JP2645520B2 - Sandbag molding method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention relates to a method for forming a sandbag used for embankment construction and the like.

<Conventional technology> When laying railways and roads higher than the ground,
In some cases, embankments are built up by embedding soil and the like, and railroads, roads, and the like are laid on top of the embankment.

As a method of constructing the embankment, there is a method in which sandbags are piled up at intervals to construct a wall body, and soil and the like are erected between the sandbag walls.

<Problems to be Solved by the Present Invention> In a conventional sandbag, a bag is filled with a filler such as sand manually.

Therefore, it takes a lot of time and labor to form the sandbag.

In addition, if the wall is constructed only by stacking the sandbags, the sandbag wall may fall down due to the earth pressure applied between the sandbag walls, and the embankment may collapse.

<Object of the present invention> The present invention has been made in order to solve the above-described problems, and provides a method for forming a sandbag capable of easily and quickly forming a sandbag and constructing a stable embankment. The purpose is to do.

<Configuration of the Present Invention> Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

<A> Formation of Bag (FIGS. 1 and 2) The bag is formed of a flexible sheet 1 such as a cloth having air permeability and water permeability.

The end of the flat portion 11 of the sheet 1 is folded in a loop as shown in FIG. 1, and the folded edge is fixed to the flat portion 11 by a well-known joint pipe 12 or a stopper.

In the case of fixing with the joint pipe 12, the overlapping portion of the folded edge and the flat portion is fixed with the joint pipe 12 so as to be stitched.

Next, as shown in FIG. 2, both open ends of the loop-shaped portion of the sheet 1 are closed by sewing or a stopper using a flexible closing sheet 13 such as a cloth having air permeability and water permeability. Then, the bag-like portion 14 is formed.

The bag is provided with one or more filler inlets 15.

The inlet 15 has a pocket shape, and the hose 2 for injecting the filler can be inserted therein.

Then, when the hose 2 is pulled out after filling with the filler, the inlet 15 is formed to close naturally.

<B> Pressure feeding of filler (FIG. 2) Sand 3 or the like is used as the filler to be filled in the bag body.

For example, as shown in FIG. 2, the packing material pressure feeding device may be a device in which a compressor 22 is connected to a pressure feeding device 21 having a filling hose 2.

 First, the tip of the hose 2 is inserted into the inlet 15.

Next, the pumping machine 21 and the compressor 22 are operated, and the sand 3 is put into the pumping machine 21 by a belt conveyor or the like, and is fed into the hose 2 by pressure.

Then, the sand 3 is vigorously squirted from the end of the hose 2 into the bag-like portion 14, and the sand 3 can be immediately filled into the bag-like portion 14 by the pumping force of the machine.

At this time, since the sheet 1 has air permeability, air escapes to the outside, and only the sand 3 is filled in the bag-like portion 14.

After the filling of the sand 3 is completed, the pump 21 and the compressor 22 are stopped, and the hose 2 is pulled out.

At this time, since the inlet 15 is configured to close naturally when the hose 2 is pulled out, the work of closing the inlet 15 can be omitted.

As another method of pumping the filler, a method of pushing the filler into the bag-like portion 14 using a piston or the like can be considered.

 Thus, the formation of the sandbag is completed.

<Method of Using Sandbag> The method of using the sandbag of the present invention will be described for a case where an embankment as shown in FIG. 3 is built.

The sandbag constructed as described above is placed on the embankment ground.

At this time, the flat part 11 is laid so as to be located on the embankment side.

Next, the embankment material 4 such as soil is put on the flat portion 11, the embankment material 4 is pressed by the roller 5, and embankment is performed to the height of the bag-shaped portion 14.

Then, the sandbags are piled up in a plurality of steps in the same manner, and the embankment material 4 is supplied, thereby constructing an embankment having a predetermined height.

 This completes the embankment construction.

<Other Examples> As another example, the inside of the bag-like portion 14 may be divided into a plurality of rooms.

In this case, the inside of the bag upper portion 14 may be partitioned using a sheet such as a flexible cloth having water permeability and air permeability.

By dividing the inside of the bag-shaped portion 14 in this manner, the installation stability can be improved.

<Effects of the Present Invention> Since the present invention has been described above, the following effects can be expected.

<A> In the conventional sandbag, since a bag body is filled with a filler such as sand manually, a great deal of time and labor is required for forming the sandbag.

On the other hand, the present invention efficiently fills a bag having air permeability and water permeability with a filler such as sand by a pumping force of a machine.

Therefore, the sandbag can be formed very quickly and easily as compared with the case of the conventional manual operation.

<B> If the wall is constructed by stacking the sandbags as in the related art, the sandbag wall may fall down due to the earth pressure applied between the sandbag walls, and the embankment may collapse.

However, in the present invention, the bag-shaped part and the flat part are formed integrally, and the embankment material is put on the flat part.

That is, since the flat portion of the sheet is embedded in the embankment material, the flat portion is fixed in the soil material by frictional resistance.

Therefore, since the sheet flat portion does not pull out,
The sandbag can be prevented from falling down, and a stable embankment can be built.

<C> Since the bag of the present invention has the bag-shaped portion and the flat portion formed integrally, there is no need to use a reinforcing material such as a tensor, and the sandbag can be used alone.

<D> According to the present invention, the filler such as sand can be efficiently filled by the pumping force of the machine, so that a large-capacity sandbag can be formed in a short time.

<E> When the inside of the sandbag is divided into a plurality of parts, the installation stability of the sandbag is improved, so that the stability of the whole embankment can be improved.

<F> The filler filling port provided in the sandbag of the present invention is configured to close naturally when the filler hose is pulled out.

 Therefore, the work of closing the injection port can be omitted.

[Brief description of the drawings]

FIG. 1 and FIG. 2 are explanatory diagrams of a forming procedure of a sandbag according to an embodiment of the present invention. FIG.

Claims (1)

(57) [Claims] 1. A method for forming a sandbag used for constructing an embankment or the like, comprising: using a flexible sheet having water permeability and air permeability, forming a bag body having a bag-shaped portion and a flat portion; A method for forming a sandbag, wherein a filling material is pressure-fed into the bag-shaped part from the provided inlet by air, air is discharged outside the bag-shaped part, and only the filler is filled in the bag-shaped part.