JP2003214098A - Block body for repairing channel facility and channel facility repairing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a channel facility repairing method capable of carrying out desired repairing work while allowing flowing of service water even in a channel facility with a large diameter. <P>SOLUTION: The channel facility repairing method is carried out by using the block bodies 1 for repairing the channel facility composing a tubular, angular or horseshoe shaped cylindrical body 15 by assembly and comprised by integrally forming an inner face plate composing an inner circumferential face and an outer circumferential plate erected on a circumferential rim of the inner face plate by plastic and respectively forming a recessed part on one longitudinal outer end face of the outer face plate and a protruding part on another. In a conduit (the channel facility) 20, short conduit bodies 2 are formed by connecting circumferentially adjacent block bodies 1 by a nut screwed onto a bolt piercing both circumferential end faces of each block body 1, the continuous cylindrical body 15 with an outer diameter smaller than a conduit inner diameter is formed in the conduit 20 by connecting the short conduit bodies 2 in a longitudinal direction, and a grout material is grouted in a clearance space S formed between the cylindrical body 15 and the channel 20. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow path facility repairing block body and a flow path facility repairing method constructed using the block body.

[0002]

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

That is, in the above-mentioned pipe lining method, for example, a pipe lining material formed by impregnating an uncured thermosetting resin into a tubular resin adsorbing material is inserted into a pipe line while being inverted by a fluid pressure, While the lining material is being pressed against the inner peripheral wall of the pipeline by fluid pressure, the pipe lining material is heated by an arbitrary method to cure the thermosetting resin impregnated in it, thereby forming a plastic pipe in the pipeline. This is a method of repairing the pipeline.

In such a pipe lining method, it is necessary to temporarily stop or bypass the flow of service water so that service water such as sewage does not flow to the repaired portion of the pipe.

However, particularly in the case of a large-diameter pipe, the amount of service water to be bypassed becomes large, so that a facility for bypassing service water becomes large-scaled, which makes repair work difficult.

[0006] Therefore, as a construction method for restoring the pipeline while supplying service water, a cylindrical short tubular body having an outer diameter smaller than the inner diameter of the pipeline is introduced from the manhole to the inlet of the pipeline, and the short tubular body is introduced. There has been proposed a method of repairing a pipeline by repeating the work of pressing it with a hydraulic jack or the like and inserting it into the pipeline.

[0007]

However, when the above construction method is applied to a pipe having a large diameter (for example, an inner diameter of 600 mm or more), the short pipe used in this construction also has a large diameter. There was a problem that the short pipe could not be passed through the manhole.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a flow path facility capable of performing a desired repair work while flowing service water to a flow path facility having a large diameter. It is to provide a restoration block body and a flow path facility restoration method using the restoration block body.

[0009]

In order to achieve the above object, the present invention is a block body which constitutes a tubular body having a tubular shape, a prismatic shape or a horseshoe shape by assembling, and an inner surface plate which constitutes an inner peripheral surface. In a block body for repairing a flow path facility, which is integrally formed of a plastic with an outer peripheral plate provided upright on the peripheral edge of the inner surface plate, a concave portion is formed on one of the outer end surfaces in the length direction of the outer surface plate, and a convex portion is formed on the other surface. It is characterized in that each part is formed.

Further, the present invention is a block body which constitutes a tubular, prismatic or horseshoe-shaped tubular body by assembling, and is erected on an inner face plate constituting an inner peripheral face and a peripheral edge of the inner face plate. The outer peripheral plate and plastic are integrally formed,
As a flow path facility repairing method constructed using a flow path facility repairing block body formed by forming a concave portion on one of the lengthwise outer end surfaces of the outer surface plate and a convex portion on the other side, , The flow path facility repair block bodies that are adjacent to each other in the circumferential direction are connected by bolts and nuts that are screwed into the bolts that are inserted into the circumferential direction end faces of each flow path facility repair block body to form a short tubular body. Forming a continuous tubular body having an outer diameter smaller than the inner diameter of the flow passage in the flow passage facility by connecting the short tubular bodies in the lengthwise direction, and then forming the tubular body and the flow passage facility. It is characterized by injecting grout material into the clearance space.

Therefore, according to the present invention, a plurality of divided flow path facility repair block bodies are circumferentially connected in the flow path facility to form a short pipe body, and the short pipe body is formed in the longitudinal direction. Since a continuous cylindrical body with an outer diameter smaller than the inner diameter of the flow passage is formed in the flow passage facility by connecting each block body through the manhole etc. even when repairing the large-diameter flow passage facility, It is possible to form a continuous cylindrical body in the flow path facility by introducing it into the inlet of the and assembling it. Since this work can be performed while flowing the service water into the flow path facility, it is possible to perform the desired restoration work while flowing the service water even to the flow path facility having a large diameter.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view of a block body for repairing a flow path facility according to the present invention, FIG. 2 is an external view of the block body for repairing a flow path facility (a view in the direction of arrow A in FIG. 1), and FIG. 2 is a sectional view taken along line BB in FIG. 2, FIG. 4 is a view in the direction of arrow C in FIG. 2, and FIG. 5 is D in FIG.
-D line sectional view, FIG. 6 is a sectional view taken along line EE of FIG. 2, FIG. 7 is a view similar to FIG. 6 showing a modified example of the present embodiment, FIG. 8 is a side view of the cover, and FIG. 8 is a sectional view taken along line FF of FIG.

A block body for repairing a flow path facility (hereinafter, simply referred to as a block body) 1 according to the present invention comprises a short pipe body 2 having an outer diameter smaller than the inner diameter of a pipe passage 20 shown in FIGS. 10 and 11. The block body 1 forms a part (the short tube body 2 is divided into a plurality of pieces (in this embodiment, divided into five)), and the block body 1 has an arc flat plate-shaped inner surface plate 1 forming an inner peripheral surface.
A, an outer peripheral plate 1B standing outwardly on the peripheral edge of the inner surface plate 1A, a plurality of reinforcing ribs 1C for reinforcing the inner surface plate 1A and the outer peripheral plate 1B, and a plurality of reinforcing ribs 1C for preventing deformation of the reinforcing ribs 1C. Convex plate 1D and box portions 1E provided at both ends in the circumferential direction
Is integrally formed of plastic.

Here, the block 1 is made of transparent plastic such as vinyl chloride, ABS, Durastar Polymer (trade name), translucent plastic such as PVC and polyethylene, or PVC, polyester, ABS, polyethylene, polypropylene and the like. Is integrally molded by an injection method using an opaque plastic, the weight thereof is 1 kg to 10 kg, the thickness of the inner surface plate 1A and the outer peripheral plate 1B is set to 1.0 mm to 10.0 mm, and the circumferential dimension L is set.
Is set to be larger than the dimension b in the width direction (length direction of the conduit 20) (L> b) (see FIG. 2).

By the way, in the block body 1, a plurality (five in this embodiment) of the reinforcing ribs 1C extending in the circumferential direction (left and right direction in FIG. 2) on the inner surface plate 1A are arranged in the width direction (up and down direction in FIG. 2). Direction, and is arranged in parallel at an appropriate interval in the lengthwise direction of the conduit 20, and the plurality of (13 in the present embodiment) convex plates 1D are provided on the inner face plate 1A with respective reinforcing ribs. 1
It extends in a direction (width direction) orthogonal to C, and these are arranged in parallel at appropriate intervals in the circumferential direction. Therefore, in the block body 1, the inner surface plate 1A and the outer peripheral plate 1B are reinforced by a plurality of reinforcing ribs 1C and a plurality of convex plates 1D that form a lattice to increase the rigidity.

As shown in FIG. 2, the outer peripheral plate 1B and the reinforcing rib 1C are divided by the convex plate 1D,
The large-diameter bolt insertion hole 3 and the small-diameter bolt insertion hole 4 are formed in a straight line in the width direction (vertical direction in FIG. 2). Here, as shown in FIG. 6, the inner diameter φD of the bolt insertion hole 3 formed in the outer peripheral plate 1B is larger than the inner diameter φd of the bolt insertion hole 4 formed in the reinforcing rib 1C (φD> φ).
d) It is set.

Here, as shown in FIG. 6, a space 5 cut in a V shape is formed in each portion surrounded by the reinforcing rib 1C of each convex plate 1D, and the space 5 has a V shape. The tip is in contact with the inner surface plate 1A. As shown in FIG. 7, each of the convex plates 1D has a circular hole-shaped space 5'which is in contact with the inner plate 1A.
It may be formed in each portion surrounded by the reinforcing rib 1C.

Further, the inner and outer surfaces of the box portion 1E formed at both ends in the circumferential direction of the block body 1 are open, and the inside of the box portion 1E is arranged in parallel in the width direction as shown in FIG. The outer peripheral plate 1B, which is partitioned by six reinforcing ribs 6 in the present embodiment, and which constitutes the circumferential outer end face thereof, is provided with a plurality (5 in the present embodiment) as shown in FIGS. 4 and 5.
(3) Bolt insertion hole 7 and air vent hole 8 are formed. As shown in FIG. 5, air vent holes 9 are also formed obliquely on the inner wall of the outer peripheral plate 1B. Further, as shown in FIG. 5, a rectangular groove 2 is formed on one end surface of the outer peripheral plate 1B in the circumferential direction.
The concave portion 1a of the book has two convex portions 1b having a mountain-shaped cross section on the other end surface.
Are formed over the entire width.

Further, as shown in FIG. 4, two outer peripheral surfaces of the outer peripheral plate 1B of the block 1 are formed with two rectangular groove-shaped recesses 1c on one outer end surface (outer end surface in the length direction) of the outer peripheral plate 1B. Two convex portions 1d having a chevron cross section are integrally formed on the other outer end surface.

Further, as shown in FIG. 1, two outer and inner peripheral plates 1B of the block 1 are formed with two rectangular holes 10 inside and outside, respectively (in FIG. 1, only one outer peripheral plate 1B is formed). (Shown).

Next, referring to FIGS. 10 to 20, a mode in which the flow path facility repairing method according to the present invention constructed by using the block body 1 shown in FIGS. explain.

10 and 11 are cross-sectional views of a pipeline showing a method for repairing a flow path facility according to the present invention, FIG. 12 is a cross-sectional view showing a method of connecting blocks adjacent to each other in the circumferential direction, and FIG.
12 is a view in the direction of arrow G in FIG. 12, FIG. 14 is a cross-sectional view showing a connecting structure of block bodies adjacent to each other in the circumferential direction, and FIGS. The fracture | rupture side view shown, FIG. 17 is the HH sectional view taken on the line of FIG.
FIG. 18 is a cross-sectional view of a pipe line in which a tubular body is formed, FIG. 19 is a partial cross-sectional view of a pipe line showing an air reservoir generated between the block body and the pipe line, and FIG. It is the fragmentary perspective view which fractured | ruptured a part of completed pipeline.

In FIGS. 10 and 11, 20 is a pipe line such as a sewer pipe buried substantially horizontally in the ground, 21 is a manhole opening to the ground, and in the restoration method according to the present invention, they are adjacent to each other in the circumferential direction. As shown in FIG. 11, a plurality of ring-shaped short pipes 2 formed by connecting a plurality of (five) block bodies 1 to each other are connected in the pipe 20 in the longitudinal direction of the pipe 20.
One tubular body 15 is formed in the conduit 20.

Thus, the short pipe body 2 is formed by connecting the block bodies 1 one by one in the pipe line 20 in the circumferential direction, and the tubular body 15 connects the short pipe bodies 2 in the longitudinal direction. However, these operations can be performed while flowing service water such as sewage into the pipeline 20. It should be noted that the work can be performed even in the state where the service water is stored in the bottom portion of the pipeline 20.

Then, the block bodies 1 are connected in the circumferential direction in the following manner to form the short tube body 2.

That is, the block body 1 to be assembled is shown in FIG.
As shown in 0, it is introduced from the manhole 21 to the inlet portion of the pipe 20, but the block body 1 has a small size because each short pipe body 2 constituting the tubular body 15 is divided into a plurality of pieces. Therefore, the pipe 20 has a large diameter (φ600m
(m or more), each block body 1 used for repairing the conduit 20 can be easily introduced from the manhole 21 and assembled.

Here, in the block body 1 before assembling, as shown in FIG. 20, the outer surface openings of the box portions 1E formed at both ends in the circumferential direction have the cover 1 shown in FIG. 8 and FIG.
Covered by 6.

Here, the cover 16 is integrally molded with plastic, and as shown in FIG. 8, engaging claws 16a are integrally formed at both ends in the width direction, and a total of eight anchor claws 16b are integrally formed on the lower surface. Is formed in. The cover 16 is placed on the box portion 1E of the block body 1 so as to cover the outer surface opening thereof, and the engaging claws 16a at both ends thereof are formed in the rectangular hole 10 formed in the outer peripheral plate 1B of the block body 1.
After engaging with the cover 16 (see FIG. 1), the cover 16 is adhered or welded with an adhesive to cover the outer surface opening of the box portion 1E of the block body 1 with the cover 16 as described above.

Further, in the block body 1 before assembling, as shown in FIG. 15, seven bolts 22 (only two in FIG. 15 are longer than the length dimension b (see FIG. 2) of the block body 1). (Shown in the drawing) are alternately passed through bolt insertion holes 3 and 4 having large and small diameters formed in the outer peripheral plate 1B and the reinforcing ribs 1C, and each bolt 22 is connected by a nut 23 screwed into the bolt.
The threaded portion projects outward from one end surface of the block body 1 as illustrated. Also, in each block body 1 that has already been assembled, a bolt 22 is inserted and fixed to one end surface of the block body 1, and the threaded portion of each bolt 22 projects outward.

Here, the head of each bolt 22 is the outer peripheral plate 1B.
A nut 23 that penetrates the large-diameter bolt insertion hole 3 formed in
Also contacts the reinforcing rib 1C. Therefore, the head of the bolt 22 and the nut 23 are not exposed to the outside of the block body 1. The bolt 22 and the nut 23 are made of metal such as stainless steel or iron, or plastic such as nylon or polyester, and a washer, cushion material, or the like may be sandwiched between the tightening portions.

Thus, the two block bodies 1 adjacent to each other in the circumferential direction are connected to each other in the following manner.

That is, as shown in FIG. 12, the box portions 1E of the two block bodies 1 adjacent to each other in the circumferential direction are in close contact with each other in the circumferential direction, and a plurality of bolt insertion holes 7 and air vent holes formed in them are formed. 8 communicate with each other,
The convex portion 1b formed on the end surface of one block body 1 is fitted into the concave portion 1a formed on the end surface of the other block body 1 to seal the circumferential joint portion of both block bodies 1. At this time, an adhesive may be applied to the concave portion 1a and the convex portion 1b to improve the adhesiveness between them. As the adhesive, an epoxy resin, an adhesive using a tetrahydrafuran solvent, a silicone, acrylic, urethane, or butyl rubber adhesive is used.

Here, since the inner surfaces of both box portions 1E are open, the bolt 24 is inserted from the opening portion of one box portion 1E and is inserted into the bolt insertion hole 7, and the opening portion of the other box portion 1E is opened. By inserting the nut 25 from the portion and screwing it into the bolt 24 (see FIG. 14), by repeating this operation, the two block bodies 1 adjacent in the circumferential direction are connected to each other.

By the way, a tool 26 shown in FIGS. 12 and 13 is used to connect the block bodies 1 to each other by the bolts 24 and the nuts 25. That is, the tool 26 is the motor 27
Is converted into the reciprocating linear motion of the bar 30 via the bevel gears 28 and 29, and the reciprocating linear motion of the bar 30 is converted into the rotational motion of the gear 31. Where gear 3
1 is fitted in the nut 25, and as shown in FIG. 13, the tip of the bar 30 intermittently presses the tooth surface of the gear 31 to rotate the gear 31 and the nut 25 in the direction of the arrow in FIG. Then, the nut 25 is screwed onto the threaded portion of the bolt 24. At this time, the wrench 32 prevents the bolt 24 from rotating.

Then, as described above, the two adjacent to each other in the circumferential direction.
When the two block bodies 1 are connected to each other as shown in FIG. 14, the box portions 1E of the both block bodies 1 are filled with putty, and then each opening is covered with the cover 16 shown in FIGS.
However, at this time, since the cover 16 is formed with the plurality of anchor claws 16b, the anchor effect of the anchor claws 16b in the putty prevents the cover 16 from falling off. As the putty to be filled in the box portion 1E, resin putty such as epoxy resin, polyester resin, silicone resin, or cement putty is used. It is not always necessary to fill the box portion 1E of the block body 1 with putty, and the grout material may be filled in the box portion 1E after assembly.

When the short tube body 2 is formed as described above, a plurality of short tube bodies 2 are connected in the longitudinal direction as shown in FIG. 10 to form one tubular body 15 as shown in FIG. Pipeline 2
Although it is formed within 0, a method of connecting the short tube bodies 2 in the length direction will be described below.

As shown in FIG. 15, the short tubular body 2 before assembly
Is the other short pipe body (pipe line 2) already assembled in the remaining bolt insertion holes 3 and 4 through which the bolt 22 is not inserted.
The short tube body 2 before assembling is brought into close contact with the short tube body 2 as shown in FIGS. Then, as shown in FIG. 17, the convex portion 1d protruding from the lengthwise end face of the short pipe body 2 before assembly is formed on the lengthwise end face of another short pipe body 2 already assembled. Fit in the recess 1c, and
Is positioned and the joint between the two is sealed.

After that, a nut 23 that is screwed into the end of the bolt 22 is inserted into the large-diameter bolt insertion hole 3 that opens in the outer peripheral plate 1B.
By inserting a tool from and tightening it, the short pipe body 2 before being assembled is attached to the short pipe body 2 already assembled as shown in FIG. At this time, the heads of the bolts 22 and the nuts 23 are not exposed to the outside of the block body 1 as described above.
The two short tubular bodies 2 are connected to each other in a flat plane.

As described above, when the two short tubular bodies 2 adjacent to each other in the lengthwise direction of the conduit 20 are connected, the short tubular bodies 2 are sequentially assembled in the lengthwise direction in the same manner as described above. Thus, one tubular body 15 is formed in the conduit 20.

By the way, since the outer diameter of the tubular body 15 formed in the pipe line 20 is smaller than the inner diameter of the pipe line 20, a clearance space S (FIG. 1
1 and FIG. 18), the tubular body 15 floats upward due to buoyancy, so that the radial gap in the upper part of the clearance space S becomes small.

Therefore, in the present embodiment, as shown in FIG. 18, a plurality of support bars 33 made of stainless steel or plastic are attached to the upper portion of the tubular body 15, and these support bars 33 are attached to the inner wall of the upper portion of the conduit 20. By making them abut, the radial clearance of the clearance space S is made substantially uniform over the entire circumference. As another method for preventing the tubular body 15 from rising due to buoyancy, a method of collecting water in the tubular body 15 or the like can be considered.

Then, an end portion of the clearance space S is closed by a sealing material (not shown) made of resin putty or mortar, and a hole formed in a part of the block body 1 constituting the tubular body 15 as shown in FIG. A grout hose 34 is connected to 1e, and a grout material 35 such as cement mortar or resin mortar is injected from the grout hose 34 into the clearance space S. Incidentally, the cement mortar may be mixed with an adhesive emulsion in order to enhance the adhesiveness, or may be mixed with a bleeding inhibitor in order to prevent bleeding. The resin mortar is mainly composed of epoxy resin and polyester resin.

By the way, when the space 5 shown in FIG. 6 or the space 5 ′ shown in FIG. 7 is not formed in the convex plate 1D of each block 1, the grout material 35 is injected into the clearance space S as described above. Then, as shown in FIG. 19, the convex plate 1
The air is partitioned by D, an air pool is generated, and the grout material 35 cannot be filled in the clearance space S.

Therefore, in the present embodiment, the space 5 shown in FIG. 6 or the space 5'shown in FIG. 7 is formed in the convex plate 1D of each block body 1. Therefore, the air is discharged through the space 5 or 5 ', and no air pool is generated in the clearance space S. Therefore, the grout material 35 is removed from the clearance space S.
Surely filled. Further, since a plurality of bolt insertion holes 7 and air vent holes 8 are formed in the outer peripheral plate 1B forming the outer circumferential end surface of the box portion 1E of each block body 1, the circumferential connecting portion of the block body 1 is formed. At any position, the air is discharged upward through the space 5 or 5 ′ formed in the convex plate 1D, so that no air pool is generated in the clearance space S.

Thus, the grout material 3 injected into the clearance space S formed between the tubular body 15 and the conduit 20.
When 5 is cured, the tubular body 15 is integrated with the pipe line 20,
As shown in FIG. 20, the inner peripheral wall of the conduit 20 is lined and repaired by the tubular body 15.

In this embodiment, FIGS. 11 and 20 are used.
As shown in FIG. 2, when connecting the short tubular bodies 2 adjacent to each other in the length direction, the circumferential connecting portions of the block body 1 forming each short tubular body 2 are connected to each other so as not to overlap in the longitudinal direction. I am trying to shift in the direction.

As described above, according to the present invention, the plurality of divided block bodies 1 are circumferentially connected in the pipe line 20 to form the short pipe body 2, and the short pipe body 2 has a length. Since a continuous tubular body 15 having an outer diameter smaller than the inner diameter of the pipeline 20 is formed in the pipeline 20 by connecting in the direction, the large-diameter pipeline 2
When repairing 0, each block 1 is introduced into the inlet of the conduit 20 through the manhole 21 and assembled to form a continuous tubular body 15 in the conduit 20. Since this work can be performed while flowing the service water into the pipe line 20, it is possible to perform a desired restoration work while flowing the service water into the pipe line 20 having a large diameter.

In the above description, the embodiment in which the present invention is applied particularly to the tubular conduit has been described. However, the present invention is similarly applicable to the repair of a square or horseshoe-shaped flow path facility. Of course.

[0050]

As is apparent from the above description, according to the present invention, there is provided a block body constituting a tubular body having a tubular shape, a square shape or a horseshoe shape by assembling, and an inner surface plate constituting an inner peripheral surface. A flow path facility formed by integrally forming an outer peripheral plate that is erected on the peripheral edge of the inner surface plate with plastic, and forming a concave portion on one of the lengthwise outer end faces of the outer surface plate and a convex portion on the other. As a method of repairing a flow path facility that is constructed using repair block bodies, the flow path facility repair block bodies that are adjacent to each other in the circumferential direction in the flow path facility are A short tube is formed by connecting it with a bolt that is inserted into the surface and a nut that is screwed into this, and the short tube is connected in the length direction so that the outside of the inside of the passage is smaller than the inside diameter of the passage. Between the tubular body and the flow path facility after forming the tubular body Due to so as to inject grout into the clearance space formed, there is an advantage that it is possible to perform the desired repair while flowing serviced water against the flow path facility of a large diameter.

[Brief description of drawings]

FIG. 1 is a side view of a pipeline repair block body according to the present invention.

FIG. 2 is an external view (a view in the direction of arrow A in FIG. 1) of the block body for repairing a duct according to the present invention.

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is a view in the direction of arrow C in FIG.

5 is a cross-sectional view taken along line DD of FIG.

6 is a cross-sectional view taken along the line EE of FIG.

FIG. 7 is a view similar to FIG. 6 showing a modification of the embodiment of the present invention.

FIG. 8 is a side view of the cover.

9 is a sectional view taken along line FF of FIG.

FIG. 10 is a cross-sectional view of a conduit showing a method for repairing a channel facility according to the present invention.

FIG. 11 is a cross-sectional view of a pipeline showing a flow path facility repairing method according to the present invention.

FIG. 12 is a cross-sectional view showing a method of connecting block bodies that are adjacent to each other in the circumferential direction.

FIG. 13 is an enlarged detailed view of a G portion in FIG.

FIG. 14 is a cross-sectional view showing a connection structure between blocks that are adjacent to each other in the circumferential direction.

FIG. 15 is a cutaway side view showing a method of connecting ring-shaped members adjacent to each other in the length direction.

FIG. 16 is a cutaway side view showing a method of connecting ring-shaped members adjacent to each other in the length direction.

17 is a sectional view taken along line HH of FIG.

FIG. 18 is a cross-sectional view of a pipe line in which a tubular body is formed.

FIG. 19 is a partial transverse cross-sectional view of a pipeline showing an air reservoir generated between the block body and the pipeline.

FIG. 20 is a partial perspective view in which a part of the pipeline that has been repaired is cut away.

[Explanation of symbols]

1 Block body for pipeline repair 1A inner plate 1B outer peripheral plate 1C Reinforcing rib 1D convex plate 1E Box section 1a, 1c recess 1b, 1d convex part 2 Short tube 3, 4 bolt insertion hole 5,5 'space 7 Bolt insertion hole 8, 9 Air vent hole 15 tubular 16 covers 20 pipelines 22,24 volt 23,25 nuts 26 tools 27 motor 30 bar 35 grout S clearance space

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yasuhiro Yokoshima             175-3 Sasayama, Ishishita-cho, Yuki-gun, Ibaraki             Company Yokoshima F term (reference) 2D055 AA04 BB01 BB02 BB03 CA04                       EB01 GC06 JA00 KA00 KB11                       LA16

Claims (9)

[Claims] 1. A block body that is assembled into a tubular, prismatic, or horseshoe-shaped tubular body, and comprises an inner surface plate that forms an inner peripheral surface and an outer peripheral plate that is erected on a peripheral edge of the inner surface plate. A block body for repairing a flow path facility integrally formed of plastic, characterized in that a concave portion is formed on one of the lengthwise outer end surfaces of the outer plate and a convex portion is formed on the other end surface thereof. Block body. 2. The block body for repairing a flow path facility according to claim 1, wherein a bolt insertion hole and an air vent hole are formed on both end surfaces in the circumferential direction of the outer surface plate. 3. A reinforcing rib having a reinforcing effect in the circumferential direction of the flow path facility is integrally formed on the outer surface of the inner surface plate, and
The block body for repairing a flow path facility according to claim 1, wherein a bolt insertion hole is formed in the reinforcing rib and the outer surface plate. 4. The flow path facility repair block according to claim 3, wherein the inner diameter of the bolt insertion hole formed in the outer surface plate is larger than the inner diameter of the bolt insertion hole formed in the reinforcing rib. body. 5. The bolt according to claim 3, wherein a bolt longer than a lengthwise dimension is passed through a bolt insertion hole formed in the reinforcing rib and the outer surface plate, and the bolt is attached with a nut. Block for repairing pipelines. 6. A block body that constitutes a tubular body having a tubular shape, a prismatic shape, or a horseshoe shape by assembling, and an inner surface plate that forms an inner peripheral surface, and an outer peripheral plate that is erected on a peripheral edge of the inner surface plate. A flow path facility repairing method constructed by using a block body for repairing a flow path facility, which is integrally formed of plastic, and in which a concave portion is formed on one of the outer end surfaces in the length direction of the outer surface plate and a convex portion is formed on the other In the flow path facility, by using bolts and nuts screwed to the flow path facility repair block bodies that are adjacent to each other in the circumferential direction in both circumferential direction end faces of each flow path facility repair block body, The short tubular bodies are connected to each other, and the short tubular bodies are connected in the longitudinal direction to form a continuous tubular body having an outer diameter smaller than the inner diameter of the flow passage in the flow passage facility. And grout material in the clearance space formed between the Flow path facility repair method which is characterized in that entry. 7. The connection between the short pipes adjacent to each other in the lengthwise direction of the flow path facility is such that a concave portion or a convex portion formed on the outer surface plate of the block body for repairing the flow path facility constituting each short pipe body. After fitting and positioning the convex portion or the concave portion formed on the outer surface plate of the flow path facility repairing block body constituting the other short pipe body, the both flow path facility repairing block bodies are inserted into these. 7. The method of repairing a flow path facility according to claim 6, wherein the bolt is connected to the bolt by a nut that is screwed onto the bolt. 8. The tightening operation of the nut to the bolt is performed by using a tool that converts the rotational movement of the motor into the reciprocating linear movement of the bar and the reciprocating linear movement of the bar into the rotational movement of the nut. The method for repairing a channel facility according to claim 6 or 7. 9. When connecting the short pipes that are adjacent to each other in the lengthwise direction, the two pipes are connected so that the circumferential connection portions of the block bodies for repairing the flow path facilities forming the short pipes do not overlap in the lengthwise direction. The flow path facility repairing method according to claim 6, 7 or 8, wherein the portions are shifted in the circumferential direction.