KR102455061B1 - Composite simultaneous injection pipe and construction method - Google Patents

Abstract

The present invention relates to a composite simultaneous injection steel pipe and a construction method thereof implemented to minimize interference with support materials by removing a part of the entrance portion of a steel pipe for grouting injection after completion of the grouting. A grouting simultaneous injection method using the composite simultaneous injection steel pipe comprises: a drilling step of drilling a hole at the end of a turner to 13 m; a steel pipe insertion step of inserting a simultaneous injection steel pipe into the drilled hole using a push rod; a push rod removal step of removing the push rod after inserting the simultaneous injection steel pipe into the drilled hole; a first caulking step of injecting caulking liquid after caulking work at the entrance of the drilled hole using a caulking packer module; a grouting injection step of caulking between a grouting steel pipe and the drilled hole using an external packer module; and a steel joint cutting step of cutting a grooved integrated steel pipe of the simultaneous injection steel pipe located at the entrance of the drilled hole by applying an impact with a hammer.

Description

Composite simultaneous injection pipe and construction method

The present invention relates to a composite co-injected steel pipe and a construction method, and more particularly, to a complex co-injected steel pipe and a construction method implemented to minimize support material interference by removing a part of the inlet part of the steel pipe for grouting after grouting is completed. is about

In general, ground improvement methods using graded grouting, which are used to reinforce soft ground or prevent subsidence of structures built on soft ground, drill a hole in the submerged ground with cement sludge or chemical liquid, which is a fluid inflow material, and forcibly fill and solidify it to make it stronger. It refers to the method of constructing a structure.

This ground reinforcement grouting method is mainly used when excavating a tunnel. Looking at an example of a grouting construction apparatus according to the prior art for carrying out such a grouting method, first, a drilling hole is excavated in the ground, and then a plurality of A steel pipe having outlet holes formed on the same line at equal intervals is inserted, and a grouting fluid injection hose is inserted into the steel pipe.

Then, a caulking member is installed to seal the gap between this drilling hole at the entrance of the drilling hole and the steel pipe, the rear end of the steel pipe is covered with a separate cover, and the grouting liquid is injected into the steel pipe using an external pump. Thus, when the grouting liquid gradually fills the inside of the steel pipe, it exits the steel pipe through the through hole, fills the entire inside of the perforated hole surrounding the outside of the steel pipe, and then cures to complete the grouting work for ground reinforcement.

On the other hand, the above-mentioned background art is technical information that the inventor possessed for the derivation of the present invention or acquired in the process of derivation of the present invention, and it cannot be said that it is necessarily a known technique disclosed to the general public before the filing of the present invention. .

Republic of Korea Patent No. 10-0478321

One aspect of the present invention provides a composite co-injected steel pipe and a construction method implemented to minimize support material interference by removing a part of the inlet part of the steel pipe for injecting grouting after grouting is completed.

The present invention is characterized in that it is a composite simultaneous injection steel pipe and a construction method implemented so as to minimize interference with support materials by removing a part of the inlet part of a steel pipe for injecting grouting after grouting is completed.

In one embodiment, the simultaneous injection steel pipe includes a grouting steel pipe formed in a circular pipe shape and inserted into a perforated hole, a grooved integral steel pipe formed in a circular pipe shape and extending in the longitudinal direction from the rear end of the grouting steel pipe, and , a separation groove recessed along the outer circumferential surface of the grooved integrated steel pipe so as to cut a part of the grooved integrated steel pipe, and the first and second elastic members passing through the first and second elastic members A central bolt formed in the inner center of the simultaneous injection steel pipe so as to be in close contact with the fixing protrusion (fixing nipple) side, and each end of the grouting steel pipe and the grooved integrated steel pipe facing each other while fastening the grouting steel pipe and the grooved integrated steel pipe to each other A push rod installed on the outside, a grouting injection hole formed through the grouting steel pipe at regular intervals along the grouting steel pipe to discharge the grouting supplied through the grouting steel pipe to the outside of the grouting steel pipe, and the front end of the grouting steel pipe is closed A finishing end formed to do this, and a grouting injection pipe manufactured in different lengths so as to supply grouting to the inner space of the grouting steel pipe and installed in a plurality of the grouting steel pipe and the grooved integrated steel pipe, and the grouting steel pipe At least one first elastic member installed inside and installed to support the grouting injection pipe installed in the inner space of the grouting steel pipe, and the first elastic member facing the first elastic member and spaced apart from the first elastic member by the front end of the grouting At least one second elastic member installed inside the steel pipe to support the grouting injection pipe installed in the inner space of the grouting steel pipe, and at least one or more installed along the outside of the grouting steel pipe for grouting in the perforated hole A space formed to support the injection pipe, and the first elastic member disposed at the rearmost end is formed to protrude along the inner surface of the grouting steel pipe to prevent it from being pushed to the rear end along the inner side of the grouting steel pipe, and the first elastic member a fixing protrusion (fixing nipple) formed to support the The burr, the second end cover installed inside the pusher holder while sealing both the rear end opening of the grouting steel pipe and the front end opening of the grooved integrated steel pipe, and the grooved integrated steel pipe are installed outside the rear end, and the caulking liquid is When injected, the caulking packer module is formed to close the gap between the grooved integrated steel pipe and the drilling hole, and it is installed on the outside of the grouting steel pipe to cover both the first elastic member and the second elastic member. A packer module and at least one external packer injection pipe installed inside the grouting steel pipe and the grooved integrated steel pipe up to the space between the first and second elastic members so as to supply the caulking liquid to the external packer module. characterized in that

In another embodiment, the simultaneous injection steel pipe further includes an entry guide means for allowing the grouting steel pipe to be inserted into the drilling hole to be smoothly inserted without contacting the inner surface of the drilling hole, the entry guide means, A first coupling member ring that is connected to the upper outer surface of the grouting steel pipe so that it can be opened and closed based on the second coupling member ring through a ring hinge, and the first coupling member ring is opened and closed based on the first coupling member ring through a ring hinge to the lower side of the grouting steel pipe A second coupling member ring formed to be connected to each other, a ring hinge formed on one side of the first coupling member ring and the second coupling member ring to be mutually coupled to enable rotational opening and closing based on the grouting steel pipe, and the second coupling member A locking protrusion formed on one side of the first coupling member ring to be inserted into the locking groove when closed to the ring side so that the first coupling member ring can be coupled to the second coupling member ring, and a second coupling member ring so that the locking protrusion can be inserted A locking groove formed on one side and a push formed to support the first coupling member ring and the second coupling member ring to one side of the outer surface of the grouting steel pipe so that the first coupling member ring and the second coupling member ring to be coupled are not pushed on the grouting steel pipe A buffer pipe formed in plurality on the outer peripheral surfaces of the first coupling member ring and the second coupling member ring so that the prevention pad and the guide ball can be buffered, and the upper part of the buffer pipe to support the guide ball built in the buffer pipe from falling out to the outside A ball drop-out prevention end formed by a ball, a guide ball formed to be embedded in the buffer pipe to flow according to the buffer action of the ball buffer spring according to the inner surface of the drilling hole, and the guide ball to be in contact with the inner surface of the drilling hole to flow as a buffer action according to the curvature. It is characterized in that it consists of a ball buffer spring formed inside the buffer tube so as to

As described above, according to one aspect, it is possible to provide the effect of improving the reinforcing performance of the existing tunnel reinforcement method by minimizing the interference of the support material by removing a part of the inlet portion of the steel pipe for injecting the grouting after completing the grouting.

1a, 1b, 1c is a view showing a composite co-injected steel pipe of an embodiment of the present invention.
FIG. 2 is a view of the non-return valve of FIG. 1 .
3a and 3b are views showing a composite co-injected steel pipe of another embodiment with respect to FIG. 1 .
Figure 4 is a flow chart for explaining the simultaneous injection grouting method using the composite simultaneous injection steel pipe for FIG.
FIG. 5 is a flowchart illustrating a simultaneous injection method for grouting using a composite simultaneous injection steel pipe for FIG. 3 .
6 is a view showing an entry guide means according to another embodiment of the present invention.
FIG. 7 is a detailed view of FIG. 6 .
8 is a view showing a steel pipe adhesion means, which is another embodiment of the present invention.
FIG. 9 is a detailed view of FIG. 8 .
10 is a view showing a wall fixing means according to another embodiment of the present invention.
11 is a detailed view of FIG. 10 .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0014] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0016] Reference is made to the accompanying drawings, which show by way of illustration specific embodiments in which the present 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.

1a, 1b, 1c are views showing a composite simultaneous injection steel pipe according to an embodiment of the present invention, FIG. 2 is a view of a non-return valve for FIG. 1, and FIGS. 3a and 3b are another embodiment for FIG. 1 It is a diagram showing an example composite co-injection steel pipe.

1 is a diagram showing the condition of a single head 13m, and FIG. 3 is a diagram showing the condition of a lead 3m + tail 10m of a connection type.

Figure 1a is a view in which the caulking packer module is applied in a single condition, Figure 1b is a view in which the caulking packer module is not applied in a single condition, Figure 3a is a view in which a caulking packer module is applied in a connected condition, and Figure 3b is a caulking in a connected condition It is a drawing without the packer module applied.

In the above, the numerical value of the single condition and the numerical value of the connected condition have been described as the numerical values used as a basis in the present invention, and may be changed according to the site and the construction method.

As shown in the figure, the simultaneous injection steel pipe 10 is characterized in that it is implemented to minimize the interference of the support member by removing a part of the entrance part of the steel pipe for grouting after the completion of the grouting.

The simultaneous injection steel pipe 10 is a grouting steel pipe 100, a grooved integrated steel pipe 110, a separation groove 111, a central bolt 112, a pusher holder 120, a grouting spray hole 121, a finishing end ( 122), grouting injection pipe 123, first expansion member 124, second expansion member 125, space 126, fixing protrusion (fixing nipple) 127, first end cover 128, first 2 It consists of an end cover 129, a caulking packer module 130, an external packer module 131, and an external packer injection pipe 132.

The grouting steel pipe 100 is formed in a circular pipe shape and is inserted into the perforated hole.

The grooved integrated steel pipe 110 is formed in a circular pipe shape and is formed to extend in the longitudinal direction from the rear end of the grouting steel pipe 100 .

The separation groove 111 is formed to be able to cut a part of the grooved integrated steel pipe 110, and the separation groove 111 is recessed along the outer circumferential surface of the grooved integrated steel pipe 110, characterized in that do.

The central bolt 112 penetrates the first elastic member 124 and the second elastic member 125 to fix the first elastic member 124 and the second elastic member 125 with a fixing protrusion (fixing nipple) 127 . It is formed to be in close contact with the side, and the central bolt 112 is characterized in that it is formed in the center of the grooved integrated steel pipe and the grouting steel pipe.

The central bolt 112 can be applied as a pushing type or a pulling type, and the fixing protrusion (fixing nipple) 127 is characterized in that the direction of the right side is changed according to the pushing type or the pulling type.

The drawing of the present invention shows a pulling type, and it can be seen that the fixing protrusion (fixing nipple) is located on the left side of the first elastic member.

In the case of the push type, the fixing protrusion (fixing nipple) should be located on the right side of the second elastic member.

The pusher holder 120 is characterized in that the grouting steel pipe and the grooved integrated steel pipe are in contact with each other to be joined and connected, and are installed around the mutual abutting position.

The grouting injection hole 121 is formed to discharge the grouting supplied through the grouting steel pipe 100 to the outside of the grouting steel pipe 100 , and the grouting injection hole 121 is the grouting steel pipe 100 . ) is characterized in that it is penetrated at regular intervals along the

The closing end 122 is characterized in that it is formed to close the front end of the grouting steel pipe (100).

The grouting injection pipe 123 is formed so as to supply grouting to the inner space of the grouting steel pipe 100, and the grouting injection pipe 123 is manufactured in different lengths to form the grouting steel pipe 100 and the groove. It is characterized in that a plurality of pieces are installed on the inside of the machined integrated steel pipe (110).

The first elastic member 124 is installed inside the grouting steel pipe 100 to support the grouting injection pipe 123 installed in the inner space of the grouting steel pipe 100. do.

The second elastic member 125 is spaced apart from the first elastic member 124 by the front end while facing the first elastic member 124 and is installed inside the grouting steel pipe 100 to the inside of the grouting steel pipe 100 . It is characterized in that at least one or more is installed to support the grouting injection pipe 123 installed in the space.

At least one space 126 is installed along the outside of the grouting steel pipe 100 to support the grouting injection pipe 123 in the perforated hole.

The fixing protrusion (fixing nipple) 127 is formed to prevent the first elastic member 124 disposed at the rearmost end from being pushed to the rear end along the inner side of the grouting steel pipe 100, and the fixing protrusion (fixing) The nipple) 127 is formed to protrude along the inner surface of the grouting steel pipe 100 to support the first elastic member 124 .

The first end cover 128 is installed to cover the rear end opening of the grooved integrated steel pipe 110 .

The second end cover 129 seals both the rear end opening of the grouting steel pipe 100 and the front end opening of the grooved integrated steel pipe 110, and is installed inside the pusher holder 120, characterized in that it is installed.

The caulking packer module 130 is installed outside the rear end of the grooved integrated steel pipe 110, and when the caulking liquid is injected, it is formed to seal the gap between the grooved integrated steel pipe 110 and the drilling hole.

The outer packer module 131 is formed to cover both the first elastic member 124 and the second elastic member 125, and the outer packer module 131 is installed on the outside of the grouting steel pipe 100, , characterized in that the caulking liquid is injected.

The external packer injection pipe 132 is formed to supply a caulking liquid to the external packer module 131 , and the external packer injection pipe 132 includes a first elastic member 124 and a second elastic member 125 . ) to the space between the grouting steel pipe 100 and the grooved integrated steel pipe 110, characterized in that it is formed of at least one or more installed inside.

A steel pipe fixing member is additionally configured in the present invention, and the steel pipe fixing member is not shown in the drawings of the present invention, and may or may not be applied depending on the site and construction method.

The steel pipe fixing member is formed to fix the grouting steel pipe at the inner end of the drilling hole when the grouting steel pipe is inserted. It is characterized in that it prevents 5°~15° from flowing down, and prevents it from being pushed back from the drilling hole due to pressure during grouting.

1, the check valve may be applied or not applied in the present invention, and the check valve is formed to prevent backflow even if the injection of the grouting liquid is stopped when the injection pressure increases when the injection of the grouting liquid is stopped.

In FIG. 2, the non-return valve prevents backflow in relation to the grouting liquid ejection, and may or may not be applied in the present invention.

In Figure 3, the simultaneous injection steel pipe of the present invention is characterized in that it is formed in a 13m single piece, or is formed in any one method depending on the site and construction method among the connection types of 3m at the head + 10m at the rear.

4 is a flow chart illustrating the simultaneous injection method for grouting using the composite simultaneous injection steel pipe for FIG. 1 , and FIG. 5 is a flowchart for explaining the simultaneous injection method for grouting using the composite simultaneous injection steel pipe for FIG. 3 .

As shown in the figure, the grouting simultaneous injection method using the composite simultaneous injection steel pipe 10 is,

1) Drilling is performed at the end of the tunnel to form a perforation hole for the insertion of the simultaneous injection steel pipe 10 for injecting grouting. Here, the drilling hole is preferably drilled to 13m.

2) After the above-described drilling step, insert the steel pipe into the drilling hole formed by the drilling step using a push rod.

3) When the insertion of the simultaneous injection steel pipe 10 into the perforation hole is completed, remove the push rod.

delete

4) After the above-mentioned step of removing the push rod, caulking may be performed by injecting the caulking liquid into the inlet of the drilling hole by using the caulking packer module 130 .

5) After the above-described caulking liquid injection step, caulking is performed between the grouting steel pipe 100 and the drilling hole using the external packer module 131 .
6 In order to prevent interference when installing the support material, a part of the simultaneous injection steel pipe 10 located at the entrance of the drilling hole, that is, the grooved integrated steel pipe 110, is impacted with equipment such as a hammer to follow the separation groove 111. cut and remove

6 is a view showing an entry guide means 200 that is another embodiment of the present invention, and FIG. 7 is a detailed view of FIG. 6 .

As shown in the drawing, the entry guide means 200 is to be further included in the simultaneous injection steel pipe 10, and the entry guide means 200 is a grouting steel pipe 100 inserted into the drilling hole inner surface of the drilling hole. It is characterized in that it can be smoothly inserted without being in contact with the .

The entry guide means 200 includes a first coupling member ring 210 , a second coupling member ring 211 , a ring hinge 212 , a locking protrusion 213 , a locking groove 214 , and a slip prevention pad 215 . , a buffer pipe 216, a ball drop prevention end 217, a guide ball 218, consists of a ball buffer spring (219).

The first coupling member ring 210 is characterized in that it is connected to the upper outer surface of the grouting steel pipe 100 through a ring hinge 212 to be opened and closed based on the second coupling member ring 211 .

The second coupling member ring 211 is connected to the lower outer surface of the grouting steel pipe 100 through a ring hinge 212 to be opened and closed based on the first coupling member ring 210 .

The ring hinge 212 is coupled to each other to enable rotational opening and closing based on the grouting steel pipe 100, and the ring hinge 212 includes a first coupling member ring 210 and a second coupling member ring. (211) It is characterized in that it is formed on one side.

The locking protrusion 213 is inserted into the locking groove 214 when it is closed toward the second coupling member ring 211 so that the first coupling member ring 210 can be coupled to the second coupling member ring 211 . As such, the locking protrusion 213 is formed on one side of the first coupling member ring 210 .

The locking groove 214 is formed so that the locking protrusion 213 can be inserted, and the locking groove 214 is formed on one side of the second coupling member ring 211 .

The anti-skid pad 215 is formed so that the first coupling member ring 210 and the second coupling member ring 211 are not pushed on the grouting steel pipe 100, and the anti-skid pad 215 is a grouting steel pipe. (100) It is characterized in that it is formed to support the first coupling member ring 210 and the second coupling member ring 211 to one side of the outer surface.

The buffer pipe 216 is formed so that the guide ball 218 can be buffered, and the buffer pipe 216 is formed in plurality on the outer peripheral surface of the first coupling member ring 210 and the second coupling member ring 211 . characterized in that

The ball drop prevention end 217 is formed to support the guide ball 218 built in the buffer tube 216 so that it does not fall out, and the ball drop prevention end 217 is located above the buffer tube 216 . characterized in that it is formed with

The guide ball 218 is formed to flow according to the buffer action of the ball buffer spring 219 along the inner surface of the perforation hole, and the guide ball 218 is formed to be embedded in the buffer tube 216 .

The ball buffer spring 219 is in contact with the inner surface of the drilling hole and is formed so that the guide ball 218 can flow as a buffering action according to the curve, and the ball buffer spring 219 is formed inside the buffer tube 216 . characterized by being

8 is a view showing a steel pipe adhesion means 300 that is another embodiment of the present invention, and FIG. 9 is a detailed view of FIG. 8 .

As shown in the drawing, the steel pipe bonding means 300 is further included in the simultaneous injection steel pipe 10, and the steel pipe bonding means 300 is for fixing the grooved integrated steel pipe 110 to the inner surface of the perforation hole. It is characterized in that a plurality of grooved integrated steel pipe 110 is formed so as to be detachable from the outer surface.

The steel pipe adhesion means 300 includes a fixed dividing member 310, a spacing protrusion 311, a protrusion groove 312, a steel pipe insertion hole 313, an adhesion tube 314, an air injection nozzle 315, and an air injection pipe. 316 , a pressure sensor 317 , and a capsule binder 318 .

The fixed dividing member 310 is inserted into the outer surface of the grooved integrated steel pipe 110, and when inserted into the grooved integrated steel pipe 110, it is divided into a plurality so as to be adjustable to fit the outer diameter of the grooved integrated steel pipe 110. characterized in that

The spacer protrusion 311 is inserted into the protrusion groove 312 so as to be adjusted to flow according to the diameter of the grooved integrated steel pipe 110, and the spacer protrusion 311 is a fixed dividing member 310 on one side. characterized in that it is formed by

The protrusion groove 312 is formed so that the spacing protrusion 311 is inserted to be adjusted to fit the diameter of the grooved integrated steel pipe 110, and the protrusion groove 312 is formed on the other side of the fixed dividing member 310 characterized by being

The steel pipe insertion hole 313 is formed to be inserted into the outer surface of the grooved integrated steel pipe 110 , and the steel pipe insertion hole 313 is formed in the center of the fixed dividing member 310 .

The close contact tube 314 is formed to fill the space between the fixed dividing member 310 and the perforated hole when inserted into the perforated hole and closely adhere to it. characterized in that it is formed.

The air injection nozzle 315 is formed so that the upper injection tube and the lower injection tube for injecting air to the adhesion tube 314 side can be detachably attached, and the air injection nozzle 315 is each adhesion tube 314 . It is characterized in that it is formed on one side.

The air injection tube 316 is characterized in that it is formed as a tube having flexibility to inject air to the adhesion tube 314 side to be detachably attached to the injection nozzle.

The pressure sensor 317 is formed to sense the pressure applied when the contact tube 314, which is expanded by the air injected into the contact tube 314, comes into contact with the perforation hole, and the pressure sensor 317 is each It is characterized in that it is formed on one side of the fixed dividing member 310 of the.

The capsule binder 318 is formed on the outer surface of the adhesion tube 314 so that the outer surface of the adhesion tube 314 and the inner surface of the perforation hole are adhered when the adhesion tube 314 is expanded. It is characterized in that it is formed to flow out between the 314 and the inner surface of the perforation hole.

FIG. 10 is a view showing a wall fixing means 400 which is another embodiment of the present invention, and FIG. 11 is a detailed view of FIG. 10 .

As shown in the drawing, the wall fixing means 400 is further included in the simultaneous injection steel pipe 10, and the wall fixing means 400 includes the grouting steel pipe 100 and the grooved integrated steel pipe inserted into the perforated hole. (110) 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 wall fixing means 400 is a wall fixing plate 410, a cylinder fixing plate 411, a plate guide stand 412, a shaft through groove 413, a ground insertion protrusion 414, a striking cylinder 415, a striking air regulator. 416 , the extrusion air regulator 417 , a striking member 418 , a magnetic 419 , and a striking pin 420 .

The wall fixing plate 410 is characterized in that it is formed in a circular shape to be attached to the ground.

The cylinder fixing plate 411 is characterized in that it is formed so that the striking cylinder 415 can be fixed at a predetermined interval from the wall fixing plate 410 .

The plate guide 412 is formed so that the cylinder fixing plate 411 can be positioned at a predetermined interval in one direction from the wall fixing plate 410, and the plate guide 412 is the wall fixing plate 410 and the cylinder. It is characterized in that it is formed on both sides between the fixing plate (411).

The shaft-through groove 413 is fixed without falling out from the wall fixing plate 410 by inserting a fixing member located at the end of the grooved integrated steel pipe 110, and the grooved integrated steel pipe 110 inserted into the drilling hole does not fall out of the ground. It is formed so as not to be, and the shaft through groove 413 is characterized in that it is formed in the center of the wall fixing plate (410).

The ground insertion protrusion 414 is formed such that the wall fixing plate 410 is fixed to the ground when it is seated on the ground so as not to slip when installed on the wall where the perforation hole is formed, and the ground insertion protrusion 414 is the wall fixing plate 410 It is characterized in that a plurality is formed on one side.

The striking cylinder 415 is formed to strike the striking pin 420 to be embedded in the wall surface, and the striking cylinder 415 is characterized in that it is formed on one side of the cylinder fixing plate 411 .

The striking air regulator 416 is formed to block the injected air so that the driving of the striking cylinder 415 is stopped in a state in which the striking pin 420 is struck, and the striking air regulator 416 is the striking cylinder ( 415) is characterized in that it is formed on one side.

The extrusion air regulator 417 is formed to inject air to open the blocking of the striking air regulator 416 in order to remove the striking pin 420 to the outside, and to inject air to retract the cylinder shaft, the extrusion air regulator 417 ) is characterized in that the striking cylinder 415 is formed on one side.

The striking member 418 is formed to be in contact with the striking pin 420 to strike the striking pin 420, and the striking member 418 is formed at one end of the cylinder shaft of the striking cylinder 415. do.

The magnetic 419 is formed such that the striking pin 420 is coupled to the striking member 418 due to the retraction of the striking member 418 and can be detached, and the magnetic 419 is the striking member 418 one side It is characterized in that it is formed in

The striking pin 420 is formed to be embedded in the inclined surface by the operation of the striking cylinder 415 , and the striking pin 420 is formed to be inserted into a plurality of the wall fixing plate 410 .

The above-described embodiments are for illustration, and those of ordinary skill in the art to which the above-described embodiments belong 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. .

10: simultaneous injection steel pipe
100: grouting steel pipe 110: grooved integrated steel pipe
111: separation groove 112: center bolt
120: push rod 121: grouting spray hole
122: closing end 123: grouting injection pipe
124: first elastic member 125: second elastic member
126: space 127: fixing protrusion (fixing nipple)
128: first end cover 129: second end cover
130: caulking packer module 131: external packer module
132: external packer injection pipe 140: steel pipe fixing member
200: entry guide means 210: first coupling member ring
211: second coupling member ring 212: ring hinge
213: lock projection 214: lock groove
215: anti-skid pad 216: buffer pipe
217: ball drop prevention end 218: guide ball
219: ball buffer spring
300: steel pipe adhesion means 310: fixed division member
311: spacing projection 312: projection groove
313: steel pipe insertion hole 314: tight tube
315: air injection nozzle 316: air injection pipe
317: pressure sensor 318: capsule binder
400: wall fixing means 410: wall fixing plate
411: cylinder fixing plate 412: plate guide stand
413: shaft through groove 414: ground insertion projection
415: striking cylinder 416: striking air regulator
417: extrusion air regulator 418: striking member
419: magnetic 420: striking pin

Claims (3)

In the composite co-injected steel pipe and the grouting co-injection method using the same, the composite co-injected steel pipe implemented to minimize support material interference by removing a part of the inlet part of the steel pipe for grouting after the grouting is completed,
The simultaneous injection steel pipe,
A grouting steel pipe formed in a circular pipe shape and inserted into a perforated hole,
A grooved integrated steel pipe formed in the form of a circular pipe and extending in the longitudinal direction from the rear end of the grouting steel pipe;
a separation groove recessed along the outer circumferential surface of the grooved integrated steel pipe to cut a part of the grooved integrated steel pipe;
A central bolt formed in the inner center of the grooved integrated steel pipe and the grouting steel pipe so as to penetrate the first and second elastic members to bring the first and second elastic members into close contact with the fixing protrusion (fixing nipple) side;
a pusher holder installed around a position where the grouting steel pipe and the grooved integrated steel pipe are in contact with each other and joined and connected to each other;
Grouting injection holes formed through the grouting steel pipe at regular intervals along the grouting steel pipe to discharge the grouting supplied through the grouting steel pipe to the outside of the grouting steel pipe;
a finishing end formed to close the front end of the grouting steel pipe;
A grouting injection pipe manufactured in different lengths so as to supply grouting to the inner space of the grouting steel pipe and installed in a plurality of the grouting steel pipe and the grooved integrated steel pipe;
a first elastic member installed inside the grouting steel pipe and installed at least one or more to support the grouting injection pipe installed in the inner space of the grouting steel pipe;
While facing the first elastic member, it is spaced apart from the first elastic member at the front end and installed inside the grouting steel pipe to support the grouting injection pipe installed in the inner space of the grouting steel pipe. At least one second elastic member is installed. Wow,
At least one space installed along the outside of the grouting steel pipe to support the grouting injection pipe in the perforated hole;
A fixing protrusion (fixing nipple) which is formed to protrude along the inner surface of the grouting steel pipe to support the first expandable member so as to prevent the first elastic member disposed at the rearmost end from being pushed to the rear end along the inner side of the grouting steel pipe. )class,
a first end cover installed to cover the rear end opening of the grooved integrated steel pipe;
a second end cover installed inside the pusher holder while sealing both the rear end opening of the grouting steel pipe and the front end opening of the grooved integrated steel pipe;
A caulking packer module installed outside the rear end of the grooved integrated steel pipe and formed to seal the gap between the grooved integrated steel pipe and the perforated hole when caulking liquid is injected;
It is installed on the outside of the grouting steel pipe so as to cover both the first elastic member and the second elastic member, and when the caulking liquid is injected, an external packer module;
At least one external packer injection pipe installed inside the grouting steel pipe and the grooved integrated steel pipe to a space between the first elastic member and the second elastic member so as to supply the caulking liquid to the external packer module;
When the grouting steel pipe is inserted, one side is fixed to the inner end face of the drilling hole in order to fix the grouting steel pipe at the inner end of the drilling hole, and the other side is made of a steel pipe fixing member fixed to the end of the grouting steel pipe,
The simultaneous injection steel pipe,
It further includes an entry guide means for allowing the grouting steel pipe to be inserted into the drilling hole to be smoothly inserted without contacting the inner surface of the drilling hole,
The entry guide means,
A first coupling member ring that is connected to the upper side of the outer surface of the grouting steel pipe to be opened and closed based on the second coupling member ring through a ring hinge;
A second coupling member ring connected to the lower side of the outer surface of the grouting steel pipe so as to be opened and closed based on the first coupling member ring through a ring hinge;
A ring hinge formed on one side of the first coupling member ring and the second coupling member ring to be coupled to each other to enable rotational opening and closing based on the grouting steel pipe;
A locking protrusion formed on one side of the first coupling member ring to be inserted into the locking groove when closed toward the second coupling member ring so that the first coupling member ring can be coupled to the second coupling member ring;
A locking groove formed on one side of the second coupling member ring so that the locking protrusion can be inserted;
An anti-skid pad formed to support the first coupling member ring and the second coupling member ring to one side of the outer surface of the grouting steel pipe so that the first coupling member ring and the second coupling member ring to be coupled are not pushed on the grouting steel pipe;
A buffer pipe formed in plurality on the outer peripheral surfaces of the first coupling member ring and the second coupling member ring so that the guide ball can be buffered;
A ball drop prevention end formed at the top of the buffer tube to support the guide ball built in the buffer tube from falling out,
A guide ball that is formed to be embedded in the buffer pipe to flow in the buffer action of the ball buffer spring along the inner surface of the perforation hole;
A composite simultaneous injection steel pipe, characterized in that it is made of a ball buffer spring that is in contact with the inner surface of the perforation hole and is formed inside the buffer pipe so that the guide ball can flow as a buffer according to the curve.
The method of claim 1,
The grouting simultaneous injection method is,
A drilling step of drilling a drilling hole 13m at the end of the turner part to form a drilling hole for inserting a simultaneous injection steel pipe;
A steel pipe insertion step of inserting a simultaneous injection steel pipe into the drilling hole using a push rod;
A push rod removal step for removing the push bar after inserting the simultaneous injection steel pipe into the perforated hole;
A first caulking step for injecting caulking liquid after caulking work at the entrance of the drilling hole using a caulking packer nodule;
A grouting injection step for caulking between the grouting steel pipe and the drilled hole using an external packer module,
Grouting simultaneous injection method, characterized in that it consists of a steel joint cutting step for cutting the grooved integrated steel pipe of the simultaneous injection steel pipe located at the entrance of the perforation hole by applying an impact with a hammer.
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