JP2001108180A - Pipe repairing material, pipe repairing device and pipe repairing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe repairing material, a pipe repairing device and a pipe repairing method which can attain cutoff performance with high reliability in a short time at the time of cutting off a joint part between an underground main pipe and a fitting pipe. SOLUTION: In this pipe repairing material 1 including a saddle part 3 laid along the inner surface shape of a lining pipe 2 lined in an underground main pipe I, and a cylindrical part 4 integrated with the saddle part 3 to be inserted on the inside of the fitting pipe II, a heating wire 33 is buried in the saddle part 3. The cylindrical part 4 is formed as a double-pipe structure. The cylindrical part 4 is passed through the fitting pipe II and the saddle part 3 is pressed to the inner face of the lining pipe 2. An electric current is applied to the heating wire 32 to fuse the pipe repairing material 1 to the lining pipe 2. An inner cylindrical member 42 of the cylindrical part 4 is elongated and forced in the inner part of the fitting pipe II.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention utilizes a pipe repair material for stopping water at a joint between a buried main pipe and a mounting pipe (branch pipe) joined to an outer peripheral portion thereof, and the pipe repair material. The present invention relates to a pipe repair device for performing a repair work and a pipe repair method using the pipe repair material. In particular, the present invention relates to measures for shortening the repair work time and ensuring good water stopping performance.

[0002]

2. Description of the Related Art In general, when a pipeline for sewage or the like buried underground is deteriorated, it is necessary to reinforce the pipeline by lining the inner surface of the pipeline with a resin lining pipe. Have been done. In particular, when the mounting pipe is joined to the outer peripheral portion of the buried main pipe, the joint between the two is often deteriorated due to the influence of ground fluctuation or the like, and there is a possibility that water will leak from this joint. . For this reason, at the time of the above-mentioned lining, it is necessary to attach a repair material to this joint and to perform water stoppage.

[0003] Various repair materials and repair methods for stopping water at the joint between the buried main pipe and the mounting pipe have been conventionally proposed. Hereinafter, they are listed. (1) A repair material obtained by impregnating a glass mat with a water-curable resin such as a polyester resin is used, and the repair material is left for a certain period of time while being pressed from the inner surface of the buried main pipe to the inner surface of the mounting pipe. The underwater curable resin is thereby cured (JP-A-6-10399). (2) Using a repair material made of an elastic material such as rubber in which the insertion tube to be inserted into the mounting tube and the flange portion that comes into contact with the inner surface of the buried main pipe are integrally molded, and applying an adhesive to the insertion tube and the flange portion. To apply a repair agent to the joint between the buried main pipe and the mounting pipe (JP-A-63-167193).
No.). (3) Using a repair material in which a saddle portion along the inner surface of the buried main pipe and a tubular portion to be inserted into the mounting pipe are integrally formed, an adhesive is applied to the saddle portion and adhered to the inner surface of the buried main pipe. ,
A diameter-expanding ring is provided inside the tube portion, and the diameter of the tube portion is expanded by the diameter-expanding ring and pressed against the inner surface of the mounting tube, thereby securing the water stopping performance between the mounting tube and the tube portion. (JP-A-10-267182).

[0004]

However, each of the above-mentioned conventional devices has the following problems.

First, in the case of the above (1), variations in properties of the impregnated resin material, variations in pot life, and the like occur. Further, the time required for the resin to harden is relatively long, and the repair work takes a long time.
Furthermore, when applied to construction in water places such as sewer pipes, there is a high possibility that sufficient adhesiveness and watertightness cannot be obtained due to the influence of moisture. In addition, when an unsaturated polyester resin is used as the water-curable resin, its unique styrene odor and amine odor are generated.

In the above (2) and (3), the repair material must be firmly adhered with an adhesive.
When applied to a water place such as a sewer pipe, the reliability of the adhesive cannot be sufficiently secured, and sufficient water stopping performance may not be obtained. Further, since the time required for the adhesive to harden is relatively long, the repair work takes a long time.

As described above, the conventional repair materials and repair methods have not been able to obtain highly reliable water stopping performance in a short time.

The present invention has been made in view of the above points, and an object of the present invention is to provide a highly reliable stop in a short time when water is stopped at a joint between a buried main pipe and an attachment pipe. An object of the present invention is to provide a pipe repair material, a pipe repair apparatus, and a pipe repair method capable of obtaining water performance.

[0009]

Means for Solving the Problems-Summary of the Invention-In order to achieve the above object, the present invention melts the pipe repair material itself and integrates it with the lining pipe. In this way, without using underwater curable resin or adhesive, the pipe repair material is attached to the joint between the buried main pipe and the mounting pipe so that good water stopping performance can be obtained in this part I have.

-Solution Means- Specifically, a first solution means taken by the present invention is that a buried main pipe is lined with a resin-made lining pipe and then attached to the buried main pipe and an outer peripheral portion thereof. It is assumed that a resin pipe repair material to be attached to the joint with the pipe is used. The pipe repair material is provided with a saddle section along the inner peripheral surface of the lining pipe, and a tubular section formed integrally with the saddle section and inserted into the inside of the mounting pipe. Further, the saddle portion is provided with heating means for heating the saddle portion and fusing it to the inner peripheral surface of the lining tube.

According to this specific matter, when the pipe repair material is mounted on the joint between the buried main pipe and the mounting pipe, the tubular section is inserted into the mounting pipe, and the saddle section is connected to the inner circumference of the lining pipe. Along the surface. In this state, the saddle portion is heated by the heating means and fused to the inner peripheral surface of the lining tube. As a result, the pipe repair material is integrated with the lining pipe, and good water stopping performance at the joint between the buried main pipe and the mounting pipe is obtained. In addition, the time required for the fusion is extremely short as compared with the case where the pipe repair material is attached using a water-curable resin or an adhesive.

The second solution is to specifically specify the heating means. That is, in the first solving means, the heating means is constituted by a heating wire embedded in the saddle portion.

According to this specific matter, the saddle portion can be heated and fused to the inner peripheral surface of the lining tube only by supplying electricity to the heating wire. When this heating wire is used, it is possible to arbitrarily obtain a fusion position and a fusion area of the saddle portion with respect to the lining tube by appropriately setting the embedding position. For example, when the heating wire is embedded over the entire saddle portion, the entire saddle portion can be fused to the inner peripheral surface of the liner tube, and a sufficient fusion area can be secured. In addition, by arranging heating wires in a spiral,
If the spacing dimension (arrangement pitch) between the adjacent heating wires is set to be small, the saddle portion can be heated to the melting temperature in a short time, and the time required for fusion can be reduced. .

A third solution relates to the improvement of the cylindrical portion in view of the improvement of the water stopping performance. That is, the first
Alternatively, in the second solving means, the cylindrical portion has a double pipe structure of an outer cylindrical body and an inner cylindrical body. The outer cylindrical body is formed integrally with the saddle portion, while the inner cylindrical body is movable with respect to the outer cylindrical body in the extending direction of the mounting tube.

According to this specific matter, the inner cylindrical body is extended in the extending direction of the mounting pipe with respect to the outer cylindrical body in a state where the cylindrical portion is inserted into the inside of the mounting pipe. Thereby, the length dimension of the whole cylinder part becomes long, and the length dimension of the cylinder part existing inside the mounting pipe can be extended. Therefore, the water stopping performance at the joint between the buried main pipe and the mounting pipe is further improved. Also, when the pipe repair material is transported to a predetermined position in the buried main pipe (location where the mounting pipe is provided), if the inner cylinder is pulled into the outer cylinder, the overall length of the cylinder becomes shorter. In addition, the transfer in the buried main pipe can be performed smoothly. In other words, it is possible to easily transport the cylinder to a predetermined value without being caught by the buried main pipe or the lining pipe.

The fourth solution relates to an improvement made in view of the improvement of the water stopping performance between the tubular portion and the mounting pipe. That is,
In the above-mentioned third solution, a water-expandable rubber ring is provided around the outer periphery of the distal end edge of the inner cylindrical body, which presses the inner peripheral surface of the mounting pipe when in an expanded state.

According to this specific matter, when the pipe repair material is mounted, a water-expandable rubber ring is interposed between the distal end edge of the inner cylinder and the inner peripheral surface of the mounting pipe. Water leakage from between the outer peripheral surface of the inner cylinder and the inner peripheral surface of the mounting pipe is reliably prevented. In particular, since the rubber ring is a water-swelling material, the reliability of the water stopping performance against water leakage is extremely high.

The fifth solution is to specify the material of the repair material. That is, in the first, second, third or fourth solution, the saddle portion is also formed of polyethylene so as to be fused to the polyethylene lining tube.

Since the saddle portion is formed of the same resin material as that of the liner tube, good thermal fusion is achieved and a highly reliable water stopping performance can be obtained. In addition, when the conventional unsaturated polyester resin was used, there was a problem that a styrene odor or an amine odor was generated. However, in the present solution, the use of polyethylene can solve the problem relating to the odor.

A sixth aspect of the present invention relates to a pipe repair apparatus for performing a repair operation using the pipe repair material according to the first aspect. In other words, after the buried main pipe is lined with the resin-lined pipe, a pipe repair device for mounting a resin-made pipe repair material at the joint between the buried main pipe and the mounting pipe joined to the outer peripheral portion thereof is provided. It is assumed.
This pipe repair device mounts a pipe repair material including a saddle portion in which a heating wire is embedded and along the inner peripheral surface of the lining tube, and a tubular portion integrally formed with the saddle portion and inserted into the inside of the mounting tube. It can be installed. Further, the pipe repairing apparatus includes a power supply unit that supplies power to the heating wire, and a pressing unit that presses the saddle portion against the inner peripheral surface of the lining pipe when the power supply unit supplies power to the heating wire. I have.

In the pipe repair operation by the present pipe repair apparatus,
First, a pipe repair material is placed on the pipe repair apparatus. With the pipe repair device installed at a predetermined position of the buried main pipe, the repair material is moved toward the lining pipe by pressing means, the cylindrical part is inserted into the inside of the mounting pipe, and the saddle part is inserted into the inner peripheral surface of the lining pipe. Press Then, power is supplied to the heating wire by the power supply means, and the saddle portion is heated and melted and fused to the inner peripheral surface of the lining tube. As a result, the pipe repair material is integrated with the lining pipe, and good water stopping performance at the joint between the buried main pipe and the mounting pipe is obtained.

A seventh solution is to embody the structure of a pipe repairing device accompanying the improvement of the tubular portion of the pipe repairing material. In other words, in the sixth solution means, there is provided a pushing means for pushing the inner cylindrical body of the cylindrical portion having the double-pipe structure of the outer cylindrical body and the inner cylindrical body in the extension direction of the mounting pipe and pushing it into the mounting pipe. Let me.

According to this particular matter, when the inner cylindrical body is extended in the extending direction of the mounting pipe with respect to the outer cylindrical body in a state where the cylindrical portion is inserted into the inside of the mounting pipe, the inner cylindrical body is pushed by the pushing means. Advance in the extension direction of the mounting pipe. Thereby, in order to improve the water stopping performance at the joint between the buried main pipe and the mounting pipe, it becomes possible to provide the pipe repairing device with a drive source for extending the length of the cylindrical portion.

The eighth solution relates to a pipe repair method using the pipe repair material according to the first solution. In other words, this is a pipe repairing method in which after the buried main pipe is lined with a resin-lined pipe, a resin-made pipe repair material is attached to a joint between the buried main pipe and a mounting pipe bonded to an outer peripheral portion thereof. This method uses a pipe repair material having a saddle portion along the inner peripheral surface of the lining tube and a tubular portion integrally formed with the saddle portion and inserted into the inside of the mounting tube. Along with inserting the pipe portion of this pipe repair material into the inside of the mounting pipe, aligning the saddle portion along the inner peripheral surface of the lining tube, heating the saddle portion and fusing it to the inner peripheral surface of the lining tube. I have.

According to this method, the same operation as that of the first solution can be obtained. That is, since the saddle portion is heated and fused to the inner peripheral surface of the lining tube, the joint between the buried main pipe and the mounting pipe can be repaired in a short time to obtain good water stopping performance.

A ninth solution relates to a method for improving the water stopping performance at the joint between the buried main pipe and the mounting pipe. That is, in the above-mentioned eighth solution, the tubular portion is formed of a double pipe structure of an outer tubular body and an inner tubular body, and after the tubular portion is inserted into the inside of the fitting pipe, the inner tubular body is connected to the fitting pipe. The push-in operation is performed in which it is advanced in the extension direction and pushed into the mounting pipe.

[0027] Thus, a pipe repairing method capable of obtaining the action according to the third solution can be provided. In other words, the overall length of the tubular portion is lengthened, the length of the tubular portion present inside the mounting pipe is extended, and the water stopping performance at the junction between the buried main pipe and the mounting pipe is improved. Can be.

[0028]

Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, a case will be described in which the present invention is applied to repair of a sewer pipe as an existing pipe. In particular, in the present embodiment, a description will be given of a case where the present invention is applied to a pipe having a relatively small inner diameter (for example, the inner diameter of a buried main pipe is 250 mm) and a person cannot enter the pipe and work. I do.

-Description of Repair Materials for Piping- First, repair materials for stopping water at a joint between an embedded main pipe and a mounting pipe joined to an outer peripheral portion thereof will be described.

FIG. 1 is a perspective view in which a part of the repair material 1 according to the present embodiment is cut away. As shown in FIG. 2, after the buried main pipe I is lined with the resin-lined pipe 2, the repair material 1 repairs the joint between the buried main pipe I and the mounting pipe II to improve the water stopping performance. It is for securing.

As shown in FIG. 1, the repair material 1 includes a saddle portion 3 and a tubular portion 4 having a double pipe structure.

The saddle portion 3 is made of polyethylene,
It is a disk-shaped member that is curved along the inner surface of the lining pipe 2 lined with the buried main pipe I. The outer diameter of the saddle portion 3 is set sufficiently larger than the inner diameter of the mounting pipe II. For example, if the inner diameter of the mounting pipe II is 15
The outer diameter of the saddle part 3 is 250 mm while it is 0 mm
Is set to The thickness of the saddle part 3 is 3mm
Is set to At the center of this saddle part 3 is a mounting pipe II
An opening 31 having a diameter substantially corresponding to the inner diameter of is formed.

The saddle part 3 is characterized in that a heating wire 32 as a heating means is embedded. The heating wire 32 has a wire diameter of 0.6 mm and a volume resistance of 0.49.
It is formed of a copper-nickel alloy of Ω / m ² and is spirally disposed around the center of the saddle portion 3. Specifically, the heating wire 32 is spirally wound 15 times at a pitch of 1.8 mm. The total resistance value in this case is 11.17Ω. A pair of connection terminals (not shown) connected to both ends of the heating wire 32 are provided on the lower surface of the saddle portion 3. The connection terminal is connected to an adapter 51 as power supply means provided in the repair device 5 described later, and power is supplied from the adapter 51. With this power supply, the heating wire 32 generates heat and heats the entire saddle portion 3.

The heating wire 32 may be provided in a multi-winding configuration. In this case, each heating wire 32
It is necessary to change the connection terminal and the adapter so that power can be supplied to the power supply.

The cylindrical portion 4 is inserted through the inside of the mounting pipe II, and has a double pipe structure of an outer cylindrical body 41 and an inner cylindrical body 42. Both the outer cylinder 41 and the inner cylinder 42 are made of polyethylene.

The outer cylinder 41 is a cylindrical body whose outer diameter is substantially equal to the inner diameter of the mounting pipe II, and is fused to the edge of the opening 31 of the saddle portion 3. Also, this outer cylinder 4
The thickness of 1 is set to 6 mm.

The inner cylinder 42 is slidably inserted in the outer cylinder 41 in the axial direction (vertical direction in FIG. 1). The height of the inner cylinder 42 is
Approximately the same height dimension. For this reason, at the retracted position of the inner cylinder 42 (in a state where the inner cylinder 42 enters the outer cylinder 42 as shown in FIG. 2), the overall height of the cylinder 4 substantially matches the height of the outer cylinder 41. On the other hand, at the forward position of the inner cylinder 42 (in a state extended from the outer cylinder 41 as shown in FIG. 4), the overall height of the cylinder 4 is equal to the height of the outer cylinder 41 and the inner cylinder 42. The height is substantially equal to the sum of the heights.

A water-swellable rubber ring 43 is mounted around the outer periphery of the tip (upper end) of the inner cylinder 42. Inner cylinder 42
A concave groove 44 is formed on the outer peripheral surface of the distal end portion over the entire circumference, and the rubber ring 43 is fitted into the concave groove 44. The rubber ring 43 is formed, for example, in a plate shape having a width of about 10 mm or a corrugated shape with a lip, and is made of a material having a water expansion coefficient of about twice. The outer diameter of the rubber ring 43 in the expanded state is slightly larger than the inner diameter of the mounting pipe II (for example, 5 mm larger than the inner diameter of the mounting pipe II).
155mm). For this reason, in a state where the cylindrical portion 4 is inserted through the mounting tube II, the outer peripheral surface of the rubber ring 43 is pressed against the inner peripheral surface of the mounting tube II, and the watertightness between the cylindrical portion 4 and the mounting tube II is good. Is to be secured.

The outer periphery of the base end of the inner cylinder 42 is
A ring 45 is mounted. A concave groove 46 is formed over the entire outer peripheral surface of the base end portion of the inner cylindrical body 42, and the O-ring 45 is fitted into the concave groove 46. This O
The ring 45 ensures good watertightness between the outer cylinder 41 and the inner cylinder 42.

-Description of Repair Apparatus- Next, a repair apparatus 5 for performing repair work using the repair material 1 will be described.

FIG. 2 shows a state in which the repair device 5 is located in the buried main pipe I. The repair device 5 includes a base 6, a hydraulic cylinder 7, and a pressing plate 8 as pressing means. Hereinafter, each unit will be described.

The base portion 6 has a bottom plate 6 which is curved in an arc shape so as to substantially follow the inner surface shape of the lined lining tube 2.
1 is provided. The bottom plate 61 has a radius of curvature substantially equal to the inner surface of the lining tube 2. That is, this bottom plate 61
Is in contact with the inner surface of the lining tube 2,
Is stably installed in the buried main pipe I. In addition, the lower surface of the bottom plate 61 serves as a “sleigh”, so that the repair device 5 (movement in the vertical direction in FIG. 2) within the buried main pipe I is smoothly moved.

The bottom plate 61 is provided with a substrate 62 on which the hydraulic cylinders 7, 7 are installed. This substrate 62
Is provided with a leg 63 extending toward the bottom plate 61, and the lower end of the leg 63 is connected to the bottom plate 61 so that the bottom plate 6
1 is set up. The adapter 51 is provided on the substrate 62.

The hydraulic cylinders 7 are installed at two places on the upper surface of the substrate 62. These hydraulic cylinders 7, 7
Are arranged such that the moving directions of the hydraulic rods 71, 71 (vertical direction in FIG. 3) are parallel to each other. A hydraulic supply pipe (not shown) is connected to the hydraulic cylinders 7,7. Each hydraulic cylinder 7,
7 by supplying hydraulic pressure to each hydraulic rod 71, 7
1 moves forward in synchronization (see the arrow in FIG. 3), while releasing the hydraulic pressure causes the hydraulic rods 71, 71 to retreat in synchronization (see FIG. 2).

The pressing plate 8 has the same shape as the bottom plate 61. That is, it is curved in an arc shape so as to follow the inner surface shape of the lining tube 2 (having a radius of curvature substantially equal to the inner surface of the lining tube 2). Further, on the inner peripheral side surface (lower side surface in FIG. 3) of the pressing plate 8, the hydraulic cylinder 7,
7 hydraulic rods 71, 71 are connected. Therefore,
In the state shown in FIG. 2, when the hydraulic cylinder 7 is operated, the pressing plate 8 moves toward the inner surface of the buried main pipe I as the hydraulic rod 71 advances (see the arrow in FIG. 3). .

Further, pushing pins 72, 72 as pushing means capable of moving forward and backward with respect to the hydraulic rods 71, 71 by means such as hydraulic pressure are inserted into the hydraulic rods 71, 71, respectively. Push-in pin 72,
Reference numeral 72 penetrates the pressing plate 8 and can extend upward from the pressing plate 8. As shown in FIG. 2, the positions of the push pins 72, 72 are set to positions facing the lower surface of the inner cylinder 42 when the repair material 1 is placed on the pressing plate 8. That is, as shown in FIGS. 2 and 3, when the push pins 72, 72 at the retracted positions advance, the inner cylinder 42 is moved upward as shown in FIG.

-Description of Repair Operation- Next, the operation of lining the buried main pipe I and the operation of repairing the joint between the buried main pipe I and the mounting pipe II will be described.

(Lining Operation of Buried Main Pipe I) First, when the buried main pipe I is lined with the lining pipe 2, first, the lining pipe 2 formed of polyethylene into a cylindrical shape is used.
Is drawn into the buried main pipe I in a state where it is deformed into a “C” shape (a state in which the cross-sectional area is reduced). This retraction is performed by, for example, a well-known winch. Thereafter, the lining tube 2 is heated by steam and compressed air is sent into the lining tube 2. For this heating operation and air supply operation, a known heating and pressurizing device is used. As a result, the lining pipe 2 is restored to the original cylindrical shape and is lined on the inner surface of the buried main pipe I.

(Joint Repairing Operation) After the lining operation, the repairing operation of the joint using the repair material 1 and the repairing device 5 is performed. Hereinafter, this repair operation will be described with reference to FIGS.

Before starting the repairing operation, a portion of the lined lining pipe 2 facing the mounting pipe II is deleted. That is, by forming the opening 21 in the lining pipe 2, the inside of the buried main pipe I and the inside of the mounting pipe II are communicated.

In the repairing operation of the joint, first, as shown in FIG. 2, the repair material is placed on the pressing plate 8 in a state where both the hydraulic rod 71 and the pushing pin 72 of the repairing device 5 are retracted (the retracted state). 1 is placed. Thereafter, the repair device 5 is installed in the buried main pipe I from a manhole (not shown) having a diameter larger than the outer diameter of the saddle portion 3 of the repair material 1. A rope is connected to the repair device 5, and the rope pulls the repair device 5 to a predetermined position. This traction is performed by removing the end of the rope from a manhole different from the above and manually or by a rope winding device. In addition, a TV camera (not shown) is installed inside the buried main I, and an image from the TV camera is displayed on a monitor on the ground to recognize the position of the repair device 5 in the buried main I. While performing this towing operation.

When the repair device 5 reaches a position facing the mounting pipe II, the traction is stopped. As a result, as shown in FIG. 2, the repair device 5 and the mounting pipe II face each other.
In addition, if the repair device 5 is configured to be able to rotate around the center of the conduit of the buried main pipe I, the repair device 5 and the mounting pipe
The circumferential alignment with the II can be performed more accurately. Further, instead of pulling by a rope, the repairing device 5 may be configured to be self-propelled and run in the buried main pipe I, and stop running at a position facing the mounting pipe II.

In this state, first, the hydraulic pressure is supplied to the hydraulic cylinder 7. With the supply of the hydraulic pressure, each hydraulic rod 71,
71 advances synchronously. Thereby, as shown in FIG. 3, the cylindrical portion 4 of the repair material 1 is inserted into the inside of the mounting tube II, and the saddle portion 3 comes into contact with the inner surface of the lining tube 2. In this state, the supply of the hydraulic pressure is stopped, and power is supplied from the adapter 51 to the heating wire 32 in the saddle unit 3. By this power supply, the heating wire 32 generates heat and the saddle portion 3 is heated. Due to this heating, a part of the saddle portion 3 is melted and fused to the inner surface of the lining tube 2. Thereby, the lining pipe 2 and the repair material 1 are integrated. When the fusion is completed, the power supply to the heating wire 32 is stopped. The time required for fusing the saddle portion 3 is, for example, 120 seconds, and the repair material 1 can be mounted on the above-mentioned joint in a short time.

After or simultaneously with the fusing operation, the pushing pins 72, 72 are advanced. As a result, as shown in FIG. 4, the push pins 72 push the lower end surface of the inner cylinder 42 upward.
The inner cylinder body 42 extends from the outer cylinder body 41 and moves toward the inner side (upper side in the figure) of the mounting pipe II. Push-in pin 72,
In the state where 72 is most extended (the state shown in FIG. 4), the O-ring 45 is interposed between the lower end of the inner cylinder 42 and the upper end of the outer cylinder 41, and the upper end of the inner cylinder 42 is The rubber ring 43 provided is in contact with the inner surface of the mounting pipe II. Thereby, good watertightness between the inner cylinder 42 and the outer cylinder 41 and between the inner cylinder 42 and the mounting pipe II are respectively ensured.

After the above operation, both the hydraulic rod 71 and the pushing pin 72 are moved backward. As a result, FIG.
As shown in the figure, the repair material 1 and the repair device 5 are separated from each other in a state where the repair material 1 is attached to the joint.

After performing the lining operation and the repairing operation in this manner, if the same lining operation and the repairing operation are required in other places, the repairing of each part is performed in the same manner as described above. Thereafter, the repair device 5 is removed from the buried main body I via a manhole (not shown), and the operation is completed.

FIG. 6 is a view showing a state in which the repair material 1 is mounted on the joint portion between the buried main body I and the mounting pipe II.
It is sectional drawing in the position corresponding to the line. As shown in this figure, even when a gap A is formed between the buried main body I and the mounting pipe II, the repair material 1 prevents water leakage.

-Effects of Embodiment- As described above, in this embodiment, the saddle portion 3 is supplied by supplying power to the heating wire 32 embedded in the saddle portion 3 of the repair material 1.
Is heated and fused to the inner peripheral surface of the lining tube 2. Therefore, the mounting work of the repair material 1 can be performed in a short time,
Repair work can be speeded up. In addition, since the saddle portion 3 and the lining tube 2 are integrated, the water stopping performance at the junction between the buried main pipe I and the mounting pipe II can be favorably obtained. In particular, since the lining pipe 2 and the repair material 1 are both made of the same material, polyethylene, the heat sealing is performed well, and extremely reliable water stopping performance can be obtained. The conventional unsaturated polyester resin has a problem that odor of styrene or amine is generated. However, in the present embodiment, the use of polyethylene can solve the problem relating to the odor. Does not give any discomfort.

Further, the cylindrical portion 4 has a double pipe structure, and the repair material 1
Is transported in the buried pipe I, the inner cylinder 42 is connected to the outer cylinder 4
When the repair material 1 is mounted, the inner cylinder 42 is extended and pushed into the inside of the mounting pipe II. For this reason, as described above, the length of the cylindrical portion 4 existing inside the mounting pipe II can be ensured to be long, and the water stopping performance at the junction between the buried main pipe I and the mounting pipe II is improved. Can be achieved. Further, when the repair material 1 is transported to a predetermined position in the buried main pipe I, the length of the cylindrical portion 4 is shortened, and accordingly, the height of the repair material 1 should be shortened. And can be smoothly transported in the buried main pipe I. That is, the tubular part 4 is buried in the main pipe I or
And it is easy to be transported.

-Other Embodiments- In the above-described embodiment, a case has been described in which the present invention is applied to a pipe having a relatively small inner diameter that cannot be operated by a person entering the pipe. The present invention is not limited to this, and can be applied to pipes of any size. However, it is necessary to change the shape of the saddle portion 3 and the cylindrical portion 4 of the repair material 1 in accordance with the inner diameter of the buried main pipe I and the inner diameter of the mounting pipe II.

The arrangement of the heating wires 32 is not limited to the above. In other words, by appropriately setting the embedment position of the heating wire 32, it is possible to arbitrarily obtain the fusion position and fusion area of the saddle portion 3 to the lining tube 2.
For example, when the heating wire 32 is embedded over the entire saddle portion 3, the entire saddle portion 3 can be fused to the inner peripheral surface of the lining tube 2, and a sufficient fusion area can be secured. Will be possible. In addition, if the arrangement pitch of the heating wires 32 is set narrow, the saddle portion 3 can be heated to the melting temperature in a shorter time, and the time required for fusion can be further reduced.

Further, the material of the lining tube 2 and the repair material 1 is not limited to polyethylene. However, it is desirable that both are formed of the same material.

The cylindrical portion 4 does not necessarily need to be formed in a double pipe structure. It may be composed of a single tube or a triple tube or more.

[0064]

As described above, according to the present invention, the following effects are exhibited.

According to the first, sixth and eighth aspects of the present invention, the saddle portion of the pipe repair material is melted and integrated with the lining pipe. As a result, without using an underwater curable resin or an adhesive, a pipe repairing material is attached to the joint between the buried main pipe and the mounting pipe so that the water stopping performance can be obtained in this part. . Therefore, the work of attaching the repair material can be performed in a short time, and the work can be speeded up. Therefore, even when a plurality of repair locations are provided, the time required to repair all the locations can be significantly reduced. In addition, when the repair material is attached, the saddle part and the lining pipe are integrated by fusion, so that the water stopping performance at the joint between the buried main pipe and the mounting pipe can be obtained well, Highly reliable repairs can be performed.

According to the second aspect of the present invention, the saddle portion can be fused to the inner peripheral surface of the liner tube by a relatively simple operation such as energizing the heating wire, and good workability can be obtained. it can. In addition, by appropriately setting the embedment position of the heating wire, it is possible to arbitrarily obtain a fusion position and a fusion area of the saddle portion with respect to the lining tube, thereby improving design flexibility such as a shape of a repair material. Can be planned.

According to the third, seventh and ninth aspects of the present invention, since the cylindrical portion has a double pipe structure, the length of the cylindrical portion existing inside the mounting pipe can be ensured to be long. As a result, it is possible to improve the water stopping performance at the joint between the buried main pipe and the mounting pipe. In addition, since the length of the cylindrical portion when the repair material is transported to a predetermined position in the buried main pipe can be shortened, the repair material can be smoothly transported in the buried main pipe, and workability is improved. Improvement can be achieved.

According to the fourth aspect of the invention, a water-expandable rubber ring is provided around the outer periphery of the distal end edge of the inner cylinder. For this reason, it is possible to reliably prevent water leakage from between the outer peripheral surface of the inner cylinder and the inner peripheral surface of the mounting pipe. As a result, the reliability of the pipe repair material can be further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view in which a part of a repair material according to an embodiment is broken.

FIG. 2 is a cross-sectional view showing a state in which the repair device is opposed to a mounting pipe in the repair work.

FIG. 3 is a sectional view showing a state where a hydraulic rod is advanced in a repair work.

FIG. 4 is a cross-sectional view showing a state where a push pin is advanced in a repair operation.

FIG. 5 is a sectional view showing a state after completion of the repair work.

6 is a cross-sectional view at a position corresponding to line VI-VI in FIG.

[Description of Signs] 1 Pipe repair material 2 Lining pipe 3 Saddle part 32 Heating wire (heating means) 4 Tube part 41 Outer cylinder 42 Inner cylinder 43 Rubber ring 5 Pipe repair device 51 Adapter (power supply means) 72 Push-in pin ( 8 pressing plate (pressing means)

Claims (9)

[Claims] 1. A resin pipe repair material to be mounted on a joint between a buried main pipe and a fitting pipe joined to an outer peripheral part thereof after the buried main pipe is lined with a resin-lined pipe. A saddle portion along the inner peripheral surface of the lining tube; and a tubular portion integrally formed with the saddle portion and inserted into the inside of the mounting tube. The saddle portion heats the saddle portion. A pipe repair material, characterized by being provided with a heating means for fusing to an inner peripheral surface of a lining pipe. 2. The piping repair material according to claim 1, wherein the heating means is a heating wire embedded in the saddle portion. 3. The pipe repair material according to claim 1, wherein the tubular portion has a double pipe structure of an outer tubular body and an inner tubular body, and the outer tubular body is integrally formed with a saddle portion. On the other hand, the pipe repair material is characterized in that the inner cylindrical body is movable with respect to the outer cylindrical body in the extending direction of the mounting pipe. 4. The pipe repair material according to claim 3, wherein a water-expandable rubber ring is provided around an outer periphery of a distal end edge of the inner cylinder when the expanded state is in an expanded state. A pipe repair material characterized by being used. 5. The pipe repair material according to claim 1, wherein the saddle portion is also formed of polyethylene so as to be fused to the polyethylene lining pipe. Wood. 6. A pipe for mounting a resin pipe repair material at a joint between the buried main pipe and a mounting pipe joined to an outer peripheral portion thereof after the buried main pipe is lined with a resin lining pipe. A repair device, comprising: a pipe repair material having a saddle portion in which a heating wire is embedded and along an inner peripheral surface of a lining tube, and a tubular portion integrally formed with the saddle portion and inserted into the inside of the mounting tube. Power supply means for supplying power to the heating wire, and pressing means for pressing the saddle portion against the inner peripheral surface of the liner tube when power is supplied to the heating wire by the power supply means. A pipe repairing device characterized by being carried out. 7. The pipe repair device according to claim 6, wherein the inner cylindrical body of the cylindrical portion having a double pipe structure of the outer cylindrical body and the inner cylindrical body is provided.
A pipe repairing device comprising a pushing means for pushing forward in the extension direction of the fitting pipe and pushing it into the fitting pipe. 8. A method for repairing a pipe in which after a buried main pipe is lined with a resin lining pipe, a resin pipe repair material is attached to a joint between the buried main pipe and a mounting pipe joined to an outer peripheral portion thereof. Using a pipe repair material having a saddle portion along the inner peripheral surface of the lining pipe and a tubular portion formed integrally with the saddle portion and inserted into the inside of the mounting pipe; A pipe repair method comprising: inserting a tubular portion into an interior of a mounting pipe, aligning a saddle portion along an inner peripheral surface of the lining tube, heating the saddle portion, and fusing the saddle portion to an inner peripheral surface of the lining tube. . 9. The pipe repair method according to claim 8, wherein the tubular portion has a double pipe structure of an outer tubular body and an inner tubular body, and after the tubular portion is inserted into the inside of the mounting pipe, A method for repairing a pipe, characterized in that a pushing operation is performed in which an inner cylindrical body is advanced in an extending direction of a mounting pipe and is pushed into the mounting pipe.