JP4666599B2 - Repair material and pull-in repair method using it - Google Patents

Description

  The present invention relates to a repair material used for a pull-in repair method for a mounting pipe attached to an opening of a main pipe and a pull-in repair method using the repair material.

  Drainage facilities such as sewage systems and distribution pipes in each household are connected to a main pipe buried in the ground from a mounting pipe through a public fence.

  If such a mounting pipe is aged or damaged, it may cause problems such as water leakage or water ingress, so it must be repaired, but this mounting pipe must be repaired not only on the inner wall surface of the mounting pipe but also on the mounting pipe and main pipe. It is also necessary to repair the connecting part (branch part).

  As a repair material for repairing a mounting pipe including such a connection portion (branch portion), a repair method using a brazing repair material (hereinafter referred to as a brazing repair material) is known. The brazing repair material includes a cylindrical main body impregnated with a curable resin, and a flange fixed to one end of the main body.

  When repairing the mounting pipe using such a brazing repair material, the hook part is exposed toward the main pipe with the main body part inserted into the mounting pipe, and the center of the main body part around the branch part is exposed. The center positioning is performed by aligning the center of the tube with the center of the branch pipe. With this center positioning, with the collar portion positioned so as to cover the inner wall of the main pipe around the branch portion, the collar portion is pressed from the main pipe side by a packer through which hot water is circulated, and is spread and hardened. In addition, the main body is sufficiently expanded by pressing the air into the inner tube disposed inside the main body, and the hot water is circulated while the main body is pressed against the inner wall of the mounting tube. The main body was cured.

  Here, in such a brazing repair material, the main body portion is kept along the inner wall of the mounting tube by appropriately maintaining the outer diameter of the cylindrical body used for the main body portion on the basis of the inner diameter of the mounting tube. Although it can be hardened in a spread form, it is difficult to always spread the heel part uniformly on the inner wall of the main pipe, and it is inevitable that the heel part may harden in a state of overlapping or wrinkles.

A heel repair material in which the outer surface of these heel portions is formed of a hard shape retaining material has been proposed (see, for example, Patent Documents 1 and 2).
JP 2003-35394 A (for example, FIG. 8) Japanese Patent Laying-Open No. 2004-324739 (for example, FIG. 1, paragraph 0033)

  According to the brazing repair material proposed in Patent Document 1 or 2, since the outer surface is formed of a hard shape retaining material such as FRP, overlapping and wrinkles are generated while being pressed against the inner wall of the main pipe. There is nothing to do.

  However, according to such a brazing repair material, the outer diameter of the brim portion is inevitably larger than the inner diameter of the mounting pipe, so the brazing repair material cannot be disposed from the mounting pipe side. It is necessary to pull in from the main side. Here, when the inner diameter of the main pipe is not so large as compared with the inner diameter of the mounting pipe, the flange portion may be caught in the main pipe, and it may be difficult to pull in.

  In addition, when using an auxiliary jig for facilitating the pull-in and positioning, the hook will be caught by the auxiliary jig when passing through the auxiliary jig, making it difficult to pull in and align. Is also envisaged.

  In order to solve these problems, it is conceivable to reduce the size of the buttocks. However, if the size of the buttocks is reduced, there may be a case where a sufficient function as the buttocks cannot be exhibited. For this reason, there is a limit to designing a small buttock.

  Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a brazing repair material in which the repair material is easily pulled into and positioned in the mounting pipe and a repair method using the same. And

  The present inventors have studied to solve the above-mentioned problems. As a result, the brazing repair material provided with a shape-maintaining member having a collar shape (annular or flange shape) such as an FRP thin plate that maintains the shape on the surface of the collar portion. Then, it has been found that this problem can be solved by forming a foldable fold in the ridge shape maintaining member. In other words, if the buttock is retracted, the heel repair material can be pulled in without worrying about the hook being caught, and after pulling, if the fold is released and the buttock is expanded, Can be restored, and a brazing repair material with no overlap or wrinkles can be obtained.

  That is, the present invention provides a flexible cylindrical main body layer on which a fibrous base material layer for impregnating a curable resin is laminated, and a collar portion fixed to one end of the main body portion in a bowl shape. The heel portion is formed by laminating a heel-shaped thin plate made of a hard shape-retaining material on a fibrous base material impregnated or coated with a curable adhesive. The hook-shaped thin plate is a repair material with a hook, which is formed to be foldable.

  Further, according to the present invention, a cylindrical inner tube whose tip is sealed in the state in which the fibrous base material layer is impregnated or provided with a curable resin is connected to the flange repair material. The retractable repair material is characterized in that the hook is temporarily fixed in a state in which the inner tube passes through the flange and is folded.

  Further, according to the present invention, a cylindrical inner tube whose tip is sealed in the state in which the fibrous base material layer is impregnated or provided with a curable resin is connected to the flange repair material. The inner tube passes through the flange portion, and the flange portion is temporarily fixed in a folded state, and hot water is circulated in the tube at or near the distal end of the inner tube. An opening end for discharging hot water of a hot water circulation hose is attached, and the base portion of the inner tube is used for supplying hot water to the inside using the hot water circulation hose. The inner tube is configured to be attachable to a jig, and the inner tube is configured to be inflatable and sealed by supplying air into the tube. It is included in the room rate for the repair material.

  Further, the present invention is a pipe repair method for repairing a mounting pipe attached to an opening of a main pipe using the pull-in repair material, and the repair material is attached by towing with a tow rope. A pulling step for pulling the pipe toward a predetermined position, and after the hook portion is pulled to a predetermined position of a branch portion between the main pipe and the attachment pipe, the inner tube is expanded to restore the hook portion to a hook shape. A pipeline repair method characterized by including an alignment step of aligning a buttock.

  In the description of the present invention, there are cases where the retraction repair material and the brazing repair material are distinguished from each other. However, the pull-in repair material according to the present invention also includes a collar portion, so an example of the brazing repair material. There is no change. Since the present invention is characterized in that it is drawn in a state in which the buttock is folded, the repair material with a hook temporarily fixed in a state in which such a buttock is folded is used for other repairs that are not folded. In the present invention, the material is described as a pull-in repair material, as distinguished from the material.

  According to the present invention, it is possible to provide a brazed repair material in which the repair material can be easily drawn into and positioned in the mounting pipe and a repair method using the same.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  First, FIG.1 and FIG.2 is a figure explaining an example of the repair material for drawing-in (repair material with a hook) which concerns on embodiment of this invention.

  As shown in FIG. 2, the repair material 1A includes a foldable main body 3 in which a cylindrical fibrous base material layer 2 formed into a cylindrical shape for impregnating a curable resin is laminated, and a main body 3 is provided with a flange 5 fixed to a flange shape at one end (hereinafter, this one end is referred to as a tip 4). Here, the main body portion 3 is omitted in the longitudinal direction and is drawn in a cylindrical shape. However, the main body portion 3 is a long and flexible body and can be folded or wound on a reel or the like. Stored. This facilitates storage in a factory or the like, transfer from the factory to a construction site, and the like. In addition, at the construction site, it can be arranged on a bent pipeline.

  The eaves part 5 is generally composed of an eaves-like fibrous base material (adhesive layer) 6 impregnated or coated with a curable adhesive and an eaves-like thin plate 7 formed of a hard shape-retaining material formed in a eaves shape. The adhesive layer 6 and the bowl-shaped thin plate 7 are fixed with an adhesive (not shown) or the like.

  In the repair material 1A according to this embodiment, the fibrous base material layer 2 constituting the main body 3 is impregnated with a curable resin such as an epoxy resin. Further, an inner layer 8 composed of an impermeable film such as a polyurethane film is adhered to the inside of the fibrous base material layer 2 so that monomers contained in the curable resin are not scattered, The outer side of the material layer 2 is covered with an outer film 9 made of a cylindrical impermeable film.

  The repair material 1A having such a configuration can be manufactured from, for example, a brazed repair material 1 as shown in FIG.

  Here, the repair material 1A includes a cylindrical fibrous base material layer 2 formed in a cylindrical shape from a fibrous base material to which an impermeable film such as a polyurethane film is bonded to the outside, and the cylindrical fibrous base material layer. 2 is generally composed of a flange 5 fixed to one end of 2.

  The flange portion 5 includes a flange-shaped fibrous base material (hook-like fibrous base material layer 6) fixed to the tubular fibrous base material layer 2 by sewing or the like, and the hook-like fibrous base material layer 6. It is comprised from the eaves-like thin plate 7 fixed to the inner side (the main-body part 3 side) with the adhesive agent etc.

  Since this saddle-shaped thin plate 7 is a portion exposed to the inner surface of the main pipe after construction, it is formed of a hard shape retaining material that does not generate wrinkles, and the back surface is formed in the vicinity of the front end 4 of the main body 3 via an adhesive or the like. It is fixed to the fibrous base material layer 6.

  Here, the hard shape-retaining material according to the present invention has a shape retaining property due to its high bending elastic modulus, but requires elasticity to follow the shape of the inner surface of the main pipe during construction. In the present invention, a hard holding material having a bending elastic modulus of about 5,000 to 21,000 MPa, which is a general FRP, can be applied. For example, the bending elastic modulus is in a range of about 10,000 to 15,000 MPa. When selecting FRP (fiber reinforced plastic) adjusted inside, it is preferable because it can easily follow the shape of the inner surface of the main pipe at the time of construction while maintaining a preferable ridge shape.

  Moreover, although the fiber which comprises the saddle-like fibrous base material layer 6 is not specifically limited, For example, it is a glass fiber mat. In addition, the saddle-like fibrous base material layer 6 is fixed while maintaining its form by preventing the cut pieces from falling apart when the saddle-like thin plate 7 is cut so as to be foldable. Moreover, at the time of construction, it is interposed between the saddle-like thin plate 7 and the inner wall of the attachment tube, thereby improving the appearance of the cut portion of the saddle-like thin plate 7.

  Since such a brazing repair material 1 is not impregnated with a curable resin, it can be folded or wound up on a reel or the like and stored for a long period of time. Can be stored and stocked.

  In the brazing repair material 1, the tubular fibrous base material layer 2 in the main body 3 is impregnated with a curable resin, and the adhesive layer 6 is coated or impregnated with a curable adhesive at a factory or construction site. The Subsequently, the main body 3 is passed through the flange 5 and reversed. Thereby, the cylindrical fibrous base material layer 2 impregnated with the curable resin is exposed on the outer surface. Finally, an outer film 9 is coated on the outer periphery of the exposed tubular fibrous base material layer 2 to obtain the repair material 1A shown in FIG.

  Here, in the repair material 1 of the present invention, as shown in FIG. 1, four cuts 10 (10a to 10a˜) are formed in the bowl-shaped thin plate 7 in the radial direction of the main body 3 (the central direction of the bowl-shaped thin plate 7). 10d), but no cut is formed in the cocoon-like fibrous base material layer 6. Thereby, the saddle-like thin plate 7 becomes four small pieces (thin plate pieces 7a to 7d), but the thin plate pieces 7a to 7d are separated because the back surfaces thereof are joined to the saddle-like fibrous base material layer 6, respectively. There is no. Thereby, the saddle-like thin plate 7 that has been difficult to be bent is configured such that a fold is formed by using the notch 10 and the fold can be folded from the fold.

  Next, folding of the buttocks using such a repair material 1A will be described with reference to FIG.

  First, a temporary fixing member 12 such as a rubber band and a string is prepared for temporarily fixing the cylindrical impermeable inner tube 11 and the collar-like thin plate 7 in which the tip 11a is sealed. This inner tube 11 is an example of a known molding jig, and is peeled off after construction and discarded or reused. The inner tube 11 is hermetically sealed, and thus the inner tube 11 is configured to be inflatable by supplying air into the tube. For example, the inner tube 11 can be sealed at its end by an appropriate method such as cutting an annular film having both ends opened to be longer than the length of the brazing repair material 1 and folding the end.

  Here, an open end for discharging hot water of a hot water circulation hose (not shown) for circulating hot water in the inner tube 11 may be attached to the tip 11a in the inner tube 11 or in the vicinity of the tip 11a. In this case, the base of the inner tube 11 (the end with respect to the tip) is configured such that the base of the hot water hose can be attached to a hot water circulation jig so that hot water can be supplied inside using the hot water circulation hose. .

  As shown in FIG. 5A, the distal end 11 a of the inner tube 11 is disposed in the main body portion 3 through the flange portion 5. Although the arrangement | positioning method of the inner tube 11 is not specifically limited, For example, it can insert by reversing by sending air from the end of the repair material 1. FIG.

  Next, the thin plate pieces 7b and 7c are folded in two on the thin plate pieces 7a and 7d side using the notches 10a and 10c as folds (arrow a). Further, using the notches 10b and 10a as folds, as shown in FIG. 5B, the thin plate pieces 7c and 7d are folded to the thin plate piece 7b side (arrow b). As a result, the saddle-shaped thin plate 7 is folded into four folds, and each thin plate piece 7a to 7d is folded into one (four-folded state), as shown in FIG. Temporarily fixed by a temporary fixing member 12 such as. Thereby, the repair material 13 for drawing in which drawing-in construction to a mounting pipe can be performed immediately is produced.

If comprised in this way, since the collar part 5 is folded in the state which the front-end | tip 11a of the inner tube 11 penetrated the collar part 5, for example, compressed air is supplied in the inner tube 11, and the inner tube 11 is made to pass. If pushed, the tip 11a is expanded in diameter. If the temporary fixing member 12 is a rubber band or the like, the rubber band is cut and the temporary fixing can be released. Thereby, as shown to Fig.5 (a), each thin-plate piece 7a-7d of the collar part 5 can be pushed and expanded to the state before folding.
[Modification]
FIG. 4 shows a repair material 1B according to a modification of the repair material 1A of FIG. This repair material 1B is the same as the repair material 1A for retraction shown in FIG. 1 except that six cuts 10a to 10f are provided in the saddle-shaped thin plate 7 toward the center. Thereby, in this repair material 1B, the bowl-shaped thin plate 7 is divided | segmented into six thin plate pieces 7a-7f. In the repair material 1, the collar portion 5 is folded in four, but in the repair material 1B, the collar portion 5 is folded in six.

  Thus, although the collar part 5 can be formed compactly according to the number of folds, if many folds are formed more than necessary, the appearance when spread is reduced. On the other hand, if the number of folds is small, sufficient effects cannot be obtained. The preferred number of folds is about 2 to 10, generally 4 or 6.

  Next, an example of a construction example using the pull-in repair material 13 of the present invention will be described.

  From a factory or the like, the brazing repair material 1 (or the pull-in repair material 13) is transported by a transport vehicle, a work vehicle, or the like. The brazing repair material 1 (or the pull-in repair material 13) has a predetermined diameter and a predetermined length in advance in consideration of the pipe diameter and length of the mounting pipe. Even when a thermosetting resin is selected as the curable resin or curable adhesive, impregnation or application of the curable resin or the curable adhesive can be performed at a factory or the like by using a cold car or the like. . In the case of using a photo-curable curable resin or a curable adhesive, if the light is blocked, a cold car is unnecessary. Further, when using the brazing repair material 1 that is not impregnated or coated with resin or the like, impregnation with curable resin or curable adhesive, application, folding and temporary fixing of the ridge-like thin plate 7 are performed at the construction site. Is called.

  In the following construction examples, for convenience of explanation, an example using a thermosetting resin as the curable resin will be described.

  First, FIG. 6 is an explanatory diagram for explaining the repair method according to the embodiment of the present invention, and FIG. 7 is a guide roller as an example of an auxiliary jig for facilitating the pull-in and alignment of the repair material. FIG. 8 is a cross-sectional view illustrating in detail a process of positioning using the hot water packer.

  In FIG. 6, reference numeral 20 is an attachment pipe for piping to a drainage facility such as a sewerage system, a distribution pipe, etc. in each home via a public pit, and the attachment pipe 20 is a main pipe 21 embedded in the ground. It is connected to the. If such a mounting pipe 20 is aged or damaged, it causes problems such as water leakage and water intrusion. Therefore, it is necessary to repair the mounting pipe 20, but not only the inner wall surface 20a of the mounting pipe 20 is repaired. Further, it is necessary to repair the connecting portion (branch portion 22) between the mounting pipe 20 and the main pipe 21.

  Here, in the repair method according to this embodiment, two manholes 23 and 24 arranged with the attachment tube 20 interposed therebetween are used. The retractable repair material 13 is folded in the vicinity of one manhole 23 so that it can be introduced into the manhole 23 from the base portion 13b.

  When introducing the pull-in repair material 13, for example, a travelable hot water packer 25 as shown in FIG. 7 is used. The hot water packer 25 is provided with an auxiliary jig for facilitating pulling and positioning. In this auxiliary jig, a guide portion 28 surrounded by the arm 26 and the guide roller 27 is formed by including a guide roller 27 sandwiched between the tips of the pair of arms 26. Further, the hot water packer 25 includes a circulation hose 30 for circulating hot water to the packer portion 29, a tow rope 31 attached to the front and rear, and the like.

  The rope 32 is fixed to the base portion 13b of the pull-in repair material 13, and the wire 33 is fixed to the distal end 4 (the flange portion 5). The rope 32 is disposed so that the tip 32 a is taken out from the attachment pipe 20 through the guide portion 28 from below the guide roller 27 of the hot water packer 25 introduced into the main pipe 21.

  The main body 3 is drawn into the mounting tube 20 while finely adjusting the position of the hot water packer 25 with the tow rope 31 attached before and after the hot water packer 25 so that the pull-in resistance of the main body 3 is reduced (FIG. 8). ).

  Next, the pull-in repair material 13 is completely inserted from the base portion 13 b to the flange portion 5 using the guide roller 27 while pulling the rope 32 and the wire 33. In the pull-in repair material 13, since the collar part 5 is folded in advance, the collar part 7 is less likely to catch the guide part 28 and can easily pass through.

  Moreover, if the collar part 5 is after passing the guide part, since the thing which the collar part 5 catches is lost, you may cancel | release temporary fixation. In this embodiment, the rough alignment is performed until the central axis of the collar portion 5 is near the predetermined position of the branch portion 22. In a state where the flange portion 5 has substantially reached the vicinity of the branching portion 22, a hot water circulation jig (not shown) including an air introduction device is attached to the base portion 13 b of the pull-in repair material 13. Compressed air is introduced into the inner tube 11 (not shown), the diameter of the forming hose 5 is expanded, and the temporary fixing of the flange portion 5 is released.

Next, the flange 5 is aligned while finely adjusting the position of the flange 5 by applying a pressure of about 0.2 to 0.8 kgf / cm ² in the inner tube 11 (FIG. 6B). By expanding the diameter of the inner tube 11, the thin plate pieces 7a to 7d are pushed and spread in a flat plate shape. Moreover, in this state, since the inner tube 11 is expanded in diameter in a state in which the distal end portion 11a of the inner tube 11 protrudes slightly into the main pipe 21 from the flange portion 5, simultaneously with the expansion of the thin plate pieces 7a to 7d. Center alignment centering on the axial direction of the attachment pipe 20 of the collar part 5 is attained.

  As shown in FIG. 6 (c), the hot water packer 25 is moved so that the packer portion 29 comes below the flange portion 5, the diameter of the packer portion 29 is expanded, and the hot water packer 25 is fixed. At this time, the distal end 11a of the inner tube 11 is pushed back into the interior by expanding the diameter of the packer portion 29. Further, each of the eaves-like thin plates 7 (thin plate pieces 7 a to 7 d) that are spread out is curved and pressed along the shape of the inner wall surface of the main pipe 21. The bowl-like thin plate 7 may be curved and molded along the shape of the inner wall of the main pipe 21, but is flexible and can be deformed by pressing the packer portion 29. If it uses, it will become unnecessary to align the collar part 5 along a curve, and construction will be simplified.

While maintaining the expansion pressure by the forming tube at 0.2 to 0.8 kgf / cm ² , 80 ° C. hot water is circulated for 1 hour to sufficiently cure the main body 3. During this time, the heel part 5 circulates warm water in the warm water packer 25 and heat cures to about 80 ° C.

  After the heat curing, the hot water is cooled, the inner tube 11 and the hot water packer 25 are removed, and the operation is generally finished.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and the present invention can be changed even if there is a design change or the like without departing from the gist of the present invention. included.

  For example, in the above description, the inner layer 8 is bonded to the cylindrical fibrous base material layer. However, since the inner layer 8 comes into contact with the waste water flowing inside after the repair, the water resistance and durability of the polyurethane film or the like Although the material excellent in property was selected, other materials may be used without being limited to the polyurethane film as long as the water resistance and durability are excellent. Moreover, as long as it has a function as an inner layer, the fibrous base material layer 2 may be directly exposed without depending on a film material.

  Similarly, the outer film 9 is covered with the fibrous base material layer 2, but the outer film 9 may be formed integrally with the fibrous base material layer 2.

  In the above description, the rubber band that can be cleaved by the expansion of the inner tube 11 has been exemplified as an example of the temporary fixing member 12. However, as the temporary fixing member 12, the folded state of the flange portion 5 can be temporarily fixed. And when it is going to push and expand the collar part 5, what kind of structure may be sufficient if this temporary fixation can be cancelled | released. For example, even when fastened with a strong rubber band, string, or other temporary fixing member, it is sufficient that the fastening portion can be cleaved by pulling the lobe from a distance by tying the fastening portion with a rope or the like. That is, the temporary fixing portion may be any configuration or member as long as the temporary fixing can be released at a necessary time from a distance.

  In the above description, the pull-in method using the auxiliary jig (guide portion 28) that facilitates the pull-in is described. However, in the present invention, these auxiliary jigs may not necessarily be used. For example, although the pull-in repair material was introduced from the manhole 23, according to the repair material according to the present invention, since the collar portion is folded, it can be folded smaller than the relationship of the attachment pipe. Thereby, the repair material for drawing-in can also be drawn in using the pipe line of an attachment pipe.

  As an auxiliary jig, a pair of arms 26, a guide roller 27, and a packer part 29 are formed in an annular shape. However, if the pull-in repair material 13 can be guided into the mounting tube from the base 13b, the shape of the auxiliary jig is Be free. For example, the auxiliary jig (guide portion 28) does not have to be completely annular, and may be an auxiliary jig provided with a U-shaped guide portion, for example.

  Moreover, if a light-transmitting tube is used as the forming tube, light can be irradiated toward the repair material for drawing through the forming tube. Thus, it goes without saying that the same effect can be expected even when a repair material for drawing in which a main body is impregnated with a photocurable resin is used instead of the thermosetting resin.

  Needless to say, a television camera may be used for the construction.

It is a schematic diagram for demonstrating an example of the brazing repair material which concerns on embodiment of this invention. It is a cross-sectional schematic diagram for demonstrating an example of the brazing repair material which concerns on embodiment of this invention. It is a schematic diagram for demonstrating an example of the brazing repair material which concerns on embodiment of this invention. It is a cross-sectional schematic diagram for demonstrating an example of the brazing repair material which concerns on embodiment of this invention. It is process drawing explaining the process of temporarily fixing in the state which folded the collar part of the repair material with a collar concerning embodiment of this invention. FIGS. 6A to 6C are explanatory diagrams for explaining the repair method according to the embodiment of the present invention. It is a perspective view for demonstrating an example of the auxiliary jig used for the repair method concerning embodiment of this invention. It is a cross-sectional view for demonstrating the repair construction method which concerns on embodiment of this invention.

Explanation of symbols

1 (1A, 1B): Repair material with a brace (repair material)
2: Cylindrical fibrous base material layer (fibrous base material layer)
3: Body part 4: One end (tip)
5: collar part 6: bowl-like fibrous base material layer (adhesive layer)
7: A bowl-shaped thin plate (a bowl-shaped thin plate)
7a-7f: Thin plate piece 8: Impermeable film (inner layer)
9: Cylindrical impermeable film (outer film)
10: Cut 11: Tube for molding (inner tube)
12: Temporary fixing member 13: Repair material for retraction (repair material with a hook or repair material)
13b: Terminal (base)
20: Mounting pipe 20a: Inner wall surface 21: Main pipe 22: Branch part 23: Manhole 24: Manhole 25: Hot water packer 26: Arm 27: Guide roller 28: Guide part 29: Packer part 30: Circulation hose 31: Tow rope 32 : Rope 33: Wire

Claims (6)

  Repair with brazing comprising a flexible cylindrical main body laminated with a fibrous base material layer for impregnating a curable resin, and a collar fixed to one end of the main body in a collar shape The heel portion is formed by laminating a cocoon-shaped thin plate made of a hard shape retaining material on a fibrous base material impregnated or coated with a curable adhesive, and the ridge-like thin plate can be folded. A repair material with a hook, characterized in that it is formed.   2. The scissor repair material according to claim 1, wherein a cut is formed in the flange-shaped thin plate in a radial direction of the main body, and the fold is formed in the flange by the cut. The brazed repair material according to claim 1 or 2, wherein a cylindrical inner tube whose tip is sealed in a state in which the fibrous base material layer is impregnated or provided with a curable resin is connected to the tip. Is disposed through,
A retractable repair material, wherein the inner tube is temporarily fixed in a state in which the inner tube penetrates the flange, and the flange is folded. The brazed repair material according to claim 1 or 2, wherein a cylindrical inner tube whose tip is sealed in a state in which the fibrous base material layer is impregnated or provided with a curable resin is connected to the tip. Is disposed through,
The inner tube is temporarily fixed in a folded state with the inner tube passing through the flange,
An opening end for discharging hot water of a hot water circulation hose for circulating hot water in the tube is attached to or near the tip of the inner tube,
The base portion of the inner tube is configured so that the base portion of the hot water hose can be attached to a hot water circulation jig so that hot water can be supplied to the inside using the hot water circulation hose. A retractable repair material, wherein the inner tube is hermetically sealed by supplying air therein. A repair method for a pipe line for repairing a mounting pipe attached to an opening of a main pipe using the pull-in repair material according to claim 3 or 4,
A towing step of towing the repair material toward a predetermined position of the mounting pipe by towing with a tow rope;
An alignment step of aligning the collar part while the collar part is inflated to restore the collar part after the collar part is pulled to a predetermined position of the branch part between the main pipe and the attachment pipe,
A repair method for a pipeline characterized by including Repair of a pipe line for repairing a mounting pipe attached to an opening of a main pipe by using the repair material for pull-in according to claim 3 or 4 and an auxiliary jig for facilitating the pull-in and positioning of the repair material. Construction method,
A towing step of towing the repair material toward a predetermined position of the mounting pipe by towing the towing rope through the auxiliary jig;
An alignment step of aligning the collar part while expanding the inner tube and restoring the collar part into a collar shape after the collar part has passed through the auxiliary jig;
A repair method for a pipeline characterized by including

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