KR100627642B1 - Apparatus for pressing steel pipe and method for pressing steel pipe using the same - Google Patents

Abstract

Apparatus for press-fitting steel pipe into the ground and steel pipe press-fitting method using the same, in which the voids and over-cutting parts generated on the outer circumferential surface of the propulsion pipe by the grouting during the steel pipe propulsion press-in work, ie, the leading part generated during the propulsion Provided is a steel pipe indentation apparatus and a steel pipe indentation method using the same, which are configured to prevent settlement of the upper ground and increase propulsion efficiency by reinforcing the overhang portion.

Steel pipe indentation apparatus according to the present invention is formed in the shape of a pipe is provided with at least one injection hole penetrating the side wall, the leading steel pipe is pressed into the ground by an external force; And a supply pipe coupled to an inner inlet of the injection hole in a removable structure and supplying a sealing material to the outside of the lead steel pipe.

Steel pipe indentation apparatus according to the present invention, by using the grouting operation during the propulsion to reinforce the ground of the outer peripheral surface of the propulsion pipe to prevent settlement of the upper ground, thereby reducing the friction between the leading steel pipe and the earth and sand, Even if the number is increased, there is an advantage that the pressure that the sealing material is ejected does not decrease.

Steel Pipe, Indent, Grouting, Friction, Blowout

Description

Steel pipe press-fitting device and steel pipe press-fitting method using the same {APPARATUS FOR PRESSING STEEL PIPE AND METHOD FOR PRESSING STEEL PIPE USING THE SAME}

1 is a perspective view of a conventional steel pipe indentation apparatus.

2 is a longitudinal sectional view of a conventional steel pipe indentation apparatus.

3 is a perspective view showing a shape in which another leading steel pipe is further coupled to a conventional steel pipe indentation apparatus.

4 is a perspective view of a steel pipe indentation apparatus according to the present invention.

Figure 5 is a side view of the leading steel pipe applied to the steel pipe indentation apparatus according to the present invention.

Figure 6 is a cross-sectional view taken along the line A-A shown in Figure 5 the leading steel pipe applied to the steel pipe indentation apparatus according to the present invention.

7 is a cross-sectional view taken along the line B-B shown in Figure 5 the leading steel pipe applied to the steel pipe indentation apparatus according to the present invention.

8 is a cross-sectional view showing an internal configuration of a steel pipe indentation apparatus according to the present invention.

9 to 11 are schematic views sequentially showing an example of use of the steel pipe indentation apparatus according to the present invention.

12 is a perspective view showing a shape in which a plurality of leading steel pipes applied to the steel pipe indentation apparatus according to the present invention are connected.

Figure 13 is a perspective view of a second embodiment of the leading steel pipe applied to the steel pipe indentation apparatus according to the present invention.

14 is a cross-sectional view of a second embodiment of a lead steel pipe applied to the steel pipe indentation apparatus according to the present invention.

15 is a perspective view of a third embodiment of a lead steel pipe applied to the steel pipe indentation apparatus according to the present invention.

16 is a cross-sectional view of a third embodiment of a lead steel pipe applied to the steel pipe indentation apparatus according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: leading steel pipe 110: inlet

200: distribution means 210: spout

300: supply pipe 400: press

The present invention relates to a device for press-fitting a steel pipe to the ground and a steel pipe press-fit method using the same, and more particularly, the steel pipe press-in is configured to reinforce the surrounding ground by increasing the propulsion efficiency by grouting in parallel when the steel pipe propulsion press-in operation It relates to a device and a method for indenting a steel pipe using the same.

Method to push and inject pipe-shaped steel pipes so that the target objects can be purchased without affecting traffic flows or ground water without breaking roads, rivers, railways, etc. This has been commercialized in recent years.

In general, the steel pipe propulsion pressurization method is to dig a tunnel slightly longer than the length of the unit steel pipe in the ground at the beginning of the point where the pipe is to be buried, and then lay the steel pipe within the tunnel so that the tip of the steel pipe is directed toward the side wall of the tunnel. Presses the steel pipe into the ground by pushing the rear end of the steel pipe forward by using a hydraulic jack, discharges the earth and sand inside the steel pipe by manpower, and then connects the other steel pipe to the rear end of the prevailing steel pipe. It is a non-adhesive excavation method constructed through.

However, in the case of the above method, when the propulsion steel pipe is progressed due to the change in the soil quality generated during the press-fitting of the steel pipe, the ground is disturbed and loosened, which causes problems in the stability of the ground. In addition, there is a problem in that damage is caused to the upper structure by deforming the ground or causing residual settlement because the ground is carried out by removing foreign matters, ground roads, amber stones, and stones from the ground.

In order to solve the above problems, a steel pipe indentation apparatus having a grouting nozzle and a steel pipe indentation method using the same (Korean Patent Publication No. 10-2005-0102069) have been proposed.

Hereinafter, a conventional steel pipe indentation apparatus will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a conventional steel pipe indentation apparatus, Figure 2 is a longitudinal sectional view of a conventional steel pipe indentation apparatus.

As shown, the conventional steel pipe indentation apparatus provided with a nozzle for grouting is composed of a leading steel pipe 10, the inlet steel pipe 20, the nozzle 30, and the supply pipe 40.

The leading steel pipe 10 is a pipe press-fitted into the ground, and is formed in a pipe shape, and a plurality of through-holes 11 penetrating the inside are formed at equal intervals in the longitudinal direction and the circumferential direction. And the through-hole 11 is provided with a nozzle 30 to be described later.

The inlet steel pipe 20 is formed in a pipe shape smaller than the diameter of the lead steel pipe 10 is in close contact with the inner peripheral surface of the lead steel pipe 10 in the longitudinal direction, one side introduced into the lead steel pipe 10 side is formed in a clogged shape. do. And the circumferential surface of the inlet steel pipe 20 is formed with a plurality of through-holes at equal intervals in the longitudinal direction. Here, the through hole is formed at a position corresponding to the through hole 11 of the leading steel pipe 10 so that the through hole and the through hole 11 are configured to communicate with each other, the sealing material is forced into the inlet steel pipe 20 from the outside It is introduced into the nozzle 30 through the through and through holes (11).

The nozzle 30 is formed in a tetrahedral shape, the front side is tapered in a pointed shape, and a flow path 33 is formed therein. In addition, the coupling part 31 is formed at the inlet side of the flow path 33, and the coupling part 31 is introduced into the through hole 11 and the inlet steel pipe 20 of the leading steel pipe 10 to be coupled thereto. By the nozzle 30 is coupled to the outer peripheral surface of the leading steel pipe (10). Here, the nozzle 30 is installed in a manner that is installed in a position where the through-hole 11 of the lead steel pipe 10 is formed. Therefore, the inside of the inlet steel pipe 20 and the flow path 33 of the nozzle 30 is configured to be connected to each other. A plurality of outlets 32 connected to the flow passage 33 are formed on the outer surface of the nozzle 30 so that the sealing material introduced into the flow passage 33 of the nozzle 30 is discharged to the outside through the outlet 32.

The supply pipe 40 is for injecting the sealing material into the inlet steel pipe 20, and is typically made of a flexible material such as a synthetic resin tube, and one end thereof is coupled to one side of the inlet steel pipe 20. The sealing material supplied from the supply pipe 40 is ejected to earth and sand through the inflow steel pipe 20 and the nozzle 30.

In the ground of the beginning of the point where the pipe is to be buried, a tunnel slightly longer than the length of the unit steel pipe is placed, and the hydraulic jack is laid with the press-fitting device laid in the shaft so that the tip of the lead steel pipe 10 is directed toward the side wall of the tunnel. The sealing material is forcibly injected in every step of pressing the lead steel pipe 10 into the ground by pushing the rear end of the lead steel pipe 10 forward using the back and the like.

The sealing material is formed by stirring 5 to 7 parts by weight of the lubricant, 3 to 5 parts by weight of bentonite, and 88 to 92 parts by weight of water into the stirring device. The formed sealing material is forcibly introduced into the inlet steel pipe 20 connected to the pipe by using a low pressure isostatic grout pump or the like. The forcedly introduced sealing material flows into the hydraulic steel pipe 20, and then is forcibly introduced into the nozzle 30 through the through-hole and through-hole 11, and is discharged to the outside of the nozzle 30 through the outlet 32.

The sealing material discharged to the outside of the nozzle 30 reduces the frictional force between the leading steel pipe 10 and the earth and sand in order to facilitate the leading steel pipe 10 smoothly due to the characteristics of the sealing material. The bentonite contained in the sealing material swells to fill the voids around the lead steel pipe 10 and to stabilize the ground.

3 is a perspective view showing a shape in which another leading steel pipe is further coupled to a conventional steel pipe indentation apparatus.

In order to continuously press two or more lead steel pipes 10, after separating the supply pipe 40 from the inlet steel pipe 20 while pressing one lead steel pipe 10, as shown in FIG. Likewise, the other leading steel pipe 10a is connected to the end of the leading steel pipe 10 and press-fitted. When the second lead steel pipe 10a is completed, the supply pipe 40 is coupled to the inlet steel pipe 20a of the second lead steel pipe 10a to inject a sealing material.

The inflow process of the sealing material as described above can be stable construction by repeatedly performing the lead steel pipe reinsertion.

However, the conventional steel pipe indentation device configured as described above, when the two or more leading steel pipes (10, 10a) continuously press the respective inlet steel pipes (20, 20a) must be exactly matched to the sealing material injection is difficult, so difficult to press the steel pipe There is, the inlet steel pipe 20 of the leading steel pipe 10 located at the tip is formed to open only one side, but additionally the inlet steel pipe 20a of the leading steel pipe 10a is press-fitted so that both sides are formed to open It is inconvenient to separately manufacture and use the lead steel pipe 10 and the lead steel pipe 10a which are additionally press-fitted, and the inflow steel pipes 20 and 20a must be combined inside the lead steel pipes 10 and 10a. Therefore, there is a disadvantage that the manufacturing process is difficult.

In addition, since the supply pipe 40 needs to be repeatedly desorbed every time the lead steel pipes 10 and 10a are pressurized into the ground, it takes a lot of time for the steel pipe indentation process, and the inflow increases as the number of lead steel pipes connected continuously increases. Since the overall length of the steel pipe is also long, there is a problem that a large pressure is required to send the sealing material to the end of the inlet steel pipe.

Conventional steel pipe indentation apparatus has a disadvantage in that the nozzle 30 for injecting the sealing material is formed in a projection shape, the nozzle 30 interferes with the indentation of the leading steel pipe (10).

The present invention has been proposed to solve the above problems, it is easy to manufacture and use, even if the number of steel pipes to be pressurized does not need to increase the pressure for injecting the sealing material, the resistance when pressed into the ground An object of the present invention is to provide a steel pipe indentation apparatus configured to be reduced and a steel pipe indentation method using the same.

Steel pipe indentation apparatus according to the present invention for achieving the above object,

A lead steel pipe formed in a pipe shape in which at least one injection hole penetrating the side wall is provided, and pressed into the ground by an external force; And

A supply pipe coupled to an inner inlet of the injection hole in a removable structure, and supplying a sealing material to the outside of the lead steel pipe;

It is configured to include.

The injection port is arranged long in the longitudinal direction of the lead steel pipe.

The injection holes are formed in two or more rows so as to form equal intervals.

Steel pipe indentation apparatus according to the present invention further comprises an opening and closing means for opening and closing the injection port.

The injection hole is formed with a female thread on the inner side,

The opening and closing means is a screw coupled to the injection hole in a screwing structure.

The supply pipe is coupled to the inlet and screwed structure.

It is coupled to the outer surface of the lead steel pipe to cover the inlet, the portion corresponding to the inlet is spaced apart from the outer surface of the lead steel pipe further comprises at least one distribution means that is formed with a plurality of through-hole ejection openings do.

The distribution means is formed long in the longitudinal direction of the lead steel pipe.

The dispensing means is formed in an arc or bent cross section.

The distribution means is formed to be inclined so that the end of the side which is pressed into the ground has an acute angle with the outer surface of the lead steel pipe.

The jet port is formed such that the outer inlet is inclined in a direction opposite to the pressing direction of the lead steel pipe.

Steel pipe indentation method according to the present invention,

Press-fitting the pipe-shaped lead steel pipe having one or more injection holes to penetrate the sidewall into the ground;

Connecting a supply pipe to the injection hole and ejecting a sealing material to the outside of the lead steel pipe through the injection hole; And

Placing the leading end of another leading steel pipe at a rear end of the leading steel pipe, and pressing the leading steel pipes into the ground;

It is configured to include.

The method may further include closing the injection hole before introducing the lead steel pipe into the ground.

When the press-fit of the leading steel pipe and the ejection of the sealing material is completed, further comprising the step of closing the inlet.

Pressing the lead steel pipe into the ground and injecting a sealing material to the outside of the lead steel pipe may be overlapped in whole or in part.

Hereinafter, a steel pipe indentation apparatus and a steel pipe indentation method using the same will be described in detail with reference to the accompanying drawings.

Figure 4 is a perspective view of a steel pipe indentation apparatus according to the present invention, Figure 5 is a side view of the leading steel pipe applied to the steel pipe indentation apparatus according to the present invention, Figure 6 is a view of the leading steel pipe applied to the steel pipe indentation apparatus according to the present invention. 5 is a cross-sectional view taken along line AA, and FIG. 7 is a cross-sectional view taken along line BB shown in FIG. 5 of a lead steel pipe applied to the steel pipe indentation apparatus according to the present invention.

As shown in FIGS. 4 to 7, the steel pipe indentation apparatus according to the present invention includes a leading steel pipe 100 which is formed in a pipe shape in which at least one injection hole 110 penetrates the side wall and is pressed into the ground by an external force. In one embodiment, the inlet is detachable structure is coupled to the inner inlet of the inlet 110, the supply pipe 300 for supplying the sealing material to the leading steel pipe 100 outside, and a plurality of through-hole-shaped outlet 210 is formed in the inlet It is configured to include a distribution means 200 is coupled to the outer surface of the leading steel pipe 100 to cover (110).

In this case, the distribution means 200 is configured to evenly distribute the sealing material supplied from the supply pipe 300 and ejected to the outside of the fresh steel pipe 100 through the injection hole 110 to the outside surface of the fresh steel pipe 100, , The portion corresponding to the inlet 110 is spaced apart from the outer surface of the lead steel pipe 100 by a predetermined interval, the edge portion is in close contact with the outer surface of the lead steel pipe 100. Therefore, the sealing material introduced into the distribution means 200 is spread in the longitudinal direction of the lead steel pipe 100 along the inner space of the distribution means 200, and is ejected to the outside of the lead steel pipe 100 through the spout 210. .

As such, the sealing material ejected to the outside of the lead steel pipe 100 is introduced into the voids and over-cutting portions generated when the lead steel pipe 100 is pushed into the ground, and the lead steel pipe 100 is press-fitted. Not only to strengthen the ground and prevent the subsidence of the upper ground, it also serves as a lubricant to reduce the frictional force of the leading steel pipe 100 and soil so that the leading steel pipe 100 can be more easily press-fit. Therefore, the user has an advantage that can press the leading steel pipe 100 with a smaller force.

The injection hole 110 is arranged in the longitudinal direction of the lead steel pipe 100 so that the sealing material flowing through the injection hole 110 can be evenly transmitted to the outer surface of the lead steel pipe 100, the distribution means 200 also each injection hole It is formed long in the longitudinal direction of the lead steel pipe 100 to cover the (110). In the present embodiment, the injection hole 110 and the distribution means 200 are provided on the upper and lower sides, left and right sides of the leading steel pipe 100 so as to be evenly transmitted to the four sides of the leading steel pipe 100, the injection hole 110 and the distribution means 200 ) Is not limited thereto, and may be variously changed according to various kinds of conditions, such as earth and sand conditions of the ground or the material and shape of each member. At this time, the injection port 110 and the distribution means 200 is preferably formed in at least two rows to form an equal interval.

When the distribution means 200 is formed long in the longitudinal direction of the lead steel pipe 100, that is, in the indentation direction, the distribution means 200 adjusts the indentation direction when the lead steel pipe 100 is press-fitted into the ground (G). It has the advantage of acting as a guide vane. In addition, since the distribution means 200 applied to the present invention has a reduced frictional force with the earth and sand compared to the nozzle 30 of the conventional steel pipe indentation apparatus formed in the shape of a plurality of protrusions, the propulsion of the leading steel pipe 100 more easily. It also has the advantage of doing so.

When the pressurization of the lead steel pipe 100 starts, the sealing material does not need to be ejected to the outside of the lead steel pipe 100, and thus, the lead steel pipe 100 is press-fitted in a state in which the supply pipe 300 is separated. ) In the open state, the injection hole 110 is blocked by the earth and sand when the supply pipe 300 is to be coupled to the leading steel pipe 100 for the injection of the sealing material problem that the supply pipe 300 can not be properly coupled have. In addition, when the sealing material is filled in the dispensing means 200, when the injection hole 110 is maintained in an open state, the sealing material flows into the leading steel pipe 100 through the injection hole 110 so that the waste of the sealing material is reduced. There is a problem that the voids may be formed in the distribution means 200.

Therefore, the steel pipe indentation apparatus according to the present invention is preferably configured to further include an opening and closing means for opening and closing the inlet 110 according to the user's selection. In the present embodiment, the injection hole 110 has a female thread formed on the inner side thereof, and the screw 120 coupled to the injection hole 110 in a screwing structure is applied as an opening and closing means. When the user press-fits the leading steel pipe 100 without the sealing material injection, the screw 120 is coupled to the injection hole 110, and when the user wants to couple the supply pipe 300 to the injection hole 110, the user loosens the screw 120 and the injection hole. Separate from (110).

This embodiment is the simplest example of the structure of the opening and closing means, the opening and closing means is not limited to such a structure can be freely changed according to the user's selection.

In addition, in order to reduce the friction between the distribution means 200 and the earth and sand when the lead steel pipe 100 is pressed into the ground, the dispensing means 200 is the end of the side being pressed into the ground outside the lead steel pipe 100 It is formed to be inclined to have an acute angle with the side. At this time, when the opposite end of the press means of the distribution means 200, that is, the rear end is formed in a shape bent at a right angle, the pressure change of the earth and sand is suddenly generated at the rear end portion of the distribution means 200 leading steel pipe 100 Since there is a possibility of inhibiting the indentation of the, the distribution means 200 is preferably formed at both ends inclined as in this embodiment so that the operator can more easily indent the leading steel pipe (100).

In addition, when the leading steel pipe 100 is pressurized into the ground, the earth and sand may be introduced through the spout 210, in this way, when the soil is introduced through the spout 210, the spout 210 is blocked by the soil to eject the sealing material. There is a problem that this may not be done normally. Therefore, the outlet 210 formed in the distribution means 200 is inclined in the direction opposite to the indentation direction of the leading steel pipe 100 to prevent the inflow of soil, that is, the direction in which the sealing material is ejected and the leading steel pipe 100 It is preferable that this indentation direction is formed to have an obtuse angle of 90 degrees or more.

8 is a cross-sectional view showing an internal configuration of a steel pipe indentation apparatus according to the present invention.

Since the supply pipe 300 applied to the present invention should be freely detachable from the injection hole 110 according to a user's selection, the end of the supply pipe 300 on the side from which the sealing material is ejected has a structure capable of screwing into the injection hole 110. Is formed.

At this time, the supply pipe 300 applied to the present invention may be coupled to the inlet 110 detachable structure, such as the coupling structure using the interference fitting coupling structure or clip in addition to the screw coupling structure shown in this embodiment.

In addition, the supply pipe 300 may be coupled to all the injection holes 110, respectively, or may be coupled to only some of the injection holes 110 as in the present embodiment.

9 to 11 is a schematic diagram showing a use example of the steel pipe indentation apparatus according to the present invention in sequence, Figure 12 is a perspective view showing a shape in which a plurality of leading steel pipes applied to the steel pipe indentation apparatus according to the present invention.

In order to press the leading steel pipe 100 into the ground (G) using the steel pipe indentation apparatus according to the present invention, first, the ground is dug to form a pit, and the leading steel pipe 100 is laid sideways to one end to the side wall of the pit. 9, the lead steel pipe 100 is press-fitted into the ground G by applying pressure to the other end of the lead steel pipe 100 using the presser 400 as shown in FIG. 9. At this time, the injection hole 110 formed in the leading steel pipe 100 is sealed with a screw 120 in advance so that the soil does not flow.

When the press fitting of the leading steel pipe 100 is completed, the screw 120 coupled to the inlet 110 is removed and removed, and the supply pipe 300 is coupled to the inlet 110, through the supply pipe 300 and the inlet 110. The sealing material is ejected to the outside of the lead steel pipe (100).

Sealing material ejected to the outside of the lead steel pipe 100 may be applied with cement or mortar in order to secure the periphery in which the lead steel pipe 100 is press-fitted, while filling the voids around the lead steel pipe 100 and at the same time stabilize the ground It may also be formulated to include bentonite. In addition, the sealing material maintains a liquid state having a viscosity until solidification, thereby reducing the friction between the lead steel pipe 100 and the earth and sand also serves as a lubricant to smoothly promote the lead steel pipe 100.

In the state shown in Figure 10, if you want to press one more leading steel pipe 100, the end of the other leading steel pipe (100a) in close contact with the rear end of the leading steel pipe 100 pressed into the ground (G) and then press Using 400, the rear end of the second leading steel pipe 100a is pushed into the ground (G).

The sealing material may be ejected during the press-in of the second lead steel pipe (100a) to facilitate the propulsion of the lead steel pipe 100, may be ejected after the press-fit of the second lead steel pipe (100a) is completed. In addition, in order to eject the sealing material not only to the first leading steel pipe 100 but also to the outer circumferential surface of the second leading steel pipe 100a in order to more easily press-fit the leading steel pipes 100 and 100a, a supply pipe The sealing material may be injected after the 300 is further connected to the distribution means 200a of the second leading steel pipe 100a. At this time, the process of connecting the supply pipe 300 to the distribution means (200a) of the second leading steel pipe (100a) and injecting the sealing material is the process of injecting the sealing material into the distribution means (200) of the first leading steel pipe (100); Since the same, detailed description thereof will be omitted.

As described above, the steel pipe indentation apparatus according to the present invention does not need to match the inlet steel pipes as in the conventional steel pipe indentation apparatus when continuously indenting a plurality of leading steel pipes 100, and the coupling of the supply pipe 300 to supply the sealing material. And since there is no need to repeat the separation there is an advantage that the lead steel pipe 100 press-fit operation becomes easier.

In addition, since the supply pipe 300 for supplying the sealing agent is directly coupled to the first leading steel pipe 100 regardless of the number of the leading steel pipe 100, the number of the leading steel pipe 100 press-fitted into the ground (G) is Even if it is increased, there is an advantage that the pressure at which the sealant is ejected does not decrease.

13 is a perspective view of a second embodiment of a lead steel pipe applied to the steel pipe indentation apparatus according to the present invention, Figure 14 is a cross-sectional view of a second embodiment of the lead steel pipe applied to the steel pipe indentation apparatus according to the present invention.

As shown in FIG. 7, the distribution means 200 may be formed in an arc-shaped cross section, or may be formed in a shape bent such that its outer edges are sharp as shown in FIGS. 13 and 14.

As such, when the distribution means 200 is formed in a bent shape, friction between the earth and sand is further reduced because the sand can be more easily dug between the earth and sand, and thus, the press-fit of the lead steel pipe 100 is easier.

At this time, the number of bending of the distribution means 200 is not limited to one time as in this embodiment and may be variously changed according to other conditions.

15 is a perspective view of a third embodiment of a lead steel pipe 100 applied to the steel pipe indentation apparatus according to the present invention, Figure 16 is a cross-sectional view of a third embodiment of the lead steel pipe 100 applied to the steel pipe indentation apparatus according to the present invention to be.

The steel pipe indentation apparatus according to the present invention may be configured without the distribution means 200 as shown in FIGS. 15 and 16. In this case, the effect of evenly spreading the sealing material may be somewhat reduced, but the structure is simpler and there is an advantage that the friction between the leading steel pipe 100 and the soil is minimized.

At this time, by increasing the number of the injection hole 110 may prevent the phenomenon that the sealing material does not spread evenly.

As mentioned above, although this invention was demonstrated in detail using the preferable embodiment, the scope of the present invention is not limited to a specific embodiment, Comprising: It should be interpreted by the attached Claim. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

The steel pipe indentation apparatus according to the present invention has the advantage of being able to reinforce the disturbed ground due to the propulsion, easy to manufacture and use, and to reduce friction between the leading steel pipe and the soil.

In addition, by using the steel pipe press-fit method according to the present invention, even if the number of press-fitted steel pipes is increased, the pressure from which the sealing material is ejected is not lowered, and it is not necessary to adjust the angle of each lead steel pipe, thereby simplifying the continuous press-fit process of the lead steel pipes. Has the advantage.

Claims (15)

A lead steel pipe 100 formed in a pipe shape and provided with at least one injection hole 110 penetrating the sidewalls and press-fitted into the ground (G) by an external force; Is formed in the longitudinal direction of the lead steel pipe 100 is coupled to the outer surface of the lead steel pipe 100 so as to cover the injection hole 110, the middle portion corresponding to the injection hole 110 is the lead steel pipe 100 Spaced apart from the outer surface of the) and the edge portion is in close contact with the outer surface of the lead steel pipe 100, a plurality of outlets 210 having a through-hole shape has a length at a portion spaced apart from the outer surface of the lead steel pipe 100 One or more distributing means (200) formed to be arranged in a direction; And A supply pipe 300 which is coupled to an inner inlet of the injection hole 110 in a removable structure, and supplies the sealing material to the distribution means 200 so that the sealing material is ejected through the plurality of ejection holes 210; Steel pipe indentation apparatus, characterized in that comprises a. The method of claim 1, The injection hole 110 is a steel pipe indentation apparatus, characterized in that arranged in the longitudinal direction of the leading steel pipe (100). The method of claim 2, The injection hole 110 is a steel pipe indentation device, characterized in that formed in two or more rows to form an equal interval. The method of claim 1, Steel pipe indentation apparatus, characterized in that it further comprises an opening and closing means for opening and closing the injection port (110). The method of claim 4, wherein The injection port 110 is formed with a female thread on the inner side, The opening and closing means is a steel pipe indentation apparatus, characterized in that the screw 120 is coupled to the inlet 110 in a screw coupling structure. The method of claim 5, The supply pipe 300 is a steel pipe indentation apparatus, characterized in that coupled to the inlet 110 and the screw coupling structure. delete delete The method of claim 1, The distribution means 200 is a steel pipe indentation device, characterized in that the cross section is formed in an arc or bent shape. The method of claim 1, The distribution means (200) is a steel pipe indentation apparatus, characterized in that the end of the side being pressed into the ground (G) is inclined so as to have an acute angle with the outer surface of the leading steel pipe (100). The method of claim 1, The spout 210 is a steel pipe indentation apparatus, characterized in that the outer inlet is inclined in a direction opposite to the indentation direction of the leading steel pipe (100). One or more injection holes 110 formed in a pipe shape and penetrating sidewalls are provided, and a plurality of injection holes 210 having a length of a through hole and extending in a length direction to cover the injection holes 110 are arranged in the longitudinal direction. Press-fitting the lead steel pipe (100) into the ground (G), wherein one or more distributing means (200) corresponding to the injection hole (110) are separated from the outer surface of the center portion and the edge portion is in close contact with the outer surface; After connecting the supply pipe 300 for supplying a sealing material to the injection hole 110 and supplying a sealing material into the distribution means 200 through the injection hole 110, the sealing material is ejected to the outside of the plurality of jet holes 210 Making a step; And Positioning the leading end of another leading steel pipe (100a) at the rear end of the leading steel pipe (100), and then press-fitting the leading steel pipes (100, 100a) into the ground (G); Steel pipe indentation method comprising a. The method of claim 12, Steel pipe indentation method characterized in that it further comprises the step of closing the inlet 110 before the leading steel pipe (100) into the ground (G). The method of claim 12, When the injection of the leading steel pipe 100 and the ejection of the sealing material is completed, the steel pipe indentation method further comprising the step of closing the injection port (110). The method of claim 12, Pressing the lead steel pipe (100) into the ground (G), and the step of ejecting the sealing material to the outside of the plurality of ejection openings 210, the steel pipe indentation method characterized in that overlapping in whole or in part.

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