JP2001090173A - Method of repairing conduit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of repairing a conduit, which dispenses with pressure-control measures such as assembling of timbering or application of hydraulic pressure in the injection of a back-filling material and can impart a high strength in the application of an existing pipe heavily damaged by corrosion or the like even by use of an inexpensive back-filling material having a relatively low strength. SOLUTION: As a repairing material to be arranged along the inside surface of an existing pipe, a repairing material 1 is mainly composed of a plurality of rectangular surface materials 11 having a protruding part 11a protruding to one side on each long edge and a reinforcing member 121 of high rigid material having the form circumferentially divided into a plurality of pieces of an annular body substantially similar to the sectional form of a conduit to be repaired and also having a plurality of cutout parts 121a formed on the inner side, wherein an annular reinforcing material is integrated to the circumference of a cylinder consisting of a plurality of surface materials within a manhole or existing pipe by fitting the protruding part 11a to each cutout part 121a. Such repairing materials 1 are axially connected while assembling, whereby the strength of the repairing material 1 itself is improved by leaps and bounds, compared with in the past, so that the repairing material 1 itself is resistant to the injection pressure of a back-filling material, and the strength of the conduit after repair is assigned thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing an existing pipeline such as a sewer pipeline and a repair material used for the method, and more particularly to a method for repairing a pipe having a diameter of 800 that allows a person to work inside the pipeline.
The present invention relates to a pipe repair method and a repair material suitable for repairing a large-diameter pipe having a diameter of not less than mm.

[0002]

2. Description of the Related Art For example, as a method of repairing a large-diameter pipe of a sewer without cutting it, conventionally, a strip-shaped profile made of vinyl chloride having a rib formed on one side is spirally wound in an existing pipe to form a pipe. The backing material is injected between the existing pipe and the profile with the support material assembled from the inside, or a slightly wide strip of vinyl chloride is also spirally wound inside the pipe. In order to keep the backing material in line with the inner surface of the existing pipe and to lower the injection pressure when injecting the backfill material between the existing pipe and the inner surface of the existing pipe, fill the top of the inner surface of the existing pipe before winding the strip. Attach a spacer to create a space for the material injection hose, or draw a polyethylene tube with studs into the existing tube and apply water pressure to the tube when filling the backfill material Thus, the method and the like are known to prevent the deformation of the tube.

[0003]

By the way, in the above-mentioned conventional method for repairing a pipeline, a backing material is assembled, a water pressure is applied, or a hose for injecting the backfill material in advance. It requires a great deal of labor and time, such as providing a spacer for passing through, and the cost is enormous.

[0004] In addition, in the conventional method for repairing a pipeline,
In any case, the strength of the repair member itself is low and the structure is such that the required strength is obtained by integration with the backfill material. Therefore, a rib is attached to the surface of the repair member such as a band-shaped profile that is in contact with the backfill material. It is necessary to arrange them densely, and there is a problem that the backfill material is not sufficiently distributed due to the existence of the large number of ribs. Here, in order to solve the problem and to reduce the injection pressure of the backfill material, the fluidizing material is added to the backfill material, but the cost increases accordingly. is there. Furthermore, since the required strength depends on the backing material side, there is a disadvantage that the strength of the backing material is required, resulting in an expensive price. Furthermore, since the strength of the repair member itself is low, it is not suitable for repairing when the existing pipe is severely damaged and its strength is significantly reduced.

The present invention has been made to solve various problems in such a conventional pipe line repair method at once.
The backfill material can be sufficiently inserted between the existing pipe and the repair member without the need for pressure-resistant measures such as setting up support or applying water pressure when pouring the backfill material, and without adding fluidizing material. It can be spread, and even if the backfill material is lower in strength than the conventional one and the cheaper backfill material is used, it can be applied to existing pipes with severe pain due to corrosion etc. Repair method of the pipeline which can make the strength of the pipe sufficiently high,
The purpose is to provide pipe repair materials suitable for use in such repair methods.

[0006]

In order to achieve the above object, a method for repairing a pipeline according to the present invention is to provide a repairing member capable of being carried in from a manhole by using an inner peripheral surface of the existing pipe in the manhole or the existing pipe. It is a method of repairing a pipe line that is assembled into a tubular repair material along with and inserted into an existing pipe, and a backfill material is injected into a gap between the repair material and the existing pipe, wherein the repair member includes:
A reinforcing member made of a high-rigidity material having a shape obtained by dividing an annular body substantially similar to the cross-sectional shape of an existing pipe into a plurality in the circumferential direction and having cutouts formed at predetermined intervals on an inner circumferential side thereof. A plurality of resin-made surface materials having a substantially U-shaped cross section, each having a protruding portion projecting to one surface side along each of the strip-shaped long side portions with respect to the notch portion, are provided so as to be adjacent to each other. Each of the surface members and the reinforcing material are integrated with each other by inserting the protruding portions, and a plurality of the reinforcing members are joined and integrated in the circumferential direction in the manhole or the existing pipe, thereby forming a plurality of the reinforcing members. Assembling a cylindrical repair material in which a plurality of annular reinforcing materials are integrated around a cylindrical body of a predetermined length formed by a strip-shaped surface material, and joining a plurality of the repair materials axially to each other To the length of the pipe to be repaired, and the repair material after joining and the existing pipe Characterized by injecting back-filling material between (claim 1).

Further, the pipe repair material according to the second to fourth aspects of the invention is a repair material suitable for use in the method according to the first aspect of the present invention. The road repairing material forms an inwardly projecting portion at each end of the projecting portion on both sides of each surface material, while the notch of each reinforcing member fits the projecting portion and the projecting portion at the tip. It is characterized by being substantially T-shaped so as to fit.

[0008] The pipe repairing material according to the third aspect of the present invention employs a characteristic structure in which a sealing member is interposed between adjacent surface materials.

Further, in the pipe repair material according to claim 4, a plurality of through-holes penetrating the repair material in the axial direction are formed in the arc-shaped reinforcing members, and these reinforcing members are joined and integrated in the circumferential direction. It is characterized in that the annular reinforcing members are joined and integrated in the axial direction through the respective through holes.

According to the present invention, by providing the repair material itself with sufficient strength, it is not necessary to form a support or apply water pressure to prevent deformation of the repair member due to pressure at the time of filling the backfill material. , It can provide sufficient strength to existing pipes with severe pain such as corrosion, and it is not necessary to arrange many ribs densely to obtain strength by integrating with backfill material. Therefore, it is intended to facilitate the flow of the backfill material between the repair member and the existing pipe without adding a fluidizing material.

That is, in the present invention, as a repairing material disposed along the inner peripheral surface of the existing pipe, a strip-shaped resin surface material having a U-shaped cross section, and an outer peripheral side of the surface material, that is, in the existing pipe, A material composed of a reinforcing material made of a high-rigidity material integrated with the surface facing the surface is used, and the surface material and the reinforcing material have shapes and dimensions that can be carried in from the manhole. The reinforcing member has a shape obtained by dividing an annular body substantially similar to the cross-sectional shape of the existing pipeline to be repaired in the circumferential direction, and by joining and integrating the annular body surrounding the cylindrical body made of a plurality of surface materials. Therefore, the strength of the repair material itself is significantly improved compared to the conventional, and the strength of the repair material itself does not cause harmful deformation by sufficiently withstanding the pressure at the time of filling the backfill material, In addition, after repair, it plays a role against external water pressure or earth pressure. Therefore, sufficient strength can be provided even when used for an existing pipe with severe corrosion or the like, without particularly increasing the strength of the backfill material. Also, by increasing the strength of the repair material itself, it is not necessary to provide extra ribs on the contact surface of the repair material with the backfill material so that it can be integrated with the backfill material. It does not hinder its flow.

In the present invention, the high-strength repair material as described above is composed of a strip-shaped surface material and an arc-shaped reinforcing member, which are carried in from a manhole and formed into a cylindrical shape in the manhole or an existing pipe. Because it can be assembled, a large-diameter pipeline can be configured without performing digging.

[0013] When the pipeline repair material according to the second aspect of the present invention is used as the pipeline repair material used in the above-described method of the present invention, the projecting portions on both sides of the surface material have projecting portions projecting inward. In addition, by forming the notch portion of the reinforcing member into a substantially T-shape, when each of the protruding portions of the surface materials adjacent to each other is inserted into one notch portion, each surface material becomes It is difficult to separate from the reinforcing member, and the work of integrating each surface material and the reinforcing member and assembling it into a cylindrical shape as a whole becomes easy.

According to the third aspect of the present invention, when a sealing member is interposed between the surface materials adjacent to each other, the sealing property of the space for filling the backfill material is improved, and after the repair, the surface material is improved. Can be improved in watertightness.

Further, as in the invention according to claim 4, a plurality of through-holes penetrating in the axial direction are formed in each arc-shaped reinforcing member, and these are joined together in the circumferential direction to form an annular reinforcing member. When the members are integrated in the axial direction through the through holes, the strength of the repair material is increased in both the radial direction and the axial direction, and the above-described operation and effect can be further ensured.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. Here,
The case where the repair target pipe has a circular cross section will be described.

FIG. 1 is a partial cross-sectional view showing a state in which a plurality of units of a repair material used in a method for repairing a pipeline to which the present invention is applied are joined to each other in an axial direction, and FIG. It is the principal part expanded sectional view cut | disconnected.

One unit of the repair material in this example, that is, the repair material unit 1 has a cylindrical shape with a length L as a whole, and includes a plurality of, for example, about 48 resin surface materials 11, Each surface member 11 is composed of a plurality of reinforcing rings 12 arranged along the periphery thereof in a state of being combined in a cylindrical shape.
Reference numeral 2 denotes a ring-shaped assembly in which three arc members 121 to be described later are mutually joined and integrated in the circumferential direction via a circumferential connection fitting 122. In addition, each surface material 1
1, a water-swelling rubber 11 for improving watertightness.
d is inserted.

The surface material 11 is made of, for example, high-density polyethylene. FIG. 3 (A) is a perspective view, and FIG. 3 (B) is an enlarged sectional view taken along line AA of FIG. A protruding portion 11a protruding to one surface side is formed along each of the two long side portions, and each protruding portion 11a has a substantially U-shaped cross section in which a protruding portion 11b protruding inward is formed. I have. A recess 11c is formed on the outer side surface of each protrusion 11a, and the water-swellable rubber 11d is interposed in a state of being fitted into each recess 11c of the surface material 11 on both sides.

Each of the arc members 121 constituting the reinforcing ring 12 is a high-rigidity member using a steel material having a uniform thickness, and has an arc shape obtained by dividing the circumference into １ ／. 4 (A) is a front view of the arc member 121,
As shown in the partial enlarged view of FIG. 3B, a plurality of T-shaped notches 121a having wide portions Wb formed on the inner side of the circular arc at regular intervals are formed on the inner side of the arc. In addition, a through hole 121b penetrating in the axial direction (thickness direction) is formed between the notches 121a. For example, four reinforcing rings 12 are used for one reinforcing member unit 1.

As shown in FIG. 1, a structure in which the arc members 121 are joined and integrated in the circumferential direction to form the reinforcing rings 12 is such that a circumferential connection metal fitting 122 is applied to abutting portions of the arc members 121. With the position of the through hole formed in the metal fitting 122 and the position of the through hole 121b of each of the circular arc members 121 on both sides of the metal fitting 122, the metal fitting 122 and the circular arc members 121 on both sides thereof are integrated by bolts and nuts. It is performed by concluding. Note that the circumferential connection metal fitting 122 also has the protruding portion 11 of the surface material 11.
The notch part in which a fits is formed.

As shown in FIG. 2, the surface material 11 and the reinforcing ring 12 are integrated with each other by forming the projections 11a of the surface material 11 adjacent to each other in the notches 121a formed in the respective arc members 121. Done by inserting each,
At this time, the protruding portion 11b at the tip of each protrusion 11a
Is a wide portion W formed on the back side of the notch 121a.
By fitting into b, each surface material 11 can be prevented from detaching from the reinforcing ring 12 by its own weight or the like.

Each reinforcing ring 1 in the repair material unit 1
The two members are joined in the axial direction in a state where a pipe-shaped spacer 123 is interposed between the reinforcing rings 12 as shown in FIG. This is performed by inserting a shaft 124 having male threads formed at both ends so as to penetrate through the through holes 121b, and fastening nuts 125 to the male threads.

Then, as shown in the circumferential sectional view of FIG. 6, both ends of the surface materials 11 of the repair units 1 adjacent to each other are joined together as shown in FIG. The resin ring 111 is divided into three parts in the circumferential direction so as to be in contact with each other and straddle the contact part, and the resin ring 111 is fitted in the circumferential direction of the resin ring 111. As fitting means, the protrusions 111a provided at both ends of the resin ring 111 are passed through holes 112a provided at both ends of the resin ring 112, and the protrusion 1
What is necessary is just to crush the tip of 11a with a suitable jig so that it may not fall off. Male threads are provided at both ends so that the reinforcing rings 12 of the repair unit 1 that are in contact with each other penetrate through the through holes 121b and the spacers 126 with the pipe-shaped spacers 126 interposed therebetween. This is performed by inserting the formed shaft 1127 and fastening the nut 128 to each male screw. Note that the resin ring 111 is not limited to the above-described structure, and may have a structure whose cross-sectional view is illustrated in FIGS.

The surface material 11, the arc-shaped member 121, and the like, which are components of the repair material unit 1 described above, are, for example, provided that the repair target pipe has a first manhole. 900mm in diameter of the straight part
When carrying in, only the manhole cover is expanded as necessary. Further, the components constituting the repair material unit 1 do not need to be individually carried into the manhole or the existing pipeline, but can be carried in a suitably assembled size that passes through the straight portion of the manhole. . That is, as shown in, for example, a schematic perspective view of FIG. 8, the arc-shaped member 121 is carried in a state in which it is assembled into a 1/3 cylindrical body in which the surface material 11 is integrated without being joined in the circumferential direction. You may.

Each of these parts or subassemblies is carried into a manhole and assembled into a cylindrical repair material unit 1 having a length L in the manhole or existing pipe. Joining in the axial direction results in the state of FIG. Further, in this embodiment, the assembling of the repair unit 1 and the joining work in the axial direction are performed in the existing pipe by inserting a sewage isolation device into a region where sewage does not flow, and in the sewage isolation region. . Hereinafter, the specific method will be described.

FIG. 9 shows a state in which the sewage isolation device 2 is inserted into the existing pipe P, and the surface material 11 is formed in a sewage isolation region formed therearound.
FIG. 10 is a schematic cross-sectional view showing a state where the cylindrical repair member unit 1 is assembled using components such as the arc-shaped member 121 and the like, and FIG. 10 is an AA cross-sectional view thereof.

The sewage isolation device 2 includes a water stop plug 21 having a cylindrical main body 21a provided with an outer seal 21b and an inner seal 21c, and a cylindrical main body 21 of the water stop plug 21.
a sewage isolation cylinder 22 attached to the downstream end face of
And the subject.

The outer seal 21b and the inner seal 21c are seals that expand when air is supplied from the outside. The outer seal 21b is a plurality of donut-shaped hoses provided along the outer periphery of the cylindrical main body 21a. When the air is supplied and inflated, it comes into water-tight contact with the inner surface of the existing pipe P. The inner seal 21c is a bag-like body whose periphery is air-tightly fixed to the inner surface of the cylindrical main body 21a. The inner seal 21c seals the inner space of the cylindrical main body 21a in a water-tight manner by supplying air and expanding. Can be.

The sewage isolation cylinder 22 is attached to the water stop plug 21 in the existing pipe P. The installation work is performed in a state where air is supplied to the outer seal 21b and the inner seal 21c of the water stop plug 21 to temporarily stop the flow of the sewage in the existing pipe P, and the sewage may be touched in the work. Absent. After the sewage isolation cylinder 22 is attached, the air in the inner seal 21c is discharged. As a result, the sewage flowing through the existing pipe P is discharged into the tubular main body 21 a of the water stop plug 21 and the sewage isolation tubular body 22.
And a region where the sewage does not flow around the sewage isolation cylinder 22, that is, a sewage isolation region is formed.

As shown in FIG. 9, the sewage isolation device 2 as described above is provided with the water stop plug 21 in the existing pipe P close to and upstream of the manhole H located upstream of the repair target pipeline. With the sewage isolation tubular body 22 mounted so as to be located at the invert portion of the manhole H, the surface material 11, the arc member 121, and the like constituting the repair material unit 1 are placed inside the manhole H. , The projecting portion 11a of each surface material 11 is inserted into the notch portion 121a of the arc member 121, and each arc member 121 is inserted.
Are joined together in the circumferential direction to assemble the reinforcing ring 12, so that a plurality of reinforcing rings 1 made of a high-rigidity material are formed around the surface member 11 assembled as a whole in a cylindrical shape.
2 is completed to complete a cylindrical reinforcing member unit 1. When one repair material unit 1 is completed, the repair member unit 1 is moved to the downstream side of the existing pipe P, the next repair material unit 1 is assembled in the same procedure as described above, and the repair member unit 1 previously assembled is assembled. Are joined in the axial direction. When the repair material unit 1 is moved downstream after assembling, the wire 3 may be pulled from the downstream side as shown in FIG.

When a joined body of the repair material unit 1 having a length equal to the length of the pipe to be repaired is obtained by the above-described operation, for example, the end mold is attached to both ends thereof, and the outer peripheral surface of each repair material unit 1 is attached. A backfill material such as mortar is injected between the pipe and the inner peripheral surface of the existing pipe P. After injecting this backfill material, each surface material 1
The one protrusion 11a also plays the role of a rib for integration with the backfill material.

The point to be particularly noted in the above method is that
Each repair material unit 1 assembled in a cylindrical shape in the manhole H and the existing pipe P communicating with the manhole H has a structure in which a plurality of reinforcing rings 12 made of a highly rigid material such as steel are integrated along the outer periphery. The strength of the backing material itself is high, and it can withstand the filling pressure of the backing material sufficiently. The construction method for is unnecessary. In addition, since the strength of the repair material unit 1 itself is high, even if the strength of the existing pipe P is weakened due to corrosion or the like, it is possible to provide sufficient strength by repair, and to provide a high strength as a backfill material. It is no longer necessary to use any of them, and furthermore, ribs provided on the repairing material in order to achieve integration with the backfill material. In the above embodiment, the density of the protruding portions 11a is lower than that of the conventional one. As a result, without adding fluidizing material to backfill material,
It is possible to sufficiently spread the backfill material between the repair material and the existing pipe P.

When the method using the sewage isolation device 2 is adopted as in the above embodiment, the work for assembling the repair material unit 1 and joining in the axial direction can be performed in the sewage isolation region. In addition, since there is no need to stop the flow of sewage through the assembling work, the sewage with a large flow rate or the sewage with a fast flow can be operated without danger.

According to the present invention, the number of surface materials 11 forming the repair material unit 1, the number of divisions of the reinforcing ring 12, the joining structure of the repair material units 1 in the axial direction, and the like are as follows.
It is needless to say that other numbers or structures can be adopted without being limited to the above-described embodiment.

In the above embodiment, the case where the existing pipe has a circular cross section has been described. However, the present invention is equally applicable to, for example, a rectangular culvert (box culvert) and a horseshoe culvert (arch culvert). In that case, the repair material unit is replaced with a circular arc member and the number of annular bodies similar to the above-mentioned cross-sectional shape is appropriately set so that the repair material unit has a shape corresponding to the cross-sectional shape of the culvert by assembling. In addition to the divided members, when the surface material is applied to, for example, a rectangular culvert, a material having a cross-sectional shape different from that of the others at the corners may be used.

[0037]

As described above, according to the present invention, according to the present invention, a repair material is disposed along the inner surface of an existing pipe, and a backfill material is injected between the repair material and the existing pipe. In the repairing method, as a repairing material, a plurality of surface materials having a substantially U-shaped cross section in which a protruding portion projecting to one side along each long piece is formed as a whole as a repairing material, and a cross section of a pipeline to be repaired. In the shape obtained by dividing the shaped annular body into a plurality in the circumferential direction, a reinforcing member having a notch formed on the inner peripheral side thereof is mainly constituted, and these are arranged in a manhole and an existing pipe communicating therewith, each of the reinforcing members. A predetermined length consisting of a plurality of strip-shaped surface materials is inserted by inserting the protrusions of the surface materials adjacent to each other into the notch portion and integrating them together, and by integrating the reinforcing members in the circumferential direction. Multiple annular reinforcing members are integrated around the cylindrical body Since the cylindrical repair material is assembled and sequentially joined in the axial direction so as to obtain the required length, the strength of the repair material itself is significantly higher than the conventional pipe repair method, It can withstand the injection pressure of backfill material sufficiently, and it is not necessary to construct a support like the conventional construction method or apply pressure from the inside such as applying water pressure, and it is possible to greatly reduce the construction cost. it can.

In addition, even when the repair material is applied to repair an existing pipe whose strength has been significantly reduced due to corrosion or the like, sufficient strength can be provided without using a high-strength backfill material. And it is not necessary to arrange a large number of ribs densely to obtain strength by integration with the backfill material as in the past, so that the back The filling degree of the filling material can be increased, and an inexpensive material can be selected as the back filling material.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional front view showing a state in which a plurality of repair material units 1 used in an embodiment of the present invention are joined in an axial direction.

FIG. 2 is an enlarged sectional view of a main part taken along a plane perpendicular to the axis of FIG. 1;

3A and 3B are explanatory views of a surface material 11 used in the repair material unit 1 of FIG. 1, wherein FIG. 3A is a perspective view, and FIG.
FIG.

4A and 4B are explanatory views of an arc member 121 used in the repair material unit 1 of FIG. 1, wherein FIG. 4A is a front view and FIG. 4B is a partially enlarged view thereof.

FIG. 5 is a sectional view of a main part of the repair material unit 1 taken along a direction parallel to an axis thereof.

FIG. 6 is a sectional view of a main part of the repair material unit 1 in a circumferential direction.

FIGS. 7A to 7C are cross-sectional views showing other structural examples of the surface material 11 and the resin ring 111 of the repair material unit 1 that can be used in the method of the present invention.

FIG. 8 is a schematic perspective view showing a state in which the surface material 11 is assembled without joining the arc members 121 of the repair material unit 1 in the circumferential direction.

FIG. 9 is a schematic cross-sectional view showing a state in which the sewage isolation device 2 is inserted into the existing pipe P in the pipe line repair method to which the present invention is applied.

FIG. 10 is a sectional view taken along line AA of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Repair material unit 11 Surface material 11a Projection part 11b Projection part 12 Reinforcement ring 121 Arc member 121a Notch part 121b Through hole 122 Circumferential connection fitting 123,126 Spacer 124,127 Shaft 125,128 Nut 2 Sewer separator 21 Stop Water plug 21a Cylindrical body 21b Outer seal 21c Inner seal 22 Sewage isolation cylinder H Manhole P Existing pipe

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Futoshi Makimoto 511-10 Inaya, Kakogawa-cho, Kakogawa-shi, Hyogo (72) Inventor Katsuhiko Higashi 2-3-6 Mizuo, Ibaraki-shi, Osaka (72) Inventor Masafumi Katata Osaka 1-4-1 Kishibekita, Suita-shi, F F-term (reference) 2D063 BA19 EA06 3H025 EA01 EB13 ED02 EE05

Claims (4)

[Claims] 1. A repair member which can be carried in from a manhole is assembled into a tubular repair material along the inner peripheral surface of the existing pipe in the manhole or the existing pipe, and inserted into the existing pipe. A method of repairing a pipeline for injecting a backfill material into a gap with a pipe, wherein the repair member has a shape obtained by dividing an annular body having a substantially similar shape to a cross-sectional shape of an existing pipe into a plurality of pieces in a circumferential direction, and In contrast to the notch portion of the reinforcing member made of a high-rigidity material in which notch portions are formed at predetermined intervals on the inner peripheral side thereof, there is a protruding portion projecting to one surface side along each long side portion of the strip shape. A plurality of resin-made surface materials having a substantially U-shaped cross section formed are inserted into the respective protrusions of the surface materials so as to be adjacent to each other, and the respective surface materials and the reinforcing material are integrated with each other, In the manhole or existing pipe, several of the above reinforcing members are By joining and unifying, assembling a tubular repair material in which a plurality of annular reinforcing materials are integrated around a tubular body having a predetermined length formed by a plurality of strip-shaped surface materials, and repairing the same. A method of repairing a pipeline, comprising joining a plurality of materials in the axial direction to each other to obtain a repair target pipeline length, and then injecting a backfill material between the repaired material after the bonding and an existing pipe. 2. A repair material used in the method for repairing a pipeline according to claim 1, wherein an inwardly projecting portion is formed at a tip of each of the projecting portions on both sides of each of the surface materials. The notch portion of each of the reinforcing members has a substantially T-shape such that the protruding portion and the protruding portion at the tip end thereof are fitted. 3. A repair material for use in the method of repairing a pipeline according to claim 1, wherein the repairing material is provided between the surface materials adjacent to each other.
A pipe repair material characterized by having a sealing member interposed therebetween. 4. A repair material used in the method of repairing a pipeline according to claim 1, wherein each of the reinforcing members has a plurality of through holes penetrating in the axial direction of the repair material. A pipe repair material characterized in that annular reinforcing members formed by joining and integrating members in the circumferential direction are joined and integrated in the axial direction through the respective through holes.