KR102464593B1 - Tunnel protection system - Google Patents

Abstract

The present invention relates to a tunnel shielding system, comprising: a tunnel shielding system for selectively shielding the inside of a tunnel, comprising: a plurality of unit balloons divided by a partition wall, and an expansion balloon disposed inside the tunnel; a gas supply unit for supplying an inflation gas to the inflation balloon through a supply hose; Including, the unit balloon is configured to shield the inside of the tunnel by the expansion of the expansion balloon, so that even if a part of the unit balloon constituting the expansion balloon is damaged in a state in which the expansion balloon expands and shields the tunnel, the unit balloon is not damaged This provides a tunnel shielding system that stably maintains the shielding state by filling the space.

Description

Tunnel Shielding System {TUNNEL PROTECTION SYSTEM}

The present invention relates to a tunnel shielding system, and more particularly, to a tunnel shielding system for shielding sudden water inflow into a tunnel due to leakage, flooding, and explosion during tunnel construction and operation.

Korea is surrounded by the sea on three sides and has a geographical advantage as Japan is located to the east and China is located to the west. Taking advantage of these advantages, the construction of submarine facilities is necessary in order to develop into an economic center such as global logistics and tourism by connecting these countries and neighboring countries. is increasing

In addition to this, recently, in parallel with the construction of bridges in order to increase land efficiency, the construction of underfloor tunnels passing under the ground of rivers is also increasing.

However, it is true that there have been few studies on waterproofing related to tunnels in Korea, and studies related to underfloor facilities have not been much more.

Moreover, in the construction and operation of subsea facilities or subsea facilities, high-performance shielding system for controlling inflow water in the tunnel in case of sudden water leakage due to water leakage, flooding, or terrorism (explosion, etc.) Research on such factors is incomplete, and in the event of an accident such as the one above, the structural stability of the entire structure throughout construction may be at risk.

In particular, in the case of undersea tunnels or undersea tunnels, there are difficulties in design and construction due to high pressure conditions and limitations of ground investigation compared to general onshore tunnels. A shielding facility is required to cope with a large amount of seawater that rapidly flows into the tunnel in the event of an emergency water supply.

Accordingly, in recent years, the development of shielding facilities to cope with sudden water and abnormal inflow water during tunnel construction and operation is urgently required.

An object of the present invention is to provide a tunnel shielding system that can effectively respond to sudden water and abnormal inflow water during tunnel construction and operation.

In particular, an object of the present invention is to maintain the shielding state of the tunnel even if a part of the expansion balloon is damaged in a state in which the tunnel is shielded by expansion.

The invention also aims to shield the tunnel despite the protrusion of the contour of the tunnel.

And, an object of the present invention is to monitor the state of the expansion balloon that shields the tunnel, and accordingly the expansion balloon operates to reliably maintain the shielding state of the tunnel.

In order to achieve the objects of the present invention described above, the present invention, in a tunnel shielding system for selectively shielding the inside of a tunnel, is formed including a plurality of unit balloons divided by a partition wall and is an expansion disposed inside the tunnel balloons; a gas supply unit for supplying an inflation gas to the inflation balloon through a supply hose; Including, it provides a tunnel shielding system, characterized in that for shielding the inside of the tunnel by the expansion of the expansion balloon.

The 'longitudinal direction' and similar terms described in the present specification and claims are defined as the axial direction of the supply passage 120a, and the 'radial direction' and similar terms described in this specification and claims are defined as the supply passage 120a ) in the direction away from it.

As described above, according to the present invention, if the inflow water suddenly increases during construction or operation inside the tunnel, the tunnel is shielded to secure the evacuation time for vehicle occupants passing through the tunnel and to reduce the possibility of damage to the structure due to the inflow water. provide the system.

In particular, according to the present invention, as the expansion balloon is partitioned into a plurality of unit balloons, in a state in which the expansion balloon expands and shields the tunnel, even if a part of the unit balloon constituting the expansion balloon is damaged, the unit balloon that is not damaged is By filling the space, an advantageous effect of stably maintaining the shielding state can be obtained.

And, according to the present invention, even if a protrusion is formed in the contour of the tunnel to be shielded, by delaying the expansion order of the unit balloon disposed on the outermost side, an advantageous effect of further increasing the shielding efficiency of the tunnel in the form of accommodating the protrusion is obtained. can

In addition, the present invention measures the pressure of the unit balloon of the expansion balloon that shields the tunnel with a pressure sensor, thereby obtaining an advantageous effect of monitoring the damage state of the unit balloon by whether the pressure fluctuation of the unit balloon exceeds a predetermined value. have.

In addition, the present invention is advantageous in that, when it is sensed that a part of the unit balloon is damaged, the supply of the inflation gas from the gas supply unit is stopped, and the inflation gas is supplied only to the unit balloon that shields the tunnel so that the shielding action of the tunnel can be maintained for a long time. effect can be obtained.

1 is a view showing the configuration of a tunnel shielding system according to an embodiment of the present invention;
Figure 2 is a view showing the installation position of the tunnel shielding system of Figure 1;
3 to 5 are views showing the configuration according to the blocking process by the expansion balloon of FIG. 1;
6 is a view showing a shape in which the inflation balloon of FIG. 1 is unfolded in a non-expanded state;
7 is a view showing a state in which the inflation balloon of FIG. 6 is inflated;
Fig. 8 is a cross-sectional view of the inflation balloon taken along line XX of Fig. 7;
9 is a cross-sectional view showing a state in which a part of the unit balloon of the expansion balloon of FIG. 8 is broken;
10 is a view showing an action of filling the empty space of the damaged unit balloon of FIG. 9;
Fig. 11 is a longitudinal sectional view of the inflation balloon taken along line YY of Fig. 7;
12 is a view showing an inflation balloon of a tunnel shielding system according to another embodiment of the present invention;
Fig. 13 is a cross-sectional view taken along line ZZ of Fig. 12;
FIG. 14 is a diagram illustrating an expansion sequence of the unit balloon of the expansion balloon of FIG. 12 .

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments. For reference, the same numbers in this description refer to substantially the same elements, and may be described by citing the contents described in other drawings under these rules, and the contents determined to be obvious to those skilled in the art or repeated may be omitted.

As shown in the figure, the tunnel shielding system 1 according to an embodiment of the present invention is provided inflatable inside the tunnel 10 and having an inflation balloon 120 that shields the inside of the tunnel 10 It includes a shielding structure 100 and a wire structure 200 that restricts movement of the expansion balloon 120 in a state in which the tunnel is shielded by the shielding structure 100 .

For reference, in the present invention, the term "tunnel 10" may be understood as a concept including all of the onshore tunnel 10, the underground tunnel 10 and the undersea tunnel 10 and the undersea tunnel, The present invention is not limited or limited by the type and characteristics.

The shielding structure 100 is provided to shield the inflow water in the tunnel 10 in case of sudden water leakage due to leakage, flooding, explosion, etc. during construction and operation of the tunnel 10, and a gas supply unit 110 for supplying expansion gas and , the expansion balloon 120 that is supplied with the expansion gas to inflate, and the expansion balloon 120 is maintained at one side of the tunnel 10 before being expanded, and when the expansion balloon 120 is expanded, the expansion balloon 120 . It is configured to include a constraining member 130 that rotates and opens to move to the central portion of the tunnel 10 .

Since the expansion balloon 120 is arranged in a contracted state (non-expansion state) in normal times when inflow water does not occur inside the tunnel 10 , the expansion balloon 210 is in a non-expansion state of the expansion balloon 120 . ) may be provided with a restraining member 130 for temporarily supporting the tunnel 10 on the inner wall surface.

The constraining member 130 may be provided in various structures capable of temporarily supporting the non-expanded state of the expansion balloon 120 , and the present invention is not limited or limited by the type and structure of the constraining member 130 . . For example, as the constraining member 130, a normal net (net) may be used. In some cases, it is possible to use a conventional plate or frame as a restraining member, or a structure in which a mesh and a frame or other members are combined.

For reference, the installation position and number of the expansion balloons 120 may be variously changed according to the characteristics and design conditions of the tunnel 10 , and the present invention may be changed depending on the installation position of the expansion balloons 120 in the tunnel 10 . It is not limited or limited.

Preferably, referring to FIG. 2 , the inflation balloon 120 is a point required in a risk scenario (eg, before and after a crossover), a point where the tunnel 10 cross-section is small, a point at which the influence by seawater can be minimized , a point with relatively good ground conditions, a point where installation and maintenance are easy, an area close to the Gunan Station, a point with high structural rigidity of the tunnel 10 structure (eg, a horizontal shaft location), and the like. In some cases, if a shielding facility is required in addition to the above positions, it is possible to install the inflation balloon in other positions.

Meanwhile, the step of blocking the tunnel 10 by the expansion balloon 120 may include an expansion preparation step, an expansion preparation step, an expansion progress step, and an expansion maintenance step. In some cases, it may be configured to directly perform the expansion progress step without the expansion preparation step.

More specifically, when the water introduced into the tunnel 10 and the level of the inflow water are sensed above a certain level, an expansion preparation step of preparing the expansion balloon 120 for expansion may be performed.

In the inflation preparation step, the inflation balloon 120 may be on standby in a state just before it is inflated. Referring to FIG. 3 , in the expansion preparation step, the support state of the expansion balloon 120 by the restraining member 130 may be released, and as the support state of the inflation balloon 120 by the restraining member 130 is released, the expansion The balloon 120 may be arranged in an unfolded form to facilitate expansion.

For reference, in the embodiment of the present invention, an example configured to release the support state of the expansion balloon 120 by the constraining member 130 in the expansion preparation step is described, but in some cases, the constraining member is attached to the constraining member in the expansion preparation step It is also possible to maintain the supported state by the , and to wait in a state immediately before the gas supply unit can supply the expansion gas. Alternatively, it is also possible to configure the inflation balloon to start inflating at a slower rate than in the inflation progress step while the support state by the member is released in the inflation preparation step.

4A and 4B, in the expansion progress step, the gas supply unit 110 supplies the expansion gas with the maximum output so that the expansion balloon can be rapidly expanded as quickly as possible. The state of completion of the expansion of 120 is maintained.

For reference, as shown in Fig. 4a, the shielding structure 100 is installed on both sides of the tunnel, respectively, so that the two expansion balloons 120 can cooperate to shield the tunnel 10, Fig. 4b As shown in , the shielding structure 100 may be installed only on one side of the tunnel to shield the tunnel 10 with one inflation balloon 120 .

Hereinafter, the shielding structures 100 and 100' of the present invention that implement the shielding action of the tunnel 10 in the expansion progress step and the expansion maintenance step will be described in detail.

The gas supply unit 110 of the shielding structure 100 is configured to supply the inflation gas from the gas supply source 111 to the inflation balloon 120 through the supply hose Pa, as shown in FIG. 6 . Here, the gas supply source 111 may be formed as a chamber for storing the inflation gas, or may be formed as an air pump for generating the inflation gas having a higher pressure than atmospheric pressure.

The supply hose Pa is formed of a flexible material that is easily bent and deformed. For example, the wire may be formed of a reinforced rubber material. Accordingly, although the expansion balloon 120 is folded in a state hidden on one side of the tunnel by the constraining member 130 and the expansion balloon 120 moves to the center of the tunnel as the constraining member 130 is opened, the expansion balloon 120 ) and the expansion gas can be supplied while maintaining the connection state.

As the inflation gas supplied by the gas supply unit 110 , various gases such as air or nitrogen may be used, and a gas that is not flammable or explosive is selected.

The expansion balloon 120 of the shielding structure 100 is normally arranged in a contracted state when no inflow water is generated inside the tunnel, and when the inflow water is generated, the expansion gas is supplied from the gas supply unit 110 to 99. It is configured to block the inside of the tunnel 10 while expanding accordingly.

The inflation balloon 120 may be provided in a structure capable of selectively contracting and inflating, and the present invention is not limited or limited by the structure and characteristics of the inflation balloon 120 .

Preferably, the expansion balloon 120 is provided in a flexible structure and can be expanded to correspond to the cross-sectional shape of the tunnel 10 . More preferably, the inflation balloon 120 may be manufactured in a structure that is light, easy to move and handle, and may be configured to maintain a sufficient structural form by internal pressure. In addition, the expansion balloon 120 is preferably configured to expand in various shapes and sizes according to the type and characteristics of the tunnel 10, and is preferably manufactured to have material rigidity that can be installed with a minimum volume. For example, the inflation balloon 120 may be made of a conventional fabric material, and the material and characteristics of the inflation balloon 120 may be variously changed according to required conditions and installation environments.

The tunnel 10 may be shielded by one inflation balloon 120 as shown in FIG. 4B, and a plurality of inflation balloons 120 shielding the inner part of the tunnel 10 one by one as shown in FIG. 4A. These may be shielded in cooperation with each other.

The inflation balloon 120 includes an outer shell 121 in contact with the inner wall of the tunnel 10 , an endothelium 122 forming a supply passage 120a through which the inflation gas is supplied to the central portion, and the outer shell 121 and the endothelium 122 . ) is formed to include a partition wall 124 connecting between .

And, each of the unit balloons (A1, A2, ...) is a gas supply port (122a) is formed at a position communicating with the supply passage (120a) formed surrounded by the endothelium (122). Accordingly, when the inflation gas is supplied from the gas supply unit 110 to the supply passage 120a, the plurality of unit balloons A1, A2, ... are inflated.

According to a preferred embodiment of the present invention, as shown in Fig. 8, in order to supply the inflation gas to each of the unit balloons A1, A2, ... from the gas supply unit 110, the supply hose Pa is Rather than supplying the inflation gas to all the unit balloons A1, A2, ... at once, the supply hose Pa is divided into a plurality to supply the inflation gas to each of the unit balloons of a predetermined group (99).

For example, the expansion balloon 120 shown in FIGS. 8 to 11 has eight unit balloons (...; B1, B2, B3, B4, B5) formed by a partition wall (124 in FIG. 8) extending radially. , B6, B7, B8; ...), and at the same time four unit balloons (A1, B1, C1, D1; , C5, D5;,...).

Accordingly, as shown in Fig. 9, any one of the plurality of unit balloons (..., B1, B2, ...) is damaged (ee) by an external force, etc. is leaked 98 to the outside, as shown in FIG. 10 , there are still Since the inflation gas is supplied 99, the partition wall 124 of the unit balloons (..., B3, B4, B6, B7,...) in the vicinity penetrates into the space occupied by the damaged unit balloon (B5). while filling in

Through this, the expansion balloon 120 not only smoothly implements a shielding action to block the flow of abnormal inflow water by filling the inside of the tunnel 10 while initially expanding, but also to smoothly implement a shielding action of any one unit balloon (B5 in the drawing) in the expanded state. Even when the unit balloons are damaged, it is possible to obtain an advantageous effect of continuing the shielding action by filling the space of the unit balloons adjacent thereto.

On the other hand, the supply hose Pa is divided into eight individual supply hoses (P1, P2, P3, P4, P5, P6, P7, P8), from the individual supply hoses (P1, P2, ...) to the unit balloon. A supply tube (Px) for supplying is formed. For convenience, the supply tube (Px) is shown to be inserted into the gas inlet (122a) of each unit balloon, but between the supply tube (Px) and the gas inlet (122a), the expansion gas leaks to the outside or foreign substances from the outside Sealed to prevent ingress.

Accordingly, when the gas supply unit 110 supplies the expansion gas to the eight individual supply hoses (P1, P2, P3, P4, P5, P6, P7, P8), for example, the first individual supply hose (P1) supplies the inflation gas 99 to the four unit balloons A1, B1, C1, D1 arranged in the longitudinal direction, and the fifth individual supply hose P5 is the four unit balloons A5 arranged in the longitudinal direction. B5, C5, D5 is supplied with inflation gas (99).

Each individual supply hose (P1, P2,...) is equipped with a pneumatic sensor (S1,..., S5,...) that measures the respective pressure, and each individual supply hose (P1, P2) , ...) is provided with shut-off valves V1, ..., V5, ... for shutting off the supply of the expansion gas to the gas supply chamber 111 . That is, the controller 112 for controlling the supply of the inflation gas to the inflation balloon 120 is provided.

Accordingly, as shown in FIG. 9, any one of the plurality of unit balloons A1, B1, C1, D1;...; A5, B5, C5, D5;,.. When one unit balloon B5 is broken, the pressure of the fifth individual supply hose P5 that was supplying the inflation gas to the broken unit balloon B5 is momentarily reduced, and the other individual supply hoses P1, P2, .

The controller 112 detects that the fall width of the pneumatic measurement value measured in real time at the pneumatic sensors S1,... installed in each individual supply hose P1, P2,... is instantaneously reduced, and then the rise If it is lower than the average value of the other individual supply hoses by a predetermined ratio or more, the unit balloon (Fig. In the embodiment shown in A5, B5, C5, D5) it is detected that the damage has occurred in any one or more.

In this way, the shut-off valve (V5 in the embodiment shown in the drawing) of the individual supply hose connected to the unit balloon detected as broken is closed, thereby preventing the expansion gas from leaking to the outside anymore. Accordingly, since the expansion gas to be supplied to the closed individual supply hose (P5 in the embodiment shown in the figure) is supplied to the other unit chambers, the pressure of the other unit chambers is increased to prevent the partition wall 124 as shown in FIG. It is possible to obtain the advantageous effect of stably maintaining the shielding state by filling the space occupied by the unit chamber damaged by movement within a short time.

On the other hand, according to another embodiment of the present invention, when it is detected by the pneumatic sensor (S1, ...) that the predetermined pressure is reached by supplying all of the inflation gas to the unit balloon through the individual supply hose, the inflation balloon 120 Since the tunnel 10 is blocked by expanding to reach a predetermined pressure, the shut-off valves V1, ... may all be closed to maintain a state in which the expansion gas is no longer supplied. Even in this state, the pressure measurement values of the pneumatic sensors (S1,...) are monitored in real time.

At this time, if the pressure in any one or more of the pneumatic sensors (S1, ...) suddenly drops, it is detected that at least one of the unit balloons connected to the individual supply hoses where the abnormality of the pneumatic measurement value is found is broken , by opening the shut-off valve of another individual supply hose to supply additional inflation gas, as shown in FIG. 10 , adjacent unit balloons may operate to sequentially fill the space occupied by the damaged unit balloons.

In the embodiment illustrated in the figure, unit balloons A1, B1, C1, D1; A2, B2, C2, D2;...) in which one individual supply hose P1, P2,... Each of them as a group (群), although the configuration for supplying the expansion gas for each group as an example, the present invention is not limited thereto.

In other words, according to another embodiment of the present invention, although not shown in the drawings, the unit balloons A1-A8; B1-B8; C1-C8; D1-D8 arranged in the circumferential direction are each as one group. , may be configured to supply inflation gas to the unit balloons arranged in the circumferential direction through individual supply hoses. Under this configuration, when a breakage occurs in any one unit balloon, the shielding state of the tunnel 10 is maintained in such a way that the unit balloons adjacent in the longitudinal direction fill the space of the damaged unit balloon.

In addition, according to another embodiment of the present invention, although not shown in the drawings, the arbitrarily bundled unit balloons may be individually grouped into one group, and the inflation gas may be supplied to the arbitrarily bundled unit balloons through an individual supply hose.

According to another embodiment of the present invention, one individual supply hose is configured to supply inflation gas only to one unit balloon without supplying inflation gas to two or more unit balloons at the same time, so that group control It may be configured to control the inflation balloon by individual control instead of performing

As an example, according to another embodiment of the present invention shown in FIGS. 12 and 13 , the shielding structure 100 ′ receives the inflation gas supplied from the gas supply unit 110 ′ and expands the inflation balloon 120 ′. consists of including

Here, in the expansion balloon 120', a plurality of unit balloons (M1; M21, M22, ...; M31, M32, ...) are partitioned by a partition wall 124 and formed in a columnar shape along the longitudinal direction. . Here, the gas inlet 120x is formed on the surface of one end of the column. The unit balloons (M1; M21, M22,...; M31, M32,...) can form a polygonal column of various cross-sections such as a triangle, a square, and a pentagon, and as shown in the figure, It may be formed in a honeycomb-shaped cross-section, which is a stable cross-section. That is, the expansion balloon 120 ′ is formed so that a plurality of unit balloons have a honeycomb cross-section by the partition wall 124 formed inside the outer wall 121 .

As shown in FIG. 13 , the unit balloons include a first unit balloon M1 located in a first region R1 that is the central portion, and second unit balloons M21 and M22 located in a second region R2 that directly surrounds the central portion. , M23,..., M26) and the third unit balloons (M31, M32,...) located in the third area R3 surrounding the second area R2 in a radial form that spreads out from the center can be Here, the first unit balloons M1 located in the first region R1 shield the central part of the tunnel, and the third unit balloons M31, M32, ... located in the third region R3 are the edges of the tunnel. and the second unit balloons M21, M22, ... located in the second region R2 shield the space between the center part and the edge of the tunnel.

Each unit balloon (M1; M21, M22,...; M31, M32,...) has a gas inlet 120x formed on the surface, and the gas supply source 111 and each unit balloon M1,... ) of the gas inlet 120x is connected to the gas supply source 111 by a flexible individual supply hose Pn made of a flexible material, and is directly supplied with the inflation gas from the gas supply source 111 and is expanded.

Each individual supply hose Pn is provided with a pneumatic sensor S for monitoring the supply pressure of the inflation gas, and a shut-off valve V for blocking the supply of the inflation gas at the same time.

The gas supply unit 110 supplies the expansion gas from the gas supply source 111 to the plurality of unit balloons M1, M21, ... forming the expansion balloon 120' through the individual supply hose Pn, The tunnel 10 is shielded by inflating the balloons M1, M21, .... At this time, the gas supply unit 110 first supplies the inflation gas to the first unit balloon M1 of the first region R1 located in the central portion, and sequentially the second unit balloon located in the second region R2 ( M21,...) and the third unit balloons (M31, M32,...) located in the third region R3 are supplied with inflation gas. That is, the inflation gas is supplied in the order of the radial direction indicated by reference numeral 77 .

This means that the time at which inflation gas is started to be supplied to the first unit balloon (M1) located in the center is to the second unit balloons (M21, M22, ...) and the third unit balloons (M31, M32, ...). It means faster than that, and is not necessarily limited to starting to supply the inflation gas to the second unit balloons M21, M22, ... after the first unit balloon M1 is fully inflated.

Accordingly, the first unit balloon M1 of the first region R1 located at the center of the tunnel is fully inflated first, and then the second unit balloon M2 of the second region R2 is completely inflated. , and finally, the third unit balloon M3 of the third region R3 located at the outermost portion is inflated. Even if the internal cross-sectional shape of the tunnel 10 and the shape of the expansion balloon 120 ′ shown in FIG. 12 do not completely match, the expansion gas is supplied to the third region R3 located at the edge of the third region R3 to inflate it. If the unit balloons M31, M32, ... had the shape of a honeycomb cross-section, the gap vc that would be generated between the unit balloons 10 and the tunnel 10 was more completely filled.

That is, by sequentially supplying the expansion gas from the unit balloon M1 located at the center to the unit balloons M31, M32, ... located at the edge, the cross-sectional shape of the tunnel 10 is exactly the expansion balloon 120 . '), even if it does not match the outline of the tunnel 10, it is possible to obtain the advantage of further increasing the shielding efficiency of the tunnel 10.

As in the above-described embodiment, the pneumatic sensor (S) disposed in each individual supply hose (Pn) measures and monitors the air pressure of the unit balloons (M1, ...) in real time, and any one of the plurality of unit balloons When an abnormality is detected as damaged, the shut-off valve of the individual supply hose connected to the damaged unit balloon is closed (CLOSE), and the shut-off valve of the individual supply hose connected to the remaining unit balloon is opened (OPEN) to supply additional inflation gas. The space occupied by the unit balloon is controlled to be filled by the adjacent unit balloon.

As described above, when the expansion balloon 120 expands to shield the tunnel 10, a method is required to prevent the expansion balloon 120 from being pushed and moved by the inflow water. To this end, the wire structure 200 is arranged to selectively traverse the inside of the tunnel 10 and is provided to limit the movement of the expansion balloon 120 in which the expansion is completed inside the tunnel 10 .

The wire structure 200 includes a support member (not shown) that temporarily supports the wall surface of the tunnel 10, and is disposed without sagging along the wall surface of the tunnel 10 by the support member in the standby position. can be Through this, it is possible to prevent a decrease in utilization of the tunnel 10 due to the wire structure 200 being stretched and to create a beautiful tunnel 10 environment.

The wire structure 200 in the state switched from the standby position to the operating state, as shown in FIGS. 4A to 5 , is arranged to cross the inside of the tunnel 10 and has various structures capable of constraining the movement of the inflation balloon. can be formed with For example, the wire structure 200 has an upper and lower wire part 212 disposed to cross the inside of the tunnel 10 in the vertical direction, and one end of the upper and lower wire part 212 so as to intersect the upper and lower wire part 212 . It is connected to and the other end includes a cross wire portion 214 connected to the wall of the tunnel (10). As such, by including the upper and lower wire portions 212 and the crossed wire portions 214 in which the wire members cross each other, the effect of more stably maintaining the restraint of the first inflation balloon by the first wire member 310 can get

Here, that the wire structure 200 is arranged to cross the inside of the tunnel 10 means that the wire structure 200 moves through the inside of the tunnel 10 along the radial direction, the radial direction, the tangential direction, etc. of the tunnel 10 . It is defined as being placed across.

As such, by providing the wire structure 200 inside the tunnel 10 and limiting the movement of the inflation balloon 120 by the wire structure 200 , abnormal movement of the inflation balloon 120 is prevented. And, it is possible to obtain an advantageous effect that the shielding can be made precisely by the expansion balloon 120 at the location where the shielding is required.

The tunnel shielding system 1 according to the present invention configured as described above shields the tunnel when the inflow water suddenly increases during construction or operation inside the tunnel to secure evacuation time for vehicle occupants passing through the tunnel, and the structure by the inflow water In particular, as the expansion balloon 120 is partitioned into a plurality of unit balloons by the partition wall, a portion of the unit balloons constituting the expansion balloon while the expansion balloon expands and shields the tunnel Even if the unit balloon is broken, an advantageous effect of stably maintaining the shielding state can be obtained by filling the space of the unit balloon that is not broken.

As described above, although described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify and modify the present invention within the scope without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that it can be changed.

10: tunnel 100, 100: shielding structure
110: gas supply 111: gas supply
120: inflation balloon 130: constraint member
200: wire structure

Claims (14)

A tunnel shielding system for selectively shielding the inside of a tunnel,
an expansion balloon which is divided by the partition wall and includes a plurality of unit balloons having a gas inlet formed on the surface, and is disposed inside the tunnel;
a gas supply unit including a gas supply source and a supply hose connected from the gas supply source, the gas supply unit supplying the inflation gas to the unit balloon of the inflation balloon through the gas inlet;
Including, wherein the expansion balloon is formed to include two or more unit balloons radially from the central portion, and by first supplying the inflation gas to the unit balloons disposed in the central portion, shielding the inside of the tunnel by the expansion of the expansion balloon Tunnel shielding system, characterized in that.
The method of claim 1,
The expansion balloon is provided with a supply passage through which the inflation gas is supplied, and the unit balloon has a gas inlet formed at a position in contact with the supply passage to receive the inflation gas.
3. The method of claim 2,
The supply hose is formed of a flexible material and is coupled to the supply passage to supply the inflation gas to the inflation balloon.
3. The method of claim 2,
The supply hose is formed of a flexible material and includes an individual supply hose connected to the gas inlet through the supply passage, and the expansion gas is supplied to the unit balloon through the individual supply hose.
delete The method of claim 1,
The supply hose is formed of a flexible material and is formed of a plurality of individual supply hoses and is connected to each of the gas inlets of the plurality of unit balloons to supply the inflation gas to each of the unit balloons through the individual supply hoses. shielding system.
The method of claim 1,
The unit balloon is formed in a pillar shape, and the gas inlet is formed on a surface of one end of the pillar.
7. The method of claim 6,
The unit balloon is a tunnel shielding system, characterized in that formed in a polygonal cross section.
9. The method of claim 8,
The unit balloon is a tunnel shielding system, characterized in that formed in a honeycomb cross section.
delete 10. The method according to any one of claims 4 or 6 to 9,
A tunnel shielding system, further comprising a pressure sensor for measuring the pressure of the unit balloons, and detecting the damaged unit balloons by monitoring pressure states of the plurality of unit balloons.
12. The method of claim 11,
Tunnel shielding system, characterized in that the supply of inflation gas to the unit balloon detected as broken is stopped.
10. The method according to any one of claims 1 to 4 or any one of claims 6 to 9,
The tunnel shielding system, characterized in that two or more expansion balloons are disposed inside the tunnel, and the two or more expansion balloons cooperate to shield the tunnel.
10. The method according to any one of claims 1 to 4 or any one of claims 6 to 9,
The tunnel is a tunnel shielding system, characterized in that the bottom tunnel.

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