KR200354436Y1 - The structure for underground tunnel formation - Google Patents

Abstract

The present invention does not excavate the earth and sand of the tunnel excavation part in advance, but first installs the tunnel-forming structure in the ground so that it can withstand the stress sufficiently in advance and then excavates the inside of the structure to form the underground tunnel. -36953 and Utility Model Registration No. 274812, further improving the technical contents of the underground tunnel formation structure and the method for the construction of a tunnel construction structure that can be completed in a short time to complete a robust, robust and even waterproof In that,

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.

After 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 to the inner surface of the steel pipe and the steel pipes are connected to each other to connect the steel pipes to each other. By integrally protruding a flange or steel bar at both ends of the stress material, the stress material does not escape from the steel pipe, thereby forming a structurally safe structure.

Corrosion prevention grout inlet is formed on the inner surface of steel pipe to be located between stress material or between stress material and stress material. And prevent corrosion of the outer surface of the stress material and increase the life, as well as to form a more robust structure,

Waterproofing is perfect by waterproofing in various ways to prevent water from penetrating into the tunnel.

By completely eliminating the economic burden of corrosion protection of steel plates and pipes exposed after tunnel excavation, aesthetic problems of uneven parts and excessive maintenance cost, etc.

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 possible to construct tunnels with confidence by completely eliminating work risks, and to build an economical and robust tunnel using less manpower, equipment and materials.

Description

Structure for underground tunnel formation {The structure for underground tunnel formation}

The present invention does not excavate the earth and sand of the tunnel excavation part in advance, but first installs the tunnel-forming structure in the ground so that it can withstand the stress sufficiently in advance and then excavates the inside of the structure to form the underground tunnel. -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

Self-improvement to install the formwork in the steel pipe and install concrete in the steel pipe with the formwork first, and to make the tunneling work stable because the structure is very solid structurally after installation. In addition, by providing the 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 earth and sand of the tunnel excavation part in advance, such as Patent Application No. 2002-36953 and Utility Model Registration No. 274812, which are the original patent applications of the present invention. Using the installation method of the underground tunnel forming structure to endure and excavate the inside of the structure to form an underground tunnel,

Underground tunnel structure is more convenient, faster and more accurate than the method of Patent Application No. 2002-36953 and Utility Model Registration No. 274812, which is the applicant's original invention. The tunnel excavation work can be stably performed, thus completely eliminating work risks to form a tunnel with confidence, and protruding inside the tunnel part to build a strong tunnel with less manpower, equipment, and materials. Of course, without cutting the inner surface of the steel pipe to be used,

After 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 to the inner surface of the steel pipe and the steel pipes are connected to each other to connect the steel pipes to each other. By protruding integrally formed flanges or steel rods at both ends of the stress material, it is possible to form a structurally safe structure because the stress material does not escape from the steel pipe,

Corrosion prevention grout inlet is formed on the inner surface of steel pipe to be located between stress material or between stress material and stress material. And prevent corrosion of the outer surface of the stress material and increase the life, as well as to form a more robust structure,

The installation method of the underground tunnel formation structure is a special way to construct a strong, solid, and perfect tunnel-forming structure, such as waterproofing to prevent water from penetrating into the tunnel. The purpose is to provide a structure for forming underground tunnels in a short time by providing.

1 is an embodiment of a conventional design.

Figure 2 is another embodiment of the prior art design.

Figure 3 is a process diagram showing an embodiment of the present invention.

Figure 4 is a configuration diagram of the leading pipe and pipe used to practice the present invention.

Figure 5a, Figure 5b is an exemplary view of connecting the steel pipe and the stress material with a steel plate as the present design.

Figure 6a, Figure 6b is a tunnel construction state of the waterproofing and steel plate for shotcrete or shot finish with the present invention.

Figure 7a, Figure 7b is a tunnel construction state waterproofed with asphalt felt or sheet waterproofing layer and shotcrete or flushed with the present invention.

Figure 8a, Figure 8b is a tunnel construction state of the present invention by the waterproofing steel plate waterproofing and curing the concrete into formwork.

Figure 9a, Figure 9b is a tunnel construction state of waterproofing with asphalt felt or sheet waterproofing layer as the present design and curing by curing concrete into formwork.

Figure 10a, 10b is another embodiment of the present invention,

Fig. 10a is a tunnel construction state in which the waterproofing steel plate is waterproofed and a separate stress material is applied and the concrete is cured into the formwork at the lower side thereof.

Figure 10b is a tunnel construction state of waterproofing with asphalt felt or sheet waterproofing material layer and curing the concrete into the formwork on the lower side after applying a separate stress material.

Figure 11 is a side view showing a state in which the grout material is injected through the grout inlet formed between the stress material in order to prevent corrosion of the steel pipe and the outer surface of the stress material as 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 16a: Flange

16b: steel bar 17: beam

20: Lead pipe 21: Earth prevention plate inlet

30: press-fit direction adjusting device 40: earth prevention plate

70: grouting part 100: steel sheet

120: waterproofing iron plate 121: asphalt felt or sheet waterproofing material

200: grout inlet 210: empty space

300,750: Stressor for steel pipe connection 400,700: Concrete

500: tunnel 600,800: formwork

The present invention for achieving the above object can be constructed in accordance with the process diagram shown in the accompanying drawings, Figure 3 below, the embodiment of the present invention will be described in detail based on the accompanying drawings.

Embodiment 1 of the present invention is constructed as shown in Figs. 6A to 7B on the basis of the process diagram according to Fig. 3 and Figs. 4 and 5A to 5B.

That is, 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. Digging soil between the steel pipes (10) through the (21) and then connecting and grouting the earth prevention plate 40 through the earth prevention plate inlet 21 to form a grouting portion 70,

The side surface of the steel pipes 10 are cut to form a stress reinsertion hole 12, and a stress material 300 made of a steel pipe connection pipe 16 or various beams 17 is inserted therein, and then the steel pipe 10 is inserted therein. The steel pipe 10 and the stress material 300 by welding the steel plate 100 to the inner surface to connect the steel pipes 10 and at the same time at both ends of the flange (16a) or steel bar ( 16b) integrally protruding to prevent the stress material 300 from escaping from the steel pipe 10,

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,

Between the one steel pipe 10 and the other steel pipe 10 protruding toward the tunnel 500, all connected to the waterproof steel plate 120 as shown in Figures 6a to 6b, or asphalt felt as a whole as shown in Figures 7a to 7b. Or to form a sheet waterproofing material layer 121 to be waterproof,

The tunnel bottom surface is formed under the tunnel part 500, and the steel pipe 10 and waterproof for corrosion protection of the steel pipe 10 and waterproof steel plate 120, and protection and aesthetics of the asphalt felt or sheet waterproofing layer 121, respectively. It is configured by forming a tunnel wall surface using shotcrete or sprayed 140 on the iron plate 120 or asphalt felt or sheet waterproofing material layer 121.

In addition, Embodiment 2 of the present invention is constructed as shown in Figs. 8A to 9B based on the process diagram according to Fig. 3 and Figs. 4 and 5A to 5B.

That is, 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. Digging soil between the steel pipes (10) through the (21) and then connecting and grouting the earth prevention plate 40 through the earth prevention plate inlet 21 to form a grouting portion 70,

The side surface of the steel pipes 10 are cut to form a stress reinsertion hole 12, and a stress material 300 made of a steel pipe connection pipe 16 or various beams 17 is inserted therein, and then the steel pipe 10 is inserted therein. The steel pipe 10 and the stress material 300 by welding the steel plate 100 to the inner surface to connect the steel pipes 10 and at the same time at both ends of the flange (16a) or steel bar ( 16b) integrally protruding to prevent the stress material 300 from escaping from the steel pipe 10,

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,

Between the one steel pipe 10 and the other steel pipe 10 protruding toward the tunnel 500, all connected to the waterproof steel plate 120 as shown in Figure 8a to 8b, or asphalt felt or as a whole as shown in Figure 9a to 9b. After forming the sheet waterproofing material layer 121 to be waterproof,

A tunnel bottom surface is formed below the tunnel part 500 and the inside of the tunnel part 500 for corrosion protection of the steel pipe 10 and the waterproof steel plate 120, and protection and aesthetics of the asphalt felt or sheet waterproofing layer 121, respectively. After installing the formwork 600 by pouring concrete 700 is formed by forming a tunnel wall surface.

In addition, Embodiment 3 of the present invention is constructed as shown in Figs. 10A to 10B on the basis of the process diagram according to Fig. 3 and Figs. 4 and 5A to 5B.

That is, 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. Digging soil between the steel pipes (10) through the (21) and then connecting and grouting the earth prevention plate 40 through the earth prevention plate inlet 21 to form a grouting portion 70,

The side surface of the steel pipes 10 are cut to form a stress reinsertion hole 12, and a stress material 300 made of a steel pipe connection pipe 16 or various beams 17 is inserted therein, and then the steel pipe 10 is inserted therein. The steel pipe 10 and the stress member 300 by welding the steel plate 100 is attached to the inner surface to connect the steel pipe 10 with each other at the same time the flange 12a or the steel rod (12a) at both ends of the stress member 300 ( 12b) integrally protruding to prevent the stress material 300 from leaving the steel pipe 10,

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,

Between the one steel pipe 10 and the other steel pipe 10 protruding toward the tunnel portion 500 side as shown in Figure 10a all connected to the waterproof steel plate 120 or as shown in Figure 10b asphalt felt or sheet waterproofing layer 121 as a whole To make it waterproof.

Reinforce the stress by installing a separate stress material 750 made of reinforcing bars and H beams to the tunnel portion 500 side, and then install the lining formwork 800 below the concrete 700 into the lining formwork 800. It is constructed by forming tunnel wall and floor by pouring and curing.

Here, the present invention in the embodiments 1, 2, 3 for realizing the present invention, as shown in Figure 11 of the accompanying drawings to form a corrosion preventing grout inlet 200 on the inner surface of the steel pipe 10, 10) installed on the upper side of the stress member 300 or between the stress member 300 and the stress member 300 to connect,

The grout material is injected through the grout inlet 200 before the concrete 400 is placed in the steel pipe 10, and due to the soil lost to the outside through the stress reinsertion hole 12 formed during the stress re-installation process for the girdle and the transverse beam. The resulting empty space 210 is filled with the grout material to solidify the surroundings, and at the same time, the outer surface of the steel pipe 10 and the stress material 200 are wrapped with the grout material so that the outer surface of the steel pipe 10 and the outer surface of the stress material 300 are filled. It may further comprise a corrosion preventing gang grouting process to prevent the corrosion from being,

In this way, since the grout material is filled and solidified in the empty space 210, it is structurally very strong, and since the outer surface of the steel pipe 10 and the outer surface of the stress material 300 are not corroded, the service life is extended and structurally more stable. .

Here, the corrosion preventing grout injection hole 200, even if only installed on the upper side of the stress member 300 can sufficiently cover the outer surface of the steel pipe and the stress member, as well as can fill the empty space 210, the stress member 300 and the stress The location between the materials 300 may be omitted.

On the other hand, the stress material 300 used in the girdle and the horizontal beam stress re-installation process,

When the concrete 16 is cast in the steel pipe 10 by integrally protruding the flange 16a or the steel bar 16b at both ends, the stress material 300 is not separated from the steel pipe by the flange 16a or the steel bar 16b. If the embodiment of the method in which the flange (16a) or the steel bar (16b) is formed to protrude, the assumption that the stress material 300 is formed of a steel pipe connecting pipe 16 will be described first to a predetermined length After drilling holes in both left and right sides of the cut steel pipe connecting pipe 16, and then joining the steel bar (16b) by welding to be fixed integrally with the structure after pouring the concrete, or left and right of the steel pipe connecting pipe (16) By welding the flange 16a integrally to both sides, the flange 16a or the steel bar 16b can be prevented in advance so that the steel pipe connecting pipe 16 does not move or come out of the steel pipe 10 and the steel pipe 10, respectively. It is.

At this time, the steel bar (16b) is configured to be coupled to the cross shape is most ideally fixed with the present structure.

The present invention as described above is the first patent of the invention to install the tunnel-forming structure in the ground without having to excavate the earth and sand of the tunnel excavation portion in advance to sufficiently withstand the stress and then excavate the inner structure to form an underground tunnel By further improving the technical contents of the application No. 2002-36953 and Utility Model Registration No. 274812, the inner surface of the steel pipe protruding into the tunnel part is used as it is, without cutting the structure of the tunnel structure By developing special ways to achieve

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.

After 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 to the inner surface of the steel pipe and the steel pipes are connected to each other to connect the steel pipes to each other. By integrally protruding a flange or steel bar at both ends of the stress material, the stress material does not escape from the steel pipe, thereby forming a structurally safe structure.

Waterproofing is perfect by waterproofing in various ways to prevent water from penetrating into the tunnel.

Corrosion prevention grout inlet is installed on the inner surface of the steel pipe between the stress material and between the stress material and the stress material, and through this, grout is injected to fill the void space between the stress materials to solidify the surroundings and at the same time to fix the steel pipe and stress By enclosing the outer surface of the grout material to prevent corrosion of the steel pipe and the outer surface of the stress material, the service life is increased and structurally stronger structure is formed,

By completely eliminating the economic burden of corrosion protection of steel plates and pipes exposed after tunnel excavation, aesthetic problems of uneven parts and excessive maintenance cost, etc.

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 a very innovative design that can construct a tunnel that is economical and robust by using less manpower, equipment and materials, as well as allowing the tunnel to be safely formed by completely eliminating work risks.

Claims (4)

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, The side surface of the steel pipes 10 are cut to form a stress reinsertion hole 12, and a stress material 300 made of a steel pipe connection pipe 16 or various beams 17 is inserted therein, and then the steel pipe 10 is inserted therein. The steel pipe 10 and the stress material 300 by welding the steel plate 100 to the inner surface to connect the steel pipes 10 and at the same time at both ends of the flange (16a) or steel bar ( 16b) integrally protruding to prevent the stress material 300 from escaping from the steel pipe 10, 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, Between the one steel pipe 10 and the other steel pipe 10 protruding toward the tunnel portion 500 side to the waterproof steel plate 120 or by forming an asphalt felt or sheet waterproofing layer 121 on the whole to be waterproof. Form the tunnel bottom surface below the tunnel portion 500, the steel pipe (10) and the waterproof steel plate for the corrosion protection of the steel pipe (10) and waterproof steel plate 120 and the protection and aesthetics of the asphalt felt or sheet waterproofing layer (121). Underground tunnel formation structure, characterized in that made by forming a tunnel wall surface using shotcrete or sprayed 140 to the 120 or asphalt felt or sheet waterproofing material layer (121). 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, The side surface of the steel pipes 10 are cut to form a stress reinsertion hole 12, and a stress material 300 made of a steel pipe connection pipe 16 or various beams 17 is inserted therein, and then the steel pipe 10 is inserted therein. The steel pipe 10 and the stress material 300 by welding the steel plate 100 to the inner surface to connect the steel pipes 10 and at the same time at both ends of the flange (16a) or steel bar ( 16b) integrally protruding to prevent the stress material 300 from escaping from the steel pipe 10, 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, Between the one steel pipe 10 and the other steel pipe 10 protruding toward the tunnel portion 500 side to the waterproof steel plate 120 or by forming an asphalt felt or sheet waterproofing layer 121 on the whole to be waterproof. A tunnel bottom surface is formed below the tunnel part 500 and the inside of the tunnel part 500 for corrosion protection of the steel pipe 10 and the waterproof steel plate 120 and protection and aesthetics of the asphalt felt or sheet waterproofing layer 121. After the formwork 600 is installed, the concrete tunnel structure is formed by placing the concrete 700 to form a tunnel wall surface. 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, The side surface of the steel pipes 10 are cut to form a stress reinsertion hole 12, and a stress material 300 made of a steel pipe connection pipe 16 or various beams 17 is inserted therein, and then the steel pipe 10 is inserted therein. The steel pipe 10 and the stress member 300 by welding the steel plate 100 is attached to the inner surface to connect the steel pipe 10 with each other at the same time the flange 12a or the steel rod (12a) at both ends of the stress member 300 ( 12b) integrally protruding to prevent the stress material 300 from leaving the steel pipe 10, 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, Between the one steel pipe 10 and the other steel pipe 10 protruding toward the tunnel portion 500 side to the waterproof steel plate 120 or by forming an asphalt felt or sheet waterproofing layer 121 on the whole to be waterproof. Reinforce the stress by installing a separate stress material (750) made of reinforcing bars and H beams to the tunnel side, and then install the lining formwork 800 below and cast concrete 700 into the lining formwork 800 and cure. Structure structure for underground tunnel formation, characterized in that by configuring the tunnel wall surface and the bottom surface. The method according to any one of claims 1 to 3, 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, The grout material is injected through the grout inlet 200 before the concrete 400 is poured into the steel pipe 10 to grout the empty space 210 due to the soil lost to the outside when installing the stress material 300 for the girdle and the transverse beam. It is configured to ensure that the ash is filled to solidify the surrounding and at the same time the outer surface of the steel pipe 10 and the stress member 200 is wrapped with a grout material so that the outer surface of the steel pipe 10 and the outer surface of the stress member 300 is not corroded. Structure structure for underground tunnel formation, characterized in that.