JP3007508U - Temporary filling material for buried pipeline construction - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a temporary filling member for a buried pipeline work that does not require much time and labor for the temporary filling work and does not require the use of a large amount of earth and sand. [Structure] The backfilling member 1 is composed of a wedge-shaped box body 3, two side box bodies 5, and a tray 7 as one set, and two sets of the backfilling member 1 are used in a two-stage stack. First, the saucer 7 is installed on the bottom of the hole, and the side box 5 is installed thereon. When the wedge-shaped box body 3 is pushed between the two side box bodies 5, the side box body 5 is pushed back to both sides to the full edge of the tray 7.
In the same procedure, another set of backfilling members 1 is stacked and installed, finally the gap is filled with earth and sand S, and the ground surface is paved with asphalt A. If the hole is backfilled with the earth and sand S after the backfill member 1 is installed in this way, the amount of the earth and sand can be significantly reduced compared to the case where the entire hole is filled with the earth and sand. No labor or time is required for work.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a temporary filling member for buried pipeline construction used for temporarily backfilling a dug hole in order to temporarily interrupt the laying work when digging up a road or the like to lay a buried pipeline. Regarding

[0002]

[Prior art]

 Conventionally, a construction for laying a buried pipeline in the ground (buried pipeline construction) has been performed. Since roads are dug up during such construction, the holes are temporarily backfilled at the end of the day's work so that traffic will not be obstructed before the construction is resumed. This temporary filling work was carried out by filling the hole with temporary sand and covering it with asphalt. When the construction was resumed, the backfilled part was dug up again to remove the earth and sand before the construction was started.

[0003]

[Problems to be solved by the device]

 However, according to the conventional technique, the work of removing the temporarily buried soil is a time-consuming and labor-intensive work. In addition, since a large amount of earth and sand is used, it is expensive, and in principle the earth and sand used for backfilling cannot be used again as earth for backfilling. For this reason, there is a problem in that the resources are wasted and it takes much money to dispose of them.

Therefore, an object of the present invention is to simplify the temporary filling work in the buried pipeline work and save resources.

[0005]

[Means, actions, and effects for solving the problems]

 The present invention, which has been made to achieve the above-mentioned object, is a temporary filling member for buried pipeline construction, which is used for temporarily backfilling a hole dug up in a buried pipeline laying construction, and It consists of at least three blocks that are assembled in contact with each other. Among these blocks, at least one contact surface of adjacent block groups is inclined with respect to the vertical direction, and one block is inclined with respect to the other block. It is characterized in that it is configured as a wedge member that is driven in from above and assembled.

According to the temporary filling member of the present invention, the block (wedge member) that is driven in later is installed so as to push out the block previously installed in the hole. For this reason, the block that is installed first can be expanded to an appropriate installation position by a block that is driven in later without being installed properly. Therefore, even if there is some variation in the width of the dug hole, the temporary filling member fits exactly inside the hole, and it is not necessary to prepare several types of temporary filling members according to the width of the hole.

After that, if only the gap between the hole and the temporary filling member is filled with earth and sand, and if necessary, the surface is covered with asphalt or the like, the hole can be filled back. At this time, backfilling is completed with a small amount of earth and sand, which is smaller than the volume of the temporary filling member. Therefore, it is possible to reduce costs and prevent waste of resources. In addition, when resuming the construction of the buried pipeline, it is sufficient to remove the block from the hole and remove only a small amount of the remaining earth and sand, so that the construction can be restarted promptly without any time or labor. It also contributes to shortening the period.

By the way, the bottom of the hole dug in the buried pipeline work is often not flat, and it may be difficult to spread the previously installed block even if the block that serves as the wedge member is pushed in. Therefore, as described in claim 2, it is preferable that each of the blocks is slidably mounted and a tray having a regulation member for regulating a sliding range of the block at an end thereof is also combined.

According to the provisional filling member according to the second aspect, if the saucer is installed at the bottom of the hole first, the block placed first can be inserted only by inserting the block to be the wedge member from above. It slides smoothly and hits the regulating member at the end to stop at the specified position. Therefore, it is easy to push in the block that serves as the wedge member.

Further, as described in claim 3, it is preferable that each of the blocks is formed into a hollow box-like body, and a depression is provided on an upper surface of each block, and a grip bar is arranged in the depression. . With this configuration, the block can be easily put in and taken out from the hole by a construction machine or the like, so that workability is improved. Moreover, since the grip bar is arranged in the recess, the grip bar does not get in the way even if the temporary filling members are piled up when the deep hole is to be backfilled.

[0011]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. 1A to 1C are explanatory views showing a procedure of temporary filling with a temporary filling member as an example. In buried pipeline construction, a hole is generally dug with a specified width and depth over a specified length. FIGS. 1A to 1C show vertical cross sections viewed from the side surface and the front side in order to show the width L of the hole and the depth D of the hole. In addition, on the left side of the figure is a buried pipeline P being laid.

The temporary filling member 1 used in this embodiment is composed of a wedge-shaped box body 3, two side box bodies 5 and a receiving tray 7 as one set, and two sets of the temporary filling member 1 are provided. When used in a two-tiered stack, the size is just right for backfilling the holes of the specified dimensions. In order to perform temporary filling using this temporary filling member 1, first, the tray 7 is placed at the bottom of the hole, and the inclined surfaces 5a of the two side boxes 5 are made to face each other. The box 5 is set on the tray 7 (Fig. 1 (a)).

Then, the wedge-shaped box body 3 is inserted between the two side box bodies 5 from above. Then, the side box body 5 is pushed to both sides to the full edge of the tray 7 (FIG. 1 (b)). At this time, depending on the case, if the maximum width of the tray 7 is appropriately adjusted and decided, the size at the time of completion of assembly can be freely decided in accordance with it.

Then, another set of the temporary filling member 1 is installed by the same procedure so as to overlap with the temporary filling member 1 previously installed, and finally, the gap is filled with the earth and sand S, Pave the ground surface with Asphalt A (Fig. 1 (c)). In this state, the temporary filling member 1 is strong enough not to be crushed even if a large automobile passes through the ground surface.

Next, the configuration of the temporary filling member 1 will be described in detail. As shown in FIGS. 2 (a) and 2 (b), the wedge-shaped box body 3 is a wedge-shaped hexahedron in which a pair of opposed side surfaces of a rectangular parallelepiped are inclined so that the lower side is narrowed, and a recess is formed on the upper surface thereof. 8 is formed, and a grip bar 9 made of a round bar material is provided in the recess 8. Further, the lower surface of the wedge-shaped box body 3 is provided with the depression 8 and the grip bar 9 similar to the upper surface. In order to reduce the weight of the wedge-shaped box body 3, a frame made of a lightweight angle material made of a material such as aluminum alloy or FRP is added to a lightweight panel made of a material such as aluminum alloy or FRP. To make a hollow structure.

The side box body 5 is a hexahedron on the lower side in which one side surface of the rectangular parallelepiped is inclined, and a recess 8 and a grip bar 9 are provided on the upper surface and the lower surface thereof, as in the wedge-shaped box body 3. There is. The inclined surface 5a of the side box body 5 is parallel to the inclined surface 3a of the wedge-shaped box body 3, and the height of the side box body 5 (956 mm in the embodiment) is the height of the wedge-shaped box body 3 ( In the example, it is slightly higher than 906 mm). The side box body 5 is also made of a material such as aluminum alloy or FRP in the same manner as the wedge-shaped box body 3 in order to reduce the weight, and has a hollow structure in which a panel is stretched over a frame of an angle member.

As shown in FIGS. 3A and 3B, the tray 7 has an upper steel plate 21 welded with an angle member as a slide restricting member at the left end in the figure and a slide restricting member at the right end in the figure. And a lower steel plate 23 welded to all angle members, the upper steel plate 21 and the lower steel plate 23 being fixed by a countersunk screw 25 screwed into the screw hole of the lower steel plate 23 through the elongated hole 21a of the upper steel plate 21. ing. If the plate screw 25 is loosened, the lower steel plate 23 can be pulled out to the position shown by the alternate long and short dash line in the figure, and the tray 7 can be lengthened. The head of the dish screw 25 is inserted into the long hole 21a, and the upper surface of the tray 7 is flat. Therefore, when the wedge-shaped box body 3 is pushed in, the side box body 5 slides smoothly.

In the temporary filling member 1 configured as described above, even if the width L of the hole shown in FIG. 1A is slightly changed, the length of the tray 7 can be adjusted according to the change. Here, when the length of the tray 7 is the shortest, as shown in FIG. 1B, the wedge-shaped box bodies 3 and the side box bodies 5 are arranged in a state where the upper surfaces thereof are flat and aligned. On the other hand, if the tray 7 is made longer, the wedge-shaped box body 3 is deeply inserted, and the side box body 5 is pushed to the full edge of the tray 7 as shown in FIG. In other words, regardless of the length of the tray 7, the side box body 5 can be installed in proper alignment with both ends of the tray 7 only by pushing in the wedge-shaped box body 3. In the state shown in FIG. 4, a step is formed between the upper surface of the wedge-shaped box body 3 and the upper surface of the side box body 5, but since this step is filled with the earth and sand S, there is no problem. If the hole is longer even if the saucer 7 is the longest, as shown in Fig. 5 (a), the saucer 7 is not used, and the vicinity of the center of the bottom of the hole is slightly dug up to form a wedge shape. The lower part of the box 3 is pushed in, or, as shown in FIG. 5 (b), there is no wedge-shaped part of another size corresponding to the part pressed into the bottom of the hole in FIG. 5 (a). It is also possible to use the box 3 '. Alternatively, as shown in FIG. 5 (c), three wedge-shaped boxes 3 can be arranged and used.

If the inclination angle of the inclined contact surface is set to be large with respect to the vertical, the side box body 5 can be largely slid by pushing the wedge-shaped box body 3 a little. Therefore, the inclination angle of the contact surface may be appropriately determined from the relationship between the height dimension of the temporary filling member 1 and the amount of sliding of the side box body 5.

As described above, according to the temporary filling member 1 of the present embodiment, the wedge-shaped box body 3 can be installed so as to push the side box body 5 away, so that the temporary filling member 1 fits exactly into the hole. Even if it's sized, it's extremely easy to install. In addition, even if the size of the hole varies slightly, the side box body 5 is pushed away according to the hole and fits tightly, so there is no need to prepare temporary filling members of various sizes. good.

Further, since the tray 7 installed at the bottom of the hole is also combined, the wedge-shaped box body 3 can be easily pushed in, and the side box body 5 can be installed at the intended position. Furthermore, since the wedge-shaped box body 3 and the side box body 5 of the embodiment are hollow and also have the grip bar 9, they can be easily put in and taken out from the holes by a construction machine. In particular, since the grip bar 9 is arranged in the recess 8, the grip bar 9 does not get in the way even if the temporary filling members 1 are stacked as shown in the embodiment.

In addition, if such a temporary filling member 1 is installed in the hole, it is not necessary to use a large amount of earth and sand in the buried pipeline work, and it is possible to reduce costs and prevent waste of resources. . In addition, the construction can be restarted promptly without any time and labor, which contributes to shortening the construction period.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modes can be adopted without departing from the scope of the present invention. For example, in the embodiment, an example in which the temporary filling member 1 is composed of three blocks and a modification thereof is composed of five blocks are shown, but the number of blocks is not limited to this.

Further, in the embodiment, all the contact surfaces with the wedge-shaped box body 3 side box body 5 are inclined surfaces, but the contact surfaces of at least one adjacent block group are inclined with respect to the vertical. If so, the effect as a wedge can be obtained.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a procedure of temporary filling in an example.

FIG. 2 shows structures of a wedge-shaped box body and a side box body,
(A) is the top view, (b) is the front view.

FIG. 3 shows a tray, (a) is a plan view thereof, (b)
Is a sectional view thereof.

FIG. 4 is an explanatory diagram when a backfill hole is long.

FIG. 5 is an explanatory diagram showing a modification of the method of using the temporary filling member.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Temporary filling member, 3 ... Wedge-shaped box, 5 ... Side box, 7 ... Receiving tray, 8 ... Recess, 9 ... Gripping bar, 21 ... Upper steel plate , 21a ... elongated hole, 23 ...
-Lower steel plate, 25 ... Plate screw.

Claims (3)

[Scope of utility model registration request] 1. A temporary filling member for buried pipeline construction, which is used for temporarily backfilling a hole dug up in a buried pipeline laying construction, and comprises at least three or more members assembled by contacting their wall surfaces with each other. It is composed of blocks, at least one set of adjacent blocks of these blocks is inclined with respect to the contact surface with respect to the vertical, and one block is struck against the other block as a wedge member from above to be assembled. A temporary filling member for buried pipeline construction characterized by being configured. 2. The temporary filling member for buried pipeline construction according to claim 1, wherein each of the blocks is slidably mounted and a regulating member for regulating a sliding range of the block is provided at an end portion. A temporary filling member for buried pipeline construction, which is characterized by being combined with a provided saucer. 3. The temporary filling member for buried pipeline construction according to claim 1 or 2, wherein each of the blocks is a hollow box-shaped body, and a recess is provided on the upper surface of each block, and the inside of the recess is formed. A temporary filling member for buried pipeline construction, characterized in that a grip bar is arranged on the inside.