the joining means 5. And after inserting the front end side of the said tubular repair material 1 into the said underground pipe | tube 16 from one opening part, the rear end side of the elastic base material 2 which comprises the tubular repair material 1 in the said manhole 17a The tubular repair material 1 is sequentially formed toward the other side, the tubular repair material 1 is moved to the other opening side of the underground pipe 16, and the tubular repair material 1 is moved to one of the underground pipes 16. It arrange | positions ranging from an opening part to the other opening part. And the said tubular repair material 1 arrange | positioned ranging from one opening part of the said underground pipe | tube 16 to the other opening part is fixed by the said fixing means 19, and the repair of the said underground pipe | tube 16 is complete | finished.
このようにすることにより、前記地中埋設管16の補修を簡単な作業で容易に行うことができる。   By doing in this way, the underground pipe | tube 16 can be easily repaired by a simple operation.
以上説明した第一例の地中埋設管補修方法では、前記管状補修材1を前記地中埋設管16の一方の開口部から他方の開口部に亘って配置する際、前記地中埋設管16内へ一方の開口部から挿入した前記管状補修材1の移動は、前記管状補修材1の先端部に取り付けた牽引用ロープ18を他方の開口部側から引っ張ることにより行っているが、他の方法として、前記地中埋設管16内における前記管状補修材1の移動をより一層容易にするものとして、先端部を円錐形状とする管状ガイド体を使用するとよい。以下、管状ガイド体を使用した管状補修材1の移動方法を図12乃至図18に基づいて説明する。   In the underground buried pipe repair method of the first example described above, when the tubular repair material 1 is arranged from one opening to the other opening of the underground buried pipe 16, the underground buried pipe 16 is disposed. The movement of the tubular repair material 1 inserted from one opening into the inside is performed by pulling the pulling rope 18 attached to the tip of the tubular repair material 1 from the other opening side. As a method, it is preferable to use a tubular guide body having a conical tip as a means for facilitating the movement of the tubular repair material 1 in the underground pipe 16. Hereinafter, a method of moving the tubular repair material 1 using the tubular guide body will be described with reference to FIGS.
図12は管状ガイド体の一例を示す斜視図、図13は図12に示す管状ガイド体を軸方向に2分割した一方の分割部材の内面側平面図、図14は図12に示す管状ガイド体を軸方向に2分割した他方の分割部材の内面側平面図、図15は管状ガイド体が接続される管状補修材の斜視図、図16は管状ガイド体を管状補修材に接続した状態を示す縦断面図、図17は管状ガイド体に牽引用紐を連結した状態を示す斜視図、図18は管状ガイド体を使用し、管状補修材を挿入した地中埋設管の他方の開口部から牽引用紐を引っ張って管状補修材を移動させる状態を示す説明図である。   12 is a perspective view showing an example of a tubular guide body, FIG. 13 is a plan view of the inner surface of one divided member obtained by dividing the tubular guide body shown in FIG. 12 in the axial direction, and FIG. 14 is a tubular guide body shown in FIG. FIG. 15 is a perspective view of a tubular repair material to which the tubular guide body is connected, and FIG. 16 shows a state in which the tubular guide body is connected to the tubular repair material. FIG. 17 is a perspective view showing a state in which a pulling string is connected to the tubular guide body, and FIG. 18 is a drawing using the tubular guide body and pulling from the other opening of the underground buried pipe into which the tubular repair material is inserted. It is explanatory drawing which shows the state which pulls a cord and moves a tubular repair material.
本例の管状ガイド体20は、図12乃至図14に示すように、前記管状補修材1よりもやや大径の本体部20aの先端部に、先端方向に向かって縮径となる円錐部20bを有する形状になっており、軸方向に半割状態で2分割された2つの分割部材21,22で構成されている。前記2つの分割部材21,22には、分割面23,24に、前記2つの分割部材21,22の分割面23,24同士を結合して前記管状ガイド体20を形成する結合手段25と、この結合手段25により前記2つの分割部材21,22が結合されて形成された管状ガイド体20の後部開口端部を前記管状補修材1の開口端部に接続する接続手段26とを備えた構造になっている。   As shown in FIGS. 12 to 14, the tubular guide body 20 of the present example has a conical portion 20 b that is reduced in diameter toward the distal end at the distal end portion of the main body portion 20 a slightly larger in diameter than the tubular repair material 1. And is composed of two split members 21 and 22 that are split in half in the axial direction. A coupling means 25 for coupling the divided surfaces 23, 24 of the two divided members 21, 22 to the divided surfaces 23, 24 to the two divided members 21, 22 to form the tubular guide body 20; And a connecting means 26 for connecting a rear opening end of the tubular guide body 20 formed by joining the two divided members 21 and 22 to the opening end of the tubular repair material 1. It has become.
前記管状ガイド体20を構成する2つの分割部材21,22は、プラスチック、金属等で形成されるが、本例ではプラスチックで形成されている。また、前記2つの分割部材21,22同士を結合して前記管状ガイド体20を形成する前記結合手段25にあっては、本例では、前記一方の分割部材21の分割面23の長手方向に形成された嵌合溝部27と、前記他方の分割部材22の分割面24に長手方向に形成され、前記嵌合溝部27に嵌合する突条部28とから構成されている。ただし、前記結合手段25は、前記嵌合溝部27と前記突条部28とから構成されるものに限定されるものではない。   The two divided members 21 and 22 constituting the tubular guide body 20 are made of plastic, metal or the like, but are made of plastic in this example. Further, in the coupling means 25 for coupling the two divided members 21 and 22 to form the tubular guide body 20, in this example, in the longitudinal direction of the divided surface 23 of the one divided member 21. The fitting groove 27 is formed, and a protrusion 28 formed in the longitudinal direction on the dividing surface 24 of the other dividing member 22 and fitted in the fitting groove 27. However, the coupling means 25 is not limited to the one constituted by the fitting groove 27 and the protrusion 28.
前記結合手段25を構成する前記嵌合溝部27は、溝開口部より溝奥部が幅広になっており、また前記突条部28は、その頭部が前記嵌合溝部27の溝形に合わせてこの嵌合溝部27の溝開口部より幅広になっており、前記嵌合溝部27内へ前記突条部28をプラスチックの材質変形を利用して押し込み嵌合して結合するようになっている。   The fitting groove 27 constituting the coupling means 25 has a groove depth wider than the groove opening, and the protrusion 28 has a head that matches the groove shape of the fitting groove 27. The lever is wider than the groove opening of the fitting groove 27, and the protrusion 28 is pushed into the fitting groove 27 using plastic deformation to be coupled. .
また、前記結合手段25により前記2つの分割部材21,22が結合されて形成された管状ガイド体20の後部開口端部を前記管状補修材1の開口端部に接続する前記接続手段26にあっては、本例では後部開口端部の内周面に周方向に沿って形成された環状突条29で構成されている。一方、前記管状ガイド体20が接続される管状補修材1にあっては、図15に示すように、その先端側の開口端部に、前記管状ガイド体20の後部開口端部との接続手段30を備えている。この接続手段30は、本例では、前記管状補修材1の先端側の開口端部外周面に周方向に沿って形成され、前記管状ガイド体20の後部開口端部に形成された前記環状突条29が嵌合する環状嵌合溝31で構成されている。そして、前記管状ガイド体20の後部開口端部を、弾性変形によって若干拡径させながら、前記管状補修材1の先端側の開口端部外周へ挿入した後、前記管状ガイド体20の後部開口端部に形成された前記環状突条29を、前記管状補修材1の先端側の開口端部に形成された前記管状嵌合溝31に嵌合させて、前記管状ガイド体20と前記管状補修材1とが接続されるようになっている(図16参照)。   Further, the connecting means 26 for connecting the rear opening end of the tubular guide body 20 formed by connecting the two split members 21 and 22 by the connecting means 25 to the opening end of the tubular repair material 1 is provided. In this example, it is composed of an annular ridge 29 formed along the circumferential direction on the inner peripheral surface of the rear opening end. On the other hand, in the tubular repair material 1 to which the tubular guide body 20 is connected, as shown in FIG. 15, connecting means for connecting the rear opening end of the tubular guide body 20 to the opening end of the distal end side thereof. 30. In this example, the connecting means 30 is formed on the outer peripheral surface of the opening end portion on the distal end side of the tubular repair material 1 along the circumferential direction, and the annular protrusion formed on the rear opening end portion of the tubular guide body 20. It is comprised by the annular fitting groove | channel 31 with which the strip | line 29 fits. And after inserting the rear opening end of the tubular guide body 20 into the outer periphery of the opening end on the distal end side of the tubular repair material 1 while slightly expanding the diameter by elastic deformation, the rear opening end of the tubular guide body 20 The tubular guide body 20 and the tubular repair material are fitted into the tubular fitting groove 31 formed in the opening end portion on the distal end side of the tubular repair material 1 with the annular ridge 29 formed in the portion. 1 is connected (see FIG. 16).
また、前記管状ガイド体20の本体部20aの先端部に有する前記円錐部20bには、紐通し穴32が設けられており、牽引用紐33を連結できるようになっている
前記管状ガイド体20は、つぎのようにして使用される。まず、前記地中埋設管16の一方の開口部が開口する前記マンホール17a内で、前記管状ガイド体20を構成する一方の分割部材21の内部へ分割開口部から前記ケーブル15を入れた後、前記分割部材21の分割面23へ他方の分割部材22の分割面24を前記結合手段25により結合して、内部に前記ケーブル15を通した状態の管状ガイド体20を形成する。
The tubular guide body 20 is provided with a string passing hole 32 in the conical portion 20b at the distal end of the main body 20a of the tubular guide body 20 so that the traction string 33 can be connected. Is used as follows: First, in the manhole 17a in which one opening of the underground pipe 16 is opened, after the cable 15 is inserted from the divided opening into the inside of one dividing member 21 constituting the tubular guide body 20, The dividing surface 24 of the other dividing member 22 is coupled to the dividing surface 23 of the dividing member 21 by the coupling means 25 to form the tubular guide body 20 in a state in which the cable 15 is passed inside.
つぎに、前記マンホール17a内において、前記管状補修材1を構成する弾性基材2の湾曲内部へこの弾性基材2の湾曲方向の両端部3,4間から前記ケーブル15を入れた後、前記弾性基材2の湾曲方向の端部3,4同士を前記結合手段5により結合して内部に前記ケーブル15を通した状態の管状補修材1を形成した後、図16に示すように、この管状補修材1の先端側の開口端部と前記管状ガイド体20の後部開口端部とを前記接続手段26,30で接続し、この状態で前記管状ガイド体20を先頭にして前記管状補修材1を前記地中埋設管16内へ一方の開口部から挿入する。   Next, in the manhole 17a, the cable 15 is inserted into the curved base material 2 constituting the tubular repair material 1 from both ends 3 and 4 in the curved direction of the elastic base material 2; After the end portions 3 and 4 in the bending direction of the elastic base material 2 are joined together by the joining means 5 to form the tubular repair material 1 in a state in which the cable 15 is passed through, as shown in FIG. The opening end on the distal end side of the tubular repair material 1 and the rear opening end of the tubular guide body 20 are connected by the connecting means 26 and 30, and in this state, the tubular repair material with the tubular guide body 20 at the head. 1 is inserted into the underground pipe 16 from one opening.
この後は、前記第一例で説明したように、前記管状補修材1を構成する弾性基材2の湾曲方向の両端部3,4間から前記ケーブル15を入れて、前記端部3,4同士を、前記マンホール17a内で、後端側へ向かって前記結合手段5により順次結合して、内部に前記ケーブル15を通した状態の管状補修材1を形成しながら、この管状補修材1を前記地中埋設管16の一方の開口部から他方の開口部に亘って配置する。   Thereafter, as described in the first example, the cable 15 is inserted from both ends 3 and 4 in the bending direction of the elastic base material 2 constituting the tubular repair material 1, and the ends 3 and 4 are inserted. The tubular repair material 1 is formed by sequentially joining the manholes 17a toward the rear end side by the coupling means 5 to form the tubular repair material 1 in a state where the cable 15 is passed through the manhole 17a. It arrange | positions ranging from one opening part of the said underground pipe | tube 16 to the other opening part.
このように、前記管状ガイド体20を先頭にして前記管状補修材1を前記地中埋設管16内へ一方の開口部から挿入すると、前記地中埋設管16に曲線部分があっても、前記管状ガイド体20の先端部に有する前記円錐部20bが、前記地中埋設管16の曲線部分に応じて前記管状ガイド体20に接続されている前記管状補修材1を曲がり方向へガイドするので、前記地中埋設管16内における前記管状補修材1の移動を一層容易にすることができるものとなる。   Thus, when the tubular repair material 1 is inserted into the underground buried pipe 16 from one opening with the tubular guide body 20 at the top, even if the underground buried pipe 16 has a curved portion, Since the conical portion 20b at the distal end of the tubular guide body 20 guides the tubular repair material 1 connected to the tubular guide body 20 in a bending direction according to the curved portion of the underground tube 16, The movement of the tubular repair material 1 in the underground pipe 16 can be further facilitated.
前記地中埋設管16内へ挿入した前記管状補修材1を、前記地中埋設管16の他方の開口部から引っ張って移動させる場合、図17に示すように前記管状ガイド体20の円錐部20bに設けられた紐通し穴32に前記牽引用紐33を連結し、図18に示すように、前記地中埋設管16の他方の開口部側から前記牽引用紐33を引っ張って、前記地中埋設管16内に一方の開口部から挿入した前記管状補修材1を移動させることができる。   When the tubular repair material 1 inserted into the underground pipe 16 is pulled and moved from the other opening of the underground pipe 16, the conical portion 20b of the tubular guide body 20 is shown in FIG. The traction string 33 is connected to a string passage hole 32 provided in the cable, and as shown in FIG. 18, the traction string 33 is pulled from the other opening side of the underground tube 16, and the underground The tubular repair material 1 inserted from one opening into the buried pipe 16 can be moved.
以上説明した前記管状ガイド体20は、前記地中埋設管16に前記ケーブル15が布設されていない場合にも同様にして使用することができる。   The tubular guide body 20 described above can be used in the same manner even when the cable 15 is not installed in the underground pipe 16.
つぎに、本発明に係る地中埋設管補修方法の第二例について、図19乃至図21に基づいて説明する。ただし、必要に応じて第一例で使用した図面を引用するものとする。図19はマンホールの地上の部分に設置されたロールスタンドに回転自在に支持されたロールから帯状の弾性基材を引き出してマンホール内へ挿入する工程を示す縦断面図、図20は図19に示す帯状の弾性基材を示す拡大斜視図、図21は帯状の弾性基材を加熱手段により加熱した後、加熱した帯状の弾性基材を成形機によって幅方向に湾曲して湾曲方向の両端部が開いた略C字形状の弾性基材を形成する工程を示す説明図である。   Next, a second example of the underground pipe repair method according to the present invention will be described with reference to FIGS. However, the drawings used in the first example shall be cited as necessary. FIG. 19 is a longitudinal sectional view showing a step of drawing a belt-like elastic base material from a roll rotatably supported by a roll stand installed on the ground part of the manhole, and inserting it into the manhole. FIG. 20 shows FIG. FIG. 21 is an enlarged perspective view showing a belt-like elastic base material. FIG. 21 shows a state in which the belt-like elastic base material is heated in a width direction by a molding machine after the belt-like elastic base material is heated by heating means, and both ends in the bending direction are It is explanatory drawing which shows the process of forming the open substantially C-shaped elastic base material.
図19に示すように、第一例と同様、地面40の地中に内部にケーブル41が布設されている地中埋設管42が所定間隔で垂直に立設するマンホール43a,43bで区切られた状態で埋設されている。   As shown in FIG. 19, as in the first example, the underground pipe 42 in which the cable 41 is laid inside the ground 40 is divided by manholes 43 a and 43 b that stand vertically at predetermined intervals. It is buried in the state.
本例では、帯状の弾性基材2を幅方向に湾曲して、第一例で説明した図3に示す弾性基材2aを形成した後、第一例と同様、前記弾性基材2aの湾曲方向の端部3,4同士を結合手段5により結合して、図1および図2に示す管状補修材1を形成し、この管状補修材1を使用して前記地中埋設管42の補修を行う。以下詳しく説明する。   In this example, after the band-shaped elastic substrate 2 is bent in the width direction to form the elastic substrate 2a shown in FIG. 3 described in the first example, the elastic substrate 2a is bent as in the first example. The end portions 3 and 4 in the direction are coupled by the coupling means 5 to form the tubular repair material 1 shown in FIGS. 1 and 2, and the repair of the underground pipe 42 is performed using the tubular repair material 1. Do. This will be described in detail below.
前記帯状の弾性基材2は、前記マンホール43aの地上の部分に設置されたロールスタンド44に巻回されて、ロール45を形成している。このロール45は、前記ロールスタンド44に回転自在に支持されている。   The band-shaped elastic base material 2 is wound around a roll stand 44 installed on the ground portion of the manhole 43 a to form a roll 45. The roll 45 is rotatably supported by the roll stand 44.
前記ロール45を形成する帯状の弾性基材2の幅方向の端部3a,4aには、前記帯状の弾性基材2を幅方向に湾曲して形成した弾性基材2aの湾曲方向の端部3,4同士を結合する結合手段5を備えている。この結合手段5にあっては、前記帯状の弾性基材2の幅方向における一方の端部3aの一面側(後述の突起8が形成されている側)に軸方向に形成された係止突起6と、前記帯状の弾性基材2の幅方向における他方の端部4aの他面側に軸方向に沿って形成され、前記帯状の弾性基材2を幅方向に湾曲して前記弾性基材2aを形成したときに、この弾性基材2aの湾曲方向の一方の端部3となる前記端部3aに形成された係止突起6に径方向に向かい合って周方向に噛み合うように係止する係止突起7とから構成されている。そして、帯状の弾性基材2を幅方向に湾曲して略C字状に形成した前記弾性基材2aの湾曲方向の端部3,4を、径方向の弾発力に抗して縮径させ、前記端部3,4に形成された前記係止突起6と前記係止突起7を径方向に向かい合って周方向に噛み合うように係止させると、縮径させた前記弾性基材2aの拡径方向への復元力により、前記係止突起6と前記係止突起7とがしっかりと噛み合い、前記弾性基材2aの湾曲方向の端部3,4が結合して図1および図2に示す管状補修材1が形成されるようになっている。   The end portions 3a and 4a in the width direction of the belt-like elastic base material 2 forming the roll 45 are end portions in the bending direction of the elastic base material 2a formed by bending the belt-like elastic base material 2 in the width direction. A coupling means 5 for coupling 3 and 4 is provided. In this coupling means 5, a locking projection formed in the axial direction on one surface side (side on which a projection 8 described later is formed) of one end portion 3 a in the width direction of the belt-like elastic base material 2. 6 and the other end 4a in the width direction of the band-shaped elastic substrate 2 is formed along the axial direction, and the band-shaped elastic substrate 2 is curved in the width direction to form the elastic substrate. When the elastic base material 2a is formed, the elastic base material 2a is engaged with the engaging protrusion 6 formed on the end portion 3a which is one end portion 3 in the bending direction so as to be engaged with each other in the circumferential direction. It is comprised from the latching protrusion 7. FIG. Then, the end portions 3 and 4 of the elastic base material 2a formed in a substantially C shape by bending the belt-like elastic base material 2 in the width direction are reduced in diameter against the elastic force in the radial direction. When the locking projections 6 and the locking projections 7 formed on the end portions 3 and 4 are locked so as to face each other in the radial direction and mesh with each other in the circumferential direction, the diameter of the elastic base material 2a reduced in diameter is reduced. Due to the restoring force in the diameter increasing direction, the locking projection 6 and the locking projection 7 are firmly engaged, and the end portions 3 and 4 of the elastic base material 2a in the bending direction are coupled to each other in FIG. 1 and FIG. The illustrated tubular repair material 1 is formed.
本例では、前記帯状の弾性基材2の一面側に、多数の突起8が形成されている。前記突起8は、前記帯状の弾性基材2の幅方向および長手方向に形成されたリブ9a,10aとなっている。このリブ9a,10aは、前記帯状の弾性基材2を幅方向に湾曲して、管状補修材1を構成する前記弾性基材2aを形成したときに、図1乃至図3に示す、前記管状補修材1の周方向および軸方向に形成されたリブ9,10となる。   In this example, a large number of protrusions 8 are formed on one surface side of the belt-like elastic substrate 2. The protrusions 8 are ribs 9 a and 10 a formed in the width direction and the longitudinal direction of the belt-like elastic base material 2. The ribs 9a and 10a are formed in the tubular shape shown in FIGS. 1 to 3 when the elastic base material 2a constituting the tubular repair material 1 is formed by curving the belt-like elastic base material 2 in the width direction. The ribs 9 and 10 are formed in the circumferential direction and the axial direction of the repair material 1.
前記幅方向のリブ9aと前記長手方向のリブ10aにあっては、前記幅方向のリブ9aよりも前記長手方向のリブ10aの方が高くなるように形成されており、前記管状補修材1の周方向に形成されることになる前記リブ9よりも、前記管状補修材1の軸方向に形成されることになる前記リブ10の方が高くなるように形成されている。本例では、前記突起8が前記幅方向のリブ9aと前記長手方向のリブ10aとなっているが、前記幅方向のリブ9aと前記長手方向のリブ10aのいずれか一方であってもよい。   In the ribs 9a in the width direction and the ribs 10a in the longitudinal direction, the ribs 10a in the longitudinal direction are formed higher than the ribs 9a in the width direction. The rib 10 to be formed in the axial direction of the tubular repair material 1 is formed to be higher than the rib 9 to be formed in the circumferential direction. In this example, the protrusion 8 is the rib 9a in the width direction and the rib 10a in the longitudinal direction, but may be either one of the rib 9a in the width direction or the rib 10a in the longitudinal direction.
前記地中埋設管42の補修にあたっては、まず前記マンホール43aの地上の部分に設置されたロールスタンドに支持されているロール45から、帯状の弾性基材2を引き出し、これを前記マンホール43a内へ挿入する。そして、前記マンホール43a内で、図21に示すように、加熱手段46により前記帯状の弾性基材2を加熱する。   In repairing the underground pipe 42, first, the belt-like elastic base material 2 is pulled out from the roll 45 supported by a roll stand installed on the ground portion of the manhole 43a, and this is drawn into the manhole 43a. insert. Then, in the manhole 43a, as shown in FIG. 21, the belt-like elastic substrate 2 is heated by the heating means 46.
つぎに、前記加熱手段46により加熱された帯状の弾性基材2を、幅方向に湾曲して、図3に示す、湾曲方向の端部3,4が開いた略C字状の弾性基材2aを形成する。前記帯状の弾性基材2の湾曲は、成形機47によって行う。この成形機47は、長手方向の一端部(前記加熱手段46側)が緩やかに湾曲しており、この長手方向の一端部から他端側へ向かって幅方向の両端部が徐々に立ち上がるようにして形成されて、幅方向の断面形状において、長手方向の一端部から他端側へ向かって徐々に湾曲が大きくなるように湾曲しており、長手方向の他端部が断面略C字状に形成されている。このような成形機47の一端部から他端部へ、前記帯状の弾性基材2を通すことにより、この帯状の弾性基材2を幅方向に湾曲させ、湾曲方向の端部3,4が開いた略C字状の弾性基材2aを形成する。   Next, the belt-like elastic base material 2 heated by the heating means 46 is curved in the width direction, and the substantially C-shaped elastic base material shown in FIG. 2a is formed. The band-shaped elastic substrate 2 is bent by a molding machine 47. In this molding machine 47, one end portion in the longitudinal direction (the heating means 46 side) is gently curved, and both end portions in the width direction gradually rise from one end portion in the longitudinal direction toward the other end side. In the cross-sectional shape in the width direction, the other end portion in the longitudinal direction has a substantially C-shaped cross section. Is formed. By passing the belt-like elastic base material 2 from one end portion to the other end portion of the molding machine 47, the belt-like elastic base material 2 is bent in the width direction, and the end portions 3 and 4 in the bending direction are formed. An open substantially C-shaped elastic base material 2a is formed.
前記弾性基材2aを形成した後は、第一例と同様、この弾性基材2aの湾曲内部へこの弾性基材2aの湾曲方向の両端部3,4間から前記ケーブル41を入れた後、これら端部3,4同士を前記結合手段5により結合して内部に前記ケーブル41を通した状態の管状補修材1を形成する。そして、この管状補修材1を、第一例と同様、前記地中埋設管42内へ、前記マンホール43aに開口する一方の開口部から挿入した後、後端側へ向かって順次前記ケーブル41を入れた状態の地中埋設管42を形成しながら、この地中埋設管42を前記マンホール43bに開口する他方の開口部へ移動させる。そして、第一例と同様、内部に前記ケーブル41を入れた状態の管状補修材1を、前記地中埋設管42の一方の開口部から他方の開口部に亘って配置した後、前記管状補修材1を前記地中埋設管42内に前記固定手段19で固定して前記地中埋設管42の補修が終了する。   After forming the elastic base material 2a, as in the first example, after inserting the cable 41 from between the ends 3, 4 of the elastic base material 2a in the bending direction into the inside of the elastic base material 2a, The end portions 3 and 4 are joined together by the joining means 5 to form the tubular repair material 1 in a state where the cable 41 is passed through the inside. Then, the tubular repair material 1 is inserted into the underground pipe 42 from one of the openings opened in the manhole 43a as in the first example, and then the cables 41 are sequentially placed toward the rear end side. The underground pipe 42 is moved to the other opening that opens in the manhole 43b while forming the underground pipe 42 in the inserted state. As in the first example, after the tubular repair material 1 with the cable 41 inserted therein is arranged from one opening to the other opening of the underground pipe 42, the tubular repair is performed. The material 1 is fixed in the underground pipe 42 by the fixing means 19, and the repair of the underground pipe 42 is completed.
前記管状補修材1を前記地中埋設管42の一方の開口部から他方の開口部に亘って配置する際、前記管状補修材1の移動は、第一例で説明した前記牽引用ロープ18を使用して行ってもよいし、第一例で説明した前記管状ガイド体20を使用して行ってもよい。前記管状ガイド体20を使用する場合には、図示しないが、前記帯状の弾性基材2の先端部に、幅方向に沿って溝部を形成する。これにより、前記帯状の弾性基材2を、幅方向に湾曲して、湾曲方向の端部3,4が開いた略C字状の弾性基材2aを形成し、さらにはこの弾性基材2aから前記管状補修材1を形成したときに、前記溝部が、図15に示す、前記管状補修材1の先端側の開口端部の外周面に周方向に沿って形成された前記環状嵌合溝32になる。そして、この環状嵌合溝32に前記管状ガイド体20の後部開口端部に形成された嵌合突条30を嵌合して、前記管状ガイド体20を前記管状補修材1に接続し、この管状補修材1の移動を行う。   When the tubular repair material 1 is arranged from one opening to the other opening of the underground pipe 42, the movement of the tubular repair material 1 is performed using the traction rope 18 described in the first example. It may be performed by using the tubular guide body 20 described in the first example. When the tubular guide body 20 is used, although not shown, a groove portion is formed along the width direction at the distal end portion of the belt-like elastic base material 2. As a result, the belt-like elastic base material 2 is bent in the width direction to form a substantially C-shaped elastic base material 2a with the ends 3 and 4 in the bending direction opened, and this elastic base material 2a. When the tubular repair material 1 is formed from the annular fitting groove, the groove portion is formed along the circumferential direction on the outer peripheral surface of the open end portion of the tubular repair material 1 shown in FIG. 32. Then, a fitting protrusion 30 formed at the rear opening end of the tubular guide body 20 is fitted into the annular fitting groove 32 to connect the tubular guide body 20 to the tubular repair material 1. The tubular repair material 1 is moved.
第二例の地中埋設管補修方法によれば、第一例と同様、大掛かりな装置が必要とならず、また従来よりも作業工程が少なくなり、前記地中埋設管42の補修を簡単な作業で容易に行うことができるとともに、前記地中埋設管42の内部に前記ケーブル41が布設されていてもこのケーブル41に邪魔されることなく、前記地中埋設管42の補修を行うことができる。また、前記帯状の弾性基材2を巻回した前記ロール45は、コンパクトに形成することができ、補修現場へは、このようにコンパクトに形成された前記ロール45を運搬すればよいので、運搬しやすい。   According to the underground pipe repairing method of the second example, as in the first example, a large-scale device is not required, and the work process is reduced as compared with the prior art, and the repair of the underground pipe 42 is simplified. The work can be easily performed, and even if the cable 41 is laid inside the underground pipe 42, the underground pipe 42 can be repaired without being obstructed by the cable 41. it can. In addition, the roll 45 around which the belt-shaped elastic base material 2 is wound can be formed compactly, and the roll 45 formed in this manner may be transported to the repair site. It's easy to do.
以上前記帯状の弾性基材2を、幅方向に湾曲して、湾曲方向の端部3,4が開いた略C字状の弾性基材2aを形成し、この弾性基材2aから前記管状補修材1を形成して前記地中埋設管42の補修を行う場合について説明したが、前記帯状の弾性基材2を幅方向に湾曲して、湾曲方向の端部3,4が閉じて上下、すなわち径方向に重なり合った状態の図7に示す弾性基材2bを形成し、その後、周方向に湾曲した前記弾性基材2aの湾曲方向の端部3,4同士を結合手段5により結合して、図5および図6に示す管状補修材1を形成し、この管状補修材1を使用して前記地中埋設管42の補修を行ってもよい。図22は、湾曲方向の端部3,4が閉じて上下、すなわち径方向に重なり合った状態の弾性基材2bを形成する帯状の弾性基材2を示す斜視図である。この図22に示す帯状の弾性基材2の一面側には、多数の突起8が多数形成されている。前記突起8は、図20に示す帯状の弾性基材2と同様、幅方向及び長手方向に形成されたリブ9a,10aとなっている。また、前記帯状の弾性基材2の幅方向の端部3a,4aには、前記帯状の弾性基材2を幅方向に湾曲して形成した弾性基材2bの湾曲方向の端部3,4同士を結合する結合手段5を備えている。この結合手段5にあっては、前記帯状の弾性基材2の幅方向における一方の端部3aの端面に軸方向に形成された係合突条12と、前記帯状の弾性基材2の幅方向における他方の端部4aの端面に軸方向に沿って形成され、前記帯状の弾性基材2を幅方向に湾曲して前記弾性基材2bを形成したときに、この弾性基材2bの湾曲方向の一方の端部3となる前記端部3aに形成された係合突条12が係合する係合溝13とから構成されている。   As described above, the belt-shaped elastic base material 2 is curved in the width direction to form a substantially C-shaped elastic base material 2a with the ends 3 and 4 in the bending direction opened, and the tubular repair is performed from the elastic base material 2a. Although the case where the underground pipe 42 is repaired by forming the material 1 is described, the belt-shaped elastic base material 2 is bent in the width direction, and the end portions 3 and 4 in the bending direction are closed up and down, That is, the elastic base material 2b shown in FIG. 7 in a state of being overlapped in the radial direction is formed, and then the end portions 3 and 4 of the elastic base material 2a curved in the circumferential direction are joined together by the joining means 5. The tubular repair material 1 shown in FIGS. 5 and 6 may be formed, and the underground repair pipe 1 may be used to repair the underground pipe 42. FIG. 22 is a perspective view showing the belt-like elastic base material 2 that forms the elastic base material 2b in a state where the end portions 3 and 4 in the bending direction are closed and overlapped in the vertical direction, that is, in the radial direction. A large number of protrusions 8 are formed on one surface side of the belt-like elastic base material 2 shown in FIG. The protrusions 8 are ribs 9a and 10a formed in the width direction and the longitudinal direction as in the belt-like elastic base material 2 shown in FIG. Further, at the end portions 3a and 4a in the width direction of the band-shaped elastic base material 2, the end portions 3 and 4 in the bending direction of the elastic base material 2b formed by bending the band-shaped elastic base material 2 in the width direction. A coupling means 5 for coupling each other is provided. In this coupling means 5, the engagement protrusion 12 formed in the axial direction on the end face of one end portion 3 a in the width direction of the belt-like elastic substrate 2, and the width of the belt-like elastic substrate 2. When the elastic base material 2b is formed by bending the belt-like elastic base material 2 in the width direction, the elastic base material 2b is curved on the end surface of the other end portion 4a in the direction. It is comprised from the engaging groove 13 with which the engaging protrusion 12 formed in the said edge part 3a used as the one edge part 3 of a direction engages.
そして、帯状の弾性基材2を幅方向に湾曲して、湾曲方向の端部3,4が閉じて上下、すなわち径方向に重なり合った状態に形成した図7に示す弾性基材2bの湾曲方向の端部3,4を、径方向の弾発力に抗して拡径させ、前記一方の端部3aの端面に形成された係合突条12を、前記他方の端部4の端面に形成された係合溝13に係合させると、拡径させた前記弾性基材2bの縮径方向への復元力により前記係合突条12が前記係合溝13にしっかりと係合し、前記弾性基材2bの湾曲方向の端部3,4同士が結合して図5および図6に示す管状補修材1が形成されるようになっている。   And the bending direction of the elastic base material 2b shown in FIG. 7 formed in the state which curved the strip | belt-shaped elastic base material 2 in the width direction, the edge parts 3 and 4 of the bending direction closed, and it overlapped up and down, ie, radial direction, was formed. The end portions 3 and 4 are expanded in diameter against the elastic force in the radial direction, and the engaging protrusion 12 formed on the end surface of the one end portion 3 a is formed on the end surface of the other end portion 4. When engaged with the formed engagement groove 13, the engagement protrusion 12 is firmly engaged with the engagement groove 13 by the restoring force in the reduced diameter direction of the elastic base material 2 b whose diameter has been expanded, End portions 3 and 4 in the bending direction of the elastic base material 2b are joined together to form the tubular repair material 1 shown in FIGS.
前記マンホール43a内で、前記帯状の弾性基材2を幅方向に湾曲して、湾曲方向の端部3,4が閉じて上下、すなわち径方向に重なり合った図7に示す弾性基材2bを形成する工程について、図23に基づいて説明する。図23は帯状の弾性基材を加熱手段により加熱した後、加熱した帯状の弾性基材を成形機によって幅方向に湾曲して湾曲方向の端部3,4が閉じて上下、すなわち径方向に重なり合った弾性基材を形成する工程を示す説明図である。   In the manhole 43a, the band-shaped elastic substrate 2 is curved in the width direction, and the end portions 3 and 4 in the bending direction are closed to form the elastic substrate 2b shown in FIG. The process to perform is demonstrated based on FIG. In FIG. 23, after heating the belt-like elastic base material by the heating means, the heated belt-like elastic base material is bent in the width direction by a molding machine, and the end portions 3 and 4 in the bending direction are closed, so It is explanatory drawing which shows the process of forming the overlapping elastic base material.
前記マンホール43a内で、前記帯状の弾性基材2を湾曲して前記弾性基材2bを形成するには、まず、加熱手段46によって前記帯状の弾性基材2を加熱する。そして、加熱された前記帯状の弾性基材2を、幅方向に湾曲して、湾曲方向の端部3,4が閉じて上下、すなわち径方向に重なり合った弾性基材2bを形成する。前記帯状の弾性基材2の湾曲は、成形機48によって行う。この成形機48は、長手方向の一端部(前記加熱手段46側)が緩やかに湾曲しており、この長手方向の一端部から他端部へ向かって幅方向の両端部が徐々に立ち上がるようにして形成されて、幅方向の断面形状において、長手方向の一端部から他端部へ向かって徐々に湾曲が大きくなるように湾曲しており、長手方向の他端部において、湾曲方向の端部3,4が閉じて上下、すなわち径方向に重なり合った形状に形成されている。このような成形機48の一端側から他端側へ、前記帯状の弾性基材2を通すことにより、この帯状の弾性基材2を幅方向に湾曲させ、湾曲方向の端部3,4が閉じて上下、すなわち径方向に重なり合った状態に成形して、前記弾性基材2bを形成する。   To form the elastic base material 2b by bending the belt-like elastic base material 2 in the manhole 43a, first, the belt-like elastic base material 2 is heated by the heating means 46. Then, the heated elastic band-like base material 2 is bent in the width direction, and the end portions 3 and 4 in the bending direction are closed to form an elastic base material 2b that overlaps in the vertical direction, that is, in the radial direction. The band-shaped elastic substrate 2 is bent by a molding machine 48. In this molding machine 48, one end in the longitudinal direction (the heating means 46 side) is gently curved, and both end portions in the width direction gradually rise from one end in the longitudinal direction to the other end. In the cross-sectional shape in the width direction, the end portion in the bending direction is curved at the other end portion in the longitudinal direction. 3 and 4 are closed and formed into a shape overlapping in the vertical direction, that is, in the radial direction. By passing the band-shaped elastic substrate 2 from one end side to the other end side of the molding machine 48, the band-shaped elastic substrate 2 is bent in the width direction, and the end portions 3 and 4 in the bending direction are formed. The elastic base material 2b is formed by closing and forming it in a state of overlapping vertically, that is, in the radial direction.
そして、このようにして形成した前記弾性基材2bの湾曲方向の端部3,4同士を、前記結合手段5により結合して、図5および図6に示す管状補修材1を形成し、この管状補修材1を使用して前記地中埋設管42の補修を行う。   And the edge parts 3 and 4 of the bending direction of the said elastic base material 2b formed in this way are couple | bonded by the said coupling means 5, and the tubular repair material 1 shown in FIG.5 and FIG.6 is formed, This Using the tubular repair material 1, the underground pipe 42 is repaired.
以上前記地中埋設管42に前記ケーブル41が布設されている場合の地中埋設管補修方法について説明したが、前記地中埋設管42に前記ケーブル41が布設されていない場合であっても、前記管状補修材1を構成する弾性基材2の湾曲内部へ前記ケーブル41を入れる工程を除き、前記方法と同様にして前記地中埋設管42の補修を行う。すなわち、前記マンホール43a内へ前記帯状の弾性基材2を挿入した後、前記マンホール43a内で前記帯状の弾性基材2を前記加熱手段46により加熱し、その後前記帯状の弾性基材2を前記成形機47または前記成形機48により幅方向に湾曲し、湾曲した弾性基材2の幅方向の端部3,4同士を結合手段5により結合して前記管状補修材1を形成し、この管状補修材1を前記地中埋設管42の一方の開口部から他方の開口部に亘って配置した後に、前記地中埋設管42内に固定して、前記地中埋設管42の補修を行う。   Although the underground buried pipe repair method when the cable 41 is installed in the underground pipe 42 has been described above, even if the cable 41 is not installed in the underground pipe 42, The underground pipe 42 is repaired in the same manner as in the above method except for the step of inserting the cable 41 into the curved base material 2 constituting the tubular repair material 1. That is, after the band-shaped elastic substrate 2 is inserted into the manhole 43a, the band-shaped elastic substrate 2 is heated by the heating means 46 in the manhole 43a, and then the band-shaped elastic substrate 2 is moved to the manhole 43a. The tubular repair material 1 is formed by bending in the width direction by the molding machine 47 or the molding machine 48, and joining the end portions 3 and 4 in the width direction of the curved elastic base material 2 by the coupling means 5. After the repair material 1 is arranged from one opening to the other opening of the underground pipe 42, the repair material 1 is fixed in the underground pipe 42 to repair the underground pipe 42.
本発明に係る地中埋設管補修方法で使用する管状補修材の一例を示す斜視図。The perspective view which shows an example of the tubular repair material used with the underground pipe repair method which concerns on this invention. 図1のA−A線拡大断面図。The AA line expanded sectional view of FIG. 図1に示す管状補修材を構成する弾性基材の拡大断面図。The expanded sectional view of the elastic base material which comprises the tubular repair material shown in FIG. 表面に突起が形成された管状補修材の他例を示す平面図。The top view which shows the other example of the tubular repair material in which protrusion was formed in the surface. 本発明に係る地中埋設管補修方法で使用する管状補修材の他例を示す斜視図。The perspective view which shows the other example of the tubular repair material used with the underground pipe repair method which concerns on this invention. 図5のB−B線拡大断面図。The BB line expanded sectional view of FIG. 図5に示す管状補修材を構成する弾性基材の拡大断面図。The expanded sectional view of the elastic base material which comprises the tubular repair material shown in FIG. 本発明に係る地中埋設管補修方法の第一例で、地中埋設管の一方の開口部が開口するマンホール内へ管状補修材を構成する弾性基材を挿入する工程を示す縦断面図。The longitudinal cross-sectional view which shows the process of inserting the elastic base material which comprises a tubular repair material in the manhole which one opening part of an underground pipe | tube opens by the first example of the underground pipe | tube repair method which concerns on this invention. 地中埋設管の一方の開口部が開口するマンホール内へ挿入した弾性基材の湾曲内部へ、前記弾性基材の湾曲方向の両端部間からケーブルを入れた後、前記弾性基材の湾曲方向の端部同士を結合手段により結合して管状補修材を形成する工程を示す説明図。After inserting a cable from between both ends of the bending direction of the elastic base material into the bending inside of the elastic base material inserted into the manhole in which one opening of the underground pipe opens, the bending direction of the elastic base material Explanatory drawing which shows the process of joining the edge parts of this by a coupling | bonding means, and forming a tubular repair material. 地中埋設管の内部へ一方の開口部から挿入した管状補修材を、前記地中埋設管の他方の開口部側へ移動させる工程を示す横断面図。The cross-sectional view which shows the process of moving the tubular repair material inserted into the inside of the underground buried pipe from one opening part to the other opening part side of the underground buried pipe. 地中埋設管16の一方の開口部から他方の開口部に亘って配置した前記管状補修材を固定した状態を示す縦断面図。The longitudinal cross-sectional view which shows the state which fixed the said tubular repair material arrange | positioned ranging from one opening part of the underground pipe | tube 16 to the other opening part. 管状補修材を移動するための他の方法で使用する管状ガイド体を示す斜視図。The perspective view which shows the tubular guide body used with the other method for moving a tubular repair material. 図12に示す管状ガイド体を軸方向に2分割した一方の分割部材の内面側平面図。The inner surface side top view of one division member which divided the tubular guide body shown in FIG. 12 into 2 in the axial direction. 図12に示す管状ガイド体を軸方向に2分割した他方の分割部材の内面側平面図。The inner surface side top view of the other division member which divided the tubular guide body shown in FIG. 12 into 2 in the axial direction. 管状ガイド体を接続する管状補修材の斜視図。The perspective view of the tubular repair material which connects a tubular guide body. 管状ガイド体を管状補修材に接続した状態を示す縦断面図。The longitudinal cross-sectional view which shows the state which connected the tubular guide body to the tubular repair material. 管状ガイド体に牽引用紐を連結した状態を示す斜視図。The perspective view which shows the state which connected the pulling string to the tubular guide body. 管状ガイド体を使用し、管状補修材を挿入した地中埋設管の他方の開口部から牽引用紐を引っ張って管状補修材を移動させる状態を示す説明図。Explanatory drawing which shows the state which pulls the tow string from the other opening part of the underground pipe | tube which inserted the tubular repair material using the tubular guide body, and moves a tubular repair material. 本発明に係る地中埋設管補修方法の第二例で、マンホールの地上の部分に設置されたロールスタンドに回転自在に支持されたロールから帯状の弾性基材を引き出してマンホール内へ挿入する工程を示す縦断面図。In the second example of the underground buried pipe repair method according to the present invention, a step of pulling out a belt-like elastic base material from a roll rotatably supported by a roll stand installed on a portion of the manhole above the ground and inserting it into the manhole FIG. 図19に示す帯状の弾性基材を示す拡大斜視図。The expansion perspective view which shows the strip | belt-shaped elastic base material shown in FIG. 帯状の弾性基材を加熱手段により加熱した後、加熱した帯状の弾性基材を成形機によって幅方向に湾曲して湾曲方向の両端部が開いた略C字形状の弾性基材を形成する工程を示す説明図。The step of heating the belt-shaped elastic base material by the heating means and then bending the heated belt-shaped elastic base material in the width direction by a molding machine to form a substantially C-shaped elastic base material having both ends in the bending direction opened. FIG. 湾曲方向の端部が閉じて上下、すなわち径方向に重なり合った状態の弾性基材を形成する帯状の弾性基材を示す斜視図。The perspective view which shows the strip | belt-shaped elastic base material which forms the elastic base material of the state which the edge part of the bending direction closed and it overlapped up and down, ie, radial direction. 帯状の弾性基材を加熱手段により加熱した後、加熱した帯状の弾性基材を成形機によって幅方向に湾曲して湾曲方向の端部が閉じて上下、すなわち径方向に重なり合った弾性基材を形成する工程を示す説明図。After heating the belt-like elastic base material with the heating means, the heated belt-like elastic base material is bent in the width direction by a molding machine, the end in the bending direction is closed, and the elastic base material overlapping in the vertical direction, that is, in the radial direction, is formed. Explanatory drawing which shows the process to form.
符号の説明Explanation of symbols
1 管状補修材
2,2a,2b 弾性基材
3,3a,4,4a 端部
5 結合手段
6,7 係止突起
8 突起
9,9a,10,10a リブ
11 突起
12 係合突条
13 係合溝
14,40 地面
15,41 ケーブル
16,42 地中埋設管
17a,17b,43a,43b マンホール
18 牽引用ロープ
19 固定手段
20 管状ガイド体
20a 本体部
20b 円錐部
21,22 分割部材
23,24 分割面
25 結合手段
26 接続手段
27 嵌合溝部
28 突条部
29 環状突条
30 接続手段
31 環状嵌合溝
32 紐通し穴
33 牽引用紐
44 ロールスタンド
45 ロール
46 加熱手段
47,48 成形機
DESCRIPTION OF SYMBOLS 1 Tubular repair material 2,2a, 2b Elastic base material 3,3a, 4,4a End part 5 Coupling means 6,7 Locking protrusion 8 Projection 9,9a, 10,10a Rib 11 Protrusion 12 Engagement protrusion 13 Engagement Groove 14, 40 Ground 15, 41 Cable 16, 42 Underground pipe 17a, 17b, 43a, 43b Manhole 18 Pulling rope 19 Fixing means 20 Tubular guide body 20a Main body 20b Conical part 21, 22 Dividing member 23, 24 Dividing Surface 25 Coupling means 26 Connection means 27 Fitting groove part 28 Projection part 29 Annular protrusion 30 Connection means 31 Annular fitting groove 32 String passage hole 33 Pulling string 44 Roll stand 45 Roll 46 Heating means 47, 48 Molding machine

Claims (7)

  1. 管状補修材を用いて地中埋設管を補修する地中埋設管補修方法であって、
    前記管状補修材は、円周方向に湾曲した長尺の弾性基材で構成され、この弾性基材は、湾曲方向の端部同士を結合して管状補修材を形成する結合手段を備えた構造になっており、
    前記弾性基材の湾曲方向の端部同士を、先端側から前記結合手段によって結合して管状補修材を順次形成し、この管状補修材の先端側を、前記地中埋設管内へ一方の開口部から挿入した後、後端側へ向かって前記管状補修材を順次形成しながら、この管状補修材を前記地中埋設管の他方の開口部側へ移動させ、前記管状補修材を前記地中埋設管の一方の開口部から他方の開口部に亘って配置する
    ことを特徴とする地中埋設管補修方法。
    An underground pipe repair method for repairing underground pipes using a tubular repair material,
    The tubular repair material is composed of a long elastic base material curved in the circumferential direction, and the elastic base material is provided with a coupling means for joining the end portions in the curving direction to form a tubular repair material. And
    End portions of the elastic base material in the bending direction are joined from the tip side by the joining means to form a tubular repair material in sequence, and the tip side of the tubular repair material is opened into the underground tube. The tubular repair material is moved toward the other opening side of the underground pipe while the tubular repair material is sequentially formed toward the rear end side, and the tubular repair material is embedded in the underground. An underground buried pipe repairing method comprising disposing the pipe from one opening to the other opening.
  2. 管状補修材を用いて内部にケーブルが布設されている地中埋設管を補修する地中埋設管補修方法であって、
    前記管状補修材は、円周方向に湾曲した長尺の弾性基材で構成され、この弾性基材は、湾曲方向の端部同士を結合して管状補修材を形成する結合手段を備えた構造になっており、
    前記弾性基材の湾曲方向の両端部間から前記弾性基材の湾曲内部へ前記ケーブルを入れた後、前記弾性基材の湾曲方向の端部同士を、先端側から前記結合手段によって結合して管状補修材を順次形成し、この管状補修材の先端側を、前記地中埋設管内へ一方の開口部から挿入した後、後端側へ向かって内部にケーブルを通した状態の前記管状補修材を順次形成しながら、この管状補修材を前記地中埋設管の他方の開口部側へ移動させ、内部にケーブルを通した状態で前記管状補修材を前記地中埋設管の一方の開口部から他方の開口部に亘って配置する
    ことを特徴とする地中埋設管補修方法。
    An underground underground pipe repair method for repairing underground underground pipes in which cables are installed using tubular repair materials,
    The tubular repair material is composed of a long elastic base material curved in the circumferential direction, and the elastic base material has a coupling means for joining the end portions in the curving direction to form a tubular repair material. And
    After inserting the cable from between both ends of the elastic base material in the bending direction into the inside of the elastic base material, the ends of the elastic base material in the bending direction are coupled to each other by the coupling means from the tip side. A tubular repair material is formed in order, and the distal end side of the tubular repair material is inserted into the underground buried pipe from one opening, and then the cable is passed through the inside toward the rear end side. The tubular repair material is moved to the other opening side of the underground tube, and the tubular repair material is removed from the one opening portion of the underground tube with a cable passing through the inside. An underground pipe repairing method characterized by being arranged over the other opening.
  3. 管状補修材を用いて地中埋設管を補修する地中埋設管補修方法であって、
    帯状の弾性基材を幅方向に湾曲した後、この弾性基材の湾曲方向の端部同士を先端側から結合手段によって結合して管状補修材を順次形成し、この管状補修材の先端側を、前記地中埋設管内へ一方の開口部から挿入した後、後端側へ向かって前記管状補修材を順次形成しながら、この管状補修材を前記地中埋設管の他方の開口部側へ移動させ、前記管状補修材を前記地中埋設管の一方の開口部から他方の開口部に亘って配置する
    ことを特徴とする地中埋設管補修方法。
    An underground pipe repair method for repairing underground pipes using a tubular repair material,
    After bending the belt-shaped elastic base material in the width direction, the ends of the elastic base material in the bending direction are joined together from the tip side by a coupling means to form a tubular repair material in order, and the tip side of the tubular repair material is After inserting from one opening into the underground pipe, the tubular repair material is moved to the other opening side of the underground pipe while sequentially forming the tubular repair material toward the rear end side. And arranging the tubular repair material from one opening to the other opening of the underground pipe.
  4. 管状補修材を用いて内部にケーブルが布設されている地中埋設管を補修する地中埋設管補修方法であって、
    帯状の弾性基材を幅方向に湾曲した後、この弾性基材の湾曲方向の両端部間から前記弾性基材の湾曲内部へ前記ケーブルを入れた後、前記弾性基材の湾曲方向の端部同士を、先端側から前記結合手段によって結合して管状補修材を順次形成し、この管状補修材の先端側を、前記地中埋設管内へ一方の開口部から挿入した後、後端側へ向かって内部にケーブルを通した状態の前記管状補修材を順次形成しながら、この管状補修材を前記地中埋設管の他方の開口部側へ移動させ、内部にケーブルを通した状態で前記管状補修材を前記地中埋設管の一方の開口部から他方の開口部に亘って配置する
    ことを特徴とする地中埋設管補修方法。
    An underground underground pipe repair method for repairing underground underground pipes in which cables are installed using tubular repair materials,
    After the band-shaped elastic base material is bent in the width direction, the cable is inserted into the inside of the elastic base material from between both ends of the elastic base material in the bending direction, and then the elastic base material ends in the bending direction. The tubular repair materials are sequentially formed from the leading end side by the coupling means, and the distal end side of the tubular repair material is inserted into the underground tube from one opening and then toward the rear end side. While forming the tubular repair material in a state where the cable is passed through the inside sequentially, the tubular repair material is moved to the other opening side of the underground tube, and the tubular repair is performed while the cable is passed through the inside. A material is disposed from one opening to the other opening of the underground pipe. A method for repairing an underground pipe.
  5. 前記管状補修材を構成する弾性基材の表面には、多数の突起が形成されている ことを特徴とする請求項1,2,3または4に記載の地中埋設管補修方法。   The underground pipe repairing method according to claim 1, 2, 3, or 4, wherein a plurality of protrusions are formed on a surface of the elastic base material constituting the tubular repair material.
  6. 前記管状補修材を構成する弾性基材の表面に形成された突起は、前記管状補修材の周方向および/または軸方向に形成されたリブである
    ことを特徴とする請求項5に記載の地中埋設管補修方法。
    6. The ground according to claim 5, wherein the protrusion formed on the surface of the elastic base material constituting the tubular repair material is a rib formed in a circumferential direction and / or an axial direction of the tubular repair material. Inside buried pipe repair method.
  7. 前記管状補修材を構成する弾性基材の湾曲方向の端部同士を前記結合手段によって結合する際に、前記結合する弾性基材の湾曲方向の端部にシーリング剤を塗布する
    ことを特徴とする請求項1,2,3,4,5または6に記載の地中埋設管補修方法。
    When the ends of the elastic base material constituting the tubular repair material are joined to each other by the joining means, a sealing agent is applied to the end of the elastic base material to be joined in the curved direction. The underground pipe repair method according to claim 1, 2, 3, 4, 5, or 6.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010024768A (en) * 2008-07-23 2010-02-04 Sanken:Kk Repairing apparatus for cable laying conduit
JP2012237360A (en) * 2011-05-11 2012-12-06 Hatano Seisakusho:Kk Implement for pipe traction and method of arranging new pipe in existing pipe by using the same

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JPS59140989A (en) * 1982-07-02 1984-08-13 Trio Engineering Ltd As Method of lining flow path
JPS63268832A (en) * 1987-04-27 1988-11-07 Teikoku Hume Pipe Concrete pipe and its production
JPH02129495A (en) * 1988-10-31 1990-05-17 Link Pipe Inc Sleeve, liner, device and method for repairing conduit
JPH04360925A (en) * 1991-06-06 1992-12-14 Japan Steel & Tube Constr Co Ltd Method of reconstruction of manhole
JP2005507331A (en) * 2001-10-31 2005-03-17 オウェンス コーニング コンポジッツ エスピーアールエル Piping reinforcement liner and manufacturing method thereof
JP2005288786A (en) * 2004-03-31 2005-10-20 Meeshikku:Kk Method for repairing protective pipe with cable placing finished

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JPS59140989A (en) * 1982-07-02 1984-08-13 Trio Engineering Ltd As Method of lining flow path
JPS63268832A (en) * 1987-04-27 1988-11-07 Teikoku Hume Pipe Concrete pipe and its production
JPH02129495A (en) * 1988-10-31 1990-05-17 Link Pipe Inc Sleeve, liner, device and method for repairing conduit
JPH04360925A (en) * 1991-06-06 1992-12-14 Japan Steel & Tube Constr Co Ltd Method of reconstruction of manhole
JP2005507331A (en) * 2001-10-31 2005-03-17 オウェンス コーニング コンポジッツ エスピーアールエル Piping reinforcement liner and manufacturing method thereof
JP2005288786A (en) * 2004-03-31 2005-10-20 Meeshikku:Kk Method for repairing protective pipe with cable placing finished

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010024768A (en) * 2008-07-23 2010-02-04 Sanken:Kk Repairing apparatus for cable laying conduit
JP2012237360A (en) * 2011-05-11 2012-12-06 Hatano Seisakusho:Kk Implement for pipe traction and method of arranging new pipe in existing pipe by using the same

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