JPS62261792A - Method of regenerating obsolete pipe - Google Patents
Method of regenerating obsolete pipeInfo
- Publication number
- JPS62261792A JPS62261792A JP10431486A JP10431486A JPS62261792A JP S62261792 A JPS62261792 A JP S62261792A JP 10431486 A JP10431486 A JP 10431486A JP 10431486 A JP10431486 A JP 10431486A JP S62261792 A JPS62261792 A JP S62261792A
- Authority
- JP
- Japan
- Prior art keywords
- inner pipe
- pipe
- fluid
- pipes
- old
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 15
- 230000001172 regenerating effect Effects 0.000 title claims description 10
- 239000012530 fluid Substances 0.000 claims description 24
- 230000000903 blocking effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 6
- 230000003449 preventive effect Effects 0.000 claims description 6
- 230000032683 aging Effects 0.000 claims description 4
- 230000035882 stress Effects 0.000 description 13
- 238000003780 insertion Methods 0.000 description 11
- 230000037431 insertion Effects 0.000 description 11
- 238000001125 extrusion Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Sewage (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は老朽化した海底パイプラインや陸上パイプライ
ンその他の埋設管老朽を再生使用できるよう構成した、
老朽管の再生方法に関するものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention is constructed so that old submarine pipelines, land pipelines, and other buried pipes can be reused.
This relates to a method for regenerating old pipes.
〈従来の技術〉
埋設管が腐蝕やひび割れによって老朽化すると、輸送物
の漏出事故の発生率が高くなる。<Conventional Technology> When buried pipes become obsolete due to corrosion or cracking, the incidence of leakage accidents of transported materials increases.
このような漏出事故を防止するために、老朽化した管（
老朽管）に替えて新たな管（新設管）を敷設することも
考えられるが、敷設ルートの確保や工事費用等の問題が
残るために、老朽化した既設管を利用して新設管を埋設
する方法が研究されている。To prevent such leakage accidents, old pipes (
It is possible to lay a new pipe (new pipe) in place of the old pipe, but since there are still problems such as securing the installation route and construction costs, it is not recommended to use the old existing pipe and bury the new pipe. Methods to do so are being researched.
く本発明が解決しようとする問題点〉
上記の例に代表される老朽管の敷設替えの技術には次の
ような問題点が存在する。Problems to be Solved by the Present Invention> The following problems exist in the technique of replacing old pipes as typified by the above example.
（イ）新設管の敷設にあたって、新設管を前方から引き
寄せる方法は、新設管を牽引するためのワイヤをまず老
朽管の先端から他端まで通しておかなければならない。(b) When laying a new pipe, the method of pulling the new pipe from the front requires first passing the wire for pulling the new pipe from one end of the old pipe to the other.
そのための工事に手数がかかり、さらに牽引ワイヤが老
朽管の内面を傷つけてしまう。The construction work is time-consuming, and the traction wires damage the inner surface of the old pipes.
（ロ）また、新設管の挿入にあたって新設管を押込む方
法が存在する。(b) There is also a method of pushing in the new pipe when inserting it.
この方法の場合、新設管に過大な圧縮力がはたらいて座
屈等が発生するおそれがある。In the case of this method, there is a risk that excessive compressive force will be applied to the newly installed pipe, causing buckling or the like.
（ハ）老朽管を撤去しなければならないため、工事が煩
雑となるだけでなく工費が高くつき、さらに工期も長期
化する。(c) The obsolete pipes must be removed, which not only complicates the construction work but also increases the cost and lengthens the construction period.
く本発明の目的〉
本発明は以上のような問題点を解決するために成された
もので、次のような老朽管の再生方法を提供することを
目的とする。OBJECTS OF THE INVENTION The present invention was made to solve the above-mentioned problems, and an object of the present invention is to provide the following method for regenerating old pipes.
（イ）新設管に過大な応力が発生することを防止して、
効率良く新設管を敷設できる老朽管の再生方法。(a) Preventing excessive stress from occurring in newly installed pipes,
A method for regenerating old pipes that allows new pipes to be laid efficiently.
（ロ）老朽管を撤去することな（老朽管の有効利用が可
能な、老朽管の再生方法。(b) A method of regenerating old pipes that allows effective use of old pipes without removing old pipes.
（ハ）何度も老朽管を再生できる、老朽管の再生方法。(c) A method for regenerating old pipes that can be regenerated many times.
く本発明の構成〉
以下、図面を参照しながら本発明の一実施例について説
明する。Configuration of the Present Invention> An embodiment of the present invention will be described below with reference to the drawings.
まず、本実施例に使用する各部材について説明する。（
第１図）
くイ〉内パイプ
■は老朽管Ａの内側に挿入可能な直径の両端開放形の内
パイプである。First, each member used in this example will be explained. (
(Fig. 1) Inner pipe (■) is an inner pipe with both ends open and of a diameter that can be inserted inside the old pipe A.
この内パイプｌの外径は老朽管Ａの内径に近いものとし
、さらに薄肉タイプの管体を使用できる。The outer diameter of this inner pipe 1 should be close to the inner diameter of the old pipe A, and a thin-walled pipe body can be used.
内パイプ１の外周には螺線状に突起体１１を突設させる
場合もある。In some cases, the inner pipe 1 has a protrusion 11 protruding from the outer periphery in a spiral shape.
この突起体１１は、内パイプ１を老朽管Ａ内にスムーズ
に挿入するためにスペーサ的作用をさせる目的の部材で
ある。This protrusion 11 is a member that functions as a spacer in order to smoothly insert the inner pipe 1 into the aged pipe A.
さらに、内パイプ１の先端には例えば先細の蓋体２を嵌
合して着脱自在に閉塞する。Further, a tapered lid 2, for example, is fitted to the tip of the inner pipe 1 to removably close it.
なお、蓋体２は膜構造でも良く、あるいは内パイプ１の
先端を潰して閉塞することも可能である。Note that the lid 2 may have a membrane structure, or may be closed by crushing the tip of the inner pipe 1.
く口〉内パイプの押込み機構
本発明は、ジヤツキの機械的な押込み力と、内パイプ１
内に圧送する水やその他の流体の圧送圧とを併用し、こ
れらの合力を内パイプ１の挿入力として、老朽管Ａ内で
内パイプ１を前進させる。Inner pipe pushing mechanism The present invention utilizes the mechanical pushing force of the jack and the push-in mechanism for the inner pipe 1.
The inner pipe 1 is advanced within the aged pipe A by using the pressure of water or other fluids to be pumped into the pipe A, and the combined force of these forces is used as the insertion force for the inner pipe 1.
すなわち、内パイプｌにジヤツキによる挿入力を与える
には例えば、次のような構成を採用できる。That is, in order to apply insertion force to the inner pipe l by jacking, for example, the following configuration can be adopted.
内パイプ１の後方に反力基板３を配置する。A reaction board 3 is placed behind the inner pipe 1.
そしてこの反力基板３と内パイプ１の尾端間には全円周
線上に圧縮力を与えるための押し出しジヤツキ４を配置
して、内パイプ１を掘進方向に押出せるよう構成する。A push-out jack 4 for applying compressive force along the entire circumference is disposed between the reaction force board 3 and the tail end of the inner pipe 1, so that the inner pipe 1 can be pushed out in the excavation direction.
押出しジヤツキ４は、水圧または油圧等の流体圧で伸縮
する構造のジヤツキであり、この押出しジヤツキ４の先
端には、内パイプ１の後端を把持、解放できるリング状
のリング材５を設ける。The extrusion jack 4 has a structure that expands and contracts using fluid pressure such as water pressure or oil pressure, and a ring-shaped ring member 5 that can grip and release the rear end of the inner pipe 1 is provided at the tip of the extrusion jack 4.
このリング材５で内パイプ１の外周を把持して押出しジ
ヤツキ４を伸長して内パイプ１を押出せるよう構成する
。The ring material 5 grips the outer periphery of the inner pipe 1 and extends the extrusion jack 4 to extrude the inner pipe 1.
また、押出しジヤツキは押込み予定の内パイプ１群の全
長に応じてジヤツキ径ｄを選択して使用する。Further, the extrusion jack is used by selecting the jack diameter d according to the total length of the first group of inner pipes to be pushed.
くハ〉流体圧による押出し機構
内パイプ１に流体の圧送圧による挿入力を与えるには例
えば次のような構成を採用できる。(c) In order to apply an insertion force to the pipe 1 in the extrusion mechanism using fluid pressure by pumping pressure of fluid, the following configuration can be adopted, for example.
反力基板３上には、内パイプ１内に水密状態で挿入して
閉塞する閉塞プラグ６の一端を固定する。One end of a closing plug 6, which is inserted into the inner pipe 1 in a watertight manner to close it, is fixed on the reaction board 3.
この閉塞プラグ６は内パイプ１の内径とほぼ等しい外径
を有する閉塞体であり、内パイプ１との周面間の水蜜性
を確保するために、外周にリング状にシール材７を取り
付けて形成する。This plug 6 is a plug having an outer diameter that is approximately equal to the inner diameter of the inner pipe 1, and a ring-shaped sealing material 7 is attached to the outer periphery to ensure water tightness between the circumferential surface and the inner pipe 1. Form.
一方、圧送ポンプ８からのびるホース９を閉塞プラグ６
を貫通して蓋体２で閉塞された内パイプ１の空間内に案
内し、蓋体２と閉塞プラグ６で閉塞された密封状態の空
間内に、所定の圧送圧に調節された流体を供給できるよ
う構成する。On the other hand, the hose 9 extending from the pressure pump 8 is closed with a plug 6
The fluid is guided into the space of the inner pipe 1 that is closed by the lid body 2, and the fluid adjusted to a predetermined pumping pressure is supplied into the sealed space that is closed by the lid body 2 and the closing plug 6. Configure it so that it can be done.
一方策５図に示すように、閉塞プラグ６と、反力基板３
との間にジヤツキＪを位置させる構成を採用することも
できる。As shown in Figure 5, the blocking plug 6 and the reaction force board 3 are
It is also possible to adopt a configuration in which the jack J is positioned between the two.
その場合には、内パイプ１内に封入した封入水Ｗは、そ
の体積が変化することなく、シたがって閉塞プラグ６と
内パイプ１の位置が変化することな（そのまま内パイプ
ｌと閉塞プラグ６とが一体となって前進することになる
。In that case, the volume of the sealed water W sealed in the inner pipe 1 does not change, and therefore the positions of the blocking plug 6 and the inner pipe 1 do not change (the inner pipe L and the blocking plug remain the same). 6 will move forward together.
次に老朽管の再生方法について説明する。Next, a method for regenerating old pipes will be explained.
＝ ７ −
（１）内パイプの挿入
老朽管Ａの端部から、先端を蓋体２で閉塞した内パイプ
１を挿入する。= 7 - (1) Inserting the inner pipe Insert the inner pipe 1 whose tip is closed with the lid 2 from the end of the aged pipe A.
そして、内パイプ１の尾端から閉塞プラグ６を内挿する
。Then, the closing plug 6 is inserted from the tail end of the inner pipe 1.
このとき、反力基板３上に押出しジヤツキ４をセットし
ておくことも可能である。At this time, it is also possible to set the extrusion jack 4 on the reaction force board 3.
（２）注入圧による押込み（第２図）
圧送ポンプ８を運転して内パイプ１内に流体を連続して
供給する。(2) Pushing by injection pressure (Fig. 2) The pressure pump 8 is operated to continuously supply fluid into the inner pipe 1.
流体の圧送を続けることにより、内パイプ１内の内圧が
上昇し、この内圧が反力基板３で支承されて内パイプ１
が老朽管Ａ内を前進してい（。By continuing to pump the fluid, the internal pressure inside the inner pipe 1 increases, and this internal pressure is supported by the reaction force board 3 and the inner pipe 1 increases.
is moving forward inside old pipe A (.
流体の注入時の反力は閉塞プラグ６が反力基板３によっ
て支持されるので、注入時に閉塞プラグ６が後退するこ
とはない。Since the blocking plug 6 is supported by the reaction force substrate 3 during injection of fluid, the blocking plug 6 does not retreat during injection.
その結果、反力基板３に作用する反力は反作用で内パイ
プｌの前進力として作用する。As a result, the reaction force acting on the reaction force board 3 acts as a reaction force for advancing the inner pipe l.
一方策５．６図の構成においては、前記したように内パ
イプ１内に封入された封入水Ｗは、そのまま一体となっ
てジヤツキＪによって加圧される。On the other hand, in the configuration shown in Figures 5 and 6, the sealed water W sealed in the inner pipe 1 as described above is pressurized by the jack J as it is.
したがって閉塞プラグ６と内パイプ１の位置が変化する
ことなくそのまま内パイプ１と閉塞プラグ６とが一体と
なって前進することになる。Therefore, the positions of the closing plug 6 and the inner pipe 1 do not change, and the inner pipe 1 and the closing plug 6 move forward as a unit.
一本の内パイプ１の挿入を完了したら、閉塞プラグ６を
後退させる等して接続予定の新たな内パイプ１の接続空
間を確保する。When the insertion of one inner pipe 1 is completed, the closing plug 6 is moved back, etc., to secure a connection space for a new inner pipe 1 to be connected.
そして、次の挿入予定の内パイプ１を先行する内パイプ
１に溶接等しながら挿入して、内パイプ群Ｂを形成して
いく。Then, the next inner pipe 1 to be inserted is inserted into the preceding inner pipe 1 while welding or the like to form the inner pipe group B.
（３）流体の圧送圧とジヤツキの挿入力の併用内パイプ
１内の注入圧のみを挿入力とする場合、第７図に示すよ
うに、内パイプ群Ｂの全長りには、先端に向かうほど増
加する傾向の引張応力が発生している。(3) Combination of fluid pumping pressure and jack insertion force When only the injection pressure inside the inner pipe 1 is used as the insertion force, as shown in Fig. 7, the entire length of the inner pipe group B is Tensile stress tends to increase as the temperature increases.
そのため、そのまま流体の圧送圧を増大すると、内パイ
プ１の引張応力が過大となり引張破壊を発生する。Therefore, if the pumping pressure of the fluid is increased as it is, the tensile stress in the inner pipe 1 will become excessive and tensile failure will occur.
そこで、内パイプ１の引張破壊を防止するために本発明
では次のような対策を採用する。Therefore, in order to prevent tensile failure of the inner pipe 1, the following measures are adopted in the present invention.
すなわち、流体の圧送圧を利用した挿入作業と並行して
、あるいはそれとは別に、押出しジヤツキ４で内パイプ
１に軸方向の圧縮力をかける。That is, in parallel with or separately from the insertion operation using fluid pressure, an axial compressive force is applied to the inner pipe 1 by the extrusion jack 4.
内パイプ群Ｂの尾端に押出しジヤツキ４の圧縮力が作用
すると、内パイプ群Ｂには第８図に示すような応力が発
生する。When the compressive force of the pusher jack 4 acts on the tail end of the inner pipe group B, stress as shown in FIG. 8 is generated in the inner pipe group B.
すなわち、内パイプ群Ｂ上には尾端から先端に向けて、
減少傾向の圧縮応力が発生する。That is, on the inner pipe group B, from the tail end to the tip,
A decreasing compressive stress occurs.
その結果、内パイプ群Ｂに発生していた増加傾向の引張
応力と圧縮応力とが内パイプ群Ｂ上で互いに打ち消し合
う。As a result, the increasing tensile stress and compressive stress occurring on the inner pipe group B cancel each other out on the inner pipe group B.
従って、内パイプ群Ｂの先端から距離Ｌ１までの間には
引張応力が発生し、Ｌｌの端から基端までの距離Ｌ２の
間には圧縮応力が発生する。Therefore, tensile stress is generated between the tip of the inner pipe group B and the distance L1, and compressive stress is generated between the distance L2 from the end of L1 to the base end.
内パイプ群Ｂ上に発生するこれらの応力は、いずれも打
ち消し合う以前に比べて小さい。These stresses generated on the inner pipe group B are smaller than before they all cancel each other out.
（４）挿入力の検討
［圧送圧のみの場合］
内パイプ群Ｂに流体の圧送圧のみを作用させた場合の挿
入力ｔは次式であられすことができる。(4) Examination of insertion force [in the case of only pressure-feeding pressure] The insertion force t when only pressure-feeding fluid is applied to the inner pipe group B can be expressed by the following equation.
（Ｄは内パイプ１の内径、 ｐは圧送圧）［圧送圧とジ
ヤツキを併用した場合］
また、内パイプｌ内に流体の圧送圧を作用させながら押
込みジヤツキ４で押込むときの挿入力Ｔは次式であられ
すことができる。(D is the inner diameter of the inner pipe 1, p is the force-feeding pressure) [When force-feeding pressure and jack are used together] Also, the insertion force T when pushing in with the push-in jack 4 while applying the force-feeding pressure of the fluid inside the inner pipe 1. can be expressed by the following equation.
ここに、
Ｒは押し出しジヤツキ４の直径
ｄは内パイプｌとの接触面積
上式から、内パイプ群Ｂへの引張応力が過大となる場合
には、押込みジヤツキ４を伸長して対処できる。Here, R is the diameter d of the push-out jack 4 and the area of contact with the inner pipe 1. According to the formula, if the tensile stress on the inner pipe group B becomes excessive, the push-in jack 4 can be extended to deal with it.
また、ｄを大きくするとＬ２の範囲が太き（なる。Also, when d is increased, the range of L2 becomes thicker.
（５）防錆材等の注入
老朽管Ａと、複数の内パイプ１からなる内パイプ群Ｂと
の周面間に第４図に示すように防錆材１０等を注入する
。(5) Injection of rust preventive material, etc. A rust preventive material 10 or the like is injected between the peripheral surfaces of the aging pipe A and the inner pipe group B consisting of a plurality of inner pipes 1, as shown in FIG.
老朽管Ａは内パイプ群Ｂの保護殻として機能するため、
老朽管Ａを撤去することな（有効に活用できる。Since aging pipe A functions as a protective shell for inner pipe group B,
Do not remove old pipe A (can be used effectively).
以上のようにして、内パイプ群Ｂを所定の距離だけ挿入
したら、内パイプ群Ｂの先端の蓋体２を取り外して、老
朽管Ａと内パイプ群Ｂとからなる再生管Ｃの敷設を終了
する。After inserting the inner pipe group B a predetermined distance as described above, remove the lid 2 at the tip of the inner pipe group B, and complete the installation of the regenerated pipe C consisting of the aged pipe A and the inner pipe group B. do.
くその他の実施例〉
老朽管Ａと内パイプ１との周面間に封入する防錆材１０
中に比重の大きい、例えばベントナイトや濃塩水等の液
体を混入することも考えられる。Other Examples> Rust preventive material 10 sealed between the circumferential surfaces of the aging pipe A and the inner pipe 1
It is also possible to mix a liquid with a high specific gravity, such as bentonite or concentrated salt water.
例えば、内パイプ１内の水の比重が１．０ｇ／−に対し
、老朽管Ａと内パイプｌとの周面間に封入した液の比重
が１．２ｇ／ｃｊとした場合には、その比重の差である
０、２ｇ／−分が内パイプ１の外周断面に増分として作
用する。For example, if the specific gravity of the water in the inner pipe 1 is 1.0 g/- and the specific gravity of the liquid sealed between the circumferential surfaces of the old pipe A and the inner pipe 1 is 1.2 g/cj, then The difference in specific gravity of 0.2 g/min acts on the outer peripheral cross section of the inner pipe 1 as an increment.
従って、内パイプ１０重量が軽減された状態で挿入でき
るので挿入力は小さくて済み、長大な内パイプ１の押込
みが容易となる。Therefore, since the inner pipe 10 can be inserted with its weight reduced, the insertion force can be small, and the long inner pipe 1 can be easily pushed in.
このように老朽管Ａと内パイプ１との間に封入する液体
の比重を選択することにより、内パイプ１を無重力状態
で挿入することも可能である。By selecting the specific gravity of the liquid sealed between the aged pipe A and the inner pipe 1 in this way, it is also possible to insert the inner pipe 1 in a weightless state.
なお、防錆材１０の防錆効果も期待できることは勿論で
ある。It goes without saying that the rust preventive effect of the rust preventive material 10 can also be expected.
く本発明の効果〉
本発明は以上説明したようになるから次のような効果を
得ることができる。Effects of the Present Invention> Since the present invention is as described above, the following effects can be obtained.
（イ）流体の圧送圧を利用する押込みと、ジヤツキによ
る押込みを同時に行うことにより、内パイプ群に過大な
応力の発生を抑制できる。(a) By simultaneously performing pushing using fluid pressure and pushing using jacks, it is possible to suppress the generation of excessive stress in the inner pipe group.
従って、座屈や引張破壊の発生を抑えながら内パイプ群
を相当長い距離まで挿入できる。Therefore, the inner pipe group can be inserted over a considerably long distance while suppressing the occurrence of buckling and tensile failure.
（ロ）老朽管と内パイプ群との周面間には防錆性の注入
材を注入するが、老朽管と内パイプ群とは固着しない。(b) Rust-preventive injection material is injected between the circumferential surfaces of the aged pipe and the inner pipe group, but the aged pipe and the inner pipe group do not stick together.
従って、内パイプ群が老朽しても老朽化した内パイプ群
を撤去して新規の内パイプに何度でも再交換できる。Therefore, even if the inner pipe group becomes obsolete, the aged inner pipe group can be removed and replaced with new inner pipes as many times as necessary.
（ハ）老朽管は撤去しないで、内パイプ群の保護殻とし
て機能する。(c) Old pipes will not be removed, but will function as a protective shell for the inner pipe group.
従って、老朽管の撒去作業を必要とせず、工期の短縮、
工費の低減を図ることができる。Therefore, there is no need to remove old pipes, shortening the construction period.
It is possible to reduce construction costs.
（ニ）外部からの圧力等に対しては老朽管が内パイプ群
を保護し、内面は耐蝕性に優れた新たな内パイプからな
る内パイプ群で保護されるから、再生後の管体は強靭と
なる。(d) The old pipe protects the inner pipe group from external pressure, etc., and the inner surface is protected by the inner pipe group consisting of new inner pipes with excellent corrosion resistance, so the pipe body after regeneration is Become strong.
第１図二本発明の老朽管の再生方法に使用する各部材の
説明図
第２〜４図：老朽管の再生方法の説明図第５〜６図：老
朽管の再生方法の他実施例の説明図
第７．８図：応力状態の説明図
第８
図
図Fig. 1 2 An explanatory diagram of each member used in the method for regenerating old pipes of the present invention Figs. 2 to 4: An explanatory diagram of the method for regenerating old pipes Figs. Explanatory diagram Figure 7.8: Explanatory diagram of stress state Figure 8
Claims (8)
、 かつ、この内パイプの後端には軸方向の圧縮力をかけて
前進させて行う、 老朽管の再生方法(1) Insert an inner pipe with the tip closed into the old pipe, inject fluid into this inner pipe, pressurize the inner pipe from the inside through this fluid and move it forward, and remove the rear end of this inner pipe. A method of regenerating old pipes by applying axial compressive force to the pipes and moving them forward.
を注入して行う、 特許請求の範囲第１項記載の発明(2) The invention according to claim 1, wherein a rust preventive material is injected between the circumferential surfaces of the aging pipe and the inner pipe group.
の圧力流体を供給できるように構成してある、 特許請求の範囲第１項および第３項記載の発明(4) In order to inject fluid into the inner pipe, a blockage plug inserted into the rear part of the inner pipe is configured to be able to supply pressurized fluid from a pump, Claim 1 Inventions described in paragraphs and paragraphs 3
反力部材に固定した後、 内パイプの内部に圧力流体を注入して行う、特許請求の
範囲第１項および第３項記載の発明(5) The blocking plug inserted into the rear part of the inner pipe,
The invention according to claims 1 and 3, wherein the pressure fluid is injected into the inner pipe after it is fixed to the reaction member.
反力部材に固定し、 内パイプの内部に流体を注入し、 次に内パイプ内に流体を封入したまま、反力部材を伸長
させて行う、 特許請求の範囲第１項記載の発明(6) The blocking plug inserted into the rear part of the inner pipe,
The invention according to claim 1, wherein the reaction member is fixed to a reaction force member, fluid is injected into the inner pipe, and then the reaction member is extended while the fluid is sealed in the inner pipe.
に生じる引張力が増加した後に、内パイプの後部端に圧
縮力を与えて行う、 特許請求の範囲第１項記載の発明(7) The invention according to claim 1, wherein the compressive force is applied to the rear end of the inner pipe after the tensile force generated in the inner pipe increases due to the pressure fluid injected into the inner pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10431486A JPS62261792A (en) | 1986-05-07 | 1986-05-07 | Method of regenerating obsolete pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10431486A JPS62261792A (en) | 1986-05-07 | 1986-05-07 | Method of regenerating obsolete pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62261792A true JPS62261792A (en) | 1987-11-13 |
| JPH0330757B2 JPH0330757B2 (en) | 1991-05-01 |
Family
ID=14377467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10431486A Granted JPS62261792A (en) | 1986-05-07 | 1986-05-07 | Method of regenerating obsolete pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62261792A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63235782A (en) * | 1987-03-24 | 1988-09-30 | 大成建設株式会社 | Method and device for regenerating obsolete pipe |
| JP2007071258A (en) * | 2005-09-05 | 2007-03-22 | Taisei Corp | Reproduction method for old ramshackle pipe |
-
1986
- 1986-05-07 JP JP10431486A patent/JPS62261792A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63235782A (en) * | 1987-03-24 | 1988-09-30 | 大成建設株式会社 | Method and device for regenerating obsolete pipe |
| JP2007071258A (en) * | 2005-09-05 | 2007-03-22 | Taisei Corp | Reproduction method for old ramshackle pipe |
| JP4599254B2 (en) * | 2005-09-05 | 2010-12-15 | 大成建設株式会社 | How to regenerate old pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0330757B2 (en) | 1991-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5482404A (en) | Underground pipe replacement technique | |
| US10370967B2 (en) | Integrated jacking pipes | |
| KR102120676B1 (en) | Semi-Shield method propulsion pipe its watertight structure | |
| JPS62261792A (en) | Method of regenerating obsolete pipe | |
| JPH10238655A (en) | Method for piping pipe body making use of buoyancy | |
| JPH07122472B2 (en) | Remanufacturing method and equipment for old pipes | |
| JP2560198B2 (en) | Regeneration method of existing pipe | |
| JPH0340270B2 (en) | ||
| JPS6059031B2 (en) | Conduit lining method | |
| ITMI960742A1 (en) | METHOD FOR SEALING A FLANGED SLEEVE ON A PIPE | |
| JPH07107430B2 (en) | How to insert a small diameter tube | |
| US4796673A (en) | Reproduction process of the existing pipeline | |
| JP2001280540A (en) | Method of renewal of worn-out existing pipe | |
| JP3373000B2 (en) | How to regenerate aging pipes | |
| RU2339864C2 (en) | Repair method for predominantly extended unstraight pipeline | |
| JPH0154594B2 (en) | ||
| GB2088513A (en) | Pipe for use as part of a pipeline | |
| JP3736920B2 (en) | Screw joint type propulsion pipe and anticorrosion method for screw joint type propulsion pipe | |
| JP2001271591A (en) | Multi-function pipe for jacking and joint for multi- function pipe for jacking | |
| JP2002276285A (en) | Jacking pipe | |
| JP2892236B2 (en) | Water stop device for drilled casing | |
| JPS60220291A (en) | Repairing device for pipe joint of existing pipe | |
| JPS6110189A (en) | Underground buried duct repair device | |
| JPS60220294A (en) | Repairing device for pipe joint of existing pipe | |
| JPS58146783A (en) | Method of communicating connecting section of pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |