JP6018866B2 - Pipe repair method - Google Patents

Description

  The present invention relates to a pipe line repair method for repairing an inner wall surface of an existing pipe line.

  In Patent Document 1, in order to repair an existing pipeline, first, a ring-shaped reinforcing member that extends along the circumferential direction of the inner wall surface of the pipeline is substantially equal along the length direction of the pipeline. A plurality of reinforcing members are arranged at intervals, and the plurality of reinforcing members are connected to each other by a plurality of connecting members extending along the length direction of the pipe line. Each reinforcing member is formed with a plurality of concave portions (fitting portions) arranged along the circumferential direction of the pipeline on the inner peripheral surface thereof. And as above-mentioned, after arrange | positioning several reinforcement members in a pipe line, it extended in the length direction of the pipe line across several reinforcement members, and several coating | coated member which has a substantially U-shaped cross-sectional shape (Inner surface member) is attached so as to straddle two adjacent concave portions of the reinforcing member. As a result, the inner wall surface of the pipeline is covered with the covering member, and the existing pipeline is repaired.

JP 2009-14092 A

  Here, in Patent Document 1, as described above, in order to attach the covering member extending across the plurality of reinforcing members to the concave portion of the reinforcing member, the corresponding concave portions of the plurality of reinforcing members have the length of the pipe line. It must be located at the same position when viewed from the direction. For this purpose, it is necessary to accurately position the reinforcing member in the circumferential direction of the pipe when the member is disposed in the pipe. At this time, for example, when the distance from the inner wall surface of the pipe line is individually measured for each reinforcing member and positioning is performed based on the measurement result, the work time is increased when the length of the pipe line is long. Will become enormous.

  In addition, the shape of the pipe may be different for each part due to deterioration over time, etc.In such a case, if the reinforcing member is positioned with reference to the inner wall surface of the pipe, the plurality of reinforcing members The positions of the concave portions corresponding to each other may be shifted from each other when viewed from the length direction of the pipe line.

  An object of the present invention is to provide a pipe repair method capable of accurately and easily positioning a plurality of reinforcing members arranged along the pipe length in the circumferential direction of the pipe. It is to be.

  In the pipe line repair method according to the first aspect of the present invention, a plurality of reinforcing members each extending along the circumferential direction of the pipe line are spaced along the length direction of the pipe line on the inner wall surface of the pipe line. A method for repairing a pipe line, comprising: a reinforcing member attaching step for attaching the cover member; and a covering member attaching step for attaching a plurality of covering members covering an inner wall surface of the pipe line to a frame formed by the plurality of reinforcing members. The reinforcing member attaching step attaches to the inner wall surface a reference member that is common to the plurality of reinforcing members and serves as a reference for the positions of the plurality of reinforcing members in the circumferential direction of the pipe line. And a positioning step for positioning the plurality of reinforcing members using the reference member, and a fixing step for fixing the plurality of positioned reinforcing members to the inner wall surface. .

  According to the present invention, since each reinforcing member is positioned based on a reference member common to a plurality of reinforcing members, each reinforcing member is individually reinforced compared to the case where positioning is performed based on the inner wall surface. The member can be easily positioned with respect to the inner wall surface of the pipe line. In addition, the positional relationship between the plurality of reinforcing members can be made accurate.

  A pipeline repair method according to a second invention is the pipeline repair method according to the first invention, wherein the reference member is a rod-shaped member extending along the length direction of the pipeline, The reinforcing member attaching step is for holding the reference member at a larger interval than the plurality of reinforcing members in the length direction of the pipe line on the inner wall surface before the reference member attaching step. A holding member attaching step for attaching a plurality of holding members is further provided, and in the reference member attaching step, the reference member is attached to the inner wall surface by attaching the reference member to the plurality of holding members.

  According to the present invention, when the reference member is a rod-like member extending in the length direction of the pipe line, the plurality of holding members are accurately positioned and attached to the inner wall surface, and the reference member is attached to the holding member. The positioning of the reference member with respect to the inner wall surface can be performed with high accuracy.

  A pipeline repair method according to a third invention is the pipeline repair method according to the second invention, wherein the reinforcing member attaching step is separated from each other in the length direction of the pipeline in the pipeline. And further comprising a yarn tensioning step of tensioning the yarns positioned at two points, and in the holding member attaching step, at least some of the holding members among the plurality of holding members are attached to the inner wall surface based on the position of the yarn. It is characterized by that.

  According to the present invention, a thread extending along the length direction of the pipe line is stretched, and the holding member is attached to the inner wall surface of the pipe line with reference to the position of this thread. Therefore, the holding member can be easily attached as compared with the case where it is positioned and attached to the inner wall surface of the conduit.

  A pipeline repair method according to a fourth aspect of the present invention is the pipeline repair method according to any one of the first to third aspects of the invention, wherein the reinforcing member attaching step is configured to fix the reference member after the fixing step. It is further provided with the removal process removed from the inner wall face of a pipe line.

  According to the present invention, since the reference member is removed after the reinforcing member is fixed to the inner wall surface of the conduit, the reference member does not get in the way when the covering member is attached.

A pipe line repair method according to a fifth aspect of the present invention is the pipe line repair method according to the fourth aspect of the present invention, wherein the reinforcing member has a plurality of recesses for attaching the plurality of covering members. A plurality of reference members are formed along the circumferential direction, and the reference member is configured to be engageable with the recesses. In the positioning step , the corresponding recesses of the plurality of reinforcing members are engaged with the reference member. The plurality of reinforcing members are positioned by combining them.

  According to the present invention, since the reinforcing member can be positioned by engaging the recess for attaching the covering member of the reinforcing member with the reference member, a portion for attaching the reference member to the reinforcing member is separately provided. There is no need.

  A pipeline repair method according to a sixth invention is the pipeline repair method according to the fifth invention, wherein the reference member is a substantially cylindrical member that can be engaged with the recess. .

  According to the present invention, the reference member that can be engaged with the concave portion of the reinforcing member can be easily formed.

  According to the present invention, in order to position each reinforcing member with reference to a reference member common to a plurality of reinforcing members, each reinforcing member is individually compared with the case where positioning is performed with reference to the inner wall surface, The reinforcing member can be easily positioned with respect to the inner wall surface of the pipe line. In addition, the positional relationship between the plurality of reinforcing members can be made accurate.

It is sectional drawing along the perpendicular surface containing the length direction of the pipe line after repair. It is the figure which expanded the cylindrical lining material shown by the cross section in FIG. 1, the upper half is the figure which looked at the lining material from the inside, and the lower half is the figure which looked at the lining material from the outside. It is the III-III sectional view taken on the line of FIG. It is the A section enlarged view of FIG. It is a figure which shows the reinforcement member which comprises the lining material of FIG. It is a figure which shows the process of arrange | positioning the holding member of both ends. It is a figure which shows the process of extending | stretching a water thread and attaching the remaining holding member on the basis of a water thread. It is a figure which shows the process of attaching a reference | standard member to a holding member. It is a figure which shows the process of attaching a reinforcement member to a reference member. It is the B section enlarged view of Drawing 9 (a). (A) is a figure which shows the process of attaching the remaining part of a reinforcement member, (b) is a figure which shows the process of removing a holding member and a reference | standard member. It is a figure equivalent to Fig.10 (a) in one modification.

  Hereinafter, preferred embodiments of the present invention will be described.

  This embodiment is an example in which the present invention is applied when the inner wall surface of an existing pipe line is repaired by lining the inner wall surface of an existing pipe line, such as a sewer pipe buried in the ground. is there. This embodiment is intended for a relatively large-diameter pipe having a pipe diameter of about 1.5 m to 2.0 m. Various members are carried into the pipe P from the manhole H shown in FIG. The lining material 1 is assembled, and repair is performed by covering the inner wall surface P1 of the pipeline P with the lining material 1 over the entire circumference in a predetermined repair space in the pipeline P.

  The structure of the lining material 1 will be described. 2 to 5, the lining material 1 includes a plurality of reinforcing members 2 and a plurality of inner surface members 3 (covering members).

  As shown in FIG. 3, the reinforcing member 2 includes four members 2a, 2b, 2c, and 2d arranged along the right side, left side, lower portion, and upper portion of the inner wall surface P1 of the pipe P in FIG. These four members 2a to 2d are connected in the circumferential direction by a coupling member 11 shown in FIG. The members 2a to 2d are made of a highly rigid material such as carbon steel, stainless steel, or hard synthetic resin. As shown in FIGS. 2 and 5, a plurality of ring-shaped reinforcing members 2 are arranged at intervals of a distance D1 in the length direction of the pipeline P, and the inner wall surface P1 of the pipeline P by the anchor member 35. The reinforcing members 2 adjacent to each other are coupled to each other by a plurality of pipe-shaped coupling members 12. Thereby, the some ring-shaped reinforcement member 2 is integrated and the cylindrical reinforcement frame body is comprised.

  As shown in FIGS. 3 and 4, a plurality of recesses 13 are formed at intervals along the circumferential direction on the inner peripheral surface of the reinforcing member 2 (members 2 a to 2 d). A plurality of fitting members 4 extending in the length direction of the pipeline P across two or more adjacent reinforcing members 2 are respectively fitted. Furthermore, on the inner surface of the reinforcing member 2, a plurality of inner surface members 3 extending in the length direction of the pipeline P across two or more adjacent reinforcing members 2 are arranged side by side in the circumferential direction. As shown in FIG. 4, the inner surface member 3 is fitted to the inner surface of the reinforcing member 2 by fitting with one fitting member 4 in a state where the ends of two inner surface members 3 adjacent to each other in the circumferential direction are in contact with each other. It is fixed.

  Note that the material of the fitting member 4 and the inner surface member 3 is excellent in corrosion resistance, lightweight, excellent in workability, and low in cost, such as thermoplastic resin such as olefin, such as polyethylene resin, unsaturated. Although it is preferable to use a thermosetting resin such as a polyester resin, a metal such as a fiber reinforced plastic having higher strength, a thermoplastic resin having flame retardancy, or stainless steel may be used.

  Moreover, the inner surface member 3 and the fitting member 4 which attaches this inner surface member 3 to the reinforcement member 2 are each connected with two or more by the length direction of the pipe line P, Thereby, the inner surface member 3 is the full length of a repair area. The inner surface of the pipe P is covered. Details of a method of connecting the plurality of inner surface members 3 and the fitting members 4 in the length direction of the pipe P are omitted, but for example, in Japanese Patent Laid-Open No. 2002-310378 and Japanese Patent Laid-Open No. 2009-14092. As described, it is possible to employ a method in which the ends of two inner surface members 3 (fitting members 4) are respectively inserted into both ends of one connecting member to connect them.

  Next, a method for repairing the pipeline P using the lining material 1 will be described.

  In order to repair the pipeline P using the lining material 1, first, as shown in FIGS. 6A and 6B, the pipeline P, which is a part of the inner wall surface P1, is viewed from the direction of FIG. The holding members 31a are respectively attached to portions of the right side wall surface P1a located at both ends of the repair section (see FIG. 1). The holding member 31a is a substantially L-shaped member such as angle steel, and one of the two portions sandwiching the bent portion serves as a fixing portion 41 for fixing to the side wall surface P1a. The other portion serves as an attachment portion 42 for attaching reference members 33a and 33b described later. Then, the holding member 31a is arranged in such a manner that the fixing portion 41 extends along the side wall surface P1a of the pipeline P, and the attachment portion 42 extends substantially horizontally from the side wall surface P1a toward the inside of the pipeline P. The fixing portion 41 is fixed to the side wall surface P1a by the anchor member 32. At this time, the holding member 31a is attached so that the two holding members 31a are at the same position when viewed from the length direction of the pipe line P.

  Further, in the same manner as described above, the two holding members 31b are also attached to the left side wall surface P1b of the pipe line P which is a part of the inner wall surface P1 when viewed from the direction of FIG.

  Next, as shown in FIG. 7A, a water yarn Y indicating a horizontal line is stretched between the two holding members 31a attached to the side wall surface P1a (yarn arranging step). Subsequently, as shown in FIG. 7 (b), it is larger than the interval D1 between the reinforcing members 2 after being attached to the portion located between the two holding members 31a of the side wall surface P1a of the pipe P. A plurality of holding members 31a are attached at substantially equal intervals with the interval D2 (holding member attaching step). At this time, by attaching each holding member 31a with the water yarn Y as a reference, all the holding members 31a are attached to the side wall surface P1a of the pipeline P so as to be completely overlapped when viewed from the length direction of the pipeline P. Can do.

  Further, between the two holding members 31b attached to the side wall surface P1b, the water yarn Y is stretched in the same manner as described above, and the water yarn Y is used as a reference between the two holding members 31b on the side wall surface P1b. A plurality of holding members 31b are attached to the portion located at the position. And after attachment of all the holding members 31a and 31b is completed, the water yarn Y is removed.

  Next, as shown in FIGS. 8A and 8B, among the plurality of holding members 31a attached to the side wall surface P1a, the upper surface of the attaching portion 42 of two or more holding members 31a arranged adjacent to each other. In addition, a substantially columnar (bar-shaped) reference member 33a extending in the length direction of the pipe line P is disposed across the two or more holding members 31a, and a reference member 33a is used by using a shrunk-type vise not shown. Are attached to the two or more holding members 31a. Similarly, a reference member 33b similar to the reference member 33a is attached to two or more holding members 31b arranged adjacent to each other among the plurality of holding members 31b attached to the side wall surface P1b. Here, the reference members 33a and 33b have a length (for example, about 5 m) that can be introduced into the pipe P from the manhole H connected to the pipe P.

  Next, as shown in FIGS. 9 and 10, by engaging the corresponding recesses 13 of the members 2a of the plurality of reinforcing members 2 with the reference members 33a, the members 2a are connected to the pipes P. Are arranged at intervals of D1 in the length direction. At this time, in the plurality of members 2a, the concave portions 13 corresponding to each other are engaged with the reference member 33a, so that the concave portions 13 corresponding to each other in the length direction of the pipeline P are viewed from the length direction of the pipeline P. It is positioned in the circumferential direction of the pipe P so as to be at the same position. Then, the plurality of members 2 a positioned in the circumferential direction of the pipeline P are fixed to the side wall surface P 1 a of the pipeline P by the anchor member 35.

  Similarly, by engaging the recesses 13 corresponding to each other of the members 2b of the plurality of reinforcing members 2 with the reference member 33b, respectively, while positioning the plurality of members 2b in the circumferential direction of the pipeline P, the pipelines They are arranged at almost equal intervals in the length direction of P. Then, the plurality of positioned members 2b are fixed to the side wall surface P1b of the pipe line P by the anchor member 35.

  In the present embodiment, the step of positioning the members 2a and 2b in the circumferential direction of the pipe P by engaging the concave portions 13 of the members 2a and 2b with the reference members 33a and 33b, respectively, This corresponds to the positioning step according to the invention.

  Next, as shown in FIG. 11A, the reinforcing member 2 is formed by attaching the members 2c and 2d to the members 2a and 2b, and the members 2c and 2d are connected to the inner wall surface of the pipe P by the anchor member 35. Fix to P1. In parallel with this, the reinforcing members 2 are connected to each other by the connecting member 12. In the present embodiment, the step of fixing the members 2a to 2d to the inner wall surface P1 by the anchor member 35 corresponds to the fixing step according to the present invention. Moreover, what combined the process from attachment of the above-mentioned holding member 31a, 31b to fixation of the reinforcement member 2 by the anchor member 35 is equivalent to the reinforcement member attachment process which concerns on this invention.

  After that, when the fixing of the members 2c and 2d by the anchor member 35 is completed in the region where the reference members 33a and 33b are arranged (when the attachment of the reinforcing member 2 is completed), the reference members 33a, 33b is fixed to the holding members 31a and 31b, and the reference members 33a and 33b are shifted in the length direction of the pipe line P (removed from the region in which the fixing of the members 2c and 2d by the anchor member 35 is completed). Next, the reinforcing member 2 is moved to a region where it is attached. Further, as shown in FIG. 11 (b), the holding members 31 a and 31 b arranged in the region where the fixing of the members 2 c and 2 d by the anchor member 35 is completed is removed from the inner wall surface P 1 of the pipe line P.

  In the present embodiment, the step of displacing the reference members 33a and 33b and removing the holding members 31a and 31b corresponds to the removing step according to the present invention. And in the area | region where the reference members 33a and 33b shifted in the length direction of the pipe line P are disposed, the members 2a to 2d are attached to the inner wall surface P1 in the same manner as described above.

  On the other hand, in the area where the attachment of the reinforcing member 2 is completed and the holding members 31a and 31b are removed, the frame formed by the plurality of reinforcing members 2 connected to each other by the connecting member 12 is as shown in FIG. Further, by attaching the fitting member 4 and the inner surface member 3, the inner wall surface P1 of the pipe P is covered (covering member attaching step), and the lining material 1 is completed. Then, after the lining material 1 is completed, the gap is filled by filling the gap between the lining material 1 and the inner wall surface P1 of the pipe line P with mortar or the like.

  According to the embodiment described above, by engaging the recesses 13 of the members 2a and 2b of the plurality of reinforcing members 2 with the reference members 33a and 33b extending along the length direction of the pipe P, respectively. In order to position the members 2a and 2b in the circumferential direction of the pipe P, the members 2a and 2b of each reinforcing member 2 are individually compared with the case where the members 2a and 2b are positioned with reference to the inner wall surface P1 of the pipe P. The time required for the work of attaching 2a and 2b to the inner wall surface P1 of the pipe P can be shortened.

  Moreover, since the inner wall surface P1 of the pipe line P may have a variation in diameter or the like for each part due to deterioration over time, the members 2a and 2b of the reinforcing members 2 are individually connected to the inner wall surface of the pipe line P. When positioning is performed with reference to P1, the recess 13 does not come to the same position between the reinforcing members 2 when viewed from the length direction of the pipe P, and the fitting member 4 and the inner surface member 3 may not be attached.

  In contrast, in the present embodiment, as described above, the pipes of the members 2a and 2b are formed by engaging the recesses 13 of the members 2a and 2b of the plurality of reinforcing members 2 with the reference members 33a and 33b, respectively. In order to perform positioning in the circumferential direction of the path P, the reinforcing member 2 is connected to the pipe line P such that the corresponding concave portions 13 of the plurality of reinforcing members 2 are surely located at the same position when viewed from the length direction of the pipe line P. Can be attached to the inner wall surface P1.

  In the present embodiment, a plurality of holding members 31a and 31b arranged in the length direction of the pipe line P are attached and held on the inner wall surface P1 so as to be at the same position when viewed from the length direction of the pipe line P. Since the substantially cylindrical (rod-shaped) reference members 33a and 33b are attached to the members 31a and 31b, the plurality of holding members 31a and 31b are positioned with high accuracy and attached to the inner wall surface P1, thereby attaching to the holding members 31a and 31b. The reference members 33a and 33b can be positioned with high accuracy.

  At this time, of the plurality of holding members 31a and 31b, two holding members 31a and 31b positioned at both ends in the length direction of the pipe line P are attached to the inner wall surface P1, and these two holding members 31a and 31b are attached. In order to attach the remaining holding members 31a and 31b to the inner wall surface P1 with the water yarn Y as a reference, the remaining holding members 31a and 31b are individually positioned and positioned on the inner wall surface P1. Compared with the case of attaching to the inner wall P1, the attachment to the inner wall surface P1 is simplified.

  In the present embodiment, the members 2a and 2b can be positioned by engaging the concave portions 13 of the members 2a and 2b of the reinforcing members 2 with the reference members 33a and 33b. In addition, it is not necessary to provide a portion for engaging with the reference members 33 a and 33 b separately from the recess 13. At this time, since the reference members 33a and 33b are substantially cylindrical members extending in the length direction of the pipe P, the structures of the reference members 33a and 33b that can be engaged with the concave portions 13 of the members 2a and 2b. Can be made simple.

  In the present embodiment, after fixing the reinforcing member 2 to the inner wall surface P1 of the pipe P, before attaching the fitting member 4 and the inner surface member 3, the reference members 33a and 33b and the holding members 31a and 31b are moved to the inner side. Since it removes from the wall surface P1, when attaching the fitting member 4 or the inner surface member 3, the reference members 33a and 33b and the holding members 31a and 31b do not get in the way.

  Next, modified examples in which various changes are made to the present embodiment will be described. However, description of components having the same configuration as in this embodiment will be omitted as appropriate.

  In the above-described embodiment, the reference members 33a and 33b are substantially cylindrical rod-shaped members, but are not limited thereto. The reference members 33a and 33b may have different shapes that can be engaged with the recesses 13 of the members 2a and 2b.

  In the above-described embodiment, the reinforcing member 2 is positioned by engaging the concave portions 13 of the members 2a and 2b with the reference members 33a and 33b. However, the present invention is not limited to this. For example, the members 2 a and 2 b are provided with portions that can be engaged with the reference members 33 a and 33 b separately from the recess 13, and by engaging these portions with the reference members 33 a and 33 b, Positioning may be performed. Further, in this case, the reference members 33a and 33b may have a shape that can be engaged with the portion of the reinforcing member 2, and may have a shape that cannot be engaged with the concave portion 13.

  Furthermore, it is not restricted to attaching the members 2a and 2b to the reference members 33a and 33b. For example, the members 2a and 2b may not be attached to the reference members 33a and 33b, and the members 2a and 2b may be aligned by simply measuring the distance from the reference members 33a and 33b.

  In the above-described embodiment, the anchor member 35 fixes the reinforcing member 2 (members 2a to 2d) to the inner wall surface P1 of the pipe P, and then attaches the reference member before attaching the fitting member 4 and the inner surface member 3. Although the members 33a and 33b and the holding members 31a and 31b are removed from the inner wall surface P1 of the pipe P, the present invention is not limited to this. For example, as described above, the members 2a and 2b are provided with portions that can be engaged with the reference members 33a and 33b separately from the recesses 13, and by engaging the portions with the reference members 33a and 33b. In the case where the reinforcing member 2 is positioned and the reference members 33a and 33b and the holding members 31a and 31b do not interfere with the fitting of the fitting member 4 and the inner surface member 3, the reference member 33a is used. 33b and the holding members 31a and 31b may be left, and the fitting member 4 and the inner surface member 3 may be attached.

  Further, in the above-described embodiment, after the two holding members 31a and 31b positioned at both ends in the length direction of the pipe P are first attached to the inner wall surface P1 of the pipe P, the two holding members 31a, The water yarn Y is attached to 31b, and the remaining holding members 31a and 31b are attached between the two holding members 31a and 31b with reference to the water yarn Y, but this is not restrictive.

  For example, over the entire length of the repair section, a water yarn Y having both ends fixed to a member different from the holding members 31a and 31b is stretched, and all the holding members 31a and 31b are attached to the inner wall surface P1 based on the water yarn. It may be attached. Alternatively, the holding members 31a and 31b may be individually positioned and attached to the inner wall surface P1 of the pipeline P without stretching the water yarn Y.

  Further, in the above-described embodiment, the plurality of holding members 31a and 31b are arranged along the length direction of the pipe line P, and the reference members 33a and 33b are attached to the plurality of holding members 31a and 31b. Although the members 33a and 33b are attached to the inner wall surface of the pipe P, the present invention is not limited to this. For example, you may attach directly to the inner wall face P1 of the pipe line P, aligning holding member 31a, 31b.

  In the above-described embodiment, the two reference members 33a and 33b are arranged in the pipe P, and the recesses 13 of the members 2a and 2b are engaged with the reference members 33a and 33b, respectively. Although the alignment in the circumferential direction of the pipe line P of 2a, 2b was performed, it is not restricted to this, Only one member is aligned among member 2a, 2b, and the other member of member 2a, 2b The reinforcing member 2 may be formed by attaching the members 2c and 2d to the one of the members 2a and 2b.

  In the above-described embodiment, a plurality of holding members 31a and 31b arranged along the length direction of the pipe P are attached to the inner wall surface P1 of the pipe P, and the reference members are respectively attached to the holding members 31a and 31b. Although the reference members 33a and 33b are attached to the inner wall surface P1 by attaching 33a and 33b, the invention is not limited to this. For example, unlike the above-described embodiment, the reference members 33a and 33b have attachment portions to the inner wall surface P1 of the pipe P, and the reference members 33a and 33b may be directly attached to the inner wall surface P1. Good.

  In the above-described embodiment, the pipe P is a substantially circular pipe, and the inner wall surface P1 of the pipe P is repaired over the entire circumference. However, the present invention is not limited to this, and the pipe wall P in the circumferential direction of the wall surface of the pipe Only a part may be repaired. For example, in one modification, as shown in FIG. 12, the pipe Q for repair is a so-called horseshoe-shaped pipe. That is, the pipe line Q is formed in an arch shape in a portion from the upper part to both side parts as viewed from the length direction, and is formed in a curved surface that is gently curved in the bottom part. And when the pipe line Q is such a shape, only the part which became the arch shape except the bottom part among the inner wall surfaces Q1 of the pipe line Q is repaired.

  Here, in this modification, the reinforcing member 102 is a member 102a that forms a lower right portion, a member 102b that forms a lower left portion, and a member that forms an upper right portion as viewed from the direction of FIG. 102c and the member 102d which forms the upper left part are comprised by four members. Then, the members 102a and 102b are aligned with the reference members 33a and 33b and disposed in the pipe line Q, and are fixed to the inner wall surface Q1 of the pipe line Q by the anchor member 35. Thereafter, the members 102c and 102d are attached to the members 102a and 102b, and fixed to the inner wall surface Q1 of the pipe line Q by the anchor member 35. FIG. 12 shows a state corresponding to FIG. 11A when the horseshoe-shaped pipe P is repaired.

2 Reinforcing members 2a to 2d members 3 Inner surface members 13 Recesses 31a and 31b Holding members 33a and 33b Reference members 102 Reinforcing members 102a to 102d members

Claims (6)

A reinforcing member attaching step for attaching a plurality of reinforcing members, each extending along the circumferential direction of the pipe line, to the inner wall surface of the pipe line at intervals along the length direction of the pipe line;
A covering member attaching step of attaching a plurality of covering members covering the inner wall surface of the conduit to a frame formed by the plurality of reinforcing members, and a repair method for a conduit comprising:
The reinforcing member attaching step includes
A reference member attaching step for attaching a reference member that is common to the plurality of reinforcing members and serves as a reference for the positions of the plurality of reinforcing members in the circumferential direction of the pipe line to the inner wall surface;
A positioning step of positioning the plurality of reinforcing members using the reference member;
And a fixing step of fixing the plurality of positioned reinforcing members to the inner wall surface. The reference member is a rod-shaped member extending along the length direction of the pipeline,
The reinforcing member attaching step includes
Prior to the reference member attaching step, holding the plurality of holding members for holding the reference member on the inner wall surface at a larger interval than the plurality of reinforcing members in the length direction of the pipe line It further includes a member mounting process,
The pipe repair method according to claim 1, wherein, in the reference member attaching step, the reference member is attached to the inner wall surface by attaching the reference member to the plurality of holding members. The reinforcing member attaching step includes
A yarn tensioning step of tensioning yarns positioned at two points separated from each other in the length direction of the pipeline in the pipeline;
3. The pipe repair method according to claim 2, wherein in the holding member attaching step, at least a part of the plurality of holding members is attached to the inner wall surface based on the position of the yarn. .   The conduit according to any one of claims 1 to 3, wherein the reinforcing member attaching step further includes a removing step of removing the reference member from an inner wall surface of the conduit after the fixing step. Repair method. In the reinforcing member, a plurality of recesses for attaching the plurality of covering members are formed along the circumferential direction of the pipe line,
The reference member is configured to be engageable with the recess,
5. The conduit according to claim 4, wherein, in the positioning step , the plurality of reinforcing members are positioned by engaging recesses corresponding to each other of the plurality of reinforcing members with the reference member. Repair method.   The pipe line repair method according to claim 5, wherein the reference member is a substantially cylindrical member that can be engaged with the concave portion.

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