JPH11141740A - Method for transferring existing piping in cut and cover tunnel making work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a working efficiency by loading and unloading a pipe body without stopping the construction work of a tunnel and increasing the length of the pipe body to be loaded or unloaded. SOLUTION: Bearing frames 22 are provided at prescribed intervals along through beams 11 below a lining beam 2 provided in the lining pit 1 of a drilled tunnel. The bearing frame 22 comprises column members 20 and a horizontal member 21 and is formed so as to surround an existing piping 13. Above the horizontal member 21, a pair of rails 23 are laid along the entire range of the lining pit 1 in the axial direction of the tunnel. A working carriage 24 is mounted on the rails 23 so as to travel in the lining pit 1. When the existing piping 13 is moved, a pipe body 13b to be removed from the piping 13 is removed and mounted on the working carriage 24 and conveyed to a material loading and unloading pit. Further, a pipe body to be newly provided is conveyed to a moving position from the pit by the working carriage 24. Thus, it is not necessary to build a working scaffold for each moving position, so that the construction work of the tunnel is not interrupted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for relocating existing pipes in open-cut tunnel construction, and more particularly, to a method for relocating existing pipes suspended from a girder in a lining pit via suspension bolts. It is.

[0002]

2. Description of the Related Art FIG. 4 shows an inside of a lining pit 1 of an open-cut tunnel. A lining plate 3 is provided on the upper part of the lining girder 2 to cover the opening of the ceiling of the tunnel. The lining girder 2 is supported by a retaining wall 4 or a supporting column 6 provided above the existing structure 5, and supporting beams 7 and 8 are erected in the horizontal direction.

[0003] The construction of the second basement section 9 is progressing below the inside of the lining pit 1, and the first basement section 10 is constructed above the underground section 1 as shown by a two-dot chain line. Further, a plurality of continuous girders 11 are provided in parallel with the entire line of the inside of the lining pit 1 in the axial direction of the tunnel below the lining girder 2, and hanging bolts 12 are vertically installed at places of the girder 11. The pipe 13 for water supply, electricity, etc. is supported.

If the pipe 13 is to be relocated for any reason, as shown in FIG. 5, for example, a work scaffold 14 is assembled on the support beam 8 so that the pipe 13 can be partially cut. . Subsequently, as shown in FIG. 6, the lining plate 3a above the removed portion is removed to partially open the ceiling of the tunnel, and the partially cut pipe 13a to be removed.
Is lifted by the crane 15. Further, the pipe 13
The above operation is repeated in other parts of the above, and the existing pipes 13 are sequentially removed.

[0005] For a pipe to be newly laid, work is performed in the reverse order of the above. That is, the lining plate is partially opened, a pipe to be newly installed is carried in from the ground, and the new pipe is connected to the work scaffold. This operation is sequentially repeated to lay a new pipe.

[0006]

Conventionally, when relocating an existing pipe in an open-cut tunnel construction, it is necessary to first assemble a work scaffold in a lining pit as described above.
The construction of the tunnel must be suspended for a certain period. In addition, the operation of removing and installing the upper lining plate is repeated for each removal portion, and the work efficiency is low.

Further, since the cutting length of the pipe to be removed is determined by the spacing of the lining girder, the cutting length may have to be shortened depending on the situation at the construction site. And the work becomes complicated. Similarly, the length of the pipe to be newly installed is also limited, and the standard size (6 m)
There was a problem that the tube could not be carried.

Therefore, when relocating the existing pipes in the lining pit of the excavation tunnel, the pipes can be removed and carried in without stopping the construction work of the tunnel, and the length of the pipes to be removed or carried in is reduced. There is a technical problem to be solved in order to increase the working efficiency and improve the working efficiency, and the present invention aims to solve this problem.

[0009]

DISCLOSURE OF THE INVENTION The present invention has been proposed to achieve the above-mentioned object, and lining girders are installed at predetermined intervals at the top of a lining pit at right angles to the axial direction of a tunnel. An open-cut tunnel in which a lining plate is covered on an upper part of the lining girder to cover an opening of a ceiling of the tunnel, and a lower part of the lining girder extends in the axial direction of the tunnel over the entire line in the lining mine. In an open-cut tunnel in which a plurality of continuous girders are provided in parallel and hanging bolts are suspended from places of the serial girders to support pipes, the lower part of the lining girder and both side positions of the plural serial girders In each, a pillar member is vertically provided, and a lower end thereof is extended below the existing pipe, and a lower frame of both pillar members is connected by a horizontal member to form a receiving stand so as to surround the pipe. Then, a rail is laid over the entire horizontal line in the lining mine in the axial direction of the tunnel above the horizontal member of the receiving base. A work cart is installed on this rail to enable travel in the lining mine, and when the existing piping is relocated, the pipe to be removed is moved to the pit provided outside the construction range by the work cart. Conveying, opening the lining plate above the pit, unloading the removed pipe to the ground, bringing in the pipe to be newly installed from the ground to the pit, and transporting the newly installed pipe to the relocation location using the work vehicle The purpose of the present invention is to provide a method of relocating existing pipes in open tunnel construction.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. For convenience of explanation, the same reference numerals are given to the same components as in the related art, and the description thereof will be omitted. As shown in FIGS. 1 and 2, in the lining pit 1 of the open tunnel,
Hanging bolts 12 are suspended from places of the continuous girder 11 to support pipes 13 for water supply, electricity, and the like.

[0011] Also, at the lower portion of the lining beam 2 and on both sides of the plurality of continuous beams 11, 11, pillar members 20, 20 are provided, respectively.
And extend below the existing pipe 13, and lower end portions of both pillar members 20, 20 are connected to a horizontal member 21.
And the receiving stand 22 surrounds the pipe 13.
To form The receiving gantry 22 is installed continuously at predetermined intervals along the girder 11.

Further, a pair of rails 23 is laid on the horizontal member 21 of the receiving stand 22 over the entire line of the inside of the lining 1 in the axial direction of the tunnel. Then, the work cart 24 is placed on the rail 23 so as to be able to travel in the lining pit 1. Note that the work cart 24 is formed so as to be able to run on its own by driving an electric motor, but may be a push-type work cart having no drive source.

When the existing pipe 13 is to be relocated, the work carriage 24 is moved to the removed portion and the pipe 13 is moved.
The pipe 13b to be removed from the container is removed and placed on the work cart 24. At this time, two work carts 24, 24 are used to stably transport the tube 13b.

Here, in the lining pit 1 of the open tunnel,
As shown in FIG. 3, a pit 2 for loading and unloading materials outside the construction area
The work carriage 24 travels on the rails 23 and conveys the pipe 13b to be removed to the pit 25. Above the pits 25, the lining plate 3
Is opened, and the pipe 13b to be removed is lifted by the crane 15 and carried out to the ground. Further, the above-described operation is repeated in other portions of the pipes 13, and the existing pipes 13 are sequentially removed and carried out from the pit 25 to the ground.

On the other hand, for a pipe to be newly laid, work is performed in the reverse order of the above. That is, the pipe to be newly installed is carried into the pit 25 from the ground by the crane 15 and placed on the work cart 24. Then, the two work vehicles 24, 24 run on the rails 23, and transport the pipe to be newly installed to the relocation location in the lining 1.

As described above, when the existing pipe 13 is relocated, the pipe 13b to be removed or the pipe to be newly installed is placed on the work vehicle 24, and the space between the relocation location and the pit 25 is moved by the work vehicle 24. Since the transportation is carried out, the removal and installation of the upper lining plate is not repeated every time the removal is performed, and the pipe 13 can be relocated without interrupting the construction of the tunnel. In addition, since the open-to-ceiling portion of the pit 25 is widely open, even if the length of the pipe to be removed or carried in is a fixed size (6 m), the pit 25 can be carried in and out of the pit 25, and the relocation work can be performed. Efficiency is improved.

The present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified ones.

[0018]

As described above, according to the present invention, when relocating an existing pipe, a pit for carrying in and out the pipe is provided at a position different from the removal or the newly installed pipe, and the pipe is removed or newly installed. Since the pipes to be transported are transported by the work cart, there is no need to construct a work scaffold for each relocation location, and the construction work of the tunnel is not interrupted.

Further, it is not necessary to open the upper lining plate every time the pipe is carried in and out, so that the opening and closing work of the lining plate is reduced and the length of the pipe to be removed or carried in is reduced. Since it can be lengthened, the number of cuts of existing pipes at the time of removal and the number of pipes connected at the time of new construction are reduced.

Thus, in the open tunnel, the work efficiency when relocating the existing pipe is remarkably improved.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention and is a longitudinal sectional front view of a lining pit of an open-cut tunnel.

FIG. 2 shows the embodiment of the present invention and is a longitudinal side view inside a lining pit of an open-cut tunnel.

FIG. 3 shows the embodiment of the present invention and is a longitudinal sectional side view of a pit.

FIG. 4 is a longitudinal sectional front view of a lining pit of an open-cut tunnel showing a conventional technique.

FIG. 5 is a longitudinal sectional front view of a lining mine in which a working scaffold is constructed, showing a conventional technique.

FIG. 6 is a longitudinal sectional side view of a lining pit in which a lining plate above a removed portion is removed, showing a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 In a lining pit 2 Lining girder 3 Lining plate 11 Through girder 12 Hanging bolt 13 Piping 13b Pipe to be removed 20 Column member 21 Horizontal member 22 Receiving stand 23 Rail 24 Work cart 25 Pit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Kenji Kishi 2-10-5 Katamachi, Miyakojima-ku, Osaka City, Osaka Inside the Kumagaya Gumi Osaka Branch (72) Inventor Masaaki Yano 2-chome Katamachi, Miyakojima-ku, Osaka, Osaka 10th-5th Kumagaya Gumi Osaka Branch

Claims (1)

[Claims] 1. A lining girder is provided at a predetermined interval at an uppermost portion in a lining pit at right angles to an axial direction of a tunnel, and a lining plate is covered on an upper part of the lining girder to open a ceiling opening of the tunnel. An open-cut tunnel covered with a plurality of girder parallel to the lower part of the lining girder in the axial direction of the tunnel over the entire line in the lining mine,
In an open-cut tunnel that supports hanging pipes by suspending suspension bolts at locations of the girder, pillar members are respectively suspended at a lower portion of the lining girder and on both sides of a plurality of girders. The lower end thereof is extended to below the existing pipe, and the lower ends of the two column members are connected by a horizontal member to form a receiving rack so as to surround the pipe. A rail is laid in the axial direction of the tunnel over the entire line of the lining, and a work vehicle is installed on the rail to enable traveling in the lining, and when the existing piping is relocated, it must be removed. The pipe is transported to the pit provided outside the construction area by the above-mentioned work vehicle, the lining plate above the pit is opened, the removed pipe is carried out to the ground, and the pipe to be newly constructed is transferred from the ground to the pit. And transporting the new pipe to the relocation site using the work cart. In existing piping transfer method to excavation tunnel construction to butterflies.