A tunnel sealing device

Abstract

The present invention provides a tunnel sealing device, which relates to the technical field of tunnel sealing and is designed to solve the problem of existing tunnel sealing devices that cannot be completely sealed with the tunnel surrounding rock. The tunnel sealing device includes a sealing wheel disc and a cross-section sealing assembly. The sealing wheel disc includes a wheel disc support ring and a plastic capsule cavity surrounding and affixed to the outer circumference of the wheel disc support ring. A first bladder bag, a second bladder bag, and an inflation tube are provided inside the plastic capsule cavity and at various positions along the circumference of the wheel disc support ring. The first bladder bag contains a first expansion agent, and the second bladder bag contains a second expansion agent. Both the first bladder bag and the second bladder bag are configured to rupture when the plastic capsule cavity reaches a set pressure. The first expansion agent and the second expansion agent can expand in a mixed state to fill the plastic capsule cavity with the gap between the wheel disc support ring and the tunnel surrounding rock. The cross-section sealing assembly is installed on the wheel disc support ring and can seal the ventilation holes. The present invention can completely seal with the tunnel surrounding rock.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel sealing, and in particular to a tunnel sealing device. Background Art

[0002] When sudden disasters occur in coal mines (such as spontaneous combustion in goaf, tunnel fire, water gushing, and dust explosion), it is often necessary to quickly block the tunnel airflow and seal the tunnel. To achieve this, a tunnel sealing device is usually required.

[0003] Currently, there are many types of tunnel sealing devices in underground coal mines, which can basically meet the needs of temporary rapid sealing. However, some problems still exist during use. For example, some tunnel sealing devices cannot completely seal the tunnel surrounding rock, and a certain gap exists. They also need to spray expansion materials for secondary sealing, or pre-grooving the tunnel surrounding rock to ensure the sealing effect. This reduces the sealing efficiency of the tunnel and cannot guarantee the sealing quality. Furthermore, the existing tunnel sealing devices on the market require destruction and dismantling to open the tunnel sealing device after sealing, which is very inconvenient. Summary of the Invention

[0004] The purpose of the present invention is to provide a tunnel sealing device to solve the technical problem that existing tunnel sealing devices cannot be completely sealed with the tunnel surrounding rock.

[0005] The tunnel sealing device provided by the present invention includes a sealing wheel disc and a cross-section sealing assembly, wherein the sealing wheel disc includes a wheel disc support ring and a plastic capsule cavity surrounding and attached to the outer circumference of the wheel disc support ring, wherein a first bladder bag, a second bladder bag and an inflation tube are provided inside the plastic capsule cavity and at various positions along the circumference of the wheel disc support ring, wherein one end of the inflation tube extends into the plastic capsule cavity and the other end of the inflation tube extends out of the plastic capsule cavity, wherein the first bladder bag is filled with a first expansion agent and the second bladder bag is filled with a second expansion agent, and the inflation tube is configured to inflate the plastic capsule cavity, wherein the first bladder bag and the second bladder bag are both configured to rupture when the plastic capsule cavity reaches a set pressure, and the first expansion agent and the second expansion agent can expand in a mixed state so that the plastic capsule cavity fills the gap between the wheel disc support ring and the tunnel surrounding rock; the end face of the wheel disc support ring is provided with a ventilation hole, and the cross-section sealing assembly is installed on the wheel disc support ring, and the cross-section sealing assembly can close the ventilation hole.

[0006] Furthermore, the plastic capsule cavity includes a plurality of sub-capsule cavities arranged along the circumference of the wheel support ring, the plurality of sub-capsule cavities are not connected to each other, and each sub-capsule cavity is provided with the first capsule bag, the second capsule cavity and the inflation tube.

[0007] Furthermore, a plurality of skeleton beams are fixedly provided on the end surface of the wheel support ring, and the plurality of skeleton beams are arranged radially. The plurality of skeleton beams are configured to support the wheel support ring, and the space between any two adjacent skeleton beams forms the ventilation hole.

[0008] Furthermore, the plastic capsule cavity is bonded and fixed to the wheel disc support ring.

[0009] Furthermore, the first pouch, the second pouch and the inflation tube are closely arranged inside the plastic capsule cavity.

[0010] Furthermore, the cross-section sealing component can adjust the opening of the ventilation hole.

[0011] Furthermore, the cross-section sealing component includes a fixed blade group and a movable blade group, wherein the fixed blade group is fixedly arranged on the wheel support ring, the fixed blade group includes a plurality of first blades arranged radially, a ventilation gap is formed between any two adjacent first blades, and the ventilation gap is connected to the ventilation hole; the movable blade group includes a mounting bracket and a plurality of second blades arranged radially, a plurality of second blades are fixedly connected to the mounting bracket, the mounting bracket is rotatably mounted on the sealed wheel, and the movable blade group has at least a semi-closed position for opening the ventilation gap and a fully closed position for blocking the ventilation gap.

[0012] Furthermore, the cross-section sealing component also includes a ring beam, the wheel support ring is a circular ring, the ring beam is coaxially arranged with the wheel support ring, the inner circumference of the ring beam is provided with a guide groove, the end of each first blade away from its radiation starting point is inserted into the guide groove, and the end of each second blade away from its radiation starting point is inserted into the guide groove.

[0013] Furthermore, the ring beam and the wheel disc support ring are relatively fixedly arranged, and the mounting bracket is fixedly provided with an adjustment handle.

[0014] Furthermore, the enclosed wheel disc includes a mounting shaft fixedly arranged on the end face of the wheel disc support ring, the mounting shaft is located at the radiation starting point of multiple skeleton beams of the enclosed wheel disc, the mounting bracket is provided with a mounting hole, the mounting bracket is rotatably mounted on the mounting shaft through the mounting hole, and the mounting bracket can be fixed relative to the mounting shaft along the circumference of the mounting shaft.

[0015] The beneficial effects brought about by the tunnel sealing device of the present invention are:

[0016] A tunnel sealing device is provided which is mainly composed of a sealed wheel disc and a cross-section sealing component, wherein the sealed wheel disc includes a wheel disc support ring and a plastic capsule cavity, the plastic capsule cavity surrounds and fits to the outer circumference of the wheel disc support ring, and the interior of the plastic capsule cavity is provided with an inflation tube, a first bladder bag filled with a first expansion agent, and a second bladder bag filled with a second expansion agent, and the inflation tube, the first bladder bag and the second bladder bag are also arranged around the outer circumference of the wheel disc support ring; the cross-section sealing component is installed on the wheel disc support ring, and can close the ventilation hole arranged on the end face of the wheel disc support ring.

[0017] When a tunnel needs to be sealed, the sealing disc is first placed upright, parallel to the tunnel cross-section, at the tunnel location to be sealed. A cross-section sealing assembly is attached to the disc support ring, sealing the ventilation holes provided therein. Next, an inflation tube is used to inflate the plastic capsule cavity, increasing the pressure inside. When the capsule cavity reaches the set pressure, the first and second bladders rupture, allowing the first and second expansion agents to mix. The combined expansion of the first and second expansion agents expands the capsule cavity, allowing it to fill the gap between the disc support ring and the tunnel surrounding rock.

[0018] This tunnel sealing device utilizes the expansion effect of a mixture of a first and second expansion agent to compact the plastic capsule cavity and the surrounding rock of the tunnel, achieving a complete seal between the tunnel sealing device and the surrounding rock. This resolves the technical issue of existing tunnel sealing devices that cannot achieve a complete seal with the surrounding rock. Furthermore, this process eliminates the need for secondary sealing by spraying expansion material or pre-grooving the tunnel surrounding rock, thus simplifying the tunnel sealing process and improving its efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0020] Figure 1 A schematic structural diagram of a sealing wheel disc of a tunnel sealing device provided by an embodiment of the present invention;

[0021] Figure 2 A structural front view of the sealing wheel of the tunnel sealing device provided by an embodiment of the present invention when the plastic capsule cavity is in an expanded state;

[0022] Figure 3 A structural front view of a cross-section sealing assembly of a tunnel sealing device provided by an embodiment of the present invention when in a semi-closed position;

[0023] Figure 4 This is a structural front view of the cross-section sealing component of the tunnel sealing device provided by an embodiment of the present invention when it is in the fully closed position.

[0024] Description of reference numerals:

[0025] 100-sealed wheel; 200-section sealed assembly;

[0026] 110 - wheel support ring; 120 - plastic capsule cavity; 130 - first bladder bag; 140 - second bladder bag; 150 - inflation tube; 160 - ventilation hole; 170 - skeleton beam; 180 - mounting shaft;

[0027] 210 - first blade; 220 - second blade; 230 - ventilation gap; 240 - ring beam; 250 - adjustment handle. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0029] Figure 1 This is a schematic structural diagram of the sealed wheel disc 100 of the tunnel sealing device provided in this embodiment. Figure 2 This is a front view of the structure of the sealed wheel 100 of the tunnel sealing device provided in this embodiment when the plastic capsule cavity 120 is in the expanded state. Figure 1 and Figure 2 As shown, this embodiment provides a tunnel sealing device, including a sealed wheel disc 100 and a cross-section sealing assembly 200. Specifically, the sealed wheel disc 100 includes a wheel disc support ring 110 and a plastic capsule cavity 120 surrounding and attached to the outer periphery of the wheel disc support ring 110. A first bag 130, a second bag 140 and an inflation tube 150 are provided inside the plastic capsule cavity 120 and at various positions along the circumference of the wheel disc support ring 110. One end of the inflation tube 150 extends into the plastic capsule cavity 120, and the other end of the inflation tube 150 extends out of the plastic capsule cavity 120. The first bag 130 contains The first expansion agent and the second bladder 140 are filled with the second expansion agent. The inflation tube 150 is configured to inflate the plastic capsule cavity 120. The first bladder 130 and the second bladder 140 are both configured to rupture when the plastic capsule cavity 120 reaches a set pressure. The first expansion agent and the second expansion agent can expand in a mixed state to make the plastic capsule cavity 120 fill the gap between the wheel support ring 110 and the tunnel surrounding rock; the end face of the wheel support ring 110 is provided with a ventilation hole 160, and the cross-section sealing component 200 is installed on the wheel support ring 110, and the cross-section sealing component 200 can close the ventilation hole 160.

[0030] When a tunnel needs to be sealed, the sealing wheel 100 is first placed upright, parallel to the tunnel cross section, at the tunnel location to be sealed. The cross-section sealing assembly 200 is mounted on the wheel support ring 110, sealing the ventilation holes 160 provided therein. Next, the plastic capsule cavity 120 is inflated using the inflation tube 150, increasing the pressure within the plastic capsule cavity 120. When the plastic capsule cavity 120 reaches the set pressure, the first and second bladder bags 130, 140 rupture, allowing the first and second expansion agents to mix. The expansion of the mixed first and second expansion agents then expands the plastic capsule cavity 120, allowing it to fill the gap between the wheel support ring 110 and the tunnel surrounding rock.

[0031] This tunnel sealing device utilizes the expansion effect of the mixture of the first and second expansion agents to compact the plastic capsule cavity 120 and the surrounding rock of the tunnel, achieving a complete seal between the tunnel sealing device and the surrounding rock. This resolves the technical issue of existing tunnel sealing devices that cannot achieve a complete seal with the surrounding rock. Furthermore, the above process does not require the injection of expansion material for secondary sealing, nor does it require pre-grooving the surrounding rock of the tunnel. This simplifies the tunnel sealing process and improves tunnel sealing efficiency.

[0032] In this embodiment, the combination of the first expansion agent and the second expansion agent is an AB type rapid expansion agent. The principle of mixed expansion is an existing technology well known to those skilled in the art. This embodiment does not make any improvements thereto, so it will not be described in detail.

[0033] Preferably, in this embodiment, the plastic capsule cavity 120 includes a plurality of sub-cavities arranged circumferentially along the wheel support ring 110 , the plurality of sub-cavities are not interconnected, and each sub-cavity is provided with a first capsule bag 130 , a second capsule bag 140 and an inflation tube 150 .

[0034] By dividing the plastic capsule cavity 120 into multiple sub-cavities arranged along its circumference and not connected to each other, and arranging a first bag 130, a second bag 140 and an inflation tube 150 in each sub-cavity, when the tunnel needs to be sealed, multiple inflation tubes 150 inflate the corresponding sub-cavities, so that after each sub-cavity reaches the set pressure, the corresponding first bag 130 and second bag 140 will be burst, so that each sub-cavity is expanded by the mixed first expansion agent and second expansion agent, thereby achieving the purpose of compacting the plastic capsule cavity 120 and the surrounding rock around the tunnel.

[0035] Such an arrangement makes the expansion operation of each sub-capsule cavity independent of each other. On the one hand, the plastic capsule cavity 120 can be filled with the mixed first expansion agent and second expansion agent at each position along its circumference, avoiding the situation where the first expansion agent and the second expansion agent cannot locally act due to the filling area of ​​the plastic capsule cavity 120 being too large, so that the sealing quality of the tunnel surrounding rock is better. On the other hand, since the plastic capsule cavity 120 with a larger filling area is converted into a sub-capsule cavity with a smaller filling area, when the inflation tube 150 is inflated, the sub-capsule cavity can quickly reach the set pressure to cause the first bag 130 and the second bag 140 to rupture, thereby improving the expansion efficiency of the sub-capsule cavity, allowing the tunnel to be quickly sealed, and improving the tunnel sealing efficiency.

[0036] Specifically, in this embodiment, the plastic capsule cavity 120 is equally divided into eight sub-cavities along its circumference. That is, the central angles of the sub-cavities are the same. In other embodiments, the sub-cavities may be arranged in other numbers. In addition, it is understood that the central angles of the sub-cavities may also be different.

[0037] Please continue to refer to Figure 1 and Figure 2 In this embodiment, a plurality of skeleton beams 170 are fixedly provided on the end surface of the wheel support ring 110. The plurality of skeleton beams 170 are arranged radially. The plurality of skeleton beams 170 are configured to support the wheel support ring 110. The space between any two adjacent skeleton beams 170 forms the above-mentioned ventilation holes 160.

[0038] By fixing a plurality of skeleton beams 170 on the end face of the wheel support ring 110, not only can the structural strength of the wheel support ring 110 be improved, the deformation of the wheel support ring 110 generated during the tunnel sealing process can be reduced, thereby ensuring the tunnel sealing effect, but also ventilation holes 160 can be formed on the end face of the wheel support ring 110 to meet the ventilation needs of the tunnel.

[0039] Specifically, in this embodiment, the plastic capsule cavity 120 is adhesively fixed to the wheel support ring 110. This arrangement of fixing the plastic capsule cavity 120 to the wheel support ring 110 not only ensures reliable fixation of the plastic capsule cavity 120, but also is simple and easy to implement.

[0040] In this embodiment, the plastic capsule cavity 120 can be fixed to the wheel support ring 110 by using a strong adhesive.

[0041] Preferably, in this embodiment, the first pouch 130, the second pouch 140 and the inflation tube 150 are closely arranged inside the plastic capsule cavity 120. In other words, the first pouch 130, the second pouch 140 and the inflation tube 150 located in each sub-cavity are closely arranged.

[0042] By arranging the first bag 130, the second bag 140 and the inflation tube 150 closely, when the sub-cavity is inflated through the inflation tube 150, the inflation pressure can quickly increase the internal pressure of the sub-cavity, so that the first bag 130 and the second bag 140 can be quickly squeezed, thereby improving the mixing efficiency of the first expansion agent and the second expansion agent, thereby improving the sealing efficiency of the tunnel.

[0043] Specifically, in this embodiment, the cross-section sealing component 200 can adjust the opening of the ventilation hole 160 .

[0044] By providing a cross-sectional sealing component 200 capable of adjusting the opening of the ventilation hole 160, the opening of the ventilation hole 160 can be adjusted according to the current working conditions during actual use, so as to achieve the purpose of controlling the area of ​​the closed cross-section, and realize the sealing characteristics of the ventilation hole 160 in full, semi-closed or other open and closed states. Moreover, when unsealing, different cross-sectional areas can be unsealed step by step as needed, which meets the use requirements of the tunnel sealing device of this embodiment under various working conditions and has complete functions.

[0045] Figure 3 This is a front view of the structure of the cross-section sealing component 200 of the tunnel sealing device provided in this embodiment when it is in a semi-closed position. Figure 4 The structural front view of the cross-section sealing component 200 of the tunnel sealing device provided in this embodiment when it is in the fully closed position. Figure 3 and Figure 4 As shown, the cross-section sealing assembly 200 may include a fixed blade assembly and a movable blade assembly. Specifically, the fixed blade assembly is fixedly mounted on the wheel support ring 110 and includes a plurality of radially arranged first blades 210. A ventilation gap 230 is formed between any two adjacent first blades 210, wherein the ventilation gap 230 is connected to the ventilation hole 160. The movable blade assembly includes a mounting bracket and a plurality of radially arranged second blades 220. The plurality of second blades 220 are fixedly connected to the mounting bracket, which is rotatably mounted on the sealed wheel 100. The movable blade assembly has at least a semi-enclosed position in which the ventilation gap 230 is open and a fully enclosed position in which the ventilation gap 230 is blocked.

[0046] When the tunnel sealing device is in use, when the cross-section sealing component 200 is required to semi-close the ventilation hole 160, the mounting bracket can be rotated to rotate the second blade 220 to a position that overlaps with the first blade 210 (such as Figure 1As shown, at this time, the ventilation gap 230 formed between any two adjacent first blades 210 is in an open state, and the ventilation hole 160 is semi-closed. When the cross-section sealing assembly 200 needs to fully close the ventilation hole 160, the mounting bracket can be rotated to rotate the second blade 220 to a position opposite the ventilation gap 230, so that the second blade 220 can block the ventilation gap 230. At this time, the ventilation hole 160 on the end surface of the wheel support ring 110 is completely blocked by the alternating first blades 210 and second blades 220, and the ventilation hole 160 is fully closed. In addition, the mounting bracket can be rotated to position the second blade 220 in an intermediate position between the semi-closed position and the fully closed position, so that the ventilation hole 160 can be placed in other open and closed states between the semi-closed and fully closed positions.

[0047] This arrangement of the cross-section sealing component 200 can conveniently adjust the opening of the ventilation hole 160, so that the tunnel sealing device of this embodiment can meet the rapid adjustment requirements under various operating conditions.

[0048] Please continue to refer to Figure 3 and Figure 4 In this embodiment, the cross-section sealing component 200 may further include a ring beam 240. Specifically, the wheel support ring 110 is a circular ring, and the ring beam 240 is coaxially arranged with the wheel support ring 110. The inner circumference of the ring beam 240 is provided with a guide groove, and the end of each first blade 210 away from its radiation starting point is inserted into the guide groove, and the end of each second blade 220 away from its radiation starting point is inserted into the guide groove.

[0049] Such a setting has a reinforcing effect on the end of the first blade 210 away from its radiation starting point and the end of the second blade 220 away from its radiation starting point, effectively suppressing the deformation caused by the first blade 210 and the second blade 220. Moreover, this setting can also play a certain guiding role in the rotation process of the second blade 220, ensuring the smooth rotation of the second blade 220.

[0050] In other embodiments, the wheel support ring 110 may also have other shapes, such as rectangular or elliptical, as long as this configuration of the wheel support ring 110 can effectively compact the peripheral plastic capsule cavity 120 with the surrounding rock of the roadway. Furthermore, the cross-sectional area of ​​the wheel support ring 110 can be flexibly designed based on the actual contour area of ​​the roadway, and this example is not further illustrated in this embodiment.

[0051] In this embodiment, the ring beam 240 and the wheel support ring 110 are fixedly arranged relative to each other, and the mounting bracket is fixedly provided with an adjustment handle 250.

[0052] When the opening of the vent 160 needs to be adjusted, the operator only needs to rotate the adjustment handle 250 to rotate the mounting bracket, thereby rotating the second blade 220, and thus adjusting the opening of the vent 160. This arrangement eliminates the need to secure the ring beam 240 during the adjustment process, and the adjustment handle 250 provides a force point during the adjustment process, making the adjustment process more convenient and efficient.

[0053] Please continue to refer to Figure 1 and Figure 2 The enclosed wheel 100 includes a mounting shaft 180 arranged on the end surface of the wheel support ring 110. The mounting shaft 180 is located at the radiation starting point of multiple skeleton beams 170 of the enclosed wheel 100. The mounting bracket is provided with a mounting hole. The mounting bracket is rotatably mounted on the mounting shaft 180 through the mounting hole, and the mounting bracket can be fixed relative to the mounting shaft 180 along the circumference of the mounting shaft 180.

[0054] When the opening of the ventilation hole 160 needs to be adjusted, the mounting bracket is simply rotated to synchronize the second blade 220. When the second blade 220 is rotated to the desired position, the mounting bracket is stably fixed in that position. This arrangement allows the mounting bracket to be maintained in any position, preventing accidental unsealing during operation of the tunnel sealing device of this embodiment.

[0055] Specifically, a damping structure may be provided between the mounting hole of the mounting bracket and the mounting shaft 180 of the enclosed wheel 100 , so as to limit the rotational freedom of the mounting bracket relative to the enclosed wheel 100 .

[0056] In the above process, the cross-section sealing component 200 may also be pre-installed on the sealed wheel disc 100 before the sealed wheel disc 100 is erected in the tunnel.

[0057] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the scope defined by the claims.

[0058] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0059] In the above embodiments, the descriptions of directions such as “inside”, “outside”, and “side” are all based on the drawings.

[0060] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tunnel sealing device, characterized in that: The invention comprises a sealed wheel (100) and a cross-section sealed component (200), wherein the sealed wheel (100) comprises a wheel support ring (110) and a plastic capsule cavity (120) surrounding and attached to the outer periphery of the wheel support ring (110), wherein a first bag (130), a second bag (140) and an inflation tube (150) are provided inside the plastic capsule cavity (120) and at various positions along the circumference of the wheel support ring (110), wherein the first bag (130), the second bag (140) and the inflation tube (150) are closely arranged inside the plastic capsule cavity (120), wherein one end of the inflation tube (150) extends into the plastic capsule cavity (120), and the other end of the inflation tube (150) extends out of the plastic capsule cavity (120), wherein the first bag (130) ) is filled with a first expansion agent, the second bladder (140) is filled with a second expansion agent, the inflation tube (150) is configured to inflate the plastic capsule cavity (120) to increase the pressure inside the plastic capsule cavity (120), the first bladder (130) and the second bladder (140) are both configured to rupture when the plastic capsule cavity (120) reaches a set pressure, the first expansion agent and the second expansion agent can expand in a mixed state to make the plastic capsule cavity (120) fill the gap between the wheel support ring (110) and the tunnel surrounding rock; the end face of the wheel support ring (110) is provided with a ventilation hole (160), the cross-section sealing component (200) is installed on the wheel support ring (110), and the cross-section sealing component (200) can close the ventilation hole (160).

2. The tunnel sealing device according to claim 1, characterized in that: The plastic capsule cavity (120) includes a plurality of sub-capsule cavities arranged along the circumference of the wheel support ring (110), the plurality of sub-capsule cavities are not interconnected, and each sub-capsule cavity is provided with the first capsule bag (130), the second capsule bag (140) and the inflation tube (150).

3. The tunnel sealing device according to claim 1, characterized in that: A plurality of skeleton beams (170) are fixedly provided on the end surface of the wheel disc support ring (110), the plurality of skeleton beams (170) are arranged in a radial shape, the plurality of skeleton beams (170) are configured to support the wheel disc support ring (110), and the space between any two adjacent skeleton beams (170) forms the ventilation hole (160).

4. The tunnel sealing device according to claim 1, characterized in that: The plastic capsule cavity (120) is bonded and fixed to the wheel disc support ring (110).

5. The tunnel sealing device according to any one of claims 1 to 4, characterized in that: The cross-section sealing component (200) is capable of adjusting the opening of the ventilation hole (160).

6. The tunnel sealing device according to claim 5, characterized in that: The cross-section sealing component (200) includes a fixed blade group and a movable blade group, wherein the fixed blade group is fixedly arranged on the wheel support ring (110), the fixed blade group includes a plurality of first blades (210) arranged in a radial pattern, a ventilation gap (230) is formed between any two adjacent first blades (210), and the ventilation gap (230) is communicated with the ventilation hole (160); the movable blade group includes a mounting bracket and a plurality of second blades (220) arranged in a radial pattern, the plurality of second blades (220) are fixedly connected to the mounting bracket, and the mounting bracket is rotatably mounted on the sealed wheel (100), and the movable blade group has at least a semi-closed position for opening the ventilation gap (230) and a fully closed position for blocking the ventilation gap (230).

7. The tunnel sealing device according to claim 6, characterized in that: The cross-section sealing component (200) further includes a ring beam (240), the wheel disc support ring (110) is a circular ring, the ring beam (240) is coaxially arranged with the wheel disc support ring (110), and the inner circumferential surface of the ring beam (240) is provided with a guide groove, and the end of each first blade (210) away from the radiation starting point is plugged into the guide groove, and the end of each second blade (220) away from the radiation starting point is plugged into the guide groove.

8. The tunnel sealing device according to claim 7, characterized in that: The ring beam (240) and the wheel disc support ring (110) are relatively fixedly arranged, and the mounting bracket is fixedly provided with an adjustment handle (250).

9. The tunnel sealing device according to claim 6, characterized in that: The enclosed wheel disc (100) includes a mounting shaft (180) fixedly arranged on the end surface of the wheel disc support ring (110), the mounting shaft (180) is located at the radiation starting point of multiple skeleton beams (170) of the enclosed wheel disc (100), the mounting bracket is provided with a mounting hole, the mounting bracket is rotatably mounted on the mounting shaft (180) through the mounting hole, and the mounting bracket can be fixed relative to the mounting shaft (180) along the circumference of the mounting shaft (180).

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