JP2000265539A - Pipe line repairing method and equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe line repairing method and equipment capable of repairing the inside of a pipe line while sharing the pipe line. SOLUTION: Spaces among an upstream side main frame 69, a downstream side main frame 95 and a secondary winding concrete layer 2 to be repaired are closed with an expansion member 70 and downstream side cut-off members 96, the inflow of a sewage 3 into a repairing work objective section along the inside of the secondary winding concrete layer 2 is controlled and, at the same time, the sewage 3 is led to a downstream side B from a sewer pipe line upstream side A in the repairing work objective section through a temporary driving channel 114 formed by a raw water transmission space 68 of the upstream side main frame 69, a flexible hose 66 and a raw water transmission space 94 of the downstream side main frame 95. A sheet material 16 is spread on reinforced frame bodies 14 in the repairing work objective section to be cut off, and a back-fill material 115 is placed in a back-fill material casting space 37 to rebuilt the inside of the secondary winding concrete layer 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipeline repair method and equipment.

[0002]

2. Description of the Related Art FIG. 15 shows an example of a sewage pipeline constructed by a shield method. The sewage pipeline supports a ground load by a pipeline body 1 composed of reinforced concrete or steel segments. A secondary wound concrete layer 2 for forming a headrace channel is constructed in the pipeline body 1.

[0003] The secondary wound concrete layer 2 of such a sewer pipe is exposed to an atmosphere containing a gas such as hydrogen sulfide 4, and deterioration such as corrosion 5 occurs over time.

Therefore, in recent years, repair work has been performed on the secondary wound concrete layer 2 of the sewage pipeline.

FIGS. 16 and 17 show an example of a conventional sewage pipe repairing method. This repairing method comprises a long strip-shaped lining material (coating material) 6 made of synthetic resin having acid resistance and base resistance. Is helically laid, for example, along the inner surface of the secondary wound concrete layer 2 and from one end of the sewer pipe to the other end thereof, and is formed between the lining material 6 and the secondary wound concrete layer 2. The backfill material into the void
This is for reconstructing a smooth headrace in the existing pipeline body 1.

At one edge in the width direction of the lining material 6, a projection 7 is formed which extends in the longitudinal direction of the lining material 6 and protrudes toward the inner surface of the secondary concrete layer 2.

[0007] At the widthwise intermediate portion of the lining material 6, there are formed ribs 8, 9 which extend in the longitudinal direction of the lining material 6, protrude toward the inner surface of the secondary rolled concrete layer 2 and are embedded in the backfill material. .

At the other edge in the width direction of the lining material 6, when the lining material 6 extends in the longitudinal direction of the lining material 6 and is spirally laid along the inner surface of the secondary rolled concrete layer 2, the protrusions 7 are provided. And a rib 11 extending in the longitudinal direction of the lining material 6 and projecting from the fitting portion 10 toward the inner surface of the secondary rolled concrete layer 2 and embedded in the backfill material; A lip 12 is formed which extends in the direction and which can abut on the rib 8 adjacent to the projection 7 when the lining material 6 is spirally laid along the inner surface of the secondary wound concrete layer 2.

The lining material 6 may be laid on the inner surface of the secondary rolled concrete layer 2 while a steel reinforcing member 13 extending in the longitudinal direction of the lining material 6 is inserted between the ribs 8 and 9.

[0010]

As described above, when the repair work is performed over the entire inner surface of the secondary wound concrete layer 2, the sewage 3 is prevented from entering the repair target section of the sewage pipeline. There must be.

However, if the upstream end of the repair work section is simply closed, the flow of the sewage 3 is hindered. Therefore, the sewage 3 is bypassed by some means and guided to the downstream side of the repair work section. There is a need.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a pipe repair method and equipment capable of repairing a pipe inner surface while using a sewer pipe.

[0013]

According to a first aspect of the present invention, there is provided a method for repairing a pipeline, wherein an upstream main frame in which a water guide space penetrating in the axial direction of the pipeline is formed. Installed at the upstream end of the section to be repaired, the downstream main frame with the water guide space penetrating in the pipe axis direction is installed at the downstream end of the section to be repaired, and the outer surface of the upstream main frame and the inner surface of the pipe And between the lower part of the outer surface of the downstream main frame and the lower part of the inner surface of the pipeline, respectively, and the hose is used to connect the pipeline downstream end of the upstream main frame and the pipeline upstream end of the downstream main frame. Connected to form a temporary headrace channel that continues from the upstream end to the downstream end of the pipeline repair target section, and arrange annular reinforcing frames in contact with the inner surface of the pipeline at predetermined intervals in the pipeline axis direction. Coating material on the inner edge of the frame With between There and back-filling material hitting 設空 it is stretched in order to be formed, to pouring the back-filling material into the back-filling material hitting 設空 between the.

[0014] In the pipeline repair method according to the second aspect of the present invention, the upstream main frame in which the water guide space penetrating in the pipe axial direction is formed is installed at the upstream end of the section to be repaired. An intermediate main frame having a hollow structure is sequentially installed on the downstream side of the pipeline of the main frame, and a downstream main frame in which a water conveyance space penetrating in the pipeline axis direction is installed at a downstream end of the pipeline repair target section, Between the outer surface of the upstream main frame and the inner surface of the pipeline,
In addition, the space between the lower part of the outer surface of the downstream main frame and the lower part of the inner surface of the pipeline is closed, and a hose is inserted into the middle main frame, and the downstream end of the pipeline of the upstream main frame and the pipeline of the downstream main frame. Connect the flow end with a hose,
After forming a temporary headrace channel extending from the upstream end to the downstream end of the section subject to pipeline repair, annular reinforcing frames in contact with the inner surface of the pipeline are arranged at predetermined intervals in the axial direction of the pipeline, and then the inner edges of adjacent reinforcing frames The covering material is sequentially stretched so as to cover the inner surface of the pipeline in the circumferential direction and form a backfill material placing space, and the backfill material is placed into the backfill material placing space.

According to a third aspect of the present invention, in addition to the configuration of the first or second aspect of the present invention, an arc-shaped dividing member is provided. The reinforcing frame is formed by sequentially fastening in the circumferential direction along the inner surface of the pipe to be repaired.

According to a fourth aspect of the present invention, in addition to the configuration of the first aspect of the present invention, in addition to the configuration of the first aspect of the present invention, a backfill material placing space is provided. When the backfill material is cast on the intermediate material, the formwork attached to the intermediate main frame is brought into contact with the covering material.

According to a fifth aspect of the present invention, there is provided a method of repairing a pipeline, in addition to the configuration of the method of repairing a pipeline according to any one of the first to fourth aspects of the present invention. Prior to the installation of the main frame and the downstream main frame in the pipeline, the inner wall of the pipeline to be repaired is excavated.

According to a sixth aspect of the present invention, in the pipeline repair facility, an upstream main frame having a water guide space disposed in the pipeline to be repaired and penetrating in the axial direction of the pipeline, and the upstream main frame. An annular inflatable member that can be loosely fitted to and press against the inner surface of the pipeline by fluid pressure, an upstream water-stopping member that can abut the upstream-side end surface of the upstream main frame, and an inner surface of the upstream main frame. Mechanism, a downstream sub-frame disposed in a pipeline to be repaired, and a water guide space disposed inside the downstream sub-frame so as to be movable up and down and penetrating in the axial direction of the pipeline. A downstream main frame, a downstream water stopping member provided on the downstream main frame so as to be able to abut on a lower portion of the inner surface of the pipeline, and one end connected to the downstream end of the pipeline of the upstream main frame. And the other end is the upstream end of the pipeline of the downstream main frame. Hose connected to the pipe, an annular reinforcing frame that is in contact with the inner surface of the pipe to be repaired and is arranged at a predetermined interval in the pipe axis direction, A covering material that covers and is stretched so as to form a backfill material placing space.

In the pipeline repair equipment according to claim 7 of the present invention, in addition to the configuration of the pipeline repair equipment according to claim 6 of the present invention, the expansion member can be displaced in the pipe radial direction and upstream. A slide mechanism is provided for supporting the main frame in a watertight manner.

According to the pipeline repair equipment according to claim 8 of the present invention, in addition to the configuration of the pipeline repair equipment according to any one of claims 6 and 7 of the present invention, the upstream main frame and the downstream An intermediate main frame is provided between the side main frame and the hose.

According to a ninth aspect of the present invention, in addition to the configuration of the pipeline repairing equipment according to any one of the sixth to eighth aspects of the present invention, an arc-shaped dividing member is provided. It has a reinforcing frame formed by fastening in order.

In the pipeline repair equipment according to claim 10 of the present invention, in addition to the configuration of the pipeline repair equipment according to any one of claims 8 and 9 of the present invention, an intermediate main frame is provided. An intermediate part sub-frame movable in the direction of the pipeline axis, and a plurality of formwork arranged so as to surround the intermediate part sub-frame in the circumferential direction of the pipeline and capable of being inscribed in a covering material covering the inner surface of the pipeline. Have.

In any one of the pipe repairing methods according to the first to fifth aspects of the present invention and the pipe repairing equipment according to the sixth to tenth aspects, the outer surface of the upstream main frame and the downstream side main frame are provided. Blockage between the outer surface of the frame and the inner surface of the pipeline to be repaired prevents sewage from flowing into the section targeted for repair work along the inner surface of the pipeline, and reduces sewage upstream of the pipeline in the section targeted for repair work. The water is guided to the downstream side of the pipeline in the section to be repaired via a temporary water channel formed by the water guiding space and the hose of the upstream main frame and the water guiding space of the downstream main frame.

In addition, a covering material is stretched on a reinforcing frame disposed in the section of the repair work that has been stopped, and the backing material is filled into a backing material casting space formed between the inner surface of the pipeline and the covering material. Casting material and rebuilding the inner surface of the pipeline.

[0025] The pipe repair method according to claim 2 of the present invention,
Alternatively, in any of the pipeline repair facilities according to claim 8 of the present invention, the hose is inserted through the intermediate main frame disposed between the upstream main frame and the downstream main frame, and the hose is caused by the flow of sewage. To prevent the deformed hose.

[0026] The pipe repair method according to claim 3 of the present invention,
Alternatively, in any of the pipeline repair facilities according to the ninth aspect of the present invention, the reinforcement frame is formed by a plurality of divided members, so that the material can be easily carried into the sewage pipeline.

[0027] The pipe repair method according to claim 4 of the present invention,
Alternatively, in any of the pipeline repair equipment according to claim 10 of the present invention, the form is brought into contact with the covering material to prevent the deformation of the sheet material due to the placement of the backfill material.

In the pipeline repair equipment according to the fifth aspect of the present invention, by reducing the inner wall of the pipeline to be repaired, a reduction in the cross-sectional area of the flow channel due to the repair of the inner surface of the pipeline is avoided. .

In the pipeline repair equipment according to a seventh aspect of the present invention, the expansion member is displaced in the pipe radial direction with respect to the upstream main frame by the slide mechanism, and the pressure contact property of the expansion member against the inner surface of the pipeline is improved. Improve.

[0030]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 14 show an embodiment of the pipeline repair equipment according to the present invention. In the drawings, the same reference numerals as those in FIG. 15 denote the same parts.

The secondary wound concrete layer 2 to which the pipeline repair equipment is applied has a state in which a deteriorated portion of the inner surface due to corrosion or the like has been cut off, and the inner bottom of the secondary wound concrete layer 2 has A plurality of rail fixing frames 33 are arranged at predetermined intervals in the axial direction of the sewer pipeline.

Each rail fixing frame 33 is provided with left and right rails 32 extending in the axial direction of the sewer pipe line so as to be inclined so that the head faces the center of the secondary rolled concrete layer 2 when viewed in the axial direction of the sewer pipe line. Attached to.

The pipeline repair equipment includes an upstream water stoppage means 64 disposed on the upstream side A of the sewage pipeline targeted for repair work, and a downstream side disposed on the downstream B side of the sewage pipeline targeted for repair work. A water stopping means 65 and a flexible hose 66 for flowing the sewage 3 from the upstream water stopping means 64 to the downstream water stopping means 65 without touching the inner surface of the secondary wound concrete layer 2.
A covering material supporting means 67 disposed between the water stopping means 64 and 65 and through which the flexible hose 66 is inserted;
An annular reinforcing frame 14 which is in contact with the inner surface of the next-wound concrete layer 2 and is arranged at a predetermined interval in the axial direction of the sewer pipe; And a sheet material (covering material) 16 which is stretched so as to cover and form a backfill material placing space 37.

Of these, the upstream water stopping means 64, the downstream water stopping means 65, and the covering material supporting means 67 are mechanical devices that are used repeatedly, and the reinforcing frame 14 and the sheet material 16 are It is a material for reconstructing the next rolled concrete layer 2.

The upstream water stopping means 64 is disposed in the secondary wound concrete layer 2 to be repaired and has a cylindrical upstream main frame 69 in which a water guide space 68 penetrating in the axial direction of the sewer pipe is formed. An annular inflatable member 70 that can be loosely fitted to the upstream main frame 69 and pressed against the inner surface of the secondary wound concrete layer 2 by fluid pressure, and the expandable member 70 can be displaced in the axial direction of the sewer pipe and A sliding mechanism 71 for supporting the main frame 69 in a watertight manner, a lid-shaped upstream water-stopping member 72 that can abut on an end surface of the upstream main frame 69 on the downstream A side of the drain pipe, and an upstream main frame. 69
And a lock mechanism 73 capable of restraining the inner surface of the secondary wound concrete layer 2.

When viewed from the side, the upstream main frame 69 is bent in a substantially S-shape at an intermediate portion, and the upstream main frame 69 has a portion near the downstream B side end of the sewer pipe downstream with respect to the axis near the upstream A side end of the sewer pipe. It has a shape in which the axis is deflected downward substantially parallel.

The brackets 74 provided on the left and right sides of the front and rear ends of the upstream main frame 69 in the axial direction of the sewage pipe are provided with downwardly protruding brackets 74, which can be rolled on the rails 32.
A wheel frame 74a pivotally supporting two of the wheels 5 is connected by pins.

The expansion member 70 is a ring-shaped hollow structure having a high elasticity, such as a synthetic rubber resin.
A hydraulic pressure (not shown) mounted on the upstream main frame 69 is provided from a hydraulic unit (not shown) mounted on the downstream end of the upstream main frame 69 on the downstream B side.

The slide mechanism 71 is connected to the upstream main frame 6.
9, a casing 76 having a hollow structure having an opening extending in the circumferential direction on the outer surface thereof, the casing 76 having a hollow structure attached to the portion near the upstream A side of the sewage pipe, and provided inside the casing 76 along the front and rear edges of the opening. A liner member 77, a slide ring 78 that is loosely fitted to the upstream main frame 69 and slidably contacts the two liner members 77, and a support ring 79 that is fitted to the outer edge of the slide ring 78. And a hydraulic jack 80 for raising and lowering the support ring 79 with respect to the upstream main frame 69.

The expansion member 70 is fitted on the support ring 79 so that the expansion member 70 can be displaced together with the support ring 79 in the direction of the sewer pipe system.

The hydraulic jack 80 has a housing connected to the lower part of the outer surface of the upstream main frame 69 with a pin, and a rod connected to the lower part of the support ring 79 with a pin.

The hydraulic jack 80 includes an expansion member 70.
Similarly to the above, operating hydraulic pressure is applied from a hydraulic unit mounted on the upstream main frame 69. When the hydraulic jack 80 is operated so that the rod is housed in the housing, the support ring 79 and the expansion ring are expanded. When the member 70 is raised with respect to the upstream main frame 69 and the rod is operated so as to protrude from the housing, the support ring 79 and the expansion member 70 are lowered with respect to the upstream main frame 69.

Around the peripheral portion of the downstream side B of the downstream side of the sewage line of the upstream water stopping member 72, the upstream side of the sewage line A of the main frame 69 is provided.
A seal member 81 that can be in close contact with the side end surface is mounted over the entire circumference.

A hydraulic jack 8 is attached to a bracket 82 fixed to the outer edge of the upstream water-stop member 72 at substantially equal intervals in the circumferential direction.
The rod of No. 3 is pin-connected, and the housing of the hydraulic jack 83 is pin-connected to a bracket 84 fixed to a casing 76.

The hydraulic jack 83 includes an expansion member 70.
Similarly to the above, the operating hydraulic pressure is applied from a hydraulic unit mounted on the upstream main frame 69. When the hydraulic jack 83 is operated so that the rod projects from the housing, the upstream water stopping member 72 Is the upstream main frame 6
When the hydraulic jack 83 is moved away from the end face of the pipe 9 to the upstream A side of the sewer pipe and the hydraulic jack 83 is operated so that the rod is housed in the housing, the seal member 81 comes into close contact with the end face of the upstream main frame 69.

The lock mechanism 73 includes an upstream main frame 69.
And a pedestal 85 which is externally fitted and fixed to a portion of the substantially S-shaped bent portion near the sewage pipe upstream A side, and is disposed on the outer surface of the pedestal 85 at substantially equal intervals in the circumferential direction, and is downstream B from the sewage pipe upstream A side. A wedge-shaped first block 86 whose dimension in the sewage pipeline radial direction gradually decreases toward the side, and a surface of the first block 86 facing the secondary winding concrete layer 2 in the axial direction of the sewage pipeline. And a wedge-shaped second block 87 slidably in contact with the sewage pipe and gradually increasing in size in the radial direction of the sewage pipe from the upstream A side to the downstream B side. A guide member 90 having a pin 88 projecting substantially parallel to a tangent to the wound concrete layer 2, a long hole 89 in which the pin 88 is inserted and extending in a radial direction of the sewer pipe, and fixed to a gantry 85; The first block 86 with respect to the upstream main frame 69 It is constituted by a hydraulic jack 91 to move back and forth to the sewer pipe axial direction.

The hydraulic jack 91 has a housing 8
5 and a rod is attached to the first block 86
Is pin-connected.

The hydraulic jack 91 has an expansion member 70.
Similarly to the above, operating hydraulic pressure is applied from a hydraulic unit mounted on the upstream side main frame 69. When the hydraulic jack 91 is operated so that the rod projects from the housing, the two blocks 86, 87 Second due to wedge effect
Is pressed against the inner surface of the secondary concrete layer 2 and the rod is actuated to be housed in the housing, the wedge effect of both blocks 86 and 87 is eliminated and the secondary concrete layer 2 is released. The pressing of the second block 87 against the inner surface is released.

The surface of the second block 87 to be pressed against the secondary rolled concrete layer 2 is formed in an uneven shape to increase the restraining force on the inner surface of the secondary rolled concrete layer 2.

Further, on the outer surface of the end of the upstream main frame 69 on the upstream side of the sewage pipe A, a wire rope (not shown) drawn out from a winch installed in a shaft installed on the sewage pipe upstream of the section A for repair work. ) Can lock eye plate 92
Is fixed.

The downstream water stopping means 65 is disposed in the secondary winding concrete layer 2 to be repaired, and is formed in a gate-shaped downstream sub-frame 93 when viewed in the axial direction of the sewer pipe. A downstream main frame 95 having a water guide space 94 disposed inside the frame 93 and penetrating in the axial direction of the sewage pipeline, and a downstream main frame 95 so as to be able to contact the lower part of the inner surface of the secondary rolled concrete layer 2. A downstream water stop member 96 provided on the frame 95 and a hydraulic jack 97 for moving the downstream water stop member 96 and the downstream main frame 95 up and down with respect to the downstream sub frame 93 are provided.

The downstream sub-frame 93 includes a beam member 98 extending in the axial direction of the sewer pipe, a leg member 99 attached to the front and rear ends of the beam member 98 and extending left and right, and a lower end of the leg member 99. And a wheel 100 pivotally supported so as to be able to roll on the rail 32.

The downstream water stop member 96 is attached to a lower portion of the outer surface of the downstream main frame 95 so as to maintain watertightness, and is fixed to the lower edge of the water stop plate 101. And a support seat 102 extending in the circumferential direction of the secondary concrete layer 2, and a portion fitted along the support seat 102 and protruding toward the downstream B side of the sewer pipe line, at a portion closer to the inner surface lower side of the secondary concrete layer 2. And a sealing member 104 having a lip 103 that can be in contact therewith.

The upper and lower edges of the downstream water stopping member 96 and 2
Between the inner surface of the next rolled concrete layer 2 and the inner surface of the concrete layer 2, there is always formed a gap through which materials can be carried from the downstream B side to the upstream A side and through which workers can pass.

When the downstream water blocking member 96 comes into contact with the inner surface of the secondary rolled concrete layer 2, the water blocking plate 101 and the support seat 102 interfere with the rail water stopping device 105 mounted on the rail 32. Is formed to avoid the above.

The hydraulic jack 97 has a housing connected to the downstream side sub-frame 93 with a pin, and a rod connected to the water stopping plate 101 of the downstream water stopping member 96 with a pin.

The hydraulic jack 97 is supplied with operating hydraulic pressure from a hydraulic unit (not shown) mounted on the downstream sub-frame 93.
Is operated so that the rod projects from the housing, the downstream main frame 95 and the downstream water stopping member 96 are lowered, and the sealing member 104 is
When the rod is pressed into the inner surface and the rod is operated to be housed in the housing, the downstream main frame 95 and the downstream water stopping member 96 are raised, and the secondary wound concrete layer 2 is raised.
Of the seal member 104 is released.

When the sewage 3 accumulates on the downstream B side of the downstream water stopping member 96 in a state where the lip 103 of the sealing member 104 is in contact with the inner surface of the secondary wound concrete layer 2, the support seat of the sealing member 104 is formed. The water pressure of the sewage 3 acts on the gap between the fitting portion to the lip 102 and the lip 103, so that the lip 103 is effectively pressed against the inner surface of the secondary concrete layer 2.

The rail water stop device 105 is applicable to the upstream water stop means 64 described above.
2 from the left and right sides thereof and the rail 3
2 and a pair of water-blocking blocks 106 having a cross-sectional shape extending from the road surface to the inner surface of the secondary rolled concrete layer 2.
And a sealing member 107 interposed between the rail 32 fitting portion of the water blocking block 106 and the side of the rail 32, and between the bottom of the water blocking block 106 and the inner surface of the secondary rolled concrete layer 2. , And a bolt 108 for fastening the left and right water blocking blocks 106 to each other.

By mounting the rail water stop 105 on the rail 32, the expansion member 7 of the upstream water stop means 64 is provided.
0, or the sealing member 104 of the downstream water stopping means 65 is the inner surface of the secondary wound concrete layer 2 and the rail water stopping device 10.
5, the leakage of the sewage 3 from the sewage pipeline upstream A side or the downstream B side to the repair target section is effectively suppressed.

The flexible hose 66 is formed of a synthetic resin material or the like so as to have flexibility and reduce weight.

One end of the flexible hose 66 is connected to the downstream side B of the upstream main frame 69 of the upstream water stopping means 64.
The other end of the flexible hose 66 is externally fitted to an end of the downstream main frame 95 of the downstream water stopping means 65 on the downstream A side of the drain pipe.

The outer surface of the downstream end of the upstream main frame 69 on the downstream B side of the sewer pipe and the outer surface of the upstream end of the downstream main frame 95 on the downstream A side of the drain pipe are provided with flexible hoses 66 to be externally fitted thereto. A hoop member 109 extending in the circumferential direction is fixed in order to prevent falling off.

Further, a fixing tool 110 which can surround the flexible hose 66 externally fitted to the upstream main frame 69 or the downstream main frame 95 so as to cover the hoop member 109 so as to be fitted to the hoop member 109 is provided. It is provided for each of the water stopping means 64 and 65.

The fixture 110 is connected to the upstream main frame 6.
9 or a flexible hose 66 externally fitted to the downstream main frame 95, which is sequentially arranged in the circumferential direction so that both ends thereof are the upstream main frame 69 and the downstream main frame 9.
5. A curved band-shaped pressing member 111 bent radially outward.
And a bolt 112 and a nut 113 for fastening the bent portions of the adjacent pressing members 111 to each other.

The reinforcing frame 14 is formed of an arc-shaped divided member 17.
In the circumferential direction along the inner surface of the secondary wound concrete layer 2 in order.

The reinforcing frame 14 adjacent in the axial direction of the sewer pipe includes a plurality of connecting members 1 extending in the axial direction of the sewer pipe.
Fastened alternately by 5a, 15b.

The sheet material 16 is made of a synthetic resin such as polypropylene having acid resistance and base resistance. The sheet material 16 projects toward the inner surface of the secondary rolled concrete layer 2. A large number of projections (not shown) embedded in the backfill material are formed.

The dimensions of the sheet material 16 are set based on the distance between the adjacent reinforcing frames 14 and the inner peripheral edge length of the reinforcing frames 14.

One edge of the sheet material 16 is located at the
Is attached so as to cover the entire inner edge of the reinforcing frame 14 located on the side, and the other edge of the sheet material 16 is already attached to each inner edge of the reinforcing frame 14 located on the downstream B side of the sewer pipe. Is mounted so as to overlap one edge portion of another sheet material 16, and is back-filled by the inner surface of the secondary rolled concrete layer 2, the sheet material 16, and the reinforcing frame 14 to which the sheet material 16 is attached. A material placing space 37 is formed.

The portion where the sheet material 16 is attached to the reinforcing frame 14 is filled with a sealant.
The winding start end and the winding end end of the secondary rolled concrete layer 2 are thermally welded to each other to maintain watertightness.

The covering material support means 67 is provided in the secondary wound concrete layer 2 to be repaired and is provided with an intermediate main frame 38 extending in the axial direction of the sewage pipe, and a sewage pipe with respect to the intermediate main frame 38. A gate-shaped intermediate sub-frame 39 which is movable in the axial direction, and an upper die which is located above the intermediate sub-frame 39 and is in surface contact with the sheet material 16 which covers the upper inner surface of the secondary concrete layer 2 A frame 40, a hydraulic jack (actuator) 41 for moving the upper form 40 up and down with respect to the intermediate sub-frame 39 in a direction approaching and separating from the inner surface of the secondary rolled concrete layer 2; A lower formwork 42 located on the lower side and capable of making surface contact with the sheet material 16 covering the lower inner surface of the secondary rolled concrete layer 2;
Hydraulic jack (actuator) 4 that moves up and down in the direction approaching and separating from the inner surface of the secondary wound concrete layer 2
3, right and left side molds 44 located on the left and right sides of the intermediate subframe 39 and capable of making surface contact with the sheet material 16 covering the inner side of the secondary rolled concrete layer 2; Hydraulic jacks (actuators) 45 and 46 for moving the frame 44 toward and away from the inner surface of the secondary wound concrete layer 2 with respect to the intermediate sub-frame 39 are provided.

The intermediate main frame 38 is fixed to the curved plate-like lower component 47 having a convex curved surface located on the lower side when viewed in the direction of the sewer pipe axis, and to both left and right edges of the lower component 47. And a flange 48 extending along the entire length of the lower component 47 in the axial direction of the sewer pipe, and an upper component 49 in the form of a curved plate having a convex curved surface positioned upward when viewed in the axial direction of the sewer pipe.
A flat bar-shaped step 49a fixed to the upper surface of the upper component member 49 and extending over the entire length of the upper component member 49 in the axial direction of the sewage pipe, and left and right edges of the upper component member 49 so as to overlap the flange 48. A guide rail 50 fixed to the portion and extending over the entire length of the upper component member 49 in the axial direction of the sewer pipe, and a bracket 51 provided on the lower component 47 at the front end and the rear end in the axial direction of the sewer pipe.
A wheel frame 51a pin-connected to the
Wheels 52 pivoted one by one and rollable on rails 32
And is constituted by.

The intermediate main frame 38 becomes substantially cylindrical when the flange 48 of the lower component 47 and the guide rail 50 of the upper component 49 are bolted to each other.

The intermediate sub-frame 39 is a rectangular frame-shaped upper component 53 located immediately above the intermediate main frame 38.
An intermediate component 55 extending downwardly from the four corners of the upper component 53 and rotatably supported at its lower end on the guide rail 50; And a lower component 56 extending downward from the side surface of the lower end.

The upper formwork 40 has a convex curved surface located on the upper side when viewed in the axial direction of the sewage pipeline, and has the secondary winding concrete layer 2.
Support plate 5 which can make surface contact with sheet material 16 which covers the upper inner surface of
7 and ribs 58 fixed to both front and rear ends of the concave curved surface of the support plate 57 in the axial direction of the sewer pipe.

Between the lower surface of the upper formwork 40 and the upper component member 49 of the intermediate sub-frame 39 described above, materials are carried from the downstream B side to the upstream A side of the sewage pipe, and the traffic of workers. Is always formed.

The hydraulic jack 41 has a housing attached to the upper component member 53 of the intermediate sub-frame 39, and a rod connected to the rib 58 of the upper mold frame 40 with a pin.

The lower formwork 42 has a convex curved surface located on the lower side when viewed in the axial direction of the sewer pipe line, and
Support plate 5 which can make surface contact with sheet material 16 which covers the upper inner surface of
9 and ribs 60 fixed to both front and rear ends of the concave curved surface of the support plate 59 in the axial direction of the sewer pipe.

The support plate 59 and the rib 60 are formed with a notch S for avoiding interference with the rail 32 when the support plate 59 comes into surface contact with the sheet material 16.

The hydraulic jack 43 has a housing connected to the lower constituent member 56 of the intermediate sub-frame 39 with a pin, and a rod connected to the rib 60 of the lower formwork 42 with a pin.

The side formwork 44 has a convex curved surface located on the left or right side when viewed in the axial direction of the sewerage line, and has a surface contact with the sheet material 16 covering the inner side of the secondary rolled concrete layer 2. It is constituted by a plate 61 and a rib 62 fixed to the concave curved surface of the support plate 61.

The hydraulic jack 45 is mounted on the upper end of an intermediate member 55 whose housing is located on the left or right side of the intermediate sub-frame 39 when viewed in the direction of the sewer pipe axis. A pin is connected to a portion near the upper end of the rib 62 of the side mold 44 located on the left or right side when viewed in the direction.

The hydraulic jack 46 is connected to the rib 60 of the lower mold 42 by a pin at a portion closer to the left or right of the rib 60, and the rod has a rod positioned on the left or right as viewed in the axial direction of the sewer pipe. A pin is connected to a portion of the rib 62 near the lower end.

The dimension of the support plates 57, 59, 61 of the upper mold frame 40, the lower mold frame 42, and the side mold frame 44 in the axial direction of the sewer pipe is stretched between the adjacent reinforcing frames 14. The size of the sheet material 16 is set to be larger than the dimension in the direction of the axis of the sewer pipe.

Further, the hydraulic jacks 41, 43, 45, 4
6, hydraulic pressure is applied from the hydraulic unit mounted on the upstream main frame 69 or the hydraulic unit mounted on the downstream sub-frame 93, as described above. When the rods 45 and 46 are operated so that the rods protrude from the housing, the upper formwork 40, the lower formwork 42, and the side formwork 44 are moved to the sheet material 16 covering the inner surface of the secondary concrete layer 2. When the rod is moved to a position where surface contact can be made and the rod is operated to be housed in the housing, the upper mold 40, the lower mold 42, and the side mold 44 approach the intermediate sub-frame 39. Move to position.

In addition, the intermediate main frame 38 of the coating material supporting means 67 is connected to the intermediate main frame 38 of the other coating material supporting means 67 via the connecting member 63. It has become.

When repairing the sewage pipeline using the pipeline repair equipment shown in FIGS. 1 to 14, the upstream water stopping means 6
4 is divided into an upstream main frame 69, an expansion member 70, a slide mechanism 71, an upstream water stopping member 72, a lock mechanism 73, and a wheel frame 74a. Each of these members is extended from the ground surface to a sewer pipe. And the upstream water stopping means 64 is assembled at the bottom of the shaft.

When the assembly of the upstream water stopping means 64 is completed, the wheel 75 is mounted on the rail 32, and the upstream water stopping means 64 is moved to the most upstream end of a predetermined section of the sewage pipe to be repaired. Move.

At this time, the vertical position of the support ring 79 with respect to the upstream main frame 69 is appropriately adjusted by the hydraulic jack 80 to prevent contact between the outer surface of the expansion member 70 and the secondary concrete layer 2.

Also, according to the plan, the rail water stop 105 is attached to a portion of the rail 32 located immediately below the expansion member 70.

Next, the hydraulic jack 91 is operated so that the rod projects from the housing, and the two blocks 86,
The second block 87 is pressed against the inner surface of the secondary wrapped concrete layer 2 by the wedge effect of 87, and the upstream main frame 69 is restrained against the secondary wrapped concrete layer 2.

The intermediate main frame 38 of the covering material supporting means 67 is divided into a lower component 47, an upper component 49 and a wheel frame 51a, and the intermediate sub frame 39 is divided into an upper component 53 and an intermediate component. 55, and lower component member 5
6 and each of these members, the upper formwork 40, the lower formwork 42, and the side formwork 44 are carried into the shaft,
The covering material support means 67 is assembled at the bottom of the shaft.

When the assembling of the covering material supporting means 67 is completed, the wheels 52 are mounted on the rails 32, and the intermediate main frame 38 is moved along the rails 32 to the section where the backfill material is to be placed.

By repeating the above operation, a plurality of coating material supporting means 67 are arranged in series on the downstream side B of the upstream water stopping means 64 in the sewer pipe.

At this time, the flexible hose 66 is mounted in the wound or folded state in the intermediate main frame 38 of the covering material support means 67 which is finally carried into the shaft.

Further, the downstream water stopping means 65 is connected to the downstream sub-frame 93, the downstream main frame 95, and the downstream water stopping member 9.
6. Disassemble into the hydraulic jack 97 and the wheel 100, carry these members into the above-mentioned shaft, and assemble the downstream water stopping means 65 at the bottom of the shaft.

When the assembly of the downstream water stopping means 65 is completed, the wheel 100 is mounted on the rail 32, and the downstream water stopping means 65 is moved to the most downstream end of a predetermined section of the sewage pipe to be repaired. Let it.

Upstream water stopping means 64, covering material supporting means 6
7 and when the downstream water stop means 65 is installed at a predetermined position, the expansion member 70 is mounted on the upstream main frame 69 inside the expansion member 70 such that the expansion member 70 presses against the inner surface of the secondary rolled concrete layer 2. Hydraulic pressure from the hydraulic unit of
In addition, the hydraulic jack 83 is provided so that the seal member 81 of the upstream water stopping member 72 is in close contact with the end surface of the upstream main frame 69.
Is operated, and the downstream B of the sewer pipe line
The flow of sewage 3 to the side is temporarily interrupted.

After the sewage 3 retreats to the downstream B side of the sewer pipe in the section to be repaired, the rail water stop 105 is attached to a portion of the rail 32 located immediately below the downstream water stop member 96.
And the hydraulic jack 97 is operated so that the seal member 104 is pressed against the inner surface of the secondary rolled concrete layer 2 and the rail water stop 105.

During this time, the intermediate main frame 3
8, the flexible hose 66 is inserted into the middle main frame 38 of the other covering material supporting means 67 adjacent to the upstream A side of the sewage pipeline, and is developed.
9 and the downstream side main frame 95
Of the temporary headrace 11 by connecting the ends of the
4 is formed.

Further, when the hydraulic jack 83 is actuated to separate the upstream water-stop member 72 from the upstream main frame 69, the sewage 3 stagnant on the sewage pipe upstream A side of the section to be repaired is removed. Water guide space 68 of the upstream main frame 69,
After passing through the flexible hose 66 sequentially inserted into the intermediate main frame 38 of each covering material supporting means 67 and the temporary water conduit 114 formed by the water conduction space 94 of the downstream main frame 95, the drainage pipe for the section to be repaired It flows to the downstream side B of the road.

Further, the secondary rolled concrete layer 2 in the section to be repaired is washed with water, and the turbid water generated by the washing is discharged to the downstream B side of the downstream water stopping means 65 using a submersible pump or the like. I do.

As described above, the expansion member 70 is pressed against the inner surface of the secondary wound concrete layer 2, and the sewage 3 flows from the upstream side A of the sewage pipeline to the repair target section along the inner surface of the secondary wound concrete layer 2. The inflow is suppressed, and the downstream water stopping member 96 is brought into contact with the inner surface of the secondary wound concrete layer 2, and the sewage 3 is repaired along the inner surface of the secondary wound concrete layer 2 from the downstream side B of the sewer pipe. In addition to suppressing backflow to the construction target section, the sewage 3 is moved from the upstream A side to the downstream B side of the sewage pipe of the repair target section, the water guide space 68 of the upstream main frame 69, the flexible hose 66, and the downstream main part. Since the water is guided through the temporary water conveyance channel 114 formed by the water conveyance space 94 of the frame 95, it is possible to prevent the flow of the sewage 3 into the section of the sewage pipeline to be repaired without obstructing the flow of the sewage 3.

Further, the expansion member 7 is moved by the slide mechanism 71.
Since 0 is displaced in the sewer pipe radial direction, the expansion member 70 is effectively pressed against the inner surface of the secondary wound concrete layer 2.

Further, since the upstream water stopping member 72 is brought into contact with the end face of the upstream main frame 69 on the upstream A side of the sewage pipe, the inflow of the sewage 3 into the water guide space 68 of the upstream main frame 69 is suppressed. The work of attaching and detaching the flexible hose 66 to and from the upstream main frame 69 and the downstream main frame 95 can be easily performed.

In addition, the first block 86 of the lock mechanism 73 has a wedge shape in which the size in the radial direction of the sewer pipe gradually decreases from the upstream A side to the downstream B side of the sewer pipe. Since the second block 87 of 73 has a wedge shape in which the size in the radial direction of the sewer pipe gradually increases from the upstream A side to the downstream B side of the sewer pipe, rainwater or the like suddenly flows into the sewer pipe. When the upstream water stopping means 64 is urged toward the downstream B side of the sewer pipe line by the
By the wedge effect of 7, the pressing force of the second block 87 against the inner surface of the secondary rolled concrete layer 2 is increased, and the retreat of the upstream water stopping means 64 to the downstream B side of the sewer pipe is prevented.

Further, since the flexible hose 66 is inserted through the intermediate main frame 38 of the covering member supporting means 67 disposed between the upstream main frame 69 and the downstream main frame 95, the flexible hose 66 caused by the flow of the sewage 3 is provided. Hose 66
Can be prevented from being deformed.

Further, a hoop member 109 is provided on the outer surface of the downstream main frame 69 at the downstream B-side end of the upstream main frame 69 and at the downstream end of the downstream main frame 95 at the upstream A-side of the sewer pipe. Flexible hose 66 which is fitted to the upstream main frame 69 and the downstream main frame 95 so as to cover
Hoop member 1 by means of a fixture 110 surrounding the
09, it is possible to prevent the flexible hose 66 from falling off from the upstream main frame 69 and the downstream main frame 95.

After the cleaning and drainage of the section to be repaired is completed, the dividing member 17 for forming the reinforcing frame 14 and the connecting members 15a and 15b for mutually fastening the reinforcing frame 14 from the shaft described above. And a material such as a sheet material 16 to be stretched with respect to the reinforcing frame 14 is carried into the sewer pipe.

At this time, between the left and right upper edges of the downstream water stopping member 96 and the inner surface of the secondary rolled concrete layer 2 and between the lower surface of the upper formwork 40 and the upper component member 49 of the intermediate subframe 39. Since a gap is always formed between them, it is possible to easily carry in the material from the downstream B side of the sewage pipeline to the upstream A side and to easily pass the workers.

Further, the divided members 17 are sequentially fastened to form an annular reinforcing frame 14 along the inner surface of the secondary wound concrete layer 2 and surrounding the rail 32, and the reinforcing frame adjacent to the sewer pipe axial direction. 14, a plurality of connecting members 15
a and 15b are alternately fastened.

Further, the rails 32 are supported by the respective reinforcing frames 14, the existing rail fixing frame 33 is removed, and the sheet material 16 is placed on the inner edge portion of the adjacent predetermined reinforcing frame 14.
The secondary rolled concrete layer 2 is stretched so as to cover the concrete layer 2 in the circumferential direction and form a backfill material placing space 37.

Next, the predetermined sheet material 16 stretched between the reinforcing frames 14 on which the backfill material 115 is to be cast, the upper formwork 40, the lower formwork 42, and the side formwork 44 face each other. Thus, the intermediate part sub-frame 39 is moved with respect to the intermediate part main frame 38.

In this state, each of the hydraulic jacks 41, 43,
The rods 45 and 46 are projected outward from the housing to bring the support plates 57, 59 and 61 of the upper formwork 40, the lower formwork 42 and the side formwork 44 into surface contact with the sheet material 16 described above. After that, a backing material casting pipe is inserted into a working hole previously drilled in a predetermined divided member 17 constituting the reinforcing frame 14,
The backfill 115 is placed in the backfill placement space 37.

At this time, in the notch S of the lower mold frame 42, a filling material closely contacting the rail 32 and the portion of the sheet material 16 near the rail 32 is interposed as necessary.

Thus, the reinforcing frame 14 and the connecting member 1
5a and 15b are backfill material placing spaces 37 as repair materials for the secondary wound concrete layer 2 together with the backfill material 115.
And the secondary rolled concrete layer 2 is reinforced.

Since the deteriorated portion of the secondary winding concrete layer 2 is scraped off to increase the diameter of the sewage pipeline, it is possible to avoid a reduction in the sectional area of the sewage pipeline due to repair work.

Further, in consideration of the reinforcing effect of the reinforcing frame 14 and the connecting members 15a and 15b in the repaired portion of the secondary rolled concrete layer 2, the thickness of the repaired portion of the secondary rolled concrete layer 2 is reduced. It is also possible to increase the cross-sectional area of the water pipe.

When the backfill material 115 is solidified, the rods of the hydraulic jacks 41, 43, 45, and 46 are pulled into the housing, and the support plates of the upper mold frame 40, the lower mold frame 42, and the side mold frame 44 are pulled. 57, 59, 61, the backing material 115
A predetermined sheet material 16 stretched between the reinforcing frames 14 on which the backfill material 115 is to be placed, and the upper mold frame 40, the lower mold frame 42, and The middle main frame 3 is positioned so that the side
8, the intermediate sub-frame 39 is moved.

As described above, the upper mold frame 4 movable with respect to the intermediate main frame 38 together with the intermediate sub frame 39 is provided.
0, the lower mold 42 and the side mold 44 are
The sheet material 16 covering the concrete secondary winding concrete layer 2 to be repaired by 1, 43, 45, 46
, The deformation of the sheet material 16 at the time of placing the backfill material 115 can be prevented.

Further, since the intermediate sub-frame 39 can be moved in the axial direction of the sewer pipe with respect to the intermediate main frame 38, the work of rearranging the upper mold 40, the lower mold 42, and the side mold 44 can be easily performed. Can be done.

Further, since the upper component member 49 of the intermediate main frame 38 is provided with a step 49a over its entire length, the worker can use the step 49a as a scaffold to assemble the reinforcing frame 14 or to stretch the sheet material 16. Installation work can be performed easily and in a stable state.

The upstream water stopping means 64 and the downstream water stopping means 65
When the repair work of the secondary wound concrete layer 2 is completed between the inflation member 70 and the downstream water stopping member 96
And the upstream water stopping means 64 by the lock mechanism 73
Is released, and the upstream water stopping means 64, the covering material supporting means 67, the downstream water stopping means 65, and the flexible hose 66 are moved to the sewage pipe upstream A side.

Thus, the upstream water stoppage means 64 is located at the most upstream end of the next repair work section next to the sewer pipe, and the downstream water stop means 65 is located at the most upstream end of the next repair work section next to the sewer pipe. While being located at the downstream end, both water stopping means 64, 65
A plurality of covering material supporting means 67 are arranged in series between the two, and the water stoppage for the next section to be repaired in the sewer pipe and the repair of the secondary wound concrete layer 2 are performed by the procedure described above.

As described above, in the pipeline repair equipment shown in FIGS. 1 to 14, the space between the upstream main frame 69 and the downstream main frame 95 and the inner surface of the secondary wound concrete layer 2 to be repaired is expanded. The sewage 3 is blocked by the member 70 and the downstream water stopping member 96 to prevent the sewage 3 from flowing into the repair target section along the inner surface of the secondary wound concrete layer 2, and the sewage pipe upstream of the repair target section. From the A side to the downstream B side, the sewage 3 is transferred to the water guide space 6 of the upstream main frame 69.
8, flexible hose 66, and downstream main frame 9
5, the sheet material 16 is stretched on the reinforcing frame 14 in the repaired section where the water is stopped, and the backing material placing space 37 is guided through the temporary waterway 114 formed by the water guiding space 94 of FIG.
Since the backfill material 115 is cast into the concrete layer 2, the inner surface of the secondary rolled concrete layer 2 can be efficiently repaired while using the sewer pipe.

Note that the pipeline repair method and equipment of the present invention are not limited to the above-described embodiment, but may be modified without departing from the scope of the present invention.

[0129]

As described above, according to the pipeline repair method and equipment of the present invention, various excellent effects as described below can be obtained.

(1) In the pipeline repair method according to any one of the first to fifth aspects of the present invention or the pipeline repair facility according to the sixth to tenth aspects, the outer surface of the upstream main frame and By closing the gap between the outer surface of the downstream main frame and the inner surface of the pipeline to be repaired, it is possible to prevent sewage from flowing into the section targeted for repair work along the inner surface of the pipeline, and the upstream side of the pipeline targeted for repair work. Sewage is guided to the downstream side of the pipeline in the section targeted for repair work through a temporary headrace formed by the water transfer space of the upstream main frame, the hose, and the water transfer space of the downstream main frame, and the repair work is stopped. Since the covering material is stretched on the reinforcing frame body in the target section and the backing material is placed in the backing material placing space formed between the inner surface of the pipeline and the covering material,
It is possible to efficiently repair the inner surface of the pipe while using the sewage pipe.

(2) In the pipeline repair method according to the second aspect of the present invention or the pipeline repair facility according to the eighth aspect of the present invention, the upstream main frame and the downstream main frame are connected to each other. Since the hose is inserted through the intermediate main frame disposed therebetween, deformation of the hose due to the flow of sewage can be prevented.

(3) In any one of the pipeline repair method according to the third aspect of the present invention and the pipeline repair facility according to the ninth aspect of the present invention, the reinforcing frame is formed by a plurality of divided members. Therefore, it is possible to easily carry the material into the sewer pipe.

(4) In any one of the pipeline repair method according to the fourth aspect of the present invention and the pipeline repair facility according to the tenth aspect of the present invention, the form is brought into surface contact with the coating material. The deformation of the sheet material due to the placement of the backfill material can be prevented.

(5) In the pipeline repair method according to the fifth aspect of the present invention, prior to installing the upstream main frame, the intermediate main frame, and the downstream main frame in the pipeline,
Since the excavation is performed on the inner wall of the pipeline to be repaired, it is possible to avoid a reduction in the cross-sectional area of the flow channel due to the repair of the inner surface of the pipeline.

(6) In the pipeline repair equipment according to claim 7 of the present invention, since the expansion member is displaced in the pipe radial direction by the slide mechanism, the expansion member is effectively pressed against the inner surface of the pipe. be able to.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing an example of an embodiment of a pipeline repair facility of the present invention.

FIG. 2 is a conceptual diagram showing an upstream water stopping means in FIG. 1;

FIG. 3 is a view taken in the direction of arrows III-III in FIG. 2;

FIG. 4 is a view taken in the direction of arrows IV-IV in FIG. 2;

FIG. 5 is a conceptual diagram showing a downstream water stopping means in FIG. 1;

FIG. 6 is a view taken in the direction of arrows VI-VI in FIG. 5;

FIG. 7 is a view showing a state where a downstream main frame and a downstream water shutoff member in FIG. 6 are raised.

FIG. 8 is a conceptual diagram showing a rail stop device applied to an example of the pipeline repair equipment of the present invention.

FIG. 9 is a conceptual diagram showing a fixture used for connecting a flexible hose to the upstream main frame and the downstream main frame in FIG. 1;

FIG. 10 is an enlarged view showing a fastening state of an end of a pressing member in FIG. 9;

FIG. 11 is a view as viewed in the direction of arrows XI-XI in FIG. 10;

FIG. 12 is a conceptual diagram showing a fastening state of the reinforcing frame and a state in which a sheet material is stretched over the reinforcing frame in FIG. 1;

FIG. 13 is a conceptual diagram showing a coating material supporting means in FIG. 1;

FIG. 14 is a view taken in the direction of arrows XIV-XIV in FIG. 13;

FIG. 15 is a cross-sectional view showing an example of a sewage pipe constructed by a shield method.

FIG. 16 is a conceptual diagram showing an example of a conventional sewage pipe repair method.

FIG. 17 is a sectional view showing a fitted state of the lining material in FIG. 16;

[Explanation of symbols]

 2 Secondary winding concrete layer (pipe) 14 Reinforcement frame 16 Sheet material (covering material) 17 Dividing member 37 Backfill material placing space 38 Intermediate main frame 39 Intermediate subframe 40 Upper formwork 42 Lower formwork 44 Side frame 66 Flexible hose 68 Water guide space 69 Upstream main frame 70 Inflatable member 71 Slide mechanism 72 Upstream water stop member 73 Lock mechanism 93 Downstream sub-frame 94 Water guide space 95 Downstream main frame 96 Downstream water stop member 114 Temporary headrace 115 Backfill material A Upstream of sewer pipe B Downstream of sewer pipe

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takayuki Iwai 2-1, Tsukudocho, Shinjuku-ku, Tokyo Kumagaya Gumi Tokyo Head Office (72) Inventor Sadao Uno 2-1 Tsukudocho, Shinjuku-ku, Tokyo Kumagaya Gumi Tokyo head office (72) Inventor Kenji Kawaguchi 2-1 Tsukudo-cho, Shinjuku-ku, Tokyo Kumagaya Gumi Tokyo head office (72) Inventor Satoshi Matsuda 2-1 Tsukudo-cho, Shinjuku-ku, Tokyo Kumagaya gumi Tokyo headquarters (72) Inventor Shigeo Kitahara 2-1 Tsukudo-cho, Shinjuku-ku, Tokyo Tokyo headquarters, Kumagaya Gumi Co., Ltd. (72) Inventor Shigeo Fujii 11-1 Kitahama-cho, Chita-shi, Aichi Pref. Inside the plant (72) Inventor Koichiro Kuwahara 11-1 Kitahama-cho, Chita-shi, Aichi Pref. Shingo Aichi Prefecture Chita City Kitahama-cho, No. 11 No. 1 Ishikawajima-Harima Heavy Industries Co., Ltd. Aichi factory in the F-term (reference) 2D063 EA08

Claims (10)

[Claims] 1. An upstream main frame in which a water guide space penetrating in the pipe axis direction is formed at an upstream end of a section subject to pipe repair, and a downstream side in which a water guide space penetrating in the pipe axis direction is formed. The main frame is installed at the downstream end of the pipeline repair target section, and the space between the outer surface of the upstream main frame and the inner surface of the pipeline, and the space between the lower outer surface of the downstream main frame and the lower surface of the pipeline are closed, and The downstream end of the pipeline of the side main frame and the upstream end of the pipeline of the downstream main frame are connected by a hose to form a temporary headrace that extends from the upstream end to the downstream end of the pipeline repair target section, After arranging annular reinforcing frames in contact with the inner surface at predetermined intervals in the pipeline axis direction, a covering material is circumferentially applied to the inner edge portion of the adjacent reinforcing frame to cover the inner surface of the pipeline and a backfill material casting space is formed. As well as the backfill material A pipe repair method characterized by placing backfill material in the space. 2. An upstream main frame in which a water guiding space penetrating in the pipe axis direction is formed at an upstream end of a pipeline repair target section, and an intermediate portion of a hollow structure is provided downstream of the upstream main frame in the pipe. The main frame is installed in order, the downstream main frame in which the water guiding space penetrating in the pipe axis direction is formed is installed at the downstream end of the pipeline repair target section, and between the upstream main frame outer surface and the pipe inner surface, In addition, the space between the lower part of the outer surface of the downstream main frame and the lower part of the inner surface of the pipeline is closed, and a hose is inserted into the middle main frame, and the downstream end of the pipeline of the upstream main frame and the pipeline of the downstream main frame. The flow end is connected with a hose to form a temporary headrace channel that extends from the upstream end to the downstream end of the pipeline repair target section, and the annular reinforcing frame that contacts the inner surface of the pipeline is spaced at predetermined intervals in the pipeline axis direction. After placing, on the inner edge of the adjacent reinforcing frame The covering material is stretched in order so as to cover the inner surface of the pipeline in the circumferential direction and a backfill material placing space is formed, and the backfill material is placed into the backfill material placing space. Pipeline repair method. 3. The pipeline repair according to claim 1, wherein the reinforcing frame is formed by sequentially fastening the arc-shaped divided members in the circumferential direction along the inner surface of the pipeline to be repaired. Method. 4. The method according to claim 1, wherein when the backfill material is cast into the backfill material placing space, the formwork attached to the intermediate main frame is brought into contact with the covering material. Pipeline repair method. 5. An upstream main frame, an intermediate main frame,
The pipeline repair method according to any one of claims 1 to 4, wherein an inner wall of the pipeline to be repaired is excavated prior to installation of the downstream main frame in the pipeline. 6. An upstream main frame having a water guide space disposed in a pipeline to be repaired and penetrating in the axial direction of the pipeline, which is loosely fitted to the upstream main frame and pressed against the inner surface of the pipeline by fluid pressure. An annular inflatable member, an upstream water-stopping member capable of abutting on the upstream end surface of the pipeline of the upstream main frame, a lock mechanism capable of restraining the upstream main frame against the inner surface of the pipeline, and repairing A downstream sub-frame disposed in the conduit, a downstream main frame having a water guide space disposed movably up and down inside the downstream sub-frame and penetrating in the conduit axial direction; A downstream water-stopping member provided on the downstream main frame so as to be able to abut on the deviated portion; one end connected to the downstream end of the pipeline of the upstream main frame and the other end upstream of the downstream main frame; The hose connected to the side end and the inner surface of the pipeline to be repaired And an annular reinforcing frame that is disposed at predetermined intervals in the pipeline axis direction, and an inner peripheral portion of an adjacent reinforcing frame is configured to circumferentially cover the inner surface of the pipeline and form a backfill material placing space. And a covering material stretched over the pipe. 7. The pipeline repair facility according to claim 6, further comprising a slide mechanism that supports the expansion member so as to be displaceable in the pipeline radial direction and to maintain watertightness with respect to the upstream main frame. 8. The pipeline repair facility according to claim 6, further comprising an intermediate main frame disposed between the upstream main frame and the downstream main frame and through which a hose can be inserted. . 9. A reinforcing frame body formed by sequentially fastening arc-shaped divided members.
Pipeline repair equipment according to any of the above. 10. An intermediate sub-frame which is movable in the pipeline axis direction with respect to the intermediate main frame, and a covering material which is arranged so as to surround the intermediate sub-frame in the circumferential direction of the pipeline and covers the inner surface of the pipeline. The pipeline repair facility according to claim 8, further comprising a plurality of formwork that can be inscribed in the pipeline.