JP2004291564A - Joining liner and construction method for repairing fluid transportation facility using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a construction method for repairing fluid transportation facilities in which the improvement of workability and the cost reduction can be realized by suppressing the thickness of a lining material to the utmost by making a reinforcing material or a spacer to load tensile force applied to the lining material, and at the same time, the integration of the lining material and a pipeline or a manhole can be realized. <P>SOLUTION: The construction method for repairing the pipeline (the fluid transportation facilities) 10 is executed by using a joining liner 1 which is composed by binding a nonwoven fiber to the inner/outer faces of a plastic film, and at the same time, by mounting the reinforcing material or the spacer on the outer face. The joining liner 1 is inserted into an existing pipe 10. After that, a uncured pipe lining material 11 is inserted into the joining liner 1. The pipe lining material 11 is cured in a state of applying the fluid pressure to the inside of the pipe lining material 11. A grout material 13 is filled between the joining liner 1 and the existing pipe 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a joint liner and a method of repairing a fluid transportation facility such as a pipeline or a manhole using the joint liner.
[0002]
[Prior art]
When a pipeline such as a sewer pipe, a water pipe, a gas pipe or a fluid transport facility such as a manhole becomes obsolete, the existing pipe or the inside of the existing manhole has an outer diameter smaller than the inner diameter of the existing pipe or the existing manhole. After inserting the pipe lining material or manhole lining material, a method of repairing the pipeline or manhole by filling grout material between the existing pipeline and the pipe lining material or between the existing manhole and the manhole lining material has been proposed. It has been put to practical use.
[0003]
For example, when repairing an aged pipe, a pipe lining material impregnated with an uncured thermosetting resin is reversely inserted into the pipe by fluid pressure, and then the pipe lining material is expanded by fluid pressure. While being pressed against the inner peripheral surface of the pipe, the pipe lining is heated with hot water or the like, and the thermosetting resin impregnated in the pipe lining is cured to form a rigid pipe in the pipe. BACKGROUND ART A gap between a rigid pipe and a pipeline is filled with a grout material such as cement milk or resin mortar.
[0004]
According to the above restoration method, since the pipe lining material as a hardened rigid pipe and the pipe are firmly connected by the grout material, loads such as earth pressure and live load acting as external pressure acting on the pipe are reduced by the pipe lining. Induces tensile force in the material. For this reason, a large tensile strength is required for the pipe lining material. Since a tensile force acts on the pipe lining material also by the internal pressure acting on the pipe line, a high tensile strength is similarly required for the pipe lining material in this case.
[0005]
Therefore, especially when the load acting on the pipeline is large or the pipeline diameter is large, it is necessary to increase the thickness of the pipe lining material.
[0006]
[Problems to be solved by the invention]
However, when the thickness of the pipe lining material is increased, handling of the pipe lining material becomes difficult, causing a problem that the workability is deteriorated and the cost is increased.
[0007]
In addition, there is also a problem that the bonding property between the pipe lining material and the grout material is poor, and the pipe lining material and the pipe line cannot be integrated well.
[0008]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is to minimize the thickness of a lining material by applying a tensile force acting on the lining material to a reinforcing material or a spacer, thereby improving workability. It is an object of the present invention to provide a connection liner capable of improving the cost and reducing the cost and integrating the lining material and the pipeline or the manhole, and a method of repairing a fluid transportation facility using the same.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is characterized in that a nonwoven fabric is bonded to the inner and outer surfaces of a plastic film, and a reinforcing material or a spacer is attached to the outer surface to form a bonding liner.
[0010]
According to a second aspect of the present invention, in the first aspect, the reinforcing member and the spacer are made of expanded metal or lath.
[0011]
According to a third aspect of the present invention, in the first or second aspect, the reinforcing member or the spacer is attached by heat welding or bonding a nonwoven fabric.
[0012]
The invention according to claim 4 is a method for repairing a fluid transportation facility constructed by using a bonding liner configured by attaching a nonwoven fabric to the inner and outer surfaces of a plastic film and attaching a reinforcing material or a spacer to the outer surface, After inserting the bonding liner into the existing pipe or manhole, an uncured pipe lining material or manhole lining material is inserted into the bonding liner, and fluid pressure is applied to the inside of the pipe lining material or manhole lining material. And curing the pipe lining material or the manhole lining material, and filling a grout material between the connection liner and the existing pipe or the existing manhole.
[0013]
Therefore, according to the present invention, since the reinforcing material or the spacer attached to the joint liner is provided between the pipe line and the pipe lining material or between the manhole and the manhole lining material, it acts on the pipe lining material and the manhole lining material. The tensile force is shared by the stiffeners or spacers, so that the tensile forces acting on the pipe lining material and manhole lining material are kept small, the required thickness of these lining materials is minimized, and the pipeline and manhole In the repair work, the lining material can be easily handled, the workability is improved, and the cost of the lining material is reduced.
[0014]
Further, since the lining material and the grout material are firmly connected by the connecting liner, the pipe and the pipe lining material or the manhole and the manhole lining material are surely integrated.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0016]
<Embodiment 1>
FIG. 1 is a partial perspective view of a bonding liner according to the present invention, and FIG. 2 is an enlarged detailed view of a portion A of FIG. 1. As shown in detail in FIG. And nonwoven fabrics 3 and 4, and a reinforcing material 5 attached to the outer surface. In the present embodiment, the reinforcing members 5 are made of lath, and each reinforcing member 5 is attached by heat welding or bonding a plurality of nonwoven fabrics 6, as shown in FIG.
[0017]
Here, polyethylene, vinyl chloride, polyurethane, or the like is used as a material of the plastic film 2 forming the bonding liner 1, and polypropylene, polyester, or the like is used as a material of the nonwoven fabrics 3 and 4 bonded to the inner and outer surfaces of the plastic film 2. Acrylic, vinylon, glass fiber and the like are used. In this embodiment, a flexible lath is used as the reinforcing member 5 as described above, but glass fiber, carbon fiber, or the like may be used instead.
[0018]
FIG. 3 is a partial perspective view of a bonding liner 1 ′ according to another embodiment of the present invention. The illustrated bonding liner 1 ′ binds nonwoven fabrics 3 ′ and 4 ′ to inner and outer surfaces of a plastic film 2 ′, A plurality of spacers 5 'are attached to the outer surface. Here, in this embodiment, an expanded metal is used as the spacer 5 ′, but other than that, a punching metal or the like can be used. In the connection liner 1 'shown in FIG. 3, each spacer 5' is attached by fixing both ends in the longitudinal direction of the non-woven fabric 6 'by heat welding or bonding.
[0019]
Next, a method of repairing a pipeline according to the present invention, which is performed using the bonding liner 1 shown in FIG. 1, will be described.
[0020]
4 to 9 are sectional views showing the method of the present invention in the order of steps, FIG. 4 is a longitudinal sectional view of a pipe showing a step of inserting a connecting liner into a pipe, and FIG. 5 is a connecting liner of a pipe lining material. FIG. 6 is a vertical cross-sectional view of a pipeline showing a process of inverting the pipe into the inside, FIG. 6 is a vertical cross-sectional view of a pipeline showing a hardening process of the pipe lining material, and FIG. 8 is a longitudinal sectional view of the pipeline after the restoration, and FIG. 9 is an enlarged detailed view of a portion B in FIG.
[0021]
In the drawing, reference numeral 10 denotes a pipeline such as a sewer pipe buried underground. When the pipeline 10 is repaired, as shown in FIG. 4, the connecting liner 1 is inserted into the pipeline 10 by traction. You.
[0022]
As described above, when the bonding liner 1 is inserted into the pipe 10, as shown in FIG. 5, the pipe lining material 11 is placed inside the bonding liner 1 inserted into the pipe 10 by air pressure or the like. It is inserted reversely by fluid pressure. Here, the pipe lining material 11 is formed by covering the outer surface of a tubular nonwoven fabric such as polyester, vinylon, or allyl impregnated with an uncured thermosetting resin with a highly airtight plastic film such as polyurethane or polyethylene. As the uncured thermosetting resin impregnated in the tubular nonwoven fabric, an unsaturated polyester resin, a vinyl ester resin, an epoxy resin, or the like is used.
[0023]
When the pipe lining material 11 is inserted upside down into the connection liner 1 installed in the pipe 10, fluid pressure acts on the inside of the pipe lining material 11 to expand the pipe lining material 11. As shown in FIG. 6, while the pipe lining material 11 is pressed against the inner peripheral surface of the connection liner 1, hot water is jetted out of a hot water hose 12 drawn into the pipe lining material 11 in a shower shape. Then, the pipe lining material 11 is heated by hot water, and the thermosetting resin impregnated in the pipe lining material 11 is hardened by heat, so that a plastic pipe as a rigid pipe is formed inside the bonding liner 1. In this case, since the thermosetting resin which flows out of the pipe lining material 11 and is impregnated in the nonwoven fabric 3 on the inner surface side of the bonding liner 1 is hardened, the pipe lining material 11 and the bonding liner 1 are firmly bonded and the two are integrated Be converted to
[0024]
In the present embodiment, a plastic pipe as a rigid pipe is formed in the pipe 10 by inverting insertion of the pipe lining material 11 into the pipe 10 and curing by heat. A plastic pipe may be formed in the pipe 10 by a method of assembling in the pipe 10.
[0025]
As described above, when a plastic pipe as a rigid pipe is formed inside the joining liner 1, as shown in FIG. 7, the grout material 13 is inserted into the gap formed between the pipe 10 and the joining liner 1. Fill. As the grouting material 13, a non-shrinking type is preferable. In the cement system, a cement grouting material to which aluminum powder or the like is added is mainly used. As the admixture, a non-breathing admixture for suppressing the occurrence of breathing is used. Is used. As the resin-based grout material, an epoxy resin, a polyurethane resin, a silicone resin, or an unsaturated polyester resin alone or a resin mortar to which sand, calcium carbonate, aluminum hydroxide, or the like is added, is used.
[0026]
Here, in the present embodiment, when filling the grout material 13, a grout hole 14 is formed in the pipe lining material 11 and the connection liner 1 and a grout hose 15 is connected to the grout hole 14, and the grout hose 15 is Although the grout material 13 is injected into the gap between the adhesive and the bonding liner 1, the grout material 13 may be directly injected into the gap from the pipe opening.
[0027]
It should be noted that if the grout material 13 is filled at one time, a load such as buoyancy and external pressure is generated on the pipe lining material 11. Therefore, it is desirable to fill the grout material 13 in two to five times. In this case, it is preferable in terms of construction to carry out the second and subsequent filling after the grout material 13 filled at the first time is completely solidified, and to prevent the pipe lining material 11 from floating due to buoyancy. The grout material 13 may be filled with water stored therein. Further, it is effective to fill the grout material 13 while adjusting the temperature of the grout material 13.
[0028]
When the grout 13 filled in the gap between the pipe 10 and the connecting liner 1 is solidified, the grout 13 solidifies the pipe 10 and the connecting liner 1 as shown in FIGS. In addition, since the connection liner 1 and the pipe lining material 11 are firmly connected and integrated as described above, the pipe lining material 11 and the pipe line 10 are connected via the connection liner 1 and the grout material 13. The pipes 10 are connected and integrated, and a series of repair work on the pipe 10 is completed. However, a load such as an earth pressure or a live load acting on the pipe 10 as an external pressure induces a tensile force in the pipe lining material 11.
[0029]
However, in the present embodiment, since the reinforcing material 5 attached to the connection liner 1 is provided between the pipe 10 and the pipe lining material 11, the tensile force acting on the pipe lining material 11 is reduced by the reinforcing material 5. As a result, the tensile force acting on the pipe lining material 11 is kept small, the required thickness of the pipe lining material 11 is minimized, and the pipe lining material 11 can be easily handled during the repair work of the pipeline 10. As a result, the workability is improved, and the cost of the pipe lining material 11 is reduced.
[0030]
Further, since the pipe lining material 11 and the grout material 13 are firmly connected by the connecting liner 1, the pipe line 10 and the pipe lining material 11 are surely integrated.
[0031]
Although the above description has been given of the pipe line repairing method constructed by using the bonding liner 1 shown in FIG. 1, a pipe line repairing method using a bonding liner 1 'having a plurality of spacers 5' attached to the outer surface as shown in FIG. Has the same effect as described above.
[0032]
<Embodiment 2>
Next, an embodiment in which the present invention is applied to a manhole will be described.
[0033]
10 to 16 are sectional views showing the method of the present invention in the order of steps, FIG. 10 is a vertical sectional view of a manhole provided with a binding liner, and FIG. 11 shows a step of inverting and inserting a manhole lining material into the binding liner. FIG. 12 is a longitudinal sectional view of a manhole showing a curing step of a manhole lining material, FIG. 13 is a sectional view of a manhole showing a filling step of a grout material, and FIG. 14 is a longitudinal sectional view of a manhole after repair. FIG. 15 is a cross-sectional view taken along line CC of FIG.
[0034]
In the figure, reference numeral 20 denotes a manhole buried in the ground. When the manhole 20 is repaired, for example, as shown in FIG. 10, the connection liner 1 shown in FIG. Is done.
[0035]
As described above, when the bonding liner 1 is installed inside the manhole 20, as shown in FIG. 11, a manhole lining material 21 is inserted into the inside of the bonding liner 1 installed inside the manhole 20 by fluid pressure from above. It is inserted upside down. Here, the manhole lining material 21 is configured in the same manner as the pipe lining material 11 in the first embodiment, and is formed of a tubular nonwoven fabric impregnated with an uncured thermosetting resin.
[0036]
Thus, when the manhole lining material 21 is invertedly inserted into the coupling liner 1 provided in the manhole 20, fluid pressure acts on the inside of the manhole lining material 21 to expand the manhole lining material 21, As shown in FIG. 12, with the manhole lining material 21 pressed against the inner peripheral surface of the bonding liner 1, hot water is showered from a hot water hose 22 drawn into the manhole lining material 21. Then, the manhole lining material 21 is heated by the hot water, and the thermosetting resin impregnated in the manhole lining material 21 is cured by heat, so that a plastic pipe as a rigid pipe is formed inside the bonding liner 1. Here, the hot water that has been heated at the bottom of the manhole lining material 21 due to the heating of the manhole lining material 21 is pushed out to the drain hose 26 by the pressure inside the manhole lining material 21 and is discharged to the outside of the manhole lining material 21. You.
[0037]
In the present embodiment, a plastic pipe as a rigid pipe is formed in the manhole 20 by inversion insertion of the manhole lining material 21 into the manhole 20 and curing by heat. A plastic pipe may be formed in the manhole 20 by an assembling method.
[0038]
As described above, when a plastic pipe as a rigid pipe is formed inside the bonding liner 1, as shown in FIG. 13, a grout material 23 is filled in a gap formed between the manhole 20 and the bonding liner 1. I do. That is, when filling the grout material 23, a grout hole 24 is formed in the manhole lining material 21 and the connection liner 1 and a grout hose 25 is connected to the grout hole 25, and the gap between the manhole 20 and the connection liner 1 from the grout hose 25 is formed. Is poured into the grout material 23.
[0039]
When the grout material 23 filled in the gap between the manhole 20 and the bonding liner 1 is solidified, the manhole lining material 21 and the bonding liner 1 are separated by the grout material 23 as shown in FIGS. The manhole 20 is firmly connected to the manhole 20, and a series of repairing operations for the manhole 20 is completed. However, a load such as an earth pressure or a live load acting on the manhole 20 induces a tensile force on the manhole lining material 21.
[0040]
However, in the present embodiment, since the reinforcing member 5 attached to the bonding liner 1 is provided between the manhole 20 and the manhole lining member 21, the tensile force acting on the manhole lining member 21 is shared by the reinforcing member 5. As a result, the tensile force acting on the manhole lining material 21 is suppressed to a small value, the required thickness of the manhole lining material 21 is minimized, and the manhole lining material 21 can be easily handled when the manhole 20 is repaired. As a result, the workability is improved and the cost of the manhole lining material 21 is reduced.
[0041]
Further, since the manhole lining material 21 and the grout material 23 are firmly connected by the connecting liner 1, the manhole 20 and the manhole lining material 21 are surely integrated.
[0042]
Although the manhole repair method constructed using the bonding liner 1 shown in FIG. 1 has been described above, it is also possible to use a bonding liner 1 ′ having a plurality of spacers 5 ′ attached to the outer surface as shown in FIG. The same effect as described above can be obtained.
[0043]
【The invention's effect】
As is apparent from the above description, according to the present invention, a reinforcing material or a spacer attached to a joint liner is provided between a pipe and a pipe lining material or between a manhole and a manhole lining material. And the tensile force acting on the manhole lining material is shared by the reinforcements or spacers.As a result, the tensile force acting on the pipe lining material and the manhole lining material is reduced, and the required thickness of these lining materials is minimized. It is possible to obtain the effect that the lining material can be easily handled in the repair work of the pipeline and the manhole, the workability is improved, and the cost of the lining material can be reduced.
[0044]
Further, according to the present invention, since the lining material and the grout material are firmly bonded by the connecting liner, an effect is obtained that the pipe and the pipe lining material or the manhole and the manhole lining material are surely integrated.
[Brief description of the drawings]
FIG. 1 is a partial perspective view of a bonding liner according to the present invention.
FIG. 2 is an enlarged detailed view of a portion A in FIG. 1;
FIG. 3 is a partial perspective view of a bonding liner according to another embodiment of the present invention.
FIG. 4 is a longitudinal sectional view of the conduit showing a step of inserting the coupling liner into the conduit in the first embodiment of the present invention.
FIG. 5 is a longitudinal sectional view of a pipe showing a step of inverting and inserting a pipe lining material into a connection liner according to Embodiment 1 of the present invention.
FIG. 6 is a longitudinal sectional view of a pipe showing a curing step of the pipe lining material in the first embodiment of the present invention.
FIG. 7 is a cross-sectional view of a pipeline showing a grout filling step according to the first embodiment of the present invention.
FIG. 8 is a longitudinal sectional view of the pipeline after the restoration according to the first embodiment of the present invention.
9 is an enlarged detail view of a portion B in FIG. 8;
FIG. 10 is a longitudinal sectional view of a manhole provided with a binding liner in Embodiment 2 of the present invention.
FIG. 11 is a longitudinal sectional view of a manhole showing a step of inverting and inserting a manhole lining material into a connection liner in Embodiment 2 of the present invention.
FIG. 12 is a longitudinal sectional view of a manhole showing a step of curing a manhole lining material according to Embodiment 2 of the present invention.
FIG. 13 is a cross-sectional view of a manhole showing a grout filling step in Embodiment 2 of the present invention.
FIG. 14 is a longitudinal sectional view of a manhole after repair according to Embodiment 2 of the present invention.
FIG. 15 is a sectional view taken along line CC of FIG. 14;
[Explanation of symbols]
1, 1 'Bonding liner 2, 2' Plastic film 3, 3 'Non-woven fabric 4, 4' Non-woven fabric 5 Reinforcement material 5 'Spacer 10 Pipe (fluid transport facility)
11 pipe lining material 12,22 hot water hose 13,23 grout material 15,25 grout hose 20 manhole (fluid transport facility)
21 Manhole lining material

Claims (4)

A bonding liner comprising a nonwoven fabric bonded to the inner and outer surfaces of a plastic film, and a reinforcing material or a spacer attached to the outer surface. The bonding liner according to claim 1, wherein the reinforcing material and the spacer are made of expanded metal or lath. The bonding liner according to claim 1, wherein the reinforcing material or the spacer is attached by heat welding or bonding a nonwoven fabric. In the repair method of a fluid transportation facility constructed using a bonding liner that is formed by attaching a nonwoven fabric to the inner and outer surfaces of the plastic film and attaching a reinforcing material or a spacer to the outer surface,
After inserting the binding liner into an existing pipe or manhole, an uncured pipe lining material or manhole lining material was inserted into the binding liner, and fluid pressure was applied to the inside of the pipe lining material or manhole lining material. A method of repairing a fluid transport facility, comprising curing a pipe lining material or a manhole lining material in a state and filling a grout material between the connection liner and an existing pipe or an existing manhole.

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