JP2003083471A - Water cut-off method for fitting pipe opening - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water cut-off method for a fitting pipe opening allowing full and close contact of a flange and a main pipe, and being excellent in construction property when forming the flange by expanding a protrusion of a reproduced pipe protruded from a fitting pipe into the main pipe. SOLUTION: In this method, a sheet type cut-off member 4 made of synthetic rubber adhesive compound as a main material is adhered to periphery of the fitting pipe opening 12 of the main pipe 1, and an opening 45 corresponding to the fitting pipe opening 12 is formed on the cut-off member 4. Thereby, the brim-type flange formed on tip of the reproduced pipe is closely contacted on inner surface of the main pipe 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rehabilitation work for lining the inner surface of a mounting pipe connected to a buried main pipe in the ground with a rehabilitation pipe made of a thermoplastic resin, and particularly to projecting from the inside of the mounting pipe into the main pipe. A flange-like flange is formed at the end of the rehabilitation pipe to connect the main pipe with the mounting pipe (mounting pipe port).
To stop the water.

[0002]

2. Description of the Related Art Many pipelines for sewage are buried in the ground. This pipe line is generally a main pipe communicating between manholes and a plurality of mounting pipes (branch pipes) connected to the main pipe.
It consists of The mounting pipe is usually provided so as to pass through a basin provided near the surface of the earth and the main pipe, but unlike the main pipe and the manhole, it has a small pipe diameter and is simply configured. For this reason, damage and cracks often occur on the inner surface of the mounting pipe due to its aging. In addition, the connection between the main pipe and the mounting pipe, which were firmly attached at the beginning of construction, may become loose due to the influence of ground movement. If underground water such as rainwater or spring water flows in from the connection point,
The amount of water in the main pipe may exceed the allowable amount of water.

As for the mounting pipe which has deteriorated in this way,
Conventionally, the inner surface of the mounting pipe has been lined with a rehabilitation pipe made of resin to reinforce the pipeline. The applicant of the present invention also discloses a method for lining a rehabilitation pipe with respect to a mounting pipe as shown in FIG.
~ A technology as shown in Fig. 17 has been developed and a patent application has been filed prior to the present application. The outline will be described below.

This lining method includes at least a rehabilitating pipe insertion step, a rehabilitating tube diameter expanding step, and a rehabilitating tube tip portion treating step. However, in the illustrated example, prior to the process of inserting the rehabilitating pipe, the inner surface of the main pipe 1 has the same rehabilitating pipe 3
(3A) is preliminarily lined, and a substantially circular opening 30 corresponding to the inner diameter of the mounting pipe 2 is formed at the connection portion (mounting pipe port 12) of the rehabilitation pipe 3 (3A) with the mounting pipe 2. ing. In the description of this section, the main rehabilitation pipe 3 (3A) will be described as being integrated with the main pipe 1.

<Rehabilitation pipe insertion step> FIG.
An example is shown. The rehabilitation pipe 3 is made of a thermoplastic resin such as polyvinyl chloride or high-density polyethylene, and has a fold-shaped portion 31 extending along the axial direction formed on the outer surface of the rehabilitation pipe 3 and is radially contracted. The rehabilitation pipe 3 has a property of recovering the shape into a cylindrical body by being heated and pressurized to a predetermined shape memory temperature (for example, 80 ° C.). The tip portion of the rehabilitation pipe 3 is closed by a drawing plug 32 so as to be narrowed, and a wire 33 is connected to the drawing plug 32.
When inserting the rehabilitation pipe 3 into the mounting pipe 2, as shown in FIG. 10, a winder 82 installed near the ground surface on the side of the box 81.
While the rehabilitation pipe 3 (3B) is fed into the attachment pipe 2, the wire 33 connected to the pull-in plug 32 is pulled by the winch 84 through the main pipe 1 and the manhole 83. Reference numerals 85 and 86 are pulleys that change the path of the wire 33 and are installed on the inner bottom surface of the main pipe 1.

<Diameter expansion process of rehabilitating pipe> By the insertion work of the rehabilitating pipe 3, as shown in FIG. 11, the tip of the rehabilitating pipe 3 (3B) with the lead-in plug 32 reaches the inside of the main pipe 1. Subsequently, as shown in FIG. 12, steam gas is blown into the rehabilitation pipe 3 (3B) to thermally expand the rehabilitation pipe 3 (3B).
At the time of heat expansion, as shown in FIG. 13, the rehabilitation pipe 3
The feeding end of (3B) is cut, and the socket 87 is provided in the cut portion in an airtight state. An air supply hose 89 and an exhaust hose 90 from a steam generating heater 88 installed on the ground are connected to the socket 87. And the air supply hose 89
When high temperature and high pressure steam is blown from the rehabilitation pipe 3 (3
B) expands due to the pressure of the water vapor, and FIG.
As shown in (c), the fold-shaped portion 31 is reduced in diameter while being expanded, and is brought into close contact with the inner surface of the mounting tube 2 as shown in FIG.
The exhaust hose 89 is for discharging excess water vapor out of the pipe.

<Process of Treating Rehabilitation Pipe Tip> Next, as shown in FIG. 15, the rehabilitation pipe 3 (3) protruding into the main pipe 1
The tip end of B) is cut by the cutting machine 91 carried into the main pipe 1, and the cut end of the rehabilitation pipe 3 (3B) is opened in the main pipe 1. At this time, connect the cut end of the rehabilitation pipe 3 (3B) to the main pipe 1
The protrusion 34 of the rehabilitation pipe 3 (3B) is left inside the main pipe 1 by slightly projecting it inside. Then, as shown in FIG. 16, the cut end of the projecting portion 34 is expanded from below by a heat molding device 92 carried into the main pipe 1 to form a flange 35 having a flange shape as shown in FIG. Since the flange 35 thus formed covers the periphery of the attachment pipe port 12 along the inner surface of the main pipe 1, good water stopping performance can be obtained even at the connection portion between the main pipe 1 and the attachment pipe 2.

[0008]

According to the above-mentioned conventional lining method, the rehabilitation pipe 3 (3B) inserted in the mounting pipe 2 is used.
The inner surface of the mounting pipe 2 can be rehabilitated quickly and economically by heating and pressurizing to expand and expand the diameter in the mounting pipe 2.

However, in the step of treating the tip portion of the rehabilitating pipe, when the protrusion 34 of the mounting pipe-side rehabilitating pipe 3 (3B) that is projected into the main pipe 1 is expanded to form the flange 35, 1 (or the main-side rehabilitating pipe 3A) or the operating accuracy of the thermoforming device 92, etc., prevents sufficient adhesion between the flange 35 and the main pipe 1 (or the main-side rehabilitating pipe 3A). There are cases. Therefore, in the present invention, when the protrusion 35 of the rehabilitation pipe 3 (3B) that is projected from the mounting pipe 2 into the main pipe 1 is expanded to form the flange 35, the flange 35 and the main pipe 1 (or the main pipe side rehabilitation). It is an object of the present invention to provide a method for stopping water at a mounting pipe port, which is capable of closely adhering to the pipe 3A) and has excellent workability.

[0010]

In order to solve the above-mentioned problems, a method of stopping water at an attachment pipe mouth according to claim 1 of the present invention is
A step of adhering a sheet-shaped water stopping member mainly made of a synthetic rubber-based adhesive material around the mounting tube opening in the main pipe, and a step of forming an opening corresponding to the mounting tube opening in the water blocking member When,
Inserting a rehabilitation pipe made of thermoplastic resin into the mounting pipe from the side of the masu, and inserting the closed tip of the rehabilitation pipe into the opening of the water blocking member to reach the inside of the main pipe. From the side, heat and pressurize to expand the diameter until it comes into close contact with the inner surface of the mounting pipe, and remove the tip of the rehabilitating pipe leaving a cylindrical protrusion protruding into the main pipe near the tip of the expanded rehabilitating pipe. And a step of forming a flange-like flange at the tip of the rehabilitating pipe by shaping the protrusion so as to extend along the inner surface of the main pipe while heating and pushing the protrusion from the main pipe side, The present invention is characterized in that the flange is brought into close contact with the main pipe via a water member to stop water around the mounting pipe port.

Further, according to a second aspect of the present invention, there is provided a sheet-shaped water-stop member having a synthetic rubber adhesive as a main material, which is provided around a mounting pipe opening in a main pipe. There is a step of attaching a water blocking member in which an opening corresponding to the mounting pipe opening is formed in the approximate center in advance, and a rehabilitation pipe made of thermoplastic resin is inserted into the mounting pipe from the side of the masu, A step of inserting the closed distal end into the opening of the water blocking member to reach the inside of the main pipe, and a step of heating and pressurizing the rehabilitating pipe from the side of the masu until the inner diameter of the mounting pipe is increased. A step of cutting off the tip part of the rehabilitating pipe leaving a cylindrical projecting part projecting into the main part in the vicinity of the tip of the expanded rehabilitating pipe, and expanding the main part while heating the projecting part from the main part side A flange-shaped flange is formed on the tip of the rehabilitating pipe by shaping it along the inner surface of the Wherein the water-stop method for stopping water mounting tube opening, characterized in that the water stop around the attachment tube opening by members through adhering the flange to the main pipe.

According to these inventions, a flange-like flange is formed at the tip of the rehabilitation pipe to be inserted into the mounting pipe, and this flange is in close contact with the inner surface of the main pipe via an adhesive water-blocking member. As a result, the area around the attachment pipe is completely stopped.

When not only the mounting pipe but also the inner surface of the main pipe is lined and rehabilitated, the method of stopping water at the mounting pipe port of the present invention is
It is configured as in claim 3 or 4.

That is, according to the third aspect of the present invention, there is provided an inner surface of a main pipe by inserting a rehabilitation pipe made of a thermoplastic resin into the main pipe and heating and pressurizing the rehabilitation pipe in the main pipe. Lining the main pipe by expanding the diameter until it comes into close contact with the main pipe, and attaching a sheet-shaped water stop member mainly made of a synthetic rubber adhesive material around the mounting pipe opening in the rehabilitation pipe lining the main pipe. A step of attaching the rehabilitating pipe for lining the main pipe and a step of forming an opening corresponding to the mounting pipe port in the water blocking member, and inserting a rehabilitating pipe made of a thermoplastic resin into the mounting pipe from the side of the masu, and rehabilitating Inserting the closed tip of the pipe into the main pipe by inserting it through the openings formed in the main-side rehabilitation pipe and the water blocking member, and heating and applying the rehabilitation pipe inserted into the mounting pipe from the side of the pipe. Expand until the inner surface of the mounting pipe is pressed And a step of cutting off the tip of the rehabilitating pipe on the mounting pipe side leaving a cylindrical protrusion protruding into the main pipe in the vicinity of the tip of the enlarged rehabilitating pipe on the mounting pipe side. It is provided with a step of forming a flange-like flange at the tip of the mounting pipe side rehabilitating pipe by shaping it so as to extend along the inner surface of the main pipe rehabilitating pipe while heating from It is characterized in that the flange is brought into close contact with the main side rehabilitation pipe to stop the water around the mounting pipe port.

According to a fourth aspect of the present invention, there is provided a method for stopping water at an attachment pipe opening, wherein a rehabilitation pipe made of a thermoplastic resin is inserted into the main pipe,
A step of lining the main pipe by heating and pressurizing the rehabilitating pipe in the main pipe until the inner surface of the main pipe is intimately contacted, and an opening corresponding to a mounting pipe port for the rehabilitating pipe lining the main pipe. And a sheet-shaped water stop member mainly made of a synthetic rubber-based adhesive material around the attachment pipe opening in the rehabilitating pipe for lining the main pipe, and the attachment pipe opening is provided in the approximate center in advance. A step of adhering a water blocking member having an opening corresponding thereto, and a rehabilitation pipe made of a thermoplastic resin is inserted into the mounting pipe from the side of the box, and the closed tip of the rehabilitation pipe is connected to the main pipe. Inserting the side rehabilitation pipe and the opening formed in the water blocking member to reach the inside of the main pipe, and heating and pressurizing the rehabilitation pipe inserted into the mounting pipe from the masu side until the inner diameter of the mounting pipe is increased. And the vicinity of the tip of the enlarged rehabilitation pipe on the mounting pipe side A step of cutting off the tip portion of the mounting pipe side rehabilitation pipe leaving a cylindrical projecting portion protruding into the main pipe, and pushing and expanding the protruding portion while heating from the main pipe side along the inner surface of the main pipe rehabilitation pipe By forming a flange-shaped flange at the tip of the mounting pipe side rehabilitation pipe by shaping as described above, and by attaching the flange to the main pipe side rehabilitation pipe through the water blocking member, It is characterized by stopping the surrounding water.

In these inventions as well, a flange-shaped flange is formed at the tip of the rehabilitating pipe on the mounting pipe side, and the flange is brought into close contact with the inner surface of the rehabilitating pipe on the main pipe side by means of a water blocking member to attach the port to the mounting pipe. The water around the is completely stopped. However, the invention according to claim 3 and the invention according to claim 4 are different in the procedure of forming an opening corresponding to the mounting pipe port in the water blocking member.

According to the third aspect of the present invention, after the water stop member is attached to the inner surface of the main pipe-side rehabilitation pipe, the water stop member and the main pipe-side rehabilitation pipe are penetrated to communicate with the mounting pipe port. An opening is formed. In this procedure, since the positioning accuracy of the water blocking member is not required so much when the water blocking member is bonded to the main-side rehabilitation pipe, the work of bonding the water blocking member is easy.

On the other hand, in the invention according to claim 4, after forming an opening corresponding to the attachment pipe port in the main-side rehabilitation pipe, a water-stop member having a similar opening previously formed in the main-side rehabilitation pipe. Stick it. In this procedure, when attaching the water blocking member to the main-side rehabilitating pipe, it is necessary to align the opening of the water blocking member with the opening of the main-side rehabilitating pipe. Precision is required. However, since it is possible to prevent the chips of the rehabilitating pipe generated when forming an opening in the main rehabilitating pipe from adhering to the adhesive water blocking member, the flange was adhered to the main rehabilitating pipe. Adhesion becomes better.

As the water blocking member in the present invention,
Stretchable cloth-like body, net-like body or porous thin plate as a core material, and a main material made of a synthetic rubber adhesive material is attached to one or both sides of the core material in a substantially uniform thickness. Is preferred. The stretchable cloth or net is, for example, a net, a woven cloth, a non-woven fabric, or a web made of synthetic fibers, and the stretchable porous thin plate is, for example, a synthetic resin perforated sheet. Or film. Further, as the synthetic rubber-based pressure-sensitive adhesive, those having excellent corrosion resistance, spreadability, adhesiveness and the like are preferable, and for example, butyl rubber, polyisobutylene,
It is preferable to use synthetic rubber such as styrene / butadiene rubber, polychloroprene (neoprene) rubber, and nitrile rubber in a highly viscous solution. When these synthetic rubbers are made into a solution, their shape-retaining power decreases, and the synthetic rubbers hang down or sag under its own weight. Therefore, in order to maintain the flat shape, a synthetic rubber is attached to a cloth-like body or a thin plate body which is a core material for use. By imparting appropriate elasticity to this core material, the water blocking member will adhere well when pressed against the pipe wall. When attaching the synthetic rubber to the core material, it may be on one side or both sides of the core material. This is because when the core material is fibrous or porous, when the water blocking member is pressed by the rehabilitating pipe or the like, the adhesive exudes from the gap between the core materials and spreads on both surfaces of the core material. By using such a water blocking member, the flange formed at the tip portion of the attachment pipe-side rehabilitation pipe can be brought into close contact with the main pipe or the main pipe-side rehabilitation pipe.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

<Water Stopping Member> First, the water stopping member used in the present invention will be described with reference to FIGS. The water-blocking member 4 shown in FIG. 1 has a non-woven fabric made of PET (polyethylene terephthalate) fiber as a core material 41, and an adhesive 42 made of butyl rubber as a main material attached to both surfaces of the core material 41. The adhesive thickness of the adhesive 42 is practically about 2 to 5 mm on one side, but this thickness can be increased or decreased to some extent depending on the situation of the water stop location. In the water blocking member 4 illustrated, thin iron pieces 43 are attached in the vicinity of the four corners of the core member 41 in order to facilitate the attachment and detachment of the water blocking member to the sticking device for carrying in and sticking the water blocking member. The iron pieces 43 are covered with the adhesive 42, and the iron pieces can be detachably held by an electromagnet provided on the sticking device side.

The core material 41 may be made of a fibrous material other than PET fiber. The form thereof may be a net-like body, a woven fabric, a web or the like as long as it has appropriate elasticity. Further, it is also possible to use a porous thin plate having elasticity, for example, a sheet or film made of synthetic resin such as polyethylene or polypropylene having a large number of holes.

As the synthetic rubber adhesive 42, in addition to butyl rubber, synthetic rubber such as polyisobutylene, styrene-butadiene rubber, polychloroprene (neoprene) rubber, nitrile rubber, etc. in a highly viscous solution is used. can do. These synthetic rubbers are excellent in corrosion resistance, spreadability, adhesiveness, etc., but when they are made into a solution, the shape-retaining power of themselves decreases and they drop or sag under their own weight. The sheet-like shape is easily attached by being attached to the sheet 41.

The water shut-off member 4 shown in FIG. 2 has a circular shape as a whole rather than the above-mentioned rectangular shape, and an opening 44 having a size corresponding to the mounting pipe port 12 is formed in the approximate center thereof in advance. It was done. The core material 41 and the adhesive material 42 are the same as those described for the water blocking member 4 in FIG.

<Water Stopper Sticking Device> The above water stop member is carried into the pipe via the sticking device 5 as shown in FIGS. 3 to 4, and pressed to a predetermined position on the pipe wall. It is attached. Hereinafter, the sticking device 5 will be described.

In the pasting device 5 shown in the example, the push plate 51 for holding the water blocking member 4 can move in the main pipe 1 by a carriage 52.
It is held so as to be able to move up and down with respect to the carriage 52 and to be tilted along the inner circumferential direction of the main pipe 1 via the lifting support means and angle adjusting means provided above. is there.

The trolley 52 is formed so that its bottom portion extends along the inner surface of the main pipe 1. Near the four corners of the bottom portion, substantially hemispherical leg portions 53 made of a material such as resin or metal that easily slips on the inner surface of the main pipe 1 are attached. This dolly 52
Moves to a predetermined location of the main pipe 1 (in this example, around the connection port of the mounting pipe 2) by traction guidance with a wire or the like or through an appropriate self-propelled means.

A pair of support members 54 are provided upright in front of and behind the carriage 52 so as to face each other. A shaft member 55 and a bearing member 56 are attached to the upper portions of the front and rear support members 54 so that their front and rear axes coincide with each other, thereby forming a rotary shaft parallel to the traveling direction of the carriage 52. .
A base 57 is attached to the rotary shaft in a suspended state. The base portion 57 includes an oscillating member 58 attached to the front and rear shaft members 55, respectively, and an oscillating member 58 in the front and rear.
Is formed by a pair of left and right connecting rods 59 that connect the
It is held so as to be tiltable to the left and right with respect to the traveling direction around the rotation axis. A motor 60 for changing the tilt angle of the base 57 is attached to one of the front and rear ends of the carriage 52, and the drive shaft of the motor 60 is coupled to one shaft member 55. This motor 60
Are artificially controlled from outside the main body 1. The front and rear supporting members 54, the base 57 and the motor 60 constitute an angle adjusting means.

Pantograph-type registration tongues 61 are attached to the front and rear of the base 57, respectively. The registration tongue 61 is a mechanism that has been conventionally used for a pantograph of a train, a retractable magic hand, and the like, and has a plurality of link arms 62 that are hinged to intersect with each other in a rhombus shape, and form a pair of base end portions. When the interval of 63 is expanded or contracted, the crossing angle of the link arm 62 changes and the entire length expands or contracts. The registering tongues 61 used in the sticking device 5 are provided so as to form a pair of right and left in front of and behind the base 57 with the extension direction facing upward. The respective base end portions 63 are integrally connected to each other in the width direction of the base portion 57 via elongated base end connecting members 64. Each base end connecting member 64 has a pair of left and right connecting rod insertion holes 65, and the left and right connecting rods 5 that form the base 57 in these connecting rod insertion holes 65.
9 are inserted respectively.

Further, a female screw hole 67 is formed in the widthwise center of the base end connecting member 64, and a guide bolt 68 provided in the widthwise center of the base 57 is formed in the female screw hole 67. It is screwed. The guide bolt 68 has a base 57.
Is arranged between the rocking members 58 before and after forming the gear 6
It is configured to be rotated by receiving a driving force of a motor 71 placed substantially in the center of the base portion 57 via 9, 70.
Also, near both ends of the guide bolt 68. Male screws corresponding to the female screws formed on the base end connecting member 64 are formed respectively. The female screw and the male screw are respectively the left screw 72 and the right screw 7 with respect to the pair of base end portions 63.
It is 3. Therefore, when the guide boll rotates, the base end connecting member 64 screwed to the guide boll moves in the opposite directions so as to expand or contract the interval between the base end portions 63 of the respective resisting portions 61. The lifting tongue 61, the base end connecting member 64, the guide bolt 68, and the motor 71 form an up-and-down supporting means.

A cover member 74 is formed at the upper end of the registration tongue 61 so as to cover the left and right registration tongues 61.
Is attached. A pressure plate support arm 75 is attached to the side surface of the cover member 74 so as to project obliquely upward and to the left and right with respect to the traveling direction of the carriage 52. Both ends of the pressing plate support arm 75 are hinged to the side surface of the cover member 74 and the four corners of the rear surface of the pressing plate 51.

The pressing plate 51 is formed of a metal plate or a resin plate having an appropriate bending elasticity, and is held by the pressing plate support arm 75 in a curved state so that the front surface side is convex. The pressing plate 51 is shaped so that the bending radius in the normal state is smaller than the inner radius of the main pipe 1. The surface of the pressing plate 51 is subjected to a mold release treatment so that the synthetic rubber-based adhesive material 42 forming the water blocking member 4 can be detachably held.

The elevating and supporting means operates to operate the cover member 7.
When 4 rises, the cover member 74 presses the pressing plate 51 against the inner surface of the main pipe 1 via the pressing plate supporting arm 75.
Then, the pressing plate 51 first contacts the inner surface of the main pipe 1 from the vicinity of the center thereof. When the cover member 74 further rises,
The pressing plate support arms 75 that have received a reaction force from the inner surface of the main pipe 1 are rotated so that the mutual angles become close to horizontal, and the pressing plate 5 is rotated.
Enlarge the radius of curvature of 1. As a result, the pressing plate 51 is gradually pressed against the inner surface of the main pipe 1 from the vicinity of the center to both side edges. Further, when the elevating and supporting means operates in the opposite direction to lower the cover member 74, the pressing plate 5
1 is gradually separated from the main pipe 1 toward the vicinity of the center while reducing the diameter of the curvature pipe by its elasticity. By such a raising / lowering operation of the pressing plate 51, the sticky sheet-like water blocking member 4 can be accurately attached to the main pipe 1 without leaving bubbles between the main pipe 1 and the main pipe 1. .

A round window hole 76 is formed near the center of the pressing plate 51. A camera 77 for positioning is attached to the rear surface side of the pressing plate 51 (upper part of the motor in this example) facing the window hole 76. By monitoring the inner surface of the upper part of the main pipe 1 with this camera 77 through the round hole 43 formed in the water blocking member 4 and the window hole 76 formed in the pressing plate 51, the pressing plate 51 is connected to the connection port of the mounting pipe 2. It is possible to adjust the position of the carriage 52 and the up-down direction of the pressing plate 51 so that it is located immediately below.

Further, the sticking device 5 of the water blocking member 4 includes:
A posture fixing means for fixing the carriage 52 when the pressing plate 51 is pressed against the inner surface of the main pipe 1 is provided. This attitude restraining means uses the pressing plate 51 for the main pipe 1 when the mounting pipe 2 connected to the main pipe 1 is open not obliquely above the main pipe 1 but obliquely upward.
The trolley 52 is driven by the reaction force when it is pressed diagonally upward with respect to
Are provided in order to prevent an inclination of the main body 1 in the main body 1.

The attitude restraining means is formed by a telescopic member 78 provided upright in front of and behind the carriage 52. Elastic member 78
Is a cylinder piston mechanism that expands and contracts due to fluid pressure such as air pressure, gas pressure, and hydraulic pressure.
In each of the front and rear parts, two elastic members 78 are provided so as to form a pair on the left and right. The cylinder portion 79 of the expansion / contraction member 78 is fixed to the dolly 52 in a stationary state, and the piston rod portion 80 is projected and retracted in the vertical direction from the cylinder portion 79. At the upper end of the piston rod 80,
An abutting member 81 is attached so as to integrally connect the left and right piston rod portions 80. The surface of the abutting member 81 is formed so as to exert an appropriate frictional force with the inner surface of the main pipe 1. After the carriage 52 is positioned at a predetermined position through the positioning camera 77 described above, the elastic member 78 is extended by an artificial operation from the outside, and the abutting member 81 is abutted against the inner surface of the main pipe 1.
Then, the carriage 52 is fixed in the main pipe 1 in a stretched state, and the work of attaching the water blocking member 4 obliquely above the main pipe 1 can be performed accurately.

<Water stoppage work of the mounting pipe mouth> Next, the case where the main pipe 1 is not lined with the rehabilitation pipe 3 (3A) and the main pipe 1 is lined with the rehabilitation pipe 3 (3A) For each of them, the process of water stoppage work of the mounting pipe port will be described. 5 to 6 show a part of the process when the main pipe 1 is not lined, and FIGS. 7 to 8 show a part of the process when the main pipe 1 is lined.

When the main pipe 1 is not lined, the water blocking member 4 is attached to the attachment pipe opening 12 and then the opening 45 is formed (FIG. 5), and the opening 44 is previously formed. Of the methods for attaching the water member 4 to the attachment pipe opening 12 (FIG. 6),
Either can be selected and implemented.

In the method of adhering the water blocking member 4 to the mounting pipe port 12 and then forming the opening 45, first, as shown in FIG. Such a water blocking member 4 is carried into the main pipe 1 and attached so as to close the mounting pipe port 12. Next, as shown in FIG. 5B, the boring device 93 is carried into the main pipe 1, and the boring device 93 forms the opening 45 corresponding to the mounting pipe port 12 in the water blocking member 4.

On the other hand, in the method of adhering the water blocking member 4 having the opening 44 formed in advance to the attachment pipe port 12, the water blocking member 4 as shown in FIG. It is carried in, and the opening 44 of the water blocking member 4 is attached to the periphery of the mounting pipe opening 12 so that the opening 44 is aligned with the mounting pipe opening 12.

In any of the above cases, if water or mud adheres to the inner surface of the main pipe 1, the adhesion of the water blocking member 4 may deteriorate. It is preferable to apply an adhesive composed of a water-curable resin to the surface in advance. Thereby, the water blocking member 4 can be sufficiently brought into close contact with the pipe wall of the main pipe 1.

By any of the above steps, the mounting pipe port 1
If the water blocking member 4 is attached to the periphery of 2, the above-mentioned FIG.
As shown in FIG. 17, the rehabilitation pipe 3 (3B) is inserted into the mounting pipe 2 to expand the diameter inside the mounting pipe 2, and the tip portion is cut off to form the flange 35. The details of this step are the steps of inserting the rehabilitation tube described in the above-mentioned conventional technique,
It is the same as the diameter increasing process of the rehabilitating pipe and the process of treating the tip portion of the rehabilitating pipe.

When lining the main pipe 1,
A method of adhering the water blocking member 4 to the main-side rehabilitation pipe 3 (3A) and then forming the openings 30 and 45 (FIG. 7), and forming the opening 30 in the main-side rehabilitation pipe 3 (3A). After that, the opening 4
One of the methods (FIG. 8) of adhering the water blocking member 4 formed with 4 to the main pipe side rehabilitation pipe 3 (3A) can be selected and carried out. In any case, the rehabilitation pipe 3 (3A) used for lining rehabilitation of the main pipe 1 has the same properties as the rehabilitation pipe 3 (3B) for the mounting pipe shown in FIGS. The main pipe 1 is lined by a process similar to the process of inserting the rehabilitating pipe and the process of expanding the diameter of the rehabilitating pipe described in 1 above.

Then, the water blocking member 4 is connected to the main side rehabilitation pipe 3 (3
In the method of forming the openings 30 and 45 after adhering to A), as shown in FIG.
The water blocking member 4 as shown in (1) is carried into the main pipe 1, and is attached to the main pipe side rehabilitating pipe 3 (3A) at a position facing the mounting pipe port 12. Next, as shown in FIG. 7B, the hole drilling device 93 is carried into the main pipe-side rehabilitation pipe 3 (3A) so that the water stop member 4 and the main pipe-side rehabilitation pipe 3 (3A) are penetrated. , Openings 30 and 45 communicating with the mounting pipe port 12 are formed.

On the other hand, in the method of adhering the water blocking member 4 having the opening 44 formed in advance to the main pipe side rehabilitation pipe 3 (3A), first, as shown in FIG. The hole drilling device 93 is carried into (3A), and the opening 30 corresponding to the mounting pipe port 12 is opened by the hole drilling device 93 to the main side rehabilitating pipe 3 (3).
Formed in A). Next, as shown in FIG. 8B, the water blocking member 4 as shown in FIG. 2 is carried into the main-side rehabilitation pipe 3 (3A) through the sticking device 5, and the water blocking member 4 Opening 4
4 is attached to the periphery of the attachment pipe opening 12 so as to match the opening 30 formed in the main-side rehabilitation pipe 3 (3A).

In this way, if the water blocking member 4 is adhered to the periphery of the mounting pipe port 12 by any of the above-described steps, the mounting pipe 2 and the rehabilitation pipe 3 are attached in the same manner as when the main pipe 1 is not lined. (3B) is inserted, the diameter is expanded in the mounting pipe 2, and the tip portion is cut off to form the flange 35. The details of such steps are also the same as the steps of inserting the rehabilitating pipe, expanding the diameter of the rehabilitating pipe, and treating the tip portion of the rehabilitating pipe described in the above-mentioned conventional technique.

[0047]

As described above, according to the water blocking method for the mounting pipe of the present invention, the flange-shaped flange formed at the tip of the rehabilitation pipe on the mounting pipe side has the adhesive water blocking member interposed therebetween. Since it comes into close contact with the inner surface of the main pipe or the main-side rehabilitation pipe lining the main pipe, water can be completely stopped around the mounting pipe port.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a water blocking member used in implementing the present invention.

FIG. 2 is a perspective view showing another example of the water blocking member.

FIG. 3 is a schematic cross-sectional view in the tube axis direction showing an example of a sticking device for a water blocking member used in the practice of the present invention.

4A and 4B are schematic cross-sectional views in the width direction showing an example of a sticking device for water blocking members, where FIG. 4A shows a state where the pressing plate is raised, and FIG. 4B shows a state where the pressing plate is lowered. It is a figure.

FIG. 5 is a process explanatory view showing the embodiment of the present invention,
It is a figure which shows the process of forming an opening, after sticking a water blocking member to an attachment pipe mouth, when not lining a main pipe.

FIG. 6 is a process explanatory view showing the embodiment of the present invention,
It is a figure which shows the process of sticking the water blocking member which formed the opening part in advance to a mounting pipe opening, when not lining a main pipe.

FIG. 7 is a process explanatory view showing the embodiment of the present invention,
It is a case where a main pipe is lined, and it is a figure which shows the process of adhering a water blocking member to an attachment pipe mouth, and forming an opening part.

FIG. 8 is a process explanatory view showing the embodiment of the present invention,
It is a case where a main pipe is lined, and it is a figure which shows the process of sticking the water blocking member which formed the opening part in advance to a mounting pipe mouth.

FIG. 9 is a partial perspective view showing a configuration example of a rehabilitation pipe used in implementing the present invention.

FIG. 10 is a vertical cross-sectional view of an underground conduit showing an outline of a step of inserting the rehabilitation pipe of FIG. 9 into a mounting pipe.

FIG. 11 is a partial vertical cross-sectional view in the vicinity of a mounting pipe port showing a state in which a rehabilitation pipe is inserted into the mounting pipe.

FIG. 12 is a partial vertical cross-sectional view in the vicinity of a mounting pipe port showing a state where a diameter-enhanced rehabilitating pipe is brought into close contact with the inner surface of the mounting pipe.

FIG. 13 is a vertical cross-sectional view of an underground conduit showing an outline of a step of expanding the diameter of a rehabilitation pipe in a mounting pipe.

FIG. 14 is a cross-sectional view showing the expanded diameter state of the rehabilitation pipe in the order of (a) to (c).

FIG. 15 is a partial vertical cross-sectional view in the vicinity of the mounting pipe opening showing a step of cutting the tip end of the expanded rehabilitation pipe with a cutting machine.

FIG. 16 is a partial vertical cross-sectional view in the vicinity of a mounting pipe opening showing a state in which a thermoforming device is pressed against the protruding portion of the rehabilitating pipe when a flange is formed on the tip of the rehabilitating pipe.

FIG. 17 is a partial vertical cross-sectional view showing the state of a flange formed at the tip of a rehabilitating pipe in the vicinity of a mounting pipe port.

[Explanation of symbols]

1 main 12 Mounting pipe port 2 Mounting tube 3 (3A) Rehabilitation pipe (main pipe rehabilitation pipe) 3 (3B) Rehabilitation pipe (mounting pipe side rehabilitation pipe) 30 Opening of main rehabilitation pipe 34 Projection 35 flange 4 Water stop member 41 core material 42 Adhesive 44 Opening of water stop member 45 Water-stop member opening 81 Masu

Claims (5)

[Claims] 1. A step of adhering a sheet-shaped water-stop member having a synthetic rubber-based adhesive material as a main material around the attachment pipe opening in the main pipe, and an opening corresponding to the attachment pipe opening in the water-stop member. And a step of inserting a rehabilitation pipe made of a thermoplastic resin into the mounting pipe from the side of the masu, and inserting the closed tip of the rehabilitation pipe into the opening of the water blocking member to reach the main pipe. And heating and pressurizing this rehabilitating pipe from the side of the masu until it is in close contact with the inner surface of the mounting pipe, and leaving a cylindrical protrusion protruding into the main pipe near the tip of the rehabilitated pipe. Forming a flange-like flange on the tip of the rehabilitating pipe by cutting off the tip of the rehabilitating pipe and shaping the protrusion so as to extend along the inner surface of the main while heating and expanding the protruding portion from the main pipe side. And a step of bringing the flange into close contact with the main pipe through the water blocking member. A method of stopping water at a mounting pipe mouth, characterized by stopping water around the mounting pipe mouth. 2. A sheet-shaped water stop member mainly made of a synthetic rubber adhesive material around an attachment pipe opening of a main pipe, and an opening corresponding to the attachment pipe opening is formed in the substantial center thereof in advance. The step of sticking the water blocking member, and inserting a rehabilitation pipe made of thermoplastic resin into the mounting pipe from the side of the box, and inserting the closed tip of the rehabilitation pipe into the opening of the water blocking member. The process of reaching the inside of the main pipe, the process of heating and pressurizing this rehabilitating pipe from the box side until the inner diameter of the mounting pipe is intimately contacted, and the cylindrical shape protruding into the main pipe near the tip of the rehabilitated pipe that has expanded diameter The step of cutting off the tip of the rehabilitating pipe leaving the protruding part of the rehabilitating pipe, and pressing the protruding part from the main pipe side while expanding to shape it along the inner surface of the main pipe A step of forming a flange-like flange is provided, and the flange is sealed to the main pipe through the water blocking member. Waterproofing method of mounting tube opening, characterized in that the water stop around the attachment tube outlet by. 3. A step of inserting a rehabilitating pipe made of a thermoplastic resin into the main pipe, and heating and pressurizing the rehabilitating pipe in the main pipe to expand the diameter of the rehabilitating pipe until the inner surface of the main pipe is brought into close contact with the main pipe. A step of adhering a sheet-shaped water blocking member mainly composed of a synthetic rubber-based adhesive material around a mounting pipe opening in the rehabilitating pipe for lining the main pipe, and a rehabilitating pipe for lining the main pipe, and A step of forming an opening corresponding to the mounting pipe port in the water blocking member, and inserting a rehabilitation pipe made of a thermoplastic resin into the mounting pipe from the side of the masu, and reclosing the closed tip of the rehabilitation pipe to the main side rehabilitation. A step of inserting the pipe and the opening formed in the water blocking member to reach the inside of the main pipe, and a step of heating and pressurizing the rehabilitation pipe inserted into the mounting pipe from the side of the masu until it is in close contact with the inner surface of the mounting pipe. And near the tip of the expanded pipe rehabilitation pipe A step of cutting off the distal end of the mounting pipe side rehabilitation pipe leaving a cylindrical protruding portion protruding into the main pipe, and pushing the protruding portion while heating from the main pipe side to extend along the inner surface of the main pipe rehabilitation pipe By forming a flange-shaped flange on the tip of the rehabilitation pipe on the mounting pipe side by shaping as described above, and by attaching the flange to the main rehabilitation pipe through the water blocking member, A method of stopping water at the mounting pipe mouth, which is characterized by stopping the surrounding water. 4. A step of inserting a rehabilitating pipe made of a thermoplastic resin into the main pipe, and heating and pressurizing the rehabilitating pipe in the main pipe to expand the diameter of the rehabilitating pipe until the inner surface of the main pipe is brought into close contact with the main pipe. And a step of forming an opening corresponding to a mounting pipe opening in the rehabilitating pipe lining the main pipe, and a synthetic rubber-based adhesive material as a main material around the mounting pipe port in the rehabilitating pipe lining the main pipe. And a sheet-shaped water stopping member, in which a water stopping member having an opening corresponding to the mounting pipe opening is formed in substantially the center thereof, and a rehabilitating pipe made of a thermoplastic resin from the side of the masu A step of inserting the rehabilitating pipe into the main pipe, and inserting the closed tip of the rehabilitating pipe into the main pipe-side rehabilitating pipe and the opening formed in the water blocking member to reach the main pipe; and the rehabilitating pipe inserted into the mounting pipe. Heat and pressurize from the box side to close the inner surface of the mounting pipe. Until the end of the rehabilitating pipe on the mounting pipe side is expanded, and the tip of the rehabilitating pipe on the mounting pipe side is cut off leaving a cylindrical protrusion protruding into the main pipe near the tip of the rehabilitating pipe on the mounting pipe side. A step of forming a flange-like flange at the tip of the mounting pipe side rehabilitating pipe by pressing and expanding while heating from the main pipe side and shaping it along the inner surface of the main tube rehabilitating pipe, A method of stopping water at an attachment pipe opening, wherein the periphery of the attachment pipe opening is stopped by bringing the flange into close contact with the main-side rehabilitation pipe through a member. 5. The water blocking member has a stretchable cloth-like body, a net-like body or a porous thin plate as a core material, and a main material made of a synthetic rubber adhesive on one or both sides of the core material. 5. The method for stopping water at a mounting pipe opening according to claim 1, wherein the method is one in which the attachment pipe has a substantially uniform thickness.