JPH0663591B2 - Method of rehabilitating existing aged pipe - Google Patents
Method of rehabilitating existing aged pipeInfo
- Publication number
- JPH0663591B2 JPH0663591B2 JP61119056A JP11905686A JPH0663591B2 JP H0663591 B2 JPH0663591 B2 JP H0663591B2 JP 61119056 A JP61119056 A JP 61119056A JP 11905686 A JP11905686 A JP 11905686A JP H0663591 B2 JPH0663591 B2 JP H0663591B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- thin plate
- thin
- plate
- overlapping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 9
- 239000002184 metal Substances 0.000 claims description 34
- 229910052751 metal Inorganic materials 0.000 claims description 34
- 238000003466 welding Methods 0.000 claims description 16
- 239000004570 mortar (masonry) Substances 0.000 claims description 13
- 239000000565 sealant Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000005304 joining Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims 2
- 229910001220 stainless steel Inorganic materials 0.000 description 10
- 239000010935 stainless steel Substances 0.000 description 10
- 238000010276 construction Methods 0.000 description 8
- 229910001018 Cast iron Inorganic materials 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、管内径８００mmφ以上の既設の水道管等の更
生方法に関する。The present invention relates to a method for rehabilitating an existing water pipe having an inner diameter of 800 mmφ or more.
既設の埋設鋳鉄水道管等の中には、割れや継手部シール
不良等によって漏水等を生じたり、老朽により赤水が発
生したりしているものがあるが、建物、道路その他の構
築物等によって敷設替えができない条件下にある配管が
ある。このような既設配管で管内径が８００mmφ以上の
大管径を更生する方法として、口径が既敷設管より５０
〜１００mm小さい新管を既設管内に挿入し、既設管と新
管との間にモルタルを注入して固定する方法、いわゆる
「パイプインパイプ工法」が採用されている。Some existing buried cast iron water pipes may cause water leakage due to cracks, poor sealing of joints, etc., or red water due to deterioration, but they are laid by buildings, roads and other structures. Some piping is in a condition that cannot be replaced. As a method of rehabilitating a large pipe with an inner diameter of 800 mmφ or more with such an existing pipe,
A so-called "pipe-in-pipe construction method" is employed, in which a new pipe smaller than -100 mm is inserted into an existing pipe, and mortar is injected and fixed between the existing pipe and the new pipe.
このような工法は、次の問題点がある。Such a construction method has the following problems.
（１）新管が長さ４〜６ｍの直管となるため、これを埋
設管内に挿入するための大規模な作業立坑を必要とし、
建設コストが高騰する。(1) Since the new pipe will be a straight pipe with a length of 4 to 6 m, a large-scale work shaft is required to insert this into the buried pipe,
Construction costs rise.
（２）新管の接合はアーク溶接のため長時間を要するほ
か、発生ヒュームにより管内雰囲気が汚染され作業環境
が劣悪となる。(2) Joining a new pipe takes a long time because of arc welding, and the fumes generated contaminate the atmosphere inside the pipe, resulting in a poor working environment.
（３）既設管と新管との間にモルタルを注入するため、
コスト高となる。また注入圧による内管の座屈を防ぐた
めに新管の管厚を厚くしなければならない。(3) To inject mortar between the existing pipe and the new pipe,
High cost. Also, the thickness of the new pipe must be increased to prevent buckling of the inner pipe due to the injection pressure.
（４）新管の口径が既設管より５０〜１００mm減少する
ため、有効流送断面積が減少する。(4) Since the diameter of the new pipe is 50 to 100 mm smaller than that of the existing pipe, the effective delivery cross-sectional area is reduced.
（５）新管内の現地溶接部には防食塗覆装を施さなけれ
ばならない。(5) Field welding in the new pipe must be coated with anticorrosion coating.
（６）曲管部の施工が容易でない。(6) It is not easy to construct the curved pipe section.
本発明は上記問題点を解決した既設老朽配管の更生方法
を提供することを目的とし、作業立坑が小さくて済み、
管内雰囲気を汚染することなく、また管断面積をほとん
ど縮小させることなく、さらに防食塗覆装も要すること
なく、容易に大口径既設老朽配管の更生ができる方法を
提供することを目的とするものである。The present invention aims to provide a method for rehabilitating an existing aged pipe that solves the above problems, and the work shaft may be small,
An object of the present invention is to provide a method capable of easily rehabilitating an old pipe with a large diameter without polluting the pipe atmosphere, reducing the pipe cross-sectional area, and without requiring anticorrosion coating. Is.
本発明方法の第１の発明は直管に適用されるものであっ
て、次の技術手段から成る。The first invention of the method of the present invention is applied to a straight pipe and comprises the following technical means.
（ａ）ライニング材として、更生すべき配管内径の円周
長に重ね代を加えた長さと１〜1.5ｍの幅をもつ金属薄
板を、その相隣る二辺の辺縁をそれぞれの辺縁に沿って
１８０°折曲げて幅狭の折曲げ片を形成しておく。(A) As a lining material, a metal thin plate having a length obtained by adding a stacking margin to the circumferential length of the inner diameter of the pipe to be rehabilitated and a width of 1 to 1.5 m is used. Bend 180 ° along to form a narrow bent piece.
（ｂ）更生すべき凹凸を呈する管内面を清掃し、モルタ
ル吹付けした後、前記薄板を管内に持ち込み、管内径に
ライニングする。このとき、隣接薄板との継目部は折曲
げ片を隣接する薄板の辺縁上に重ねて重なり部を形成す
るようにする。(B) After cleaning the inner surface of the tube having irregularities to be rehabilitated and spraying mortar, the thin plate is brought into the tube and lined to the inner diameter of the tube. At this time, the joint portion with the adjacent thin plate is formed by overlapping the bent piece on the edge of the adjacent thin plate to form an overlapping portion.
（ｃ）上記薄板の重なり部をスポット溶接により接合す
る。スポット溶接のピッチは５０〜８０mmが適当であ
る。(C) Join the overlapping portions of the thin plates by spot welding. A spot welding pitch of 50 to 80 mm is suitable.
（ｄ）前記重ね合わせ部に水封用弾性シール剤を充填す
る。(D) An elastic sealant for water sealing is filled in the overlapping portion.
次に本発明の第２の発明は曲管に適用されるもので、そ
の主要部は第１の発明と同様であって、次の技術手段か
ら成るものである。Next, the second invention of the present invention is applied to a curved pipe, and the main part thereof is the same as that of the first invention, and comprises the following technical means.
（ａ′）ライニング材として、次の２種類の金属薄板を
準備する。(A ') The following two types of thin metal plates are prepared as lining materials.
ｉ）第１の金属薄板は、曲管内面の最短母線を含む幅方
向に湾曲し長手方向に反りを有する細長矩形状の金属薄
板 ii）第２の金属板は、曲管内面の第１の金属板の部分を
除く部分のライニング材で、曲管内面の最長母線を含む
内面部分を長手方向に分割した複数の金属薄板からな
り、各第２の金属薄板には両端部と一側面部に重ね代を
設けると共に、それぞれの辺縁をそれぞれの辺縁に沿っ
て１８０°折曲げて幅狭の折曲げ片を形成しておく。i) The first metal thin plate is an elongated rectangular metal thin plate which is curved in the width direction including the shortest generatrix of the inner surface of the curved pipe and has a warp in the longitudinal direction. ii) The second metal plate is the first thin metal plate of the inner surface of the curved pipe. It is a lining material for the part excluding the part of the metal plate, and consists of a plurality of metal thin plates obtained by dividing the inner surface part including the longest generatrix of the inner surface of the curved pipe in the longitudinal direction. Each second metal thin plate has both end parts and one side part. A margin for overlapping is provided, and each side edge is bent 180 ° along each side edge to form a narrow bent piece.
（ｂ′）更生すべき管内面を清掃し、モルタル吹付けし
た後、前記薄板を管内に持ち込み、管内径にライニング
する。このとき、第１の金属薄板をその長手方向を曲管
内の最短母線に沿って配設し、第２の金属薄板の長手両
端の折曲げ片を第１の金属薄板の側縁に重ねて重なり部
を形成し、かつ前記一側面部の折曲げ片を隣接する第２
の金属薄板の側縁上に重ねて重なり部を形成するように
前記第１の薄板及び第２の薄板を前記モルタル内面にラ
イニングする。(B ') The inner surface of the pipe to be rehabilitated is cleaned and sprayed with mortar, and then the thin plate is brought into the pipe and lined to the inner diameter of the pipe. At this time, the first thin metal plate is arranged in the longitudinal direction along the shortest generatrix in the curved pipe, and the bent pieces at both longitudinal ends of the second thin metal plate are overlapped and overlapped on the side edges of the first thin metal plate. Forming a portion and adjoining the bent piece of the one side surface portion
The first thin plate and the second thin plate are lined on the inner surface of the mortar so as to overlap with the side edges of the metal thin plate to form an overlapping portion.
（ｃ′）上記第１の薄板と第２の薄板の重なり部及び第
２の薄板同士の重なり部をスポット溶接により接合す
る。スポット溶接のピッチは５０〜８０mmが適当であ
る。(C ') The overlapping portion of the first thin plate and the second thin plate and the overlapping portion of the second thin plates are joined by spot welding. A spot welding pitch of 50 to 80 mm is suitable.
（ｄ′）前記各重なり部に水封用弾性シール剤を充填す
る。(D ') An elastic sealant for water sealing is filled in each of the overlapping portions.
本発明では金属薄板の切板を管内に持ち込んでライニン
グするので、大きな作業立坑を構築する必要がなく、ま
た管内径の縮小が極めて僅かである。In the present invention, since a thin metal plate is brought into the pipe for lining, it is not necessary to construct a large work shaft, and the pipe inner diameter is reduced only slightly.
モルタルを吹付けることにより、内張りのための下地処
理の作用と、ライニング材として用いる金属鋼板と鋳鉄
管との直接接触を防止し、異種金属であるために起る孔
食やもらい錆等の発生を避ける作用をなす。By spraying mortar, the effect of undercoating for the inner lining and direct contact between the metal steel sheet used as the lining material and the cast iron pipe are prevented, and pitting corrosion and corrosive rust caused by different metals occur. Acts to avoid.
薄板の接合はスポット溶接とシール剤によるので、作業
環境を悪化せず、防食処理も必要としない。Since thin plates are joined by spot welding and a sealant, they do not deteriorate the working environment and do not require anticorrosion treatment.
金属薄板は厚さが0.5〜0.8mmであるので、軽量でかつ管
内ライニングとして適切な腰の強さを有し、加工容易で
ある。金属薄板としてはステンレスシートが最も適当
で、耐久に富み加工性にすぐれている。また、曲管部を
施工することが容易にできる。Since the thin metal plate has a thickness of 0.5 to 0.8 mm, it is lightweight, has a suitable strength as an inner lining, and is easily processed. The most suitable thin metal plate is the stainless steel sheet, which has excellent durability and workability. Further, it is possible to easily construct the curved pipe portion.
重なり部は金属薄板の２辺を折曲げ加工してあるのでこ
の折曲げ部がシール剤のポケットとなって、薄板の縁を
押上げる等の作業を要せずに容易にシール剤を重なり部
の隙間に充填することができる。シール剤としてはシリ
コーン系の防水剤が好適である。Since the overlapping part is formed by bending two sides of the thin metal plate, this bent part becomes a pocket for the sealing agent, and the sealing agent can be easily overlapped without pushing up the edge of the thin plate. Can be filled in the gap. A silicone-based waterproofing agent is suitable as the sealing agent.
内径８００mmφの既設鋳鉄管に本発明法を適用して配管
の更生を行った。The method of the present invention was applied to an existing cast iron pipe having an inner diameter of 800 mmφ to rehabilitate the pipe.
第１図はその説明のための直管配管の一部切断斜視図を
示し、第２図はライニングの重なり部の断面図（第１図
のＡ−Ａ矢視図、Ｂ−Ｂ矢視図）を示し、第３図は伸縮
継手構造を示す断面図である。FIG. 1 shows a partially cut perspective view of a straight pipe for the purpose of explanation, and FIG. 2 is a cross-sectional view of an overlapping portion of a lining (A-A arrow view and BB arrow view of FIG. 1). ) And FIG. 3 is a sectional view showing the expansion joint structure.
鋳鉄管１の内壁を４kg／cm2の噴射圧力水で洗浄した
後、水セメント比４５％のモルタル２を塗膜厚さ５mmを
目標として吹付け、平滑仕上げした後、熱風乾燥した。
モルタルには混和剤を混入し、モルタルが下方へ流れ落
ちたり垂れたりしないようにモルタルに適度の粘性と硬
化性と付与した。After the inner wall of the cast iron pipe 1 was washed with water having a jet pressure of 4 kg / cm 2 , mortar 2 having a water-cement ratio of 45% was sprayed with a coating film thickness of 5 mm as the target, smoothed, and then dried with hot air.
An admixture was added to the mortar to give it proper viscosity and hardening so that it would not run down or drip.
次いで、厚さ0.7mm、長さ２５４０mm、幅１２００mm、
折曲げ１０mmのステンレス鋼板３（ＳＵＳ３０４）の薄
板を順次鋳鉄管１内に持込み、隣接するステンレス鋼板
との円周重なり部４および同一のステンレス鋼板３ａシ
ートの管軸方向重なり部５同士を重ねて順次内張りし、
ジャッキで重なり部４、５が互いに密着するように押さ
えながらＴＩＧスポット溶接６を行った。溶接電流は６
０〜８０Ａで、スポット時間は１箇所約２秒で完了す
る。スポット溶接のピッチは管周、管軸方向共５０mmと
した。Next, thickness 0.7mm, length 2540mm, width 1200mm,
A thin plate of a stainless steel plate 3 (SUS304) having a bend of 10 mm is successively brought into the cast iron pipe 1, and a circumferential overlapping part 4 with an adjacent stainless steel plate and a pipe axial direction overlapping part 5 of the same stainless steel plate 3a are overlapped with each other. Lined in order,
TIG spot welding 6 was performed while pressing the overlapping portions 4 and 5 with a jack so as to closely contact each other. Welding current is 6
At 0 to 80 A, the spot time for one spot is about 2 seconds. The spot welding pitch was 50 mm in both the pipe circumference and the pipe axis direction.
なお、管軸方向の重ね線はステンレス鋼板各枚ごとに１
００mm程度ずらして連続線とならないように配慮した。The overlap line in the tube axis direction is 1 for each stainless steel plate.
Consideration was given so that it would not be a continuous line by shifting about 00 mm.
スポット溶接接合の進行に合わせてそのあとから、重な
り部４、５に沿って全線にシリコーン系シール剤７を注
入充填した。重なり部４、５はステンレス鋼板の折曲げ
片８がシール剤７の注入時のふところのような形状をし
ているのでシール剤の注入は容易である。After that, along with the progress of the spot welding, the silicone-based sealant 7 was injected and filled into the entire line along the overlapping portions 4 and 5. The overlapping parts 4 and 5 are easy to inject the sealant because the bent pieces 8 of the stainless steel plate have a shape like a pocket when the sealant 7 is injected.
また鋳鉄管の継手部は第３図に示すようにステンレス鋼
板の重なり部の重なり代を大きくすると共に、重なり部
に粘着ベルト９を介在させて伸縮可能にした。Further, as shown in FIG. 3, the joint portion of the cast iron pipe has a large overlap margin of the overlapping portion of the stainless steel plate, and is made expandable and contractable by interposing the adhesive belt 9 in the overlapping portion.
次に第４図に曲管部の施工図として断面斜視図を示し
た。曲管の場合は細長矩形状の第１の金属薄板１０を、
その長手方向を曲管内径の最短母線１１に沿わせてまず
配設し、これを中継板として第２の金属薄板１２の長手
方向両端縁をこれに重ねて円周方向にライニングし、折
り曲げ縁を隣接する第２の金属薄板１２ａに重ねて重な
り部を形成しつつライニングする。その他の処理は上記
直管部の施工と同様であり、シール剤を重なり部に注入
してライニングを終了する。Next, FIG. 4 shows a sectional perspective view as a construction drawing of the curved pipe portion. In the case of a curved tube, the elongated rectangular first thin metal plate 10 is used.
First, the longitudinal direction is arranged along the shortest busbar 11 of the inner diameter of the curved pipe, and this is used as a relay plate, the longitudinal end edges of the second thin metal plate 12 are overlapped with this, and are lined in the circumferential direction. Are overlapped with the adjacent second metal thin plate 12a to form an overlapping portion and are lined. The other processing is the same as the construction of the straight pipe portion, and the sealing agent is injected into the overlapping portion to finish the lining.
以上の工程を終了した後、シール剤の乾燥硬化をまって
老朽管の更生が完了した。After the above steps were completed, the sealant was dried and cured, and the rehabilitation of the aged pipe was completed.
シール剤の乾燥硬化後、重なり部全線に亘って真空テス
トを行い、ピンホール等の欠陥がないことを確認した。After the sealant was dried and cured, a vacuum test was conducted over the entire overlap line, and it was confirmed that there were no defects such as pinholes.
本発明は次のすぐれた効果を奏する。 The present invention has the following excellent effects.
（イ）ライニング材として金属薄板（特にステンレス鋼
板）を用いるので作業立坑が小さくてすみ、また吊下げ
などの重機が不要となり、建設コストが低減する。(A) Since a thin metal plate (particularly a stainless steel plate) is used as the lining material, the work shaft can be small, and heavy equipment such as hanging is not required, which reduces the construction cost.
（ロ）ライニング材の接合はスポット溶接とシール材と
したのでヒュームの発生がなく、雰囲気空気が清浄に保
たれ作業環境を劣化させない。またスポット溶接は接合
速度が速く迅速施工が可能である。(B) Since the lining material is joined by spot welding and the sealing material, no fumes are generated, the atmospheric air is kept clean, and the working environment is not deteriorated. In addition, spot welding has a high joining speed and can be quickly applied.
（ハ）シール剤の充填が容易で格別の技能を要せず、か
つ完全なシール部を容易に得ることができる。シール剤
が硬化後は弾性的な動きを示し、管内圧が増大するほ
ど、折曲げ片のふところに入り込み、水密性が一層向上
するセルフシール作用をなし好適である。(C) It is easy to fill the sealing agent, does not require special skill, and a complete sealing portion can be easily obtained. The sealant exhibits elastic movement after curing, and as the pipe pressure increases, the sealant enters the corners of the bent piece and has a self-sealing effect of further improving watertightness, which is preferable.
（ニ）ライニング材としてステンレス鋼板を使用すると
半永久的な防錆が可能で耐久性に富む。また防食塗装等
が不要で、飲料水や錆や溶剤が混入するのを防止するこ
とができる。(D) If stainless steel plate is used as the lining material, semi-permanent rust prevention is possible and it is highly durable. Further, anticorrosion coating is not required, and it is possible to prevent the mixing of drinking water, rust, and solvent.
（ホ）曲管部の更生も直管部と同様に容易に施工するこ
とができる。(E) Rehabilitation of the curved pipe portion can be easily performed like the straight pipe portion.
（ヘ）総合コストは安価で、一般的な条件下において比
較すると、パイプインパイプ工法に比し５０〜７０％で
ある。さらに耐用年数を加味すれば５０％以下となる。(F) The total cost is low, and when compared under general conditions, it is 50 to 70% compared to the pipe-in-pipe construction method. Furthermore, if the service life is added, it will be 50% or less.
第１図は本発明の実施例の説明のための直管配管の一部
切断斜視図を示し、第２図はライニングの重なり部の断
面図（第１図のＡ−Ａ矢視またはＢ−Ｂ矢視図）、第３
図は伸縮継手構造を示す管の部分断面図、第４図は曲管
の施工を説明する曲管配管の断面斜視図である。 １…鋳鉄管 ２…モルタル ３、３ａ…金属薄板（ステンレス鋼板） ４、５…重なり部 ６…スポット溶接 ７…シール剤 ８…折曲げ片 ９…粘着ベルト １０…第１の金属薄板 １１…最短母線 １２、１２ａ…第２の金属薄板 １３…最長母線FIG. 1 shows a partially cut perspective view of a straight pipe for explaining an embodiment of the present invention, and FIG. 2 is a cross-sectional view of an overlapping portion of a lining (A-A arrow or B- in FIG. 1). B view), 3rd
FIG. 4 is a partial cross-sectional view of a pipe showing an expansion joint structure, and FIG. 4 is a cross-sectional perspective view of a curved pipe for explaining construction of a curved pipe. 1 ... Cast iron pipe 2 ... Mortar 3, 3a ... Metal thin plate (stainless steel plate) 4, 5 ... Overlap part 6 ... Spot welding 7 ... Sealing agent 8 ... Bending piece 9 ... Adhesive belt 10 ... First metal thin plate 11 ... Shortest Bus bar 12, 12a ... Second metal thin plate 13 ... Longest bus bar
Claims (2)
の円周長に重ね代を加えた長さをもつ金属薄板の相隣る
二辺の辺縁をそれぞれ辺縁に沿って１８０°折曲げて幅
狭の折曲げ片を形成しておき、更生すべき凹凸を呈する
管内面を清掃し、モルタル吹付けした後、前記折曲げ片
を隣接薄板の辺縁上に重ねて重なり部を形成するように
前記薄板を前記モルタル内面にライニングし、前記重な
り部をスポット溶接により接合し、次いで前記重なり部
に水封用弾性シール剤を充填することを特徴とする既設
老朽配管の更生方法。1. A metal thin plate having a width of 1 to 1.5 m and a length of a pipe inner diameter to be rehabilitated, plus an overlap margin, is formed along two adjacent edges. And bend it 180 ° to form a narrow bent piece, clean the inner surface of the pipe that has irregularities to be rehabilitated, spray mortar, and then stack the bent piece on the edge of the adjacent thin plate. The thin plate is lined to the inner surface of the mortar so as to form an overlapping portion, the overlapping portion is joined by spot welding, and then the overlapping portion is filled with a water seal elastic sealant. Rehabilitation method.
短母線を含む幅方向に湾曲し長手方向に反りを有する細
長矩形状の第１の金属薄板と、残余の曲管内面の最長母
線を含む部分を長手方向に分割した複数の第２の金属薄
板とに分離し、第２の金属薄板は両端部と一側面部に重
ね代を設けると共に、それぞれの辺縁をそれぞれ辺縁に
沿って１８０°折曲げて幅狭の折曲げ片を形成してお
き、更生すべき管内面を清掃し、モルタル吹付けした
後、第１の金属薄板をその長手方向を曲管内の最短母線
に沿って配設し、第２の金属薄板の長手両端の前記折曲
げ片を第１の金属薄板の側縁上に重ねて重なり部を形成
しかつ前記一側面部の折曲げ片を隣接第２の金属薄板の
側縁上に重ねて重なり部を形成するように前記第１の薄
板及び第２の薄板を前記モルタル内面にライニングし、
前記各重なり部をスポット溶接により接合し、次いで前
記各重なり部に水封用弾性シール剤を充填することを特
徴とする既設老朽配管の更生方法。2. A slender rectangular first metal thin plate having a curved inner surface and a warp in the longitudinal direction, which is curved in the width direction including the shortest generatrix of the inner surface of the curved pipe, and the remaining inner surface of the curved pipe. The portion including the longest busbar is separated into a plurality of second metal thin plates divided in the longitudinal direction, and the second metal thin plate has a margin for overlapping at both end portions and one side surface portion, and each edge is a margin. Bend 180 ° along to form a narrow bent piece, clean the inner surface of the pipe to be rehabilitated, spray mortar, and then move the first thin metal plate in its longitudinal direction to the shortest busbar in the curved pipe. The bent pieces at both longitudinal ends of the second thin metal plate are overlapped on the side edges of the first thin metal plate to form an overlapping portion, and the bent pieces of the one side face are adjacent to each other. The first thin plate and the second thin plate are fronted so as to form an overlapping portion on the side edge of the second thin metal plate. Lining the inner surface of the mortar,
A method of rehabilitating an existing aged pipe, comprising joining the overlapping portions by spot welding and then filling the overlapping portions with an elastic sealant for water sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61119056A JPH0663591B2 (en) | 1986-05-26 | 1986-05-26 | Method of rehabilitating existing aged pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61119056A JPH0663591B2 (en) | 1986-05-26 | 1986-05-26 | Method of rehabilitating existing aged pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62278398A JPS62278398A (en) | 1987-12-03 |
| JPH0663591B2 true JPH0663591B2 (en) | 1994-08-22 |
Family
ID=14751813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61119056A Expired - Lifetime JPH0663591B2 (en) | 1986-05-26 | 1986-05-26 | Method of rehabilitating existing aged pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0663591B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6177196B2 (en) * | 2014-06-14 | 2017-08-09 | 株式会社サンケン | Piping regeneration method |
| JP6177197B2 (en) * | 2014-06-14 | 2017-08-09 | 株式会社サンケン | Piping regeneration method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5545183U (en) * | 1978-09-19 | 1980-03-24 | ||
| US4412371A (en) * | 1981-06-11 | 1983-11-01 | Badische Corporation | Device for introducing a traveling yarn into a yarn treatment chamber |
-
1986
- 1986-05-26 JP JP61119056A patent/JPH0663591B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62278398A (en) | 1987-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5613806A (en) | Sealing system for sewer and water applications | |
| CN110565975A (en) | Method for self-compacting concrete reinforcing column by externally sleeved thin-wall steel pipe | |
| JPH0663591B2 (en) | Method of rehabilitating existing aged pipe | |
| CN107098622B (en) | A kind of compound mortar of high-performance reinforces the construction method of existing subway tunnel structure | |
| CN212774331U (en) | Tunnel corrugated steel plate reinforcement device | |
| KR200198028Y1 (en) | Flange conneted structure of double pe sheet coating corrugated steel pipe | |
| KR101710872B1 (en) | Pipe Lining Structure and Method of Building the Same | |
| CN217735514U (en) | A new type of pre-embedded steel plate structure on shield segments of power tunnels | |
| RU2224169C2 (en) | Method of repair of pipe lines and sleeve for performing such repair | |
| CN218378240U (en) | Pipe jacking pipeline section structure and pipe jacking pipeline structure | |
| CN115899385B (en) | Waterproof construction method for reinforcing waterproof wing plate part of wall bushing | |
| CN207716449U (en) | A kind of anticorrosion structure of chimney deflector | |
| CN216045912U (en) | Large-caliber thin-wall stainless steel spiral welded pipe | |
| CN205578947U (en) | Anticorrosive device of repaired mouth of pipeline butt joint weld bond | |
| CN213393951U (en) | Connecting structure of flue and alloy expansion joint in desulfurization system | |
| RU2002112542A (en) | The method of repair of the pipeline and the coupling for its implementation | |
| JPH01229189A (en) | Steel pipe for sewage | |
| CN214467082U (en) | Insulation construction of buried pipeline | |
| CN216843716U (en) | Oil gas gathering pipeline anticorrosion equipment | |
| CN215166670U (en) | Composite water-stopping steel belt with water-swelling water-stopping strip | |
| JPH11166398A (en) | How to repair a culvert | |
| RU2384786C1 (en) | Method of connecting pipes with internal cement-sand coating | |
| CN210106790U (en) | A bellows joint connection structure | |
| CN120119802A (en) | Construction method of caulking deformation joints of super-long concrete pool wall in water plant | |
| JP7241501B2 (en) | tunnel with waterway |