JP4932581B2 - Perforated part sealing method for existing pipes to be lined and perforated part sealing structure - Google Patents

Description

  The present invention relates to a perforated portion sealing processing method and a perforated portion sealing processing structure for existing piping (lined existing piping) subjected to lining processing by a lining reversal sealing method or the like.

  Known methods for lining existing pipes include a method of lining a sealing material on the inner surface of the pipe, a method of forming a resin film on the inner surface of the pipe, and the like. In particular, the lining reversal sealing method is a method of lining the hose-shaped sealing material sequentially from one end side to the other end side of the tube while inverting the adhesive surface to the inner surface from the inside to the outside. It is widely used for rehabilitation and repair of aging pipes, repairs for earthquake countermeasures, etc., because of its advantages such as durability, high durability, and airtightness maintenance at the time of pipe breakage.

  A perforated part may be formed for the purpose of connecting a branching part to the existing piping subjected to such a lining treatment. In this case, the lining layer formed on the inner surface of the pipe together with the pipe wall is perforated. However, if a fluid is allowed to flow through the pipe by connecting a branch joint or the like to the perforated part, the perforated portion of the lining layer is peeled off from the inner surface of the pipe. In some cases, fluid may leak between the lining layer and the inner surface of the pipe. It is desirable that the inner surface of the pipe and the lining layer are completely in close contact with each other. However, if there is a poorly bonded part between the inner surface of the pipe and the lining layer, this poorly bonded part becomes a leakage path and the poorly sealed part of the pipe This leads to a problem that leakage to the outside of the tube occurs.

Such a leakage phenomenon due to the perforation of the lining layer makes it extremely difficult to specify the leakage location to the outside of the tube, so that the fluid leaks from the perforation location of the lining layer between the lining layer and the inner surface of the tube. There is no effective solution other than prevention. As a specific solution, a pressing member that presses the periphery of the perforated portion of the lining layer against the inner surface of the tube is attached to the perforated portion of the tube from the inside of the tube (Patent Document 1, below). 2).
JP-A-7-248092 JP-A-6-235493

  In order to perform the sealing process for the perforated portion in the existing line to be lined by the above-described conventional technique, the above-described pressing member needs to be disposed inside the pipe line, and thus such a sealing process is performed. The pipeline that can be opened must be an open pipeline.

  However, the drilling of the existing pipeline is not always performed with the pipeline open. For example, the drilling operation when connecting a branch joint to a gas pipeline is performed with the gas flowing in the pipeline (active tube status), and the gas supply to the downstream side is shut off even during the operation. I'm trying not to be. For this purpose, a no-blow operation for preventing gas ejection from the perforation part is performed, and a perforated part is installed in a no-blow work bag attached to the perforator support member by attaching the perforator support member to the outer periphery of the pipeline. An airtight space is formed in the surroundings, and an operation for operating the drilling machine is performed in the airtight space.

  Since the above-described prior art is to open the pipe once and attach the pressing member to the perforated part from the inside of the pipe, it can be applied to the perforated part formed in the pipe in the live pipe state. Can not.

  The present invention has been proposed to deal with such a situation. In other words, the sealing process for the perforated part in the existing lined lining can be performed in an active pipe state, and leakage through the perforated part of the lining layer is avoided by performing a reliable sealing process on the perforated part. It is an object of the present invention to be able to perform a series of operations from the perforation of the pipeline to the sealing process of the perforated portion in a state in which fluid supply to the downstream side of the pipeline is ensured.

  In order to achieve the above-described object, the present invention includes at least the following features.

  That is, a method for sealing a pipe and a perforated portion of a lining layer for a pipe to be lined with a lining layer formed on the inner surface of the pipe, which can be inserted into the pipe from outside the pipe via the perforated part. A resin receiving member installation step for installing a resin receiving member that expands in diameter after the insertion and forms a resin-filled space in and around the inside of the perforated part so as to face at least the inside of the perforated part pipe; and the resin And a resin filling step of filling the filling space with resin and covering the entire periphery of the end of the perforated part with the resin.

  Alternatively, the pipe and the piercing portion of the lining layer are sealed for the existing pipe to be lined with a lining layer formed on the inner surface of the pipe, and can be inserted into the pipe from the outside of the pipe through the perforation portion. A resin receiving member that expands in diameter after the insertion and forms a resin-filled space around and inside the perforated portion is installed so as to face at least the perimeter of the perforated portion tube, and the resin-filled space is filled with resin. The entire circumference of the end of the perforated part is covered with the resin in an airtight manner.

  With this feature, the resin receiving member is inserted into the pipe from the outside of the pipe through the perforated part formed in the existing lined lining, using the no-blow method adopted when drilling the existing pipe. Therefore, the perforated portion can be sealed in the live pipe state without opening the pipe line. Further, by covering the entire periphery of the end of the perforated part with resin, a reliable sealing process can be performed on the perforated part, and leakage of the pipeline through the perforated part of the lining layer can be avoided. Furthermore, a series of operations from the perforation of the pipe line to the sealing process of the perforated part can be performed in a state where the fluid supply to the downstream side of the pipe line is ensured.

  The embodiment of the present invention is intended for existing piping that has been subjected to a lining treatment. In the following explanation, a case where a seal hose is lined on the inner surface of the pipe will be described as an example, but as the lining process, a process in which a lining layer is formed on the inner surface of the pipe by a lining reverse sealing method, a resin lining method, or the like. Any process may be used.

  And after piercing such existing pipes to be lined, or with respect to the pipe line in which the pierced part has been formed in advance, the lining in the pierced part of the pipe and the lining layer is maintained while maintaining the live pipe state of the pipe line. Sealing treatment is performed so that the fluid in the tube does not leak between the layer and the tube. In this sealing process, at least a resin receiving member that can be inserted into the pipe from the outside of the pipe through the perforated part and expands in diameter after the insertion to form a resin-filled space around and inside the pipe of the perforated part is provided at least inside the perforated part pipe. The main steps are a process of installing the resin so as to face the periphery (resin receiving member installation process) and a process of filling the resin filling space with resin and covering the entire periphery of the perforated part with resin (resin filling process). Process.

  According to this, the resin receiving member is inserted into the pipe from the outside of the pipe through the perforated portion by using the resin receiving member that expands the diameter after being inserted into the pipe and forms a resin-filled space around and inside the perforated portion of the pipe. Therefore, it is not necessary to previously insert a resin receiving member required for airtightly covering the entire circumference of the end of the perforated part with resin. Therefore, by using a process using an existing no-blow work bag in combination, the sealing process can be performed while maintaining the live pipe state with respect to the perforated portion of the existing pipe for lining.

  FIGS. 1-5 is explanatory drawing which shows the perforation part sealing processing construction method and sealing processing structure of the existing piping for lining which concerns on one Embodiment of this invention, FIG. 1 is description explaining the resin receiving member installation process. FIG.

  In this embodiment, for example, a split connection split sleeve S is attached to the outer periphery of a pipe line P lined with a seal hose P1 as a lining layer. A no-blow working bag SNB is attached to the outer periphery of the branch connection portion S1 of the split connection split sleeve S. The split connection split sleeve S is attached to the pipe P by tying up and down divided parts to the pipe P and connecting them with fasteners (bolts and nuts) S3. A seal ring S2 is in close contact with the outer periphery, and an airtight space from the branch connection portion S1 provided in the upper divided body to the perforated portion is formed inside the seal ring S2.

  For perforating the pipe P and the seal hose P1, a perforator is attached to the branch connection portion S1 of the split connection split sleeve S, and the perforation portion P2 is formed through the branch connection portion S1 by the work in the no-blow work bag SNB. The Subsequently, a resin receiving member installation step is performed by work in the no-blow work bag SNB.

  In this embodiment, an elastically deformable resin receiving member 1 made of rubber or the like is used. As the resin receiving member installation step, first, as shown in FIG. 1 (a), the tip of the support member 2 provided with a support portion 20 that can be opened and closed at the tip is inserted into the tube through the perforated portion P2 and supported. The part 20 is opened, and then the resin receiving member 1 is inserted into the pipe through the perforated part P2 in a state where the diameter of the resin receiving member 1 is reduced. And the support member 2 is supported outside a pipe | tube and the resin receiving member 1 is supported on the support part 20 of the support member 2 located in a pipe | tube.

  Next, as shown in FIG. 1 (b), the support member 2 is pulled up, and the outer end portion of the resin receiving member 1 is pressed against the inner periphery of the perforated portion P2 by the support portion 20. A resin filling space is formed inside. Then, as shown in FIG. 1 (c), the support member 2 is branched using the support member fixing jig 3 so that the state in which the above-described resin filling space is formed is maintained. It fixes to connection part S1.

  FIG. 2 is an explanatory view showing a specific example of the support member 2 described above, in which FIG. 2 (a) is a front view seen from the axial direction of the pipeline when in use, and FIG. 2 (b) is a pipeline when in use. It is the side view seen from the side. The support member 2 has a support portion 20 attached to the tip of the handle portion 21 so as to be openable and closable, and includes an open / close holding mechanism that holds the support portion 20 in an open state or a closed state.

  The support portion 20 includes a plurality of support rods 20a to 20c that are held radially in an open state, and each support rod is disposed along the tube axis, and includes a linear support rod 20a and a tube shaft. The support rod 20b is curved at a curvature corresponding to the inner diameter of the tube, and is disposed at an intermediate position between the support rod 20a and the support rod 20b. The support rod 20b has a slightly gentler curvature than the support rod 20b. The support rod 20c is curved, and the outer end of the resin receiving member 1 can be brought into close contact with the inner surface of the tube according to the curvature of the perforated portion P2 in the tube.

  As an opening / closing holding mechanism of the support portion 20, an outer cylinder member 22 that is slidable along the handle portion 21 is provided, and the inner end portions of the support rods 20 a to 20 c described above are pivotally supported around the distal end portion of the outer cylinder member 22. The outer end portions of the support rods 20a to 20c are pivotally supported on the outer end portions of the standing rods 20a1 to 20c1 whose inner end portions are pivotally supported around the tip portion of the handle portion 21.

  By sliding the outer cylinder member 22 toward the tip of the handle portion 21 by such a mechanism, the support rods 20a to 20c are opened, and the open state is held by the holding member 21A that can be moved in and out of the handle portion 21. Retained. Further, by holding the holding member 21A in the handle portion 21 and sliding the outer cylindrical member 22 to the proximal end side of the handle portion 21, as shown by the wavy line in FIG. It will be in the state closed along the part 21. FIG.

  By using the support member 2 having such a structure, the support portion 20 is closed, and the tip of the support member 2 is inserted into the pipe through the perforated portion P2, and then the support portion 20 is held in the open state. Thus, the support rods 20a to 20c can be spread around the inside of the perforated part P2. Moreover, the support part 20 provided in the front-end | tip of the support member 2 can be arrange | positioned in a pipe | tube, and the base end side of the support member 2 can be fixed outside a pipe | tube.

  FIG. 3 is an explanatory view showing a specific example of the resin receiving member 1 described above, in which FIG. 3 (a) is a plan view and FIG. 3 (b) is an XX cross-sectional view. The resin receiving member 1 includes a cylindrical portion 1a that opens the perforated portion P2, and an overhang receiving portion 1b that projects vertically from one end (the lower end in the drawing) of the cylindrical portion 1a and faces the inner periphery of the perforated portion P2. Is integrally formed of a rubber member that can be elastically deformed. A bank portion 1c is formed at the outer end portion of the overhang receiving portion 1b to form a resin-filled space. The bank portion 1c has a rubber ring layer 1c1 laminated to form an outer edge and an inner side thereof. It is formed by the provided sponge ring 1c2.

  According to the resin receiving member 1 having such a structure, the overhang receiving portion 1b is disposed on the support portion 20 of the support member 2 and the support member 2 is pulled up so that the bank portion 1c of the resin receiving member 1 is the perforated portion P2. Thus, a resin-filled space is formed inside the bank portion 1c or outside the tubular portion 1a. When the bank portion 1c is brought into close contact with the inner periphery of the perforated portion P2, the bank portion 1c presses the seal hose P1 against the inner surface of the pipe P, and the peeled portion of the seal hose P1 in the perforated portion P2 is the resin-filled space described above. You will face inside. Moreover, the inside of the cylindrical part 1a is opened in the pipe, and the inside of the pipe and the branch connection part S1 of the split sleeve S for branch connection communicate with each other through the inside of the cylindrical part 1a.

  FIG. 4 is an explanatory view showing a specific example of the above-described support member fixing jig 3 (FIG. 4A is a side view, and FIG. 4B is a YY sectional view). The support member fixing jig 3 includes a fixing portion 3A to the branch connection portion S1 of the split connection split sleeve S, a support member insertion portion 3B, and a plug (rubber member) 3C in the cylindrical portion 1a. As shown in FIG. 1 (c), the handle portion 21 of the support member 2 is passed through the support member insertion portion 3B, the screw portion 3A1 of the fixing portion 3A is screwed to the screw portion of the branch connection portion S1, and the top portion 3A1 is It fixes so that it may contact | abut on the top part of branch connection part S1. At that time, the plug 3C is adapted to fit into the cylindrical portion 1a. Further, a threaded portion is formed on the outer periphery of the outer cylindrical member 22 of the supporting member 2 inserted into the supporting member insertion portion 3B, and the supporting member 2 is supported by the fixing portion 3A by a fixing nut screwed there.・ It will be fixed.

  FIG. 5 is an explanatory diagram for explaining a resin filling step performed subsequent to the above-described resin receiving member installation step and a subsequent processing step. The support member 2 is supported and fixed to the branch connection portion S1 so that the bank portion 1c of the resin receiving member 1 is pressed around the inside of the pipe of the perforated portion P2, and then the no-blow work bag SNB is removed from the branch connection portion S1. Then, the resin injection nozzle 4 is directed toward the resin filling space formed inside and inside the perforated part P2, and the resin filling space is filled with resin (FIG. 1A).

  At this time, the peeled portion of the seal hose P1 in the resin filling space is completely covered with the resin to be filled. Moreover, since the inside of the pipe | tube of the perforated part P2 and the circumference | surroundings outside a pipe | tube are covered with the resin with which it fills, the leak phenomenon in the perforated part P2 can be prevented reliably.

  Thereafter, after curing and curing the resin, the no-blow work bag SNB is attached to the branch connection portion S1 again, the support member fixing jig 3 is removed, the support portion 20 of the support member 2 is closed, and the support member 2 is removed from the tube. (Figure (b)). Furthermore, if necessary, the temporary plug 5 is attached to the branch connection portion S1, and the series of operations is completed (FIG. 3C).

  According to the perforated part sealing processing method for the existing lined piping having such characteristics, it can be inserted into the pipe from the outside of the pipe through the perforated part P2, and the diameter of the perforated part P2 is increased after the insertion. The resin receiving member 1 that forms the resin filling space is installed so as to face at least the inner periphery of the perforated portion P2, and the resin filling space is filled with resin so that the entire circumference of the end of the perforated portion P2 is covered. A perforated portion sealing treatment structure that is hermetically covered with resin is formed.

  Such a perforated portion sealing processing structure can complete the processing while maintaining the active pipe state of the pipe line P by performing the work using the above-described no-blow work bag SNB. Thus, operations from the perforation of the pipe P to the sealing process of the perforated part P2 can be performed in a state where the fluid supply to the downstream side of the pipe P is ensured. In addition, by covering the perforated part P2 with resin, a reliable sealing process can be performed on the perforated part P2, and the leakage phenomenon through the perforated part of the seal hose P1 can be reliably avoided. .

  6-8 is explanatory drawing explaining other embodiment of this invention (The same code | symbol is attached | subjected to the site | part equivalent to embodiment mentioned above, and duplication description is abbreviate | omitted). This embodiment is a sealing processing method and a sealing processing structure that are employed when plugging is performed after removing a branch joint or the like from a perforated portion of a pipeline.

  In this embodiment, a pedestal device K is mounted on the outer periphery of the pipe line P lined with the seal hose P1 as a lining layer so as to airtightly surround the perforated portion. The work bag SNB is attached, and the work in the no-blow work bag SNB is performed to remove the branch joint and the like from the perforated part P2.

  The resin receiving member 10 set with the fixture 11 is inserted into the pipe through the perforated part P2 opened in the no-blow working bag SNB. FIG. 6 is an explanatory view illustrating a resin receiving member installation step in this embodiment. As in the above-described embodiment, the resin receiving member 10 in this embodiment can be inserted into the pipe from the outside of the tube via the perforated portion P2, and after the insertion, the diameter is expanded and the resin around the inside and inside of the perforated portion P2 is resin. A filling space is formed. Here, since the removal after installation is not taken into consideration, the one that is always urged in the opening direction and is held in the open state by the urging force after passing through the perforated part P2 in the folded state is used. The fixture 11 that supports and fixes the resin receiving member 10 is screwed directly into the perforated portion P2 (FIG. 1A).

  Thereafter, the airtight cap 12 is put on the fixture 11, the pedestal device K and the no-blow work bag SNB are removed, and the fixture 11 is completely attached to the perforated part P2 using the tool 13 ((b) in the figure).

  When the attachment of the fixing tool 11 is completed, the base device K and the no-blow work bag SNB are mounted again, and the resin receiving member 10 is pulled up by the work in the no-blow work bag, and this is brought into close contact with the inner circumference of the perforated part P2. (FIG. (C)). A position fixing jig 14 is used to pull up the resin receiving member 10.

  FIG. 7 is a detailed explanatory view of the resin receiving member 10 and the fixture 11 (FIG. 7A is a plan view, and FIG. 7B is a ZZ partial sectional view). Screw parts 11A and 11B and a wrench part 11C are formed on the outer periphery of the fixing part 11, and the handle part 10A of the resin receiving member 10 can be pulled up by the flange part 11D, the plate-like material 15 and the nut 16 inside. I support it. The resin receiving member 10 is a foldable receiving member that is curved in one direction along the inner surface of the pipe P and is always urged in the opening direction, and is closely attached to the inner periphery of the perforated portion P2 on the upper surface. A seal ring 10B is provided.

  FIG. 8 is an explanatory diagram showing a resin filling step and subsequent processing steps in this embodiment. After the resin receiving member 10 is pulled up and the seal ring 10B is pressed around the inside of the perforated part P2, the pedestal device K and the no-blow work bag SNB are removed, and the resin injection nozzle 15 is inserted into the fixture 11, and the perforated part Resin is filled into the resin filling space formed inside and inside the pipe of P2, and the entire periphery of the end of the perforated part P2 is hermetically covered with the resin ((a) in the figure).

  After that, the special cap 16 is put on the fixture 11 (FIG. (B)), and further the anti-corrosion cap 17 is put on it ((c) in the same figure). Backfill.

  Also in such an embodiment, the resin receiving member 10 that can be inserted into the pipe from the outside of the pipe via the perforated part P2 and expands the diameter after the insertion to form the resin filling space around and inside the pipe of the perforated part P2. The perforated part sealing treatment structure is installed so as to face at least the inner periphery of the perforated part P2, fills the formed resin filling space with resin, and covers the entire periphery of the end part of the perforated part P2 with resin. Will be formed.

  And also by this, the sealing process in the perforated part when plugging the perforated part P2 can be performed while maintaining the active pipe state of the pipe line P. Further, by covering the perimeter of the perforated portion P2 with resin, the flagged perforated portion P2 can be securely sealed, and the leakage phenomenon through the perforated portion of the seal hose P1 can be reliably avoided. can do.

  FIG. 9 is an explanatory diagram for explaining another embodiment of the present invention (the same parts as those in the above-described embodiment are denoted by the same reference numerals and the duplicate description is omitted). In this embodiment, the resin receiving member installation process and the resin filling process are performed using an inner stopper that closes the perforated part P2 from the inside of the pipe as a support member.

  The inner stopper L includes a handle portion L1, an enlarged diameter portion L2, a stretchable portion L3, and an in-pipe contact portion L4 as a basic configuration. The tip of the inner stopper L is inserted into the pipe from the perforated part P2 (FIG. 1 (a)). Then, the resin receiving member 100 made of an elastically deformable plate material such as rubber and having an opening at the center is formed in the state where the diameter expanding portion L2 is expanded in the pipe and the expansion portion L3 is contracted. Is inserted into the tube with the handle L1 being passed through (FIG. 5B). Thereafter, the stretchable portion L3 is restored, and the outer peripheral end of the resin receiving member 100 is brought into close contact with the inner periphery of the perforated portion P2 ((c) in the figure). The above process is the resin receiving member installation process in this embodiment.

  And the cylindrical member 101 connected to the opening part of the resin receiving member 100 is arrange | positioned on the resin receiving member 100, and the resin filling space formed in the outer side of the cylindrical member 101 is filled with resin (the figure (d)). : Resin filling step). Thereafter, the expanded diameter portion L2 is restored to the reduced diameter state while the expandable portion L3 of the inner stopper L is contracted, and the inner stopper L is pulled out from the pipe through the opening of the resin receiving member 100.

  According to such an embodiment, processing can be performed at low cost using a simple and existing tool (inner stopper), and the sealing process in the perforated portion P2 is performed in the pipe line as in the above-described embodiment. It can be performed while maintaining the active tube state of P. In addition, by covering the perforated part P2 with resin, a reliable sealing process can be performed on the perforated part P2, and the leakage phenomenon through the perforated part of the seal hose P1 can be reliably avoided. .

It is explanatory drawing (description drawing explaining a resin receiving member installation process) which shows the piercing part sealing processing construction method and sealing processing structure of the existing piping to be lined concerning one Embodiment of this invention. It is explanatory drawing (descriptive drawing which showed the specific example of the supporting member) which shows the piercing part sealing processing construction method and sealing processing structure of the existing piping for lining which concerns on one Embodiment of this invention. It is explanatory drawing (descriptive drawing which showed the specific example of the resin receiving member) which shows the piercing part sealing processing construction method and sealing processing structure of the existing piping for lining which concerns on one Embodiment of this invention. It is explanatory drawing (descriptive drawing which showed the specific example of the supporting member fixing jig) which shows the piercing part sealing processing construction method and sealing processing structure of the existing lined piping which concern on one Embodiment of this invention. It is explanatory drawing (description drawing explaining a resin filling process and a subsequent process process) which shows the piercing part sealing processing method and sealing process structure of the existing piping for lining which concerns on one Embodiment of this invention. It is explanatory drawing (description drawing explaining the resin receiving member installation process) explaining other embodiment of this invention. It is explanatory drawing (detailed explanatory drawing of a resin receiving member and a fixing tool) explaining other embodiment of this invention. It is explanatory drawing (resin filling process and explanatory drawing which shows a subsequent process process) explaining other embodiment of this invention. It is explanatory drawing (example which uses an inner stopper) explaining other embodiment of this invention.

Explanation of symbols

1, 10, 100 Resin receiving member 2 Support member 20 Support part P Pipe line P1 Seal hose (lining layer)
P2 perforated part

Claims (5)

A method of sealing a perforated portion of a pipe and a lining layer for a pipe to be lined with a lining layer formed on the inner surface of the pipe,
A resin receiving member that can be inserted into the pipe from the outside of the pipe through the perforated part and expands the diameter after the insertion to form a resin filling space inside and inside the pipe of the perforated part, at least facing the inside of the perforated part pipe A resin receiving member installation process to be installed;
A resin filling step of filling the resin filling space with a resin, and covering the entire periphery of the end of the perforated part with the resin, and
A perforated portion sealing treatment method for existing pipes to be lined. The resin receiving member installation process includes:
Inserting the end of a support member provided with a freely openable / closable support at the tip through the perforated part in the closed state of the support, and opening the support by an operation from outside the tube,
The resin receiving member, which is elastically deformable, is deformed in a reduced diameter and inserted into a pipe,
The perforated part sealing treatment method for existing pipes to be lined according to claim 1, wherein the resin receiving member is supported on a support part of the support member supported outside the pipe.   The said resin receiving member is provided with the cylindrical part which opens the said piercing | piercing part, and the bulge receiving part which protrudes perpendicularly | vertically from one end of this cylindrical part, and faces the said piercing | piercing part pipe | tube inner periphery. The perforated part sealing processing method of existing piping for lining described in 2. Attaching a branch connection split sleeve to the outer periphery of the existing lined pipe, and attaching a no-blow work bag so as to cover the branch connection portion of the branch connection split sleeve;
Forming the perforated part through the split connection split sleeve in the work in the no-blow work bag,
Performing the resin receiving member installation process in the work in the no blow work bag,
The perforated portion sealing treatment method for existing pipes to be lined according to claim 3, wherein the resin filling step is performed by removing the no-blow working bag after closing the cylindrical portion of the resin receiving member. A structure for sealing a perforated portion of a pipe and a lining layer for a lining existing pipe with a lining layer formed on the inner surface of the pipe,
A resin receiving member that can be inserted into the pipe from the outside of the pipe through the perforated part and expands the diameter after the insertion to form a resin filling space inside and inside the pipe of the perforated part, at least facing the inside of the perforated part pipe The pierced portion sealing structure for existing pipes to be lined is characterized in that the resin-filled space is filled with resin, and the entire periphery of the end portion of the pierced portion is hermetically covered with the resin.

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