JP2004183760A - Constructive method of renewing conduit and jig for displacing the conduit - Google Patents

Constructive method of renewing conduit and jig for displacing the conduit Download PDF

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Publication number
JP2004183760A
JP2004183760A JP2002350575A JP2002350575A JP2004183760A JP 2004183760 A JP2004183760 A JP 2004183760A JP 2002350575 A JP2002350575 A JP 2002350575A JP 2002350575 A JP2002350575 A JP 2002350575A JP 2004183760 A JP2004183760 A JP 2004183760A
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Japan
Prior art keywords
pipe
hose
jig
conduit
new single
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JP2002350575A
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Japanese (ja)
Inventor
Takatoshi Ochi
孝敏 越智
Masahiko Kato
昌彦 加藤
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Kubota Corp
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Kubota Corp
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Priority to JP2002350575A priority Critical patent/JP2004183760A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To lay a new conduit on a service conduit through the pipe-jacking method without cutting off water, for example, in case an old conduit is retrofitted. <P>SOLUTION: The method comprises a water-tight fixing step of a plug device 1 including a hose 17 which extends to the downstream of a renewed section of the established conduit 2 on interior surface on upstream side of the renewed portion of the established conduit 2, a step in which a novel mono tube 10 with a diameter capable of being accommodated into the established conduit 2 is carried in from a manhole 21 provided downstream of the renewed section of the established conduit 2, at that time by temporally cutting off flowing water in the hose 17 and inserting through the hose 17 into the novel mono tube 10, a step of nextly reopening the flowing water in the hose 17 and propelling it to upstream side of the renewed section while flowing water and subsequently continuing to connect, and a step of connecting with the established conduit 2 required not to renew it in water-tight state and taking out in turn the hose 17 and the plug device 1. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
この発明は、下水道の管路を遮断することなく通水させたままで既設管内に新規管路を敷設していく管路の更新工法および該工法に使用される管移動用治具に関する。
【0002】
【従来の技術】
管路が老朽化するなどして新規管路に敷設替えする場合の工法として、既設管内に新規管を搬入し既設管内に新管を付設していくパイプインパイプ工法が知られている(非特許文献1)。
【0003】
この工法において、既設管路内に新規管を搬入し次いで管路に沿って搬送する場合、新規単管を運搬台車に載せて搬送することが行われる(特許文献1)。
ところで、この工法を実施する場合は通常であれば管路内の通水を遮断したうえで施工されるが、管路が下水道のような公共設備の場合は、長期間管路を遮断して工事を行うことは難しい。
【0004】
このため、下水管路の更新を行う場合は、バイパス管路を設け、上流で管路を遮断しポンプで下水を迂回させることや、あるいは止水することなく通水を続けた状態で作業員が下水に浸かって必要な工事を行うといったことを余儀なくされる場合がある。
【0005】
【非特許文献1】
久保田鉄工株式会社、昭和60年発行「ダクタイル管施工ハンドブック」第335頁
【0006】
【特許文献1】
特開平4−123973号公報
【0007】
【発明が解決しようとする課題】
しかし、バイパス管で下水を迂回させる方法は、ポンプの揚水能力を超えて下水流量が増えると、排水処理がしきれなくなり溢水事故を起こしたり、またポンプの増設などコスト増にもつながる問題があった。また、下水に浸かりながらの施工は、衛生上問題がある他、危険を伴う問題があった。
【0008】
この発明は、上記問題を解消し、既設管路が老朽化し更新する場合など、不断水で使用中の管路に新規管路を推進施工することを課題としてなされたものである。
【0009】
【課題を解決するための手段】
上記課題を達成するため請求項1の発明は、既設管路の更新される部分の上流側内面に、前記既設管路の更新される部分の下流部まで伸びるホースを接続した栓装置を水密に固定し、前記ホース内の通水を一時的に遮断することによって、その間に前記既設管路の更新される部分の下流部に設けたマンホールより、前記既設管路内に収納可能な外径の新規単管を搬入し、前記ホースを前記新規単管内に挿通し、次いで前記ホース内の通水を再開して通水しつつ更新部分の上流側へと推進して順次接続して行き、更新の必要のない下流側の既設管路と水密に接続し、次いで前記ホースならびに栓装置を管路内から取り出す工程よりなる工法である。
【0010】
従って、この工法によれば、更新すべき部分の管路上流部に設けた栓装置で一時的に通水を止め、新規単管を挿入した後は、その新規管内を通したホースを通じて下流へと通水できるので、断水することなく新規管の推進工法の実施が可能となる。
【0011】
請求項2の発明は、請求項1に記載の管路の更新工法において、新規単管内に着脱自在に装着される治具であって、管内面に沿う基枠の管内面側に、ホース外面に接触して管軸に直交する軸周囲に回転するローラが周方向と軸方向に複数個配列して設けられてなるものである。
【0012】
従って、この治具によれば、更新される既設管内に挿入された新規単管は、その内面とホース外面との間にローラが介在することになるので、新規単管を既設管内に沿って移動していく場合の抵抗が少なくなり、施工が容易となる。
【0013】
請求項3の発明は、請求項2の管路の更新工法における管移動用治具において、基枠の前縁に、ホースを掬い上げる傾斜面を有するブロックが、新規単管に対して軸方向へ張り出して設けられてなるものである。
【0014】
この場合、新規単管を移動させていくときに、ブロックがホース下面と既設管路内面との間に滑らかに食い込んで行くので、ホースが新規単管内に滑らかに案内されていき、抵抗が軽減される。
【0015】
請求項4の発明は、請求項2又は3の管路の更新工法における管移動用治具において、管移動用治具の基枠が新規単管の軸方向、周方向に分解可能とされてなるものである。
【0016】
ホースの重量が嵩むと、管移動用治具をホース下面から引き抜くのも容易でなくなるが、このように周方向、軸方向に分解可能とされていれば、小さく分解してホース下面から取り出せるので、作業が容易となる。
【0017】
請求項5の発明は、請求項2、3又は4の管路の更新工法における管移動用治具において、管移動用治具の周方向に隣接する基枠同士が、新規単管の内面に沿って自由に屈曲可能に連接されてなるものである。
【0018】
従って、この管移動用治具によれば、管の内径に合わせて周方向に隣接する基枠が屈曲するので、種々の径の管に対して使用可能となる。
【0019】
【発明の実施の形態】
次に、この発明の管路の更新工法について説明する。
図1、図2はこの発明の方法を実施する際の栓装置の説明断面図である。
【0020】
栓装置1は、既設管2内に余裕を持って挿入できる外径とされ、外周の横断面が凹字状に形成されたリング13の外周にチューブ14が設けられ、膨張させることで図2に示すように既設管2の内面と水密に密接するようにされている。
【0021】
そして、リング13の開口部分は隔壁15で閉じられ、この隔壁15の下流側に短管16が連通して一体に設けられ、この短管16に開閉弁16aが設けられている。
【0022】
この開閉弁16aの開口部16bに図2に示すようにホース17が連結可能とされ、操作ハンドル16cにより弁を開けばホース17を通じて下流側既設管2内に排水されるようにされている。
【0023】
次に、この発明の実施の形態である管路の更新工法における管移動用治具を説明する。
図3は、管移動用治具の中央断面図、図4は図3のA−A線断面図である。
【0024】
管移動用治具3は、図3に示すように新規単管10の軸方向に沿う基枠4の管内面側にローラ5…が回転自在に軸支されている。
このローラ5は、図4に示すように基枠4から径方向管内へ延出した軸受け部材5aに架設した回転軸5bにより回転自在に軸支されており、ローラ5の外周は軸受部材5aより管内方向へ突出するようにされている。
【0025】
また、管移動用治具3を構成する基枠4…は、図5に示すように新規単管10の軸方向および周方向に例えば6分割可能とされ、それぞれが接続金具6、7により着脱自在に接続されるようにされている。なお、図5において、基枠4はローラ5などと共にブロック状の省略図により示されている。
【0026】
また、基枠4は図4に示したように周方向に対して軸継手8…8により自由に屈曲可能とし、新規単管10の内面に沿うように屈曲させて湾曲させることにより、種々径の異なる管に対応できるようにすることもできる。
【0027】
また、基枠4の前後縁には、図3ならびに図6に拡大して示すように、新規単管10の開口端10aに着脱自在に嵌合する係合部材9、9が設けられている。この係合部材9は、基部9aが基枠4の端部にヒンジ軸9bにより回動自在に枢支され、矢印方向へ回動することにより開口端10a、10aにフック部9cがスナップ的に嵌合できるようにされている。
【0028】
また、管移動用治具3の前縁がわにおける基枠4には、テーパ状のブロック11が設けられており、後述するように既設管路2に沿って延在するホース17を基枠4上へと掬い上げやすくされている。
【0029】
また、上記基枠4の周方向の外側には、図7に示すようにホース17の幅方向側面を規制する案内ガイド棒12が立設されている。なお、この案内ガイド棒12は、基枠4端面に基部12aがボルト12bにより締結可能に取付けられ、ボルト12bを緩めることで角度調節可能に取り付けられ、径の異なる管に取り付けたとき、管内で垂直方向に立つように調整可能とされている。
【0030】
次に、管移動用治具3を用いて既設管路2内に新規単管10を挿入接続していく工法について説明する。
図8以下は、工程を説明する説明断面図である。
【0031】
まず、図8に示すように上流側のマンホール20から栓装置1を搬入し、更新すべき管路の上流部へ位置させる。
このとき、栓装置1のチューブ14は収縮させ、開閉弁16aは開にしておく。従って、外周チューブ14と既設管2内面との間には十分な隙間ができ、また開閉弁16a内は水wが自由に流通するので移動は楽に行える。
【0032】
目的の位置に栓装置1を設置すれば図9に示すように外部コンプレッサー(図示せず)を駆動してチューブ14を膨張させ、栓装置1を既設管2内に固定する。なお、この固定後は開閉弁16aを閉じる。
【0033】
そして、マンホール20から搬入したホース17を栓装置1から延出する短管16の開口部16bに接続する。
そして、ホース17を接続し終われば開閉弁16aを開き図9に示すように既設管路2内の上流側の水をホース17を通じて下流へと流す。
【0034】
次に、下流側マンホール21の上部開口を新規単管10を挿入できる大きさまで拡径し、図10に示すように新規単管10内面に管移動用治具3を係合部材9により取り付けて搬入する。
【0035】
開閉弁16aを閉じ、ホース17内を一時的に止水する。
そして、既設管路2内に搬入した新規単管10の内部に図10に示すようにホース17を引き通し、完全に引き通せば、再び開閉弁16aを開き通水する。
【0036】
このとき、ホース17の内部通水の重量が新規単管10に加わるが、新規単管10内面にはローラ5…を有する基枠4が設けられているので、このローラ5によって摩擦が軽減され、管外面に取り付けた移動台車又は車輪19によって新規単管10の既設管路2内に沿った移動が容易になる。
【0037】
そして、このようにして搬入された新規単管10を上流側から順次接続して行くが、接続に際し、管移動用治具3を図5に示したように分割構造とした場合、分割面まで治具3を引き出す毎に接続金具6、7部分で分割して取り出せるので狭い管内での作業が容易となる他、大径管の接続でホース17の径が大きくバイパスされる水量も大量になる場合の治具3の抜き出し作業も容易となる。
【0038】
そして、台車ないしは車輪19、および基枠4を外し既設管路2内に新規単管10を接続し更新管路を敷設するのである。
従って、新規単管10…を搬入し接続するまでの移動は容易に行え、施工が容易になる。
【0039】
基枠4の前縁側にテーパ状のブロック5を設けた場合、管の移動時ホース17が、基枠4のロール3…上に滑らかに案内されるので、ホースが新規単管10端部に引っかかるのが防止され、容易に移動が出来るのである。
【0040】
また、基枠4…を軸方向、周方向に分解可能にした場合、新規単管を接続し、管移動用治具をホース17下面から取り出す場合、分解しつつ取り出せるので一気に全体を取り出す場合に比べて労力が少なくて済む。
【0041】
さらに、基枠4を周方向に屈曲可能に連接すれば一台の管移動用治具であっても、各種内径の管に対して使用可能となり経済的な使用が可能となる。
そして、新規単管10による新規管路の敷設後は、開閉弁16aを締めて一時的に止水後、ホース17を短管16から取り外し、マンホール20から取り出し、次いでチューブ14を収縮させて栓装置1をマンホール20から外部へと取り出す。
【0042】
これで一連の管路更新作業が終了する。
上記工法として、一時的な止水を栓装置1に設けた開閉弁16aを締める場合について説明したが、図11に示すようにホース17の末端部分に開閉弁16aを設け、この部分での開閉を行うことで一時的な止水、通水を実施するようにしても良い。
【0043】
この場合は、ホースの上流位置で止水する場合に比べて、ホース内の水が完全に排出され終わるまで待つことなく、止水後直ちに水の排出が止まるので、作業が迅速に行える利点がある。
【0044】
【発明の効果】
この発明の方法によれば、以上説明したように、既設管路の中に更新管を敷設する場合、通水したまま、しかも水に浸かることなく作業も可能となるので、断水することなく安全に管の更新が可能となる。
【図面の簡単な説明】
【図1】この発明の方法を実施する際の栓装置の説明断面図であり、チューブを収縮させた状態を示す。
【図2】この発明の方法を実施する際の栓装置の説明断面図であり、チューブを膨張させた状態を示す。
【図3】この発明の実施の形態である管移動用治具の説明断面図である。
【図4】図3のA−A線断面図である。
【図5】管移動用治具の他の構成例を示す説明斜視図である。
【図6】管移動用治具の拡大断面図である。
【図7】管移動用治具におけるガイド棒の説明図である。
【図8】この発明の方法を説明する断面図である。
【図9】この発明の方法におけるホースを接続した状態を示す断面図である。
【図10】この発明の方法における新規単管を搬入していく状態を示す断面図である。
【図11】この発明の方法の他の構成例を示す説明断面図である。
【符号の説明】
1 栓装置
2 既設管路
3 管移動用治具
4 基枠
5 ローラ
10 新規単管
11 テーパ状ブロック
12 ガイド棒
20 上流側マンホール
21 下流側マンホール
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pipe renewal method for laying a new pipe in an existing pipe while keeping water flowing without interrupting a pipe of a sewer, and a pipe moving jig used in the method.
[0002]
[Prior art]
A pipe-in-pipe method is known in which pipes are replaced with new ones due to aging, etc., where new pipes are loaded into existing pipes and new pipes are added to existing pipes (non- Patent Document 1).
[0003]
In this method, when a new pipe is carried into an existing pipeline and then transported along the pipeline, a new single pipe is mounted on a transport carriage and transported (Patent Document 1).
By the way, when this method is implemented, it is usually done after shutting off the water flow in the pipeline, but if the pipeline is a public facility such as sewer, shut off the pipeline for a long time. It is difficult to do construction.
[0004]
For this reason, when renewing the sewer pipeline, provide a bypass pipeline, shut off the pipeline at the upstream and bypass the sewer with a pump, or May be forced to immerse in sewage and perform necessary construction.
[0005]
[Non-patent document 1]
Kubota Iron Works Co., Ltd., published in 1985, "Ductile Pipe Construction Handbook", page 335 [0006]
[Patent Document 1]
JP-A-4-123973
[Problems to be solved by the invention]
However, the method of bypassing the sewage by the bypass pipe has a problem that if the sewage flow rate exceeds the pumping capacity of the pump, the drainage treatment cannot be completed and an overflow accident will occur, and the cost will increase due to additional pumps. Was. In addition, the construction while immersed in the sewage has a problem with hygiene and a danger.
[0008]
SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to promote and construct a new pipeline in a pipeline that is being used without interruption when the existing pipeline is deteriorated and renewed.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is to provide a watertight sealing plug device in which a hose extending to a downstream portion of the renewed part of the existing pipeline is connected to an inner surface on an upstream side of a renewed portion of the existing pipeline. By fixing and temporarily blocking water flow in the hose, a manhole provided in the downstream of a portion to be renewed of the existing pipeline during that time has an outer diameter that can be stored in the existing pipeline. A new single pipe is carried in, the hose is inserted into the new single pipe, and then the flow of water in the hose is restarted, and while the water is passed, it is propelled to the upstream side of the renewal portion and sequentially connected to renew. This is a method of watertight connection with an existing pipeline on the downstream side that does not require the above, and then taking out the hose and the plug device from the pipeline.
[0010]
Therefore, according to this method, water supply is temporarily stopped by the plug device provided in the upstream part of the pipe to be renewed, and after inserting a new single pipe, the water is passed downstream through the hose passing through the new pipe. It is possible to implement a new pipe propulsion method without breaking water.
[0011]
According to a second aspect of the present invention, in the method for renewing a pipeline according to the first aspect, a jig detachably mounted in the new single pipe, wherein a hose outer surface is provided on a pipe inner surface side of a base frame along the pipe inner surface. And a plurality of rollers that rotate around the axis perpendicular to the tube axis in contact with the pipe are arranged in the circumferential direction and the axial direction.
[0012]
Therefore, according to this jig, the new single pipe inserted into the existing pipe to be renewed has rollers interposed between its inner surface and the outer surface of the hose, so that the new single pipe is inserted along the existing pipe. Resistance when moving is reduced, and construction is facilitated.
[0013]
According to a third aspect of the present invention, in the pipe moving jig in the pipe line renewal method of the second aspect, a block having an inclined surface for scooping up a hose at a front edge of a base frame is provided in an axial direction with respect to a new single pipe. It is provided overhanging.
[0014]
In this case, when moving the new single pipe, the block smoothly penetrates between the lower surface of the hose and the inner surface of the existing pipeline, so the hose is smoothly guided into the new single pipe, reducing resistance. Is done.
[0015]
According to a fourth aspect of the present invention, in the pipe moving jig according to the second or third embodiment, the base frame of the pipe moving jig can be disassembled in the axial direction and the circumferential direction of the new single pipe. It becomes.
[0016]
When the weight of the hose increases, it is not easy to pull out the tube moving jig from the lower surface of the hose.However, if the hose can be disassembled in the circumferential and axial directions, it can be disassembled into smaller pieces and taken out from the lower surface of the hose. , Work becomes easier.
[0017]
According to a fifth aspect of the present invention, in the pipe moving jig in the pipe line updating method according to the second, third or fourth aspect, the base frames adjacent to each other in the circumferential direction of the pipe moving jig are provided on the inner surface of the new single pipe. It is connected so that it can freely bend along.
[0018]
Therefore, according to the pipe moving jig, the adjacent base frames in the circumferential direction are bent in accordance with the inner diameter of the pipe, so that the jig can be used for pipes of various diameters.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, a description will be given of a pipe renewal method according to the present invention.
1 and 2 are explanatory sectional views of a plug device when the method of the present invention is carried out.
[0020]
The stopper device 1 has an outer diameter capable of being inserted into the existing pipe 2 with a margin, and a tube 14 is provided on the outer periphery of a ring 13 having an outer peripheral cross section formed in a concave shape. As shown in FIG. 1, the inner surface of the existing pipe 2 is in water-tight contact.
[0021]
The opening of the ring 13 is closed by a partition wall 15, and a short pipe 16 communicates with the downstream side of the partition wall 15 and is provided integrally therewith. An open / close valve 16 a is provided on the short pipe 16.
[0022]
As shown in FIG. 2, a hose 17 can be connected to the opening 16b of the opening / closing valve 16a. When the valve is opened by the operation handle 16c, the hose 17 is drained through the hose 17 into the existing pipe 2 on the downstream side.
[0023]
Next, a pipe moving jig in a pipe line renewal method according to an embodiment of the present invention will be described.
FIG. 3 is a central sectional view of the pipe moving jig, and FIG. 4 is a sectional view taken along line AA of FIG.
[0024]
As shown in FIG. 3, the pipe moving jig 3 has rollers 5... Rotatably supported on the inner surface of the base frame 4 along the axial direction of the new single pipe 10.
The roller 5 is rotatably supported by a rotating shaft 5b provided on a bearing member 5a extending from the base frame 4 into the pipe in the radial direction as shown in FIG. 4, and the outer periphery of the roller 5 is provided by a bearing member 5a. It is designed to protrude in the tube direction.
[0025]
The base frames 4 constituting the pipe moving jig 3 can be divided into, for example, six in the axial direction and the circumferential direction of the new single pipe 10 as shown in FIG. It is designed to be freely connected. In FIG. 5, the base frame 4 is shown together with the rollers 5 and the like by a block-like abbreviated drawing.
[0026]
The base frame 4 can be freely bent in the circumferential direction by the shaft couplings 8... 8 as shown in FIG. 4, and can be bent and bent along the inner surface of the new single pipe 10 to have various diameters. It can be adapted to accommodate different tubes.
[0027]
In addition, on the front and rear edges of the base frame 4, as shown in FIGS. 3 and 6 in an enlarged manner, engaging members 9, 9 which are detachably fitted to the opening end 10 a of the new single tube 10 are provided. . The base 9a of the engaging member 9 is rotatably supported by the hinge shaft 9b at the end of the base frame 4, and the hook 9c is snapped to the open ends 10a and 10a by rotating in the direction of the arrow. It is designed to fit.
[0028]
Further, a tapered block 11 is provided on the base frame 4 at the front edge of the pipe moving jig 3, and a hose 17 extending along the existing pipeline 2 is provided as described below. 4. Easy to scoop up.
[0029]
On the outer side of the base frame 4 in the circumferential direction, a guide guide rod 12 for regulating the side surface in the width direction of the hose 17 is provided upright as shown in FIG. The guide guide rod 12 has a base 12a attached to the end face of the base frame 4 so as to be fastened by bolts 12b, and is attached so as to be able to adjust the angle by loosening the bolts 12b. It can be adjusted to stand vertically.
[0030]
Next, a method of inserting and connecting a new single pipe 10 into the existing pipe line 2 using the pipe moving jig 3 will be described.
FIG. 8 et seq. Are explanatory cross-sectional views illustrating the steps.
[0031]
First, as shown in FIG. 8, the plug device 1 is carried in from the manhole 20 on the upstream side, and is located at the upstream portion of the pipeline to be updated.
At this time, the tube 14 of the plug device 1 is contracted, and the on-off valve 16a is opened. Therefore, a sufficient gap is formed between the outer peripheral tube 14 and the inner surface of the existing pipe 2, and the water w can freely flow in the on-off valve 16a, so that the movement can be easily performed.
[0032]
When the plug device 1 is installed at a target position, an external compressor (not shown) is driven to expand the tube 14 and fix the plug device 1 in the existing pipe 2 as shown in FIG. After the fixing, the on-off valve 16a is closed.
[0033]
Then, the hose 17 carried from the manhole 20 is connected to the opening 16 b of the short pipe 16 extending from the plug device 1.
Then, when the hose 17 is connected, the on-off valve 16a is opened, and the water on the upstream side in the existing pipeline 2 flows downstream through the hose 17 as shown in FIG.
[0034]
Next, the diameter of the upper opening of the downstream manhole 21 is increased to a size in which the new single pipe 10 can be inserted, and the pipe moving jig 3 is attached to the inner surface of the new single pipe 10 by the engaging member 9 as shown in FIG. Bring in.
[0035]
The on-off valve 16a is closed, and the inside of the hose 17 is temporarily stopped.
Then, as shown in FIG. 10, the hose 17 is drawn through the new single pipe 10 carried into the existing pipeline 2, and when completely drawn, the on-off valve 16a is opened again to flow water.
[0036]
At this time, the weight of the water passing through the hose 17 is added to the new single pipe 10, but since the base frame 4 having the rollers 5 is provided on the inner surface of the new single pipe 10, the friction is reduced by the rollers 5. The movement of the new single pipe 10 along the existing pipeline 2 is facilitated by the movable cart or wheels 19 attached to the outer surface of the pipe.
[0037]
Then, the new single pipes 10 carried in this way are sequentially connected from the upstream side. When connecting the pipes, the pipe moving jig 3 has a divided structure as shown in FIG. Each time the jig 3 is pulled out, it can be divided and taken out at the connection fittings 6 and 7 so that work in a narrow pipe becomes easy. In addition, the diameter of the hose 17 is large due to the connection of a large-diameter pipe, and a large amount of water is bypassed. In this case, the jig 3 can be easily extracted.
[0038]
Then, the truck or wheels 19 and the base frame 4 are removed, a new single pipe 10 is connected to the existing pipeline 2, and an update pipeline is laid.
Therefore, the movement from the loading of the new single pipes 10 to the connection thereof can be easily performed, and the construction becomes easy.
[0039]
When the tapered block 5 is provided on the front edge side of the base frame 4, the hose 17 is smoothly guided on the rolls 3... Of the base frame 4 when the pipe is moved. It is prevented from getting stuck and can be easily moved.
[0040]
When the base frame 4 can be disassembled in the axial direction and the circumferential direction, when a new single pipe is connected and the pipe moving jig is taken out from the lower surface of the hose 17, it can be taken out while being disassembled. Less effort is required.
[0041]
Furthermore, if the base frame 4 is connected so as to be able to bend in the circumferential direction, even a single pipe moving jig can be used for pipes of various inner diameters, and can be used economically.
After the new pipe is laid with the new single pipe 10, the on-off valve 16a is closed and the water is temporarily stopped. Then, the hose 17 is detached from the short pipe 16, taken out of the manhole 20, and then the tube 14 is contracted to close the plug. The device 1 is taken out of the manhole 20 to the outside.
[0042]
This completes a series of pipeline update operations.
As the above-mentioned method, the case where the on-off valve 16a provided on the plug device 1 is temporarily stopped is described, but the on-off valve 16a is provided at the end of the hose 17 as shown in FIG. May be performed to temporarily stop and pass water.
[0043]
In this case, compared to the case where the water is stopped at the upstream position of the hose, the drainage of the water stops immediately after the water is stopped without waiting until the water in the hose is completely drained. is there.
[0044]
【The invention's effect】
According to the method of the present invention, as described above, when laying a renewal pipe in an existing pipeline, work can be performed while water is flowing and without being immersed in water. The pipe can be renewed.
[Brief description of the drawings]
FIG. 1 is an explanatory sectional view of a stopper device when a method of the present invention is carried out, showing a state where a tube is contracted.
FIG. 2 is an explanatory cross-sectional view of the plug device when the method of the present invention is carried out, showing a state where the tube is expanded.
FIG. 3 is an explanatory sectional view of a pipe moving jig according to an embodiment of the present invention.
FIG. 4 is a sectional view taken along line AA of FIG. 3;
FIG. 5 is an explanatory perspective view showing another configuration example of the pipe moving jig.
FIG. 6 is an enlarged sectional view of a pipe moving jig.
FIG. 7 is an explanatory view of a guide rod in the pipe moving jig.
FIG. 8 is a sectional view illustrating the method of the present invention.
FIG. 9 is a cross-sectional view showing a state where a hose is connected in the method of the present invention.
FIG. 10 is a cross-sectional view showing a state in which a new single pipe is carried in in the method of the present invention.
FIG. 11 is an explanatory sectional view showing another configuration example of the method of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Plug device 2 Existing pipeline 3 Pipe moving jig 4 Base frame 5 Roller 10 New single pipe 11 Tapered block 12 Guide rod 20 Upstream manhole 21 Downstream manhole

Claims (5)

既設管路の更新される部分の上流側内面に、前記既設管路の更新される部分の下流部まで伸びるホースを接続した栓装置を水密に固定し、前記ホース内の通水を一時的に遮断することによって、その間に前記既設管路の更新される部分の下流部に設けたマンホールより、前記既設管路内に収納可能な外径の新規単管を搬入し、前記ホースを前記新規単管内に挿通し、次いで前記ホース内の通水を再開して通水しつつ更新部分の上流側へと推進して順次接続して行き、更新の必要のない下流側の既設管路と水密に接続し、次いで前記ホースならびに栓装置を管路内から取り出す工程よりなる管路の更新工法。On the inner surface on the upstream side of the portion to be renewed of the existing pipeline, a plug device connected to a hose extending to the downstream portion of the portion to be renewed of the existing pipeline is fixed in a watertight manner, and the flow of water in the hose is temporarily stopped. By shutting off, a new single pipe having an outer diameter that can be accommodated in the existing pipeline is carried in from a manhole provided at a downstream portion of a portion of the existing pipeline to be updated, and the hose is connected to the new single pipe. The pipe is inserted into the pipe, and then the water flow in the hose is restarted and the water is re-poured while being propelled to the upstream side of the renewal part and sequentially connected, in a watertight manner with the existing pipe line on the downstream side that does not require renewal. A method for renewing a pipeline, comprising connecting and then removing the hose and the plug device from the pipeline. 請求項1に記載の管路の更新工法において、新規単管内に着脱自在に装着される治具であって、管内面に沿う基枠の管内面側に、ホース外面に接触して、管軸に直交する軸周囲に回転するローラが周方向と軸方向に複数個配列して設けられてなる管路の更新工法における管移動用治具。2. A method for renewing a pipeline according to claim 1, wherein the jig is detachably mounted in the new single pipe. A jig for moving a pipe in a pipe line renewal method comprising a plurality of rollers rotating around an axis orthogonal to the axis and arranged in a circumferential direction and an axial direction. 請求項2の管路の更新工法における管移動用治具において、基枠の前縁に、ホースを掬い上げる傾斜面を有するブロックが、新規単管に対して軸方向へ張り出して設けられてなる管路の更新工法における管移動用治具。The pipe moving jig in the pipe line renewal method according to claim 2, wherein a block having an inclined surface for scooping up a hose is provided on the front edge of the base frame so as to project in the axial direction with respect to the new single pipe. A jig for moving pipes in a pipe renewal method. 請求項2又は3の管路の更新工法における管移動用治具において、管移動用治具の基枠が新規単管の軸方向、周方向に分解可能とされてなる管移動用治具。The pipe moving jig according to claim 2 or 3, wherein the base frame of the pipe moving jig can be disassembled in the axial direction and the circumferential direction of the new single pipe. 請求項2、3又は4の管路の更新工法における管移動用治具において、管移動用治具の周方向に隣接する基枠同士が、新規単管の内面に沿って自由に屈曲可能に連接されてなる管移動用治具。The pipe moving jig according to claim 2, 3 or 4, wherein the base frames adjacent to each other in the circumferential direction of the pipe moving jig can be freely bent along the inner surface of the new single pipe. A pipe moving jig that is connected.
JP2002350575A 2002-12-03 2002-12-03 Constructive method of renewing conduit and jig for displacing the conduit Pending JP2004183760A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013117235A (en) * 2011-12-01 2013-06-13 Ashimori Industry Co Ltd Method for repairing pipe line
JP2013245463A (en) * 2012-05-25 2013-12-09 Shonan Plastic Mfg Co Ltd Renovation method of existing pipe
JP2015010373A (en) * 2013-06-28 2015-01-19 株式会社湘南合成樹脂製作所 Regeneration method of existing pipe
JP2017210841A (en) * 2016-05-27 2017-11-30 明石セミシールド建設株式会社 Method and structure for regenerating existing pipe
KR102405108B1 (en) * 2021-07-14 2022-06-07 (주)에코인프라 Folding water turn system for pipeline repair and survey
KR102495695B1 (en) * 2022-05-09 2023-02-06 박대용 Sewage pipe non-excavation partial repair and monitoring system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013117235A (en) * 2011-12-01 2013-06-13 Ashimori Industry Co Ltd Method for repairing pipe line
JP2013245463A (en) * 2012-05-25 2013-12-09 Shonan Plastic Mfg Co Ltd Renovation method of existing pipe
JP2015010373A (en) * 2013-06-28 2015-01-19 株式会社湘南合成樹脂製作所 Regeneration method of existing pipe
JP2017210841A (en) * 2016-05-27 2017-11-30 明石セミシールド建設株式会社 Method and structure for regenerating existing pipe
KR102405108B1 (en) * 2021-07-14 2022-06-07 (주)에코인프라 Folding water turn system for pipeline repair and survey
KR102495695B1 (en) * 2022-05-09 2023-02-06 박대용 Sewage pipe non-excavation partial repair and monitoring system

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