JPH06229496A - Mending method for pipe material - Google Patents

Abstract

(57) [Summary] [Purpose] A sealing material is attached to the inner surface of the intersection of pipe materials such as sewer pipes and drainage pipes for repair. [Structure] A sealing material 2 is attached to the surface of an inflatable repair frame material 1 having a horizontal portion 11 and a vertical portion 12 and is contracted to move the inside of the first tubular material A to move the first tubular material A.
After moving to the intersection C between the second pipe material B and the second pipe material B, the repair frame material 1 is expanded so that the vertical portion 12 faces the inside of the second pipe material B and the sealing material 2 on the surface is applied to both pipe materials A. , B after being attached to the inner surface of the intersection C, the repair frame material 1 is contracted to move inside the first pipe material A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe material repairing method for improving liquid-tightness and air-tightness by additionally providing a sealing material on an inner surface of a crossing portion of a pipe material such as a sewer pipe and a drain pipe.

[0002]

2. Description of the Related Art Conventionally, pipe materials such as sewer pipes and drain pipes are
It is roughly divided into a trunk pipe having an inner diameter of 200 to 1000 mm and connecting to a treatment plant, and a branch pipe branching from the trunk pipe and connected to a sewage outflow mechanism of each household. The branch pipe has a smaller diameter than the main pipe, is almost vertical, and often intersects in a T shape. The intersection of the main pipe and the branch pipe, the intersection of the main pipes, and the like are susceptible to external stress such as earthquake, ground subsidence, or vibration of traffic due to the physical configuration, and moreover, distortion during manufacturing or the like may occur. Especially when it is left, damage such as cracks is likely to occur. When such damage occurs, for example, groundwater or rainwater that permeates into the ground flows into the inside of the pipe material, and since it flows into the treatment plant as it is, the amount of wastewater treated in the treatment plant increases, and it is set. It causes the phenomenon that the processing capacity of the existing processing plant is exceeded.
Also, depending on the area, sewage in pipe materials may penetrate into the ground,
Depending on the type of wastewater, it may cause environmental damage.

As a method of repairing damage to the intersections of such pipes, first, a water-stopping material that expands by introducing air or the like is used to block the intrusion of water into the damaged parts, and then There is a method in which cement milk is press-fitted into the soil, the cement milk is exuded from the damaged portion into the ground, and then the cement milk is discharged. Then, after sufficiently curing and hardening the cement milk that has exuded into the ground from the damaged part,
The water blocking material is removed, that is, the damaged portion is closed with cement milk exuded into the ground.

[0004]

However, the above-mentioned conventional repair method is practically limited to concrete-made pipe materials because cement milk does not sufficiently adhere when the pipe materials are metal pipes or resin pipes. It was something. In addition, a huge amount of cement milk has to be used, the work is extremely troublesome, and the construction cost is high, and the treatment of this cement milk is also expensive. Furthermore, since the curing time for hardening the cement milk is required, the construction time is extremely long. In addition, since cement milk is strongly alkaline, it has been feared that its exudation into the ground will adversely affect the environment.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been proposed in view of the above circumstances, and has a sealing material attached to the surface of an inflatable repair frame member having a horizontal portion and a vertical portion and in a contracted state. After moving the inside of the first pipe member to the intersection of the first pipe member and the second pipe member, the repair frame member is inflated to expose the vertical portion to the inside of the second pipe member and the surface. The present invention relates to a method for repairing a tubular material, wherein the sealing material is attached to the inner surface of the intersection of the two tubular materials, and then the repair frame material is contracted to move inside the first tubular material.

Further, according to the present invention, a control device is connected to the repair frame member, and the control device is provided with a traveling mechanism capable of moving back and forth and an angle adjusting mechanism for changing the angle of the repair frame member. It also proposes a method of repairing a pipe material in which a repairing frame material is made to behave by a control device.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments of the drawings.

The method of repairing a pipe material according to the present invention is, in general, an inflatable repair frame material 1 having a lateral portion 11 and a longitudinal portion 12.
Is performed by moving, expanding, contracting, or the like, and the sealing material 2 attached to the surface is attached to the inner surface of the intersection C between the first pipe material A and the second pipe material B for repair. .
In addition, as shown in FIG. 1, the first pipe material A is a trunk pipe communicating with the treatment plant, and the second pipe material B is a branch pipe to be distributed to each household.

As shown in FIG. 2, the repair frame member 1 has a horizontal portion 11 and a vertical portion 12. In the illustrated embodiment, a flexible material such as rubber is used as the end portion of the vertical portion 12. Is formed by molding so as to have a substantially T-shaped space portion that is closed, and can be expanded by filling the inside with air or the like. The outer diameters of the lateral portion 11 and the vertical portion 12 are set according to the inner diameter of the pipe material to be applied. That is, the lateral portion 11 is formed so as to be smaller than the inner diameter of the first pipe material A in the contracted state and larger than the inner diameter of the first pipe material A in the expanded state, and the vertical portion 12 is smaller than the inner diameter of the second pipe material B in the contracted state. In the expanded state, it is molded so as to be larger than the inner diameter of the second pipe material B. Further, both ends of the lateral portion 11 are closed by disk-shaped end plates 13 and 13, and support shafts 14 and 14 that connect the end plates 13 and 13 and face each other in parallel are provided inside thereof. The pedestals 15 and 15 are attached to the lower part of the one end plate 13,
The bottom of the lateral portion 11 is prevented from coming into contact with the inner wall of the first pipe A when the repair frame 1 is run. In addition, the other end plate 13 is provided with a short-cylindrical ventilation port 16 for introducing and discharging air and the like. Although the pedestals 15 and 15 are attached so as not to be detached from the one end plate 13, the pedestals 15 and 15 are always located at the lowermost end even if the end plate 13 rotates.

The sealing material 2 attached to the surfaces of the lateral portion 11 and the vertical portion 12 of the repair frame material 1 has liquid-tightness and air-tightness, and has adhesiveness on the surface. . And, although the material and the constitution thereof are not particularly limited, when a thin glass fiber sheet obtained by polymerizing several sheets with an epoxy resin is used as the seal member 2, for example, 3
Since it cures in about 0 minutes, workability is improved, and after curing, it has extremely high film strength. As shown in FIGS. 3 and 4, the sealing material 2 is molded into a shape substantially similar to the horizontal portion 11 and the vertical portion 12 of the repair frame material 1,
Even when the repair frame material 1 is contracted, the repair frame material 1 is attached so as not to separate from the surface thereof.

Further, in the illustrated embodiment, a control device 3 having a traveling mechanism and capable of moving the repair frame member 1 back and forth is connected. The control device 3 includes a main body 3
1 has a configuration in which a short cylindrical ventilation portion 32 is projected from one end, and this ventilation portion 32 is connected to the ventilation hole 16 and is also physically connected by a connecting member 17 provided in the ventilation hole 16, It is connected integrally with the repair frame material 1. Further, the ventilation portion 32 is provided with a rotating member 33, and the rotating member 33 is integrally connected to the end plate 13. Further, support legs 34, 34 for supporting the main body 31 are provided at the bottom of the main body 31. A traveling mechanism and an angle adjusting mechanism are provided inside the main body 31. The repair frame member 1 can be moved back and forth by transmitting the drive of the running mechanism to the support legs 34, 34 and running in the front-back direction. Further, by transmitting the drive of the angle adjusting mechanism to the rotating member 33 to rotate the rotating member 33, the repair frame member 1
The angle of the vertical portion 12 of the can be adjusted. In addition, the other end of the main body 1 is provided with an introduction portion 35 and a lead-out portion 36 that communicate with the ventilation portion 32 inside the main body 1, respectively.
A traveling drive relay unit 37 and an angle adjustment drive relay unit 38, which are in communication with the internal traveling mechanism and the angle adjusting mechanism, are provided.

It should be noted that the introduction portion 35, the derivation portion 36, the traveling drive relay portion 37, and the angle adjustment drive relay portion 38 of the control device 3 are respectively provided with a long introduction pipe 4, a derivation pipe 5, and a traveling connection pipe 6. , One end of the connection pipe 7 for angle adjustment is attached, and the other end of each is connected to an operation device 8 on the ground, and the operation device 8 controls each.

An example of construction for repairing the intersection C between the first pipe material A and the second pipe material B using the apparatus having the above construction will be described below.

First, the first pipe material A is previously made by using a water blocking material or the like.
The invasion of water into the inside of each of the second pipe material B and the intersection C thereof is blocked. After that, the repair frame material 1 and the control device 3 having the above-described configuration are inserted into the first pipe material A from the manhole D or the like. It should be noted that the repair frame material 1 includes the above-mentioned sealing material 2 in advance in the lateral portion 1
1 and the vertical portion 12 are inserted in a state of being attached to the outer surfaces of the vertical portions 12, but when the sealing material 2 used is a thin glass fiber sheet obtained by polymerizing several thin glass fiber sheets with an epoxy resin, the curing time is taken into consideration. The repair frame material 1 may be attached immediately before it is inserted into the first pipe material A.

Next, air or the like is supplied from the operation device 8 on the ground, and the supplied air or the like is introduced into the traveling mechanism in the control device 3 via the traveling connecting pipe 6 and the traveling drive relay portion 37,
With this traveling mechanism, the pressure of air or the like is converted into a driving force in the front (rear) direction and transmitted to the support legs 34, 34, and the vertical portion 11 and the horizontal portion 12 are contracted as shown in FIG. The repair frame material 1 is moved to the intersection C.

Further, air or the like is supplied from the operation device 8 on the ground, and the supplied air or the like is introduced into the angle adjusting mechanism in the control device 3 via the angle adjusting connecting pipe 7 and the angle adjusting drive relay section 38. Then, with this angle adjusting mechanism, the pressure of air or the like is converted into a rotational force and transmitted to the rotating member 33, and the vertical portion 12 of the repair frame member 1 is rotated so as to face the second pipe member B to perform the angle adjustment. .

A camera (not shown) is used in advance to repair the frame material 1
By controlling the traveling and the angle adjustment while mounting the camera on the monitor and checking the image from the camera on the monitor mounted on the operation device 8, the stop position and the position of the vertical portion 12 can be set very easily.

After moving the repair frame material 1 to the intersection C,
Air or the like is supplied from the operating device 8, and the supplied air or the like is introduced through the introduction pipe 4, the introduction portion 35, and the ventilation portion 32 into the ventilation port 1
By being introduced into the repair frame material 1 from 6, the lateral portion 11 and the vertical portion 12 are expanded as shown in FIG.

When the lateral portion 11 and the longitudinal portion 12 expand,
The sealing material 2 attached to the outer surface thereof follows the expansion and faces the intersection C, is pressed by the horizontal portion 11 and the vertical portion 12, and is attached (transferred) to the intersection C. At that time, the outer surface of the sealing material 2 has adhesiveness and is easily fixed by pressing on the intersection C, but the setting of the pressing time, that is, the expansion time of the horizontal portion 11 and the vertical portion 12 is used. It may be appropriately performed according to the characteristics of the sealing material 2.

As shown in FIGS. 7 and 8, after the sealing material 2 is attached, air or the like is sucked from the operating device 8 and is led from the vent 16 through the outlet pipe 5, the outlet 36, and the vent 32. The horizontal portion 11 and the vertical portion 12 are contracted by sucking and drawing out air and the like inside the repair frame material 1.

Then, as described above, the control of the operating device 8 is transmitted to the traveling mechanism and the supporting legs 34, 34 in the control device 3, and the control device 3 and the repaired frame material 1 in the contracted state are moved to the manhole D. , Just pull it to the ground.

As described above, the pipe repairing method of the present invention is extremely easy and can be performed in a short time as compared with the conventional method of press-fitting cement milk, and the pipes (A, B) are made of different materials. The present invention is not limited to this, and can be applied to a metal or resin pipe material by appropriately selecting the sealing material 2 to be used.

Further, since the angle adjusting mechanism is provided, even if the second pipe member B is not arranged vertically, the seal member 2 can be securely provided.
Can be attached to the inner surface of the intersection C.

Although the present invention has been described above based on the embodiments, the present invention is not limited to the above-mentioned embodiments, and can be carried out in any manner as long as the configuration described in the claims is not changed. You can

For example, the traveling mechanism has a structure in which the pressure of air or the like supplied from the operation device 8 on the ground is converted into a drive in the front (rear) direction and moved, but control by electric means is performed. You can That is, in this case, a motor or the like may be provided as the traveling mechanism, and the traveling electric wire may be provided in place of the traveling connecting pipe 6. Similarly, the angle adjusting mechanism may be controlled by electric means.

[0026]

As described above, according to the method of repairing a pipe material of the present invention, the repair frame material is moved to the intersection of the first pipe material and the second pipe material in a contracted state, and the repair frame material is expanded there. By adding the sealing material to the inner surface of the intersecting part, and then moving the repair frame material again in the contracted state, the damaged part can be repaired very easily and reliably. is there.

Further, the pipe material repairing method of the present invention does not produce waste material such as an excessive amount of cement milk at all, unlike the conventional repairing method of press-fitting cement milk, and has no influence on the environment. Is.

Further, since the pipe repairing method of the present invention does not require a great amount of time to attach the sealing material to the inner surface of the intersection, the work can be carried out in an extremely short time. Is.

Further, if the sealing material used in the present invention is appropriately selected, the material of the pipe material is not limited and can be applied to various pipe materials. The present invention can be applied not only to existing pipes, but also for the purpose of reinforcing the inner surface of the intersection portion of the pipes before being buried.

Since the pipe material repaired by the present invention is provided with the sealing material on the inner surface of the intersection, the airtightness and the liquidtightness of the intersection can be improved.

Further, a control device is connected to the repair frame material, and a traveling mechanism capable of moving back and forth to the control device and an angle adjusting mechanism for changing the angle of the repair frame material are provided, and the repair device is repaired by the control device. By making the frame material behave, the above-mentioned construction work can be performed more easily and surely, and even if the second pipe material is not arranged vertically, the sealing material is surely attached to the inner surface of the intersection. Can be installed.

Furthermore, when a sealing material obtained by polymerizing several glass fiber sheets with an epoxy resin is used, the sealing material itself has adhesiveness, has high strength after curing, and has durability such as water resistance. Is extremely high, the airtightness and the liquidtightness of the inner surface of the intersecting portion are significantly improved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an embodiment of a repair frame member and a control device used in the present invention.

FIG. 3 is a side view showing how the sealing material adheres to the repair frame material of FIG.

FIG. 4 is a side view showing a state in which a sealing material is attached to the repair frame material of FIG.

5 is a partially cutaway side view showing a running state of the repair frame member in FIG. 2 in a first pipe member. FIG.

6 is a partially cutaway side view showing an expanded state of the repair frame member of FIG. 2. FIG.

FIG. 7 is a side sectional view showing a state in which a sealing material is attached to the inner surface of the intersection.

FIG. 8 is a vertical cross-sectional view showing a state in which a sealing material is attached to the inner surface of the intersection.

[Explanation of symbols]

 1 Repair Frame Material 11 Horizontal Part 12 Vertical Part 2 Sealing Material 3 Control Device A First Pipe Material B Second Pipe Material C Intersection

Claims (3)

[Claims] 1. A first pipe material and a second pipe material, wherein a sealing material is attached to the surface of an inflatable repair frame material having a horizontal portion and a vertical portion, and the inside of the first pipe material is moved in a contracted state. After moving to the intersection with and after making the above-mentioned repair frame material in an expanded state and exposing the vertical portion to the inside of the second pipe material and attaching the surface sealing material to the inner surface of the intersection portion of both pipe materials, A method of repairing a pipe material, wherein the repair frame material is contracted to move inside the first pipe material. 2. A repair frame member is connected to a control device, and the control device is provided with a traveling mechanism capable of moving back and forth and an angle adjusting mechanism for changing the angle of the repair frame member, and repaired by the control device. The method for repairing a pipe material according to claim 1, wherein the frame material is made to behave. 3. The method for repairing a pipe material according to claim 1, wherein a sealing material obtained by polymerizing several glass fiber sheets with an epoxy resin is used.