KR100723024B1 - Construction establishment method and the structure for underground tunnel formation - Google Patents

Abstract

The present invention is a patent application No. 2002, the original application of the applicant to form a tunnel underground by excavating the inside of the structure to sufficiently resist the stress beforehand by installing the tunnel-forming structure in the ground without digging out the soil of the tunnel excavation in advance -36953 and Utility Model Registration No. 274812 and Patent Application No. 2004-10300 to further improve the technical content of the steel pipe protruding into the tunnel portion without being used as it is, as well as installing the girders on the side of the steel pipe By forming a ball and installing more girders, it is possible to construct a tunnel structure that is more robust, robust and waterproof even in a short time.

After the tunnel excavation, shotcrete or fuming material is placed on the steel pipe and waterproof steel plate exposed to the inside of the excavation part, or the formwork is installed inside the tunnel part, and concrete is finished to finish the tunnel wall to prevent corrosion of the steel pipe and the waterproof steel plate. The present invention relates to a method for installing a structure for forming an underground tunnel and a structure for easily constructing a beautiful tunnel forming structure.

Looking at an embodiment for realizing the present invention as described above,

Precisely measure the proper position along the tunnel construction plan before press-fitting the steel pipe (10), and the leading pipe (20) having the earth prevention plate inlet (21) formed at the tip of the steel pipe (10) and the press-fitting direction adjusting device (30) formed. Steel pipe press position measurement and leading pipe installation process to complete the preparation work for pressing the steel pipe 10 by combining;

Position the steel pipe 10 precisely in the propulsion position and press-in step by step using a hydraulic jack and a propulsion auxiliary pipe, perform a position measurement every 1M, and a press-fit direction adjusting device 30 formed in the lead pipe 20. Steel pipe press process to be constructed in the minimum error range using;

When the steel pipe 10 is pressed in the steel pipe press-in process, the earth prevention plate is installed by digging the surrounding soil through the earth prevention plate inlet 21 formed in the leading pipe 20, and then connecting the earth prevention plate 40 sequentially. Process;

When the installation of the steel pipe 10 press-fit and the earth prevention plate 40 is completed, the grouting unit may be grouted by grouting material around the earth prevention plate 40 through a grouting injection valve (not shown) installed in the steel pipe 10. An out-of-gang grouting process to prevent leakage of soil during excavation of the lower portion of the steel pipe 10 by forming 70) and of course to act as a degree;

When the in-gang grouting 70 and the steel pipe 10 pressurization is completed, the sides of the steel pipes 10 are cut at predetermined intervals to form a stress reinsertion hole 12, and a steel pipe connection pipe 16 to the stress reinsertion hole. B reinforcement, stress re-installation step of connecting and installing so as not to be separated by inserting the stress material 300 made of a circular beam (not shown);

When the stress re-installation process is completed, the steel pipe 10 is cut into a predetermined size so as to be positioned between the stress re-insertion holes 12 to form a girder installation hole 600, and dig soil through the girder installation hole 600. After securing the out-of-gang workspace (610),

The girder 700 is connected to the girder installation hole 600 installed in one steel pipe 10 and the girder installation hole 600 formed in the other steel pipe 10 adjacent thereto, and the out-of-gang work space 610. Steel pipe connection welding process to weld the steel pipes (10) to each other by a waterproof steel plate 120 to be completely waterproof;

After the steel pipes 10 are all connected to the waterproof steel plate 120, reinforcing bar or stress material is installed in the steel pipe 10 and the girder 700, and concrete pouring in the steel pipe to inject and cure concrete;

Tunnel surface excavation process for excavating the tunnel portion 500 outside the steel pipe 10 when all the concrete 400 injected into the steel pipe 10 is cured;

The tunnel bottom surface 800 is formed below the excavated tunnel portion 500, and shotcrete or fuming material is poured or corrosion into the tunnel portion 500 to prevent corrosion and aesthetics of the steel pipe 10 and the waterproof steel plate 120. After installing the formwork (not shown) is made, including the finishing process of forming the tunnel wall surface 900 by pouring concrete.

Description

Construction method and the structure for underground tunnel formation

1 is a block diagram of a lead pipe and a pipe used to practice the present invention.

Figure 2a, Figure 2b is a configuration diagram of a tunnel structure constructed by the present invention.

3 is a process flowchart showing one embodiment for realizing the present invention.

4 is a process flowchart showing another embodiment for realizing the present invention.

5 is a process flowchart showing still another embodiment for realizing the present invention.

Figure 6 is one configuration state of the waterproof steel sheet used in the present invention.

♣ Explanation of symbols for the main parts of the drawing

10: Steel pipe 12: Stress reinsertion hole

16: Steel pipe connection pipe 20: Leading pipe

21: Earth prevention plate inlet 30: Intrusion direction adjusting device

40: earth prevention plate 70: grouting part

120: waterproofing sheet 121: bending part

300: stressor for steel pipe connection 400: concrete

500: tunnel part 600: girder installation work

610: off-site workspace 700: girders

800: tunnel bottom 900: tunnel wall

The present invention is to provide a tunnel-forming structure in the ground first, without digging out the soil of the tunnel excavation portion in advance to sufficiently withstand the stress in advance, and then excavated the inside of the structure to form an underground tunnel, the patent application of the original patent application No. 2002 -36953 and Utility Model Registration No. 274812 and Patent Application No. 2004-10300 to further improve the technical content of the steel pipe protruding into the tunnel portion without being used as it is, as well as installing the girders on the side of the steel pipe By forming a ball and installing more girders, it is possible to construct a tunnel structure that is more robust, robust and waterproof even in a short time.

After the tunnel excavation, shotcrete or fuming material is placed on the steel pipe and waterproof steel plate exposed to the inside of the excavation part, or the formwork is installed inside the tunnel part, and concrete is finished to finish the tunnel wall to prevent corrosion of the steel pipe and the waterproof steel plate. The present invention relates to a method for installing a structure for forming an underground tunnel and a structure for easily constructing a beautiful tunnel forming structure.

There are patent applications 2002-36953, utility model registration 274812 and patent application 2004-10300.

All of the prior inventions and inventions of the present inventors are required to install tunnel-forming structures in the ground before they excavate the earth and sand of the tunnel excavation part in advance to sufficiently endure the stress and then to excavate the inside of the structure to form the underground tunnel. In this regard, the underground tunnel structure is more convenient, faster, and accurate in construction, and the structure is very solid structurally after installation and even after installation, so that tunnel excavation work can be stably eliminated, thus completely eliminating work risks. In addition, it is possible to form a tunnel with confidence, as well as to build a strong tunnel with less manpower, equipment and materials.

The present invention further adds a special process and structure to the advantages of the prior application and pre-registrations of the present invention, as it is used without cutting the inner surface of the steel pipe protruding into the tunnel, as well as girder on the side of the steel pipe By forming the installation hole and installing more girders, it is possible not only to construct a structure that is more robust, robust and waterproof, but also a perfect tunnel forming structure in a short time.

After the tunnel excavation, shotcrete or fuming material is placed on the steel pipe and waterproof steel plate exposed to the inside of the excavation part, or the formwork is installed inside the tunnel part, and concrete is finished to finish the tunnel wall to prevent corrosion of the steel pipe and the waterproof steel plate. The aim is to make it easy to construct a beautiful tunnel-forming structure.

Referring to the present invention in detail according to an embodiment for achieving the above object is as follows.

Example 1 (Detailed description will be made based on the accompanying drawings, FIGS. 1 to 2B and 3).

Embodiment 1 of the present invention is to accurately measure the proper position along the tunnel construction site before the steel pipe 10 press-fitting, and as shown in Figure 1, the earth prevention plate inlet 21 is formed at the tip of the steel pipe 10 and the press-fitting direction adjustment Steel pipe press position measurement and lead pipe installation process to combine the leading pipe 20, the device 30 is formed to complete the preparation work for the steel pipe 10 indentation;

Position the steel pipe 10 precisely in the propulsion position and press-in step by step using a hydraulic jack and a propulsion auxiliary pipe, perform a position measurement every 1M, and a press-fit direction adjusting device 30 formed in the lead pipe 20. Steel pipe press process to be constructed in the minimum error range using;

2a to 2b, when the steel pipe 10 is pressed in the steel pipe pressurization process, the earth is prevented by digging the surrounding soil through the earth prevention plate inlet 21 formed in the lead pipe 20, and then the earth prevention plate 40 in sequence. An earth prevention plate installation process for inputting and connecting;

When the installation of the steel pipe 10 press-fit and the earth prevention plate 40 is completed, the grouting unit may be grouted by grouting material around the earth prevention plate 40 through a grouting injection valve (not shown) installed in the steel pipe 10. An out-of-gang grouting process to prevent leakage of soil during excavation of the lower portion of the steel pipe 10 by forming 70) and of course to act as a degree;

When the in-gang grouting 70 and the steel pipe 10 pressurization is completed, as shown in (a) of FIG. 3, the side surfaces of the steel pipes 10 are cut at predetermined intervals to form a stress reinsertion hole 12, and the stress material A stress re-installation process of connecting and installing a steel pipe connection pipe 16 or a reinforcement rod and a stress member 300 made of a round bar beam (not shown) so as not to be separated;

When the stress re-installation process is completed, as shown in Figure 3 (b) is cut to a predetermined size inside the steel pipe (10) to position between the stress re-insertion hole 12 to form a girder mounting hole 600, the girder installation Digging soil through the ball 600 to secure the out-of-gang work space 610,

Girder 700 through the girder installation hole 600 installed in one steel pipe 10 and the girder installation hole 600 formed in the other steel pipe 10 adjacent thereto as shown in (c) and (d) of FIG. And connecting the steel pipe connection welding process so as to be completely waterproof by welding all of the steel pipes 10 to the waterproof steel plate 120 in the out-of-gang work space 610;

After connecting all the steel pipes 10 to the waterproof steel plate 120, as shown in Figure 3 (e) to install the reinforcement or stress material in the steel pipe 10 and the girder 700 to inject concrete to cure Concrete casting process in steel pipe;

Tunnel surface excavation process for excavating the tunnel portion 500 outside the steel pipe 10, as shown in Figures 2a and 2b when all of the concrete 400 injected into the steel pipe 10;

The tunnel bottom surface 800 is formed below the excavated tunnel portion 500, and shotcrete or fuming material is poured or corrosion into the tunnel portion 500 to prevent corrosion and aesthetics of the steel pipe 10 and the waterproof steel plate 120. After installing the formwork (not shown) is made, including the finishing process of forming the tunnel wall surface 900 by pouring concrete.

Embodiment 2 (Detailed description will be made based on the accompanying drawings, FIGS. 1 to 2B and 4).

Embodiment 2 of the present invention is to accurately measure the proper position along the tunnel construction plan before press-fitting the steel pipe 10, and as shown in Fig. 1, the earth prevention plate inlet 21 is formed at the tip of the steel pipe 10 and the press-fit direction adjustment Steel pipe press position measurement and lead pipe installation process to combine the leading pipe 20, the device 30 is formed to complete the preparation work for the steel pipe 10 indentation;

Position the steel pipe 10 precisely in the propulsion position and press-in step by step using a hydraulic jack and a propulsion auxiliary pipe, perform a position measurement every 1M, and a press-fit direction adjusting device 30 formed in the lead pipe 20. Steel pipe press process to be constructed in the minimum error range using;

2a to 2b, when the steel pipe 10 is pressed in the steel pipe pressurization process, the earth is prevented by digging the surrounding soil through the earth prevention plate inlet 21 formed in the lead pipe 20, and then the earth prevention plate 40 in sequence. An earth prevention plate installation process for inputting and connecting;

When the installation of the steel pipe 10 press-fit and the earth prevention plate 40 is completed, the grouting unit may be grouted by grouting material around the earth prevention plate 40 through a grouting injection valve (not shown) installed in the steel pipe 10. An out-of-gang grouting process to prevent leakage of soil during excavation of the lower portion of the steel pipe 10 by forming 70) and of course to act as a degree;

When the out-of-gang grouting and indentation of the steel pipe 10 is completed, the side surfaces of the steel pipes 10 are cut at predetermined intervals as shown in (a) of FIG. 4 to form a stress reinsertion hole 12 and a steel pipe to the stress reinsertion hole. A stress re-installing process for installing the connection pipe 16 or reinforcing bars and a stress bar 300 made of a round bar beam (not shown) so as not to be separated;

When the stress re-installation process is completed, as shown in Figure 4 (b) is cut to a predetermined size in the steel pipe 10 inside the position between the stress re-insertion holes 12 to form a girder mounting hole 600, the girder installation A girder installation process for welding the girder 700 through the girder installation hole 600 formed in the other steel pipe 10 adjacent thereto by digging soil through the ball 600,

After the girder installation process, as shown in Fig. 4 (c), the steel pipes (10) are partially left to withstand the earth pressure, leaving a long incision in a rectangular shape and cut the waterproof steel plate 120 from the cut cutting surface (10) and the other side of the steel pipe (10) by welding and then cut the other side of the steel pipe 10 in the same way to cut the welded steel pipe (10) and the steel pipe (10) all by welding steel plate 120 to complete Steel pipe connection welding process to be waterproof;

After all the steel pipes 10 are connected to the waterproof steel plate 120, reinforcing bar or stress material is installed in the steel pipe 10 and the girder 700, and the concrete is injected and cured as shown in FIG. Concrete casting process in steel pipe;

Tunnel surface excavation process for excavating the tunnel portion 500 outside the steel pipe 10, as shown in Figures 2a and 2b when all of the concrete 400 injected into the steel pipe 10;

The tunnel bottom surface 800 is formed below the excavated tunnel portion 500, and shotcrete or fuming material is poured or corrosion into the tunnel portion 500 to prevent corrosion and aesthetics of the steel pipe 10 and the waterproof steel plate 120. After installing the formwork (not shown) is made, including the finishing process of forming the tunnel wall surface 900 by pouring concrete.

Embodiment 3 ((Detailed description will be made based on the attached drawings. FIGS. 1 to 2B and 5.)

Embodiment 3 of the present invention is to accurately measure the proper position along the tunnel construction site before the steel pipe 10 press-fitting, and the earth prevention plate inlet 21 is formed at the tip of the steel pipe 10, as shown in Figure 1 and the press-fit direction adjustment Steel pipe press position measurement and lead pipe installation process to combine the leading pipe 20, the device 30 is formed to complete the preparation work for the steel pipe 10 indentation;

Position the steel pipe 10 precisely in the propulsion position and press-in step by step using a hydraulic jack and a propulsion auxiliary pipe, perform a position measurement every 1M, and a press-fit direction adjusting device 30 formed in the lead pipe 20. Steel pipe press process to be constructed in the minimum error range using;

2A and 2B, when the steel pipe 10 is press-fitted in the steel pipe indentation process, the earth is prevented by digging out the surrounding soil through the earth prevention plate inlet 21 formed in the lead pipe 20, and then sequentially preventing the earth prevention plate 40. An earth prevention plate installation process for inputting and connecting;

When the installation of the steel pipe 10 press-fit and the earth prevention plate 40 is completed, the grouting unit may be grouted by grouting material around the earth prevention plate 40 through a grouting injection valve (not shown) installed in the steel pipe 10. An out-of-gang grouting process to prevent leakage of soil during excavation of the lower portion of the steel pipe 10 by forming 70) and of course to act as the order;

When the out-of-gang grouting 70 and the steel pipe 10 are press-fitted, as shown in (a) of FIG. 5, the side surfaces of the steel pipes 10 are cut at predetermined intervals to form a stress reinsertion hole 12, and the stress material A stress re-installation process for installing the steel pipe connection pipe 16 or the reinforcing bar and a stress bar 300 made of a round bar beam (not shown) so as not to be separated;

When the stress re-installation process is completed, as shown in Figure 5 (b) is cut to a predetermined size inside the steel pipe 10 to be positioned between the stress re-insertion hole 12 to form a girder mounting hole 600, the girder installation A girder installation process of digging soil through the ball 600 and connecting the girder 700 through a girder installation hole 600 formed in the other steel pipe 10 adjacent thereto;

When the girder installation process is completed, install the reinforcement or stress material in the steel pipe and the girder 700, and then the concrete pouring process in the steel pipe to inject and cure the concrete 400 as shown in Figure 5 (c);

Tunnel surface excavation process for excavating the tunnel portion 500 on the outside of the steel pipe 10 as shown in Figure 5 (d) when all the concrete 400 injected into the steel pipe 10;

When the tunnel part 500 is excavated, the steel pipe 10 is connected to the steel pipes 10 in the tunnel part 500 by welding to the waterproof steel plate 120 so as to be completely waterproof;

2A and 2B, the tunnel bottom surface 800 is formed under the excavated tunnel portion 500, and shotcrete or foaming material is poured to prevent corrosion and aesthetics of the steel pipe 10 and the waterproof steel plate 120. Or a formwork (not shown) inside the tunnel 500, and then finishing the concrete to form a tunnel wall surface 900 to finish.

Here, in the first, second, and third embodiments of the present invention, the waterproof steel plate 120 used in the steel pipe connection process of welding the steel pipes 10 to the waterproof steel plate 120 is welded to a plurality of upper and lower layers. It makes the waterproof even more perfect.

In the embodiments 1, 2, and 3 of the present invention, the waterproof steel plate 120 used in the steel pipe connection process of welding all the steel pipes 10 to the waterproof steel plate 120 is as shown in FIG. If the welding interval between the steel pipes 10 is not constant by forming the bent portion 121 at both ends, the bent portion 121 may be extended or folded to adjust the width of the welding interval so that the welding can be performed. Welding of the iron plate 120 is even more convenient.

The present invention as described above, the first to install a tunnel-forming structure in the ground without having to excavate the soil of the tunnel excavation in advance to sufficiently withstand the stress in advance and then to excavate the inner structure to form an underground tunnel Patent registration

No. 217845 and Utility Model Registration No. 274812 and Patent Application No. 2004-10300

To improve the technical content,

As a result, the underground tunnel structure can be installed more conveniently and quickly, and the construction is accurate and economical.In addition, after the installation and after the installation, the structure is very structurally strong so that tunneling work can be stable. It is the basic to completely eliminate the risk of work so that the tunnel can be formed with confidence.

It is used as it is without cutting the inner surface of the steel pipe protruding into the tunnel portion, as well as forming a girder installation hole on the side of the steel pipe and install the girder further structurally more robust, robust and waterproof even tunneling structure Of course I can construct a structure in a short time,

After the tunnel excavation, shotcrete or fuming material is placed on the steel pipe and waterproof steel plate exposed to the inside of the excavation part, or the formwork is installed inside the tunnel part, and concrete is finished to finish the tunnel wall to prevent corrosion of the steel pipe and the waterproof steel plate. It is a very innovative invention in which various effects such as beauty and beauty are created.

Claims (10)

Positioning of the tunnel construction preplanned surface before press-fitting of the steel pipe (10) and injecting the steel pipe (10) by combining the leading pipe (20) formed with a flow prevention plate inlet (21) and a press-fitting direction adjusting device (30) at the tip of the steel pipe (10). Steel pipe press position measurement and leading pipe installation process to complete the preparation work for; Press the steel pipe 10 step by step using a hydraulic jack (JACK) and the propulsion auxiliary pipe and performs a position measurement every 1M, using a press-fit direction adjusting device 30 formed in the leading pipe 20 to the minimum error range Steel pipe press process to be constructed in; When the steel pipe 10 is pressed in the steel pipe press-in process, the earth prevention plate is installed by digging the surrounding soil through the earth prevention plate inlet 21 formed in the leading pipe 20, and then connecting the earth prevention plate 40 sequentially. Process; When the installation of the steel pipe 10 press-fit and the earth prevention plate 40 is completed, the grouting unit may be grouted by grouting material around the earth prevention plate 40 through a grouting injection valve (not shown) installed in the steel pipe 10. An out-of-gang grouting process for forming 70); When the out-of-gang grouting 70 and the steel pipe 10 pressurization is completed, the sides of the steel pipes 10 are cut to form a stress reinsertion hole 12, and a steel pipe connection pipe 16 to the stress reinsertion hole 12. B stress re-installation step of connecting and installing so as not to be separated by inserting the stress material 300 made of reinforcing bar, round bar, beam (not shown); When the stress re-installation process is completed, a girder installation hole 600 is formed between the stress re-insertion holes 12 and the soil is excavated through the girder installation hole 600 to secure the out-of-gang work space 610. , The girder 700 is connected to the girder installation hole 600 formed in one steel pipe 10 and the girder installation hole 600 formed in the other steel pipe 10 adjacent thereto, and the out-of-gang work space 610. A steel pipe connection welding process for welding the steel pipes 10 to each other by a waterproof steel plate 120; After the waterproof steel plate 120 is connected to the steel pipe 10 and the reinforcement or reinforcement in the girder 700 is installed in the steel pipe concrete pouring process for curing by injecting concrete; Tunnel surface excavation process for excavating the tunnel portion 500 outside the steel pipe 10 after curing the concrete 400 injected into the steel pipe 10; A tunnel bottom surface 800 is formed below the excavated tunnel portion 500, and shotcrete or fuming material is poured into the steel pipe 10 and the waterproof steel plate 120, or formwork (not shown) is formed inside the tunnel portion 500. The installation method of underground tunnel formation, characterized in that it is made, including the finishing process of forming a tunnel wall surface 900 by pouring concrete. Positioning of the tunnel construction preplanned surface before press-fitting of the steel pipe (10) and injecting the steel pipe (10) by combining the leading pipe (20) formed with a flow prevention plate inlet (21) and a press-fitting direction adjusting device (30) at the tip of the steel pipe (10). Steel pipe press position measurement and leading pipe installation process to complete the preparation work for; Press the steel pipe 10 step by step using a hydraulic jack (JACK) and the propulsion auxiliary pipe and performs a position measurement every 1M, using a press-fit direction adjusting device 30 formed in the leading pipe 20 to the minimum error range Steel pipe press process to be constructed in; When the steel pipe 10 is pressed in the steel pipe press-in process, the earth prevention plate is installed by digging the surrounding soil through the earth prevention plate inlet 21 formed in the leading pipe 20, and then connecting the earth prevention plate 40 sequentially. Process; When the installation of the steel pipe 10 press-fit and the earth prevention plate 40 is completed, the grouting unit may be grouted by grouting material around the earth prevention plate 40 through a grouting injection valve (not shown) installed in the steel pipe 10. An out-of-gang grouting process for forming 70); When the out-of-gang grouting and steel pipe 10 pressurization is completed, the sides of the steel pipes 10 are cut to form a stress reinsertion hole 12, and the steel pipe connection pipe 16 or reinforcing bar, round bar in the stress reinsertion hole 12. A stress re-installation process of connecting and installing the stress material 300 as a beam (not shown) so as not to be separated; When the stress re-installation process is completed, a girder installation hole 600 is formed to be positioned between the stress re-insertion holes 12, and the girder formed in the other steel pipe 10 adjacent thereto by digging soil through the girder installation hole 600. A girder installation process of welding the girder 700 through the installation hole 600; When the girder installation process is finished, the steel pipe 10 and the other steel pipe 10 cut off the waterproof steel plate 120 in a long cut in a rectangular shape and partially cut to leave the sides of the steel pipes 10 to withstand earth pressure. Welded to the steel pipe connection welding process of welding the steel pipe 10 and the steel pipes 10 to the waterproof steel plate 120 in a cut surface cut by cutting the other steel pipe 10 in the same manner; After the waterproof steel plate 120 is connected to the steel pipe 10 and the reinforcement or reinforcement in the girder 700 is installed in the steel pipe concrete pouring process for curing by injecting concrete; Tunnel surface excavation process for excavating the tunnel portion 500 outside the steel pipe 10 after curing the concrete 400 injected into the steel pipe 10; A tunnel bottom surface 800 is formed below the excavated tunnel portion 500, and shotcrete or fuming material is poured into the steel pipe 10 and the waterproof steel plate 120, or formwork (not shown) is formed inside the tunnel portion 500. The installation method of underground tunnel formation, characterized in that it is made, including the finishing process of forming a tunnel wall surface 900 by pouring concrete. Positioning of the tunnel construction preplanned surface before press-fitting the steel pipe (10) and pressing the steel pipe (10) by combining the leading pipe (20) formed with a flow prevention plate inlet (21) and a press-fit direction adjusting device (30) at the tip of the steel pipe (10). Steel pipe press position measurement and leading pipe installation process to complete the preparation work for; Press the steel pipe 10 step by step using a hydraulic jack (JACK) and the propulsion auxiliary pipe and performs a position measurement every 1M, using a press-fit direction adjusting device 30 formed in the leading pipe 20 to the minimum error range Steel pipe press process to be constructed in; When the steel pipe 10 is pressed in the steel pipe press-in process, the earth prevention plate is installed by digging the surrounding soil through the earth prevention plate inlet 21 formed in the leading pipe 20, and then connecting the earth prevention plate 40 sequentially. Process; When the installation of the steel pipe 10 press-fit and the earth prevention plate 40 is completed, the grouting unit may be grouted by grouting material around the earth prevention plate 40 through a grouting injection valve (not shown) installed in the steel pipe 10. An out-of-gang grouting process for forming 70); When the out-of-gang grouting 70 and the steel pipe 10 pressurization is completed, the sides of the steel pipes 10 are cut to form a stress reinsertion hole 12, and a steel pipe connection pipe 16 to the stress reinsertion hole 12. B stress re-installation step of connecting and installing so as not to be separated by inserting the stress material 300 made of reinforcing bar, round bar, beam (not shown); When the stress re-installation process is completed, a girder installation hole 600 is formed to be positioned between the stress re-insertion holes 12, and the girder formed in the other steel pipe 10 adjacent thereto by digging soil through the girder installation hole 600. A girder installation process of welding the girder 700 through the installation hole 600; When the girder installation process is completed, the steel pipe and girder 700 is installed in the reinforcement or stress material in the steel pipe concrete pouring step of curing by injecting concrete (400); Tunnel surface excavation process for excavating the tunnel portion 500 outside the steel pipe 10 after curing the concrete 400 injected into the steel pipe 10; When the tunnel portion 500 is excavated, the steel pipe 10 connection process of welding all the steel pipes 10 from the tunnel portion 500 to the waterproof steel plate 120; A tunnel bottom surface 800 is formed below the excavated tunnel portion 500, and shotcrete or fuming material is poured into the steel pipe 10 and the waterproof steel plate 120, or formwork (not shown) is formed inside the tunnel portion 500. The installation method of underground tunnel formation, characterized in that it is made, including the finishing process of forming a tunnel wall surface 900 by pouring concrete. The method according to any one of claims 1 to 3, Installation of a structure for forming an underground tunnel, characterized in that the waterproof steel plate 120 is made by welding the waterproof steel plate 120 to the upper and lower plural layers during the steel pipe connection process for welding all of the steel pipes 10 to each other. Way. The method according to any one of claims 1 to 3, Waterproof steel plate 120 used in the steel pipe connection process for welding all of the steel pipes 10, By forming the bent part 121 at both ends, if the welding interval between the steel pipes 10 is not constant, the bent part 121 is expanded or folded to adjust the width of the welding gap so as to correspond to this, and then the welding connection is made. Underground tunnel formation structure installation method characterized in that it comprises a. The large diameter steel pipe 10 having a large diameter is forcibly pressed into the tunnel construction site, and the earth is prevented by digging soil between the steel pipes 10 and then sequentially connecting and grouting the grouting part 70. Form the The sidewalls of the steel pipes 10 are cut to form a stress reinsertion hole 12, and a stress material made of a steel pipe connection pipe 16, reinforcing bars, round bars, and a beam (not shown) in the stress reinsertion hole ( Insert 300), Forming a girder installation hole 600 to position between the stress re-insertion hole 12, to excavate the soil through the girder installation hole 600 to secure the out-of-gang work space 610 in one steel pipe (10) The girder 700 is connected to and installed through the girder installation hole 600 and the girder installation hole 600 formed in the other steel pipe 10 adjacent thereto, but the steel pipes 10 are waterproofed with each other in the out-of-gang work space 610. 120) and weld them all together. After installing reinforcement or stress material in the steel pipe 10 and the girder 700 and injecting concrete to cure, and then excavating the tunnel 500 inside the steel pipe 10, Tunnel wall surface is formed by forming the tunnel bottom surface 800 and placing shotcrete or fuming material on the steel pipe 10 and the waterproof steel plate 120 or by installing a formwork (not shown) inside the tunnel part 500. Underground tunnel forming structure structure, characterized in that formed by forming (900). The large diameter steel pipe 10 having a large diameter is forcibly pressed into the tunnel construction site, and the earth is prevented by digging soil between the steel pipes 10 and then sequentially connecting and grouting the grouting part 70. Form the The sidewalls of the steel pipes 10 are cut to form a stress reinsertion hole 12, and a stress material made of a steel pipe connection pipe 16, reinforcing bars, round bars, and a beam (not shown) in the stress reinsertion hole ( Insert 300), Forming the girder installation hole 600 to position between the stress re-insertion hole 12 and through the girder installation hole 600 formed in the other steel pipe 10 adjacent to this by digging soil through the girder installation hole 600 Connect and install the girder 700, The side of the steel pipes 10 is cut in the form of a long and the steel plate 10 is connected to the other side of the steel pipe 10 by welding the waterproof steel plate 120 and the other side of the steel pipe (10) in the same way After the incision to cut all the welded connection to the waterproof steel plate 120, After installing reinforcement or stress material in the steel pipe 10 and the girder 700 and curing the concrete by injecting concrete, and then excavating the tunnel 500 outside the steel pipe 10, Tunnel wall surface is formed by forming the tunnel bottom surface 800 and placing shotcrete or fuming material on the steel pipe 10 and the waterproof steel plate 120 or by installing a formwork (not shown) inside the tunnel part 500. Underground tunnel forming structure structure, characterized in that formed by forming (900). The large diameter steel pipe 10 having a large diameter is forcibly pressed into the tunnel construction site, and the earth is prevented by digging soil between the steel pipes 10 and then sequentially connecting and grouting the grouting part 70. Form the The sidewalls of the steel pipes 10 are cut to form a stress reinsertion hole 12, and a stress material made of a steel pipe connection pipe 16, reinforcing bars, round bars, and a beam (not shown) in the stress reinsertion hole ( Insert 300), Forming the girder installation hole 600 to position between the stress re-insertion hole 12, and excavated soil through the girder installation hole 600 to form a girder installation hole 600 formed in the other steel pipe (10) adjacent thereto After welding the girder 700 through, After installing reinforcement or stress material in the steel pipe 10 and the girder 700 and curing the concrete by injecting the concrete, and then excavating the tunnel 500 outside the steel pipe, In the tunnel 500, the steel pipes 10 are welded to each other by a waterproof steel plate 120, Tunnel wall surface is formed by forming the tunnel bottom surface 800 and placing shotcrete or fuming material on the steel pipe 10 and the waterproof steel plate 120 or by installing a formwork (not shown) inside the tunnel part 500. Underground tunnel forming structure structure, characterized in that formed by forming (900). The method according to any one of claims 6 to 8, The girder 700 and the steel pipe (10) welded to each other, the waterproof steel plate 120 is a structure for forming an underground tunnel, characterized in that it further comprises a plurality of upper and lower layers. The method according to any one of claims 6 to 8, The girder 700 and the steel plate 10 is used to weld all of the steel pipes 10 to each other, Structure structure for underground tunnel formation, characterized in that it further comprises being formed integrally with the bent portion 121 on both side ends.

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