JP2003035394A - Lining method, lining material and connecting structure of lining material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lining material capable of making the lining material which can maintain the shape retention of a flange and hardly produce a gap after the application. SOLUTION: A flange part 12 is formed in a multilayer and a resin absorbing material 14 is provided on a side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lining method, a lining material and a connecting portion structure of the lining material used in sewers and the like.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIG.
A sewer system in which a branch pipe 2 such as a clay pipe having a small diameter (for example, a diameter of about 15 cm) is connected to a main pipe 1 such as a clay pipe having a large diameter (for example, a diameter of about 20 cm) arranged in the ground through a connecting pipe 3. It has been known.

The branch pipe 2 extends toward a general household or a shoulder, and guides sewage from the ordinary household or rainwater from the shoulder to the main pipe 1.

Further, since the branch pipe 2 has a narrower diameter than the main pipe 1, the overall diameter is relatively thin, and the branch pipe 2 is guided to the main pipe 1 in a bent state, and is smaller than the main pipe 1. However, there is a problem that cracks are likely to occur such as being guided toward the ground from the surface of the ground, and sewage easily leaks from the cracks.

Therefore, it is considered to arrange the lining pipe 4 made of a thermosetting resin on the inner wall surface of the branch pipe 2. Incidentally, there is a main tube 1 having an inner wall surface provided with a lining tube 5 made of the same material. Below, lining tube 4
Are referred to as side liners and the lining pipe 5 is referred to as an all liner.

Prior to construction, each of the liners 4 and 5 is made of an apparent cloth or the like, and has a multi-layered structure such as an outer tube having high watertightness from the surface side, glass fiber, polybutylene terephthalate fiber, or the like.

The liners 4 and 5 as described above are connected to the inner wall surface of the main pipe 1 by inserting, inverting and steam heating the side of the all liner 5 in advance so that the liner 4 and 5 become seamless pipes such as earth pipes. After the realization, the main line 1 and the all liner 5 and the branch line 2 are connected (branched) to the all liner 5
The opening is formed by cutting out the side liner 4 from this state, and the side liner 4 is inserted / inverted / steam heated in the same manner as the all liner 5 to be hardened in an intimate contact with the inner wall surface of the branch pipe 2 to cause wrinkles and the like in the bent portion. Do not realize piping.

On the other hand, at the connecting portion of the all liner 5 and the side liner 4 as described above, since the opening is cut and formed in the all liner 5, there is a possibility that sewage leakage may occur if a gap is generated. Basically, since the connection is made near the upper part of the main pipe 1, there is almost no fear of leakage from this connection portion, but it is of course preferable that there is no gap.

Therefore, as shown in FIG. 5A, a collar 6 made of hard resin is provided at the end of the side liner 4,
As shown in (B), it is considered that the collar 6 covers the peripheral edge of the opening and the end of the side liner 4 to prevent the occurrence of a gap.

[0010]

By the way, in the side liner 4 configured as described above, since the collar 6 is made of a hard resin, there is a problem that a gap P is likely to occur at the connecting portion. It was happening.

This is because the main pipe 1 has a linear shape in the horizontal direction and a circular shape in the vertical direction, so that the flange 6 must be preliminarily formed with a warp close to the peripheral shape of the opening.

On the other hand, when the collar 6 is installed, the shape of the collar 6 must match the inner wall surface shape of the main pipe 1 (the inner wall surface shape of the all-liner 5) while rotating the collar 6 around the opening center. However, it is difficult to realize a strict match, and this gap causes a gap P.

In order to solve the above problems, it is an object of the present invention to provide a lining method, a lining material and a connecting portion structure of the lining material, which has a collar in which a gap does not occur in the connecting portion.

[0014]

In order to achieve the object, a lining method according to claim 1 is a lining method for repairing a crack at a root portion of a main pipe and a branch pipe, wherein the hat and the The gist of the invention is to dispose a resin between the main pipe or the branch pipe and to fill the resin into the crack while pressing the brim toward the branch pipe and then to cure the resin.

The lining method according to a second aspect is characterized in that the cloth is impregnated with the resin and arranged.

A lining material according to a third aspect of the present invention is a lining material including a liner body and a brim provided so as to surround an open end of the liner body, wherein the brim is made of a resin absorbing material. Is the gist.

A lining material according to a fourth aspect of the present invention is a lining material including a liner body and a brim provided so as to surround an open end of the liner body. The gist is that the resin absorbent material is provided on one surface side.

A lining material according to a fifth aspect is characterized in that the first layer of the collar is made of a hard resin material.

A lining material according to a sixth aspect is summarized in that the first layer of the brim is made of a soft cloth material.

A lining material according to a seventh aspect of the present invention is summarized in that a hard shape-retaining material that maintains the shape of the opening end is provided at the opening end of the liner body.

The connecting portion structure of the lining material according to claim 8 comprises a main pipe arranged in the ground and a branch pipe connected to the main pipe, and the pipe is provided on the inner wall surface of the branch pipe. A flange provided with a resin absorbing material on at least a surface of the pipe which is arranged so as to surround the opening end of the pipe and is in close contact with the connection opening edge of at least the main pipe and the branch pipe is provided at the connection opening edge. The pipe and the resin-absorbing material are arranged so as to cure the pipe in a close contact state with the inner wall surface of the branch pipe, and at the same time, the resin-absorbing material is cured in a close contact state around the connection opening edge portion. That is the summary.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the lining material of the present invention will be described with reference to the drawings. Since the apparent overall configuration is the same as that shown in FIG. 6, the diagram of the overall configuration is omitted.

(First Embodiment) FIGS. 1 and 2 show a first embodiment of a lining material of the present invention.

In FIG. 1 (A), 10 is a side liner as a lining material which is piped on the inner wall surface of the branch pipe 2 (including the connecting pipe 3). Here the hat 20 (Fig. 1
(Refer to (A)) refers to a portion composed of the collar portion 12 and the liner body 11 located near the connecting portion thereof, in other words, the base portion around the connecting portion between the main pipe 1 and the branch pipe 2. The part corresponding to is shown.

As shown in FIG. 2, the side liner 10 includes a liner body 11 and a collar portion 12 provided at an end of the liner body 11.

The liner body 11 has two layers of an outer tube having a thermosetting property (or a photocuring property) from the outer surface side and a fiber material such as felt impregnated with a thermosetting material (or a photocuring material). It is composed of a structure, is soft as a whole at the time of construction, and hardens in an expanded state by heating (or light irradiation) of steam, hot water, or the like.

The brim portion 12 is a thin-walled base 13 which is formed by curing a thermosetting resin and conforms to the shape of the inner wall surface of the main pipe 1 (or the all-liner 5), and the side of the base 13 which is in close contact with the main pipe 1. A resin absorbent material 14 made of a fibrous material such as felt impregnated with a thermosetting material. The end of the liner body 11 is sandwiched between the base 13 and the resin absorbent material 14. .

The base 13 has a substantially cylindrical shape-retaining portion 13a.
And a flange-shaped collar 13b bent laterally from the edge of the shape-retaining portion 13a, and the shape-retaining portion 13a is branched from the opening of the main pipe 1 (matching the opening of the all-liner 5). It also serves as a positioning member when the flange portion 12 faces the opening edge portion 2 (opening edge portion of the connection pipe 3). Liner body 11
And the collar 13b are configured separately. Therefore, the length of the liner body 11 can be freely lengthened or shortened according to the state of the site. Further, in accordance with the on-site repair, the repair using the liner body 11, the collar 13b, and the resin absorbent body 14, the liner body 11 and the collar 13b.
It is possible to perform repairs by using only the collar 13b and the resin absorber 14.

In such a structure, the side liner 10 is such that after the flange portion 12 faces the branch pipe 2 from the main pipe 1 side,
The liner body 11 is inserted into the branch pipe 2 while being inverted, and then cured by heating with steam or warm water so that wrinkles do not occur in the bent portion of the branch pipe 2 and the liner body 11 closely contacts the inner wall surface of the branch pipe 2. It cures in the expanded state and the piping is complete.

At the time of this heating, the resin absorbing material 14 of the collar portion 12 hardens, so that no gap is generated between the base 13 and the all-liner 5, as shown in FIG. Moreover, the base 13 and the all-liner 5
It can serve as an adhesive material with.

At this time, since the resin absorbing material 14 is heated while pressing the collar portion 12 against the all-liner 5 side by a reversal heating tool (not shown), the surplus material protrudes from the peripheral portion of the collar 13b to the outside at the same time. , Between the all-liner 5 and the shape-retaining portion 13a, between the all-liner 5 and the branch pipe 2 (connection pipe 3), and further between the branch pipe 2 (connection pipe 3) and the main pipe 1, etc. Since it can be made to enter even a minute gap, it can function as a sealing material and an adhesive material for the entire connecting portion.

The surplus material protruding outside from the peripheral edge of the collar 13b connects the collar 13b and the all-liner 5 as if it gently absorbs the thickness of the collar 13b.

Therefore, the collar 12 is attached to the all liner 5
When it is located on the inner wall surface side, the problem that the collar 13b is rolled due to the flow velocity of the sewage is solved.
If the all-liner 5 is not piped, the above synergistic effect can be exerted on the inner wall surface of the main pipe 1.

Although not shown, when the collar portion 12 is located between the all liner 5 and the main pipe 1 (the pipe of the all liner 5 is located after the pipe of the side liner 10). The area near the opening of the all-liner 5 is gently raised without a steep rising step due to the wall thickness of the collar 13b, making it difficult to resist sewage.
It is possible to form a structure in which a gap is less likely to be generated between the outer wall surface of the and the flange portion 12.

(Second Embodiment) FIGS. 3 and 4 show a second embodiment of the lining material of the present invention.

In FIG. 3 (A), reference numeral 20 is a side liner as a lining material piped on the inner wall surface of the branch pipe 2.

As shown in FIG. 4A, the side liner 20 is provided with a liner body 21 and a collar portion 22 provided at the end of the liner body 21.

The liner body 21 has a two-layer structure of an outer tube having a thermosetting property from the outer surface side and a fiber material such as felt impregnated with a thermosetting material, and is soft as a whole at the time of construction. , Which cures in an expanded state by heating with steam (or hot water).

The brim 22 is provided on a relatively thick cloth base 23 such as felt and a surface of the cloth base 23 that is in close contact with the main pipe 1 and is made of a fiber such as felt impregnated with a thermosetting material. The resin absorbent material 24 is made of a relatively thin material, and the end of the liner body 21 is sandwiched between the cloth base 23 and the resin absorbent material 24.

The cloth base 23 and the resin absorbing material 24
The end of the liner body 21 is joined by sewing 25. Further, as shown in FIG. 4B, it is also possible to provide a shape-retaining member 26 made of a cylindrical hard resin near the end of the liner body 21.

In such a structure, the side liner 20 is inserted from the main pipe 1 side so that the collar portion 22 is aligned, the liner body 21 is inverted and inserted into the branch pipe 2, and then heated by steam or warm water. By hardening, wrinkles do not occur in the bent portion of the branch pipe 2 and the pipe is completed by hardening in an expanded state so as to be in close contact with the inner wall surface of the branch pipe 2.

Further, since the collar portion 22 is entirely made of cloth, it has a copying effect on the shape of the inner wall surface of the all liner 5 and does not require positioning work (rotation) like the hard collars 6 and 13b. You can

Further, when the collar portion 22 is heated, the collar portion 22
As shown in FIG. 3 (B), since the resin absorbent material 24 of No. 2 is cured, no adhesive is generated between the base 23 and the all-liner 5 and the adhesive material between the base 23 and the all-liner 5 is used. Can play a role as

At this time, since the resin absorbing material 24 is heated while pressing the collar portion 22 against the all-liner 5 side by a reversing heating tool (not shown), the surplus material protrudes from the peripheral portion of the base 23 to the outside. , All liner 5
And the liner body 21, between the all-liner 5 and the branch pipe 2
Since it can be inserted into a minute gap such as between the (connecting pipe 3) and between the branch pipe 2 (connecting pipe 3) and the main pipe 1, a sealing material and an adhesive agent for the entire connecting portion Can function as.

In addition, does the surplus material protruding from the peripheral portion of the base 23 to the outside during melting smoothly absorb the thickness of the base 23 between the base 23 and the all-liner 5 due to the contracting action during curing? Connect as.

Therefore, the collar portion 12 is attached to the all-liner 5
When it is located on the inner wall surface side, the problem that the base 23 is rolled up due to the flow velocity of the sewage is solved.
If the all-liner 5 is not piped, the above synergistic effect can be exerted on the inner wall surface of the main pipe 1.

Although not shown, when the collar portion 22 is located between the all liner 5 and the main pipe 1 (the pipe of the all liner 5 is located after the pipe of the side liner 20). Base 23 near the opening of all liner 5
It is possible to have a structure in which the wall is gently raised without a step difference due to the wall thickness of the wall, which makes it difficult for sewage to resist, and in which a gap is less likely to occur between the outer wall surface of the all-liner 5 and the collar portion 22. it can.

By the way, the above-mentioned base 23 may be omitted, and the collar portion 22 may be composed of only the resin absorbing material 24. In this case, it is preferable that the thickness of the resin absorbent material 24 is substantially equal to or larger than that of the base 23 described above from the viewpoint of ensuring strength.

[0049]

As described above, the lining method according to the first aspect is a lining method for repairing cracks at the roots of the main pipe and the branch pipe, and the hat and the main pipe or By arranging the resin between the branch pipe and the brim while pressing the brim toward the branch pipe and filling the resin into the cracks and then curing the resin, the repair can be performed easily and reliably.

In the lining method according to the second aspect of the present invention, the resin can be arranged more easily because the cloth is impregnated with the resin.

In the lining material according to the third aspect of the present invention, since the collar is made of the resin-absorbing material, it is possible to realize the thinning of the entire collar, and the lining material has no gap after the construction. be able to.

In the lining material according to the fourth aspect, since the collar is formed in multiple layers and the resin absorbing material is provided on one surface side thereof, the shape retention of the collar can be maintained, Moreover, it is possible to make the lining material in which gaps are less likely to occur after the construction.

In the lining material according to the fifth aspect, since the first layer of the collar is made of a hard resin material, the shape retention of the collar is kept high and the ease of construction is maintained. Although it is a material, it can be used as a lining material in which a gap is less likely to occur after construction.

In the lining material according to the sixth aspect, since the first layer of the collar is made of a soft cloth material, the shape retention of the collar is maintained to some extent and the ease of construction is maintained. Although it is a material, it can be a lining material that does not generate a gap after construction.

In the lining material according to the seventh aspect, since the liner body is provided with the hard shape-retaining material for maintaining the shape of the opening end at the opening end, the liner body is connected to the connection opening portion at the time of construction. The collar can be easily positioned.

In the connecting portion structure of the lining material according to the eighth aspect, the main pipe disposed in the ground and the branch pipe connected to the main pipe are provided, and the pipe is an inner wall surface of the branch pipe. And a flange provided with a resin-absorbent material on a surface that is provided so as to surround the opening end of the pipe and is in close contact with at least the connection opening edge of the main pipe and the branch pipe is disposed at the connection opening edge, By curing the pipe and the resin absorbing material in a close contact with the inner wall surface of the branch pipe, the resin absorbing material is cured in the close contact with the periphery of the connection opening edge, resulting in high adhesion. It can be a connection structure.

[Brief description of drawings]

FIG. 1 shows a lining material according to a first embodiment of the present invention, (A) is a perspective view of a main part of the lining material, and (B) is a cross-sectional view of a peripheral portion of the lining material after construction.

FIG. 2 is likewise a sectional view of a main part of a lining material.

3A and 3B show a lining material according to Embodiment 2 of the present invention, FIG. 3A is a perspective view of a main part of the lining material, and FIG. 3B is a cross-sectional view of a peripheral portion of the lining material after construction.

FIG. 4 is a sectional view of the main part of the (A) lining material,
FIG. 6B is a sectional view of a main part of a modified example of the lining material.

FIG. 5 shows a conventional lining material, (A) is a perspective view of a main portion of the lining material, and (B) is a cross-sectional view of a peripheral portion of the lining material after construction.

FIG. 6 is a perspective view of a main part with a part broken away showing a connection relationship between a main pipe and a branch pipe.

[Explanation of symbols]

10 ... Side liner (lining material) 11 ... Liner body 12 ... Tsubabe 13 ... Base 14 ... Resin absorbent material

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3H024 EA03 EB01 EC06 ED01                 3H025 EA03 EB13 EC01 EC15 ED02                 4F211 AD12 AD14 AD16 AD19 AD20                       AD25 AG08 AH43 SC03 SD04                       SD10 SD11 SD18 SD20 SD23                       SH06 SH18 SJ29 SN03 SP15

Claims (8)

[Claims] 1. A lining method for repairing a crack at a root portion of a main pipe and a branch pipe, wherein a resin is arranged between a hat and the main pipe or the branch pipe, and a collar is provided on the branch pipe. A lining method, characterized in that the resin is filled into the cracks while being pressed to the side and then cured. 2. The lining method according to claim 1, wherein the cloth is impregnated with the resin and arranged. 3. A lining material comprising a liner body and a collar provided so as to surround an open end of the liner body, wherein the collar is made of a resin absorbing material. 4. A lining material comprising a liner body and a brim provided so as to surround an open end of the liner body, wherein the brim is formed in multiple layers and a resin absorbing material is provided on one surface side thereof. A lining material that is characterized by being 5. The lining material according to claim 4, wherein the first layer of the collar is made of a hard resin material. 6. The lining material according to claim 4, wherein the first layer of the collar is made of a soft cloth material. 7. The hard shape-retaining material for maintaining the shape of the open end portion is provided at the open end portion of the liner body, according to any one of claims 3 to 6. Lining material. 8. A main pipe disposed in the ground and a branch pipe connected to the main pipe, wherein the pipe is arranged on an inner wall surface of the branch pipe and surrounds an open end of the pipe. A flange provided with a resin absorbing material on the surface of the main pipe and the branch pipe that is in close contact with the connection opening edge portion is disposed at the connection opening edge portion, and the pipe and the resin absorbing material are provided. When the pipe is hardened, the pipe is hardened in an intimate contact with the inner wall surface of the branch pipe, and at the same time, the resin absorbing material is hardened in an intimate contact around the edge of the connection opening. Construction.