KR102432882B1 - External packer simultaneous injection steel pipe and construction method using this - Google Patents

Abstract

The present invention relates to an external packer simultaneous injection steel pipe which is driven into the ground to carry out grouting so as to reinforce the ground and a construction method using the same. The external packer simultaneous injection steel pipe includes an injection pipe body, a drilling-side injection hole, an external packer-side injection hole, an external packer means, a partitioning means, and a grouting liquid injection means.

Description

External packer simultaneous injection steel pipe and construction method using this}

The present invention relates to an external packer co-injected steel pipe and a construction method using the same, and more particularly, to an external packer co-injected steel pipe to reinforce the ground by penetrating into the ground to perform grouting, and a construction method using the same will be.

In general, grout or grouting is used to reinforce the bearing capacity of the excavated ground when constructing tunnels in civil engineering works, or to inject fillers into cracks and cavities in the ground for leak prevention work and soil stability. The filling material (also called 'grouting material') is filled using gravity or a pump.

In this grouting method, a steel pipe is installed in the ground, a packer is installed inside the steel pipe, and the grouting material is injected and solidified, thereby making the steel pipe and the ground unitary and increasing the shear strength of the soil and bedrock. Therefore, it is a very advantageous construction method in terms of constructability and economic feasibility.

In general, the steel pipe grouting method consists of a step of drilling a soft ground, a step of inserting a steel pipe with a strainer installed into the drilling hole, a step of inserting a sealing material between the steel pipe and the drilling hole, and a step of injecting cement while installing a packer.

However, since this method inserts the steel pipe after drilling, it is difficult to insert the steel pipe due to the collapse of the drilling hole, the mixing of foreign substances, etc.

1 is a plan view showing the structure of a conventional grouting co-injected steel pipe.

As shown in FIG. 1, the conventional grouting simultaneous injection steel pipe is inserted between the inserted tube body 10 which is formed in a tubular shape and inserted into the ground, and the outer surface of the inserted tube body 10 and the inner wall surface of the perforated hole. A plurality of external packers 20 installed to be spaced apart from each other at regular intervals along the longitudinal direction of the pipe body 10, are installed to be spaced apart from each other at regular intervals along the longitudinal direction of the steel pipe body 10 inside the inserted pipe body 10 An inner gasket 30 that partitions the tube body 10, and an outer injection tube 40 that is inserted and installed in the outer packer 20 outside the insert tube body 10 so that the grouting liquid is injected into the outer packer 20, and the insert It is installed to pass through the inner gasket 30 inside the tube body 10 and is composed of a plurality of inner injection tubes 50 that allow the grouting liquid to be injected into the partitioned inner space.

The insertion tube body 10 is formed to have a certain length and penetrates the ground such as the ceiling or slope of the tunnel to reinforce the ground, thereby improving the structural stability of the structure such as the tunnel or slope.

And, after the grouting liquid is filled inside the cannulated body 10, the grouting solution is discharged to the outside of the cannulated body 10 to the inside of the ground, so that the ground around the cannulated body 10 and the cannulated body ( 10) is integrated, for this purpose, a plurality of grouting holes 11 are formed through the side of the insertion tube body 10.

The cannula body 10 is formed to have a circular cross section, and a hollow 12 is provided inside the cannula body 10 so that the grating liquid can be discharged to the outside after filling the inside. It is formed of a member.

The outer packer 20 is composed of an airtight cloth or waterproof cloth installed in a plurality of places on the outer surface of the cannulated body 10 at regular intervals along the longitudinal direction of the cannulated body 10, and the inside thereof The grouting liquid can be injected through the external injection pipe 40 .

When the external injection pipe 40 is injected into the external packer 20, the volume of the external packer 20 increases while filling the space between the outer surface of the steel pipe body 10 and the inner wall surface of the perforation hole closely. ) to seal the gap between the outer surface of the hole and the inner wall surface of the perforation hole.

The inner gasket 30 is installed at a plurality of places inside the cannulated body 10 to be spaced apart at regular intervals along the longitudinal direction of the cannulated body 10 to form a plurality of hollows 12 of the cannulated body 10 . It serves to demarcate the space.

The external injection pipe 40 is installed on the outer surface of the insertion tube body 10 so as to communicate with the external packer 20 and serves to inject the grouting solution into the external packer 20 .

The inner injection tube 50 passes through the inner gasket 30 and has the same number as the number of partitioned spaces of the insertion tube body 10 so that the ends thereof can be disposed one by one in each space partitioned into a plurality of spaces. It serves to inject the grouting solution into the partitioned space.

However, in this conventional co-injection grouting steel pipe, since the external injection pipe 40 for injecting the grouting liquid toward the external packer 20 is installed on the outside of the insertion tube body 10, the insertion tube body into the inside of the perforation hole When the external injection pipe 40 is damaged in the process of inserting (10), there is a problem that the grouting liquid cannot be properly injected into the external packer 20 side.

In addition, structural stability is improved because the inner gasket 30 that divides the hollow 12 formed in the cannulated body 10 into a plurality of partitioned spaces is each composed of a single layer. When the grouting liquid is injected through the internal injection pipe 50, the pressure is not uniformly applied to each partitioned space due to the lowered and weak adhesion, and as a result, there is a problem that the grouting simultaneous injection steel pipe is not correctly constructed.

Republic of Korea Patent No. 10-0478321

An object of the present invention is to allow accurate construction by properly partitioning the inside of a steel pipe into a plurality of spaces so that grouting is properly performed for each partition.

The present invention is characterized in that it is an external packer simultaneous injection steel pipe that penetrates into the interior of the ground to reinforce the ground by grouting.

In one embodiment, the external packer simultaneous injection steel pipe is formed in a tubular shape and inserted into a perforated hole formed in the ground, and the grouting liquid filled into the inserted tube body flows out of the inserted tube body. A plurality of perforated injection holes are formed on the side of the cannulated body so that the cannulated body is integrated with the surrounding ground, and the first injection pipe is injected so that the grouting solution can be filled into the outer packer of the external packer means. It consists of an external packer-side injection hole that is formed through a plurality of the outer side of the cannulated body so that the grouting liquid is discharged to the outside of the cannulated body. It is installed at one or more places on the outer surface of the tube body, and when the grouting liquid is injected into the inside, the volume increases and fills the space between the outer surface of the insert tube body and the inner wall surface of the perforation hole, and the outer surface of the insert tube body and the inner wall surface of the perforation hole an external packer means for sealing the gap therebetween; and partition means which are installed to be spaced apart from each other at regular intervals along the longitudinal direction of the insertion tube body and formed in one or more locations identical to those of the outer packer means to partition the inner space; and a grouting solution injection means formed inside the cannula body to inject the grouting solution through the first injection tube and the second injection tube, wherein the outer packer means is disposed between the outer surface of the insertion tube body and the inner wall surface of the perforation hole. It is formed to surround the periphery of the injection hole on the external packer side by being spaced apart at regular intervals along the longitudinal direction of the cannula body, and when the grouting solution is filled inside, the volume increases to fill the space between the insert tube body and the drilling hole closely. It consists of an outer packer to make the insertion tube, and a spacer, one side of which is in contact with the inner surface of the drilling hole, and the other side is fixedly formed on the outer surface of the cannulated body, in order to fix the insertion tube body to the drilling hole, wherein the dividing means is, the inside of the insertion tube body A fixed plate spaced apart from the outer packer side to be fixedly disposed on the right or left side of the injection hole, and fixed to the outer surface of the second injection pipe to be disposed on the left or right side of the external packer side injection hole, A movable plate moved at regular intervals to press the first and second elastic members according to the movement, a first elastic member formed to be in contact between a fixed plate formed on the right side and a movable plate formed on the left side, and to the right The insertion tube so as to press the first elastic member and the second elastic member by a second elastic member formed so as to be in contact between the formed fixed plate and the movable plate formed on the left side, and the movable plate is screwed to move the movable plate during rotation. A shaft bolt formed in the center of the body, and the left circumferential surface of the fixing plate is fixed to protrude at a predetermined interval along the inner surface direction of the insertion tube body so that the fixing plate can be fixed to the insertion tube body when the fixing plate is fixed to the inner surface of the insertion tube body A nipple (fixing projection) or fixing projection, an end cover installed to cover the rear end opening of the insertion tube body, and formed on the inner end surface of the bore hole to fix the insertion tube body at the inside end of the bore hole when the insertion tube body is inserted is made of a steel pipe fixing member, the grouting liquid injection means is to inject the grouting liquid into the outer packer to form a protrusion in the perforation hole to the inner side of the insert tube body to inject the grouting liquid into the outer packer A first injection tube to be inserted and installed, and 1 A certain area is cut to one side of the injection tube and the spaced space formed to overlap with the injection hole on the external packer side, and the partition means inside the insertion tube body to inject the grouting solution into the space between the insertion tube body and the inner surface of the perforation hole It characterized in that it is installed so as to consist of a second injection tube inserted into the other side inside the insertion tube body to inject the grouting liquid into the partitioned internal space.

In another embodiment, the external packer simultaneous injection steel pipe further comprises a drop-out preventing means formed on one side of the inserted tube body to prevent the inserted tube body inserted into the perforated hole from easily falling out toward the inlet side, the drop-out preventing means Silver, a perforated stopper formed on one side of the rotational rotation hinge so as to be in contact with the surface of the drilling hole, a close contact driver formed on the other side of the rotational rotation hinge to be rotated by the contact member, and an integrated drilling stopper and close contact driver are formed so that they can be rotated A large rotation hinge formed on the large flow groove that becomes When the shaft guide member formed inside one end of the tube body and the pressing member are in contact with the end surface of the perforation hole, the tube body is pushed to the end surface of the perforation hole, so that it is pushed and moved inside the tube body. When the member shaft to be inserted and the pressing member come into contact with the end face of the drilling hole, the member shaft moves toward the close contact driver as the insertion tube body is further pushed toward the end face of the drilling hole to push the close contact driver to one side of the member shaft. The formed adhesion member, the pressing member formed on the other side of the member shaft so as to be in contact with the end surface of the drilling hole by pushing the insertion tube body toward the end surface of the drilling hole, and the insertion tube so that the member shaft can be inserted into the insertion tube body A shaft groove formed in the center of the end face of the body, a protrusion groove formed on one side of the member shaft so that the member shaft inserted into the insertion tube body can be hooked and fixed at the end of the insertion tube body, and the member shaft is inserted into the projection groove It is characterized in that it consists of a locking protrusion formed on the insertion tube body on both sides of the soccer cavity groove so as to be fixed on the tube body.

As described above, the present invention has the effect of properly performing grouting for each compartment by maintaining the sealing force in each space by accurately dividing the inside of the steel pipe into a plurality of spaces in the external packer simultaneous injection steel pipe.

In addition, the grouting solution is injected into the divided steel pipe so that the pressure at which the grouting solution flows out of the steel pipe is uniformly applied during the grouting construction, so that the steel pipe can be accurately constructed.

In addition, by arranging the first injection pipe that fills the inside of the outer packer with grouting liquid inside the steel pipe, the penetration resistance is reduced when the steel pipe is penetrated into the ground so that the steel pipe can be accurately penetrated, damage or location of the external packer It is possible to increase the ground reinforcement effect by preventing the separation and maintaining a constant injection pressure of the steel pipe.

1 is a view showing the structure of a conventional external packer simultaneous injection steel pipe.
Figure 2 is a view of the present invention external packer simultaneous injection steel pipe.
3 is an enlarged view showing the partition means for FIG. 2 .
4 is a view showing a state in which the external packer simultaneous injection steel pipe of the present invention is constructed on the ceiling of the tunnel.
5 is a view showing a state in which the external packer simultaneous injection steel pipe of the present invention is constructed on a slope.
Figure 6 is a view of another embodiment of the fall prevention means for the external packer simultaneous injection steel pipe in the present invention.
FIG. 7 is a detailed view of FIG. 6 .
8 is a view of the ground fixing means, which is another embodiment of the present invention external packer simultaneous injection steel pipe.
FIG. 9 is a detailed view of FIG. 8 .
10 is a view of a rolling guide means according to another embodiment of the present invention for simultaneous injection of external packer.
11 is a detailed view of FIG. 10 .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0013] Reference is made to the accompanying drawings, which show by way of illustration specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein with respect to one embodiment may be implemented in other embodiments without departing from the spirit and scope of the invention. In addition, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the detailed description set forth below is not intended to be taken in a limiting sense, and the scope of the present invention, if properly described, is limited only by the appended claims, along with all scope equivalents to those claimed. Like reference numerals in the drawings refer to the same or similar functions throughout the various aspects.

Hereinafter, the present invention will be described in detail with reference to the drawings.

2 is a view of the present invention external packer simultaneous injection steel pipe 100, FIG. 3 is an enlarged view showing the dividing means 250 for FIG. 2, and FIG. 4 is an external packer simultaneous injection steel pipe 100 of the present invention. is a view showing the state of construction on the ceiling of the tunnel, and Figure 5 is a view showing the state of construction of the external packer simultaneous injection steel pipe 100 of the present invention on the slope.

As shown in the drawing, the external packer simultaneous injection steel pipe 100 is penetrated into the interior of the ground to perform grouting, so that the ground can be reinforced.

The external packer simultaneous injection steel pipe 100 consists of an insertion tube body 110 , a perforated side injection hole 111 , and an external packer side injection hole 112 .

The insertion tube body 110 is formed in a tubular shape to be formed in the ground, and the insertion tube body 110 is characterized in that it is inserted into the perforation hole.

The perforated injection hole 111 is formed so that the grouting liquid filled into the cannulated body 110 flows out of the cannulated body 110 so that the cannulated body 110 is integrated with the surrounding ground. As being to be, the perforated injection hole 111 is characterized in that a plurality of penetrations are formed on the side of the insertion tube body 110 .

The outer packer side injection hole 112 receives the grouting liquid injected through the first injection tube 310 to fill the grouting liquid into the outer packer 210 of the outer packer means 200 through the insertion tube body 110 . ) to be formed to flow out to the outside, and the outer packer side injection hole 112 is characterized in that a plurality of penetrations are formed on the outer side of the insertion tube body 110 .

The grouting tube includes an external packer means 200 , a partition means 250 , a grouting liquid injection means 300 , and a pressure fixing means 350 .

The external packer means 200 is to be installed at one or more locations on the outer surface of the cannulated body 110 to be spaced apart at regular intervals along the longitudinal direction of the cannulated body 110, the external packer means 200 to the inside When the grouting liquid is injected, the volume increases while closely filling the space between the outer surface of the insert tube body 110 and the inner wall surface of the perforation hole while sealing the gap between the outer surface of the insert tube body 110 and the inner wall surface of the perforation hole characterized.

The external packer means 200 includes an external packer 210 and a spacer 212 .

The outer packer 210 is spaced at a predetermined interval along the longitudinal direction of the insert tube body 110 between the outer surface of the insert tube body 110 and the inner wall surface of the perforation hole to surround the periphery of the outer packer injection hole 112 . The outer packer 210 is characterized in that the volume increases when the grouting liquid is filled therein so that the space between the insertion tube body 110 and the perforation hole is tightly filled.

The spacer 212 is formed to fix the insertion tube body 110 to be spaced apart from each other at a predetermined distance on the perforation hole, and the spacer 212 has one side in contact with the inner surface of the perforation hole, and the other side of the insertion tube body 110 . ) is characterized in that it is fixedly formed on the outer surface.

The partition means 250 is installed to be spaced apart from each other at regular intervals along the longitudinal direction of the insertion tube body 110 to partition the inner space, and is characterized in that it is formed at the same one or more locations as the outer packer means 200 .

The partition means 250 includes a fixed plate 251, a movable plate 253, a first elastic member 252, a second elastic member 254, a shaft bolt 257, a fixing nipple (fixing protrusion) 259) is made of

The fixing plate 251 is spaced apart from the inside of the insertion tube body 110 by a predetermined interval and is characterized in that it is formed to be fixedly disposed on the right or left side of the external packer-side injection hole 112 .

The movable plate 253 is fixed to the outer surface of the second injection pipe 312 and is formed to be disposed on the left or right side of the external packer side injection hole 112, and the movable plate 253 is the second injection pipe 312 ) is characterized in that it is moved at a certain interval according to the movement.

The first elastic member 252 is formed to contact between the fixed plate 251 formed in the right direction and the movable plate 253 formed in the left direction.

The second elastic member 254 is formed to contact between the fixed plate 251 formed in the right direction and the movable plate 253 formed in the left direction of the outer packer injection hole 112 .

The shaft bolt 257 is formed to press the first elastic member 252 and the second elastic member 254 by moving the movable plate 253 , and the shaft bolt 257 is the insertion tube body 110 . It is characterized in that it is formed in the inner center.

The fixing nipple (fixing protrusion) 259 is formed so that the fixing plate 251 can be fixed to the insertion tube body 110 when the left circumferential surface of the fixing plate 251 is fixed to the inner surface of the insertion tube body 110 That is, the fixing nipple (fixing protrusion) 259 is characterized in that it is formed to protrude at a predetermined interval along the inner surface direction of the insertion tube body (110).

The steel pipe fixing member 270 is formed to fix the inserted tube body at the inner end of the drilling hole when the inserted tube body is inserted, and the steel tube fixing member is formed on the inner end of the drilling hole, and the steel tube fixing member is the inserted tube body It is characterized in that it prevents 5° to 15° upward flow when inserting the , and prevents the phenomenon of being pushed back from the drilling hole due to pressure during grouting.

The steel pipe fixing member may be applied or not applied depending on the construction site and construction method.

The end cover 260 is characterized in that it is installed to cover the rear end opening of the insertion tube body (110).

The grouting liquid injection means 300 is formed inside the insertion tube body 110 to inject the grouting liquid through the first injection tube 310 and the second injection tube 312 .

The grouting liquid injection means 300 includes a first injection pipe 310 , a separation space 311 , and a second injection pipe 312 .

The first injection pipe 310 is formed to inject the grouting liquid into the outer packer 210 to form a protrusion within the perforated hole, and the first injection pipe 310 is the outer packer 210 inside. In order to inject the grouting solution into the furnace, it is characterized in that the insertion tube body 110 is inserted into one side inside.

The separation space 311 is characterized in that a predetermined area is cut to one side of the first injection pipe 310 so as to overlap with the external packer-side injection hole 112 .

The second injection tube 312 is a partition means inside the insertion tube body 110 to inject the grouting liquid into the space between the insertion tube body 110 and the inner surface of the perforation hole after the grouting liquid is injected into the outer packer 210 . It is installed to pass through 250 and is formed to inject the grouting liquid into the partitioned internal space, and the second injection tube 312 is inserted into the other side of the insertion tube body 110 .

6 is a view of another embodiment of the fall prevention means 400 for the external packer simultaneous injection steel pipe 100 in the present invention, and FIG. 7 is a detailed view of FIG. 6 .

As shown in the figure, the drop-out prevention means 400 is configured to further include the external packer simultaneous injection steel pipe 100, and the drop-out prevention means 400 has the insertion tube body 110 inserted into the perforation hole. It is characterized in that it is formed on one side of the insertion tube body 110 in order not to easily fall out to the inlet side.

The drop-off preventing means 400 is a perforated stopper 410, a close contact driver 411, a large rotation hinge 412, a large flow groove 413, a shaft guide member 414, a member shaft 415, a contact member ( 416 ), the pressing member 417 , the soccer drive groove 418 , the protrusion groove 419 , and the locking protrusion 420 .

The perforation stopper 410 is formed so as to be in contact with the surface of the perforation hole, and the perforation stopper 410 is formed on one side of the large rotation hinge 412 .

The close contact driver 411 is formed to be rotated by the contact member 416 , and the close contact driver 411 is formed on the other side of the large rotation hinge 412 .

The large rotation hinge 412 is formed so that the integrated perforation stopper 410 and the close contact driver 411 can be rotated, and the large rotation hinge 412 is formed on the large flow groove 413 formed respectively. characterized in that

The large flow groove 413 is formed so that the perforated stopper 410 can be embedded on the insertion tube body 110 or separated from the insertion tube body 110 , and the large flow groove 413 is the insertion tube body 110 . The body 110 is characterized in that it is formed on both sides in one direction, respectively.

The shaft guide member 414 is formed to support the member shaft 415 , and the shaft guide member 414 is formed inside the one end of the insertion tube body 110 .

The member shaft 415 is formed to be moved and pushed into the insertion tube body 110 as it pushes the insertion tube body 110 to the end surface of the perforation hole when the pressing member 417 is in contact with the end surface of the perforation hole. , The member shaft 415 is characterized in that it is inserted through the shaft guide member (414).

When the pressing member 417 contacts the end surface of the perforation hole, the contact member 416 further pushes the insertion tube body 110 toward the end surface of the perforation hole, and the member shaft 415 moves toward the adhesion drive 411 side. It is moved and formed to push the close contact driver 411 , and the contact member 416 is characterized in that it is formed on one side of the member shaft 415 .

The pressing member 417 is formed to be in contact with the end surface of the perforation hole as it pushes the insertion tube body 110 toward the end surface of the perforation hole, and the pressing member 417 is formed on the other side of the member shaft 415 characterized in that

The soccer drive groove 418 is formed so that the member shaft 415 can be inserted into the insertion tube body 110, and the soccer drive groove 418 is formed in the center of the end face of the insertion tube body 110 do it with

The protrusion groove 419 is formed so that the member shaft 415 inserted into the insertion tube body 110 can be hooked and fixed to the locking projection 420 at the end of the insertion tube body 110, and the projection groove ( 419) is characterized in that the member shaft 415 is formed on one side.

The locking projection 420 is formed so that the member shaft 415 can be fixed on the insertion tube body 110 by being caught in the projection groove 419, and the locking projection 420 is inserted into both sides of the shaft driving groove 418. It is characterized in that it is formed on the tube body (110).

8 is a view of the ground fixing means 450, which is another embodiment for the external packer simultaneous injection steel pipe 100 of the present invention, and FIG. 9 is a detailed view of FIG.

As shown in the figure, the ground fixing means 450 is configured to further include the external packer simultaneous injection steel pipe 100, and the ground fixing means 450 is the insertion tube body 110 inserted into the perforation hole. It is characterized in that it is located in the center without contacting the inner surface of the perforation hole so that it can be inserted.

The ground fixing means 450 includes a ground seating plate 451, a cylinder fixing plate 452, a plate guide 453, a shaft through groove 454, a ground insertion protrusion 455, a striking cylinder 456, and striking air. It consists of a regulator 457 , an extrusion air regulator 458 , a striking member 459 , a magnetic 460 , and a striking pin 461 .

The ground mounting plate 451 is characterized in that it is formed in a circular shape to be seated on the ground.

The cylinder fixing plate 452 is characterized in that it is formed so that the striking cylinder 456 can be fixed at a predetermined interval from the ground seating plate 451 .

The plate guide 453 is formed so that the cylinder fixing plate 452 can be positioned at a predetermined distance from the ground seating plate 451 in one direction, and the plate guide 453 is the ground seating plate 451 . It is characterized in that it is formed on both sides between and the cylinder fixing plate (452).

The shaft through-groove 454 has a fixing member 351 positioned at the end of the insertion tube body 110 inserted thereinto is fixed without falling out from the ground mounting plate 451, and the insertion tube body 110 inserted into the perforation hole is on the ground. It is formed so as not to fall out, the shaft through groove 454 is characterized in that it is formed in the center of the ground mounting plate (451).

The ground insertion protrusion 455 is formed such that the ground mounting plate 451 is fixed to the ground when seated on the ground so as not to slip when installed on an inclined surface, and the ground insertion protrusion 455 is on one side of the ground mounting plate 451. It is characterized in that a plurality is formed.

The striking cylinder 456 is formed to strike the striking pin 461 to be driven into the inclined surface, and the striking cylinder 456 is characterized in that it is formed on one side of the cylinder fixing plate 452 .

The striking air regulator 457 is formed to block the injected air so that the driving of the striking cylinder 456 is stopped in a state in which the striking pin 461 is struck, and the striking air regulator 457 is the striking cylinder ( 456) is characterized in that it is formed on one side.

The extrusion air regulator 458 is formed to inject air to open the blocking of the striking air regulator 457 in order to remove the striking pin 461 to the outside, and to inject air to retract the cylinder shaft, the extrusion air regulator 458 ) is characterized in that the striking cylinder 456 is formed on one side.

The striking member 459 is formed to be in contact with the striking pin 461 to strike the striking pin 461, and the striking member 459 is formed at one end of the cylinder shaft of the striking cylinder 456. do.

The magnetic 460 is formed so that the striking pin 461 is coupled to the striking member 459 and detachable due to the retraction of the striking member 459, and the magnetic 460 is the striking member 459 one side. It is characterized in that it is formed in

The striking pin 461 is formed to be embedded in the inclined surface by the operation of the striking cylinder 456 , and the striking pin 461 is formed to be inserted into a plurality of the ground mounting plate 451 .

10 is a view of the rolling guide means 500, which is another embodiment for the present invention external packer simultaneous injection steel pipe 100, FIG. 11 is a detailed view of FIG.

As shown in the figure, the rolling guide means 500 is configured to further include an external packer simultaneous injection steel pipe 100, and the rolling guide means 500 is an insertion tube body 110 inserted into the perforation hole. It is characterized in that it is coupled to the insertion tube body 110 so that it can be inserted and positioned based on the center.

The rolling guide means 500 includes a tube insertion member 510, a tube support protrusion 511, a first tube fixing pad 512, a second tube fixing pad 513, a guide support tube 514, a tension spring ( 515 ), a guide bar 516 , an entry buffer bar 517 , an entry buffer hinge 518 , and an insertion roller 519 .

The tube insertion member 510 is formed to be inserted into the outer peripheral surface of the insertion tube body 110, and the tube insertion member 510 is characterized in that it forms a circular tube.

The tube support protrusion 511 is in close contact with the outer circumferential surface of the inserted tube body 110 so that the tube insertion member 510 and the tube body 110 have the same original center, and the tube support projection ( 511) is characterized in that a plurality of tube insertion member 510 is formed on the inner surface.

The first tube fixing pad 512 is formed to support the tube insertion member 510 so that the tube insertion member 510 into which the insertion tube body 110 is inserted is not pushed in one direction, the first tube fixing pad ( 512) is characterized in that it is formed to be inserted into the insertion position before the insertion of the tube insertion member (510) into the insertion tube body (110).

The second tube fixing pad 513 is inserted into the insertion tube body 110 after insertion of the tube insertion member 510 in order to fix it so as not to fall out in the insertion direction of the tube insertion member 510 inserted into the insertion tube body 110 . Thus, one side is brought into contact with the tube insertion member 510 , and the inner surface is formed to be in close contact with the insertion tube body 110 .

The guide support tube 514 is formed so that the tension spring 515 can be embedded therein.

The tension spring 515 is built into the guide support tube 514 and is formed so that the guide bar 516 can act as a buffer.

The guide bar 516 is formed such that one side is inserted into the guide support tube 514 to be in contact with the tension spring 515, and the other side is formed to be coupled to the entry buffer bar 517 through a Jinin buffer hinge. do it with

The entry buffer bar 517 is formed to support the insertion roller 519, and one side is connected to the guide bar 516 by an entry buffer hinge 518.

The entry buffer hinge 518 is formed to prevent damage to the insertion roller 519 by bending the entry buffer bar 517 at a certain angle when the insertion tube body 110 is inserted into the perforation hole. The buffer hinge 518 is characterized in that it is formed for coupling between the entry buffer bar 517 and the guide bar (516).

When the insertion roller 519 is inserted into the perforation hole, the tube insertion member 510 is not in contact with the inner surface of the perforation hole as the insertion tube body 110 is inserted along the inner center of the perforation hole. It is formed to be inserted, and the insertion roller 519 is characterized in that it is formed on one side of the entry buffer bar 517 .

The above-described embodiments are for illustration, and those of ordinary skill in the art to which the above-described embodiments pertain can easily transform into other specific forms without changing the technical idea or essential features of the above-described embodiments. You will understand. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and likewise components described as distributed may also be implemented in a combined form.

The scope to be protected through this specification is indicated by the claims described below rather than the above detailed description, and should be construed to include all changes or modifications derived from the meaning and scope of the claims and their equivalents. .

100: steel pipe with simultaneous injection of external packer
110: insertion tube body 111: perforated side injection hole
112: external packer side injection hole
200: external packer means 210: external packer
212: spacer
250: partition means 251: fixed plate
252: first elastic member 253: movable plate
254: second elastic member 257: shaft bolt
259: fixed nipple (fixing protrusion)
260: end cover 270: steel pipe fixing member
300: grouting liquid injection means 310: first injection pipe
311: separation space 312: second injection pipe
400: fall prevention means 410: perforated jammer
411: close-fitting drive 412: front hinge
413: large flow groove 414: shaft guide member
415: member shaft 416: close contact member
417: pressing member 418: soccer building groove
419: projection groove 420: jamming projection
450: ground fixing means 451: ground mounting plate
452: cylinder fixing plate 453: plate guide stand
454: shaft through groove 455: ground insertion projection
456: striking cylinder 457: striking air regulator
458: extrusion air regulator 459: striking member
460: magnetic 461: striking pin
500: rolling guide means 510: pipe insertion member
511: tube support projection 512: first tube fixing pad
513: second pipe fixing pad 514: guide support pipe
515: tension spring 516: guide bar
517: entry buffer bar 518: entry buffer hinge
519: insertion roller

Claims (3)

In the external packer simultaneous injection steel pipe that penetrates into the interior of the ground to reinforce the ground by grouting, and a construction method using the same,
The external packer simultaneous injection steel pipe,
An insertion tube body which is formed in a tubular shape and is inserted and installed into a perforation hole formed in the ground, and
A perforation-side injection hole formed through a plurality of penetrations on the side of the cannulated body so that the grouting liquid filled into the cannulated body flows out to the outside of the cannulated body so that the cannulated body is integrated with the surrounding ground;
It consists of an external packer side injection hole that is formed through a plurality of the grouting fluid injected through the first injection pipe to flow out of the cannulated body to the outside of the cannulated body so that the grouting solution can be filled into the external packer of the external packer. ,
The external packer simultaneous injection steel pipe,
It is installed at one or more points on the outer surface of the cannulated body at regular intervals along the longitudinal direction of the cannulated body, and when the grouting liquid is injected into the inside, the volume increases and closes between the outer surface of the cannulated body and the inner wall of the perforation hole. an external packer means for sealing the gap between the outer surface of the insertion tube body and the inner wall surface of the perforation hole while filling the tube; and
a partition means installed to be spaced apart at regular intervals along the longitudinal direction of the insertion tube body and formed in one or more locations identical to the outer packer means to partition the inner space; and
It consists of a grouting liquid injection means formed inside the insertion tube body to inject the grouting liquid through the first injection tube and the second injection tube,
The external packer means,
It is formed to surround the periphery of the injection hole on the external packer side by being spaced apart at a certain distance along the longitudinal direction of the insertion tube body between the outer surface of the insert tube body and the inner wall surface of the perforation hole, and the volume increases when the grouting solution is filled inside. An external packer that tightly fills the space between the tube body and the perforated hole,
In order to fix the insertion tube body to the perforation hole, one side is in contact with the inner surface of the perforation hole, and the other side is formed of a spacer fixed to the outer surface of the insertion tube body,
The partition means,
A fixing plate that is spaced apart from the inside of the insertion tube body at a predetermined interval and is formed to be fixedly disposed on the right or left side of the injection hole on the external packer side;
A movable plate fixed to the outer surface of the second injection pipe and disposed on the left or right side of the injection hole on the external packer side, the movable plate being moved at regular intervals to press the first and second elastic members according to the movement of the shaft bolt;
A first elastic member formed so as to be in contact between the fixed plate formed on the right side and the movable plate formed on the left side;
A second elastic member formed so as to be in contact between the fixed plate formed on the right side and the movable plate formed on the left side;
A shaft bolt which is screwed to the movable plate and formed in the center of the insertion tube body to move the movable plate during rotation to press the first and second elastic members;
A fixing nipple (fixing projection) or fixing projection formed to protrude at regular intervals along the inner surface direction of the insertion tube body so that the fixing plate can be fixed to the insertion tube body when the left circumferential surface of the fixing plate is fixed to the inner surface of the insertion tube body;
an end cover installed to cover the rear end opening of the insertion tube body;
When the insertion tube body is inserted, it consists of a steel pipe fixing member formed on the inner end surface of the drilling hole to fix the inserted tube body at the inner end of the drilling hole,
The grouting liquid injection means,
A first injection tube inserted into one side of the insertion tube body to inject the grouting liquid into the outer packer in order to inject the grouting liquid into the outer packer to form a protrusion within the perforated hole;
A spaced space formed by cutting a certain area to one side of the first injection pipe to overlap with the injection hole on the external packer side;
The second is installed to pass through the dividing means inside the cannulated body to inject the grouting liquid into the space between the cannulated body and the inner surface of the drilling hole, and is inserted into the other side of the cannulated body to inject the grouting solution into the divided internal space. It consists of an injection tube,
The external packer simultaneous injection steel pipe,
In order to prevent the insertion tube body inserted into the perforation hole from easily falling out toward the inlet side, it further includes a drop-out preventing means formed on one side of the insertion tube body,
The drop-off preventing means,
A perforation stopper formed on one side of the rotating hinge so as to be in contact with the perforation hole surface,
A close contact drive member formed on the other side of the rotation hinge so as to be rotated by the close contact member;
A large rotation hinge formed on the large flow grooves respectively formed so that the integrated perforated stopper and the close contact driver can be rotated;
Large flow grooves formed on both sides of the insertion tube body in one direction so that the perforation stopper can be embedded on the insertion tube body or separated from the insertion tube body;
A shaft guide member formed inside one end of the insertion tube body to support the member shaft;
A member shaft inserted and formed through the shaft guide member so that the insertion tube body is pushed to the inside of the insertion tube body as it pushes the insertion tube body toward the end surface of the drilling hole when the pressing member is in contact with the end surface of the perforation hole;
When the pressing member is in contact with the end surface of the perforation hole, the member shaft is moved to the adhesion driver side as the insertion tube body is further pushed toward the end surface of the perforation hole, and the adhesion member is formed on one side of the member shaft to push the adhesion driver;
A pressing member formed on the other side of the member shaft so as to be in contact with the end surface of the perforation hole by pushing the insertion tube body toward the end surface of the perforation hole;
A soccer cavity groove formed in the center of the end face of the insertion tube body so that the member shaft can be inserted into the insertion tube body;
A protrusion groove formed on one side of the member shaft so that the member shaft inserted into the insertion tube body can be caught and fixed at the end of the insertion tube body by the locking projection;
An external packer simultaneous injection steel pipe and a construction method using the same, characterized in that it consists of a locking protrusion formed on the insertion tube body on both sides of the soccer cavity groove so that the member shaft can be fixed on the insertion tube body by being caught in the projection groove.
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