JP2008073962A - Regeneration method of existing pipe - Google Patents

Regeneration method of existing pipe Download PDF

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JP2008073962A
JP2008073962A JP2006256200A JP2006256200A JP2008073962A JP 2008073962 A JP2008073962 A JP 2008073962A JP 2006256200 A JP2006256200 A JP 2006256200A JP 2006256200 A JP2006256200 A JP 2006256200A JP 2008073962 A JP2008073962 A JP 2008073962A
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peripheral side
thermoplastic resin
outer peripheral
pipe
inner peripheral
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Shingo Nakamura
伸吾 中村
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To regenerate an existing pipe without deteriorating laying workability while securing self-supporting strength of a regenerated pipe. <P>SOLUTION: The inner peripheral surface of the existing pipe K is lined with a thermoplastic resin pipe 2 of the outer peripheral side with a wall thickness of not less than 1/3 of the wall thickness which can secure self-supporting strength. Next, the inner peripheral surface of the earlier lined thermoplastic resin pipe 2 of the outer peripheral side, is lined with a thermoplastic resin pipe 3 of the inner peripheral side with sand (s) sticking to the outside. The thermoplastic resin pipe 3 of the inner peripheral side has a wall thickness of not less than 1/3 of the wall thickness for securing self-supporting strength and further, a potential wall thickness which comes up to be larger than a wall thickness for securing self-supporting strength by combining the original wall thickness of not less than 1/3 with the wall thickness of the thermoplastic resin pipe 2 of the outer peripheral side. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

この発明は、既設管の更生方法に関するものである。   The present invention relates to a method for rehabilitating existing pipes.

従来より、ヒューム管や鋼管等の老朽化した既設管を更生する工法として、既設管内に、塩化ビニル等の熱可塑性樹脂製の形状記憶温度において円筒形に形状回復性を有するＵ字状のパイプライナーを引き込み、加熱により円形に復元させた後、加圧して膨張させ、既設管の内面にライニングする方法が提案されている（例えば、特許文献１参照）。   Conventionally, as a method of rehabilitating aging existing pipes such as fume pipes and steel pipes, a U-shaped pipe having a shape-recoverability in a cylindrical shape at a shape memory temperature made of a thermoplastic resin such as vinyl chloride in the existing pipe There has been proposed a method in which a liner is drawn in and restored to a circular shape by heating, and then pressurized and expanded to line the inner surface of an existing pipe (see, for example, Patent Document 1).

また、既設管内にＵ字状に折り畳まれたプレライナを引き込んだ後、プレライナ内に、外周面に周方向に間隔をおいて管軸方向に延びる複数本の突起を設けたインライナをＵ字状に折り畳んで引き込み、次いで、加圧して内側のインライナをプレライナに、プレライナを既設管の内周面にそれぞれ圧着し、さらに、プレライナとインライナの突起によって形成される環状スペースにモルタルを充填して既設管の内面にライニングする方法が提案されている（例えば、特許文献２参照）。
特開２００１−２３２６８４号公報 特許第３５５８６３２号公報 In addition, after drawing the U-shaped preliner into the existing pipe, the inliner provided with a plurality of protrusions extending in the pipe axis direction at intervals in the circumferential direction on the outer peripheral surface is made U-shaped. Fold and pull in, then pressurize and press the inner inliner to the preliner, the preliner to the inner peripheral surface of the existing pipe, and then fill the annular space formed by the projections of the preliner and inliner with mortar and fill the existing pipe There has been proposed a method of lining the inner surface of the material (for example, see Patent Document 2).
JP 2001-232684 A Japanese Patent No. 3558632

ところで、前者のライニング方法においては、既設管の口径が一定以上に大きくなると、自立強度（埋設を想定して土圧に相当する荷重を作用させた場合に、断面変形が一定範囲内に納まるような強度）を確保するためには、肉厚を大きくせざるを得ず、重量が大きくなって既設管内への挿入が困難になる。このため、挿入を容易に行うため、高温での弾性率を低下させることが試みられているが、この場合には、常温でも弾性率が低下する傾向となる。したがって、常温での自立強度を確保するためには、肉厚を大きくする必要があり、重量が大きくなり、作業性を著しく低下させると共に、加熱や冷却に時間がかかり、施工が長時間化するものとなる。   By the way, in the former lining method, when the diameter of the existing pipe becomes larger than a certain level, the self-supporting strength (when the load corresponding to the earth pressure is applied under the assumption of burial, the cross-sectional deformation will fall within a certain range. In order to ensure a sufficient strength), the thickness must be increased, and the weight increases, making it difficult to insert into the existing pipe. For this reason, attempts have been made to reduce the elastic modulus at high temperatures in order to facilitate insertion, but in this case, the elastic modulus tends to decrease even at room temperature. Therefore, in order to ensure the self-supporting strength at room temperature, it is necessary to increase the wall thickness, which increases the weight, significantly lowers workability, and takes time for heating and cooling, resulting in longer construction time. It will be a thing.

また、後者のライニング方法においては、プレライナに対するインライナの滑りを防止するため、プレライナとインライナの突起によって形成される環状スペースにモルタルを充填しなければならず、作業が煩雑になると共に、モルタルの充填に際して座屈しないような大きな肉厚に形成しなければならず、前述したように、既設管内への挿入が困難になるものである。   In the latter lining method, in order to prevent slippage of the inliner with respect to the pre-liner, the annular space formed by the protrusions of the pre-liner and the in-liner must be filled with mortar. At this time, it must be formed with a large thickness so as not to buckle, and as described above, it becomes difficult to insert it into an existing pipe.

本発明は、このような問題点に鑑みてなされたもので、更生管の自立強度を確保しつつ施工性を低下させることなく既設管を更正することのできる既設管の更生方法を提供するものである。   The present invention has been made in view of such problems, and provides an existing pipe rehabilitation method capable of correcting an existing pipe without reducing workability while ensuring the self-supporting strength of the rehabilitation pipe. It is.

本発明は、自立強度を確保する肉厚の１／３以上の肉厚を有する外周側熱可塑性樹脂管を既設管内に挿入し、該外周側熱可塑性樹脂管を加熱および加圧することによって復元膨張させて既設管の内周面にライニングした後、該外周側熱可塑性樹脂管内に、自立強度を確保する肉厚の１／３以上の肉厚であって、外周側熱可塑性樹脂管の肉厚と合わせて自立強度を確保する肉厚以上となる肉厚を有する外面砂付き内周側熱可塑性樹脂管を挿入し、該内周側熱可塑性樹脂管を加熱および加圧することによって復元膨張させて外周側熱可塑性樹脂管の内周面にライニングすることを特徴とするものである。   In the present invention, an outer peripheral side thermoplastic resin pipe having a thickness of 1/3 or more of the thickness to ensure self-supporting strength is inserted into an existing pipe, and the outer peripheral side thermoplastic resin pipe is heated and pressurized to restore and expand. After the lining on the inner peripheral surface of the existing pipe, the outer side thermoplastic resin pipe has a thickness of 1/3 or more of the thickness to ensure self-standing strength, and the outer side thermoplastic resin pipe is thicker The inner peripheral side thermoplastic resin tube with outer surface sand having a thickness that is equal to or greater than the thickness to ensure the self-supporting strength is inserted, and the inner peripheral side thermoplastic resin tube is heated and pressurized to be restored and expanded. It is characterized by lining the inner peripheral surface of the outer peripheral side thermoplastic resin tube.

本発明によれば、既設管の内周面に、自立強度を確保する肉厚の１／３以上の肉厚を有する外周側熱可塑性樹脂管をライニングする。次いで、ライニングされた外周側熱可塑性樹脂管の内周面に、自立強度を確保する肉厚の１／３以上の肉厚であって、外周側熱可塑性樹脂管の肉厚と合わせて自立強度を確保する肉厚以上となる肉厚を有する外面砂付き内周側熱可塑性樹脂管をライニングする。   According to the present invention, the outer peripheral side thermoplastic resin pipe having a thickness of 1/3 or more of the thickness ensuring the self-standing strength is lined on the inner peripheral surface of the existing pipe. Next, the inner peripheral surface of the outer peripheral side thermoplastic resin pipe that is lined has a thickness that is 1/3 or more of the wall thickness that secures the self-supporting strength, and the self-supporting strength together with the thickness of the outer peripheral side thermoplastic resin pipe The inner peripheral side thermoplastic resin pipe with the outer surface sand having a wall thickness equal to or larger than the wall thickness for securing the lining is lined.

この結果、積層された外周側熱可塑性樹脂管および内周側熱可塑性樹脂管からなる更生管は、自立強度を確保することができると共に、外周側熱可塑性樹脂管および内周側熱可塑性樹脂管の各肉厚は、自立強度を確保する肉厚よりも薄肉であるため、重量が大きくなることがなく、また、加熱や冷却に長時間を必要としないことから、施工性を低下させることがない。また、外周側熱可塑性樹脂管に対する内周側熱可塑性樹脂管の滑りは、その外面に付着された砂の摩擦抵抗によって防止することができる。   As a result, the rehabilitation pipe comprising the laminated outer peripheral side thermoplastic resin pipe and inner peripheral side thermoplastic resin pipe can ensure self-standing strength, and the outer peripheral side thermoplastic resin pipe and inner peripheral side thermoplastic resin pipe. Each wall thickness is thinner than the wall thickness that secures the self-supporting strength, so the weight does not increase, and it does not require a long time for heating and cooling. Absent. In addition, the slip of the inner peripheral side thermoplastic resin tube with respect to the outer peripheral side thermoplastic resin tube can be prevented by the frictional resistance of the sand adhered to the outer surface.

本発明において、熱可塑性樹脂管としては、塩化ビニル系樹脂を好適に用いることができる。特に、砂を付着するためには、塩化ビニル系樹脂を採用することが好ましい。   In the present invention, a vinyl chloride resin can be suitably used as the thermoplastic resin tube. In particular, in order to adhere sand, it is preferable to employ a vinyl chloride resin.

本発明において、内周側熱可塑性樹脂管の外周面に付着された砂としては、粒径が１０〜８０メッシュ（９０％パス）程度が好ましい。砂の粒径が１０メッシュ未満であると、外周側熱可塑性樹脂管に対する内周側熱可塑性樹脂管の滑りを抑制することができず、８０メッシュを超えると、ライニング後の凹凸が大きくなる。また、１平方メートル当たりの砂の付着量は、０．５〜５ｋｇが好ましい。１平方メートル当たりの砂の付着量が０．５ｋｇ未満であると、内周側熱可塑性樹脂管の滑りを防止することができず、５ｋｇを超えると、ライニング後の凹凸が大きくなる。   In the present invention, the sand adhered to the outer peripheral surface of the inner peripheral side thermoplastic resin tube preferably has a particle size of about 10 to 80 mesh (90% pass). If the particle size of the sand is less than 10 mesh, slippage of the inner peripheral side thermoplastic resin tube relative to the outer peripheral side thermoplastic resin tube cannot be suppressed, and if it exceeds 80 mesh, the unevenness after lining increases. Moreover, 0.5-5 kg is preferable for the adhesion amount of sand per square meter. If the amount of sand adhered per square meter is less than 0.5 kg, slippage of the inner peripheral side thermoplastic resin tube cannot be prevented, and if it exceeds 5 kg, unevenness after lining becomes large.

本発明は、自立強度を確保する肉厚の１／３以上の肉厚を有し、内周面に周方向に間隔をおいて管軸方向に延びる複数本のリブを設けた外周側熱可塑性樹脂管を既設管内に挿入し、該外周側熱可塑性樹脂管を加熱および加圧することによって復元膨張させて既設管の内周面にライニングした後、該外周側熱可塑性樹脂管内に、自立強度を確保する肉厚の１／３以上の肉厚であって、外周側熱可塑性樹脂管の肉厚と合わせて自立強度を確保する肉厚以上となる肉厚を有する内周側熱可塑性樹脂管を挿入し、該内周側熱可塑性樹脂管を加熱および加圧することによって復元膨張させて外周側熱可塑性樹脂管の内周面にライニングすることを特徴とするものである。   The present invention has an outer peripheral side thermoplasticity that has a thickness of 1/3 or more of the thickness that secures self-supporting strength, and is provided with a plurality of ribs extending in the tube axis direction at intervals in the circumferential direction on the inner peripheral surface. The resin tube is inserted into the existing tube, and the outer peripheral side thermoplastic resin tube is restored and expanded by heating and pressurizing to line the inner peripheral surface of the existing tube, and then the self-standing strength is given to the outer peripheral side thermoplastic resin tube. An inner peripheral side thermoplastic resin pipe having a thickness of 1/3 or more of the wall thickness to be secured and having a thickness that is equal to or greater than the wall thickness to ensure self-supporting strength together with the thickness of the outer peripheral side thermoplastic resin pipe The inner peripheral side thermoplastic resin tube is inserted and restored and expanded by heating and pressurizing and lining the inner peripheral surface of the outer peripheral side thermoplastic resin tube.

本発明によれば、既設管の内周面に、自立強度を確保する肉厚の１／３以上の肉厚を有し、内周面に周方向に間隔をおいて管軸方向に延びる複数本のリブを設けた外周側熱可塑性樹脂管をライニングする。次いで、ライニングされた外周側熱可塑性樹脂管の内周面に、自立強度を確保する肉厚の１／３以上の肉厚であって、外周側熱可塑性樹脂管の肉厚と合わせて自立強度を確保する肉厚以上となる肉厚を有する内周側熱可塑性樹脂管をライニングする。   According to the present invention, the inner peripheral surface of the existing pipe has a thickness of 1/3 or more of the thickness that secures the self-supporting strength, and a plurality of pipes extending in the pipe axis direction are spaced from the inner peripheral surface in the circumferential direction. The outer peripheral side thermoplastic resin pipe provided with the ribs is lined. Next, the inner peripheral surface of the outer peripheral side thermoplastic resin pipe that is lined has a thickness that is 1/3 or more of the wall thickness that secures the self-supporting strength, and the self-supporting strength together with the thickness of the outer peripheral side thermoplastic resin pipe The inner peripheral side thermoplastic resin pipe having a thickness that is equal to or greater than the thickness for securing the lining is lined.

この結果、積層された外周側熱可塑性樹脂管および内周側熱可塑性樹脂管からなる更生管は、自立強度を確保することができると共に、外周側熱可塑性樹脂管および内周側熱可塑性樹脂管の各肉厚は、自立強度を確保する肉厚よりも薄肉であるため、重量が大きくなることがなく、また、加熱や冷却に長時間を必要としないことから、施工性を低下させることがない。また、外周側熱可塑性樹脂管に対する内周側熱可塑性樹脂管の滑りは、リブがアンカーとして作用することによって防止することができる。   As a result, the rehabilitation pipe comprising the laminated outer peripheral side thermoplastic resin pipe and inner peripheral side thermoplastic resin pipe can ensure self-standing strength, and the outer peripheral side thermoplastic resin pipe and inner peripheral side thermoplastic resin pipe. Each wall thickness is thinner than the wall thickness that secures the self-supporting strength, so the weight does not increase, and it does not require a long time for heating and cooling. Absent. Moreover, the slip of the inner peripheral side thermoplastic resin pipe with respect to the outer peripheral side thermoplastic resin pipe can be prevented by the ribs acting as anchors.

本発明において、熱可塑性樹脂管としては、塩化ビニル系樹脂を好適に用いることができる。   In the present invention, a vinyl chloride resin can be suitably used as the thermoplastic resin tube.

本発明において、外周側熱可塑性樹脂管の内周面に形成されるリブとしては、口径によっても異なるが、幅２〜２０ｍｍ、高さ２〜１０ｍｍ、ピッチ４〜８０ｍｍ程度が好ましい。リブの幅が２ｍｍ未満で、かつ、高さが２ｍｍ未満であると、外周側熱可塑性樹脂管に対する内周側熱可塑性樹脂管の滑りを抑制することができず、リブの幅が２０ｍｍを超え、かつ、高さが１０ｍｍを超えると、ライニング後の凹凸が大きくなる。また、リブのピッチが４ｍｍ未満であると、内周側熱可塑性樹脂管が入り込みにくくなり、外周側熱可塑性樹脂管に対する内周側熱可塑性樹脂管の滑りが発生しやすくなり、８０ｍｍを超えると、リブ間において、外周側熱可塑性樹脂管に対する内周側熱可塑性樹脂管の滑りが発生しやすくなる。   In the present invention, the rib formed on the inner peripheral surface of the outer peripheral side thermoplastic resin tube is preferably about 2 to 20 mm in width, 2 to 10 mm in height, and about 4 to 80 mm in pitch, although it varies depending on the diameter. If the rib width is less than 2 mm and the height is less than 2 mm, slippage of the inner peripheral side thermoplastic resin tube relative to the outer peripheral side thermoplastic resin tube cannot be suppressed, and the rib width exceeds 20 mm. When the height exceeds 10 mm, the unevenness after lining becomes large. Further, if the rib pitch is less than 4 mm, the inner peripheral side thermoplastic resin tube is difficult to enter, and slippage of the inner peripheral side thermoplastic resin tube with respect to the outer peripheral side thermoplastic resin tube is likely to occur. Further, slippage of the inner peripheral side thermoplastic resin tube with respect to the outer peripheral side thermoplastic resin tube is likely to occur between the ribs.

本発明は、自立強度を確保する肉厚未満の肉厚を有する外周側熱可塑性樹脂管を既設管内に挿入し、該外周側熱可塑性樹脂管を加熱および加圧することによって復元膨張させて既設管の内周面にライニングした後、該外周側熱可塑性樹脂管の内周面に金属管を配置し、次いで、金属管内に、自立強度を確保する肉厚未満の肉厚であって、外周側熱可塑性樹脂管の肉厚および金属管の肉厚と合わせて自立強度を確保する肉厚以上となる肉厚を有する内周側熱可塑性樹脂管を挿入し、該内周側熱可塑性樹脂管を加熱および加圧することによって復元膨張させて金属管の内周面にライニングすることを特徴とするものである。   The present invention inserts an outer peripheral side thermoplastic resin pipe having a thickness less than the thickness to ensure self-standing strength into an existing pipe, and heats and pressurizes the outer peripheral side thermoplastic resin pipe to restore and expand the existing pipe. After the lining on the inner peripheral surface, the metal tube is disposed on the inner peripheral surface of the outer peripheral side thermoplastic resin tube, and then in the metal tube, the wall thickness is less than the thickness to ensure self-supporting strength, and the outer peripheral side Insert the inner side thermoplastic resin tube with a thickness that is equal to or greater than the thickness to ensure the self-supporting strength in combination with the thickness of the thermoplastic resin tube and the thickness of the metal tube, and insert the inner side thermoplastic resin tube It is characterized by being restored and expanded by heating and pressurizing and lining the inner peripheral surface of the metal tube.

本発明によれば、既設管の内周面に、自立強度を確保する肉厚の１／３以上の肉厚を有する外周側熱可塑性樹脂管をライニングする。次いで、ライニングされた外周側熱可塑性樹脂管の内周面に金属管を配置する。さらに、金属管の内周面に、自立強度を確保する肉厚未満の肉厚であって、外周側熱可塑性樹脂管の肉厚および金属管の肉厚と合わせて自立強度を確保する肉厚以上となる肉厚を有する内周側熱可塑性樹脂管をライニングする。   According to the present invention, the outer peripheral side thermoplastic resin pipe having a thickness of 1/3 or more of the thickness ensuring the self-standing strength is lined on the inner peripheral surface of the existing pipe. Next, a metal tube is disposed on the inner peripheral surface of the outer peripheral side thermoplastic resin tube that is lined. Furthermore, on the inner peripheral surface of the metal tube, the wall thickness is less than the wall thickness that secures the self-supporting strength, and the wall thickness that secures the self-supporting strength together with the wall thickness of the outer peripheral side thermoplastic resin tube and the metal tube. The inner peripheral side thermoplastic resin pipe having the above thickness is lined.

この結果、積層された外周側熱可塑性樹脂管、金属管および内周側熱可塑性樹脂管からなる更生管は、自立強度を確保することができると共に、外周側熱可塑性樹脂管および内周側熱可塑性樹脂管の各肉厚は、自立強度を確保する肉厚よりも薄肉であるため、重量が大きくなることがなく、また、加熱や冷却に長時間を必要としないことから、施工性を低下させることがない。   As a result, the rehabilitation pipe composed of the laminated outer peripheral side thermoplastic resin pipe, metal pipe and inner peripheral side thermoplastic resin pipe can secure self-supporting strength, and the outer peripheral side thermoplastic resin pipe and inner peripheral side heat can be secured. Each wall thickness of the plastic resin pipe is thinner than the wall thickness that secures self-supporting strength, so the weight does not increase and heating and cooling do not require a long time. I will not let you.

本発明において、熱可塑性樹脂管としては、塩化ビニル系樹脂を好適に用いることができる。   In the present invention, a vinyl chloride resin can be suitably used as the thermoplastic resin tube.

本発明において、金属管としては、金属板を螺旋状に巻回して製管されたものであってもよいし、短管状金属管を順に挿入して形成されたものであってもよい。この場合、金属管の端縁が周方向に重なっていることが好ましいが、端縁同士が管軸方向に突き合わされたものであっても構わない。   In the present invention, the metal tube may be formed by spirally winding a metal plate, or may be formed by sequentially inserting short tubular metal tubes. In this case, it is preferable that the end edges of the metal tube overlap in the circumferential direction, but the end edges may be abutted in the tube axis direction.

本発明において、金属管の外周面および内周面にそれぞれ接着剤が塗布されていることが好ましい。これにより、金属管の外周面および内周面をそれぞれ外周側熱可塑性樹脂管および内周側熱可塑性樹脂管に接着することができる。接着剤としては、内周側熱可塑性樹脂管を加熱することを利用して、ホットメルト接着剤を好適に用いることができる。   In this invention, it is preferable that the adhesive agent is apply | coated to the outer peripheral surface and inner peripheral surface of a metal pipe, respectively. Thereby, the outer peripheral surface and inner peripheral surface of a metal tube can be adhere | attached on an outer peripheral side thermoplastic resin tube and an inner peripheral side thermoplastic resin tube, respectively. As the adhesive, a hot melt adhesive can be suitably used by utilizing heating of the inner peripheral side thermoplastic resin tube.

本発明において、金属管の厚みとしては、その弾性率と共に外周側熱可塑性樹脂管および内周側熱可塑性樹脂管の各肉厚を考慮して更生管全体として自立強度を発現できるように設定すればよい。   In the present invention, the thickness of the metal tube is set so that the entire rehabilitated tube can exhibit self-supporting strength in consideration of the thickness of the outer peripheral side thermoplastic resin tube and the inner peripheral side thermoplastic resin tube together with its elastic modulus. That's fine.

本発明は、自立強度を確保する肉厚の１／３以上の肉厚を有する外周側熱可塑性樹脂管を既設管内に挿入し、該外周側熱可塑性樹脂管を加熱および加圧することによって復元膨張させて既設管の内周面にライニングした後、該外周側熱可塑性樹脂管の内周面に、外周側熱可塑性樹脂管の肉厚と合わせて自立強度を確保する肉厚以上となる肉厚を有する熱可塑性樹脂製のリブ付き帯状体を螺旋状に巻回して製管された内周側熱可塑性樹脂管をライニングすることを特徴とするものである。   In the present invention, an outer peripheral side thermoplastic resin pipe having a thickness of 1/3 or more of the thickness to ensure self-supporting strength is inserted into an existing pipe, and the outer peripheral side thermoplastic resin pipe is heated and pressurized to restore and expand. After being lined to the inner peripheral surface of the existing pipe, the thickness of the inner peripheral surface of the outer peripheral side thermoplastic resin tube is equal to or greater than the thickness to ensure self-supporting strength together with the thickness of the outer peripheral side thermoplastic resin tube It is characterized by lining an inner peripheral side thermoplastic resin tube formed by spirally winding a ribbed strip made of thermoplastic resin having a pipe.

本発明によれば、既設管内に自立強度を確保する肉厚の１／３以上の肉厚を有する外周側熱可塑性樹脂管を挿入し、該外周側熱可塑性樹脂管を加熱および加圧することによって復元膨張させて既設管の内周面にライニングする。次いで、ライニングされた外周側熱可塑性樹脂管の内周面に、外周側熱可塑性樹脂管の肉厚と合わせて自立強度を確保する肉厚以上となる肉厚を有する熱可塑性樹脂製のリブ付き帯状体を螺旋状に巻回して製管された内周側熱可塑性樹脂管をライニングする。   According to the present invention, by inserting an outer peripheral side thermoplastic resin pipe having a thickness of 1/3 or more of the thickness to ensure self-supporting strength in an existing pipe, and heating and pressurizing the outer peripheral side thermoplastic resin pipe It is restored and expanded to line the inner circumference of the existing pipe. Next, a rib made of a thermoplastic resin having a thickness that is equal to or greater than a thickness that secures a self-supporting strength together with the thickness of the outer peripheral side thermoplastic resin tube on the inner peripheral surface of the outer peripheral side thermoplastic resin tube that is lined The inner peripheral side thermoplastic resin pipe formed by spirally winding the belt-like body is lined.

この結果、積層された外周側熱可塑性樹脂管および内周側熱可塑性樹脂管からなる更生管は、自立強度を確保することができると共に、外周側熱可塑性樹脂管の肉厚は、自立強度を確保する肉厚よりも薄肉であるため、重量が大きくなることがなく、加熱や冷却に長時間を必要としないことから、施工性を低下させることがない。また、内周側熱可塑性樹脂管は、熱可塑性樹脂製のリブ付き帯状体を螺旋状に巻回して製管するため、加熱や冷却が不要であり、短時間に施工することができる。さらに、外周側熱可塑性樹脂管に対する内周側熱可塑性樹脂管の滑りは、内周側熱可塑性樹脂管を構成するリブ付き帯状体のリブが外周側熱可塑性樹脂管の内周面に螺旋状に接触することによる摩擦抵抗によって防止することができる。しかも、積層された外周側熱可塑性樹脂管および内周側熱可塑性樹脂管からなる更生管は、自立強度を確保できることから、熱可塑性樹脂製のリブ付き帯状体を螺旋状に巻回して製管された内周側熱可塑性樹脂管単独では自立強度を確保するために必要な裏込め材填が不要となる。   As a result, the rehabilitation pipe composed of the laminated outer peripheral side thermoplastic resin pipe and inner peripheral side thermoplastic resin pipe can secure the self-supporting strength, and the thickness of the outer peripheral side thermoplastic resin pipe has the self-supporting strength. Since it is thinner than the wall thickness to be secured, the weight does not increase, and a long time is not required for heating and cooling, so that workability is not lowered. Moreover, since the inner peripheral side thermoplastic resin pipe is formed by winding a ribbon-like body made of a thermoplastic resin in a spiral shape, heating and cooling are unnecessary, and it can be applied in a short time. Furthermore, the slip of the inner peripheral side thermoplastic resin tube with respect to the outer peripheral side thermoplastic resin tube is such that the ribs of the ribbed member constituting the inner peripheral side thermoplastic resin tube spiral on the inner peripheral surface of the outer peripheral side thermoplastic resin tube. It can be prevented by the frictional resistance caused by contact. Moreover, since the rehabilitating pipe composed of the laminated outer peripheral side thermoplastic resin pipes and inner peripheral side thermoplastic resin pipes can ensure the self-supporting strength, the ribbed strip made of thermoplastic resin is spirally wound to form a pipe. The inner peripheral side thermoplastic resin tube alone does not require filling of the backfilling material necessary for ensuring the self-supporting strength.

本発明において、熱可塑性樹脂管としては、塩化ビニル系樹脂を好適に用いることができる。   In the present invention, a vinyl chloride resin can be suitably used as the thermoplastic resin tube.

本発明において、前記外周側熱可塑性樹脂管および内周側熱可塑性樹脂管に代えて、熱または光によって硬化する樹脂が含浸された繊維を有する外周側ライニング材および内周側ライニング材を挿入し、または、反転挿入し、外周側ライニング材および内周側ライニング材を加圧することによって復元膨張させた後、熱または光によって樹脂を硬化させてライニングするようにしてもよい。   In the present invention, instead of the outer peripheral side thermoplastic resin tube and the inner peripheral side thermoplastic resin tube, an outer peripheral side lining material and an inner peripheral side lining material having fibers impregnated with resin that is cured by heat or light are inserted. Alternatively, it may be reversely inserted and restored and expanded by pressurizing the outer circumferential side lining material and the inner circumferential side lining material, and then the resin may be cured by heat or light for lining.

ここで、外周側ライニング材および内周側ライニング材としては、ポリエステル、ナイロン、ポリプロピレン、アクリルなどの繊維からなる織布または不織布に、ポリエステル樹脂、エポキシ樹脂、ビニールエステル樹脂などの熱硬化性樹脂、あるいは、不飽和ポリエステル樹脂などの光硬化性樹脂を含浸させ、その表裏両面をポリウレタンやポリエチレンなどのプラスチックフィルムで被覆したものを挙げることができる。   Here, as the outer peripheral side lining material and the inner peripheral side lining material, a thermosetting resin such as polyester resin, epoxy resin, vinyl ester resin, woven fabric or non-woven fabric made of fibers of polyester, nylon, polypropylene, acrylic, etc., Or what impregnated photocurable resins, such as unsaturated polyester resin, and coat | covered the front and back both surfaces with plastic films, such as a polyurethane and polyethylene, can be mentioned.

外周側ライニング材および内周側ライニング材は、既設管内および外周側樹脂管内などにそれぞれ挿入し、あるいは、反転挿入し、外周側ライニング材および内周側ライニング材をそれぞれ加圧して復元膨張させ、既設管や外周側樹脂管などに密着させた後、熱硬化性樹脂の場合は加熱して樹脂を硬化させ、また、光硬化性樹脂の場合は光を照射して樹脂を硬化させればよい。   The outer peripheral side lining material and the inner peripheral side lining material are inserted into the existing pipe and the outer peripheral side resin pipe, respectively, or reversely inserted, and the outer peripheral side lining material and the inner peripheral side lining material are respectively pressurized and restored and expanded. After being in close contact with the existing pipe or the outer peripheral side resin pipe, in the case of a thermosetting resin, the resin is heated to cure the resin, and in the case of a photocurable resin, the resin is cured by irradiating light. .

本発明において、前記外周側熱可塑性樹脂管に代えて、熱または光によって硬化する樹脂が含浸された繊維を有する外周側ライニング材を挿入し、または、反転挿入し、外周側ライニング材を加圧することによって復元膨張させた後、熱または光によって樹脂を硬化させてライニングするようにしてもよい。   In this invention, it replaces with the said outer peripheral side thermoplastic resin pipe | tube, inserts the outer peripheral side lining material which has the fiber impregnated with the resin hardened | cured with a heat | fever or light, or reversely inserts and pressurizes an outer peripheral side lining material. After the resin is restored and expanded, the resin may be cured by heat or light to be lined.

ここで、外周側ライニング材および内周側ライニング材としては、ポリエステル、ナイロン、ポリプロピレン、アクリルなどの繊維からなる織布または不織布に、ポリエステル樹脂、エポキシ樹脂、ビニールエステル樹脂などの熱硬化性樹脂、あるいは、不飽和ポリエステル樹脂などの光硬化性樹脂を含浸させ、その表裏両面をポリウレタンやポリエチレンなどのプラスチックフィルムで被覆したものを挙げることができる。   Here, as the outer peripheral side lining material and the inner peripheral side lining material, a thermosetting resin such as polyester resin, epoxy resin, vinyl ester resin, woven fabric or non-woven fabric made of fibers of polyester, nylon, polypropylene, acrylic, etc., Or what impregnated photocurable resins, such as unsaturated polyester resin, and coat | covered the front and back both surfaces with plastic films, such as a polyurethane and polyethylene, can be mentioned.

外周側ライニング材は、既設管内に挿入し、あるいは、反転挿入し、外周側ライニング材を加圧して復元膨張させ、既設管に密着させた後、熱硬化性樹脂の場合は加熱して樹脂を硬化させ、また、光硬化性樹脂の場合は光を照射して樹脂を硬化させればよい。   The outer peripheral lining material is inserted into the existing pipe, or inserted reversely, and the outer peripheral lining material is pressurized and restored to expand and brought into close contact with the existing pipe. In the case of a photocurable resin, the resin may be cured by irradiation with light.

本発明によれば、更生管の自立強度を確保しつつ施工性を低下させることなく既設管を更正することができる。   ADVANTAGE OF THE INVENTION According to this invention, an existing pipe can be corrected, without reducing workability, ensuring the self-supporting intensity | strength of a renovated pipe.

以下、本発明の実施の形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１には、本発明の既設管の更生方法の第１実施形態が示されている。   FIG. 1 shows a first embodiment of the existing pipe rehabilitation method of the present invention.

この更生方法によって得られた更生管１は、既設管Ｋの内周面にライニングされた外周側熱可塑性樹脂管２と、外周側熱可塑性樹脂管２の内周面にライニングされた内周側熱可塑性樹脂管３と、から構成されている。   The rehabilitation pipe 1 obtained by this rehabilitation method includes an outer peripheral side thermoplastic resin pipe 2 lined on the inner peripheral surface of the existing pipe K and an inner peripheral side lined on the inner peripheral surface of the outer peripheral side thermoplastic resin pipe 2. And a thermoplastic resin tube 3.

そして、外周側熱可塑性樹脂管２の肉厚および内周側熱可塑性樹脂管３の肉厚は、それぞれ自立強度を確保する肉厚の１／３以上に設定されており、かつ、外周側熱可塑性樹脂管２の肉厚および内周側熱可塑性樹脂管３の肉厚の和は、自立強度を確保することができる肉厚以上となるように設定されている。   The wall thickness of the outer peripheral side thermoplastic resin tube 2 and the wall thickness of the inner peripheral side thermoplastic resin tube 3 are each set to 1/3 or more of the wall thickness ensuring the self-supporting strength, and the outer peripheral side heat The sum of the thickness of the plastic resin tube 2 and the thickness of the inner peripheral side thermoplastic resin tube 3 is set to be equal to or greater than the thickness capable of ensuring the self-supporting strength.

この場合、内周側熱可塑性樹脂管３は、その外周面に砂ｓが付着されている。すなわち、内周側熱可塑性樹脂管３の製造の際、その外周面に接着剤を介して砂ｓを吹き付けて付着させている。   In this case, the inner peripheral side thermoplastic resin tube 3 has sand s attached to the outer peripheral surface thereof. That is, when the inner peripheral side thermoplastic resin tube 3 is manufactured, sand s is sprayed and adhered to the outer peripheral surface thereof via an adhesive.

このような更生管１は、次のように施工される。   Such a rehabilitation pipe 1 is constructed as follows.

まず、Ｕ字状に折り畳まれた外周側熱可塑性樹脂管２を既設管Ｋ内に引き込んだ後、両端を密閉して内部に加熱蒸気を供給し、外周側熱可塑性樹脂管２を形状記憶効果によって円形に復元させる。次いで、外周側熱可塑性樹脂管２の内部に圧縮空気を供給し、外周側熱可塑性樹脂管２を膨張させ、既設管Ｋの内周面に密着させる。この際、可撓性を有する外周側熱可塑性樹脂管２は、圧縮空気の供給によって冷却し、既設管Ｋの内周面に密着した状態で固化する。   First, after the outer peripheral side thermoplastic resin tube 2 folded in a U-shape is drawn into the existing tube K, both ends are sealed and heated steam is supplied to the inside, so that the outer side thermoplastic resin tube 2 has a shape memory effect. To restore a circle. Next, compressed air is supplied to the inside of the outer peripheral side thermoplastic resin tube 2, the outer peripheral side thermoplastic resin tube 2 is expanded and brought into close contact with the inner peripheral surface of the existing tube K. At this time, the outer peripheral side thermoplastic resin pipe 2 having flexibility is cooled by supplying compressed air and solidified while being in close contact with the inner peripheral surface of the existing pipe K.

外周側熱可塑性樹脂管２のライニングが終了したならば、Ｕ字状に折り畳まれた内周側熱可塑性樹脂管３を外周側熱可塑性樹脂管２の内部に引き込んだ後、両端を密閉して内部に加熱蒸気を供給し、内周側熱可塑性樹脂管３を形状記憶効果によって円形に復元させる。次いで、内周側熱可塑性樹脂管３の内部に圧縮空気を供給し、内周側熱可塑性樹脂管３を膨張させ、外周側熱可塑性樹脂管２の内周面に密着させる。この際、可撓性を有する内周側熱可塑性樹脂管３は、圧縮空気の供給によって冷却し、外周側熱可塑性樹脂管２の内周面に密着して固化する。また、内周側熱可塑性樹脂管３の外周面には、砂ｓが付着されていることにより、砂ｓの摩擦抵抗によって外周側熱可塑性樹脂管２に対する内周側熱可塑性樹脂管３の滑りが防止される。   When the lining of the outer peripheral side thermoplastic resin tube 2 is finished, the inner peripheral side thermoplastic resin tube 3 folded into a U-shape is drawn into the outer peripheral side thermoplastic resin tube 2, and then both ends are sealed. Heated steam is supplied inside, and the inner peripheral side thermoplastic resin tube 3 is restored to a circular shape by the shape memory effect. Next, compressed air is supplied into the inner peripheral side thermoplastic resin tube 3, the inner peripheral side thermoplastic resin tube 3 is expanded, and is brought into close contact with the inner peripheral surface of the outer peripheral side thermoplastic resin tube 2. At this time, the flexible inner peripheral side thermoplastic resin tube 3 is cooled by supplying compressed air, and is in close contact with the inner peripheral surface of the outer peripheral side thermoplastic resin tube 2 to be solidified. Further, since sand s is adhered to the outer peripheral surface of the inner peripheral side thermoplastic resin tube 3, the inner peripheral side thermoplastic resin tube 3 slips with respect to the outer peripheral side thermoplastic resin tube 2 due to the frictional resistance of the sand s. Is prevented.

具体的には、内径６００ｍｍ、長さ３０ｍのヒューム管を次のように更正した。   Specifically, a fume tube having an inner diameter of 600 mm and a length of 30 m was corrected as follows.

まず、肉厚１２ｍｍの外周側硬質塩化ビニル製樹脂管を既設管にライニングした後、肉厚１２ｍｍで、外周面に平均粒径６０メッシュ（９０％パス）の砂を１平方メートル当たり２ｋｇ付着させた内周側硬質塩化ビニル製樹脂管を外周側硬質塩化ビニル製樹脂管にライニングした。   First, after lining a 12 mm thick outer peripheral side hard vinyl chloride resin pipe to an existing pipe, 2 kg of sand with an average particle size of 60 mesh (90% pass) was attached to the outer peripheral surface at a thickness of 12 mm per square meter. The inner peripheral side hard vinyl chloride resin tube was lined with the outer peripheral side hard vinyl chloride resin tube.

なお、内径６００ｍｍ、長さ３０ｍの既設管を更生する場合に、更生管（硬質塩化ビニル製樹脂管）が自立強度を確保するための肉厚は２４ｍｍであり、その施工に要する時間は１５時間連続で施工する必要がある。   In addition, when rehabilitating an existing pipe having an inner diameter of 600 mm and a length of 30 m, the thickness of the rehabilitation pipe (hard vinyl chloride resin pipe) for securing a self-supporting strength is 24 mm, and the construction time is 15 hours. It is necessary to work continuously.

本実施例の更生管、すなわち、肉厚１２ｍｍの外周側硬質塩化ビニル製樹脂管および肉厚１２ｍｍの内周側硬質塩化ビニル製樹脂管からなる更生管は、自立強度を有する。また、施工に要した時間は、６時間×２回＝１２時間であり、肉厚２４ｍｍの硬質塩化ビニル製樹脂管によって既設管を更正したときの施工に要した１５時間連続よりも３時間短縮された。また、既設管の水替えの際の交通規制は、一般的に１０時間連続が限度であるが、１回の施工に要した時間（６時間）は、限度内にあることから、既設管の水替えをしながら更生することが可能となった。   The rehabilitated tube of this example, that is, the rehabilitated tube composed of the outer peripheral side hard vinyl chloride resin tube having a thickness of 12 mm and the inner peripheral side hard vinyl chloride resin tube having a thickness of 12 mm has a self-supporting strength. The time required for construction is 6 hours x 2 times = 12 hours, which is 3 hours shorter than the 15-hour continuous time required for construction when the existing pipe is modified with a hard vinyl chloride resin pipe with a thickness of 24 mm. It was done. In addition, the traffic regulation when replacing existing pipes is generally limited to 10 hours continuously, but the time required for one construction (6 hours) is within the limit. It was possible to rehabilitate while changing water.

図３には、本発明の既設管の更生方法の第２実施形態が示されている。   FIG. 3 shows a second embodiment of the existing pipe rehabilitation method of the present invention.

この更生方法によって得られた更生管１は、既設管Ｋの内周面にライニングされた外周側熱可塑性樹脂管２と、外周側熱可塑性樹脂管２の内周面にライニングされた内周側熱可塑性樹脂管３と、から構成されている。   The rehabilitation pipe 1 obtained by this rehabilitation method includes an outer peripheral side thermoplastic resin pipe 2 lined on the inner peripheral surface of the existing pipe K and an inner peripheral side lined on the inner peripheral surface of the outer peripheral side thermoplastic resin pipe 2. And a thermoplastic resin tube 3.

そして、外周側熱可塑性樹脂管２の肉厚および内周側熱可塑性樹脂管３の肉厚は、それぞれ自立強度を確保する肉厚の１／３以上に設定されており、かつ、外周側熱可塑性樹脂管２の肉厚および内周側熱可塑性樹脂管３の肉厚の和は、自立強度を確保することができる肉厚以上となるように設定されている。   The wall thickness of the outer peripheral side thermoplastic resin tube 2 and the wall thickness of the inner peripheral side thermoplastic resin tube 3 are each set to 1/3 or more of the wall thickness ensuring the self-supporting strength, and the outer peripheral side heat The sum of the thickness of the plastic resin tube 2 and the thickness of the inner peripheral side thermoplastic resin tube 3 is set to be equal to or greater than the thickness capable of ensuring the self-supporting strength.

この場合、外周側熱可塑性樹脂管２の内周面には、周方向に設定間隔をおいて管軸方向に延びる複数個のリブ２１が形成されている。   In this case, a plurality of ribs 21 extending in the tube axis direction with a set interval in the circumferential direction are formed on the inner peripheral surface of the outer peripheral side thermoplastic resin tube 2.

このような更生管１は、次のように施工される。   Such a rehabilitation pipe 1 is constructed as follows.

まず、Ｕ字状に折り畳まれた外周側熱可塑性樹脂管２を既設管Ｋ内に引き込んだ後、両端を密閉して内部に加熱蒸気を供給し、外周側熱可塑性樹脂管２を形状記憶効果によって円形に復元させる。次いで、外周側熱可塑性樹脂管２の内部に圧縮空気を供給し、外周側熱可塑性樹脂管２を膨張させ、既設管Ｋの内周面に密着させる。この際、可撓性を有する外周側熱可塑性樹脂管２は、圧縮空気の供給によって冷却し、既設管Ｋの内周面に密着した状態で固化する。   First, after the outer peripheral side thermoplastic resin tube 2 folded in a U-shape is drawn into the existing tube K, both ends are sealed and heated steam is supplied to the inside, so that the outer side thermoplastic resin tube 2 has a shape memory effect. To restore a circle. Next, compressed air is supplied to the inside of the outer peripheral side thermoplastic resin tube 2, the outer peripheral side thermoplastic resin tube 2 is expanded and brought into close contact with the inner peripheral surface of the existing tube K. At this time, the outer peripheral side thermoplastic resin pipe 2 having flexibility is cooled by supplying compressed air and solidified while being in close contact with the inner peripheral surface of the existing pipe K.

外周側熱可塑性樹脂管２のライニングが終了したならば、Ｕ字状に折り畳まれた内周側熱可塑性樹脂管３を外周側熱可塑性樹脂管２の内部に引き込んだ後、両端を密閉して内部に加熱蒸気を供給し、内周側熱可塑性樹脂管３を形状記憶効果によって円形に復元させる。次いで、内周側熱可塑性樹脂管３の内部に圧縮空気を供給し、内周側熱可塑性樹脂管３を膨張させ、外周側熱可塑性樹脂管２の内周面に密着させる。この際、可撓性を有する内周側熱可塑性樹脂管３は、圧縮空気の供給によって冷却する際に、リブ２１に沿うように変形し、その内周面を滑らかな凹凸面に形成して外周側熱可塑性樹脂管２の内周面に密着して固化する。また、内周側熱可塑性樹脂管３は、外周側熱可塑性樹脂管２の内周面に形成されたリブ２１がアンカーとなって外周側熱可塑性樹脂管２に対する滑りが防止される。   When the lining of the outer peripheral side thermoplastic resin tube 2 is finished, the inner peripheral side thermoplastic resin tube 3 folded into a U-shape is drawn into the outer peripheral side thermoplastic resin tube 2, and then both ends are sealed. Heated steam is supplied inside, and the inner peripheral side thermoplastic resin tube 3 is restored to a circular shape by the shape memory effect. Next, compressed air is supplied into the inner peripheral side thermoplastic resin tube 3, the inner peripheral side thermoplastic resin tube 3 is expanded, and is brought into close contact with the inner peripheral surface of the outer peripheral side thermoplastic resin tube 2. At this time, the flexible inner peripheral side thermoplastic resin tube 3 is deformed along the rib 21 when cooled by the supply of compressed air, and the inner peripheral surface thereof is formed into a smooth uneven surface. The outer peripheral side thermoplastic resin tube 2 is solidified in close contact with the inner peripheral surface. In addition, the inner peripheral side thermoplastic resin tube 3 is prevented from slipping with respect to the outer peripheral side thermoplastic resin tube 2 with ribs 21 formed on the inner peripheral surface of the outer peripheral side thermoplastic resin tube 2 serving as anchors.

具体的には、内径６００ｍｍ、長さ３０ｍのヒューム管を次のように更正した。   Specifically, a fume tube having an inner diameter of 600 mm and a length of 30 m was corrected as follows.

まず、リブを除く肉厚１２ｍｍで、リブの高さ５ｍｍ、幅１０ｍｍ、リブ間隔５０ｍｍの外周側硬質塩化ビニル製樹脂管を既設管にライニングした後、肉厚１２ｍｍの内周側硬質塩化ビニル製樹脂管を外周側硬質塩化ビニル製樹脂管にライニングした。   First, after lining an outer-side hard vinyl chloride resin pipe with a wall thickness of 12 mm excluding ribs, rib height of 5 mm, width of 10 mm, and rib spacing of 50 mm to the existing pipe, the inner-wall side hard vinyl chloride made of 12 mm thick The resin tube was lined to the outer peripheral side hard vinyl chloride resin tube.

本実施例の更生管、すなわち、肉厚１２ｍｍの外周側硬質塩化ビニル製樹脂管および肉厚１２ｍｍの内周側硬質塩化ビニル製樹脂管からなる更生管は、自立強度を有する。また、施工に要した時間は，６時間×２回＝１２時間であり、肉厚２４ｍｍの硬質塩化ビニル製樹脂管によって既設管を更正したときの施工に要した時間１５時間連続よりも３時間短縮された。また、既設管の水替えの際の交通規制は、一般的に１０時間連続が限度であるが、１回の施工に要した時間（６時間）は、限度内にあることから、既設管の水替えをしながら更生することが可能となった。   The rehabilitated tube of this example, that is, the rehabilitated tube composed of the outer peripheral side hard vinyl chloride resin tube having a thickness of 12 mm and the inner peripheral side hard vinyl chloride resin tube having a thickness of 12 mm has a self-supporting strength. Moreover, the time required for the construction was 6 hours × 2 times = 12 hours, and the time required for the construction when the existing pipe was corrected with a hard vinyl chloride resin pipe having a thickness of 24 mm was 3 hours rather than 15 hours continuous. Shortened. In addition, the traffic regulation when replacing existing pipes is generally limited to 10 hours continuously, but the time required for one construction (6 hours) is within the limit. It was possible to rehabilitate while changing water.

図４には、本発明の既設管の更生方法の第３実施形態が示されている。   FIG. 4 shows a third embodiment of the existing pipe rehabilitation method of the present invention.

この更生方法によって得られた更生管１は、既設管Ｋの内周面にライニングされた外周側熱可塑性樹脂管２と、外周側熱可塑性樹脂管２の内周面にライニングされた金属管４と、金属管４の内周面にライニングされた内周側熱可塑性樹脂管３と、から構成されている。   The rehabilitation pipe 1 obtained by this rehabilitation method includes an outer peripheral side thermoplastic resin pipe 2 lined on the inner peripheral surface of the existing pipe K and a metal pipe 4 lined on the inner peripheral surface of the outer peripheral side thermoplastic resin pipe 2. And an inner peripheral side thermoplastic resin tube 3 lined on the inner peripheral surface of the metal tube 4.

そして、外周側熱可塑性樹脂管２の肉厚および内周側熱可塑性樹脂管３の肉厚は、それぞれ自立強度を確保する肉厚未満の肉厚に設定されており、かつ、外周側熱可塑性樹脂管２の肉厚、金属管４の肉厚および内周側熱可塑性樹脂管３の肉厚の和は、自立強度を確保することができる肉厚以上となるように設定されている。   The wall thickness of the outer peripheral side thermoplastic resin tube 2 and the wall thickness of the inner peripheral side thermoplastic resin tube 3 are each set to a thickness less than the wall thickness ensuring the self-supporting strength, and the outer peripheral side thermoplasticity. The sum of the thickness of the resin tube 2, the thickness of the metal tube 4, and the thickness of the inner peripheral side thermoplastic resin tube 3 is set to be equal to or greater than the thickness that can ensure the self-supporting strength.

また、金属管４は、金属製帯状板を、その端縁同士が一部重なるように螺旋状に巻回して製管されたものであり、帯状板の表裏面には、接着剤、例えば、ホットメルト接着剤が塗布されており、外周側熱可塑性樹脂管２の内周面および内周側熱可塑性樹脂管３の外周面と接着可能となっている。   Further, the metal tube 4 is formed by spirally winding a metal strip plate so that the edges overlap each other, and an adhesive, for example, on the front and back surfaces of the strip plate, A hot melt adhesive is applied, and can be bonded to the inner peripheral surface of the outer peripheral side thermoplastic resin tube 2 and the outer peripheral surface of the inner peripheral side thermoplastic resin tube 3.

なお、金属製の帯状板を螺旋状に巻回して製管された金属管４に代えて、短管状金属管を順に挿入して形成された金属管であってもよい。   In addition, it may replace with the metal pipe 4 produced by winding a metal strip | belt-shaped plate helically, and the metal pipe formed by inserting a short tubular metal pipe in order may be sufficient.

このような更生管１は、次のように施工される。   Such a rehabilitation pipe 1 is constructed as follows.

まず、Ｕ字状に折り畳まれた外周側熱可塑性樹脂管２を既設管Ｋ内に引き込んだ後、両端を密閉して内部に加熱蒸気を供給し、外周側熱可塑性樹脂管２を形状記憶効果によって円形に復元させる。次いで、外周側熱可塑性樹脂管２の内部に圧縮空気を供給し、外周側熱可塑性樹脂管２を膨張させ、既設管Ｋの内周面に密着させる。この際、可撓性を有する外周側熱可塑性樹脂管２は、圧縮空気の供給によって冷却し、既設管Ｋの内周面に密着した状態で固化する。   First, after the outer peripheral side thermoplastic resin tube 2 folded in a U-shape is drawn into the existing tube K, both ends are sealed and heated steam is supplied to the inside, so that the outer side thermoplastic resin tube 2 has a shape memory effect. To restore a circle. Next, compressed air is supplied to the inside of the outer peripheral side thermoplastic resin tube 2, the outer peripheral side thermoplastic resin tube 2 is expanded and brought into close contact with the inner peripheral surface of the existing tube K. At this time, the outer peripheral side thermoplastic resin pipe 2 having flexibility is cooled by supplying compressed air and solidified while being in close contact with the inner peripheral surface of the existing pipe K.

外周側熱可塑性樹脂管２のライニングが終了したならば、外周側熱可塑性樹脂管２の内部において、設定幅の金属製帯状板を螺旋状に巻回して製管し、外周側熱可塑性樹脂管２の内周面に接して金属管４を配置した後、金属管４の両端を既設管Ｋに対して止着する。   When the lining of the outer peripheral side thermoplastic resin tube 2 is finished, the outer peripheral side thermoplastic resin tube 2 is spirally wound inside the outer peripheral side thermoplastic resin tube 2 to form a pipe, and the outer peripheral side thermoplastic resin tube is formed. After the metal tube 4 is disposed in contact with the inner peripheral surface of the metal tube 2, both ends of the metal tube 4 are fixed to the existing tube K.

この後、Ｕ字状に折り畳まれた内周側熱可塑性樹脂管３を金属管４の内部に引き込んだ後、両端を密閉して内部に加熱蒸気を供給し、内周側熱可塑性樹脂管３を形状記憶効果によって円形に復元させる。次いで、内周側熱可塑性樹脂管３の内部に圧縮空気を供給し、内周側熱可塑性樹脂管３を膨張させ、金属管４の内周面に密着させる。この際、可撓性を有する内周側熱可塑性樹脂管３は、圧縮空気の供給によって冷却する際に、その熱を金属管４に伝導し、その内外周面に塗布されたホットメルト接着剤を溶融させ、金属管４を外周側熱可塑性樹脂管２の内周面および内周側熱可塑性樹脂管３の外周面にそれぞれ接着する一方、金属管４の内周面に密着して固化する。   Thereafter, the inner peripheral side thermoplastic resin tube 3 folded in a U-shape is drawn into the metal tube 4, both ends are sealed, and heated steam is supplied to the inner side, and the inner peripheral side thermoplastic resin tube 3. Is restored to a circular shape by the shape memory effect. Next, compressed air is supplied into the inner peripheral side thermoplastic resin tube 3, the inner peripheral side thermoplastic resin tube 3 is expanded and brought into close contact with the inner peripheral surface of the metal tube 4. At this time, when the inner peripheral side thermoplastic resin tube 3 having flexibility is cooled by supplying compressed air, the heat is transferred to the metal tube 4 and applied to the inner and outer peripheral surfaces of the hot melt adhesive. And the metal tube 4 is bonded to the inner peripheral surface of the outer peripheral side thermoplastic resin tube 2 and the outer peripheral surface of the inner peripheral side thermoplastic resin tube 3, respectively, while being in close contact with the inner peripheral surface of the metal tube 4 and solidified. .

具体的には、内径６００ｍｍ、長さ３０ｍのヒューム管を次のように更正した。   Specifically, a fume tube having an inner diameter of 600 mm and a length of 30 m was corrected as follows.

まず、肉厚８ｍｍの外周側硬質塩化ビニル製樹脂管を既設管にライニングした後、８０℃で接着性能を有するホットメルト接着剤が表裏面に塗布された幅７６２ｍｍ、板厚３ｍｍの溶融亜鉛めっき鋼板を螺旋状に巻回して製管された金属管を外周側樹硬質塩化ビニル製樹脂管の内周面に沿って配置した。次いで、肉厚８ｍｍの内周側硬質塩化ビニル製樹脂管を金属管にライニングした。   First, after lining an outer peripheral side hard vinyl chloride resin pipe having a wall thickness of 8 mm to an existing pipe, hot dip galvanizing having a width of 762 mm and a plate thickness of 3 mm was applied to the front and back surfaces of a hot melt adhesive having adhesive performance at 80 ° C. A metal tube formed by spirally winding a steel plate was disposed along the inner peripheral surface of the outer peripheral side hard vinyl chloride resin tube. Next, an inner peripheral side hard vinyl chloride resin pipe having a wall thickness of 8 mm was lined with a metal pipe.

本実施例の更生管、すなわち、肉厚８ｍｍの外周側硬質塩化ビニル製樹脂管、板厚３ｍｍの溶融亜鉛めっき鋼板製の金属管および肉厚８ｍｍの内周側硬質塩化ビニル製樹脂管からなる更生管は、自立強度を有する。また、施工に要した時間は、６時間×３回＝１８時間であり、肉厚２４ｍｍの硬質塩化ビニル製樹脂管によって既設管を更正したときの施工に要した時間１５時間連続よりも３時間延長されたものの、既設管の水替えの際の交通規制は、一般的に１０時間連続が限度であるが、１回の施工に要した時間（６時間）は、限度内にあることから、既設管の水替えをしながら更生することが可能となった。   The rehabilitation pipe of this example, that is, an outer peripheral side hard vinyl chloride resin pipe having a wall thickness of 8 mm, a metal pipe made of a hot dip galvanized steel sheet having a thickness of 3 mm, and an inner peripheral side hard vinyl chloride resin pipe having a wall thickness of 8 mm. The rehabilitation tube has a self-supporting strength. Moreover, the time required for the construction was 6 hours × 3 times = 18 hours, and the time required for the construction when the existing pipe was corrected with a hard vinyl chloride resin pipe having a thickness of 24 mm was 3 hours rather than 15 hours continuous. Although it was extended, the traffic regulation when changing the water of existing pipes is generally limited to 10 hours continuously, but the time required for one construction (6 hours) is within the limits. It was possible to rehabilitate existing pipes while changing water.

図５には、本発明の既設管の更生方法の第４実施形態が示されている。   FIG. 5 shows a fourth embodiment of the existing pipe rehabilitation method of the present invention.

この更生方法によって得られた更生管１は、既設管Ｋの内周面にライニングされた外周側熱可塑性樹脂管２と、外周側熱可塑性樹脂管２の内周面にライニングされた内周側熱可塑性樹脂管５と、から構成されている。   The rehabilitation pipe 1 obtained by this rehabilitation method includes an outer peripheral side thermoplastic resin pipe 2 lined on the inner peripheral surface of the existing pipe K and an inner peripheral side lined on the inner peripheral surface of the outer peripheral side thermoplastic resin pipe 2. And a thermoplastic resin tube 5.

そして、外周側熱可塑性樹脂管２の肉厚は、自立強度を確保する肉厚の１／３以上に設定されており、かつ、外周側熱可塑性樹脂管２の肉厚および内周側熱可塑性樹脂管５の肉厚の和は、自立強度を確保することができる肉厚以上となるように設定されている。   And the wall thickness of the outer peripheral side thermoplastic resin pipe 2 is set to 1/3 or more of the wall thickness which ensures self-supporting strength, and the wall thickness of the outer peripheral side thermoplastic resin pipe 2 and the inner peripheral side thermoplasticity are set. The sum of the thicknesses of the resin pipes 5 is set to be equal to or greater than the thickness capable of ensuring the self-supporting strength.

この場合、内周側熱可塑性樹脂管５は、熱可塑性樹脂製のリブ付き帯状板６（図６参照）を螺旋状に巻回して製管された従来公知のものである。   In this case, the inner peripheral side thermoplastic resin tube 5 is a conventionally known tube that is formed by spirally winding a ribbed strip plate 6 (see FIG. 6) made of thermoplastic resin.

このような更生管１は、次のように施工される。   Such a rehabilitation pipe 1 is constructed as follows.

まず、Ｕ字状に折り畳まれた外周側熱可塑性樹脂管２を既設管Ｋ内に引き込んだ後、両端を密閉して内部に加熱蒸気を供給し、外周側熱可塑性樹脂管２を形状記憶効果によって円形に復元させる。次いで、外周側熱可塑性樹脂管２の内部に圧縮空気を供給し、外周側熱可塑性樹脂管２を膨張させ、既設管Ｋの内周面に密着させる。この際、可撓性を有する外周側熱可塑性樹脂管２は、圧縮空気の供給によって冷却し、既設管Ｋの内周面に密着した状態で固化する。   First, after the outer peripheral side thermoplastic resin tube 2 folded in a U-shape is drawn into the existing tube K, both ends are sealed and heated steam is supplied to the inside, so that the outer side thermoplastic resin tube 2 has a shape memory effect. To restore a circle. Next, compressed air is supplied to the inside of the outer peripheral side thermoplastic resin tube 2, the outer peripheral side thermoplastic resin tube 2 is expanded and brought into close contact with the inner peripheral surface of the existing tube K. At this time, the outer peripheral side thermoplastic resin pipe 2 having flexibility is cooled by supplying compressed air and solidified while being in close contact with the inner peripheral surface of the existing pipe K.

外周側熱可塑性樹脂管２のライニングが終了したならば、外周側熱可塑性樹脂管２の内部において、熱可塑性樹脂製のリブ付き帯状板６を螺旋状に巻回して製管し、外周側熱可塑性樹脂管２の内周面に接する内周側熱可塑性樹脂管５を配置した後、その両端を既設管Ｋに対して止着する。この際、内周側熱可塑性樹脂管５を構成する熱可塑性樹脂製のリブ付き帯状板６は、そのリブ６１が外周側熱可塑性樹脂管２の内周面に螺旋状に接触することにより、リブ６１の摩擦抵抗によって外周側熱可塑性樹脂管２に対する内周側熱可塑性樹脂管５の滑りが防止される。また、外周側熱可塑性樹脂管２および内周側熱可塑性樹脂管５を積層することによって自立強度を確保することから、熱可塑性樹脂製のリブ付き帯状板６を螺旋状に巻回して製管された内周側熱可塑性樹脂管５単独で更正する場合には必要となる裏込め材が不要となる。   When the lining of the outer peripheral side thermoplastic resin tube 2 is finished, the strip plate 6 with ribs made of thermoplastic resin is spirally wound inside the outer peripheral side thermoplastic resin tube 2 to form the outer peripheral side heat. After arranging the inner peripheral side thermoplastic resin tube 5 in contact with the inner peripheral surface of the plastic resin tube 2, both ends thereof are fastened to the existing tube K. At this time, the ribbed belt-like plate 6 made of the thermoplastic resin constituting the inner peripheral side thermoplastic resin tube 5 has its ribs 61 spirally contacting the inner peripheral surface of the outer peripheral side thermoplastic resin tube 2, The friction resistance of the rib 61 prevents the inner peripheral side thermoplastic resin tube 5 from slipping with respect to the outer peripheral side thermoplastic resin tube 2. Also, since the self-supporting strength is ensured by laminating the outer peripheral side thermoplastic resin tube 2 and the inner peripheral side thermoplastic resin tube 5, the ribbed strip 6 made of thermoplastic resin is spirally wound to form a pipe. In the case where the inner peripheral side thermoplastic resin pipe 5 is corrected by itself, a necessary back-filling material becomes unnecessary.

具体的には、内径６００ｍｍ、長さ３０ｍのヒューム管を次のように更正した。   Specifically, a fume tube having an inner diameter of 600 mm and a length of 30 m was corrected as follows.

まず、肉厚１２ｍｍの外周側硬質塩化ビニル製樹脂管を既設管にライニングした後、幅８０ｍｍ、リブを除く肉厚が４ｍｍで、リブの高さ１５ｍｍの硬質塩化ビニル製のリブ付き帯状板を螺旋状に巻回して製管された内周側樹脂管を外周側硬質塩化ビニル製樹脂管にライニングした。   First, a 12 mm thick outer peripheral side hard vinyl chloride resin pipe is lined on the existing pipe, and then a ribbon-like strip made of hard polyvinyl chloride with a width of 80 mm, a thickness excluding the ribs of 4 mm, and a rib height of 15 mm. The inner peripheral side resin pipe wound and formed into a spiral was lined with the outer peripheral side hard vinyl chloride resin pipe.

本実施例の更生管、すなわち、肉厚１２ｍｍの外周側硬質塩化ビニル製樹脂管および肉厚４ｍｍ、リブの高さ１５ｍｍの硬質塩化ビニル製のリブ付き帯状板を螺旋状に巻回して製管された内周側樹脂管からなる更生管は、自立強度を有する。また、施工に要した時間は、外周側硬質塩化ビニル製樹脂管のライニングに６時間、リブ付き帯状板を螺旋状に巻回して製管された内周側樹脂管のライニングに６時間、合計１２時間であり、肉厚２４ｍｍの硬質塩化ビニル製樹脂管によって既設管を更正したときの施工に要した時間１５時間連続よりも３時間短縮された。また、既設管の水替えの際の交通規制は、一般的に１０時間連続が限度であるが、１回の施工に要した時間（６時間）は、限度内にあることから、既設管の水替えをしながら更生することが可能となった。   The rehabilitated pipe of this example, that is, a 12 mm thick outer peripheral side hard vinyl chloride resin pipe and a 4 mm thick, rigid vinyl chloride ribbed strip with a rib height of 15 mm are spirally wound to form a pipe. The rehabilitation pipe made of the inner peripheral side resin pipe has a self-supporting strength. In addition, the time required for the construction was 6 hours for the lining of the outer peripheral side hard vinyl chloride resin pipe, and 6 hours for the lining of the inner peripheral side resin pipe that was produced by spirally winding a strip with ribs. It was 12 hours, which was 3 hours shorter than the continuous 15 hours required for construction when the existing pipe was corrected with a hard vinyl chloride resin pipe having a thickness of 24 mm. In addition, the traffic regulation when replacing existing pipes is generally limited to 10 hours continuously, but the time required for one construction (6 hours) is within the limit. It was possible to rehabilitate while changing water.

ところで、前述した実施形態においては、外周側熱可塑性樹脂管および内周側熱可塑性樹脂管をそれぞれライニングする場合を説明したが、外周側熱可塑性樹脂管および内周側熱可塑性樹脂管に代えて、詳細には図示しないが、熱または光によって硬化する樹脂が含浸された繊維を有する外周側ライニング材および内周側ライニング材を挿入し、または、反転挿入し、外周側ライニング材および内周側ライニング材を加圧して復元膨張させた後、熱または光によって樹脂を硬化させてライニングするようにしてもよい。   By the way, in the above-described embodiment, the case where the outer peripheral side thermoplastic resin tube and the inner peripheral side thermoplastic resin tube are respectively lined has been described, but instead of the outer peripheral side thermoplastic resin tube and the inner peripheral side thermoplastic resin tube. Although not shown in detail, the outer peripheral side lining material and the inner peripheral side lining material having fibers impregnated with resin cured by heat or light are inserted or inverted, and the outer peripheral side lining material and the inner peripheral side are inserted. After the lining material is pressurized and restored and expanded, the resin may be cured by heat or light for lining.

本発明の既設管の更生方法の第１実施形態を説明する工程図である。It is process drawing explaining 1st Embodiment of the rehabilitation method of the existing pipe | tube of this invention. 図１（ｂ）のＡ部拡大図である。It is the A section enlarged view of FIG.1 (b). 本発明の既設管の更生方法の第２実施形態を説明する工程図である。It is process drawing explaining 2nd Embodiment of the rehabilitation method of the existing pipe | tube of this invention. 本発明の既設管の更生方法の第３実施形態を説明する工程図である。It is process drawing explaining 3rd Embodiment of the rehabilitation method of the existing pipe | tube of this invention. 本発明の既設管の更生方法の第４実施形態を説明する工程図である。It is process drawing explaining 4th Embodiment of the rehabilitation method of the existing pipe | tube of this invention. 図５の内周側熱可塑性樹脂管を構成するリブ付き帯状板の断面図である。It is sectional drawing of the strip | belt-shaped board with a rib which comprises the inner peripheral side thermoplastic resin pipe | tube of FIG.

符号の説明Explanation of symbols

１ 更生管
２ 外周側熱可塑性樹脂管
２１ リブ
３，５ 内周側熱可塑性樹脂管
４ 金属管
６ 熱可塑性樹脂製リブ付き帯状板
６１ リブ
Ｋ 既設管
ｓ 砂 DESCRIPTION OF SYMBOLS 1 Rehabilitation pipe 2 Outer peripheral side thermoplastic resin pipe 21 Rib 3, 5 Inner peripheral side thermoplastic resin pipe 4 Metal pipe 6 Strip plate with rib made of thermoplastic resin 61 Rib K Existing pipe s Sand

Claims (6)

自立強度を確保する肉厚の１／３以上の肉厚を有する外周側熱可塑性樹脂管を既設管内に挿入し、該外周側熱可塑性樹脂管を加熱および加圧することによって復元膨張させて既設管の内周面にライニングした後、該外周側熱可塑性樹脂管内に、自立強度を確保する肉厚の１／３以上の肉厚であって、外周側熱可塑性樹脂管の肉厚と合わせて自立強度を確保する肉厚以上となる肉厚を有する外面砂付き内周側熱可塑性樹脂管を挿入し、該内周側熱可塑性樹脂管を加熱および加圧することによって復元膨張させて外周側熱可塑性樹脂管の内周面にライニングすることを特徴とする既設管の更生方法。   Inserting an outer peripheral side thermoplastic resin pipe having a thickness of 1/3 or more of the thickness to ensure self-supporting strength into the existing pipe, and heating and pressurizing the outer peripheral side thermoplastic resin pipe to restore and expand the existing pipe After being lined on the inner peripheral surface of the outer peripheral side, the outer peripheral side thermoplastic resin tube has a thickness of 1/3 or more of the wall thickness ensuring the self-supporting strength, and is self-supporting together with the outer peripheral side thermoplastic resin tube thickness. Insert the inner peripheral side thermoplastic resin tube with sand that has a thickness equal to or greater than the thickness to ensure strength, and heat and press the inner peripheral side thermoplastic resin tube to restore and expand the outer peripheral side thermoplastic An existing pipe rehabilitation method characterized by lining the inner peripheral surface of a resin pipe. 自立強度を確保する肉厚の１／３以上の肉厚を有し、内周面に周方向に間隔をおいて管軸方向に延びる複数本のリブを設けた外周側熱可塑性樹脂管を既設管内に挿入し、該外周側熱可塑性樹脂管を加熱および加圧することによって復元膨張させて既設管の内周面にライニングした後、該外周側熱可塑性樹脂管内に、自立強度を確保する肉厚の１／３以上の肉厚であって、外周側熱可塑性樹脂管の肉厚と合わせて自立強度を確保する肉厚以上となる肉厚を有する内周側熱可塑性樹脂管を挿入し、該内周側熱可塑性樹脂管を加熱および加圧することによって復元膨張させて外周側熱可塑性樹脂管の内周面にライニングすることを特徴とする既設管の更生方法。   An outer peripheral side thermoplastic resin tube having a thickness of 1/3 or more of the wall thickness to ensure self-supporting strength and provided with a plurality of ribs extending in the tube axis direction at intervals in the circumferential direction on the inner peripheral surface Thickness to ensure self-supporting strength in the outer peripheral side thermoplastic resin tube after being inserted into the pipe, restored and expanded by heating and pressurizing the outer side thermoplastic resin tube and lining on the inner peripheral surface of the existing pipe An inner peripheral side thermoplastic resin tube having a thickness equal to or more than 1/3 of the thickness of the outer peripheral side thermoplastic resin tube and having a thickness equal to or greater than a thickness that secures a self-supporting strength, A method for rehabilitating an existing pipe, wherein the inner circumference side thermoplastic resin pipe is restored and expanded by heating and pressurizing and lining the inner circumference surface of the outer circumference side thermoplastic resin pipe. 自立強度を確保する肉厚未満の肉厚を有する外周側熱可塑性樹脂管を既設管内に挿入し、該外周側熱可塑性樹脂管を加熱および加圧することによって復元膨張させて既設管の内周面にライニングした後、該外周側熱可塑性樹脂管の内周面に金属管を配置し、次いで、金属管内に、自立強度を確保する肉厚未満の肉厚であって、外周側熱可塑性樹脂管の肉厚および金属管の肉厚と合わせて自立強度を確保する肉厚以上となる肉厚を有する内周側熱可塑性樹脂管を挿入し、該内周側熱可塑性樹脂管を加熱および加圧することによって復元膨張させて金属管の内周面にライニングすることを特徴とする既設管の更生方法。   An outer peripheral side thermoplastic resin pipe having a thickness less than the thickness to ensure self-supporting strength is inserted into the existing pipe, and the outer peripheral side thermoplastic resin pipe is heated and pressurized to be restored and expanded, so that the inner peripheral surface of the existing pipe After the lining, a metal tube is arranged on the inner peripheral surface of the outer peripheral side thermoplastic resin tube, and then the outer peripheral side thermoplastic resin tube has a wall thickness less than a wall thickness for ensuring self-supporting strength in the metal tube. The inner peripheral side thermoplastic resin tube having a thickness equal to or greater than the thickness that secures the self-supporting strength in combination with the thickness of the metal tube and the thickness of the metal tube is inserted, and the inner peripheral side thermoplastic resin tube is heated and pressurized. A method for rehabilitating an existing pipe, characterized in that the pipe is restored and expanded to line the inner peripheral surface of the metal pipe. 自立強度を確保する肉厚の１／３以上の肉厚を有する外周側熱可塑性樹脂管を既設管内に挿入し、該外周側熱可塑性樹脂管を加熱および加圧することによって復元膨張させて既設管の内周面にライニングした後、該外周側熱可塑性樹脂管の内周面に、外周側熱可塑性樹脂管の肉厚と合わせて自立強度を確保する肉厚以上となる肉厚を有する熱可塑性樹脂製のリブ付き帯状体を螺旋状に巻回して製管された内周側熱可塑性樹脂管をライニングすることを特徴とする既設管の更生方法。   Inserting an outer peripheral side thermoplastic resin pipe having a thickness of 1/3 or more of the thickness to ensure self-supporting strength into the existing pipe, and heating and pressurizing the outer peripheral side thermoplastic resin pipe to restore and expand the existing pipe After lining the inner peripheral surface of the outer peripheral side thermoplastic resin tube, the inner peripheral surface of the outer peripheral side thermoplastic resin tube has a wall thickness that is equal to or greater than the wall thickness to ensure self-supporting strength together with the outer peripheral side thermoplastic resin tube A method for rehabilitating an existing pipe, characterized by lining an inner peripheral side thermoplastic resin pipe formed by spirally winding a strip-shaped body made of resin with a rib. 前記外周側熱可塑性樹脂管および内周側熱可塑性樹脂管に代えて、熱または光によって硬化する樹脂が含浸された繊維を有する外周側ライニング材および内周側ライニング材を挿入し、または、反転挿入し、外周側ライニング材および内周側ライニング材を加圧することによって復元膨張させた後、熱または光によって樹脂を硬化させてライニングすることを特徴とする請求項１乃至３の何れかに記載の既設管の更生方法。   Instead of the outer peripheral side thermoplastic resin tube and the inner peripheral side thermoplastic resin tube, an outer peripheral side lining material and an inner peripheral side lining material having fibers impregnated with heat or light-cured resin are inserted or reversed. The resin is cured by heat or light, and then lining is inserted and then expanded by pressurizing the outer circumferential lining material and the inner circumferential lining material. Rehabilitation method for existing pipes. 前記外周側熱可塑性樹脂管に代えて、熱または光によって硬化する樹脂が含浸された繊維を有する外周側ライニング材を挿入し、または、反転挿入し、外周側ライニング材を加圧することによって復元膨張させた後、熱または光によって樹脂を硬化させてライニングすることを特徴とする請求項４記載の既設管の更生方法。   In place of the outer peripheral side thermoplastic resin pipe, an outer peripheral side lining material having fibers impregnated with heat or light-curing resin is inserted or reversely inserted, and the expansion is restored by pressurizing the outer peripheral side lining material. 5. The method for rehabilitating an existing pipe according to claim 4, wherein the resin is cured by heat or light and then lining.
JP2006256200A 2006-09-21 2006-09-21 Regeneration method of existing pipe Pending JP2008073962A (en)

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KR20110008410A (en) * 2009-07-20 2011-01-27 주식회사 엘지화학 Composition for encapsulating light emitting device, light emitting diode and liquid crystal display
JP2013095103A (en) * 2011-11-04 2013-05-20 Yoshika Engineering Kk Regeneration pipe and method of forming the same
CN106247010A (en) * 2016-09-26 2016-12-21 天津倚通科技发展有限公司 A kind of no-dig technique can cross curved pipe update method

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JPH10314668A (en) * 1997-05-16 1998-12-02 Shin Etsu Polymer Co Ltd Production of sanded pipe
JPH11333934A (en) * 1998-05-28 1999-12-07 Sekisui Chem Co Ltd Regeneration of existing piping
JP2002018955A (en) * 2000-07-06 2002-01-22 Sekisui Chem Co Ltd Interpolation pipe and method for inserting the same
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KR20110008410A (en) * 2009-07-20 2011-01-27 주식회사 엘지화학 Composition for encapsulating light emitting device, light emitting diode and liquid crystal display
KR101601271B1 (en) 2009-07-20 2016-03-08 주식회사 엘지화학 Composition for encapsulating light emitting device light emitting diode and liquid crystal display
JP2013095103A (en) * 2011-11-04 2013-05-20 Yoshika Engineering Kk Regeneration pipe and method of forming the same
CN106247010A (en) * 2016-09-26 2016-12-21 天津倚通科技发展有限公司 A kind of no-dig technique can cross curved pipe update method
CN106247010B (en) * 2016-09-26 2018-10-02 天津倚通科技发展有限公司 A kind of no-dig technique can cross curved pipe update method

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