KR20050081975A - Construction establishment method and the structure for underground tunnel formation - Google Patents

Abstract

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 to further improve the technical content of the underground tunnel formation structure installation method and the structure that can be constructed in a short time to build a strong, robust and waterproof even tunnel construction structure About

As it is impossible to install between steel pipes and steel pipes as in the past, it is easy to install and material cost is prevented by installing wooden earth prevention plate through the earth prevention plate inlet formed in the leading pipe without injecting the small diameter pipe which is uneconomical. It is inexpensive, and it is easy to install and has excellent straightness because it can be progressed while removing amber stones and other obstacles quickly by installing in the leading pipe.

Insert a steel pipe connecting pipe or a stress material made of various beams into the stress reinsertion hole, and then weld the steel pipe and the stress material with a steel plate that is padded on the inner surface of the steel pipe to connect the steel pipes to each other so that the connection state is very solid. By integrally protruding flanges or steel bars at both ends of the stressor, it is possible to form a structurally safe structure because the stressor does not escape from the steel pipe.

Through the stress reinsertion hole for installing the stress material connecting the steel pipe and the steel pipe, the waterproof steel plate can be welded and installed on the upper side in various ways to completely prevent water from penetrating into the tunnel.

In the case of Example 1, the empty space caused by the soil dug out through the stress reinsertion hole to weld the waterproof steel sheet is filled with grout material or concrete injected through the corrosion preventing grout inlet formed on the inner surface of the steel pipe. As the surroundings are solidified and the steel pipe, the stress material, and the waterproof steel plate are wrapped, it is structurally very strong, and the steel pipe, the stress material, and the waterproof steel plate are not corroded, thereby extending the life and making the structure more stable.

In the case of Example 2, as well as to minimize the amount of the stress material installed in the stress re-insertion hole,

By digging the bottom soil between the steel pipe and the steel pipe to a predetermined depth through the installation space of the stress re-insertion hole, and first filling the space with concrete or grout material,

In order to make the tunnel wall surface finishing materials such as shotcrete or spraying paint and concrete used to form the tunnel wall surface to be consumed as little as the volume of the prefilled space,

As a result, the present invention can install the underground tunnel structure more conveniently and quickly, the construction is accurate, and economically, and the structure is very solid structurally after installation as well as after the installation can be stable tunneling work As a result, it is possible to form a tunnel with confidence by completely eliminating work risks, and to construct an economical and robust tunnel by using less manpower, equipment and materials.

Description

Construction method and the structure for underground tunnel formation

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 to further improve the technical content of the underground tunnel formation structure installation method and the structure that can be constructed in a short time to build a strong, robust and waterproof even tunnel construction structure It is about.

In general, in order to form a tunnel, a tunnel structure is installed so as to withstand the stress generated from the outside of the tunnel. Hereinafter, an embodiment of a conventional tunnel structure installation method for installing such a tunnel structure will be described. .

First, as shown in FIG. 1, a large diameter steel pipe 10 is press-fitted into a tunnel-like shape at a predetermined interval in the ground to grout the inside of the steel pipe 10 and the outer surface of the steel pipe 10, and then the inner tunnel surface of the steel pipe 10. Excavation to a certain depth and then install the support ball (1) by connecting a plurality of support ball (1) with a plurality of bolts throughout the inside of the structure and then poured the concrete (400) to the inside to complete the construction work Repeatedly repeated several times, the underground tunnel formation structure was installed, and the conventional method according to one embodiment as well as the other tunnel structure installation methods are almost all common tunnel drilling in advance to a certain depth in advance How to complete the process and repeat the process of installing underground tunnel structures,

First of all, there was a hassle of having to construct a temporary facility every time because the construction of a temporary facility should be carried out before the tunnel excavation, and there was a problem of a safety accident.

Secondly, in order to proceed with the temporary construction, first, after the tunnel excavation, several jibo (1) should be connected by installing a plurality of bolts, which is also very demanding and difficult, requiring a lot of manpower and a long process, which is uneconomical. There was a problem that the construction work was very slow due to the work of the temporary facility.

Thirdly, if the excavation is too deep during the preceding excavation work, if the ground is weak, it is very likely that the ground or rock will collapse or fall during the excavation construction as well as during the temporary construction work. Since the excavation was to be preceded only by the operation, there was a problem that the work was not related.

As a result, according to the conventional tunnel structure installation method as described above, after installing the temporary construction work after the tunnel excavation work in advance, the installed temporary facilities interfere with the air, which is long, dangerous, and at the minimum unit when installing the tunnel structure. As it is a repetitive method, it requires a lot of manpower, equipment and materials, which makes the work inefficient and inexpensive, and because of the weakness of the endurance of the tunnel structure, it was not always able to escape from the risk of tunnel collapse and safety accidents. .

Therefore, there is no risk of work by excluding the defects in tunnel excavation by the above methods, and only underground excavation work can be done at a time without excavating the ground so that work can be performed efficiently and consistently. A method for installing a structure for forming a tunnel was devised. As shown in FIG. 2, a large diameter steel pipe of 1.5 m to 2 m was press-fitted into the ground along the tunnel construction plan, and then the steel pipe 10 and the steel pipe 10 were inserted. The small diameter pipe 2 is installed horizontally in parallel with the steel pipe 10, and the upper part of the both steel pipes 10 is wrapped with the same cement, silicic acid, and polyurethane, or wrapped with a freezing method to collapse the soil. After forming the preventive grouting portion 50, by cutting the curved portion of the predetermined length of the sides of the steel pipes 10 to form a mutually open incision and the upper and lower ends of the incision cut off the iron plate ( 3) After the welding connection to the rape (strut) (4) to be installed to support, by filling the lower side of the steel pipe with styropol to install the structure for underground tunnel formation by placing concrete in the remaining space. .

However, in such a method, first, all the small-diameter pipes (2) having long lengths must be forcedly installed between the steel pipes (10) and the steel pipes (10). Lack of directionality and straightness makes it difficult to install, and if the width between the steel pipe 10 and the steel pipe 10 becomes wider, small diameter pipes 2 are not possible to prevent earth and sand and material costs are required. If the direction is different, the straightness is uncertain, and when the amber or more rocks are scattered, the construction is very difficult, and when it is not combined with the filling method inside the steel pipe, it becomes vulnerable to corrosion and prevents groundwater and earth loss. Is difficult and uneconomical to fill the pipe interior.

Secondly, when cutting the curved portion of a predetermined length of the side of the steel pipes (10) to form a mutually open incision, there is a fear of collapse by the earthquake pressure, and the upper and lower ends of the incision cut the iron plate ( 3) After the welding connection, the rape column (strut) (4) should be installed. At this time, the earth pressure is transferred to the lower steel plate, so the work is complicated by installing the reinforcement plate separately. It was uneconomical and weak in external stress, structurally unstable in the absence of necessary measures.

Third, in the work of filling the styropole (5) for the formwork in the lower side of the steel pipe (10), the material cost is excessive, when the construction volume is small, it is difficult to purchase the styropol (5) to match the steel pipe (10) (5) must be processed or made to order, and if the dimensions of the steel pipe (10) is different, it was inconvenient because you have to repurchase Schiropol (5) according to the dimensions.

After the completion of the construction, the waste of Styropol 5 polluted the environment and was difficult to dispose of.

Fourth, the steel pipe 10 inside is made of plain concrete, which is weak in external stress, difficult to interpret structurally, and requires additional reinforcement methods.

In consideration of such a problem, there is a utility model registration No. 274812, which has been drafted and registered by the person. Using a method for installing underground tunnel formation structures to form underground tunnels by excavating

I installed the formwork in the steel pipe and placed the concrete in the steel pipe where the formwork was installed first to install concrete, so that the structure is very solid structurally even after the installation. By providing an improved construction method, it is possible to form a tunnel with confidence by completely eliminating work risks, and to recycle economically, eco-friendly, and durable tunnels with less manpower, equipment and materials. .

The present invention does not excavate the soil excavation of the tunnel excavation portion in advance, such as patent application No. 2002-36953 and Utility Model Registration No. 274812, which is the original application of the present invention as described above. Using the installation method of the underground tunnel forming structure to endure and excavate the inside of the structure to form an underground tunnel,

Of course, the inner surface of the steel pipe protruding into the tunnel portion is used as it is without cutting, so that a strong structure can be obtained.

By varying the installation method of stress materials, it is possible to form structurally safe structures while minimizing the installation of stress materials.

In addition, through the stress re-insertion hole for installing the stress material connecting the steel pipe and the steel pipe, it is possible to weld the waterproof steel plate in various ways on the upper side to completely prevent water from penetrating into the tunnel.

The grout material or concrete is placed in the space created by the soil excavated through the stress reinsertion hole to fix the surroundings and to prevent corrosion of waterproof steel plates.

By digging the bottom soil between the steel pipe and the steel pipe to a predetermined depth through the installation space of the stress re-insertion hole, and first filling the space with concrete or grout material,

A special underground method to construct a strong, solid and waterproof tunnel construction structure that minimizes the use of the shotcrete used to form the tunnel wall, or the use of tunnel wall forming finishes such as spray paint and concrete. The purpose of the present invention is to provide a method for installing a tunnel forming structure so that a structure for forming an underground tunnel can be obtained in a short time.

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

Example 1

Embodiment 1 of the present invention will be described in detail with reference to Figs.

(Steel pipe press position measurement and lead pipe installation process)

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. Combine and complete the preparation work for the press-fitting of the steel pipe (10).

(Steel Pipe Intrusion Process)

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. It should be installed in the minimum error range using.

(Earth prevention plate installation process)

When the steel pipe 10 is press-fitted in the steel pipe pressurizing process, the earth is prevented by digging up the surrounding soil through the earth prevention plate inlet 21 formed in the lead pipe 20, and then stably connecting the earth prevention plate 40.

 (Outdoor grouting process)

When the installation of the pressurization and the earth prevention plate 40 of the steel pipe 10 is completed, the grout part is formed by grouting the grout material around the earth prevention plate 40 through a grouting injection valve on the steel pipe 10 to form a grouting part 70. (10) To prevent earth leakage during bottom excavation, as well as to serve as the order.

(Stress re-installation process)

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 thus, between the steel pipe 10 and the steel pipe 10. After digging soil, the steel pipe 10 and the steel pipe 10 of any one of the upper side or the lower side or between the stress reinsertion hole 12 through this space 210 by welding to the waterproof steel plate 120 After the waterproofing is inserted, a stress pipe 300 made of steel pipe connecting pipe 16, rebar, round bar, beam (not shown), etc. is inserted into the stress reinsertion hole 12, and the steel pipe 10 and the stress are inserted. By welding the ash 300 to connect the steel pipes 10 to each other and at the same time protruding integrally formed flange 16a or the steel bar (16b) on both sides of the stress material 300, the stress material 300 is a steel pipe ( 10) to prevent deviation from

Corrosion Prevention Process

The grout injection hole 200 for preventing corrosion is installed on the inner surface of the steel pipe 10 so as to be positioned above the stress material 300 or between the stress material 300 and the stress material 300, and the grout material and the grout material through the grout injection hole 200. Injecting concrete to fill the empty space 210 so as to solidify the surroundings and at the same time the grout material and the concrete material is wrapped in the steel pipe 10 and the steel pipe connection stress member 300 and the waterproof steel plate 120 to prevent corrosion Do not

(Concrete casting process in steel pipe)

When the corrosion prevention process is completed, the concrete 400 is injected into the entire steel pipe 10 to cure.

(Tunnel surface excavation process)

When all the concrete 400 injected into the entire steel pipe 10 is cured, the tunnel 500 inside the steel pipe 10 is excavated.

(Finishing process)

When the tunnel excavation process is completed, the tunnel bottom is formed, and shotcrete or sprayed paint is installed or the formwork 600 is installed inside the tunnel part 500 to prevent corrosion and aesthetics of the steel pipe 10 and the waterproof steel plate 120. Next, the concrete is poured to form the tunnel wall 700 beautifully.

Example 2

Embodiment 2 of the present invention will be described in detail with reference to Figs.

(Steel pipe press position measurement and lead pipe installation process)

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. Combine and complete the preparation work for the press-fitting of the steel pipe (10).

(Steel Pipe Intrusion Process)

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. It should be installed in the minimum error range using.

(Earth prevention plate installation process)

When the steel pipe 10 is press-fitted in the steel pipe pressurizing process, the earth is prevented by digging up the surrounding soil through the earth prevention plate inlet 21 formed in the lead pipe 20, and then stably connecting the earth prevention plate 40.

(Outdoor grouting process)

The grouting part 70 is formed by grouting with the grout material around the earth pressure preventing plate 40 through a grouting injection valve formed in the steel pipe 10 when the installation of the steel pipe 10 and the earth pressure preventing plate 40 are completed. By doing so to prevent the soil outflow when excavating the lower portion of the steel pipe (10) as well as to serve as a degree.

(Stress re-installation process)

When the out-of-gang grouting 70 and the steel pipe 10 are press-fitted, the steel pipes 10 are alternately symmetrically cut side by side of the steel pipes alternately with each other to secure space and form a stress reinsertion hole 12 to form a steel pipe connection pipe. (16) or by installing a stress member 300 made of reinforcing rods, round bars, and beams (not shown), and then connecting both the steel pipe 10 and the steel pipe 10 to the waterproof steel plate 120 at the cut surface. By welding, by attaching the reinforcing plate 125 to the bottom of the waterproof steel plate 120 to bear the stress to minimize the installation of the stress material 300 and to the flange 16a or the steel bar (both ends of the stress material 300) ( 16b) integrally protruded to prevent the stress material 300 from leaving the steel pipe (10).

Here, the installation order of the waterproof steel plate 120 and the stress material 300 may be changed.

(Memory process)

Digging the lower soil between the steel pipe 10 and the steel pipe 10 to a predetermined depth through the installation space of the stress reinsertion hole 12 and first fill the space 220 with concrete or grout material.

This minimizes the consumption of the finish for forming tunnel walls.

(Concrete casting process in steel pipe)

When the lower out-of-gang filling process between the steel pipe 10 and the steel pipe 10 is completed, the concrete 400 is injected into the entire steel pipe 10 to cure.

(Tunnel surface excavation process)

When all the concrete 400 injected into the entire steel pipe 10 is cured, the tunnel 500 inside the steel pipe 10 is excavated.

(Finishing process)

 After the tunnel excavation process is completed, the tunnel bottom surface is formed, and shotcrete or sprinkled steel is poured in order to prevent corrosion and aesthetics of the steel pipe 10, or formwork 600 is installed inside the tunnel part 500. Make the wall 700 beautiful.

As described above, the present invention uses the steel pipe 10 and the lower side of the steel pipe 10 without cutting, as well as the steel pipe connection pipe 16 or various beams (not shown) in the stress reinsertion hole 12. Insert the stress material 300 into the steel pipe 10 and then weld the steel pipe 10 and the stress material 300 with the steel plate 100 padded on the inner surface of the steel pipe 10 to connect the steel pipes 10 to each other. It can be very solid, so it is structurally very strong and stable.

At this time, the steel sheet 100 can be used in various forms such as round or square, in particular, since the steel sheet 100 is relatively heavy, as in Example 2, one side is first cut by cutting the rectangular steel sheet 100 in a "c" shape. Welding can be installed in various ways, such as welding the other side.

In addition, the steel plate 10 and the steel plate 10 through the stress reinsertion hole 12 for installing the stress material 300 connecting the steel pipe 10 can be installed in various ways on the upper side.

On the other hand, according to the present invention, the flange 16a or the steel bar 16b are integrally formed on both side ends of the stress material 300 so that the stress material 300 is not separated from the steel pipe 10. Can be formed,

In the case of Example 1, the corrosion preventing grout injection hole 200 is installed on the inner surface of the steel pipe 10 so as to be positioned above the stress material 300 connecting the steel pipe 10 or between the stress material 300 and the stress material 300. And by injecting grout material or concrete through this, so as to fill the empty space 210 caused by the soil dug out to the outside through the stress re-insert hole 12 in order to weld and install the waterproof steel plate 120, the stiffness around Simultaneously, the steel pipe 10 and the stress member 200 and the waterproof steel plate 120 may be wrapped in grout material or concrete to prevent corrosion in advance.

In this way, since the empty space 210 is filled with solidified grout material or concrete, it is structurally very strong, and since the steel pipe 10 and the stress material 300 and the waterproof steel plate 120 are not corroded, their service life is extended and structurally. Even more stable.

Here, the corrosion preventing grout injection hole 200, even if installed only on the stress material 300 can not only fully cover the steel pipe 10 and the stress material 300, but also can fill the empty space 210, corrosion Even if the prevention grout injection hole 200 is installed between the stress member 300 and the stress member 300, the same effect can be obtained, and therefore, may be selected and used freely.

On the other hand, the present invention is a steel pipe connection pipe 16 or reinforcing rods, round bar, beam (not shown) in the stress reinsertion hole 12 formed so as to secure space by cutting in the stress re-installation process of Example 2 After installing the stress material 300 made of a welded to be waterproof by connecting both the steel pipe (10) and the steel pipe (10) with a waterproof steel plate 120 in the cut surface, the reinforcement plate 125 under the waterproof steel plate (120) Since the stress is applied by attaching the stress it can minimize the installation of the stress material (300).

In addition, by digging the lower soil between the steel pipe 10 and the steel pipe 10 to a predetermined depth through the installation space of the stress re-insertion hole 12 by filling the space 220 with concrete or grout material first,

After the concrete 400 is injected into the entire steel pipe 10 to cure and excavate the tunnel portion 500 inside the steel pipe 10, shotcrete or spraying and tunnel portion 500 used to form the tunnel wall surface. After installing the formwork 600 inwards, the consumption of the finishing material for tunnel wall formation such as concrete that is poured therein is less than the volume of the pre-filled space, as well as the more robust structure is constructed, so structurally more Durable and safe

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 By further improving the technical contents of Patent Registration No. 217845 and Utility Model Registration No. 274812, the inner surface of the steel pipe protruding into the tunnel part can be used as it is without cutting to obtain a structure structure for tunnel formation that is strong, strong and waterproof. By developing special methods

As it is impossible to install between steel pipes and steel pipes as in the past, it is easy to install and material cost is prevented by installing wooden earth prevention plate through the earth prevention plate inlet formed in the leading pipe without injecting the small diameter pipe which is uneconomical. It is inexpensive, and it is easy to install and has excellent straightness because it can be proceeded while removing amber stones and other obstacles quickly by installing in the leading pipe.

In addition, by inserting a steel pipe connecting pipe or a stress material made of various beams into the stress reinsertion hole, the steel pipe and the stress material are welded by a steel plate that is padded on the inner surface of the steel pipe to connect the steel pipes to each other so that the connection state is very solid. Of course, by integrally protruding a flange or a steel bar at both ends of the stress material, the stress material does not escape from the steel pipe can form a structurally safe structure.

In addition, through the stress re-insertion hole for installing the stress material connecting the steel pipe and the steel pipe can be welded to the waterproof steel plate in a variety of ways to prevent the penetration of water into the inside of the tunnel.

And, in the case of Example 1, the empty space caused by the soil dug out through the stress re-insertion hole to install the waterproof steel sheet by the grout material or concrete injected through the corrosion preventing grout inlet formed on the inner surface of the steel pipe As it is filled, the surroundings are solidified and the steel pipe, the stress material, and the waterproof steel sheet are wrapped, which makes the structure very strong. The steel pipe, the stress material, and the waterproof steel plate are not corroded, so that the service life is extended and the structure is more stable. There is.

In addition, in the case of Example 2, of course, it is possible to minimize the amount of the stress material installed in the stress reinsertion hole,

By digging the bottom soil between the steel pipe and the steel pipe to a predetermined depth through the installation space of the stress re-insertion hole, and first filling the space with concrete or grout material,

Shotcrete used for forming the tunnel wall surface, or the finishing material for forming the tunnel wall surface, such as sprayed concrete and concrete, is consumed as little as the space of the prefilled space.

As a result, the present invention can install the underground tunnel structure more conveniently and quickly, the construction is accurate, and economically, and the structure is very solid structurally after installation as well as after the installation can be stable tunneling work As a result, it is possible to form a tunnel with confidence by completely eliminating work risks, and it is a very innovative invention that can construct an economical and robust tunnel by using less manpower, equipment and materials.

1 is an embodiment of a conventional invention.

Figure 2 is another embodiment of the prior invention.

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

Figure 4 is a state diagram of the construction of the completed tunnel structure according to an embodiment of the present invention.

5A, 5B, 5C, 5D, and 5E are main state diagrams for constructing a tunnel structure according to an embodiment of the present invention.

Figure 5a is a front view showing a state of installation of the waterproof steel sheet.

Figure 5b is a side view showing a state of installation of a waterproof steel sheet.

Figure 5c is a front view showing a state in which the anti-corrosion grout material or concrete material is placed on the upper surface of the waterproofing steel plate through the grouting inlet.

Figure 5d is a side view showing a state in which the anti-corrosive grout material or concrete material is placed on the upper surface of the waterproofing steel plate through the grouting inlet.

Figure 5e is a complete structure installation.

Figure 6 is a state diagram of the construction of the completed tunnel structure according to another embodiment of the present invention.

7A, 7B, 7C, and 7D are main state diagrams for constructing a tunnel structure according to an embodiment of the present invention.

Fig. 7A is a front view showing a state where a waterproof steel plate is installed in a cut surface for forming a stress reinsertion hole;

Figure 7b is a side view showing a state where the waterproof steel plate is installed in the cut surface for forming the stress reinsertion hole.

Figure 7c is a front view showing a state of digging soil between the steel pipe and the steel pipe to a predetermined depth and filled with grout material or concrete.

Figure 7d is a structural installation complete.

♣ Explanation of symbols for the main parts of the drawing

10: Steel pipe 12: Stress reinsertion hole

16: Steel pipe connection pipe 16a: Flange

16b: steel bar 20: lead pipe

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

40: earth prevention plate 70: grouting part

100: steel plate 120: steel plate for waterproofing

125: reinforcement plate 200: grout inlet

210,220: Space 300: Stress material

400: concrete 500: tunnel

600: formwork 700: tunnel wall surface

Claims (4)

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 press-fitted in the steel pipe pressurization process, the earth prevention plate is installed through the earth prevention plate inlet 21 formed in the leading pipe 20 to dig out the soil around the earth prevention plate 40. Process; When the installation of the pressurization and the earth prevention plate 40 of the steel pipe 10 is completed, the grout part is formed by grouting the grout material around the earth prevention plate 40 through a grouting injection valve on the steel pipe 10 to form a grouting part 70. (10) an out-of-gang grouting process for preventing soil leakage during the bottom excavation as well as acting as the order; 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 thus, between the steel pipe 10 and the steel pipe 10. After digging soil, the steel pipe 10 and the steel pipe 10 of any one of the upper side or the lower side or between the stress reinsertion hole 12 through this space 210 by welding to the waterproof steel plate 120 After the waterproofing, insert the stress pipe 300 made of steel pipe connecting pipe 16, reinforcing rod, round bar, beam (not shown) into the stress re-insertion hole 12 and the steel pipe 10 and the stress material Weld (300) to connect the steel pipes (10) to each other and at the same time protruding integrally formed flange (16a) or steel bar (16b) on both side ends of the stress material 300, the stress material 300 is a steel pipe (10) Stress re-installation step to prevent the departure from); The corrosion prevention grout injection hole 200 is installed on the inner surface of the steel pipe 10 so as to be positioned above the stress material 300 or between the stress material 300 and the stress material 300, and the grout material or concrete through the grout injection hole 200. Corrosion-prevention process to ensure that the empty space 210 is filled by filling the circumference and to wrap around the steel pipe 10 and the steel pipe connection stress material 300 and waterproof steel plate 120 to prevent corrosion ; When the corrosion prevention process is completed in the steel pipe concrete pouring step of curing by injecting concrete (400) to the entire inside of the steel pipe (10); Tunnel surface excavation process for excavating the tunnel portion 500 inside the steel pipe 10 when all of the concrete 400 injected into the entire steel pipe 10 is cured; When the tunnel excavation process is completed, the tunnel bottom is formed, and shotcrete or sprayed paint is installed or the formwork 600 is installed inside the tunnel part 500 to prevent corrosion and aesthetics of the steel pipe 10 and the waterproof steel plate 120. Next, the method of installing an underground tunnel forming structure, characterized in that the concrete is made by including a finishing process to make the tunnel wall 700 beautiful. 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 press-fitted in the steel pipe pressurization process, the earth prevention plate is installed through the earth prevention plate inlet 21 formed in the leading pipe 20 to dig out the soil around the earth prevention plate 40. Process; The grouting part 70 is formed by grouting with the grout material around the earth pressure preventing plate 40 through a grouting injection valve formed in the steel pipe 10 when the installation of the steel pipe 10 and the earth pressure preventing plate 40 are completed. By the out-of-gang grouting process to prevent the soil outflow during the excavation of the lower portion of the steel pipe (10) as well as to act as the order; When the out-of-gang grouting 70 and the steel pipe 10 are press-fitted, the steel pipes 10 are alternately symmetrically cut side by side of the steel pipes alternately with each other to secure space and form a stress reinsertion hole 12 to form a steel pipe connection pipe. (16) or by installing a stress member 300 made of reinforcing rods, round bars, and beams (not shown), and then connecting both the steel pipe 10 and the steel pipe 10 to the waterproof steel plate 120 at the cut surface. By welding, by attaching the reinforcing plate 125 to the bottom of the waterproof steel plate 120 to bear the stress to minimize the installation of the stress material 300 and to the flange 16a or the steel bar (both ends of the stress material 300) ( A stress resetting step of integrally projecting the 16b) to prevent the stress material 300 from being separated from the steel pipe 10; Through the installation space of the stress re-insertion hole 12 to dig the lower soil between the steel pipe 10 and the steel pipe 10 to a predetermined depth and then fill the space 220 to the concrete or grout material for tunnel wall surface formation A lower out-of-gang filling process between the steel pipe 10 and the steel pipe 10 to minimize the consumption of the finish material; A concrete pouring process in the steel pipe which injects and cures concrete 400 to the entire inside of the steel pipe 10 when the lower out-of-gang filling process between the steel pipe 10 and the steel pipe 10 is completed; Tunnel surface excavation process for excavating the tunnel portion 500 inside the steel pipe 10 when all of the concrete 400 injected into the entire steel pipe 10 is cured; After the tunnel excavation process is completed, the tunnel bottom surface is formed, and shotcrete or sprinkled steel is poured in order to prevent corrosion and aesthetics of the steel pipe 10, or formwork 600 is installed inside the tunnel part 500. Installation method for underground tunnel formation, characterized in that made by including a finishing process to make the wall 700 beautiful. A large number of large diameter steel pipes 10 having a large diameter are forced into the tunnel construction surface to form a circle or a quadrangle depending on the shape of the construction surface, and the earth is prevented by digging soil between the steel pipes 10. By connecting and grouting sequentially to form a grouting portion 70, Sides of the steel pipes 10 are cut at predetermined intervals to form a stress reinsertion hole 12, through which the soil between the steel pipe 10 and the steel pipe 10 is excavated, and through this space 210 a stress The reinsertion hole 12 is connected to the steel pipe 10 and the steel pipe 10 at any one of the upper side and the lower side, or between them with a waterproof steel plate 120 to be waterproof. After inserting the steel pipe connecting pipe 16 or the stress material 300 made of reinforcing bars, round bars, and beams into the stress reinsertion hole, the steel pipes 10 and the stress material 300 are welded to each other. Simultaneously connecting the flange (16a) or the steel bar (16b) on both sides of the stress member 300 at the same time to prevent the stress member 300 from leaving the steel pipe 10, The grout injection hole 200 for preventing corrosion is installed on the inner surface of the steel pipe 10 so as to be positioned above the stress material 300 or between the stress material 300 and the stress material 300, and the grout material or concrete through the grout injection hole 200. By injecting the empty space 210 to be filled up to stiffen the surroundings and at the same time to be wrapped in the steel pipe 10 and the steel pipe connection stress material 300 and waterproof steel plate 120 to prevent corrosion, After the concrete 400 is injected into the entire steel pipe 10 to cure, and then excavate the tunnel 500 inside the steel pipe 10, Form a tunnel bottom on the lower side of the tunnel portion 500 and cast shotcrete or spraying cloth or prevent the formwork 600 inside the tunnel portion 500 to prevent corrosion and aesthetics of the steel pipe 10 and the waterproof steel plate 120. The installation structure of the underground tunnel, characterized in that the installation is made by pouring concrete to form a tunnel wall (700). A large number of large diameter steel pipes 10 having a large diameter are forced into the tunnel construction surface to form a circle or a quadrangle depending on the shape of the construction surface, and the earth is prevented by digging soil between the steel pipes 10. By connecting and grouting sequentially to form a grouting portion 70, Steel pipes 10, the sides of the steel pipes are alternately symmetrically cut alternately with each other to secure space and form a stress reinsertion hole 12 to form a steel pipe connection pipe 16 or reinforcing rod, round bar, beam (not shown) After installing the stress material 300 made of a) and then welded to be waterproof by connecting both the steel pipe (10) and the steel pipe (10) to the waterproof steel plate 120 at the cut surface, and the reinforcement plate (below) 125 to minimize the installation of the stress material 300 by applying the stress to the stress material 300 by integrally protruding the flange (16a) or the steel bar (16b) at both ends of the stress material (300) Prevents deviation from the steel pipe (10), Through the installation space of the stress re-insertion hole 12 to dig the lower soil between the steel pipe 10 and the steel pipe 10 to a predetermined depth and then fill the space 220 to the concrete or grout material for tunnel wall surface formation To minimize the consumption of finishes, After the concrete 400 is injected into the entire steel pipe 10 to cure and excavate the tunnel 500 inside the steel pipe 10, The tunnel bottom surface is formed under the tunnel part 500, and shotcrete or sprinkling is poured for preventing corrosion and aesthetics of the steel pipe 10, or the form 600 is installed inside the tunnel part 500, and then concrete is poured. Underground tunnel formation structure structure, characterized in that made by forming a tunnel wall (700).