JP2002228083A - Method for repairing water-running part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the period of a repairing work of a water-running part, and to reduce the cost therefor. SOLUTION: An in-pipe water discharging facility 12 is used for repairing a part A to be repaired. The facility 12 comprises two floats 14 and 15, a sealing means 16, a pressing means 18, and a temporary water passage 20. When repairing the part A, the floats 14 and 15 are positioned substantially around the part A, and float bodies 14a and 15a are sucked to a bottom surface 10a by driving the sealing means 16. The blocked water flow passes through the temporary water passage 20, and flows on the downstream side and is discharged therefrom. When the water flow is blocked and discharged, a part between the float bodies 14a and 15a becomes dry with water discharged therefrom. The part A to be repaired is in this dry condition, and can be easily repaired. When the repairing and curing of the part A are completed, the in-pipe water discharging facility 12 is moved and used for other parts to be repaired.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing a running water point, and more particularly, to a method for repairing a pipe such as an existing sewage pipe line or a newly installed propulsion pipe, where the repair target point exists in flowing water. It is concerned with a method of repairing while ensuring running water in such a case.

[0002]

2. Description of the Related Art In a repair work for an existing sewage pipe with flowing water, a new shield or a propulsion pipe, etc., when it is desired to make a repair target part dry, a sandbag or a block is generally used. And the water around the area to be repaired was removed, and the blocked water was drained downstream using a drainage pump or submersible pump.

[0003] However, such a conventional method for repairing a running water point has the following technical problems.

[0004]

That is, in the repair method employing the water change by the sandbag and the pump, the amount of water is large,
In places with high water volume, it is difficult to completely eliminate water, and even if water can be eliminated, it takes time to stack and remove a large amount of sandbags, and also spends a lot of labor, shortening the construction period. Reduction of construction cost was desired.

The present invention has been made in view of such conventional problems, and an object of the present invention is to provide a method for repairing a flowing water portion, which can shorten the construction period and reduce the construction cost. It is in.

[0006]

In order to achieve the above-mentioned object, the present invention provides a method for repairing existing pipes such as existing sewage pipes and newly constructed propulsion pipes in a case where a repair target location is in running water. In the repair method in the case where it is present, the device has a means for adhering to the bottom surface of the pipeline, floats the running water, and when in close contact with the bottom surface, a pair of floats capable of blocking the running water,
This pair of floats are provided on both sides of the repair target location, using a drainage and drainage facility provided between the floats and having a temporary water channel for transferring the water dammed by the floats from the upstream side to the downstream side. The float was placed in close contact with the bottom surface by the contacting means, and the running water was drained through the temporary water channel, and the vicinity of the repair target location was brought into a dry state.

According to the method for repairing a running water point configured as described above, even if the repaired point is present in flowing water, a pair of floats are installed on both sides of the repaired point by using a drainage draining facility in the pipe. Then, the float is brought into close contact with the bottom surface by means of close contact, the running water is drained through the temporary waterway, and the repair target location is in a dry state, so it does not take much time to stack and remove like sandbags, When moving, the float can easily move by floating.

[0008] The float has a bottom plate having a shape following the bottom shape of the pipeline, and the close contact means drains and removes water through a large number of holes opening in the bottom plate and the holes. A drainage device such as a vacuum pump or a vacuum is provided, and the water between the bottom plate and the bottom surface is drained by driving the drainage device so that the bottom plate can be adsorbed to the bottom surface.

[0009] The pipe drainage switching equipment may be provided with a pressing means such as a jack for pressing the float against the bottom surface.

Further, the present invention provides a method for repairing a pipe such as an existing sewage pipe or a new propulsion pipe, wherein the floating water is floated in the pipe and installed on the bottom of the pipe. A pair of floats capable of blocking the flowing water, sinking / floating means of the float, and a temporary water passage which is provided between the floats and transfers water blocked by the float from an upstream side to a downstream side. And, using a floating equipment in a pipe with a work scaffolding spanned between the floats, the float is installed on the bottom surface below the repair target location by the sinking floating means, and the flowing water is drained through the temporary waterway. Meanwhile, the repair target portion is repaired via the work scaffold.

[0011] According to the method for repairing a running water point configured as described above, when the repair target point is above the pipeline, the float is installed in the pipe and the float is lowered by the sinking and floating means to the bottom surface below the repair target point. And the drainage water can be repaired through the work scaffold while the running water is drained through the temporary waterway.

In this case, when the floating equipment in the pipe floats in flowing water in the pipe and is installed on the bottom of the pipe,
A pair of floats capable of blocking the running water, a floating means for sinking the floats, a temporary water channel which is provided between the floats and transports the water blocked by the floats from the upstream side to the downstream side; Since it is provided with the provided work scaffolding, it can be easily installed by driving the sinking and floating means, and can also be lifted and moved easily.

[0013] The sinking and floating means may be constituted by sinking means for injecting water into the float and means for draining water from inside the float.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIGS. 1 and 2 show a first method of repairing a running water point according to the present invention.
An example is shown.

The repair method shown in FIG. 1 exemplifies a case where the present invention is applied to the repair of an existing drain pipe 10 having a circular cross section and buried underground. In the case of the embodiment, the repair target location A exists in the flowing water in the pipeline 10.

When repairing the portion A to be repaired under such conditions, it is necessary to keep the surrounding area dry. Therefore, in this embodiment, in order to keep such a dry state, the drainage switching equipment 12 in the pipe is used.

The in-pipe water drainage equipment 12 includes a pair of first and second floats 14 and 15 and each of these floats 1 and 2.
4 and 15, a pressing means 18 for each of the floats 14 and 15, and a temporary water channel 20.

A pair of first and second floats 14, 15
Have float bodies 14a and 15a formed in a hollow box shape made of a light-weight and water-blocking material, for example. In a state where the water channel 20 is mounted, the water channel 20 is slightly separated from the bottom surface 10a of the pipe 10 and floats in flowing water.

Each of the float bodies 14a, 15a has a height greater than the water depth, and each of the float bodies 14a, 15a
The bottom plates 14b and 15b on the lower end side of the
a so as to follow the shape, in the case of this embodiment,
It is formed on a curved surface having the same curvature as the bottom surface 10a.

The pipes 1 are provided on the outer peripheral surfaces of the bottom plates 14b and 15b.
Rubber plates 22 that can be elastically deformed to improve the adhesion to the bottom surface 10a are fixedly attached. The close contact means 16 for each of the floats 14 and 15 is provided separately for the first and second floats 14 and 15, and the bottom plates 14b and 15
It is composed of a large number of holes 16a opening on the b-plane, and a drainage device 16b such as a vacuum pump or a vacuum connected to the holes 16a and the hose 16c.

The lower end of each hole 16a is open outward so as to penetrate the rubber plate 22. In the contact means 16 configured as described above, when the drainage device 16b is driven,
Through the hole 16a, the bottom plates 14b, 15b and the bottom surface 10a
The bottom plate 14b, 15b of each of the floats 14, 15 is adsorbed to the bottom surface 10a by the suction force of the drainage device 16.

The pressing means 18 of each of the floats 14, 15 is
One end is fixed to the upper surfaces of the first and second floats 14 and 15, and the other end is constituted by a jack or a telescopic cylinder extending upward and installed so as to reach the ceiling surface of the pipeline 10.

In the case of this embodiment, each float 14, 1
5, a pair of pressing means 18 is disposed so as to be symmetrical with respect to the center of the cross section of the conduit 10. Although these pressing means 18 are not necessarily required in the present invention, each float 1
When the bottom plates 14b and 15b of the floats 14 and 15 are extended and the bottom plates 14b and 15b of the floats 14 and 15 are pressed against the bottom surface 10a when the bottom plates 14b and 15b of the floats 15 and 15 are sucked, the installation state of the floats 14 and 15 is stabilized. Can be changed. The member indicated by reference numeral 21 in FIGS. 1 and 2 is a connecting member provided between the first and second floats 14 and 15.

The temporary water channel 20 is provided between the pair of first and second floats 14 and 15, and the
It transfers the water blocked by 4a and 15a from the upstream side to the downstream side, and has a semicircular cross section. Both ends of the temporary waterway 20 are
a and 15a are fitted and fixed in semicircular holes 14c and 15c which are recessed at the upper ends of the holes 15a and 15a.

The temporary water channel 20 is not limited to a fixed length, but may be, for example, a flexible hose having an adjustable length.

The sectional area of the temporary water channel 20 may be designed according to the flow rate of the water flow. In this case, a small cross-sectional area can be obtained by installing a jet pump in the middle of the water channel so as to increase the flow velocity for transferring to the downstream side.

When repairing a portion A to be repaired existing on the bottom surface 10a of the conduit 10, first, the portion A is substantially centered and the first and second floats 14, 1 are provided on both sides thereof.
5, and the float bodies 14a and 15a are attracted to the bottom surface 10a by the driving of the contact means 16.

In this state, the pressing means 18 is driven to press the float bodies 14a and 15a against the bottom surface 10a, thereby stabilizing the installation state. When the float bodies 14a, 15a are installed in the water flow in this way, the water flow is blocked by one of the float bodies 14a, 15a located on the upstream side of the water flow.

When the water level of the water flow thus blocked rises and reaches the upper side of the float bodies 14a and 15a, a temporary water channel 20 is provided in that portion. After passing through 20, it flows down to the downstream side and is drained.

When the water flow is blocked and drained in this way, the portion between the float main bodies 14a and 15a is in a dry state where water is removed, and during this dry state,
There is a portion A to be repaired, so that this portion can be easily repaired.

When the driving of the pressing means 18 and the contacting means 16 is stopped after the repair and curing of the repair target portion A are completed, the bottom plate 1 of each of the float bodies 14a, 15a is stopped.
4b and 15b float away from the bottom surface 10a,
The in-pipe drainage diversion equipment 12 can be moved and used for repairing other locations.

According to the method for repairing a running water point configured as described above, even if the repaired point A is present in running water, the drainage drainage switching equipment 12 is used to replace the repaired point A. A pair of floats 14 and 15 are installed on both sides, the floats 14 and 15 are brought into close contact with the bottom surface 10a by the contact means 16, and the running water is drained through the temporary water channel 20 to make the repair target location A dry. In this way, stacking and removal do not take much time, and when moving to another place, the float can easily move by floating.

FIG. 3 and FIG. 4 show a second embodiment of the method for repairing a running water point according to the present invention. In addition to omitting, only the characteristic points will be described in detail below.

The embodiment shown in the figure is similar to the above embodiment, and is applied to a case where the present invention is applied to repairing a pipe 10 of an existing sewage pipe buried in the ground having a circular cross section. And
In the case of the present embodiment, the repair target location B exists on the ceiling side in the pipeline 10.

Under such conditions, when repairing the repair target portion B, the in-pipe floating facility 30 is used.

The in-pipe floating facility 30 includes a pair of first and second floats 32, 33, sinking and floating means 34 for each of the floats 32, 33, a temporary water channel 36,
A work platform 38 is provided.

A pair of first and second floats 32, 33
Have float bodies 32a and 33a formed in a hollow box shape made of a lightweight and water-blocking material, and have a temporary water channel 36 and a work channel. With the scaffolding 38 mounted, it floats in flowing water at a slight distance from the bottom surface 10a of the pipeline 10.

Each of the float main bodies 32a, 33a has a height greater than the water depth, and when the float main bodies 32a, 33a are submerged, the water flow can be blocked.
The bottom plates 32b and 33b of a conform to the shape of the bottom surface 10a of the pipeline 10, and in the case of the present embodiment, are formed as curved surfaces having the same curvature as the bottom surface 10a.

Sinking and floating means 34 for each of the floats 32 and 33
Is provided separately for the first and second floats 32, 33, and has an inlet 34a (sinking means) having an on-off valve for injecting water into the float bodies 32a, 33a, and water from the float bodies 32a, 33a. Drainage means 34b to be eliminated
(Floating means). In this case, the injection port 34a (settling means) is set so as to be located in the water flow.

In the levitation means 34 constructed as described above, when the on-off valve is opened and water is injected into each of the float bodies 32a, 33a from the water injection port 34a, the floats 32, 33 sink due to an increase in water load. And bottom plate 32b, 33
It can be laid so that b contacts the bottom surface 10a.

In this state, the drainage means 34b is driven in a state in which the opening / closing valve of the injection port 34a is closed.
When the water in each of the float main bodies 32a, 33a is drained, the bottom plates 32b, 33b are separated from the bottom surface 10a due to a decrease in the water load, and the floats 32, 33 can be floated.

The means for submerging the float bodies 32a, 33a need not be limited to the above-mentioned inlet 34a with an on-off valve, but may be, for example, a means for injecting water into the float bodies 32a, 33a by driving a submersible pump. There may be.

The temporary water channel 36 extends between the pair of first and second floats 32 and 33, and
It transfers the water dammed in 2a and 33a from the upstream side to the downstream side, and has a semicircular cross section. Both ends of the temporary water channel 36 are
a, 33a are fitted and fixed in semicircular holes 32c, 33c formed in the upper ends of the holes.

The temporary water channel 36 is not limited to a fixed length, as in the above embodiment.
For example, it may be a flexible hose having a length adjustable.

The sectional area of the temporary water channel 36 may be designed according to the flow rate of the water flow. In this case, installing a jet pump in the middle of the channel to increase the flow velocity,
Small cross-sectional areas can also be achieved.

The work scaffold 38 is a connecting member 3 made of H steel which is provided between the pair of first and second floats 32 and 33.
8a and an assembled frame scaffold 38b installed on the connecting member 38a.

When repairing a portion B to be repaired existing on the ceiling portion of the pipeline 10, first, the first and second floats 32 and 33 are positioned on both sides of the portion B substantially at the center. The float bodies 32a, 33a are settled on the bottom surface 10a by opening the inlet port 34a of the levitation means 34 and injecting water.

When the float bodies 32a and 33a are installed in the water flow in this manner, the water flow is blocked by one of the float bodies 32a and 33a located on the upstream side of the water flow.

When the water level of the water flow thus blocked rises and reaches the upper side of the float bodies 32a and 33a, a temporary water channel 36 is provided in that portion. After passing through 36, it flows down to the downstream side and is drained.

When the water flow is blocked and drained in this way, the repair target portion B can be easily repaired via the work scaffold 38 without being affected by the water flow.
When the repair and curing of the repair target portion B are completed, the drainage means 34b of the sinking and floating means 34 drains the water, and the bottom plates 32b, 33 of the float main bodies 32a, 33a.
Since b floats away from the bottom surface 10a, the in-pipe floating facility 30 can be moved and used for repairing other locations.

According to the method for repairing a water flow point configured as described above, when the repair target location B is located above the pipeline 10, the floating facility 30 in the pipe is used and the floatation means 34 is used to float. 32 and 33 are installed on the bottom surface 10a below the repair target location B, and the flowing water is supplied to the temporary canal 3.
6, it is possible to efficiently repair the repair target location B, which is a work at a high place, via the work scaffold 38 while draining water.

In this case, the pipe floating equipment 30
Floats in the flowing water in the pipeline 10 and the bottom surface 10 of the pipeline 10
a, a pair of floats 32, 33 capable of blocking the running water, a levitation means 34 for sinking the floats 32, 33, and provided between the floats 32, 33. Since a temporary water channel 36 for transferring the stopped water from the upstream side to the downstream side and a work scaffold 38 provided between the floats 32 and 33 are provided, the sinking and floating means 3 is provided.
The drive or operation of 4 makes it possible to easily perform the installation, and it is also possible to float and move it easily.

In the above embodiment, the case where the present invention is applied to an existing sewer pipe buried underground has been exemplified. However, the present invention is not limited to this, It can also be applied to a pipeline constructed by a propulsion method or a water flow.

Further, the pipe to be repaired is not limited to a circular shape as shown in the embodiment, and may be not only a closed cross section but also a pipe having an open top like a water channel. Good.

[0055]

As described in detail above, according to the method for repairing a water flow point according to the present invention, it is possible to shorten the construction period and reduce the construction cost.

[Brief description of the drawings]

FIG. 1 is an explanatory side view of a construction state showing a first embodiment of a method for repairing a water flow point according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is an explanatory side view of a construction state showing a second embodiment of a method for repairing a water flow point according to the present invention.

FIG. 4 is a front view of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Pipe line 10a Bottom surface 12 In-pipe water diversion device 14,15 Float 16 Adhesion means 18 Pressing means 20 Temporary water path 30 Floating equipment in pipe 32,33 Float 34 Sedimentation floating means 36 Temporary water path 38 Working scaffold

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yuya Kondo 2-15-2 Konan, Minato-ku, Tokyo F-term of Obayashi Gumi Co., Ltd. F-term (reference) 2D063 BA01 EA05 3H025 EA01 EE05

Claims (5)

[Claims] 1. A repair method in a case where a repair target portion is present in running water when repairing a pipe such as an existing sewage pipe or a newly constructed propulsion pipe, wherein the pipe is in close contact with a bottom surface of the pipe. Means, floats the running water, and when in close contact with the bottom surface, a pair of floats that can block the running water, and is provided between the floats, and the water blocked by the float is Using a drainage diversion facility equipped with a temporary waterway to transfer from the upstream side to the downstream side, installing the pair of floats on both sides of the repair target location,
The float is brought into close contact with the bottom surface by the contact means,
A method for repairing a flowing water portion, wherein the flowing water is drained through the temporary water channel to make the vicinity of the repair target portion a dry state. 2. The float has a bottom plate having a shape following the bottom shape of the pipeline, and the close contact means drains water through a large number of holes opening into the bottom plate and the holes. A drain device such as a vacuum pump or a vacuum for removing, wherein the drain device is driven to drain water between the bottom plate and the bottom surface, and the bottom plate is adsorbed to the bottom surface. The method for repairing a running water point as described in 1. 3. The method according to claim 1, wherein the pipe drainage and draining equipment has a pressing means such as a jack for pressing the float against the bottom surface. 4. A method of repairing a pipe such as an existing sewage pipe or a newly constructed propulsion pipe, wherein the floating water is floated in the pipe, A pair of floats capable of damming, a floating means for sinking and floating the float, a temporary waterway which is provided between the floats and transfers water dammed by the float from an upstream side to a downstream side, and the float Using a floating facility in a pipe with a work scaffold interposed therebetween, the float is installed on the bottom surface below the repair target location by the sinking floating means, and the work is performed while draining flowing water through the temporary waterway. A method for repairing a running water point, comprising repairing the repair target point via a scaffold. 5. The method according to claim 4, wherein said sinking and floating means comprises sinking means for injecting water into said float, and means for draining water from inside said float.