JPH10286878A - Method for repairing main pipe and lateral sewer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a repair method for a main pipe and a lateral sewer in which the inside of the main pipe is lined with a first long tube material having a photosetting or thermosetting water sealing agent from a manhole on one side to the manhole on the other side and also the inside of a lateral sewer connected thereto is similarly lined with a second tube material and watertightness of the connection part is completely secured. SOLUTION: In the repair method for a main pipe and a lateral sewer, there are provided with a process for curing a first tube material 4 while completely incorporating an opening 2 for the lateral and contact-bonding the first tube material 4 to the inner circumferential face of the main pipe 1, a process for cutting the opening 2 part for the lateral sewer of the first tube material 4, a process for inserting a second tube material 5 so as to reach the opening 2 for a lateral sewer 3 and curing the second tube material 5 while contact- bonding it, a process for cutting the opening 2 part for the lateral sewer of the second tube material 5 and a process for curing flexible repair material 6 fitted with a supporting pipe part while integrally contact-bonding the repair material 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of repairing both a main pipe in a sewer and an attachment pipe which joins the main pipe via a square section.

[0002]

2. Description of the Related Art As a device for bonding a cylindrical lining laminate containing a water sealant made of a photocurable resin liquid to the inner peripheral surface of a sewage main pipe while curing the same, it is disclosed in Japanese Patent Publication No. -4
No. 1670 and others have been proposed. This device introduces a flexible lining laminate in the form of a hose from one manhole into the other manhole and then feeds compressed air inside to keep the laminate pressed against the inner surface of the pipeline. Then, the lining laminate is cured by light energy from a lamp such as an ultraviolet radiation lamp.
If such a device is used, not only the main pipe but also the entire inner peripheral surface of the mounting pipe (branch pipe) connected to the main pipe can be similarly repaired.

[0003]

However, even if the main pipe or the mounting pipe is repaired using a hose-type lining laminate, it is difficult to completely seal the connection between the two pipes. Further, the conventional invention does not solve how to handle the opening when the attachment pipe is connected to the main pipe. Therefore, an object of the present invention is to propose a method for repairing a main pipe and a fitting pipe that can simultaneously solve the various problems.

[0004]

According to the method for repairing a main pipe and a mounting pipe according to the present invention, a tip of a mounting pipe 3 is formed into a T-shape or a T-shape in a mounting pipe opening 2 formed on the outer periphery of a main pipe 1. The connected one has the following steps (1) to (3). (1) The length of the main pipe 1 from one manhole 21 to the other manhole 21 is completely included in the entire inner peripheral surface of the main pipe 1 so that the mounting pipe opening 2 is closed. A step of curing the first tubular material 4 while pressing the tubular long flexible first tubular material 4 containing a water sealant, and then forming the first tubular material 4 in the mounting pipe opening 2. A first cutting and opening step of cutting and opening a closed portion by the tube material 4, (2) including a mounting pipe opening 2 on the entire inner peripheral surface of the mounting pipe 3 which needs to be substantially repaired; Opening 2
And pressing the cylindrical long flexible second tube material 5 containing a water sealant so that the second tube material 5 is hardened, and then the mounting tube opening (2) a second cutting and opening step of cutting and opening a closed portion formed by the second tube material 5; (3) the T-shaped or the T-shaped of the main pipe 1 and the mounting pipe 3 including the mounting pipe opening 2; A step of curing the repair material 6 while integrally pressing the flexible repair material 6 with a short branch pipe containing a water sealant on the inner surface of the connecting portion. According to the present invention, by using such a method, the entire length of the main pipe and the entire length of the attached pipe can be uniformly repaired, and the connection portion of both pipes can be completely integrated to perform repair without water leakage accident.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a method for repairing a main pipe and a mounting pipe according to the present invention will be described with reference to the drawings. FIG.
Shows an example of a first step of the method for repairing a main pipe and a fitting pipe of the present invention, FIG. 2 shows the second step, and FIG. 3 shows the third step. FIG. 4 is a perspective view of the repair material 6 used in the third step, and FIG. 5 is a sectional view of a main part of the main pipe 1 and the mounting pipe 3 repaired by the repair method. FIG. 6 is a perspective view showing another example of the repair material 6. In this example, the main 1
The repair section is defined as a section between one adjacent manhole 21 and the other manhole 21, and the first repair is performed in that section. For this purpose, a tubular and long flexible first tube member 4 containing a water sealant made of a photocurable resin liquid is drawn into the main tube 1. Although the drawing method is not shown, an ordinary well-known drawing method can be used.

Alternatively, a known tube inversion method can be used. That is, one end opening of the first tube material cut to a predetermined length is closed, it is suspended from one end side of the tube material winding body 12, and the other end is a guide tube.
The guide tube 10 is guided inside, and the other end opening is air-tightly fastened to the leading end opening of the guide cylinder 10 by a fastening band 15. Then, air 23 is supplied from the air supply unit 11, and the inner and outer surfaces of the first tube member 4 are reversed while the first tube member 4 is pushed into the main pipe 1 by the air pressure. In either case, air is pushed into the first tube member 4 by a compressor or a blower, and the peripheral surface of the first tube member 4 is pressed against the main tube 1. Further, this crimping method is also known, and the air 23 is supplied to the air supply unit 11 and the guide tube 10 while the other end opening of the first tube member 4 whose one end is closed is fixed to the opening of the guide tube 10. Then, it is supplied into the first tube member 4. A mounting pipe 3 is connected to the main pipe 1 through a mounting pipe opening 2.

The mounting pipe opening 2 is completely closed by the first tube member 4 by the repair work. For example, the first tube member 4 is formed by coating or impregnating a water sealant made of a photo-curable resin liquid from the inner and outer surfaces of a glass fiber woven fabric or the like formed in a cylindrical shape. The lamp derivative 8 is movably inserted into the first tube member 4 via the guide tube 10. An ultraviolet radiation lamp 7 is attached to the lamp derivative 8, and an electric cable (not shown) is connected thereto. In this example, the lamp derivative 8 is provided with a plurality of wheels 18, which come into contact with the inner surface of the first tube member 4. Then, with the ultraviolet radiation lamp 7 turned on, the lamp derivative 8 is moved by the wire 9 to sequentially cure the inner surface of the first tube member 4, and the first tube member 4 lines the inner peripheral surface of the main tube 1. In addition,
Although only one UV radiation lamp 7 is shown in the figure,
A plurality of the lamps 7 may be connected. Thereby, the curing speed of the tube material can be increased. Next, a portion of the first tube member 4 that closes the attachment tube opening 2 of the attachment tube 3 is cut by a cutter.

Next, the second tube member 5 is inserted into the attachment tube 3 including the opening 2 for the attachment tube, and the second tube member 5 is pressed against the inner peripheral surface of the attachment tube 3 by air pressure in the same manner as described above. The second tube member 5 is also formed in a long and cylindrical shape including a water sealant made of a photo-curable resin liquid, and one end thereof is closed, and one end thereof penetrates into the main pipe 1. Is crimped to the mounting tube 3. Then, by inserting a lamp derivative 8 having an ultraviolet radiation lamp 7,
Is lined in the same manner as described above. Then, a portion of the tip of the second tube material 5 protruding from the main pipe 1 is cut by a cutter. Next, as an example, the repair material 6 shown in FIG.
At the joint between the mounting pipe 3 and the main pipe 1. The repair material 6 includes a flat plate portion 6a and a branch pipe portion 6b provided at the center thereof.
Similarly, a water sealant made of a photocurable resin liquid is applied or impregnated on the inner and outer surfaces of the glass fiber material.

Such a repair material 6 is attached to the outer periphery of a repairing machine 25 for a joint portion of a fitting pipe, and is simultaneously pressed to a joint portion between the fitting pipe 3 and the main pipe 1. The repairing machine 25 for the attachment pipe joint has a pair of outer lids 16 at both ends thereof, and a cylindrical light transmitting cylindrical rubber member 24 is hermetically fixed to the outer periphery thereof. A cylindrical projection 26 having a closed end is provided in the middle of the rubber material 24. This protrusion 26
Is also made of a light-transmitting rubber material, and expands in the radial direction by supplying air 27 to the inside thereof, so that the repair material 6 is press-fitted to the connection between the mounting pipe 3 and the main pipe 1. The center of the upper end of the projection 26 is closed by a transparent plate 36, and a reinforcing reflector 34 shown in FIG. The television camera 31 is integrally fixed to the transparent plate 36 inside the center of the projection 26. A rigid airtight container 29 is fixed to the center of the pair of outer lids 16 of the repair machine 25 via a mounting member 28, and an ultraviolet radiation lamp 7 is provided inside.
Is provided.

The airtight container 29 is made of a transparent plastic or glass cylinder, and as shown in FIG. 7, an elongated reflector 32a is partially adhered thereto, and transparent portions and reflective portions are formed alternately. The reflection plate 32 is constituted by a set of reflection portions. Further, the reflector 32 of FIG. 8 may be used instead of the reflector 32 of FIG. The reflector 32 shown in FIG. 8 has a large number of reflectors 32a having a circular cross section arranged at equal intervals in the longitudinal direction of the airtight container 29. These reflectors 32 transmit light to the projections 26.
Reflects in. In addition, light passes through the transparent portion between the reflectors 32a, and is irradiated to the repair material 6 pressed on the main pipe 1. Note that these reflectors 32 are not indispensable, and are omitted when light can be sufficiently reflected on the inner surface of the protruding portion 26 only by the operation of another reflector 33 described below. Next, reflectors 33 are arranged at both ends in the axial direction of the airtight container 29, and the direction of reflection is projected.
It is aimed at 26 inner faces. That is, this reflection plate 33 is
Since the cross section is formed in an arc shape in both the plane direction and the gravity direction, the light reaching the inner surface is efficiently reflected on the inner surface of the projection 26. Instead of the reflecting plate 33, reflecting plates (not shown) having a hemispherical concave inner surface may be arranged at both axial ends of the hermetic container 29 with the center thereof facing the inner surface of the projection 26.

Next, in the airtight container 29, air 30 for cooling is provided.
Are supplied in and out freely. The cooling air 30 in the hermetic container 29 is controlled by a temperature sensor provided inside, and the inside of the hermetic container 29 is kept at a certain temperature or less to prevent the light-transmitting cylindrical rubber member 24 and the like from overheating. It is formed so as to be maintained. The control of the air 30 in the hermetic container 29 and the air 27 supplied into the light-transmitting cylindrical rubber member 24 are controlled separately and independently. If necessary, the air 27 supplied to the inside of the light-transmitting cylindrical rubber member 24 may be appropriately replaced. Also, on the inner surface of the outer lid 16 located on the right side, a side lid drive motor 19 with a speed reducer is fixed, a drive gear is attached to its output shaft, and the drive gear is driven by a driven gear to the bracket 20 with respect to the bracket 20. The pair of outer lids 16 is rotated, and the light-transmitting cylindrical rubber member 24 is rotated accordingly, so that the direction of the projection 26 is aligned with the mounting tube 3.

Then, by turning on the ultraviolet radiation lamp 7 in the airtight container 29, the light energy is supplied to the repair material 6 via the light-transmitting cylindrical rubber material 24, and it is cured. Then, the second tube member 5 and the first tube member 4 are joined to each other through the repair member 6 in a liquid-tight manner. In addition,
Although the repair material 6 shown in FIG. 6 may be used instead of the repair material 6 shown in FIG. 4, the repair material 6 in FIG. 6 is simpler than that in FIG. The repair material shown in FIG. 4 is more excellent in terms of the ability to be integrated with the second tube member 5.

[0013]

[Other Embodiments] In the above embodiment, first, the main pipe 1
The inside is lined, then the mounting pipe 3 is lined, and finally both joints are lined. However, the lining order of the main pipe 1, the mounting pipe 3 and the seam is either first. You may. For example, an example in which the procedure is performed in the order of the mounting pipe 3-the main pipe 1-the joint portion of both, the joint portion of the both-the mounting pipe 3-
There is an example in which lining is performed in the order of the main pipe 1, an example in which lining is performed in the order of the mounting pipe 3-a joint portion of the two pipes and the main pipe 1, and an example in which lining is performed in the order of the main pipe 1-a joint portion of the both pipes and the mounting pipe 3. In these examples, the case where there is one attachment pipe 3 from one manhole to the other manhole is shown as a representative, but when there are a plurality of attachment pipes 3, each attachment pipe 3 is also provided according to the above-mentioned repair method. 3 and their seams can be repaired. In the above embodiment, the first tube member 4, the second tube member 5, and the repair member 6 are each lined by using a water sealant made of a photocurable resin liquid.
Alternatively, by using a thermosetting repair material and a repair machine therefor, the inner surface of the pipe can be lined in the same manner as described above.

[0014]

The method for repairing a main pipe and a mounting pipe according to the present invention comprises the steps of: pressing a long first tube material 4 to the main pipe 1 including its mounting pipe opening 2; A step of pressing and curing the long second tube member 5 on the attachment tube 3 with the attachment tube opening 2 opened, and a joint portion of the first tube member 4 and the second tube member 5 integrally. Has a step of hardening while being pressed by the repair material 6, so that the workability of repairing the main pipe 1 and the mounting pipe 3 is good,
The joint portion between the two can be completely closed, and highly reliable repair can be performed. In other words, the joint between the first tube member 4 and the second tube member 5 has poor sealing properties, but the presence of the repair material 6 superimposed on them makes it possible to completely integrate the two and waterproof them. .

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an example of a first step of a method for repairing a main pipe and an attached pipe according to the present invention.

FIG. 2 is a schematic cross-sectional view of a main part showing a second step.

FIG. 3 is a schematic cross-sectional view of a main part showing a third step.

FIG. 4 is a perspective view of a repair material 6 used in the third step.

FIG. 5 is a sectional view of a main part of the main pipe 1 and the mounting pipe 3 repaired by the repair method.

FIG. 6 is a perspective view showing another example of the repair material 6 in FIG.

FIG. 7 is a cross-sectional perspective view of a reflector 32 of the repair machine 25 used in the repair method.

FIG. 8 is a sectional perspective view of another reflection plate 32 used in the repair machine.

FIG. 9 is a partially broken perspective view of a reinforcing reflector 34 used in the repair machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main pipe 2 Opening for mounting pipe 3 Mounting pipe 4 First tube material 5 Second tube material 6 Repair material 6a Flat plate part 6b Branch pipe part 7 Ultraviolet radiation lamp 8 Lamp derivative 9 Wire 10 Guide cylinder 11 Air supply unit 12 Tube material winding Body 14 Closed end 15 Fastening band 16 Outer lid 17 Inner lid 18 Wheel 19 Motor 20 Bracket 21 Manhole 22 Masu 23 Air 24 Light transmissive cylindrical rubber material 25 Repair machine 26 Protrusion 27 Air 28 Mounting material 29 Airtight container 30 Air 31 TV camera 32 Reflector 32a Reflector 33 Reflector 34 Reinforcement reflector 35 Reflected light 36 Transparent plate

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yuji Yamaoka 2-14-5 Katsuradai, Aoba-ku, Yokohama-shi, Kanagawa Prefecture (72) Inventor Shinkichi Ooka 1-15-123 Horinouchi, Suginami-ku, Tokyo

Claims (5)

[Claims] In a method for repairing a main pipe and a mounting pipe in which a tip of a mounting pipe is connected to a mounting pipe opening formed on an outer periphery of the main pipe in a T-shape or a T-shape, the following method is used. 1) ~
A method for repairing a main pipe and a fitting pipe having the step (3). (1) The length of the main pipe 1 from one manhole 21 to the other manhole 21 is completely included in the entire inner peripheral surface of the main pipe 1 so that the mounting pipe opening 2 is closed. A step of curing the first tubular material 4 while pressing the first tubular material 4 in a tubular shape containing a water sealant, and then the first tubular material 4 of the mounting pipe opening 2. A first cutting and opening step of cutting and opening a closed portion by the tube material 4; (2)
The entire inner peripheral surface of the mounting pipe 3 that needs to be repaired includes the mounting pipe opening 2 so that the mounting pipe opening 2 is closed. A step of curing the second tube member 5 while pressing the flexible second tube member 5; and a second step of cutting and closing the closed portion of the attachment tube opening 2 with the second tube member 5. Cutting opening process, (3)
The above T of the main pipe 1 and the mounting pipe 3 including the mounting pipe opening 2
A step of curing the repair material 6 while integrally pressing the flexible repair material 6 with a short branch containing a water sealant on the inner surface of the U-shaped or T-shaped connection portion. 2. The method according to claim 1, wherein the step (2) is performed after the step (1) or in the reverse order.
Repair method of main pipe and mounting pipe which performs the above process. 3. The method according to claim 1, wherein one of the steps (1) and (2) is performed, then the step (3) is performed, and finally the other step is performed. 4. The method for repairing a main pipe and a mounting pipe according to claim 1, wherein one of the steps (1) and (2) is performed after the step (3), and the other is performed last. 5. In any one of claims 1 to 4,
A method for repairing a main pipe and a mounting pipe, wherein the water sealant is a thermosetting or photocuring one.