JPH1177829A - Jig for marking a branch pipe opening and pipe lining method - Google Patents

Abstract

(57) [Summary] [Purpose] A jig for marking a branch pipe opening capable of easily finding a branch pipe opening and accurately drilling a hole in a main pipe lining material along the same, and a pipe lining method using the same. To provide. A notch cylindrical holding member 2 closely fitted to the inner peripheral surface of a main pipe 10 is provided with a projection 3 having an opening having substantially the same shape as the branch pipe opening 11a. Holding member 2
A jig 1 for marking a branch pipe opening projecting from the inner surface or inner and outer surface of the main pipe 10 is introduced into the main pipe 10, and the projection 3 of the jig 1 is positioned at the branch pipe opening 11a and held there. The member 2 is closely fitted to the inner peripheral surface of the main pipe 10, and the jig 1 is attached to the main pipe 1.
After that, the main pipe 10 is lined using a main pipe lining material 12 obtained by impregnating an uncured liquid curable resin into a tubular resin adsorbent, and the jig 1 for marking a branch pipe opening is marked. The main pipe lining material 12 is perforated along a mark 12a having the same shape as the branch pipe opening 11a formed so as to project from the main pipe lining material 12 by the projection 3 of the main pipe.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for marking a branch pipe opening which serves as a mark for drilling a main pipe lining material used for lining a main pipe, and a pipe lining method using the same.

[0002]

2. Description of the Related Art When a pipeline such as a sewer pipe buried underground is deteriorated, the pipeline is repaired by lining the inner peripheral surface thereof without excavating the pipeline from the ground. A pipe lining method has been proposed and is already in practical use.

[0003] The above-mentioned pipe lining method is a method in which a pipe lining material obtained by impregnating a flexible resin adsorbent whose outer peripheral surface is covered with a highly airtight film with an uncured liquid curable resin is applied to a pipe by fluid pressure. After the tube lining material is inverted and inserted into the channel, the tube lining material is pressed against the inner peripheral surface of the channel, and while maintaining the state, the tube lining material is heated or the like to cure the curable resin impregnated therein. This is a method of lining the inner peripheral surface of a pipe with a hardened pipe lining material to repair the pipe.

[0004] When lining a main pipe such as a sewer pipe having a branch pipe, an opening to the main pipe of the branch pipe (branch pipe opening) is closed by the main pipe lining material. Therefore, it is necessary to drill holes in the main pipe lining material.

[0005] By the way, since a person cannot enter the main pipe having a diameter of 800 m / m or less, while the inside of the main pipe is monitored on the ground by a TV camera introduced into the main pipe, the hole is also introduced into the main pipe. It was necessary to drive the cutter by remote control of the robot to make a hole in the main pipe lining material to close the branch pipe opening.

[0006]

However, it is not easy for a TV camera to find the opening of the branch pipe after the main pipe lining is performed, and the hardening pressure (when the main pipe lining material is pressed against the inner wall of the main pipe) during the lining processing. Pressure is set higher than the normal value, the main pipe lining material is depressed toward the branch pipe opening side, and the dent generated in the main pipe lining material is monitored by a TV camera, whereby the position of the branch pipe opening is determined. Had been discovered.

However, when the curing pressure is increased as described above, there is a problem that the liquid curable resin impregnated in the main pipe lining material is squeezed out, moves into the branch pipe, and is cured.

When the main pipe is a sewer pipe in particular, the cross section of the branch pipe opening is not a perfect circle having the same diameter as the diameter of the branch pipe but a non-circular one having a diameter different from the diameter of the branch pipe. In many cases, the dents generated in the main pipe lining material have the shape of a non-circular branch pipe opening, so it is not possible to confirm the exact position to be drilled. Was.

[0009] As a solution to the former problem, a method of inserting an impermeable barrier liner between the main pipe lining material and the main pipe to prevent the liquid curable resin from seeping out, for example, the liquid curable resin is used. In the case of an unsaturated polyester resin, a method of adding and mixing magnesium oxide (MgO) or talc as a filler to increase the viscosity of the liquid curable resin to suppress the movement thereof can be considered. It is impossible to completely prevent the movement of the curable resin.

[0010] There is no effective countermeasure for the latter problem at present.

Therefore, an object of the present invention is to easily find a branch pipe opening and to follow the main pipe lining material along the main pipe lining material without causing the liquid curable resin impregnated in the main pipe lining to flow out. An object of the present invention is to provide a branch pipe opening mark marking jig capable of accurately drilling holes and a pipe lining method using the same.

As shown in FIG. 34, when the branch pipe 111 is mounted obliquely with respect to the main pipe 110, the branch pipe 111 is cut by the cutter 119 when the main pipe lining material 112 is pierced by the cutter 119. There is a problem that the branch pipe 119 is damaged due to the shaving.

Accordingly, an object of the present invention is to provide a jig for marking a branch pipe opening, which can prevent the existing pipe from being damaged by a cutter, and a pipe lining method using the same.

[0014]

In order to achieve the above object, the invention according to claim 1 is characterized in that a part of a notched cylindrical holding member which fits closely to the inner peripheral surface of a main pipe has a branch pipe opening. A protrusion having an opening having substantially the same shape as that of the holding member is provided, and the protrusion protrudes from the inner surface or the inner and outer surfaces of the holding member, thereby forming a branch pipe opening mark marking jig.

According to a second aspect of the present invention, in the first aspect of the present invention, the holding member is made of an elastic plastic, wood or metal, and a diameter of a circumscribed circle before being introduced into the main pipe is measured. It is characterized in that it is set larger than the inner diameter of.

According to a third aspect of the present invention, in the first or second aspect, the circumferential length of the holding member is set to be longer than the semicircular length of the inner surface of the main pipe.

According to a fourth aspect of the present invention, in the first or second aspect, the length of the holding member in the circumferential direction is set shorter than the semicircular length of the inner surface of the main pipe, and the outer length of the holding member is reduced. The surface is impregnated or coated with an adhesive.

According to a fifth aspect of the present invention, a projection having an opening having substantially the same shape as the branch pipe opening is provided on a part of the flange abutting on the peripheral edge of the branch pipe opening on the inner wall of the main pipe, and the projection is retained. A jig for marking a branch pipe opening is formed by projecting from the inner surface or the inner and outer surfaces of the member.

According to a sixth aspect of the present invention, there is provided a holding member comprising a tubular resin adsorbent impregnated with an uncured curable resin, wherein a projection having an opening having substantially the same shape as the branch pipe opening is provided on a part of the holding member.
The projection is projected from the inner surface or the inner or outer surface of the holding member to constitute a branch pipe opening mark marking jig.

According to a seventh aspect of the present invention, a projection having an opening having substantially the same shape as the branch pipe opening is provided on a part of the holding member made of an elastic member which is partially overlapped and rounded,
The projection is projected from the inner surface or the inner or outer surface of the holding member to constitute a branch pipe opening mark marking jig.

According to an eighth aspect of the present invention, in the seventh aspect of the present invention, the holding member is provided with a stopper means for preventing deformation of the holding member in the radial direction.

According to a ninth aspect of the present invention, in the first to seventh or eighth aspects of the present invention, the projection is made of a metal or a material containing a metal so that the projection also functions as a perforation protection member. It is characterized by.

According to a tenth aspect of the present invention, in the ninth aspect, the metal is made of stainless steel.

According to an eleventh aspect of the present invention, in the invention of the first to ninth or tenth aspect, an edge of a portion of the projection protruding from the inner surface of the holding member is formed into a knife edge shape, and the projection is formed into a plate. It is characterized in that it also functions as a thickness reducing member.

According to a twelfth aspect of the present invention, a projection having an opening substantially the same shape as the branch pipe opening is provided on a part of a notched cylindrical holding member that fits closely to the inner peripheral surface of the main pipe. A branch pipe opening mark jig formed by projecting a projection on the inner surface or the inner and outer surface of the holding member is introduced into the main pipe, and the projection of the jig is positioned at the branch pipe opening to hold the holding member. Is tightly fitted to the inner peripheral surface of the main pipe to hold the jig in the main pipe, and then impregnated with an uncured liquid curable resin into a tubular resin adsorbent using a main pipe lining material. The main pipe lining material is perforated along a mark having substantially the same shape as the branch pipe opening formed by projecting the main pipe lining material by the protrusion of the branch pipe opening mark jig. I do.

According to a thirteenth aspect of the present invention, in the twelfth aspect of the present invention, the jig for marking a branch pipe opening is set in a pipe working robot in a reduced diameter state, and the pipe working robot is introduced into the main pipe. When the projection is positioned at the branch pipe opening, the reduced diameter state is released to fix the projection at a predetermined position in the main pipe.

According to the present invention, a projection having an opening having substantially the same shape as the branch pipe opening is provided on a part of the flange abutting on the peripheral edge of the branch pipe opening on the inner wall of the main pipe, and the projection is retained. The protrusion of the branch pipe opening mark jig configured to protrude from the inner surface or the inner and outer surfaces of the member is positioned at the branch pipe opening, and the flange of the jig is positioned at the periphery of the branch pipe opening on the inner wall of the main pipe. The jig is fixed to the inner wall of the main pipe by an anchor bolt inserted into the main pipe, and then the main pipe lining material is used by impregnating an uncured liquid curable resin into a tubular resin adsorbent. The main pipe lining material is perforated along a mark having substantially the same shape as the branch pipe opening formed by projecting the main pipe lining material by the protrusion of the branch pipe opening mark jig. I do.

According to a fifteenth aspect of the present invention, a projection having an opening having substantially the same shape as the branch pipe opening is provided on a part of a holding member made of a tubular resin adsorbent impregnated with an uncured curable resin.
A jig for marking a branch pipe opening formed by projecting the protrusion on the inner surface or the inner and outer surfaces of the holding member is introduced into the main pipe, and the protrusion of the jig is positioned at the branch pipe opening to hold the jig. When the air bag inserted into the tubular resin adsorbent constituting the member is inflated and the tubular resin adsorbent is brought into close contact with the inner peripheral surface of the main pipe, the curable resin impregnated in the tubular resin adsorbent is impregnated. After curing the jig in the main pipe, the main pipe is lined using a main pipe lining material obtained by impregnating an uncured liquid curable resin into a tubular resin adsorbent, and the branch pipe opening is opened. The main pipe lining material is characterized in that a hole is formed in the main pipe lining material along a mark having substantially the same shape as the branch pipe opening formed in the main pipe lining material by the projection of the part mark jig.

According to the present invention, a projection having an opening having substantially the same shape as the branch pipe opening is provided on a part of the holding member made of an elastic member which is partially overlapped and rounded,
A jig for marking a branch pipe opening formed by projecting the protrusion on the inner surface or the inner and outer surfaces of the holding member is introduced into the main pipe, and the protrusion of the jig is positioned at the branch pipe opening to hold the jig. After holding the jig in the main pipe by expanding the air bag inserted into the elastic member constituting the member and expanding the elastic member, the uncured liquid curable resin is applied to the tubular resin adsorbent. The main pipe is lined using the main pipe lining material that is impregnated, and the main pipe lining material is projected along the branch pipe opening formed in the main pipe lining material by the projection of the branch pipe opening mark jig. The main pipe lining material is perforated.

According to a seventeenth aspect of the present invention, in the invention of the fifteenth or sixteenth aspect, the branch pipe opening mark marking jig is attached to an in-pipe work robot remotely controlled from the ground.
The in-pipe work robot is moved to position a branch pipe opening mark marking jig attached thereto.

According to an eighteenth aspect of the present invention, in the invention of the thirteenth or seventeenth aspect, the in-pipe work robot is driven by a fluid pressure or an electric motor.

The invention according to claim 19 is characterized in that the main pipe lining material is perforated by a cutter provided in a pipe working robot introduced into the main pipe.

According to a twentieth aspect, in the nineteenth aspect, the cutter includes a wire brush.

[0034] The invention described in claim 21 is the invention according to claims 12 to 1.
21. The invention according to 9 or 20, wherein the positioning of the jig for marking the branch pipe opening to the branch pipe opening and the perforation of the main pipe lining material are performed on the ground inside the main pipe by a TV camera introduced into the main pipe. It is characterized by performing while monitoring.

Accordingly, claims 1-4 and claims 6-11
2. The method according to claim 1, wherein the jig is used to mark a branch pipe opening.
According to the pipe lining method described in 2, 13, 15 to 21, the jig for marking the branch pipe opening is set in the main pipe, the projection is fitted into the branch pipe opening, and the jig is positioned. When the main pipe is lined using the main pipe lining, a mark having substantially the same shape as the branch pipe opening is protruded from the main pipe lining material by the projection of the jig for marking the branch pipe opening. The lining material can be accurately drilled. Further, since it is not necessary to increase the curing pressure as in the related art, there is no problem that the liquid curable resin impregnated in the main pipe lining oozes out and is hardened. Even if the cross-sectional shape of the branch pipe is a non-circular shape having a diameter different from the diameter of the branch pipe, the jig for the branch pipe opening mark is formed along a mark having substantially the same shape as the branch pipe opening formed in the main pipe lining material. The main pipe lining material can be accurately drilled.

In particular, in the jig for marking a branch pipe opening according to the ninth aspect, the projection is made of metal or a material containing metal so that the projection also functions as a drilling protection member. In the operation, the occurrence of a problem that the existing pipe is cut and damaged by the cutter is prevented.

In the jig for marking a branch pipe opening according to the eleventh aspect, the knife-edge-shaped edge of the projection serving as a plate thickness reducing member cuts into the outer peripheral surface of the main pipe lining material during pipe lining. In order to locally reduce the thickness of a predetermined portion (portion to be perforated) of the main pipe lining material, the portion can be broken by applying an external force to the portion, and the main pipe lining material is formed into a projection shape. Can be perforated accurately and easily.

According to the pipe lining method of claim 14, which is performed using the jig for marking a branch pipe opening according to claim 5, the jig for marking a branch pipe opening is fixed to the inner wall of the main pipe.
By lining the main pipe using the main lining material,
Since a mark having substantially the same shape as the branch pipe opening protrudes from the main pipe lining material by the protrusion of the branch pipe opening mark jig, the main pipe lining material can be accurately drilled along the mark. .

[0039]

BEST MODE FOR CARRYING OUT THE INVENTION

<First Embodiment> A first embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a front sectional view (a sectional view taken along line AA in FIG. 2) of a jig for marking a branch pipe opening according to the first embodiment of the present invention.
FIG. 2 is a side view of the jig for marking the branch pipe opening.

A jig for marking a branch pipe opening (hereinafter simply referred to as a jig) 1 according to the present invention is a notched cylindrical holding member that is fitted tightly to the inner peripheral surface of a main pipe 10 (see FIG. 6). A branch pipe opening (a part where the branch pipe 11 opens into the main pipe 10) 11
a (see FIG. 6), the projection 3 having an opening having substantially the same shape as that of the holding member 2 is formed.
Projecting from the inner and outer surfaces by a predetermined length.

The holding member 2 is made of elastic plastic, wood or metal, and the circumscribed circle diameter D1 of the holding member 2 before the jig 1 is introduced into the main pipe 10 at the time of lining described later is determined by the following equation. Is set to be larger than the inner diameter D (D1> D), and the width B of the holding member 2 is set to be larger than the outer diameter d1 of the cylindrical portion 3 (B> d1).
The circumferential length of the holding member 2 is set longer than the semicircular length of the inner surface of the main pipe 10. In the present embodiment, the projection 3 is formed separately from the holding member 2, but both may be formed integrally. The outer diameter d1 of the projection 3 is set to be slightly smaller (by the fitting margin) (d1 <d) than the diameter d of a branch pipe 11 (see FIG. 6) described later.

By the way, as shown in FIG. 3, the upper and lower end surfaces of the cylindrical portion 2 of the jig 1 may be formed into an arcuate curved surface, or the projection 3 may be formed only on the inner surface side of the holding member 2 as shown in FIG. May be projected.

Further, as shown in FIG. 5, the circumferential length of the holding member 2 of the jig 1 is set shorter than the semicircular length of the inner surface of the main pipe 10, and the outer circumferential surface of the holding member 2 is bonded. An agent may be impregnated or applied.

Next, a pipe lining method according to the present invention constructed using the jig 1 shown in FIGS. 1 and 2 will be described with reference to FIGS. 6 to 13 are sectional views showing the pipe lining method according to the present invention in the order of steps, FIG. 8 is a sectional view taken along line BB of FIG. 7, and FIG.
FIG. 4 is a sectional view taken along line C of FIG.

In FIG. 6, reference numeral 10 denotes a main pipe such as a sewer pipe;
Reference numeral 1 denotes a small-diameter branch pipe that joins the main pipe 10. In the pipe lining method according to the present invention, the jig 1 is connected to the main pipe 1.
After the main pipe 10 is introduced into the main pipe 10 and positioned so that the projection 3 fits into the branch pipe opening 11a, the main pipe 10 is lined using the main pipe lining material 12 (see FIG. 9). A hole is formed in the main pipe lining material 12 along a mark 12a (see FIGS. 10 and 11) having the same shape as the branch pipe opening 11a formed to project from the main pipe lining material 12 by the projection 3 of the tool 1.

That is, as shown in FIG. 6, an in-pipe working robot 13 is introduced into the main pipe 10, and the jig 1 is provided with a head 3 a at the front end of the in-pipe working robot 13, and the projection 3 is connected to the branch pipe 11. The holding member 2 is set in a reduced diameter state (a state in which the diameter of the holding member 2 is reduced to be smaller than the inner diameter D of the main pipe 10). The in-pipe working robot 13 is driven by hydraulic pressure, and its head 13a moves back and forth in the direction of arrow a and is rotatable in the direction of arrow b. Tow ropes 14 and 15 are connected to the head 13a. A TV camera 16 for monitoring is installed.

While the inside of the main pipe 10 is monitored on the ground by the TV camera 16 installed on the working robot 13, the pulling rope 14 or 15 is pulled to move the in-pipe working robot 13 inside the main pipe 10. The jig 1 is moved to position the projection 3 so that the projection 3 coincides with the position of the branch pipe opening 11a. Since the jig 1 is set in the in-pipe working robot 13 in a reduced diameter state as described above, the jig 1 and the in-pipe working robot 13 can move freely in the main pipe 10 without any resistance.

When the jig 1 is positioned as described above, the reduced diameter state of the jig 1 is released. Here, as described above, the holding member 2 of the jig 1 is made of an elastic material, and the circumscribed circle diameter D1 of the holding member 2 before the jig 1 is introduced into the main pipe 10 is determined by the main pipe 10 Is larger than the inner diameter D (D1> D) of the jig 1, the holding member 2 expands its diameter by elasticity as shown in FIGS. The jig 1 is tightly fitted to the inner peripheral surface of the pipe 10, and the jig 1 is held at a predetermined position in the main pipe 10. At this time, the projection 3 of the jig 1 is fitted into the branch pipe opening 11a to form a part thereof. Protrudes into the main pipe 10 as shown.

When the positioning of the jig 1 in the main pipe 10 is completed as described above, the main pipe 10 is lined.

That is, as shown in FIG. 9, the main pipe lining material 12 is reversely inserted into the main pipe 10 by fluid pressure such as air pressure, and the outer peripheral surface of the main pipe lining material 12 is airtight. An uncured liquid curable resin is impregnated in a tubular resin adsorbent 12c covered with a high plastic film 12b. The tubular resin adsorbent 12c
Is made of non-woven fabric such as polyester, polypropylene, acrylic, etc., and thermosetting resin such as unsaturated polyester resin, epoxy resin, vinyl ester resin is used as the uncured liquid curable resin impregnated in it. . The plastic film 12b is formed into a single-layer or multi-layer seamless tube by an inflation method, and the material is selected from polyurethane, polyethylene, nylon, ethylene vinyl alcohol, admer, ionomer, vinyl chloride, and the like.

As shown in FIG. 10, when the inverted insertion of the main pipe lining material 12 into the main pipe 10 is completed over the entire length of the main pipe 10, the fluid pressure is introduced into the main pipe lining material 12. (Curing pressure) to apply the main pipe lining material 1
While pressing the inner pipe 2 against the inner wall of the main pipe 10, the main pipe lining material 12 is heated by an arbitrary heating means to cure the thermosetting resin impregnated therein. Then, lining is applied to the inner peripheral surface of the main pipe 10 by the hardened main pipe lining material 12, and the main pipe 10 is repaired.
A mark 12 having the same shape as the branch pipe opening 11a is formed on the main pipe lining material 12 by the cylindrical portion 2 of the jig 1 protruding toward the main pipe 10.
a is formed to protrude.

When the inner peripheral surface of the main pipe 10 is lined with the main pipe lining material 12 as described above, the branch pipe opening 11a of the main pipe 10 is
As shown in FIG. 12, it is necessary to make a hole in the main pipe lining material 12 so as to close the branch pipe opening 11a so that the main pipe 10 communicates with the main pipe 10.

That is, as shown in FIG. 12, when the main pipe lining material 12 is pierced, the pipe working robot 13 is introduced into the main pipe 10.
A hydraulic cylinder 17 is attached to the third head 13a, and a hydraulic motor 18 is supported on a rod 17a of the hydraulic cylinder 17 that moves up and down in the direction of arrow c in the figure. The output shaft 18a of the hydraulic motor 18 has a cutter 1 having an outer diameter smaller than the diameter of the branch pipe opening 11a.
9 is attached, the cutter 19 is configured to include a wire brush, and a cutting blade is formed on the upper and lower surfaces and the outer peripheral surface thereof.
Is attached. In this embodiment, the in-pipe work robot 13 is driven by hydraulic pressure, but may be driven by an electric motor.

While the inside of the main pipe 10 is being monitored on the ground by the TV camera 16 installed on the in-pipe working robot 13, the pulling rope 14 or 15 is pulled to move the in-pipe working robot 13 within the main pipe 10. The cutter 19 is moved to position the cutter 19 at a predetermined position. Then, while driving the hydraulic motor 18 to rotate the cutter 19, the hydraulic cylinder 17 is driven to drive the hydraulic motor 18.
And the cutter 19 are moved upward, the portion of the main pipe lining material 12 that closes the branch pipe opening 11a is cut by the cutter 19. At this time, the main pipe lining 3 is protruded by the projection 3 of the jig 1 as described above. Branch pipe opening 11 in lining material 12
Since the mark 12a having the same shape as that of the mark 12a is formed so as to protrude, the mark 12a can be easily found.
The main pipe lining material 12 can be accurately drilled along a.

In the present embodiment, since it is not necessary to increase the curing pressure as in the prior art, the main pipe lining material 1
The liquid thermosetting resin impregnated in No. 2 does not seep into the branch pipe 11 and is hardened.
Further, even if the cross-sectional shape of the branch pipe opening 11a is a non-circular shape having a diameter different from the diameter of the branch pipe 11, the same shape as the branch pipe opening 11a protrudingly formed in the main pipe lining material 12 by the jig 1 is used. The main pipe lining material 12 can be accurately drilled along the mark 12a.

Further, since the periphery of the branch pipe opening 11a is covered and protected by the projection 3 of the jig 1, this part is not damaged by the cutter 19, and groundwater or the like is removed from the damaged part. Problems such as intrusion into the pipe 10 do not occur. In particular, if the projection 3 of the jig 1 is made of a metal such as stainless steel or a material containing a metal, the projection 3 functions as a piercing protection member and the branch pipe 11 by the cutter 19.
Can be reliably prevented.

When the portion of the main pipe lining material 12 that closes the branch pipe opening 11a is completely cut off by the cutter 19 as described above, the branch pipe 11 opens into the main pipe 10 as shown in FIG. The two are then brought into communication, where a series of pipe lining operations is completed.

The jig 1 shown in FIG.
Is smaller than the semicircular length of the inner surface of the main pipe 10, it is not sufficient to expand the diameter of the holding member 2 in the main pipe 10, but the holding force is not sufficient. Since the adhesive is impregnated or applied as described above, the jig 1 (holding member 2) is held on the inner peripheral surface of the main pipe 10 by the adhesive force of the adhesive, and its falling is prevented.

As shown in FIG. 14, the edge of a portion of the jig 1 projecting from the inner surface of the holding member 2 is formed into a sharp knife edge so that the projection 3 functions as a plate thickness reducing member. By doing so, as shown in FIGS. 15 and 16, the work of piercing the cured main pipe lining material 12 can be easily performed without using a cutting tool such as a cutter.

FIG. 15 and FIG. 16 are cross-sectional views showing a drilling operation of the main pipe lining material 12. As shown in FIG. Is completed over the entire length of the main pipe lining material 12, fluid pressure is applied to the inside of the main pipe lining material 12 to
2 is pressed against the inner peripheral wall of the main pipe 10. Then, the sharp leading edge of the projection 3 as the plate thickness reducing member of the jig 1 comes into contact with the outer peripheral surface of the main pipe lining material 12, and the distal edge of the projection 3 is brought into contact with the main pipe lining material 12 as shown in the figure. Of the main pipe lining material 12 to locally reduce the thickness of the main pipe lining material 12.

Then, the main pipe lining material 12 is
When the main pipe lining material 12 is heated by an arbitrary heating means to cure the thermosetting resin impregnated in the main pipe lining material 12 while being pressed against the inner peripheral wall of the main pipe lining material 12,
The inner peripheral surface of the main pipe 10 is lined and repaired, but the part where the plate thickness of the main pipe lining material 12 is locally reduced is hardened as it is, so that part is harder than other parts. And the strength is weak.

Therefore, as shown in FIG. 16, the high-pressure reverse injection nozzle 35 attached to the tip of the high-pressure hose 34 is inserted into the branch pipe 11 from the ground, and high-pressure water is supplied to the high-pressure hose 34. Is reversely injected from the rear end face of the high hydraulic pressure reverse injection nozzle 35, the high hydraulic pressure reverse injection nozzle 35 moves downward by the reaction force of the high-pressure water which is reversely injected, and moves downward by the branch pipe opening 11 a of the main pipe lining material 12. In order to apply an impact force to a portion (a portion surrounded by the projections 3) that blocks the main pipe, locally high stress is generated in a portion where the plate thickness of the main pipe lining material 12 is reduced, and this portion is broken and the main pipe lining is broken. The portion of the material 12 that closes the branch pipe opening 11a is punched out as shown in FIG. As a result, the branch pipe 11 is opened to the main pipe 10 so that the two can communicate with each other.

As described above, by making the projection 3 of the jig 1 also function as a plate thickness reducing member, the knife-edge-shaped edge of the projection 3 cuts into the outer peripheral surface of the main pipe lining material 12 and In order to locally reduce the thickness of a predetermined portion (portion to be perforated) of the main pipe lining material 12, the portion can be broken by applying an external force to the portion, and the main pipe lining material 12 can be protruded. It is possible to pierce accurately and easily along the shape of 3.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. Note that FIG.
FIG. 18 is a cross-sectional view of a jig for marking a branch pipe opening according to the second embodiment of the present invention, FIG. 18 is a perspective view of the jig for marking a branch pipe opening, and FIGS. It is a cross-sectional view which shows the pipe lining method constructed using a jig | tool in order of the process.

This embodiment is applied to a case where a person can enter the main line.

As shown in FIGS. 17 and 18, a branch pipe opening mark jig (hereinafter, simply referred to as a jig) 21 according to the present embodiment is a box culvert type main pipe 30 (FIG. 19).
(See Reference) A radially penetrating projection 23 having an opening having substantially the same shape as the branch pipe opening 31a is formed in a part of the flange 22 abutting on the peripheral edge of the branch pipe opening 31a on the inner wall. It protrudes from the inner and outer surfaces of the flange 22 by a predetermined length. Further, bolt holes 22 a for inserting the anchor bolts 25 are formed in the four corners of the flange 22.

The jig 21 is made of plastic or metal, and a part 22 A of the flange 22 is bent along the inner wall shape of the main pipe 30.

At the time of lining the main pipe 30, an operator enters the main pipe 30 and attaches the jig 21 to the peripheral edge of the branch pipe opening 31a on the inner wall of the main pipe 30 as shown in FIG. That is, the protrusion 23 of the jig 21 is positioned at the branch pipe opening 31a, and the flange 22 of the jig 21 is brought into contact with the peripheral edge of the branch pipe opening 31a on the inner wall of the main pipe 30, and is formed in the flange 22. The jig 21 is fixed to the inner wall of the main pipe 30 by the anchor bolt 25 inserted into the bolt hole 22a. 19 and 20, reference numeral 31 denotes a small-diameter branch pipe which joins the main pipe 30.

When the positioning and fixing of the jig 21 in the main pipe 30 are completed as described above, as shown in FIG. 20, the main pipe 30 is attached to the main pipe 30 using the main pipe lining material 32 as in the first embodiment. At this time, the projections 23 of the jig 21 projecting toward the main pipe 30 make the main pipe lining material 32 have a mark 3 having substantially the same shape as the branch pipe opening 31a.
2a is formed to protrude.

Therefore, also in the present embodiment, in the same manner as in the first embodiment, at the time of drilling a portion for closing the branch pipe opening 31a of the main pipe lining material 32, the main pipe lining material 32 is formed. The mark 32a can be easily found, and the main pipe lining material 32 can be accurately drilled along the mark 32a. In the present invention, an operator can enter the main pipe 30 and manually drill a hole in the main pipe lining material 32.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIGS.

FIG. 21 is a front cross-sectional view of a jig for marking a branch pipe opening according to the present embodiment, and FIG. 22 is a cross-sectional view showing a procedure for attaching the jig for marking a branch pipe opening to the main pipe. is there.

A branch pipe opening mark jig (hereinafter simply referred to as a jig) 41 shown in FIG. 21 has a branch pipe opening 51a at the center of a flange 42 formed of an arc-shaped curved surface with metal, plastic, or the like. A tubular resin adsorbing material 44 as a holding member formed by penetrating a cylindrical projection 43 having an opening having substantially the same shape as that of FIG. 22 and impregnating an uncured curable resin.
Is cut out, and the flange 41 is attached to that part.

Incidentally, the projection 43 may be protruded only on the inner surface side of the flange 41 (tubular resin adsorbent 44). Alternatively, the projection 43 may be made of a metal such as stainless steel and function as a perforation protection member. Alternatively, the edge of the projection 43 may be formed into a sharp knife-edge shape, and the projection 43 may be formed as a plate thickness reducing member. It may be made to function as.

At the time of pipe lining, the jig 41 is fixedly set at a predetermined position in the main pipe 50 as shown in FIG.

That is, when the jig 41 is supported by the in-pipe work robot (not shown) and is moved inside the main pipe 50, and the projection 43 is positioned and set so as to fit into the branch pipe opening 51a. The compressed air is supplied into the air bag 45 inserted into the tubular resin adsorbent 44 of the jig 41, so that the air bag 45 is inflated. Then, the tubular resin adsorbent 44 of the jig 41 becomes the air bag 45.
And is brought into close contact with the inner peripheral wall of the main pipe 50 as shown.

As described above, the tubular resin adsorbent 4 of the jig 41
When the curable resin impregnated in the tubular resin adsorbent 44 is cured by an arbitrary method while maintaining its state when the tubular resin 4 is pressed against and tightly attached to the inner peripheral wall of the main pipe 50, the cured tubular resin The jig 41 is fixed at a predetermined position in the main pipe 50 by the adsorbent 44.

Thus, as described above, the jig 41 is connected to the main pipe 50.
When the air bag 45 is fixedly set in the jig 41,
After that, the main pipe 50 is lined using a main pipe lining material (not shown) in the same manner as in the first embodiment, and the main pipe lining is formed by the projection 43 of the jig 41 protruding toward the main pipe 50. Since a mark having the same shape as that of the branch pipe opening 51a is formed in the material so as to protrude, a portion of the main pipe lining material that closes the branch pipe opening 51a can be accurately drilled along the mark.

<Fourth Embodiment> Next, a fourth embodiment of the present invention will be described with reference to FIGS.

FIG. 23 is a perspective view of a jig for marking a branch pipe opening according to Embodiment 4 of the present invention, FIG. 24 is a front sectional view of the jig for marking a branch pipe opening, and FIG. E part enlarged detailed view,
26 is an enlarged detailed view of a portion F in FIG. 24, FIG. 27 is a perspective view of a stopper, FIG. 28 is a side sectional view of an airbag attached to the in-pipe work robot, FIG. 29 is a perspective view of the airbag, FIG. FIG. 31 is a cross-sectional view showing a procedure for attaching the pipe opening mark jig to the main pipe.

A branch pipe opening mark jig (hereinafter, simply referred to as a jig) 61 shown in FIG. 23 is a branch pipe opening formed at the center of a holding collar 62 formed of a metal, plastic, or the like into an arcuate surface. A cylindrical projection 63 having an opening substantially the same as that of the holding collar 62a is provided.
A band-shaped elastic plate 64 as a holding member is attached to both ends in the length direction.

Each of the elastic plates 64 is made of a metal such as stainless steel,
It is made of an elastic material such as plastic, and a part of it is
0 (see FIG. 30). As shown in FIG. 25, one end of each elastic plate 64 is attached to the holding collar 62 by two screws 65, and a plurality of convex portions 64a are protrudingly provided at appropriate intervals on the inner peripheral portion at the other end. ing.

On the other hand, a channel-shaped stopper 66 is attached to the inner peripheral portion of the holding collar 62. The stopper 66 has a ratchet pawl 66a cut and raised as shown in FIGS. 26 and 27. I have.

As described above, each elastic plate 64 has its free end passed through the stopper 66 so that the
It is rounded to a diameter smaller than the inner diameter of 0. The ratchet pawl 66a of the stopper 66 engages with the convex portion 64a of the elastic plate 64, as shown in FIG. 26, to allow the elastic plate 64 to move in the radially increasing direction (the direction of arrow a in the drawing), The movement in the direction indicated by arrow b) is prevented.

Incidentally, the projection 63 may be projected only on the inner surface side of the holding collar 62. Alternatively, the projection 63 may be made of a metal such as stainless steel and function as a perforation protection member. Alternatively, the edge of the projection 63 may be formed into a sharp knife edge to form the projection 63 into a plate thickness reducing member. It may be made to function as.

By the way, the jig 6 configured as described above
1 is set on a setting collar 67 shown in FIGS. 28 and 29 and is moved in the main pipe 70 by the in-pipe working robot 13 shown in FIG. 28. The setting collar 67 is supported by the connecting arm 13a of the in-pipe working robot 13. Have been.

A cylindrical guide projection 67 a is provided upright at the center of the setting collar 67, and an air bag 68 is attached to a lower portion of the setting collar 67. The other end of an air hose 69, one end of which is connected to a compressor (not shown), is connected to the air bag 68. In the in-pipe work robot 13 shown in FIG. 28, 17 is a hydraulic cylinder, 16 is a TV camera, and 20 is a light.

As shown in FIG. 30, the jig 61 has projections 63 of the guide collar 6 of the setting collar 67.
The air bag 68 is inserted into the elastic plate 64 of the jig 61 in a contracted state at this time while being set on the setting collar 67 in a state of fitting into the inside 7a.

The jig 61 set on the setting collar 67 as described above is moved to a predetermined position in the main pipe 70 by the in-pipe working robot 13 shown in FIG. 28, and the projection 43 of the jig 61 is moved to the branch pipe opening 71a. When it is positioned and set to fit, the elastic plate 6 of the jig 61 is set.
Compressed air is supplied from an air hose 69 into an air bag 68 inserted into the inside of the air bag 4, and the air bag 68 is inflated as shown in FIG. Then, the elastic plate 64 of the jig 61 is pushed and spread by the air bag 68 and is brought into close contact with the inner peripheral wall of the main pipe 70 as shown. At this time, since the elastic plate 64 is prevented from being deformed in the diameter-reducing direction by the stopper 66 as described above, the state in which the elastic plate 64 is in close contact with the inner peripheral wall of the main pipe 70 is maintained.
It is fixedly set at a predetermined position within 0.

Thus, the jig 61 is connected to the main pipe 70 as described above.
When it is fixedly set in the main body, the setting collar 67 and the air bag 68 attached thereto are removed from the jig 61, and thereafter, the main pipe is formed using a main pipe lining material (not shown) as in the first embodiment. The lining 70 is formed, and a mark having the same shape as the branch pipe opening 71a is formed on the main pipe lining material by the projection 63 of the jig 61 protruding toward the main pipe 70, so that the branch pipe opening of the main pipe lining material is formed. Part 71
A portion that closes a can be accurately drilled along the mark.

<Fifth Embodiment> Next, a fifth embodiment of the present invention will be described with reference to FIGS.

FIG. 32 is a front cross-sectional view of a jig for marking a branch pipe opening according to the present embodiment, and FIG. 33 is a cross-sectional view showing how to attach the jig for marking a branch pipe opening to the main pipe. is there.

A branch pipe opening mark jig (hereinafter, simply referred to as a jig) 81 shown in FIG. 32 includes a branch pipe opening 91 formed on a part of an elastic plate 82 formed of an elastic material such as metal or plastic.
a (see FIG. 33), and has a cylindrical projection 83 having an opening substantially in the same shape as that of FIG. Here, the elastic plate 82
Are rounded so as to partially overlap each other and smaller than the inner diameter of the main pipe 90 (see FIG. 33).

A plurality of ratchet claws 82a are protruded from an outer peripheral portion of one end of the elastic plate 82, and the elastic plate 82
Are formed with a plurality of engagement grooves 82b at the other end.

Incidentally, the projection 83 may be projected only on the inner surface side of the elastic plate 82. Further, the projection 83 may be made of a metal such as stainless steel and function as a perforation protection member. Alternatively, the edge of the projection 83 may be formed into a sharp knife edge so that the projection 83 is formed as a plate thickness reducing member. It may be made to function as.

The jig 81 is fixedly set at a predetermined position in the main pipe 90 in the manner shown in FIG.

That is, when the jig 81 is supported by the in-pipe work robot (not shown) and is moved in the main pipe 90, and the projection 83 is positioned and set so as to fit into the branch pipe opening 91a. The compressed air is supplied into the air bag 85 inserted into the elastic plate of the jig 81, so that the air bag 85 is inflated. Then, the jig 81
The elastic plate is pushed and spread by the air bag 85 and is brought into close contact with the inner peripheral wall of the main pipe 90 as shown in the figure. At this time,
The elastic plate 82 is prevented from deforming in the radially-reduced direction by the engagement of a ratchet claw 82a protruding at one end of the outer peripheral portion thereof with an engaging groove 82b formed at the other end thereof.
Is kept in close contact with the inner peripheral wall of the
Is fixedly set at a predetermined position in the main pipe 90.

Thus, as described above, the jig 81 is
When the air bag 85 is fixedly set inside the jig 81
After that, the main pipe 90 is lined using a main pipe lining material (not shown) in the same manner as in the first embodiment, and the main pipe lining is formed by a projection 83 of a jig 81 protruding to the main pipe 90 side. Since a mark having the same shape as that of the branch pipe opening 91a is formed in the material so as to protrude, a portion of the main pipe lining material that closes the branch pipe opening 91a can be accurately drilled along the mark.

[0100]

As is apparent from the above description, claim 1
According to the pipe lining method according to any one of claims 12, 13, and 15-21, the jig is used for marking the branch pipe opening. After the main pipe is set in the main pipe, the protrusion is fitted into the branch pipe opening and positioned, then the main pipe is lined using the main pipe lining material. Since the mark having substantially the same shape as that of the branch pipe opening is formed on the material, the main pipe lining material can be accurately drilled along the mark. Further, since it is not necessary to increase the curing pressure as in the related art, there is no problem that the liquid curable resin impregnated in the main pipe lining oozes out and is hardened. Even if the cross-sectional shape of the branch pipe is a non-circular shape having a diameter different from the diameter of the branch pipe, the jig for the branch pipe opening mark is formed along a mark having substantially the same shape as the branch pipe opening formed in the main pipe lining material. The effect that the main pipe lining material can be accurately drilled can be obtained.

Particularly, in the jig for marking a branch pipe opening according to the ninth aspect, the projection is made of a metal or a material containing a metal so that the projection also functions as a drilling protection member. In the operation, the occurrence of a problem that the existing pipe is cut and damaged by the cutter is prevented.

In the jig for marking a branch pipe opening according to the eleventh aspect, the knife-edge-shaped edge of the projection serving as a plate thickness reducing member cuts into the outer peripheral surface of the main pipe lining material during pipe lining. In order to locally reduce the thickness of a predetermined portion (portion to be perforated) of the main pipe lining material, the portion can be broken by applying an external force to the portion, and the main pipe lining material is formed into a projection shape. Can be perforated accurately and easily.

According to the pipe lining method of claim 14, which is performed using the jig for marking a branch pipe opening according to claim 5, after the jig for marking a branch pipe opening is fixed to the inner wall of the main pipe,
By lining the main pipe using the main lining material,
Since a mark having substantially the same shape as the branch pipe opening protrudes from the main pipe lining material by the protrusion of the branch pipe opening mark jig, the main pipe lining material can be accurately drilled along the mark. The effect is obtained.

[Brief description of the drawings]

FIG. 1 is a front cross-sectional view (a cross-sectional view taken along line AA in FIG. 2) of a jig for marking a branch pipe opening according to Embodiment 1 of the present invention.

FIG. 2 is a side view of the jig for marking a branch pipe opening according to the first embodiment of the present invention.

FIG. 3 is a front sectional view of a jig for marking a branch pipe opening according to another embodiment of the first embodiment of the present invention.

FIG. 4 is a front sectional view of a branch pipe opening mark marking jig according to another embodiment of the first embodiment of the present invention.

FIG. 5 is a front sectional view of a jig for marking a branch pipe opening according to another embodiment of the first embodiment of the present invention.

FIG. 6 is a sectional view showing a pipe lining method according to Embodiment 1 of the present invention.

FIG. 7 is a sectional view showing the pipe lining method according to the first embodiment of the present invention.

FIG. 8 is a sectional view taken along line BB of FIG. 7;

FIG. 9 is a sectional view showing the pipe lining method according to the first embodiment of the present invention.

FIG. 10 is a sectional view showing a pipe lining method according to the first embodiment of the present invention.

FIG. 11 is a sectional view taken along line CC of FIG. 10;

FIG. 12 is a sectional view showing a pipe lining method according to Embodiment 1 of the present invention.

FIG. 13 is a sectional view showing a pipe lining method according to the first embodiment of the present invention.

FIG. 14 is a front sectional view of a branch pipe opening mark marking jig according to another embodiment of the first embodiment of the present invention.

FIG. 15 is a cross-sectional view showing another embodiment of the boring operation of the main pipe lining material.

FIG. 16 is a cross-sectional view showing another embodiment of a boring operation of a main pipe lining material.

FIG. 17 is a sectional view of a jig for marking a branch pipe opening according to the second embodiment of the present invention.

FIG. 18 is a perspective view of a jig for marking a branch pipe opening according to a second embodiment of the present invention.

FIG. 19 is a cross-sectional view showing a pipe lining method according to Embodiment 2 of the present invention.

FIG. 20 is a cross-sectional view showing a pipe lining method according to Embodiment 2 of the present invention.

FIG. 21 is a front sectional view of a jig for marking a branch pipe opening according to a third embodiment of the present invention.

FIG. 22 is a cross-sectional view showing a procedure for attaching a jig for marking a branch pipe opening to a main pipe according to Embodiment 3 of the present invention.

FIG. 23 is a perspective view of a branch pipe opening mark marking jig according to Embodiment 4 of the present invention.

FIG. 24 is a front sectional view of a jig for marking a branch pipe opening according to a fourth embodiment of the present invention.

FIG. 25 is an enlarged detail view of a portion E in FIG. 24;

FIG. 26 is an enlarged detail view of a portion F in FIG. 24;

FIG. 27 is a perspective view of a stopper of a jig for marking a branch pipe opening according to Embodiment 4 of the present invention.

FIG. 28 is a side sectional view of the airbag attached to the in-pipe work robot.

FIG. 29 is a perspective view of an airbag attached to the in-pipe work robot.

FIG. 30 is a cross-sectional view showing a procedure for attaching a jig for marking a branch pipe opening to a main pipe according to Embodiment 4 of the present invention.

FIG. 31 is a cross-sectional view showing how to attach a jig for marking a branch pipe opening to a main pipe according to Embodiment 4 of the present invention.

FIG. 32 is a front sectional view of a jig for marking a branch pipe opening according to a fifth embodiment of the present invention.

FIG. 33 is a cross-sectional view showing a procedure for attaching a jig for marking a branch pipe opening to a main pipe according to Embodiment 5 of the present invention.

FIG. 34 is a cross-sectional view showing a perforation operation of a main pipe lining material by a conventional cutter.

[Explanation of symbols]

 1, 21, 41, 61, 81 Jig for marking a branch pipe opening 2 Holding member 3, 23, 43, 63, 83 Projection 10, 30, 50, 70, 90 Main pipe 11, 31, 51, 71, 91 Branch pipe 11a, 31a, 51a, 71a, 91a Branch pipe opening 12, 32 Main pipe lining material 12a, 32a Mark 12b Plastic film 12c Tubular resin adsorbent 13 In-tube working robot 16 TV camera 19 Cutter 22 Flange 25 Anchor bolt 44 Tubular Resin adsorbent 45, 68, 85 Airbag 64, 82 Elastic plate (elastic member) 66 Stopper (stopper means) 82a Ratchet claw (stopper means) 82b Engagement groove (stopper means)

Continued on the front page (72) Inventor Yasuhiro Yokoshima 175-3, Shinoyama, Ishishita-cho, Yuki-gun, Ibaraki Pref.

Claims (21)

[Claims] 1. A notch cylindrical holding member that fits closely to the inner peripheral surface of a main pipe is provided with a projection having an opening substantially the same shape as the branch pipe opening, and the projection is attached to the holding member. A jig for marking a branch pipe opening, wherein the jig is configured to protrude from an inner surface or an inner or outer surface. 2. The method according to claim 1, wherein the holding member is made of elastic plastic, wood or metal, and a circumscribed circle diameter before being introduced into the main pipe is set to be larger than an inner diameter of the main pipe. The jig for marking a branch pipe opening according to claim 1. 3. The jig according to claim 1, wherein the length of the holding member in the circumferential direction is set to be longer than the semicircular length of the inner surface of the main pipe. 4. The holding member has a circumferential length shorter than a semicircular length of the inner surface of the main pipe, and an adhesive is impregnated or applied to an outer surface of the holding member. The jig for marking a branch pipe opening according to claim 1 or 2. 5. A projection having an opening having substantially the same shape as the branch pipe opening is provided on a part of a flange abutting on a peripheral edge of the branch pipe opening on the inner wall of the main pipe, and the projection is provided on the inner surface or the inner and outer surfaces of the holding member. A jig for marking a branch pipe opening, wherein the jig is formed so as to protrude from the branch pipe. 6. A holding member made of a tubular resin adsorbent impregnated with an uncured curable resin is provided with a projection having an opening having substantially the same shape as the branch pipe opening, and the projection is attached to the holding member. A jig for marking a branch pipe opening, wherein the jig is configured to protrude from an inner surface or an inner or outer surface. 7. A projection having an opening substantially in the same shape as a branch pipe opening is provided on a part of a holding member made of an elastic member which is partially overlapped and rounded, and the projection is attached to an inner surface of the holding member. Alternatively, a jig for marking a branch pipe opening, wherein the jig is configured to protrude from the inner and outer surfaces. 8. The jig for marking a branch pipe opening according to claim 7, wherein said holding member is provided with stopper means for preventing deformation of said holding member in the radial direction. 9. The lateral pipe opening mark according to claim 1, wherein the projection is made of metal or a material containing metal, and the projection also functions as a perforation protection member. Jig. 10. The jig for marking a branch pipe opening according to claim 9, wherein the metal is made of stainless steel. 11. The projection according to claim 1, wherein an edge of a portion of said projection protruding from the inner surface of said holding member is shaped like a knife edge so that said projection also functions as a plate thickness reducing member. 11. The jig for marking a branch pipe opening portion according to any one of items 9 to 10. 12. A notch cylindrical holding member that fits closely to the inner peripheral surface of the main pipe is provided with a projection having an opening substantially the same shape as the branch pipe opening, and the projection is attached to the holding member. A jig for marking a branch pipe opening projecting from the inner surface or the inner and outer surfaces is introduced into the main pipe, the projection of the jig is positioned at the branch pipe opening, and the holding member is moved to the inner circumference of the main pipe. After the jig is tightly fitted to the surface and the jig is held in the main pipe, the main pipe is lined using a main pipe lining material obtained by impregnating an uncured liquid curable resin into a tubular resin adsorbent, and A pipe lining method characterized by forming a hole in a main pipe lining material along a mark having substantially the same shape as a branch pipe opening formed in a main pipe lining material by a protrusion of a branch pipe opening mark jig. 13. The branch pipe opening mark marking jig is set to the in-pipe work robot in a reduced diameter state, and when the protrusion is positioned in the branch pipe opening by the in-pipe work robot introduced into the main pipe, the diameter is reduced. The pipe lining method according to claim 12, wherein the pipe is fixed at a predetermined position in the main pipe by releasing the state. 14. A projection having an opening having substantially the same shape as the branch pipe opening is provided on a part of the flange abutting on the peripheral edge of the branch pipe opening on the inner wall of the main pipe, and the projection is formed on the inner surface or the inner or outer surface of the holding member. The protrusion of the branch pipe opening mark jig configured to project to the branch pipe opening is positioned, and the flange of the jig is brought into contact with the peripheral edge of the branch pipe opening on the inner wall of the main pipe, thereby After fixing the jig to the inner wall of the main pipe by the inserted anchor bolts, lining the main pipe using a main pipe lining material obtained by impregnating the uncured liquid curable resin into the tubular resin adsorbent, A pipe lining method comprising: forming a hole in a main pipe lining material along a mark having substantially the same shape as a branch pipe opening formed in a main pipe lining material by a protrusion of a branch pipe opening mark jig. 15. A projection having an opening having substantially the same shape as a branch pipe opening is provided on a part of a holding member made of a tubular resin adsorbent impregnated with an uncured curable resin. A jig for marking a branch pipe opening formed by protruding from the inner surface or the inner and outer surfaces is introduced into the main pipe, and the protrusion of the jig is positioned at the branch pipe opening to form the tubular resin suction forming the holding member. The air bag inserted into the inside of the material is inflated so that the tubular resin adsorbent is in close contact with the inner peripheral surface of the main pipe, and the curable resin impregnated in the tubular resin adsorbent is cured to fix the jig. After holding the main pipe in the main pipe, the main pipe is lined using a main pipe lining material obtained by impregnating an uncured liquid curable resin into a tubular resin adsorbent, and the protrusion of the branch pipe opening mark marker is provided. Of the same shape as the branch pipe opening formed in the main pipe lining material A pipe lining method characterized by perforating a main pipe lining material along a mark. 16. A holding member comprising an elastic member which is partially overlapped and rounded, is provided with a projection having an opening having substantially the same shape as the branch pipe opening, and the projection is provided on the inner surface of the holding member. Alternatively, a jig for marking a branch pipe opening formed by protruding from the inner and outer surfaces is introduced into the main pipe, and the protrusion of the jig is positioned at the opening of the branch pipe so that the inside of the elastic member constituting the holding member is formed. A main pipe lining material formed by inflating an air bag inserted into the main pipe to expand the elastic member to hold the jig in the main pipe, and then impregnating a tubular resin adsorbent with an uncured liquid curable resin. The main pipe is lined using a jig, and a hole is formed in the main pipe lining material along a mark having substantially the same shape as the branch pipe opening formed in the main pipe lining material by the protrusion of the branch pipe opening mark marking jig. Pipe lining method characterized by . 17. The branch pipe opening mark jig is attached to a pipe working robot remotely operated from the ground, and the pipe working robot is moved to position the branch pipe opening mark jig attached thereto. 2. The method according to claim 1, wherein
17. The pipe lining method according to 5 or 16. 18. The in-pipe work robot is driven by a fluid pressure or an electric motor.
18. The pipe lining method according to 3 or 17. 19. The pipe lining method according to claim 12, wherein the perforation of the main pipe lining material is performed by a cutter provided in an in-pipe working robot introduced into the main pipe. 20. The pipe lining method according to claim 19, wherein the cutter includes a wire brush. 21. Positioning of the jig for marking a branch pipe opening to the branch pipe opening and drilling of a hole in the main pipe lining material are performed.
The monitoring is performed while monitoring the inside of the main pipe on the ground with a TV camera introduced into the main pipe.
21. The pipe lining method according to 19 or 20.