JPH06264492A - Back-filling method for excavated section - Google Patents

Abstract

PURPOSE:To improve workability by a method wherein, after a piping construction is completed in an excavated section formed by excavating the ground, water, solidifying material, and excavated soil produced by the excavation at the section are placed in the excavated section and stirred to solidify the water, material and soil. CONSTITUTION:An excavated section 2 is formed around a gas pipe 1 by excavating the ground. Next the pipe 1 is repaired in the section 2 and thereafter a stirrer 3 is put into the section 2 so that a part of a protector 3D of the stirrer 3 is pressed against the upper surface of the pipe 1. And excavated soil 4 produced by the excavation and water 5 are fed into the section 2 to agitate them uniformly over the whole interior of the section 2, following which a solidifying material 6 is fed thereinto and agitated together with the soil 5 and material 6, and thereafter the stirrer 3 is taken out of the section 2 and the soil 4, water 5, and material 6 are cured until they aquire a predetermined strength.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for backfilling an excavation portion, which is performed by excavating the ground to form an excavation portion, performing piping work inside the excavation portion, and then backfilling the excavation portion.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned backfilling method for excavated parts, the excavated soil produced by excavation may be unsuitable as soil for backfilling in the excavated part, for example, in the form of a solid block. Therefore, the excavated soil generated by excavation is treated as residual soil, and the soil for backfilling different from the excavated soil is transported to the location where the excavation section is located, and is put into the excavation section. I was trying to backfill the excavation part.

[0003]

However, according to the above-mentioned conventional backfilling method for the excavated portion, the cost for the backfilling soil is expensive and the economy is poor, and the backfilling soil is expensive. It is difficult to obtain river sand, etc. that is suitable for use as well as it is difficult to sufficiently harden the soil for backfilling in places with a lot of spring water. There is a drawback that it is difficult to dispose of the residual soil because it takes time and labor to put the soil for the soil into the excavation section, resulting in poor workability and the disposal site of the residual soil is limited. . The present invention eliminates the above-mentioned conventional drawbacks,
It is economical because there is no need for a backfilling soil cost, good workability because it does not require soil transportation work or pressure work, and it is possible to reuse excavated soil without the need to dispose of residual soil. The purpose is to provide a method of backfilling parts.

[0004]

In order to achieve the above object, the characteristic means of the backfilling method of the excavation part according to the present invention is to provide water, a solidifying material, and excavated soil generated by excavation of the excavation part. It is in the point that the water, the solidifying material, and the excavated soil are solidified by being put into the excavated portion and stirred, and the operation and effect thereof are as follows.

[0005]

In other words, since the excavated soil generated by excavation at the excavation portion is re-input to the excavation portion and used as the soil for backfilling, there is no need for a backfilling earth and the soil for backfilling is required. No need to transport excavated soil and excavated soil, and you can reuse river sand, etc., which is suitable as soil for backfilling, and there is no need to dispose of residual soil, and water and solidifying material, The excavated soil generated by excavation of the excavated portion is put into the excavated portion and stirred to solidify the water, the solidifying material, and the excavated soil, so that the soil pressure for backfilling is put into the excavated portion. This eliminates the need for work and enables the construction of even narrow grooves that do not allow the indenter to enter, and can prevent the quality of the installation from deteriorating due to inadequate indentation, even in places with a lot of spring water. The backfill excavated soil can be easily hardened. It is also possible to mix and stir water and solidifying material in the container in advance, and then add the water and solidifying material to the excavation section.However, in the backfilling method of the excavating section according to the present invention, water and solidifying material are input to the excavation section. Since the mixture is stirred, the container for accommodating and stirring the water, the solidifying material and the like is unnecessary, and it is not necessary to carry the container, wash the container, and the like.

[0006]

[Effects of the Invention] Therefore, there is no need for a backfill for earth.
It is economically efficient, and it is a transportation work of backfill soil and excavated soil.
Work and reinforcement work after putting backfill soil into the excavation section
A river that does not need to be filled and is suitable as soil for backfilling.
There is no need to get sand, etc.
Can be used and the excavated soil that has been backfilled can be sufficiently solidified even in places with a lot of spring
Can be mixed and stirred for mixing water and solidifying materials.
There is no need for a container to hold it, and it is easy to carry and clean this container.
Since it does not need to be put, it is extremely easy to work with as a whole.
Is it possible to prevent deterioration of construction quality due to poor pressure
Can improve the quality of construction, and can
Even if it is a narrow groove, it can be constructed.
Providing a backfilling method for the excavation part that can expand the range of
I was able to serve.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 shows a method of backfilling an excavation portion according to the present invention, taking as an example the case where the excavation portion 2 formed for repair work of a gas pipe 1 buried in the ground is backfilled. The procedure of the backfilling method for the excavated part is as follows. First, the ground is excavated to form the excavated portion 2 around the gas pipe 1.
After repairing the gas pipe 1 in the excavation part 2,
The work of inserting the stirrer 3 into the excavation section 2 is performed. The stirrer 3 is provided with legs 3C on both sides of the rotary shaft 3B of the stirring blade 3A, and a protector 3D for preventing the gas pipe 1 from being damaged at the tip of the rotary shaft 3B. A motor M for rotating the stirring blade 3A is provided on the base end side of the above, and operation handles 3E are provided on both sides of this motor M. Then, the leg 3C and the rotating shaft 3 of the stirring blade 3A
B is the rotating shaft 3B around the connecting portion 3F between them.
Is swingably connected, that is, the stirring position can be freely changed within the excavation part 2 so as to be pivotally connected. The insertion work of the stirrer 3 into the excavation section 2 is more specifically described by inserting the stirring blade 3A of the stirrer 3 into the excavation section 2 and inserting the protector 3D of the stirrer 3 into the upper surface of the gas pipe 1. Apply to. When the protector 3D of the stirrer 3 is applied to the gas pipe 1, the excavated soil 4 and the water 5 generated by excavation are charged, and the stirrer 3 uniformly stirs them throughout the excavated portion 2. In this case, the excavated soil 4 and the water 5 located on both sides of the gas pipe 1 are first stirred, and then the gas pipe 1 is agitated.
The excavated soil 4 and the water 5 located in the upper part of the excavated soil 4 and the water 5 are agitated so that the excavated soil 4 and the like in the former part are sufficiently agitated in the excavated portion 2. Next, the solidified material 6 is charged and the excavated soil 4 and the water 5 are mixed in the same manner as when the excavated soil 4 and the water 5 are stirred.
And the solidifying material 6 are stirred. Thus, excavated soil 4 and water 5
After stirring and, the solidifying material 6 is put into the excavating portion 2 to stir the excavated soil 4, the water 5 and the solidifying material 6, so that the solidifying material 6 is less likely to be unevenly distributed in the lower portion of the excavating portion 2, It is possible to prevent the surface portion of the excavation portion 2 from becoming soft. When the stirring is completed, the stirrer 3 is taken out from the excavation section 2 and the excavated soil 4, the water 5 and the solidifying material 6 are cured until they have a predetermined strength.

[Other Embodiment] In the above embodiment, the excavation unit 2 is used.
The excavated soil 4 and the water 5 and the solidified material 6 were stirred and then the solidified material 6 was introduced, and the excavated soil 4, the water 5 and the solidified material 6 were stirred. 6 and 6 may be put into the excavation unit 2 at once from the beginning to stir them.
Further, in the above embodiment, the case where the excavation portion 2 formed for repair work of the gas pipe 1 buried in the ground is backfilled has been described as an example, but the gas pipe 1 is formed to be newly buried. The present invention can be applied even when the excavated portion 2 is backfilled. The solidifying material 6 may be something other than cement.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is an explanatory view of a backfilling method for an excavated portion.

[Explanation of symbols]

 2 Excavation part 4 Excavation soil 5 Water 6 Solidifying material

Claims (2)

[Claims] 1. Excavating the ground to form an excavation part (2),
A method of backfilling an excavation part for backfilling the excavation part (2) after performing piping work in the excavation part (2), which comprises water (5), a solidifying material (6), and the excavation part ( The excavated soil (4) generated by excavation of 2) is put into the excavated portion (2) and stirred, and the water (5), the solidifying material (6), and the excavated soil (4) are added.
A method of backfilling the excavated part that solidifies the and. 2. The solidifying material (6) after the water (5) and the excavated soil (4) are put into the excavated portion (2) and stirred.
The backfilling method for the excavated part according to claim 1, wherein the water (5), the solidifying material (6), and the excavated soil (4) are stirred into the excavated part (2).