WO2009119990A1

WO2009119990A1 - Drilling rig and drilling method using the same

Info

Publication number: WO2009119990A1
Application number: PCT/KR2009/001330
Authority: WO
Inventors: 백남진
Original assignee: Back Nam Jin
Priority date: 2008-03-28
Filing date: 2009-03-17
Publication date: 2009-10-01
Also published as: KR20090103366A

Abstract

Disclosed are a drilling rig and a drilling method using the same. The present invention comprises a polygonal out casing; a striking apparatus which is mounted in the out casing and strikes it in the longitudinal direction so that the out casing is inserted into the ground; a drill bit which is inserted in the out casing after passing therethrough, a connecting rod which is connected with the drill bit and transmits the torque delivered from outside thereto. Therefore, the present invention enables insertion of various polygonal out casings into the ground.

Description

Ground drilling device and ground drilling method using the same

The present invention relates to a ground drilling device used in the construction field and a ground drilling method using the same.

The technique of drilling long holes in the ground is also called drilling or boring. The underground walls can be formed by planting steel pipes or inserting solid bodies through perforations. Although various types of drilling methods have been proposed, FIG. 1 shows a drilling system using an out casing (steel pipe) 1 and a bit part 2 as a typical conventional drilling method.

As the bit part 2 rotates inside the outer casing 1 as shown in FIG. 1, the earth and sand of a bottom surface are grind | pulverized. The pulverized product is emitted to the upper part of the out casing 1 while the air injected into the connecting rod 3 connected to the bit part 2 is injected at a high pressure.

At this time, the out casing 1 is inserted in the ground by rotating the out casing 1 in the direction opposite to the rotation direction of the bit part 2.

However, there is no structure that is guided when the plurality of out casings 1 are inserted adjacent to each other in such a conventional manner, so that the bottom arrangement of the out casings 1 adjacent to each other becomes irregular as shown in FIG. 2 to form a perfect underground wall. It's hard.

However, in the case of the conventional out casing 1, the grooves and protrusions could not be formed structurally on the outer circumference because of rotation during insertion of the ground, and the outer circumferential surface had to be circular.

The present invention is to provide a ground drilling apparatus and ground drilling method using an out casing having a polygonal cross section of the outer circumferential surface.

According to one aspect of the invention, the outer peripheral surface of the outer casing is a polygon, the blow generator coupled to the out casing so that the out casing is inserted into the ground and strikes in the longitudinal direction of the out casing, the out casing There is provided a ground perforation device including a bit portion formed to be inserted therethrough, and a connection rod connected to the bit portion to transfer a rotational force transmitted from the outside to the bit portion.

The outer circumferential surface of the out casing may be rectangular. In addition, the cross section of the inner circumferential surface of the out casing may be a circular through.

On the other hand, the blow generator may include a clamp installed to hold the side of the out casing, and a driving unit for applying a blow to the clamp.

According to another aspect of the present invention, (a) preparing an outer casing having a polygonal cross section of an outer circumferential surface, (b) connecting a bit portion to an end of the connecting rod and inserting the outer casing into the out casing, and (c) the out casing. There is provided a ground drilling method comprising operating a combined blow generator to strike the out casing in the longitudinal direction and to drill the ground by rotating the bit portion.

In addition, the cross-section of the inner circumferential surface of the out casing is a penetrating circular shape, and after the step (c), by (d) inserting a beam having a protrusion formed on one side inside the out casing, the edge of the other side of the beam is the out casing It may further include the step of being in close contact with the inner wall.

In addition, the beam is H-shaped, and after the step (d), (e) inserting a filler in the space consisting of the other side of the beam and the inner wall of the out casing, (f) the remaining in the outer casing inner space The method may further include inserting a ready-mixed concrete. The filler may be any one selected from the group consisting of sand, earth and sand or mixtures thereof.

On the other hand, the cross section of the inner circumferential surface of the out casing is a circular through, and after the step (c), (g) a projection is formed on one side inside the out casing, the other side is a beam combined with a filler that occupies space in a half moon shape The method may further include filling a space formed between the other side of the beam and the out casing. In this case, the beam is H-shaped, and after the step (g), (h) may further comprise the step of inserting the ready-mixed concrete into the remaining space of the out casing. Filler may be any one selected from the group consisting of strofoam, vinyl.

As described above, a polygonal out casing can be inserted into the ground using a blow generator, so that the contact surface between the out casings is widened. In addition, one side of the beam to be inserted into the out casing by filling the filler can be easily exposed to the outside later.

1 is a cross-sectional view of the ground drilling apparatus according to the prior art.

Figure 2 is a perspective view of the underground wall formed by the ground drilling method according to the prior art.

Figure 3 is a longitudinal sectional view of the lower end of the out casing of the ground drilling apparatus according to the first embodiment of the present invention and a perspective view of the bit portion and the connecting rod embedded in the out casing.

Figure 4 is a side view of the blow generator coupled to the upper end of the out casing according to the first embodiment of the present invention.

Fig. 5 is a perspective view of the out casing according to the second embodiment of the present invention.

6 is a cross-sectional view of the wall formed on the ground by the out casing according to the second embodiment of the present invention.

7 is a cross-sectional view of an out casing in which the inner cross section is circular and the outer cross section is rectangular as a third embodiment of the present invention.

8 is a cross-sectional view of various out casings according to a fourth embodiment of the present invention.

9 is a flow chart of the ground drilling method according to a fifth embodiment of the present invention.

10 to 14 is a process chart of the ground drilling method according to a fifth embodiment of the present invention.

An out casing having a polygonal cross section of an outer circumference, a blow generator coupled to the out casing to insert the out casing into the ground, and a blow generator striking in the longitudinal direction of the out casing, and a bit formed to be inserted through the out casing The ground and the ground drilling apparatus is connected to the bit portion and includes a connecting rod for transmitting the rotational force transmitted from the outside to the bit portion.

DETAILED DESCRIPTION Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are intended to explain in detail enough to enable those skilled in the art to easily carry out the present invention. This does not mean that the spirit and scope of the present invention is limited.

Figure 3 is a longitudinal sectional view of the lower end of the out casing of the ground drilling apparatus according to the first embodiment of the present invention and a perspective view of the bit portion and the connecting rod embedded in the out casing. 4 shows a side view of the blow generator coupled to the upper end of the out casing according to the first embodiment of the invention.

3 and 4, the ground drilling apparatus 30 of the present embodiment is coupled to the out casing 31 so that the out casing 31 and the out casing 31 are inserted into the ground. A blow generator (34) that strikes in the longitudinal direction of the (31), a bit portion (32) formed to be inserted through the out casing (31), and the bit portion (32) connected to the bit portion (32) It includes a connecting rod 33 for transmitting the rotational force transmitted from the outside to 32.

Referring to the operation method of the ground drilling device 30 of the present embodiment, first, the bit portion 32 is coupled to the end of the connecting rod 33 which is rotated by receiving external power. The thermal rod 33 and the bit portion 32 may be detachably coupled or may be made of an integral casting.

At the end of the bit part 32, a plurality of protrusions are made of cemented carbide, and these protrusions are made by crushing rock in the ground. As shown in FIG. 3, the bit part 32 coupled to the end of the connecting rod 33 is installed through the out casing 31. The combined outer casing 31 and the bit part 32 are placed on the ground to be punched, and ground drilling is started.

At this time, as shown in FIG. 3, the bit part 32 rotates, and the out casing 31 strikes in the longitudinal direction. Strike in the present embodiment is a linear movement made in the longitudinal direction of the out casing 31, a concept including a linear movement made by the strike. In addition, the range in which the outer casing 31 is shaken to some extent by the impact is also a concept included in the striking motion of the out casing 31 of the present embodiment.

Due to the impact of the longitudinal ice direction of the out casing 31, the out casing 31 easily penetrates the space removed by the bit portion 32 and is inserted into the ground. In this way, the outer casing 31 of the out casing 31 does not need to be circular because the out casing 31 does not rotate in the same direction as the bit portion 32 or in the opposite direction, but strikes in the longitudinal direction.

On the other hand, the blow generator 34 is a device that can be attached and detached to the out casing 31, it is largely composed of a clamp (341) for fastening the drive unit 342 and the out casing 31 and the drive portion 341 for generating a blow. . Inside the drive part 34, a motor or other internal combustion engine is comprised. The power of the drive unit 34 may be converted into a striking motion through the conversion process. 4 shows a state in which the blow generator 34 is coupled to the outer circumferential surface of the out casing 31.

As in the present embodiment, the outer casing 31 is not rotated, but is inserted into the ground by hitting in the longitudinal direction, so that the outer circumferential surface of the out casing 31 can be variously modified. Since the shape of the out casing can be variously modified, it is not necessary to insist on a shape having a circular cross section of the outer circumferential surface as in the prior art.

In the following example, the Example which modified the form of the outer peripheral surface of an out casing is demonstrated.

5 is a perspective view of an out casing according to a second embodiment of the present invention, and FIG. 6 is a cross-sectional view of a wall formed on the ground with an out casing according to a second embodiment of the present invention.

5 shows the out casing 51 having a rectangular cross section of its outer circumferential surface. Since the outer circumferential surface has a planar shape instead of a circular shape, when the plurality of out casings 51 are connected and inserted into the ground as shown in FIG. 6, the contact area increases. When the underground wall is formed in this way, water leakage occurs between the contact surfaces of the out casing 51, or the soil is pushed out.

Even if the cross section of the outer circumferential surface of the out casing 51 is rectangular as in the present embodiment, since the out casing 51 is inserted into the ground in the longitudinal direction by the blow generator of the first embodiment, the difficulty of the ground drilling process is There will be no.

Rather, the contact force of the neighboring out casing 51 has an advantage of increasing the adhesion.

7 is a cross-sectional view of an out casing in which the inner cross section is circular and the outer cross section is rectangular as a third embodiment of the present invention. It may be manufactured by inserting a circular existing out casing 712 into a rectangular inner casing 711.

When the inner cross section is maintained in a circular shape as shown in FIG. 7, even if the pressure due to external soil is applied to the out casing 71, it is possible to maintain the mold by dispersing the pressure. In addition, it is possible to insert the existing bit portion.

On the other hand, when the external cross section is made of a polygon (this embodiment is a quadrangle), as shown in FIG. 6 of the second embodiment, the contact area between neighboring out casings is increased to prevent soil or water from seeping through the out casings. .

8 is a cross-sectional view of various out casings according to the fourth embodiment of the present invention.

FIG. 8A shows the out casing 81 in the form of connecting several out casings of FIG. 7. 8B illustrates the out casing 82 in which the protrusion 811 and the guide groove 812 are formed on the outer circumferential surface thereof. When the plurality of such out casing 82 is connected to form an underground wall, the engagement becomes firm, and the arrangement of the out casing 82 is neat.

On the other hand, the out casing 82 having a sawtooth outer peripheral surface as shown in (c) of Figure 8 can be made.

In addition, the out casing 84 as shown in Figure 8 (d) can be combined with the A-shaped auxiliary material to the existing circular casing.

In this way, even when the out casing of polygons such as (a), (b), (c), and (d) of FIG. 8 is used, the reason why the underground wall can be formed without difficulty is by using the blow generator of the first embodiment. This is because the outer casing is inserted into the ground by hitting.

9 is a flow chart of the ground drilling method according to a fifth embodiment of the present invention, Figures 10 to 14 is a process chart of the ground drilling method according to a fifth embodiment of the present invention. In explaining the ground drilling method of this embodiment, the drawings of the first to fourth embodiments described above will also be described.

S51 is a step of preparing an outer casing whose cross section of the outer circumferential surface is polygonal. As shown in FIG. 10, the outer casing 50 has a rectangular outer circumferential surface. The cross section of the inner circumferential surface may be the same as or different from the cross section of the outer circumferential surface, depending on whether one more circular casing is coupled as shown in FIG. 10.

S52 is a step where the bit is connected to the end of the connecting rod and inserted into the out casing. The structure of this embodiment is the same as that of FIG. 3, and the bit portion is a portion necessary for drilling the ground.

S53 is a step of drilling the ground by hitting the out casing in the longitudinal direction by operating the blow generator coupled to the out casing, and by rotating the bit portion. As described above, the method of inserting the out casing into the ground using the blow generator without rotating the casing is described above.

When the out casing 51 is continuously inserted adjacent to the ground, it becomes as sectional drawing of FIG. At this time, the cross section of the inner circumferential surface of the perforated out casing 51 is a perforated circle through which the beam 51 can be inserted as shown in FIG. 11. Beam 51 may be H-shaped.

As shown in FIG. 13, a protrusion 523 is formed at one side 521 of the beam 51. The projection 523 is such that when the H-shaped beam 52 is inserted into the inner wall of the out casing 51, one side 521 maintains a separation distance from the inner wall, whereas the corner of the other side 522 is in close contact with the inner wall. Be sure to As a result, as shown in FIG. 11, when the H-shaped beam 52 is inserted, the other side 522 of the beam 52 and the inner wall of the out casing 52 have a half moon-shaped closed shape.

Thereafter, as shown in FIG. 12, the filling material 53 is filled in the half moon-shaped space formed by the other side of the beam 52 and the inner wall of the outer casing 52, and the ready-mixed concrete is disposed in the remaining space of the outer casing 52. 54). The rebar may be filled with the ready-mixed concrete 54. Filler 53 may be any one selected from the group consisting of sand, earth and sand or mixtures thereof.

Meanwhile, the filler 53 may have a structure coupled to the other side 522 of the H-shaped beam 52 in a half moon shape as shown in FIG. 13B. The material of the filler 53 may be any one of styrofoam, vinyl, and plywood. When the filler 53 is previously coupled to the other side 522 of the beam 52 as shown in FIG. 13B, the ready-mixed concrete 54 may be filled in the remaining space after the beam 52 is inserted.

As shown in FIG. 14, after several out casings 52 are inserted into the ground 100 to form an underground wall, some of the ground is removed and the exposed out casing 51 vertically forms a beam 52. It is necessary to remove a part of the out casing 51 which surrounds.

At this time, when the out casing 51 is removed, the filler 53 is exposed as shown in FIG. 14. As described above, since the filler 53 is a material that can be easily removed, such as sand, earth and sand, styrofoam, the filler 52 may be easily exposed. In the related art, when a part of the out casing 51 is removed, concrete is exposed, and thus the beam 52 may be exposed only by removing the concrete. It took a lot of time and effort to remove this concrete.

Since the above has been described only with respect to some of the preferred embodiments that can be implemented by the present invention, the scope of the present invention, as is well known, should not be construed as limited to the above embodiments, the present invention described above It will be said that both the technical idea and the technical idea which together with the base are included in the scope of the present invention.

The present invention can insert a polygonal out casing into the ground using a blow generator to widen the contact surface between the out casings. In addition, one side of the beam to be inserted into the out casing by filling the filler can be easily exposed to the outside later.

Claims

Out casing whose cross section of an outer peripheral surface is polygonal;

A blow generator coupled to the out casing to strike the out casing in the longitudinal direction such that the out casing is inserted into the ground;

A bit portion formed to be inserted through the out casing;

Ground boring device comprising a connection rod connected to the bit unit for transmitting a rotational force transmitted from the outside to the bit unit.
The method of claim 1,

The ground perforation device, characterized in that the outer peripheral surface of the out casing is a square.
The method of claim 2,

Geotechnical boring apparatus, characterized in that the cross section of the inner circumferential surface of the out casing is a perforated circle.
The method of claim 1,

The blow generator,

A clamp installed to grip a side of the out casing;

A ground drilling device comprising a drive unit for applying a strike to the clamp.
(a) preparing an outer casing having a polygonal cross section of the outer circumferential surface;

(b) a bit portion is connected to the end of the connecting rod and inserted into the out casing;

and (c) operating the blow generator coupled to the out casing, striking the out casing in the longitudinal direction, and drilling the ground by rotating the bit section.
The method of claim 5,

The cross section of the inner circumferential surface of the out casing is a penetrating circle,

After step (c),

and (d) inserting a beam having a protrusion formed on one side inside the out casing, so that the edge of the other side of the beam is in close contact with the inner wall of the out casing.
The method of claim 6,

The beam is H-shaped,

After step (d),

(e) inserting a filler into a space formed by the other side of the beam and the inner wall of the out casing;

and (f) inserting a ready-mixed concrete into the remaining outer casing inner space.
The method of claim 7, wherein

The filler is ground, characterized in that any one selected from the group consisting of sand, earth or mixtures thereof.
The method of claim 5,

The cross section of the inner circumferential surface of the out casing is a penetrating circle,

After step (c),

(g) a protrusion is formed at one side inside the out casing, and the other side is inserted into a beam combined with a filler filling a space in a half moon shape, so that the space formed between the other side of the beam and the out casing is filled. Geotechnical drilling method further comprising.
The method of claim 9,

The beam is an H-shaped beam,

After step (g),

(H) further comprising the step of inserting the ready-mixed concrete in the remaining space of the out casing.
The method of claim 9,

The filler is ground boring method, characterized in that any one selected from the group consisting of strofoam, vinyl, plywood.