JPH05280299A - Filling method for horizontal hole - Google Patents

Abstract

PURPOSE:To fill earth and sand into a horizontal hole formed in the earth extending over the full length, even if there is crumbled soil in the horizontal hole. CONSTITUTION:A flexible tube 9 is made to roll over and run into a horizontal hole 2 by hydraulic pressure, and hence the tube is made to roll over and run, getting over obstacles such as crumbled soil 4, 5. Thereafter, a pipe 32 is smoothly inserted into the part of the tube not rolling over. Thereafter, the tube 9 is pulled back and the pipe 32 is drawn out while stuffing muddy earth and sand into the pipe by means of a pump.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for filling a horizontal or diagonally extending lateral hole formed in soil with a filler such as soil.

[0002]

2. Description of the Related Art For example, after pulling out and removing an underground steel pipe buried underground across a road, it is necessary to fill a lateral hole formed in the soil with soil. Conventionally, a tube such as a flexible hose is inserted into this lateral hole and pushed over the entire length of the lateral hole, and then mud-like earth and sand is supplied to the tube by a pump, and the tip of the tube inside the lateral hole The pipe is ejected, and in this state, the pipe is gradually pulled out and moved to fill the lateral hole with earth and sand.

[0003]

In such a prior art, when an underground steel pipe is pulled out from the soil, the soil collapses into the lateral hole, and therefore the pipe is pushed into the lateral hole over the entire length of the lateral hole. Difficult to insert. This is especially the case when the width of the road is long, for example 5 m or more, so that it is difficult to insert a pipe into the lateral hole when a lateral hole is formed across the road.

Even if the lateral hole is partially collapsed as described above, the tube may have a small diameter so that the hose can be inserted over the entire length of the lateral hole. Then, it becomes difficult to push a large amount of earth and sand into the pipe to efficiently and smoothly fill the lateral hole.

An object of the present invention is to provide a method capable of smoothly filling a filling material such as earth and sand into a horizontal or oblique lateral hole.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a flexible tube is fluidly pressure-reversed in a lateral hole, a tube is inserted into a non-inverted portion of the tube, and then a filling material is inserted into the tube. The horizontal hole filling method is characterized in that the pipe is pulled out while pushing in.

[0007]

According to the present invention, for example, the flexible tube is made to reversely run by fluid pressure, for example, compressed air, in the lateral hole in the soil formed after the underground steel pipe is pulled out from the soil. Even if there are obstacles such as collapsed soil in the lateral hole, the tube should ride over the obstacles such as soil in the lateral hole and fill the lateral hole with a filling length. Over the entire length of the lateral hole, for example. Then insert the tube into the non-inverted part of the tube so that it moves smoothly through the non-inverted part of the tube, thus inserting the hose over the entire length of the side hole as described above for the side hole. It becomes possible to do. Next, the hose and tube can be pulled out while pushing the filler such as mud-like earth and sand into the hose, thus filling the filler over the entire length of the lateral hole.

[0008]

1 is a sectional view of an embodiment of the present invention.
The lateral hole 2 of the soil 1 is formed after the underground steel pipe is pulled out to the vertical hole 3 side, and it is necessary to embed earth and sand as a filler in the lateral hole 2 over the entire length of the lateral hole. ..

When the underground steel pipe is pulled out from the soil 1 into the vertical hole 3, the collapsed earth and sand 4 and 5 are present as obstacles in the horizontal hole 2, and therefore, such soils 4 and 5 are present.
The flexible tube 9 is used in order to allow the flexible tube 32 to be smoothly inserted over the entire length of the lateral hole 2 even in the presence of.

When filling the earth and sand 34 (see FIG. 4 which will be described later) in the lateral hole 2, first, as shown in FIG. The ends of 12 are connected, and the other end of the connecting cylinder 12 is connected to the connecting cylinder 14 of the housing 13. The tube 9 is wound around the winding drum 20 in the housing 13, and the winding drum 20 is rotatable. Housing 13
Has airtightness, and compressed air is supplied from the fan 30. The end portion 9 a of the tube 9 is fixed to the connecting tube 14.
The compressed air is supplied from the fan 30 into the housing 13, so that the tube 9 is not inverted.
b is inverted at the inverted portion 9c at its tip, and the inverted portion 9
The d travels in the traveling direction 7 in the lateral hole 2 while being in close contact with the connecting cylinder 12 and each inner peripheral surface in the lateral hole 2. This tube 9
Is a flexible right cylinder made of, for example, a thin film of polyethylene, and has an outer diameter equal to or slightly larger than the inner diameter of the lateral hole 2. When the tube 9 reversely travels, the tube 9 rides on the soil 4, 5 that has collapsed in the lateral hole 2 and travels in the traveling direction 7, and thus the inverted portion 9c reaches the end of the lateral hole 2. be able to.

Thereafter, the fan 30 is stopped and the connecting cylinder 12
And the housing 13 is removed. Next, as shown in FIG. 1, the tube 3 is placed in the non-inverted part 9b of the tube 9.
Insert by pushing 2. The tube 32 is made of a material such as rubber or synthetic resin, and has flexibility, or may be a fire hose containing cloth, and has greater bending rigidity than the tube 9. The tube 9 is smooth and therefore its non-inverted part 9b
It is easily possible to insert the tube 32 therein smoothly and over the entire length of the lateral hole 2 regardless of the presence of the soil 4, 5 in the lateral hole 2.

Therefore, as shown in FIG. 4, the end portion of the pipe 32 is connected to the pump 33, and the mud-like earth and sand 34 which is the filler.
Is pushed into the tube 32. While pushing in this earth and sand 34,
The tube 32 is pulled out to the vertical hole 3 side as shown by the arrow 35 in FIG. By pulling out the pipe 32 and the tube 9 while pushing the earth and sand 34 into the lateral hole 2 in this manner, the earth and sand 34 can be filled over the entire length of the lateral hole 2 as shown in FIG. 6.

Instead of compressed air, other gases may be used, or alternatively liquids may be used, whereby the tube 9
May be reversed. The present invention can be widely applied to fill not only the lateral holes 2 formed in the soil but also other lateral holes with a filler such as earth and sand. Although the lateral hole 2 may extend horizontally, it can be implemented similarly to the present invention even if it is inclined at an angle with respect to the horizontal.

After inserting the tube 32, the tube 9 may be pulled back into the vertical hole 3 and removed. Further, the mud-like earth and sand 34 may be pushed into the pipe 32 by hand with a stick or the like.

[0015]

As described above, according to the present invention, even if there is an obstacle such as soil that has collapsed and fell in the lateral hole, the flexible tube is made to reversely run by fluid pressure to fill the lateral hole with the filling material. Can be reversed over the fill length to be filled, for example the entire length of the lateral hole, thus allowing the tube to be smoothly inserted into the non-inverted part of this tube,
Since the tube and the tube are pulled out while the filler is being pushed into the tube, the tube can easily fill the earth and sand over the entire length of the lateral hole. Further, since the tube can be smoothly inserted into the non-inverted portion of the tube, it is possible to increase the diameter of the tube and improve workability.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which a tube 32 is inserted into a non-inverted portion 9b of a tube 9 according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a lateral hole 2.

FIG. 3 is a cross-sectional view showing a state in which a tube 9 is reversely run in a lateral hole 2.

FIG. 4 is a pump 33 for pumping soil 34 as filler in the pipe 32.
It is sectional drawing which shows the state pushed in by.

5 is a cross-sectional view showing a state in which the pipe 32 is pulled out while pushing the earth and sand 34 into the lateral hole 2. FIG.

FIG. 6 is a cross-sectional view showing a state in which the lateral hole 2 is filled with earth and sand 34.

[Explanation of symbols]

 1 Soil 2 Horizontal hole 3 Vertical hole 4,5 Soil 9 Tube 9b Non-inverted portion 9c Inverted portion 9d Inverted portion 12 Connection tube 13 Housing 20 Winding drum 30 Fan 32 Tube 33 Pump 34 Sand

Claims (1)

[Claims] 1. A flexible tube is reversely run in a lateral hole by fluid pressure, the tube is inserted into a non-inverted portion of the tube, and then the tube is pulled out while pushing the filler into the tube. A method for filling a lateral hole, which is characterized in that