KR102604504B1 - Extension Type Co-Injection steel pipe and construction method using the same - Google Patents

Abstract

The present invention applies a backflow prevention module to prevent the grouting agent from flowing back, and the grouting injection pipe is made of Excel hose and PE hose to facilitate cutting or finishing work. It is manufactured and applied as one grouting injection pipe, and the partition wall is made of 2. It is possible to apply it beyond the point, and the construction time can be shortened by applying a caulking packer to make caulking work easier. In order to improve constructability, a steel pipe extension pipe is applied to improve steel pipe interference when installing support, and ETCI steel pipe and this. This is about the construction method used.

Description

ETCI steel pipe and construction method using the same {Extension Type Co-Injection steel pipe and construction method using the same}

The present invention relates to an ETCI steel pipe and a construction method using the same. More specifically, the backflow prevention module is applied to prevent the grouting agent from flowing back, and the grouting injection pipe is made of Excel hose and PE hose to facilitate cutting or finishing work. It is manufactured and applied as a single grouting injection pipe, allows the partition wall to be applied at more than 2 points, and applies a caulking packer to facilitate caulking work, shortening construction time, and applying a steel pipe extension pipe to improve constructability. This is about ETCI steel pipe and a construction method using it to improve steel pipe interference during support installation.

In general, grout or grouting is used to strengthen the bearing capacity of the excavated ground when constructing a tunnel, etc. in civil engineering work, or to inject filler into cracks and cavities in the ground for water leak prevention work and soil stability. This means that the filler (also called 'grouting material') is filled using gravity or a pump.

This grouting method installs a steel pipe in the ground, installs a packer inside the steel pipe, injects grouting material and solidifies it, making the steel pipe and the ground one, and increases the shear strength of the soil and rock. The injection is carried out inside the steel pipe. Therefore, it is a very advantageous construction method in terms of constructability and economic feasibility.

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

However, since this method inserts the steel pipe after drilling, it is impractical because it is difficult to insert the steel pipe in soft soil ground where the drill hole is difficult to maintain due to the collapse of the drill hole and the mixing of foreign substances.

Republic of Korea Patent No. 10-0478321

The purpose of the present invention is to prevent backflow of grouting agent inside the injection pipe using a backflow prevention module.

In addition, the purpose is to manufacture grouting injection pipes from Excel hose or PE hose to facilitate cutting or finishing work on site and to prevent damage when moving the steel pipe.

In addition, the purpose is to enable production of more than 2 points by applying a partition wall inside the steel pipe.

In addition, the purpose is to facilitate caulking work by ensuring that the grouting steel pipe is fixed on the drilled hole using a caulking packer.

In addition, the purpose is to improve steel pipe interference during support installation by applying steel pipe extension pipes to improve constructability.

The present invention is characterized by an ETCI steel pipe that penetrates into the ground and allows grouting to reinforce the ground, and a construction method using the same.

In one embodiment, the ETCI steel pipe is a circular pipe that is formed to be inserted into a drilling hole formed in a tunnel, and the grouting liquid injected into the grouting steel pipe can be discharged to the outside of the grouting steel pipe. A plurality of grouting ejection holes formed through the circumferential surface of the grouting steel pipe at regular intervals in the longitudinal direction, at least one space installed along the outer side of the grouting steel pipe to support the grouting steel pipe in the perforated hole, and the grouting steel pipe A cap formed on one end of the grouting steel pipe to finish the end, at least one partition installed to support the grouting injection pipe in the inner space of the grouting steel pipe, and grouting to supply grouting liquid into the interior of the grouting steel pipe. A grouting injection pipe installed in the center of the steel pipe, and a backflow prevention module formed so that both sides of the cut grouting injection pipe can be connected by cutting one side of the grouting injection pipe to prevent backflow after injection of the grouting liquid injected through the grouting injection pipe. And, the injection pipe fixture is formed on both sides of the backflow prevention module so that the grouting steel pipe cut on both sides can be inserted into both sides of the backflow prevention module, and when injecting from one side through the grouting injection pipe, the grouting liquid is injected to the other side by pushing the unit spring. , a check unit formed inside the backflow prevention module that returns to the initial position by the unit spring upon completion of grouting solution injection and adheres closely to the injection pipe fixture on one side to prevent the grouting solution injected to the other side from flowing back in one direction; and a grouting solution. A unit spring formed in close contact with the check unit on one side of the backflow prevention module to push the check unit, which has been moved to the other side of the backflow prevention module by the injection pressure during injection, to the initial position when injection is completed, and the length of the grouting steel pipe depending on the construction. When extending, the connection socket is formed to connect the grouting steel pipe on one side and the grouting steel pipe on the other side by mutual screw connection, supports one side of the grouting injection pipe, and prevents one side from leaking grouting liquid from inside the grouting steel pipe. The grouting steel pipe is deeply inserted into the drilling hole to install a finishing cover that is formed on one side of the grouting steel pipe and a support material when inserting the grouting steel pipe into the drilling hole. After inserting the grouting steel pipe, it can be separated and reused, or the grouting pipe can be separated by cutting the cutting groove. A steel pipe extension pipe extending from one end of the steel pipe, a cutting groove formed around one side of the steel pipe extension pipe to cut and separate the steel pipe extension pipe protruding outside the drilling hole, and a grouting pipe installed on the outside of the rear end of the steel pipe, either on the outside or the inside. It includes a caulking packer that is formed to seal the gap between the grouting steel pipe and the drilling hole by injecting the caulking liquid at a certain location. The ETCI steel pipe and the construction method using the same include forming a drilling hole for inserting the ETCI steel pipe. For this purpose, a 13M drilling operation step to drill a 13M drilling hole at the end of the tunnel, a steel pipe insertion step to insert a grouting steel pipe into the drilling hole formed by the drilling operation step, and a grouting steel pipe installed around the grouting steel pipe at the entrance to the drilling hole. A caulking operation step for fixing the grouting steel pipe in the drilled hole by injecting caulking liquid into the caulking packer, a steel pipe extension pipe separation step for separating the steel pipe extension pipe from the grouting steel pipe to prevent interference with the support material when reinstalling the support, and the inside of the grouting steel pipe. A grouting liquid injection step in which the grouting liquid is injected to fill the inside of the grouting steel pipe and flows out to the outside to fill the drilled hole and the inside of the grouting steel pipe, and a support material installation in which a support material is installed on the inside of the tunnel after the grouting liquid injection step. It consists of steps, and the ETCI steel pipe and the construction method using it include a 13M drilling operation step to drill a 13M drilling hole at the end of the tunnel to form a drilling hole for inserting the ETCI steel pipe, and a drilling operation step formed by the drilling operation step. A steel pipe insertion step for inserting the grouting steel pipe into the drilling hole, a caulking operation step for finishing the entrance of the drilling hole by injecting caulking fluid between the grouting steel pipe at the entrance of the drilling hole and the drilling hole, and injecting the grouting fluid into the grouting steel pipe. A grouting liquid injection step in which the grouting liquid is injected to fill the inside of the grouting steel pipe and flows out to the outside to fill the drilled hole and the inside of the grouting steel pipe, and support material installation to cut the steel pipe extension pipe so as not to interfere with the support material when excavating the support material installation location. It is characterized by being done in stages.

In another embodiment, the ETCI steel pipe further includes a horizontal maintaining insertion portion for allowing the grouting steel pipe inserted into the drilling hole to be inserted while maintaining the level with the drilling hole, and the horizontal maintaining insertion portion is a variable device. 1. When closely fixing the first mounting plate fixed to the upper side of the drilling hole entrance side by the first plate fixing bolt to support one side of the adjustment bar, and the first mounting plate attached to the upper side of the drilling hole entrance side, 1. A first plate protection pad formed on one side of the first mount fixing plate to attenuate vibration applied to the side of the mount fixing plate, and a first plate formed in the form of a screw fastening to fix the first mount fixing plate to the upper side of the entrance side of the drilling hole. A first fixing hinge formed on one side of the first fixing plate so that one side of the plate fixing bolt and the first adjustment bar can be combined and rotated, and a first origin sensor is installed on the upper side of the drilling hole entrance to detect the horizontality of the upper side of the drilling hole. A first origin member formed on the side, one side is connected to the first fixed hinge, and the other side is connected to the first variable bar hinge to adjust the level by pushing or pulling the entry plate when the first control cylinder is driven. A first adjusting bar, a first cylinder fixing plate formed on one side of the first fixing plate so that the first adjusting cylinder can be seated, and a first adjusting cylinder seated on the first cylinder fixing plate to push or pull the first adjusting bar, and , When the cylinder axis of the first control cylinder and the first control bar are connected, the first control bar is rotated in driving the first control cylinder to push or pull the first control bar, so that the cylinder of the first control cylinder is centered at the first control bar. A first cylinder hinge formed so that the axis can be connected, a first bar variable hinge formed on one side of the upper part of the entry plate so that the other side of the first control bar can be connected, and a first origin member are detected and the sensed information is sent. 1. A first origin sensor formed on one side of the entry end formed on the other side of the upper part of the entry plate to provide it to the control cylinder side, and a second plate fixed on the lower side of the entrance side of the drilling hole to support one side of the variable second adjustment bar. A second fixing plate is formed on one side of the second fixing plate to attenuate the vibration applied to the second fixing plate when the second fixing plate is fixed by bolts and the second fixing plate is attached to the lower side of the entrance to the drilling hole. The second plate protection pad, the second plate fixing bolt formed in the form of a screw fastener to fix the second plate to the lower side of the entrance to the drill hole, and one side of the second adjustment bar are combined so that they can be rotated. A second fixing hinge formed on one side of the mounting plate, a second origin member formed on the lower side of the entrance to the drilling hole so that the second origin sensor detects the upper horizontality of the drilling hole, and an entry mounting plate when the second control cylinder is driven. One side is connected to the second fixed hinge to adjust the level by pushing or pulling, and the other side is connected to the second bar variable hinge, and one side of the second fixing plate so that the second adjustment cylinder can be seated. a second cylinder holder formed by a second cylinder holder, a second control cylinder seated on the 2nd cylinder holder to push or pull the second control bar, and a second control cylinder when the cylinder axis of the second control cylinder and the second control bar are connected. A second cylinder hinge formed so that the cylinder axis of the second control cylinder is connected to the center of the second control bar so that the second control bar rotates to push or pull the second control bar in the driving of the second control bar, and the other side of the second control bar A second bar variable hinge is formed on one side of the lower part of the entry plate so that it can be connected, and one side of the entry end is formed on the other side of the lower part of the entry plate to detect the second origin member and provide the detected information to the second control cylinder. The second origin sensor, which is connected to the first control cylinder and the second control cylinder when the first control cylinder and the second control cylinder are driven, is connected by a first control bar on one upper side so as to support the grouting steel pipe so that the grouting steel pipe can be inserted into the perforation hole. , an entry plate on one side of the lower part connected by a second control bar, an entry end formed on both sides of the entry plate to support the grouting steel pipe entering the entry plate, and an entry plate so that the grouting steel pipe can move through. It is characterized by including a steel pipe hole formed in the center of the plate.

As mentioned above, the backflow prevention module is used to prevent backflow of the grouting agent inside the injection pipe, which has the effect of shortening construction time by eliminating the need to bend or block the grouting injection pipe, and the need to apply a quick-setting agent so that the grouting agent can harden quickly. This provides the effect of reducing costs.

In addition, the grouting injection pipe is made of Excel hose or PE hose, making it easy to cut or finish on site, and preventing damage to the hose when moving the steel pipe within the tunnel.

In addition, by applying a partition wall inside the steel pipe, it provides the effect of making it possible to manufacture it according to the site.

In addition, it provides the effect of shortening construction time during caulking work to secure grouting steel pipes using a caulking packer.

In addition, the steel pipe extension pipe is applied to improve constructability by improving steel pipe interference during support installation.

Figure 1 is a diagram showing the ETCI steel pipe of the present invention and the construction method using the same.
Figure 2 is a diagram showing another embodiment of Figure 1.
Figures 3a and 3b are block diagrams of the construction method for Figure 1.
Figure 4 is a view showing a horizontal maintenance insertion part, which is another embodiment of the present invention.
Figure 5 is a detailed view of Figure 4.
Figure 6 is a view showing a mixing fixing unit, which is another embodiment of the present invention.
Figure 7 is a detailed view of Figure 6.
Figure 8 is a view showing a steel pipe support portion according to another embodiment of the present invention.
Figure 9 is a detailed view of Figure 8.
Figure 10 is a view showing a drilling hole heating unit, which is another embodiment of the present invention.
Figure 11 is a detailed view of Figure 10.

The detailed description of the present invention described below refers to the accompanying drawings, which show by way of example 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 invention. It should be understood that the various embodiments of the invention are different from one another but are not necessarily mutually exclusive. For example, specific shapes, structures and characteristics described herein may be implemented in one embodiment without departing from the spirit and scope of the invention. Additionally, 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 invention. Accordingly, the detailed description that follows is not intended to be taken in a limiting sense, and the scope of the invention is limited only by the appended claims, together with all equivalents to what those claims assert, if properly described. Similar reference numbers in the drawings refer to identical or similar functions across various aspects.

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

Figure 1 is a view showing the ETCI steel pipe 100 of the present invention and the construction method using the same, Figure 2 is a view showing another embodiment of Figure 1, and Figures 3a and 3b are Figures This is a block diagram of the construction method for 1.

As shown in the drawing, the ETCI steel pipe 100 of the present invention is characterized in that it penetrates into the ground and allows grouting to reinforce the ground.

The ETCI steel pipe 100 includes a grouting steel pipe 110, a grouting discharge hole 111, a space 112, a cap 113, a partition wall 114, a grouting injection pipe 514, 115, and a backflow prevention module 116. ), injection pipe (514) fixture (117), check unit (118), unit spring (119), connection socket (120), finishing cover (121), steel pipe extension pipe (122), cutting groove (123), caulking packer It is characterized by containing (124).

The grouting steel pipe 110 is a circular pipe formed in a tunnel, and the grouting steel pipe 110 is formed to be inserted into a drilled hole.

The grouting discharge hole 111 is formed to discharge the grouting liquid injected into the grouting steel pipe 110 to the outside of the grouting steel pipe 110, and the grouting discharge hole 111 is the grouting steel pipe ( 110) It is characterized by forming a plurality of penetrations at regular intervals in the longitudinal direction on the circumferential surface.

The space 112 is characterized in that at least one space is installed along the outer side of the grouting steel pipe 110 and is formed to support the grouting steel pipe 110 in the drilled hole.

The cap 113 is formed to finish the end of the grouting steel pipe 110, and the cap 113 is formed at one end of the grouting steel pipe 110.

The partition wall 114 is formed to support the grouting injection pipes 514 and 115 in the inner space of the grouting steel pipe 110, and is characterized in that at least one partition wall 114 is installed.

The grouting injection pipes 514 and 115 are formed to supply grouting liquid into the interior of the grouting steel pipe 110. The grouting injection pipes 514 and 115 are installed in the center of the grouting steel pipe 110. It is characterized by being

The backflow prevention module 116 is formed to prevent backflow of the grouting liquid injected through the grouting injection pipes 514 and 115, and the backflow prevention module 116 is formed through the grouting injection pipe 514 ( 115) It is characterized in that one side is cut so that both sides of the cut grouting injection pipe (514) (115) can be connected.

The injection pipe 514 fixture 117 is formed so that the grouting steel pipe 110 cut on both sides can be inserted into both sides of the backflow prevention module 116, and the injection pipe 514 fixture 117 prevents backflow. It is characterized in that it is formed on both sides of the module 116.

When the check unit 118 is injected from one side through the grouting injection pipes 514 and 115, the grouting liquid is injected to the other side by pushing the unit spring 119, and when injection of the grouting liquid is completed, the grouting liquid is injected into the other side by the unit spring 119. It is returned to the initial position and is in close contact with the injection pipe 514 fixture 117 on one side to prevent the grouting liquid injected into the other side from flowing back in one direction. The check unit 118 is located inside the backflow prevention module 116. It is characterized by being formed by.

The unit spring 119 is formed to push the check unit 118, which has been moved to the other side of the backflow prevention module 116 by the injection pressure when injecting the grouting liquid, to its initial position when injection is completed. The unit spring 119 is characterized in that it is formed in close contact with the check unit 118 on one side of the backflow prevention module 116.

The connection socket 120 is characterized in that it is formed to connect the grouting steel pipe 110 on one side and the grouting steel pipe 110 on the other side by mutual screw coupling when the length of the grouting steel pipe 110 is extended according to construction. .

The finishing cover 121 supports one side of the grouting injection pipes 514 and 115, and is formed to prevent one side from leaking the grouting liquid from inside the grouting steel pipe 110. The finishing cover 121 is It is characterized by being joined to one side of the grouting steel pipe (110).

The steel pipe extension pipe 122 inserts the grouting steel pipe 110 deeply into the drilling hole for installation of a support material when inserting the grouting steel pipe 110 into the drilling hole, and can be separated and reused after inserting the grouting steel pipe 110, or can be reused by cutting grooves ( 123) is formed to be separated by cutting, and the steel pipe extension pipe 122 is characterized in that it extends from one end of the grouting steel pipe 110.

The cutting groove 123 is formed to cut and separate the steel pipe extension pipe 122 protruding outside the drilling hole. The cutting groove 123 is formed around one side of the steel pipe extension pipe 122.

The caulking packer 124 is installed on the outside of the rear end of the grouting steel pipe 110, and is formed to seal the gap between the grouting steel pipe 110 and the drilled hole by injecting caulking liquid from either the outside or the inside. It is characterized by being

The ETCI steel pipe 100 and the construction method using it consist of the following steps.

1) 13M drilling operation step to drill a 13M drilling hole at the end of the tunnel to form a drilling hole for inserting the ETCI steel pipe (100)

2) Steel pipe insertion step for inserting the grouting steel pipe 110 into the drilling hole formed by the drilling operation step.

3) A caulking operation step to fix the grouting steel pipe (110) to the drilling hole by injecting caulking liquid into the caulking packer (124) installed around the grouting steel pipe (110) at the entrance to the drilling hole.

4) Steel pipe extension pipe (122) separation step to separate the steel pipe extension pipe (122) from the grouting steel pipe (110) to prevent interference with the support material when reinstalling the support.

5) A grouting liquid injection step in which the grouting liquid is injected into the grouting steel pipe 110 to fill the inside of the grouting steel pipe 110, and then flows out to the outside to fill the drilled hole and the inside of the grouting steel pipe 110.

6) Support re-installation step of installing support materials on the inside of the tunnel after the grouting fluid injection step.

The ETCI steel pipe 100 and the construction method using it consist of the following steps.

1) 13M drilling operation step to drill a 13M drilling hole at the end of the tunnel to form a drilling hole for inserting the ETCI steel pipe (100)

2) Steel pipe insertion step for inserting the grouting steel pipe 110 into the drilling hole formed by the drilling operation step.

3) A caulking operation step to finish the entrance of the perforation hole by injecting caulking liquid between the grouting steel pipe 110 at the entrance of the perforation hole and the perforation hole.

4) A grouting liquid injection step in which the grouting liquid is injected into the grouting steel pipe 110 to fill the inside of the grouting steel pipe 110, and then flows out to the outside to fill the perforated hole and the inside of the grouting steel pipe 110.

5) Steel pipe extension pipe cutting step to separate the steel pipe extension pipe from the grouting steel pipe after grouting fluid injection.

6) Support re-installation step to install support material after cutting the steel pipe extension pipe

The drawings and descriptions in the present invention are intended to show the construction state for explaining the present invention, and the configuration conditions and configuration form may be changed within the scope of the present invention depending on the work environment or working conditions of the site.

Figure 4 is a diagram showing the horizontal maintenance insertion part 200, which is another embodiment of the present invention, and Figure 5 is a detailed view of Figure 4.

As shown in the drawing, the horizontal maintaining insertion portion 200 is further included in the ETCI steel pipe 100 of the present invention, and the horizontal maintaining insertion portion 200 includes a grouting steel pipe 110 inserted into the drilling hole. It is characterized in that it can be inserted while maintaining level with the drilling hole.

The horizontal maintenance insertion part 200 includes a first fixing plate 210, a first plate protection pad 211, a first plate fixing bolt 212, a first fixing hinge 213, and a first origin member 214. , first control bar (215), first cylinder fixer (216), first control cylinder (217), first cylinder hinge (218), first bar variable hinge (219), first origin sensor (220), Second fixing plate (230), second plate protection pad (231), second plate fixing bolt (232), second fixing hinge (233), second origin member (234), second adjustment bar (235), 2nd cylinder fixer (236), 2nd control cylinder (237), 2nd cylinder hinge (238), 2nd variable bar hinge (239), 2nd origin sensor (240), entry plate (250), entry end (251) and a steel pipe hole (252).

The first mount fixing plate 210 is formed to support one side of the variable first adjustment bar 215, and the first mount fixing plate 210 is provided with a first plate fixing bolt ( It is characterized by being fixedly formed by 212).

The first plate protection pad 211 is formed to attenuate vibration applied to the first mount and fixing plate 210 when the first mount and fixing plate 210 attached to the upper side of the entrance side of the drilling hole is closely fixed. The first plate protection pad 211 is formed on one side of the first fixing plate 210.

The first plate fixing bolt 212 is formed to fix the first fixing plate 210 to the upper side of the drill hole entrance side, and the first plate fixing bolt 212 is formed in a screw fastening form. Do it as

The first fixed hinge 213 is formed so that one side of the first adjustment bar 215 can be coupled and rotated, and the first fixed hinge 213 is formed on one side of the first holding plate 210. It is characterized by

The first origin member 214 is formed so that the first origin sensor 220 detects the upper horizontality of the drilling hole, and the first origin member 214 is formed on the upper side of the entrance to the drilling hole. do.

The first control bar 215 is formed to adjust the level by pushing or pulling the entry plate 250 when the first control cylinder 217 is driven. One side of the first control bar 215 is It is connected to the first fixed hinge 213, and the other side is connected to the first variable bar hinge 219.

The first cylinder holder 216 is formed so that the first control cylinder 217 can be seated, and the first cylinder holder 216 is formed on one side of the first holding plate 210.

The first control cylinder 217 is formed to push or pull the first control bar 215, and the first control cylinder 217 is seated on the first cylinder holder 216.

The first cylinder hinge 218 causes the first control bar 215 to rotate when the cylinder axis of the first control cylinder 217 and the first control bar 215 are connected to the first control cylinder 217. It is formed to push or pull the first adjustment bar 215, and the first cylinder hinge 218 is formed so that the cylinder axis of the first adjustment cylinder 217 can be connected to the center of the first adjustment bar 215. It is characterized by being

The first variable bar hinge 219 is formed so that the other side of the first control bar 215 can be connected, and the first variable bar hinge 219 is formed on one upper side of the entry plate 250. Do it as

The first origin sensor 220 is formed to detect the first origin member 214 and provide the sensed information to the first control cylinder 217. The first origin sensor 220 is an entry plate. (250) It is characterized in that it is formed on one side of the entry end 251, which is formed on the other side of the upper part.

The second mount fixing plate 230 is formed to support one side of the variable second adjustment bar 235. The second mount fixing plate 230 is provided with a second plate fixing bolt ( 232) is characterized in that it is fixedly formed.

The second plate protection pad 231 is formed to attenuate vibration applied to the second fixing plate 230 when the second fixing plate 230 attached to the lower side of the entrance to the drilling hole is closely fixed. The second plate protection pad 231 is formed on one side of the second fixing plate 230.

The second plate fixing bolt 232 is formed to fix the second fixing plate 230 to the lower side of the drill hole entrance side, and the second plate fixing bolt 232 is formed in a screw fastening form. Do it as

The second fixed hinge 233 is formed so that one side of the second adjustment bar 235 can be coupled and rotated. The second fixed hinge 233 is formed on one side of the second holding plate 230. It is characterized by

The second origin member 234 is formed so that the second origin sensor 240 detects the upper horizontality of the drilling hole, and the second origin member 234 is formed on the lower side of the entrance to the drilling hole. do.

The second control bar 235 is formed to adjust the level by pushing or pulling the entry plate 250 when the second control cylinder 237 is driven. One side of the second control bar 235 is It is connected to the second fixed hinge 233, and the other side is connected to the second variable bar hinge 239.

The second cylinder holder 236 is formed so that the second control cylinder 237 can be seated, and the second cylinder holder 236 is formed on one side of the second holding plate 230.

The second control cylinder 237 is formed to push or pull the second control bar 235, and the second control cylinder 237 is seated on the second cylinder fixer 236.

The second cylinder hinge 238 rotates when the cylinder axis of the second control cylinder 237 and the second control bar 235 are connected and the second control cylinder 237 is driven. It is formed to push or pull the second control bar 235, and the second cylinder hinge 238 is formed so that the cylinder axis of the second control cylinder 237 can be connected to the center of the second control bar 235. It is characterized by being

The second variable bar hinge 239 is formed so that the other side of the second control bar 235 can be connected, and the second variable bar hinge 239 is formed on one side of the lower part of the entry plate 250. Do it as

The second origin sensor 240 is formed to detect the second origin member 234 and provide the detected information to the second control cylinder 237. The second origin sensor 240 is an entry plate. (250) It is characterized by being formed on one side of the entry end 251, which is formed on the other side of the lower part.

The entry plate 250 is horizontal with the drilling hole when the first control cylinder 217 and the second control cylinder 237 are driven, so that the grouting steel pipe 110 is inserted into the drilling hole. It is formed to support, and the entry plate 250 is characterized in that one upper side is connected by a first adjustment bar 215 and one lower side is connected by a second adjustment bar 235.

The entry end 251 is formed to support the grouting steel pipe 110 entering the entry plate 250, and the entry end 251 is formed on both sides of the entry plate 250. do.

The steel pipe hole 252 is formed so that the grouting steel pipe 110 can move through it, and the steel pipe hole 252 is formed in the center of the entry plate 250.

Figure 6 is a diagram showing the mixing fixing unit 300, which is another embodiment of the present invention, and Figure 7 is a detailed view of Figure 6.

As shown in the drawing, the mixing fixing part 300 is a configuration further included in the ETCI steel pipe 100 of the present invention, and the mixing fixing part 300 is injected by mixing the grouting liquid injected into the drilling hole. It is designed to remove air from the grouting liquid and to increase the adhesion between the drilled hole and the grouting steel pipe (110) when the grouting liquid hardens.

The mixed fixing part 300 includes a metal fixing member 310, a member bolt 311, a binding magnetic 312, a rotating support plate 313, a magnetic lever 314, a rotating groove 315, and a rotating bearing 316. , It is characterized in that it includes a rotation motor 317, a rotating plate 318, a fixing protrusion 319, a fastening magnetic 320, a driving lever 321, and a mixing fixing bar 322.

The metal fixing member 310 is formed to be detachable by combining a binding magnet 312. The metal fixing member 310 is fixed by member bolts 311 on the upper and lower sides of the entrance to the drilling hole. It is characterized by

The member bolt 311 is formed to secure the metal fixing member 310 to the entrance side of the drilling hole. The member bolt 311 is formed to penetrate the metal fixing member 310.

The binding magnetic 312 is formed to be attachable to and detachable from the metal fixing member 310 by magnetism. The binding magnetic 312 is characterized in that it is formed as a circular member.

The rotation support plate 313 is formed to support the rotating rotation plate 318, and the rotation support plate 313 is formed on one side of the coupling magnetic 312.

The magnetic lever 314 is formed to drive the magnetism of the coupling magnet 312, and the magnetic lever 314 is formed to drive each coupling magnet 312 to one side and the other side of the rotating plate 318. It is characterized by

The rotation groove 315 is formed so that the rotation plate 318 can be coupled and rotated, and the rotation groove 315 is formed on one side of the rotation plate 318.

The rotation bearing 316 is formed so that the rotation plate 318 can rotate based on the rotation support plate 313, and the rotation bearing 316 is coupled to the inside of the rotation groove 315.

The rotation motor 317 is formed to generate a driving force to rotate the rotation plate 318, and the rotation motor 317 is fixed to the other side of the rotation support plate 313.

The rotating plate 318 is formed so that one side is in close contact with the rotating bearing 316 and rotates without friction on the rotating support plate 313 to rotate the fixing protrusion 319. The rotating plate 318 is formed by a rotating motor 317. It is characterized in that it is connected to the motor shaft of.

The fixing protrusion 319 is formed so that the fastening magnet 320 can be coupled to it, and the fixing protrusion 319 is formed on one side of the rotating plate 318.

The fastening magnetic 320 is formed so that the mixed fixing bar 322 and the fixing protrusion 319 can be coupled to each other by magnetism. The fastening magnetic 320 is formed by combining the fixing protrusion 319 and the mixed fixing bar 322. It is characterized by the formation of a bond between them.

The driving lever 321 is formed to drive the magnetism of the fastening magnetic 320, and the driving lever 321 is formed on one side of the fastening magnetic 320.

The mixing fixing bar 322 rotates between the drilled hole and the grouting steel pipe 110 when the rotating plate 318 rotates, and is coupled to the fastening magnetic 320 by magnetism, so that it is connected to the fastening magnetic 320 when the grouting liquid hardens. It is characterized in that it is formed so as to be detachable.

Figure 8 is a diagram showing a steel pipe support 400, which is another embodiment of the present invention, and Figure 9 is a detailed view of Figure 8.

As shown in the drawing, the steel pipe support 400 is further included in the ETCI steel pipe 100 of the present invention, and the steel pipe support 400 is grouted so that the grouting steel pipe 110 can be fixed and supported on the drilled hole. It is characterized in that it is formed by combining with the steel pipe 110.

The steel pipe support portion 400 includes a pipe coupling flange 410, a connector member 411, a rotary connector 412, a connector groove 413, a rotary hinge 414, an adjustable rotary bar 415, and a plate hinge 416. , a contact plate 417, a contact tube 418, and a hardened capsule 419.

The pipe coupling flange 410 is formed to support the contact plate 417 in close contact with the drilled hole when the rotary bar 415 rotates. The pipe coupling flange 410 is provided in plural pieces on the grouting steel pipe 110. It is characterized by being formed by bonding.

The connector member 411 is formed to support the rotation of the rotatable bar 415, and is characterized in that a plurality of connector members 411 are formed at a predetermined angle around the pipe coupling flange 410.

The rotation connector 412 is formed to rotate the rotation variable bar 415 by inserting a rotation means into the connector groove 413 and rotating it. The rotation connector 412 is formed on one side of the connector member 411. It is characterized by

The connector groove 413 is formed so that a rotation means can be inserted, and the connector groove 413 is formed on one side of the rotation connector 412.

The rotation hinge 414 is formed so that the rotation variable bar 415 can be rotated based on the connector member 411. One side of the rotation hinge 414 is connected to the rotation connector 412, and the other side is connected to the rotation connector 412. It is characterized by being connected to one side of the rotatable bar 415 through the connector member 411.

The adjustable rotation bar 415 is formed to rotate the contact plate 417 from the pipe coupling flange 410 to the inner surface of the drilling hole, and one side of the adjustable rotation bar 415 is connected to the rotating hinge 414. , The other side is connected to the contact plate 417 by a plate hinge 416.

The plate hinge 416 is formed so that the contact plate 417 can be rotated with respect to the rotation variable bar 415 when the rotation variable bar 415 is rotated. The plate hinge 416 is a contact plate ( 417) It is characterized by being formed in the center.

The contact plate 417 is formed by a plate hinge 416 on one side of the rotatable bar 415, and is formed to come into close contact with the inner surface of the drilled hole when the rotatable bar 415 rotates.

The adhesion tube 418 is formed to burst due to the pressure of the adhesion plate 417 coming into close contact with the inner surface of the perforated hole. The adhesion tube 418 is formed on one side of the adhesion plate 417. It is characterized by being

The hardened capsule 419 is formed to increase the adhesion between the inner surface of the perforated hole and the contact plate 417 when the adhesion tube 418 bursts. The cured capsule 419 is formed inside the adhesion tube 418. It is characterized by being built in.

Figure 10 is a diagram showing a drilled hole heating unit 500, which is another embodiment of the present invention, and Figure 11 is a detailed view of Figure 10.

As shown in the drawing, the drilling hole heating unit 500 is further included in the ETCI steel pipe 100 of the present invention, and the drilling hole heating unit 500 provides hot air inside the drilling hole to be injected into the drilling hole. It is characterized by increasing the curing speed of the grouting liquid.

The drilling hole heating unit 500 includes a seating opening and closing plate 510, an opening and closing hinge 511, a plate fastening bolt 512, a hot air blower 513, an injection pipe 514, a pressure regulator 515, a connecting rod 516, It is characterized by including a detachable member 517, a tube holder 518, an injection tube 519, an injection hole 520, and a temperature sensor 521.

The seating opening/closing plate 510 is formed so that the hot air blower 513 can be seated, and the seating opening/closing plate 510 is fixed to one side of the entrance to the drilling hole so as to be openable and closed.

The opening and closing hinge 511 is formed so that one side of the seating opening and closing plate 510 is fixed to one side of the entrance to the drilling hole and the other side can be opened and closed by rotation. It is characterized by being formed on the central side.

The plate fastening bolt 512 is formed to secure the seating opening/closing plate 510 to one side of the entrance to the drilling hole.

The hot air blower 513 is formed to generate warm air to be provided to the injection tube 519 through the injection pipe 514 and the pressure regulator 515, and the hot air blower 513 is seated on the seating opening and closing plate 510. It is characterized by being

The injection pipe 514 is formed to provide warm air generated by the hot air blower 513 to the injection tube 519. One side of the injection pipe 514 is connected to one side of the hot air blower 513, and the other side is detachable. It is characterized by being coupled to the member 517.

The pressure regulator 515 is formed to regulate the pressure of warm air to be provided to the injection tube 519, and the pressure regulator 515 is formed on one side of the injection tube 514.

The connecting stand 516 has a detachable member 517 formed on one side to support one side of the injection tube 514 and one side of the injection tube 519, and is formed on the other side so that the injection tube 519 can be connected. (516) is characterized in that it is formed on one side of the outer circumference of the grouting steel pipe (110).

The detachable member 517 is formed so that the injection pipe 514 for injecting warm air can be detached, and the detachable member 517 is formed on one side of the connection stand 516.

The tube fixture 518 is formed to support the other side of the injection tube 519 coupled to one side of the connecting pole 516, and the tube fixture 518 is formed on the other side of the outer circumference of the grouting steel pipe 110. Do it as

The injection tube 519 is formed to move the warm air provided from the injection pipe 514 to the inner surface of the drilling hole, and one side of the injection tube 519 is connected to the connecting stand 516. , The other side is connected to the tube fixture 518.

The injection hole 520 is formed to spray warm air provided from the injection tube 514 toward the inner surface of the perforated hole, and a plurality of injection holes 520 are formed on the injection tube 519.

The temperature sensor 521 is formed to detect the temperature of the inner surface of the drilling hole and provide the detected information to the hot air blower 513 so that the hot air blower 513 can be driven and stopped according to the temperature of the inner surface of the drilled hole. , the temperature sensor 521 is characterized in that it is formed on one side of the tube fixture 518.

The above-described embodiments are for illustrative purposes, and those skilled in the art will recognize that the above-described embodiments can be easily modified into other specific forms without changing the technical idea or essential features of the above-described embodiments. You will understand. Therefore, the above-described embodiments should be understood in all respects as illustrative and not restrictive. For example, each component described as unitary may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope sought to be protected through this specification is indicated by the patent claims described later rather than the detailed description above, and should be interpreted to include the meaning and scope of the claims and all changes or modified forms derived from the equivalent concept. .

100: ETCI steel pipe
110: Grouting steel pipe 111: Grouting blowout hole
112: space 113: cap
114: Bulkhead 115: Grouting injection pipe
116: backflow prevention module 117: injection pipe fixture
118: check unit 119: unit spring
120: Connection socket 121: Finishing cover
122: Steel pipe extension pipe 123: Cutting groove
124: Caulking packer
200: Horizontal maintenance insertion part 210: First fixing plate
211: First plate protection pad 212: First plate fixing bolt
213: first fixed hinge 214: first origin member
215: 1st adjustment bar 216: 1st cylinder fixing bar
217: first control cylinder 218: first cylinder hinge
219: first variable hinge 220: first origin sensor
230: Second fixing plate 231: Second plate protection pad
232: 2nd plate fixing bolt 233: 2nd fixing hinge
234: second origin member 235: second adjustment bar
236: 2nd cylinder fixer 237: 2nd control cylinder
238: 2nd cylinder hinge 239: 2nd bar variable hinge
240: Second origin sensor 250: Entry plate
251: Entry end 252: Steel pipe hole
300: Mixing fixing member 310: Metal fixing member
311: member bolt 312: binding magnetic
313: Rotation support plate 314: Magnetic lever
315: rotation groove 316: rotation bearing
317: rotation motor 318: rotation plate
319: fixing protrusion 320: fastening magnetic
321: Driving lever 322: Mixing fixing bar
400: Steel pipe support 410: Pipe coupling flange
411: Connector member 412: Rotating connector
413: Connector groove 414: Rotation hinge
415: Adjustable rotation bar 416: Plate hinge
417: Adhesion plate 418: Adhesion tube
419: Hardened capsule
500: Perforated hole heating unit 510: Seating opening and closing plate
511: Opening/closing hinge 512: Plate fastening bolt
513: Heater 514: Injection pipe
515: pressure regulator 516: connecting rod
517: Detachable member 518: Tube fixture
519: injection tube 520: injection hole
521: Temperature sensor

Claims (3)

In the ETCI steel pipe, which penetrates into the ground and allows grouting to reinforce the ground,
The ETCI steel pipe is,
A grouting steel pipe formed as a circular pipe to be inserted into a drilling hole formed in the tunnel,
A plurality of grouting discharge holes formed through the circumferential surface of the grouting steel pipe at regular intervals in the longitudinal direction to discharge the grouting liquid injected into the grouting steel pipe to the outside of the grouting steel pipe;
At least one space installed along the outer side of the grouting steel pipe and formed to support the grouting steel pipe in the drilled hole;
A cap formed on one end of the grouting steel pipe to finish the end of the grouting steel pipe,
At least one partition installed in the inner space of the grouting steel pipe to support the grouting injection pipe,
A grouting injection pipe installed in the center of the grouting steel pipe to supply grouting liquid into the interior of the grouting steel pipe,
In order to prevent backflow of the grouting liquid injected through the grouting injection pipe, one side of the grouting injection pipe is cut so that both sides of the cut grouting injection pipe can be connected;
Injection pipe fixtures formed on both sides of the backflow prevention module so that grouting steel pipes cut on both sides can be inserted into both sides of the backflow prevention module,
When injecting from one side through the grouting injection pipe, the grouting liquid is injected to the other side by pushing the unit spring. When the grouting liquid injection is completed, the unit spring returns to the initial position and is in close contact with the injection pipe fixture on one side, and the grouting liquid is injected to the other side. A check unit formed inside the backflow prevention module to prevent backflow in one direction,
A unit spring formed in close contact with the check unit on one side of the backflow prevention module to push the check unit, which has been moved to the other side of the backflow prevention module by the injection pressure when injecting the grouting liquid, to the initial position when the injection is completed;
When the length of the grouting steel pipe is extended according to construction, a connection socket is formed to connect the grouting steel pipe on one side and the grouting steel pipe on the other side by mutual screw connection,
A finishing cover formed on one side of the grouting steel pipe to support one side of the grouting injection pipe and prevent one side from leaking out of the grouting liquid inside the grouting steel pipe,
When inserting a grouting steel pipe into a drilling hole, the grouting steel pipe is deeply inserted into the drilling hole to install a support material, and after inserting the grouting steel pipe, it is separated and reused, or a steel pipe extension pipe is formed to extend at one end of the grouting steel pipe to be separated by cutting a cutting groove,
A cutting groove formed around one side of the steel pipe extension pipe to cut and separate the steel pipe extension pipe protruding outside the drilling hole,
It is installed on the outside of the rear end of the grouting steel pipe, and includes a caulking packer formed to seal the gap between the grouting steel pipe and the perforation hole by injecting caulking liquid from either the outside or the inside location,

The ETCI steel pipe and construction method using it are,
A 13M drilling operation step to drill a 13M drilling hole at the end of the tunnel to form a drilling hole for inserting an ETCI steel pipe,
A steel pipe insertion step for inserting a grouting steel pipe into the drilling hole formed by the drilling operation step,
A caulking operation step for fixing the grouting steel pipe to the drilling hole by injecting caulking liquid into a caulking packer installed around the grouting steel pipe at the entrance to the drilling hole,
A steel pipe extension pipe separation step to separate the steel pipe extension pipe from the grouting steel pipe to prevent interference with the support material when reinstalling the support,
A grouting liquid injection step of injecting the grouting liquid into the grouting steel pipe so that the grouting liquid fills the inside of the grouting steel pipe, and flows out to the outside to fill the perforated hole and the inside of the grouting steel pipe;
After the grouting liquid injection step, it consists of a support re-installation step in which support materials are installed inside the tunnel.

The ETCI steel pipe and construction method using it are,
A 13M drilling operation step to drill a 13M drilling hole at the end of the tunnel to form a drilling hole for inserting an ETCI steel pipe,
A steel pipe insertion step for inserting a grouting steel pipe into the drilling hole formed by the drilling operation step,
A caulking operation step for finishing the entrance of the perforation hole by injecting caulking liquid between the grouting steel pipe at the entrance of the perforation hole and the perforation hole;
A grouting liquid injection step of injecting the grouting liquid into the grouting steel pipe so that the grouting liquid fills the inside of the grouting steel pipe, and flows out to the outside to fill the perforated hole and the inside of the grouting steel pipe;
ETCI steel pipe, characterized in that it consists of a support installation step for cutting the steel pipe extension pipe so as not to interfere with the support material when excavating the support material installation location.
delete According to paragraph 1,
The ETCI steel pipe is,
It further includes a horizontal maintenance insertion part to ensure that the grouting steel pipe inserted into the drilling hole can be inserted while maintaining level with the drilling hole,
The horizontal maintenance insertion part,
A first fixing plate fixed by a first plate fixing bolt on the upper side of the entrance to the drilling hole to support one side of the first variable adjusting bar,
A first plate protection pad formed on one side of the first mount plate to attenuate vibration applied to the first mount plate when the first mount plate attached to the upper side of the entrance to the drilling hole is closely fixed;
A first plate fixing bolt formed in a screw-fastened form to fix the first fixing plate to the upper side of the entrance side of the drilling hole,
A first fixing hinge formed on one side of the first fixing plate so that one side of the first adjustment bar can be coupled and rotated,
A first origin member formed on the upper side of the entrance to the drilling hole so that the first origin sensor detects the upper horizontality of the drilling hole;
A first control bar, one side of which is connected to the first fixed hinge and the other side of which is connected to the first bar variable hinge, to adjust the level by pushing or pulling the entry plate when the first adjustment cylinder is driven;
A first cylinder fixing plate formed on one side of the first fixing plate so that the first regulating cylinder can be seated,
A first control cylinder that is seated and formed on the first cylinder fixture to push or pull the first control bar,
When the cylinder axis of the first control cylinder and the first control bar are connected, the first control bar is rotated in driving the first control cylinder to push or pull the first control bar, so that the cylinder axis of the first control cylinder is centered on the first control bar. A first cylinder hinge formed to be connected,
A first bar variable hinge formed on one side of the upper part of the entry plate so that the other side of the first adjustment bar can be connected,
A first origin sensor formed on one side of the entry end formed on the other side of the upper part of the entry plate to detect the first origin member and provide the detected information to the first control cylinder,
A second fixing plate fixed by a second plate fixing bolt on the lower side of the entrance to the drilling hole to support one side of the second variable adjusting bar,
A second plate protection pad formed on one side of the second fixing plate to attenuate vibration applied to the second fixing plate when the second fixing plate attached to the lower side of the entrance to the drilling hole is closely fixed;
A second plate fixing bolt formed in the form of a screw fastening to fix the second fixing plate to the lower side of the entrance to the drilling hole,
A second fixing hinge formed on one side of the second fixing plate so that one side of the second adjustment bar can be coupled and rotated,
A second origin member formed on the lower side of the entrance to the drilling hole so that the second origin sensor detects the upper horizontality of the drilling hole,
A second adjustment bar, one side of which is connected to the second fixed hinge and the other side of which is connected to the second bar variable hinge, to adjust the level by pushing or pulling the entry plate when the second adjustment cylinder is driven,
A second cylinder fixing plate formed on one side of the second fixing plate so that the second regulating cylinder can be seated,
A second control cylinder that is seated and formed on the second cylinder fixture to push or pull the second control bar,
When the cylinder axis of the second control cylinder and the second control bar are connected, the second control bar is rotated in driving the second control cylinder to push or pull the second control bar, so that the cylinder axis of the second control cylinder is centered on the second control bar. A second cylinder hinge formed to enable this connection,
A second bar variable hinge formed on one side of the lower part of the entry plate so that the other side of the second control bar can be connected,
A second origin sensor formed on one side of the entry end formed on the other side of the lower part of the entry plate to detect the second origin member and provide the sensed information to the second control cylinder,
When the first adjustment cylinder and the second adjustment cylinder are driven, the upper side is connected by the first adjustment bar to support the grouting steel pipe so that it is level with the drilling hole and inserted into the drilling hole, and the lower side is connected to the second adjustment bar. An entry plate connected by a bar,
An entry end formed on both sides of the entry plate to support the grouting steel pipe entering the entry plate,
An ETCI steel pipe characterized by including a steel pipe hole formed in the center of the entry plate so that the grouting steel pipe can be moved through.