JP6891637B2 - Partition partition and pipe burying method - Google Patents

Description

The present invention relates to a partition partition for partitioning a groove when burying a plurality of pipes in a groove excavated in the ground, and a pipe burying method using the partition partition.

In recent years, underground wiring has become widespread from the viewpoint of consideration for the landscape and safety in the city. In underground wiring, pipes are buried underground, and power cables, communication cables, etc. are laid in the pipes. The same-day burial method is known as one of the methods used in such works.

In the same-day burial method, the pavement of the section to be laid is first broken and the soil under the pavement is excavated. Then, after providing a soil stopper at the excavated part, a pipe is installed, and the excavated part is backfilled with a buried material such as sand or soil. After that, the soil stopper will be removed and the road will be restored. The construction method that completes the work related to underground wiring in one day is called the same-day burial construction method.

Since the same-day burial method is a method of restricting traffic on the road and implementing it, it is required to release the road as soon as possible. Therefore, improvement of work efficiency is required, and one of them is conceivable to use, for example, the backfilling method of Patent Document 1. In the fluidized backfilling method of Patent Document 1, the groove is divided into unit work sections by installing a partition plate in the excavated groove. If the backfilling method of Patent Document 1 is used, different work can be performed for each unit work section. Therefore, it is considered that a plurality of operations can be performed in parallel and the work efficiency can be improved.

Japanese Unexamined Patent Publication No. 11-217832

Here, in the pipe burying work, there are cases where one pipe is buried and cases where a plurality of pipes are buried. In the former case, in the backfilling work, after arranging the pipe in the groove, the buried material is put in and the buried material is compacted from above. On the other hand, in the latter case, if the buried material is simply compacted after being charged, there is a concern that the buried material will not fit between the plurality of pipes and a gap will be created. Therefore, when burying a plurality of pipes, the buried material is put in and water-tightened, and then the buried material is compacted.

In Patent Document 1, the fluidized soil produced by mixing the excavated soil obtained in the excavation step with water and a solidifying agent is poured into the ditch. Such fluidized soil has a certain viscosity. Therefore, even if the outflow control plate has a gap between the pipe and the lower part as in Patent Document 1, it is considered that the outflow of the buried material, that is, the fluidized soil can be preferably prevented. ..

However, the water used for water tightening performed when burying a plurality of pipes has almost no viscosity. Therefore, if there is a gap with the pipe at the lower part like the outflow control plate of Patent Document 1, water will flow out to the adjacent section. Therefore, when the backfilling work includes water tightening, the technique of Patent Document 1 cannot be simply applied, and further improvement is required.

In view of such a problem, the present invention prevents the outflow of water to the adjacent section even when the water is tightened in the backfilling work, and divides the groove into a plurality of sections to efficiently perform the pipe burying work. It is an object of the present invention to provide a partitioning tool and a method of burying pipes which are possible.

In order to solve the above problems, a typical configuration of the partitioning tool according to the present invention is a partitioning tool for partitioning a groove when burying a plurality of pipes in a groove excavated in the ground, and the pipe is A pipe pillow having a plurality of insertion holes to be inserted, a pipe gap sealing member that seals the gap between the inner surface of the insertion hole of the pipe pillow and the pipe, and a gap between the side wall of the groove and the side surface of the pipe pillow. It is characterized by including a side wall gap sealing member.

According to the above configuration, the gap between the pipe pillow and the pipe is sealed by the pipe gap sealing member, and the gap between the side wall of the groove and the side surface of the pipe pillow is sealed by the side wall gap sealing member. Therefore, it is possible to preferably prevent the water used for water tightening during the backfilling operation from flowing out to the adjacent section. This makes it possible to divide the groove into a plurality of sections and perform different operations in parallel for each section. Therefore, it is possible to shorten the working time in the pipe burial work.

It is preferable to further provide a partition plate for partitioning the space above the tube pillow. According to such a configuration, the space above the tube pillow can be partitioned in the groove. As a result, it is possible to suitably prevent the inflow of the buried material into the adjacent section in the space above the pipe pillow, and it is possible to further improve the work efficiency.

In order to solve the above problems, a typical configuration of the pipe burying method according to the present invention is a pipe burying method of excavating the ground and burying a plurality of pipes, and excavating a groove for burying the pipes. The excavation process and the partitioning process include a process, a partitioning process of forming a section while piping using the above-mentioned section partitioning tool, and a backfilling process of adding a buried material and tightening water to backfill the section. It is characterized in that the backfilling process and the backfilling process are performed in parallel at different positions in this order.

The components corresponding to the technical idea of the partition partition described above and their description thereof are also applied to the pipe burying method. Further, by using the above-mentioned partition partitioning tool, the outflow of water to the adjacent section at the time of water tightening can be prevented. Therefore, the excavation work and the backfilling work in the adjacent section can be performed in parallel while partitioning the groove in the sectioning process. This makes it possible to improve the work efficiency of the pipe burial work.

In the backfilling step, a discharge jig having an opening width narrower than the groove may be installed at the rear end of the loading platform of the dump truck, and the buried material may be directly loaded from the dump truck. This makes it possible to concentrate the backhoe, which was conventionally used in the excavation process and the backfilling process, only in the excavation work. Therefore, the excavation process and the backfilling process can be easily performed in parallel, and the work efficiency of the pipe burying work can be further improved.

According to the present invention, even when water is tightened in the backfilling work, it is possible to prevent the outflow of water to the adjacent section, divide the groove into a plurality of sections, and efficiently perform the pipe burying work. Partitions and pipe burying methods can be provided.

It is a figure explaining the pipe burying method concerning this embodiment. It is a figure explaining the pipe burying method concerning this embodiment. It is a figure explaining the partitioning tool which concerns on this embodiment. It is a figure explaining the discharge jig attached to the loading platform of a dump truck. It is a figure explaining the detail of a discharge jig. It is a figure explaining the backfilling process using a discharge jig.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, other specific numerical values, etc. shown in the embodiment are merely examples for facilitating the understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are designated by the same reference numerals to omit duplicate description, and elements not directly related to the present invention are not shown. To do.

1 and 2 are views for explaining a pipe burying method according to the present embodiment. For ease of understanding, in FIG. 1, a cross-sectional view of the inside of the groove 320 observed from the side of the pipe 302 on the left side and a cross-sectional view of the inside of the groove 320 observed from the front of the pipe 302 on the right side. Is shown. Moreover, in the following embodiment, while detailing the pipe burying method, the partition partitioning tool 100 of the present embodiment will also be described.

In the pipe burying method according to the present embodiment, the underground 202 is excavated, and a plurality of pipes 302 are buried in the excavated portion. First, the underground 202 is excavated by the backhoe 300 to form a groove 320 for burying the pipe 302 (see FIG. 1 (c)) as shown in FIG. 1 (a) (excavation step). Then, as shown in FIG. 1B, the sheet pile 204 is arranged along the side wall of the groove 320 to stop the soil (soil fixing step). Next, as shown in FIG. 1 (c), the partition partitioning tool 100 of the present embodiment is arranged in the groove 320, and a section is formed in the groove while piping using the partitioning tool 100 (partitioning step). ).

FIG. 3 is a diagram illustrating a partition partitioning tool 100 according to the present embodiment. FIG. 3A is a perspective view of the partitioning tool 100 in a disassembled state, and FIG. 3B is an enlarged view of the partitioning tool 100 installed in the groove 320. The partition partitioning tool 100 shown in FIGS. 3A and 3B partitions the groove 320 when a plurality of pipes 302 are buried in the groove 320 excavated in the ground. The partition partitioning tool 100 of the present embodiment includes a pipe pillow 110, a pipe gap sealing member 120, and a side wall gap sealing member 130.

As shown in FIG. 3A, the tube pillow 110 includes two upper and lower tube pillows 112 and a central tube pillow 114. The upper and lower tube pillows 112 are formed with a plurality of semicircular insertion holes 112a on the side that comes into contact with the pipe 302, and the central tube pillow 114 has semicircular insertion holes 114a on both the upper and lower sides. Multiple are formed.

When installing the pipe 302, first, the lower pipe 302 is arranged in the insertion hole 114a of the lower upper and lower pipe pillow 112, and the central pipe pillow 114 is arranged on the lower pipe 302. After that, the upper pipe 302 is arranged in the insertion hole 114a on the upper side of the central pipe pillow 114. Then, the upper upper and lower pipe pillows 112 are arranged on the upper pipe 302. As a result, as shown in FIG. 3B, the semicircular insertion holes 112a and 114a of the upper and lower tube pillows 112 and the central tube pillow 114 are combined, and a plurality of pipes 302 (this implementation) are inserted into the insertion holes 112a and 114a. In the embodiment, four pipes 302 are illustrated).

Further, as shown in FIG. 3A, in the partition partitioning tool 100 of the present embodiment, the pipe gap sealing member is inside the pipe pillow 110, that is, the insertion holes 112a and 114a of the upper and lower pipe pillows 112 and the central pipe pillow 114. 120 is arranged. As a result, the gap between the inner surface of the insertion holes 112a and 114a of the pipe pillow 110 and the pipe 302 is sealed, and water leakage through the gap can be suitably prevented. As the pipe gap sealing member 120, for example, a plate-shaped rubber member can be preferably used, but the present invention is not limited to this, and other known members can also be used.

Further, as shown in FIG. 3B, a side wall gap sealing member 130 is arranged between the side surface of the tube pillow 110 and the side wall of the groove 320 (strictly speaking, the sheet pile 204). As a result, the gap between the tube pillow 110 and the groove 320 is sealed, and water leakage through the gap can be suitably prevented. As the side wall gap sealing member 130, for example, a sandbag can be preferably used, but the present invention is not limited to this, and other known members can also be used.

Further, as shown in FIGS. 3A and 3B, the partitioning tool 100 of the present embodiment is provided with a partitioning plate 140 for partitioning the space above the tube pillow 110. The partition plate 140 is composed of two plates, and the width of the partition plate 140 can be changed by shifting the overlapping width, and the entire width of the groove 320 can be closed. As a result, the space above the tube pillow 110 can be partitioned in the groove 320. Therefore, it is possible to suitably prevent the inflow of the buried material into the adjacent section in the space above the pipe pillow 110, and it is possible to further improve the work efficiency. In the present embodiment, the configuration in which the partition partition 100 is provided with the partition plate 140 is illustrated, but the present invention is not limited to this, and a configuration in which the partition plate 140 is not provided is also possible.

See FIG. When the groove 320 is partitioned into the section S1 while installing the pipe 302 using the partition partition 100 as shown in FIG. 1 (c), the material to be embedded in the section S1 of the groove 320 as shown in FIG. 2 (a). Is charged and water-tightened, and the compartment S1 is backfilled (backfilling step). At this time, in the present embodiment, as described above, the gap between the pipe 302 and the side wall (sheet pile 204) of the pipe 302 and the groove 320 is sealed by the pipe gap sealing member 120 and the side wall gap sealing member 130 of the partition partitioning tool 100. .. Therefore, it is possible to suitably prevent the outflow of water at the time of water tightening to the outside of the compartment S1. Further, since the partition partitioning tool 100 includes the partition plate 140, the inflow of the buried material to the outside of the partition S1 is suitably prevented in the space above the pipe pillow 110.

Then, as described above, since the outflow of water to the outside of the section during the backfilling process can be prevented, in the pipe burying method of the present embodiment, the sectioning process is performed in the region adjacent to the section where the burying process is performed. It can be performed. Specifically, as shown in FIG. 2B, a partitioning process (installation of piping and partitioning tool 100) for partitioning the groove 320 of the adjacent region into the section S2 while performing the backfilling step in the section S1. Is done.

Then, the excavation process is performed in the area adjacent to the section where the section process is performed. Therefore, according to the pipe burying method of the present embodiment, the excavation process, the sectioning process, and the backfilling process can be performed in parallel at different positions in this order, and the work efficiency of the pipe burying work can be improved. Become.

FIG. 4 is a diagram illustrating a discharge jig 400 attached to a loading platform 210 of a dump truck. In the backfilling step described above, it is preferable that the buried material is directly charged from the dump truck 200. Therefore, in the pipe burying method of the present embodiment, a discharge jig 400 for adjusting the opening width to be narrower than the groove is installed at the rear end of the loading platform 210 of the dump truck 200.

Specifically, as shown in FIG. 4, a loading platform 210 that can be inclined upward is provided at the rear of the dump truck 200. The loading platform 210 includes a front plate 212, a bottom plate 214, a pair of left and right side plates 220a / 220b, and a tilt plate 230.

Side plates 220a and 220b are attached to the left and right sides of the bottom plate 214, respectively. A tilt plate 230 is attached to the rear ends of the side plates 220a and 220b. Specifically, side plate side connecting portions 222a and 222b are provided above the rear ends of the side plates 220a and 220b, respectively. The tilt plate side connecting portions 232a and 232b are provided on the upper portions of the left and right ends of the tilt plate 230, respectively. By connecting these side plate side connecting portions 222a / 222b and the tilting plate side connecting portions 232a / 232b, the tilting plate 230 is rotatably attached to the rear end of the side plate 220a / 220b with the upper end as the center.

A buried material (not shown) is loaded on the loading platform 210 described above. Examples of the burial material include earth and sand such as soil, gravel, and crushed stone. As shown in FIG. 4, by rotating the loading platform 210 so as to open the tilted plate 230, the buried material is discharged from between the rear ends of the side plates 220a and 220b of the loading platform 210 and the tilting plate 230. To. Then, the discharge jig 400 described below is attached to the loading platform 210.

FIG. 5 is a diagram illustrating the details of the discharge jig 400. The discharge jig 400 shown in FIG. 2 is a jig for limiting the width of discharging the buried material loaded on the loading platform 210. As shown in FIG. 5, the discharge jig 400 includes a pair of leg members 410a / 410b, a pair of plate members 420a / 420b, a connecting member 430, and a dropout prevention member 440. The pair of leg members 410a and 410b are members arranged along the left and right side plates 220a and 220b of the loading platform 210, respectively.

The connecting member 430 is a member for fixing the opening at the rear end of the pair of plate members 420a and 420b on the rear side of the vehicle. The connecting member 130 is a rod-shaped member, and has one right side connecting portion 432 on the side connected to the right side plate material 420b, and a plurality of connecting members 130 on the side connected to the left side plate material 420a (in the present embodiment). It has a left side connecting portion 434a, a left side connecting portion 434b, and a left side connecting portion 434c.

As shown in FIG. 5, the drop-off prevention member 440 is delivered to the rear ends of the left and right side plates 220a and 220b of the loading platform 210 to prevent the discharge jig 400 from falling off behind the loading platform. Specifically, the dropout prevention member 440 includes a rod-shaped portion 442 and a pair of locking portions 444a and 444b fixed to both ends of the rod-shaped portion 442. The locking portions 444a and 444b are L-shaped members and are locked to the side plate side connecting portions 222a and 222b of the side plates 220a and 220b. As a result, the dropout prevention member 440 is passed between the left and right side plates 220a and 220b via the locking portions 444a and 444b.

In a state where the loading platform 210 is tilted as shown in FIG. 4, the end portions of the leg members 410a / 410b and the plate members 420a / 420b of the discharge jig 400 on the vehicle rear side hit the dropout prevention member 140 as shown in FIG. Get in touch. As a result, when the loading platform 210 is tilted to discharge the buried material, even if a downward load is applied to the discharging jig 400 due to the weight of the buried material, the leg members 410a / 410b and the plate members 420a / 420b are rearward of the vehicle. The end on the side comes into contact with the dropout prevention member 440. Therefore, the discharge jig 400 can be prevented from slipping (falling off) outside the loading platform 210, that is, below the lower ends of the side plates 220a and 220b, and the discharging jig 400 can be stably attached to the loading platform 210 of the dump truck 200. ..

As described above, when the loading platform 210 is tilted and rotated so as to open the tilt plate 230, the buried material loaded on the loading platform 210 is discharged. At this time, since the discharge jig 400 is attached to the loading platform 210, the width for discharging the buried material is not the width in the vehicle width direction of the loading platform 210, but the width W of the opening of the connecting member 430 (see FIG. 1). It becomes.

FIG. 6 is a diagram illustrating a backfilling process using the discharge jig 100 described above. The groove 320 for burying the pipe 302 is divided into an excavation section, a piping section, and a backfill section. In the excavation section, an excavation process of excavating the groove 320 by the backhoe 300 is performed. In the piping section, a sectioning process is performed in which a worker 330 installs a pipe 310, installs a section partitioning tool 100, and forms a boundary (form) with the backfill section.

Then, in the backfill section, as shown in FIG. 5, a backfilling step is performed in which the loading platform 210 is tilted at the work site, the tilting plate 230 of the loading platform 210 is opened, and the buried material is discharged from the opening of the discharge jig 400. ing. At this time, since the discharge jig 400 described above is attached to the loading platform 210, the buried material is discharged only from the openings of the plate members 120a and 120b, not the entire width of the loading platform 210 (see FIG. 4).

According to the above configuration, the buried material can be directly put into the excavated part from the dump truck 200 without scattering the buried material around the excavated part (groove 320). Therefore, the backhoe 300, which has been conventionally used in the excavation process and the backfilling process, can be devoted to the excavation work. As a result, excavation work, piping work, and backfilling work can be easily performed in parallel, work efficiency of pipe burying work can be improved, and work time can be shortened.

After the buried material is put in and the groove is backfilled as described above, the sheet pile removing step of removing the sheet pile 204 is performed. In this sheet pile removing step, the sheet pile 204 may be removed using an engine crane (not shown). This makes it possible to concentrate the backhoe, which was conventionally used in the sheet pile removal process, on the excavation work. This makes it easier to perform the above-mentioned work related to the pipe burial work in parallel, and it is possible to improve the work efficiency and shorten the work time.

INDUSTRIAL APPLICABILITY The present invention can be used for a partition partition for partitioning a groove when burying a plurality of pipes in a groove excavated in the ground, and a pipe burying method using such a partition partition.

100 ... partition partition, 110 ... pipe pillow, 112 ... upper and lower pipe pillow, 112a ... insertion hole, 114 ... central pipe pillow, 114a ... insertion hole, 120 ... pipe gap sealing member, 130 ... side wall gap sealing member, 140 ... Partition plate, 200 ... Dump truck, 204 ... Sheet pile, 210 ... Loading platform, 212 ... Front plate, 214 ... Bottom plate, 220a ... Side plate, 220b ... Side plate, 222a ... Side plate side connection, 222b ... Side plate side connection, 230 ... Pillow plate, 232a ... tilt plate side connection, 232b ... tilt plate side connection, 302 ... piping, 320 ... groove, 330 ... worker, 400 ... discharge jig, 410a ... leg material, 410b ... leg material, 420a ... Plate material, 420b ... Plate material, 430 ... Connecting material, 440 ... Falling prevention member, 442 ... Rod-shaped part, 444a ... Locking part, 444b ... Locking part

Claims (3)

A partitioning tool for partitioning a plurality of pipes when burying a plurality of pipes in a groove excavated in the ground.
A pipe pillow having a plurality of insertion holes through which the pipe is inserted,
A pipe gap sealing member that seals the gap between the inner surface of the insertion hole of the pipe pillow and the pipe, and
A side wall gap sealing member that seals a gap between the side wall of the groove and the side surface of the tube pillow,
A partition plate that partitions the space above the tube pillow,
Equipped with a,
Partition plate consists of two plates, the compartment partition device according to claim changeable der Rukoto the width of the partition plate by shifting the width superimposable. It is a pipe burying method that excavates the ground and burys multiple pipes.
The excavation process of excavating the groove to bury the pipe and
A partitioning process for forming a partition while piping using the partitioning tool according to claim 1.
A backfilling process in which the buried material is put in, water-tightened, and the section is backfilled.
Including
A pipe burying method, characterized in that the excavation step, the section step, and the backfilling step are performed in parallel at different positions in this order. Wherein in the refilling process, the opening width in the carrier of the rear end of the dump truck is placed a narrow discharge jig than the grooves, according to claim 2, characterized in that directly fed a buried material from the dump truck Piping burying method.

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