Connection device for connecting underwater tunnel and underground tunnel and method for connecting underwater tunnel and underground tunnel using same

Abstract

The present invention relates to a connecting device for connecting an underwater tunnel and an underground tunnel, and a method for connecting an underwater tunnel and an underground tunnel using the same. The connecting device for connecting an underwater tunnel and an underground tunnel and the method for connecting an underwater tunnel and an underground tunnel using the same is configured to utilize a first expansion section capable of performing the function of preventing seawater infiltration by adhering to the ground, and an elastic joint configured to surround the underwater tunnel while allowing dynamic movement of the underwater tunnel.

Description

Technology Field

[0001] The present invention relates to a connecting device for connecting an underwater tunnel and an underground tunnel and a method for connecting an underwater tunnel and an underground tunnel using the same, and more specifically, to a connecting device capable of connecting an underwater tunnel and an underground tunnel that operate while floating in water and a method for connecting an underwater tunnel and an underground tunnel using the same. Background Technology

[0003] Undersea tunnels or immersed tunnels are used to connect landmasses severed by seas, rivers, etc. However, since these types of tunnels are located below or at the surface of the seabed, construction is impossible or expensive when the seabed depth is deep.

[0004] Underwater tunnels, which are being actively researched to solve these problems, operate while floating underwater. Since this technology is still in the invention stage and has never been constructed, there is a lack of technology and information regarding construction methods for ground connection or related devices.

[0005] Since underwater tunnels are located underwater, they need to be connected to tunnels located on the ground to connect to the ground. However, excavation from the ground to the underwater tunnel or from the underwater tunnel to the ground tunnel is not easy, so a method involving the prior construction of a cofferdam is generally considered.

[0006] In other words, connecting an underwater tunnel with a tunnel located on the ground (hereinafter referred to as an underground tunnel) requires a long construction period and high construction costs, and there is a problem that the underwater tunnel and the underground tunnel can only be connected at shallow coastal areas where cofferdam construction is possible.

[0007] Meanwhile, since underwater tunnels are supported by mooring lines or pontoons, they do not remain in a fixed position but move with a certain amount of displacement, whereas underground tunnels are constrained by the ground and relatively little displacement occurs. Therefore, if displacement due to the dynamic behavior of the underwater tunnel is not allowed in the part connecting the underwater tunnel and the underground tunnel (hereinafter referred to as the connection part), stress will be concentrated in the connection part, and there is a risk that the connection part will fail.

[0008] As such, if an underwater structure is destroyed, it causes severe human and material damage and presents the problem of being difficult to repair.

[0009] Therefore, there is a need to develop a connection device for connecting an underwater tunnel and an underground tunnel, and a connection method using the same, which can prevent water infiltration, such as seawater or river water, without the need for cofferdam construction when connecting an underwater tunnel and an underground tunnel, and prevent stress concentration caused by the dynamic behavior of the underwater tunnel at the connection point. The problem to be solved

[0011] One objective of the present invention is to provide a connecting device for connecting an underwater tunnel and an underground tunnel, which enables construction to connect the underwater tunnel and the underground tunnel without requiring separate construction to prevent seawater intrusion, and a method for connecting the underwater tunnel and the underground tunnel using the same.

[0012] Another objective of the present invention is to provide a connecting device for connecting an underwater tunnel and an underground tunnel that prevents damage to the connecting part even when there is dynamic movement of the underwater tunnel, and a method for connecting an underwater tunnel and an underground tunnel using the same.

[0013] The problems of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0015] As a technical means for achieving the above-mentioned technical problem, a connecting device for connecting an underwater tunnel and an underground tunnel according to one embodiment of the present invention may include: a main body having one side and another side open and a first space formed inside; an elastic joint formed of a material capable of elastic movement when force is applied, installed to surround the inner surface of the main body on one side of the main body; a first bulkhead installed to close the open side of the main body; a first expandable part installed to extend from the other end of the main body and capable of expanding and contracting in a direction parallel to the direction from one side of the main body to the other side; a first hole formed in the first expandable part to communicate the outer surface and the inner surface of the first expandable part; an inflow and outflow hose connected to the first hole; a second bulkhead installed to close the other side of the main body; a second hole formed on the upper part of the main body to communicate the first space and the outside of the main body; and a support part installed on the lower part of the main body and capable of being inserted into the ground to fix the main body to the ground.

[0016] In addition, it may include a second expandable portion that is installed between the first bulkhead and the elastic joint to surround the inner surface of the main body and is expandable.

[0017] Additionally, the first expansion member may include an expansion mechanism, one end of which is connected to the other end of the main body and capable of expansion; a grout bag, one end of which is connected to the other end of the expansion mechanism and capable of being filled with cement; and a cushioning member, which is connected to the other end of the grout bag, has a stiffness lower than that of the ground, and is capable of performing the function of absorbing the impact when an impact is applied.

[0018] Additionally, it may include a third hole formed in the main body to communicate the first space and the outside of the main body, and an injection hose connecting the third hole and the grout bag so that cement introduced through the third hole is injected into the interior of the grout bag.

[0019] Additionally, the support member may include a plurality of support members that are longitudinally extended and coupled to the lower part of the main body, capable of being filled with cement, and a plurality of fourth holes that communicate the first space with the interior of each of the support members, so as to allow cement to be injected into the interior of the support members.

[0020] In addition, it may include a connecting hose that connects the second hole and an external device.

[0021] In addition, the cushioning member may be formed of rubber.

[0022] As a technical means for achieving the above-mentioned technical problem, a method for connecting an underwater tunnel and an underground tunnel using a connecting device according to an embodiment of the present invention comprises: a ground forming step of forming a sloping surface of the ground flat in a direction parallel to gravity and forming a bottom surface of the ground flat in a direction perpendicular to gravity; a excavation hole forming step of forming an excavation hole in the bottom surface of the ground adjacent to the sloping surface; an installation step of installing the connecting device according to claim 1 for connecting the underwater tunnel and the underground tunnel in the ground such that the supporting part is inserted into the excavation hole; a contact step of extending the first expansion part to make it adhere to the sloping surface; a seawater discharge and air injection step of discharging seawater contained in a second space between the other side of the main body and the sloping surface through the first hole and injecting air into the second space; a first removal step of removing the second bulkhead; an underground tunnel forming step of excavating the ground with the excavator to form an underground tunnel so that the excavator enters the interior of the first space through the other side of the main body; and in the first space The method may include an extraction step of dismantling the excavator received and extracting it through the underground tunnel, a space formation step of forming a predetermined space including one outer surface of the main body so that a worker can perform a predetermined task, a second removal step of removing the first bulkhead, an inflow step of introducing an underwater tunnel module into the predetermined space, and a connection step of connecting the underwater tunnel module to the main body so that the underwater tunnel module is inserted into the elastic joint.

[0023] Additionally, the first expansion part comprises an expansion mechanism, one end of which is connected to the other end of the main body and capable of expansion; a grout bag, one end of which is connected to the other end of the expansion mechanism and capable of being filled with cement; and a cushioning member connected to the other end of the grout bag. The connecting device for connecting the underwater tunnel and the underground tunnel comprises a third hole formed in the main body to communicate the first space and the outside of the main body, and an injection hose connecting the third hole and the grout bag so that cement introduced through the third hole is injected into the interior of the grout bag. Between the contact step and the discharge step, an expansion step may be included to expand the grout bag by filling it with cement.

[0024] Additionally, the support member may include a plurality of support members that are longitudinally extended and coupled to the lower part of the main body, capable of being filled with cement, and a plurality of fourth holes that communicate the first space with the interior of each of the support members so as to allow cement to be injected into the interior of the support members, and may include a reinforcement step of injecting cement into the interior of the plurality of support members between the installation step and the contact step.

[0025] Additionally, the first removal step may include a construction step of removing the second bulkhead and applying a concrete lining to the inner surface of the main body, and a reinforcement step of applying water-blocking grouting to the inclined surface included in the second space.

[0026] Specific details of other embodiments for solving the problem are included in the description of the invention and the drawings. Effects of the invention

[0028] According to the means for solving the problem of the present invention described above, the connecting device for connecting an underwater tunnel and an underground tunnel and the method for connecting an underwater tunnel and an underground tunnel using the same are configured to utilize a first expansion part that is in close contact with the ground and can perform the function of preventing seawater infiltration, thereby providing the effect of enabling construction to connect an underwater tunnel and an underground tunnel without the need for separate construction to prevent seawater infiltration.

[0029] In addition, since it is configured to use an elastic joint that surrounds the underwater tunnel while allowing for the dynamic movement of the underwater tunnel, it provides the effect of preventing the connection part from being damaged even during the dynamic movement of the underwater tunnel. Brief explanation of the drawing

[0031] FIG. 1 is a drawing illustrating a connecting device for connecting an underwater tunnel and an underground tunnel according to one embodiment of the present invention. FIG. 2 is a drawing illustrating a connecting device that connects an underwater tunnel and an underground tunnel, viewed from one side toward the other. Figure 3 is a drawing showing the underwater tunnel and the underground tunnel connected by a connecting device that connects the underwater tunnel and the underground tunnel installed on the ground. FIG. 4 is a flowchart illustrating a method for connecting an underwater tunnel and an underground tunnel using a connecting device that connects an underwater tunnel and an underground tunnel according to an embodiment of the present invention. Figure 5 is a diagram illustrating the installation steps. Figure 6 is a diagram illustrating the seawater discharge and air injection steps. Figure 7 is a flowchart showing the first removal step. Figure 8 is a diagram illustrating the underground tunnel formation stage. Figure 9 is a diagram illustrating the space formation step. Figure 10 is a diagram illustrating the connection steps. Specific details for implementing the invention

[0032] Embodiments of the present invention are described below with reference to the attached drawings to enable those skilled in the art to easily implement the invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. Furthermore, in order to clearly explain the present invention in the drawings, parts unrelated to the explanation have been omitted, and similar parts throughout the specification are denoted by similar reference numerals.

[0033] Throughout this specification, when a part is described as being "connected" to another part, this includes not only cases where they are "directly connected," but also cases where they are "electrically connected" with other elements interposed between them.

[0034] Throughout this specification, when a component is described as being located “on” another component, this includes not only cases where a component is in contact with another component, but also cases where another component exists between the two components.

[0035] Throughout this specification, when a part is described as "comprising" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. Throughout this specification, terms of degree such as "about," "substantially," etc., are used to mean at or near the stated value when inherent manufacturing and material tolerances are presented in the said meaning, and are used to prevent unscrupulous infringers from unfairly exploiting the disclosure in which precise or absolute values ​​are mentioned to aid in understanding this specification. Throughout this specification, terms of degree such as "a step of" or "a step of" do not mean "a step for."

[0036] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings and the contents described below. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Throughout the specification, the same reference numerals indicate the same components.

[0037] Hereinafter, a connecting device for connecting an underwater tunnel and an underground tunnel according to one embodiment of the present invention will be described.

[0038] FIG. 1 is a drawing illustrating a connecting device for connecting an underwater tunnel and an underground tunnel according to one embodiment of the present invention, FIG. 2 is a drawing illustrating a connecting device for connecting an underwater tunnel and an underground tunnel viewed from one side toward one side, and FIG. 3 is a drawing showing the underwater tunnel and the underground tunnel connected by a connecting device for connecting an underwater tunnel and an underground tunnel installed on the ground.

[0039] Referring to FIG. 1, the connecting device (1) for connecting an underwater tunnel and an underground tunnel includes a main body (100), an elastic joint (200), a first bulkhead (300), a second expansion part (400), a first expansion part (500), a second bulkhead (600), and a support part (700).

[0040] First, the main body (100) will be described.

[0041] As illustrated in FIG. 1, the main body (100) is configured such that one side and the other side are open and a first space (150) is formed inside. For example, the main body (100) may be formed in the shape of a hollow cylinder with a cross-section that is ring-shaped.

[0042] Additionally, a second hole (110) is formed on the upper part of the main body (100) to communicate with the first space (150) and the outside of the main body (100). A connecting hose connecting an external device to the second hole (110) may be installed in the second hole (110), and air, work equipment, etc. may be introduced into the first space (150) through the connecting hose.

[0043] In addition, a third hole (130) is formed in the main body (100) to communicate with the first space (150) and the outside of the main body (100), and as shown in FIG. 1, the third hole (130) is connected to a grout bag (520) to be described later through an injection hose (140).

[0044] Next, the elastic joint (200) will be described.

[0045] As shown in FIG. 1, the elastic joint (200) is installed on one side of the main body (100) to surround the inner surface of the main body (100), and is formed of a material capable of elastic movement when force is applied.

[0046] Specifically, as illustrated in FIG. 3, the elastic joint (200) is formed of a material capable of elastic movement to support the underwater tunnel module (3) while allowing dynamic movement of the underwater tunnel module (3) when the underwater tunnel module (3) is inserted into it.

[0047] Next, the first bulkhead (300) will be explained.

[0048] As shown in FIG. 1, the first partition (300) is installed to close one side of the open body (100).

[0049] This first bulkhead (300) is configured to be dismantled through destruction, disassembly, etc., so that, as shown in FIG. 3, the underwater tunnel module (3) can be dismantled to be inserted into the main body (100) through one side of the main body (100).

[0050] Next, the second expansion section (400) will be explained.

[0051] As illustrated in FIG. 1, at least one second expansion section (400) is installed between the first bulkhead (300) and the elastic joint (200) so as to be expandable from the inner surface of the main body (100) toward the center of the main body (100), and can perform the function of adjusting the position of the underwater tunnel module (3) inserted into the second expansion section (400) through expansion.

[0052] For example, the second expansion part (400) may be composed of a conventional expansion mechanism capable of expansion.

[0053] This second expansion part (400) can perform the function of adjusting the position of the underwater tunnel module (3) so that when the underwater tunnel module (3) is inserted into the main body (100) as shown in FIG. 3, the underwater tunnel module (3) can be inserted into the elastic joint (200).

[0054] Next, the first expansion section (500) will be explained.

[0055] As illustrated in FIG. 1, the first extension part (500) is installed to extend from the other end of the main body (100) and is configured to be extendable in a direction parallel to the direction from one side of the main body (100) to the other side.

[0056] For example, as illustrated in FIG. 2, the first extension (500) may be installed to extend from the other end of the main body (100) to surround the outer surface of the main body (100), and as illustrated in FIG. 3, may extend from the connecting device (1) connecting the underwater tunnel and the underground tunnel to come into contact with the ground (2) to form a second space (800).

[0057] And, as illustrated in FIG. 1, a first hole (512) is formed in the first expansion section (500) to communicate the outer surface and the inner surface of the first expansion section (500), and an inflow and outflow hose (514) is connected to the first hole (512). Through the inflow and outflow hose (514) connected to the first hole (512), seawater contained inside the second space (700) can be discharged from the second space (800), and air can be introduced into the second space (800) from which the seawater has been discharged.

[0058] Meanwhile, the first expansion section (500) may include an expansion mechanism (510), a grout bag (520), and a buffer member (530).

[0059] The expansion mechanism (510) may be formed as a conventional expansion device, etc., in which one side is connected to the other end of the main body (100) and configured to be expandable in the longitudinal direction; for example, the expansion mechanism (510) may be formed as a hydraulic jack. Also, the aforementioned first hole (512) may be formed in the expansion mechanism (510).

[0060] One side of the grout bag (520) is connected to the other side of the expansion mechanism (510) and can be configured to be filled with cement inside.

[0061] As described above, the third hole (130) formed in the main body (100) and the grout bag (520) are connected through an injection hose (140), so cement can be supplied from the main body (100) through the injection hose (140) to fill the grout bag (520) with cement.

[0062] A grout bag (520) of this type is hollow inside and can have a free shape before being filled with cement, but once filled with cement, it takes on a shape that can adhere to the ground surface it comes into contact with. And, as a predetermined amount of time passes, the cement filled inside hardens, increasing its rigidity so that it does not break even under relatively high water pressure.

[0063] The cushioning member (530) can be attached to the other side of the grout bag (520) and can perform the function of absorbing the shock that occurs when the first expansion portion (500) expands and comes into contact with the ground (2).

[0064] Additionally, the buffer member (530) is formed to have less rigidity than the ground (2), so that when the buffer member (530) comes into contact with the ground (2) and adheres closely, it can perform the function of preventing water from flowing between the buffer member (530) and the ground (2).

[0065] These cushioning members (530) can be formed of rubber or the like.

[0066] Next, the second bulkhead (600) will be explained.

[0067] As shown in FIG. 1, the second partition (600) is installed to close the other open side of the main body (100).

[0068] This second bulkhead (600) is configured to be dismantled through destruction, disassembly, etc., so that, as shown in FIG. 3, an underground tunnel (4) can be inserted into the other side of the main body (100) to connect the underwater tunnel module (3), the first space (150), and the underground tunnel (4). At this time, a concrete lining (5) can be constructed on the inner surface of the main body (100) to form a connection part that connects the underwater tunnel module (3) and the underground tunnel (4).

[0069] Next, the support member (700) will be explained.

[0070] The support member (700) is installed at the bottom of the main body (100) and can be inserted into the ground so that the main body (100) is fixed to the ground.

[0071] For example, as illustrated in FIG. 1, the support member (700) may include a support member (710) and a fourth hole (720).

[0072] The support member (710) can be filled with cement inside, extends in the longitudinal direction, and can be connected to the lower part of the main body (100), and multiple members may be provided.

[0073] A plurality of fourth holes (720) may be provided to connect the first space (150) and the interior of each support member (710) so that cement can be injected into the interior of the support member (710).

[0074] That is, by inserting the support member (710) into a hole formed in the ground and then injecting cement or the like into the support member (710) through the fourth hole (720), the support member (700) can more firmly support the connection device (1) that connects the underwater tunnel and the underground tunnel.

[0075] Hereinafter, a method for connecting an underwater tunnel and an underground tunnel using a connecting device for connecting an underwater tunnel and an underground tunnel according to one embodiment of the present invention will be described.

[0076] FIG. 4 is a flowchart illustrating a method for connecting an underwater tunnel and an underground tunnel using a connecting device that connects an underwater tunnel and an underground tunnel according to an embodiment of the present invention.

[0077] Referring to FIG. 4, the method of connecting an underwater tunnel and an underground tunnel using a connecting device that connects the underwater tunnel and the underground tunnel includes a crust formation step (S100), an excavation hole formation step (S200), an installation step (S300), a bonding step (S400), a discharge step (S500), an injection step (S600), a first removal step (S700), an underground tunnel formation step (S800), an outflow step (S900), a space formation step (S1000), a second removal step (S1100), an inflow step (S1200), and a connection step (S1300).

[0078] First, the crust formation stage (S100) is explained.

[0079] The crust formation step (S100) is a step of forming the slope of the ground (2) flat in a direction parallel to gravity and forming the bottom surface of the ground flat in a direction perpendicular to gravity.

[0080] Next, the excavation hole formation step (S200) is described.

[0081] The excavation hole formation step (S200) is a step of forming an excavation hole on the bottom surface of the ground (2) adjacent to the slope of the ground (2).

[0082] Next, the installation step (S300) is described.

[0083] Figure 5 is a diagram illustrating the installation steps.

[0084] As illustrated in FIG. 5, the installation step (S300) is a step of installing a connecting device (1) that connects the aforementioned underwater tunnel and underground tunnel on the ground (2) so that the support member (700) is inserted into the excavation hole.

[0085] At this time, the connecting device (1) connecting the underwater tunnel and the underground tunnel can be supported by a ship (6), etc. and moved to the bottom surface of the ground (2) so that the supporting part (700) is inserted into the excavation hole.

[0086] Next, the contact step (S400) is explained.

[0087] As illustrated in FIG. 3, the contact step (S400) is a step of extending the first expansion portion (500) to make it adhere to the slope of the ground (2).

[0088] At this time, since the slope of the ground (2) is formed flat in a direction perpendicular to gravity by the crust formation stage (S100), the other side of the first expansion part (500) extended from the connecting device (1) connecting the underwater tunnel and the underground tunnel can be easily attached to the slope of the ground (2).

[0089] Meanwhile, between the installation step (S300) and the contact step (S400), a reinforcement step of injecting cement into the interior of a plurality of support members (710) constituting the support member (700) may be included.

[0090] Additionally, after the adhesion step (S400), an expansion step may be included in which cement is filled into the grout bag (520) constituting the first expansion part (500) to expand the grout bag (520).

[0091] Next, the seawater discharge and air injection step (S500) is described.

[0092] Figure 6 is a diagram illustrating the seawater discharge and air injection steps.

[0093] As illustrated in FIG. 6, the seawater discharge and air injection step (S500) is a step of discharging seawater contained in the second space (800) between the other side of the main body (100) and the inclined surface of the ground (2) through the first hole (512), and injecting air into the second space (800) from which the seawater has been discharged.

[0094] Through the seawater discharge and air injection step (S500), the internal pressure of the second space (800) becomes equal to or similar to atmospheric pressure, so construction related to the underground tunnel (4) that penetrates the slope of the ground (2) and communicates with the second space (800) can be carried out easily.

[0095] Next, the first removal step (S600) is described.

[0096] Figure 7 is a flowchart illustrating the first removal step.

[0097] The first removal step (S600) is a step of removing the second bulkhead (600), and as shown in FIG. 7, it may include a construction step (S610) and a reinforcement step (S620).

[0098] The construction step (S610) is the step of removing the second bulkhead (600) and constructing a concrete lining (5) on the inner surface of the main body (100).

[0099] And, the reinforcement step (S620) is a step of performing cutoff grouting on the slope of the ground (2) included in the second space (800).

[0100] Next, the underground tunnel formation stage (S700) is described.

[0101] Figure 8 is a diagram illustrating the underground tunnel formation stage.

[0102] As illustrated in FIG. 8, the underground tunnel formation step (S700) is a step of forming an underground tunnel (4) by excavating the ground (2) with an excavator (7) so that the excavator (7) is introduced into the first space (150) through the other side of the main body (100).

[0103] Next, the outflow step (S800) is explained.

[0104] The removal step (S800) is a step of dismantling the excavator (7) housed in the first space (150) and removing it through the underground tunnel (4).

[0105] Next, the space formation step (S900) is explained.

[0106] Figure 9 is a diagram illustrating the space formation step.

[0107] As illustrated in FIG. 9, the space forming step (S900) is a step of forming a predetermined space (8) including one outer surface of the main body (100) so that a worker can perform a predetermined task.

[0108] This designated space (8) may be configured as a dock filled with air inside so that a worker can work, and may be supported by a vessel (6) and located in a part including one side of the outer surface of the main body (100).

[0109] Next, the second removal step (S1000) is explained.

[0110] The second removal step (S1000) is a step of removing the first partition (300).

[0111] Next, the inflow step (S1100) is explained.

[0112] The inflow step (S1100) is a step of introducing an underwater tunnel module (3) into a predetermined space (8).

[0113] At this time, the underwater tunnel module (3) can be supported by a ship (6) or the like and moved to a predetermined space (8).

[0114] Next, the connection step (S1200) is described.

[0115] Figure 10 is a diagram illustrating the connection steps.

[0116] As illustrated in FIG. 10, the connection step (S1200) is a step of connecting the underwater tunnel module (3) to the main body (100) so that the underwater tunnel module (3) is inserted into the elastic joint (200).

[0117] Through such a connection step (S1200), the underwater tunnel module (3), the connection device (1) connecting the underwater tunnel and the underground tunnel, and the underground tunnel (4) can be connected.

[0118] In addition, by connecting multiple other underwater tunnel modules (3) to an underwater tunnel module (3) connected to a connecting device (1) that connects the underwater tunnel and the underground tunnel, an underwater tunnel can be formed.

[0119] Thus, the connecting device for connecting an underwater tunnel and an underground tunnel according to the present invention and the method for connecting an underwater tunnel and an underground tunnel using the same are configured to utilize a first expansion section that is in close contact with the ground and can perform the function of preventing seawater infiltration, thereby providing the effect of enabling construction to connect an underwater tunnel and an underground tunnel without the need for separate construction to prevent seawater infiltration.

[0120] In addition, since it is configured to utilize an elastic joint that surrounds the underwater tunnel while allowing for its dynamic movement, it provides the effect of preventing the connection part between the underwater tunnel and the underground tunnel from being damaged even by the dynamic movement of the underwater tunnel.

[0121] The foregoing description of the present invention is for illustrative purposes only, and those skilled in the art will understand that other specific forms can be easily modified without altering the technical spirit or essential features of the present invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single unit may be implemented in a distributed manner, and components described as distributed may likewise be implemented in a combined form.

[0122] The scope of the present invention is defined by the claims set forth below rather than by the detailed description above, and all modifications or variations derived from the meaning and scope of the claims and equivalent concepts thereof should be interpreted as being included within the scope of the present invention. Explanation of the symbols

[0124] 1: Connecting device that links an underwater tunnel and an underground tunnel 2 : Ground 3: Underwater Tunnel Module 4: Underground tunnel 5 : Tunnel lining 6 : Ship 7 : Excavator 100 : Main body 200 : Elastic joint 300: 1st bulkhead 400 : 2nd new section 500 : 1st expansion section 600 : Support

Claims

Claim 1 A main body having one side and the other side open and a first space formed inside; an elastic joint installed on one side of the main body to surround the inner surface of the main body and formed of a material capable of elastic movement when force is applied; a first bulkhead installed to close the open side of the main body; a first expandable part installed to extend from the other end of the main body and capable of expanding or contracting in a direction parallel to the direction from one side of the main body to the other side; a first hole formed in the first expandable part to communicate the outer surface and the inner surface of the first expandable part; an inlet and outlet hose connected to the first hole; a second bulkhead installed to close the other side of the main body open; and a second hole formed on the upper part of the main body to communicate the first space and the outside of the main body. A connecting device for connecting an underwater tunnel and an underground tunnel, comprising a support member installed at the lower part of the main body and insertable into the ground so as to fix the main body to the ground, and a second expandable member installed between the first bulkhead and the elastic joint to surround the inner surface of the main body and expandable. Claim 2 delete Claim 3 A connecting device for connecting an underwater tunnel and an underground tunnel, wherein the first expansion part comprises: an expansion mechanism having one side connected to the other end of the main body and capable of expansion; a grout bag having one side connected to the other side of the expansion mechanism and capable of being filled with cement inside; and a cushioning member connected to the other side of the grout bag, having a stiffness smaller than that of the ground, and capable of performing the function of absorbing the impact when an impact is applied. Claim 4 A connecting device for connecting an underwater tunnel and an underground tunnel, comprising: a third hole formed in the main body to communicate the first space and the outside of the main body; and an injection hose connecting the third hole and the grout bag so that cement introduced through the third hole is injected into the interior of the grout bag. Claim 5 A connecting device for connecting an underwater tunnel and an underground tunnel, wherein the support member comprises: a plurality of support members that are capable of being filled with cement, extend in the longitudinal direction, and are coupled to the lower part of the main body; and a plurality of fourth holes that communicate the first space and the interior of each of the support members, respectively, so as to allow cement to be injected into the interior of the support members. Claim 6 A connecting device for connecting an underwater tunnel and an underground tunnel, comprising a connecting hose that connects the second hole and an external device, in paragraph 5. Claim 7 In paragraph 6, the above-mentioned buffer member is formed of rubber, and the connecting device for connecting an underwater tunnel and an underground tunnel. Claim 8 A ground formation step of forming a flat surface of the ground in a direction parallel to gravity and forming a flat bottom surface of the ground in a direction perpendicular to gravity; a excavation hole formation step of forming an excavation hole in the bottom surface of the ground adjacent to the slope; an installation step of installing a connecting device according to claim 1 that connects the underwater tunnel and the underground tunnel in the ground such that the support member is inserted into the excavation hole; a contact step of extending the first expansion member to make it adhere to the slope; a seawater discharge and air injection step of discharging seawater contained in a second space between the other side of the main body and the slope through the first hole and injecting air into the second space; a first removal step of removing the second bulkhead; an underground tunnel formation step of forming an underground tunnel by excavating the ground with the excavator so that the excavator enters the interior of the first space through the other side of the main body; an removal step of dismantling the excavator contained in the first space and removing it through the underground tunnel; a predetermined space including the outer surface of one side of the main body so that a worker can perform a predetermined work. A method for connecting an underwater tunnel and an underground tunnel using a connecting device that connects an underwater tunnel and an underground tunnel, comprising: a space forming step; a second removal step of removing the first bulkhead; an inflow step of introducing an underwater tunnel module into the predetermined space; and a connection step of connecting the underwater tunnel module to the main body so that the underwater tunnel module is inserted into the elastic joint. Claim 9 In claim 8, the first expansion part comprises: an expansion mechanism having one side connected to the other end of the main body and capable of expansion; a grout bag having one side connected to the other side of the expansion mechanism and capable of filling with cement inside; and a cushioning member connected to the other side of the grout bag; and the connecting device for connecting the underwater tunnel and the underground tunnel comprises: a third hole formed in the main body to communicate the first space and the outside of the main body; and an injection hose connecting the third hole and the grout bag so that cement introduced through the third hole is injected into the interior of the grout bag; and between the contact step and the discharge step, an expansion step for filling the grout bag with cement to expand the grout bag, the method of connecting an underwater tunnel and an underground tunnel using a connecting device for connecting the underwater tunnel and the underground tunnel. Claim 10 A method for connecting an underwater tunnel and an underground tunnel using a connecting device, wherein the supporting member comprises a plurality of supporting members that are capable of filling with cement inside, extend in the longitudinal direction, and are coupled to the lower part of the main body; and a plurality of fourth holes that each communicate the first space with the interior of each of the supporting members so as to allow cement to be injected into the interior of the supporting members, and a reinforcing step of injecting cement into the interior of the plurality of supporting members between the installation step and the contact step. Claim 11 A method for connecting an underwater tunnel and an underground tunnel using a connecting device for connecting an underwater tunnel and an underground tunnel, wherein the first removal step comprises a construction step of removing the second bulkhead and constructing a concrete lining on the inner surface of the main body; and a reinforcement step of performing water-blocking grouting on the inclined surface included in the second space.

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