A flexible emergency closing device for a tunnel and its preparation method

Abstract

An embodiment of the present invention discloses a flexible tunnel emergency closing device and a preparation method thereof. In the device, the load-bearing column and the outer ring are integrally of a double-layer cylindrical structure, and the outer ring is integrally wrapped outside the load-bearing column; the front and rear plugs are respectively assembled at both ends of the double-layer cylindrical structure formed by the load-bearing column and the outer ring to form a cylindrical load-bearing column cavity and an annular outer ring cavity; a plurality of air column holes are arranged on the column surface of the outer ring along the circumferential and axial directions, one sealing air column is installed on each air column hole, and all the sealing air columns communicate with the annular outer ring cavity; two air charging and discharging ports are assembled on the front plug, which are respectively located at the plug positions at the ends of the load-bearing column cavity and the annular outer ring cavity. The technical solution provided by the embodiment of the present invention solves the technical problems that existing tunnel closing devices are mostly large-scale equipment with high costs, it is difficult to achieve large-scale coverage, there are certain difficulties in transportation and transfer, and it is impossible to timely and effectively close the problem area, etc.

Description

Technical Field

[0001] The present invention relates to, but is not limited to, the technical field of emergency closure of underground tunnels, and particularly to a flexible tunnel emergency closure device and a preparation method thereof. Background Art

[0002] In coal mines and other mines, due to the unpredictability of the underground environment, sudden situations such as gas leakage and water inrush may occur at any time, causing immeasurable losses to the operating personnel and equipment in the tunnel.

[0003] Most of the existing tunnel closure devices are large-scale equipment, with a relatively high cost for the whole set of equipment. It is difficult to achieve wide coverage, and there are certain difficulties in transportation and transshipment, etc., and it is impossible to timely and effectively close the problem area. In addition, in order to ensure the strength of the tunnel during normal use, the interior of the underground tunnel is filled with metal structures such as steel bars of different lengths, which further increases the difficulty of tunnel sealing. Summary of the Invention

[0004] Object of the present invention: Embodiments of the present invention provide a flexible tunnel emergency closure device and a preparation method thereof to solve the technical problems that most of the existing tunnel closure devices are large-scale equipment with relatively high costs, it is difficult to achieve wide coverage, there are certain difficulties in transportation and transshipment, etc., and it is impossible to timely and effectively close the problem area.

[0005] Technical solution of the present invention: Embodiments of the present invention provide a flexible tunnel emergency closure device and a preparation method thereof, including:

[0006] Step 1, obtaining various cut pieces for preparing the flexible tunnel emergency closure device through cutting;

[0007] Step 2, splicing the load-bearing column cut pieces into a whole square load-bearing column integral cut piece by means of heat sealing or gluing;

[0008] Step 3, splicing the outer ring cut pieces into a whole square outer ring integral cut piece by means of heat sealing or gluing, and arranging a plurality of air column holes along the circumferential and axial directions on the formed outer ring integral cut piece;

[0009] Step 4, making the sealed air column cut pieces into hollow cylinders by means of heat sealing or gluing, and one end of the sealed air column is an open end and the other end is a closed end;

[0010] Step 5, assembling the sealed air columns formed in Step 4 one by one onto the air column holes of the outer ring integral cut piece by means of heat sealing or gluing;

[0011] Step 6, assembling the load-bearing column integral cut piece with the front and rear plug cut pieces respectively by means of heat sealing or gluing;

[0012] Step 7: Seal the overall cut piece of the load-bearing column with the front and rear plug cut pieces assembled at both ends by heat sealing or gluing to prepare a load-bearing column with a cylindrical structure. The two ends of the load-bearing column form a sealed cavity through the front and rear plugs.

[0013] Step 8: Install air charging and discharging ports at the plug positions of the load-bearing column.

[0014] Step 9: Assemble the overall cut piece of the outer ring with the front and rear plug cut pieces respectively by heat sealing or gluing.

[0015] Step 10: Seal the overall cut piece of the outer ring by heat sealing or gluing to form an outer ring sealed at both ends by the front and rear plugs. The overall outer ring wraps around the outside of the load-bearing column and forms an annular sealed cavity between the front and rear plugs and the load-bearing column.

[0016] Step 11: Install air charging and discharging ports on the end faces of the annular sealed cavity of the outer ring.

[0017] Optionally, in the preparation method of the flexible tunnel emergency closure device as described above,

[0018] The cut pieces cut out in Step 1 include: load-bearing column cut pieces, outer ring cut pieces, sealed air column cut pieces, front plug cut pieces, and rear plug cut pieces.

[0019] Optionally, in the preparation method of the flexible tunnel emergency closure device as described above,

[0020] The overall cut pieces of the load-bearing column and the overall cut pieces of the outer ring have the same cut piece size for forming the column height of the closure device. Among the cut piece sizes for forming the circumferences of the radial cross-sections of the closure device column, the length of the overall cut piece of the load-bearing column is less than the length of the overall cut piece of the outer ring.

[0021] Optionally, in the preparation method of the flexible tunnel emergency closure device as described above,

[0022] The cut pieces cut out in Step 1 further include: T-shaped part cut pieces.

[0023] Optionally, before Step 4 in the preparation method of the flexible tunnel emergency closure device as described above, it further includes:

[0024] Step a: Assemble the T-shaped part cut pieces on the front and rear plug cut pieces by heat sealing or gluing. The assembly positions of the T-shaped part cut pieces are: the positions where the front and rear plug cut pieces are assembled with the overall cut piece of the load-bearing column, and the positions where the front and rear plug cut pieces are assembled with the overall cut piece of the outer ring.

[0025] Optionally, in the preparation method of the flexible tunnel emergency closure device as described above,

[0026] In step 6, the front and rear plug pieces are respectively assembled to both ends of the integral load-bearing column piece through the T-shaped pieces assembled on the front and rear plug pieces.

[0027] In step 9, the front and rear plug pieces are respectively assembled to both ends of the outer ring integral piece through the T-shaped pieces assembled on the peripheral edges of the front and rear plug pieces.

[0028] Optionally, in the preparation method of the flexible tunnel emergency sealing device as described above, step 5 specifically includes:

[0029] By assembling T-shaped pieces around the installation position of the sealing air column, the sealing air column and the air column holes of the outer ring integral piece are assembled into one body through the T-shaped pieces.

[0030] An embodiment of the present invention further provides a flexible tunnel emergency sealing device, which is a flexible tunnel emergency sealing device prepared by using the preparation method of the flexible tunnel emergency sealing device as described in any one of the above. The flexible tunnel emergency sealing device includes: a load-bearing column (1), an outer ring (2), a sealing air column (4), front and rear plugs (5), and an air charging and discharging port (6);

[0031] Among them, the load-bearing column (1) and the outer ring (2) are integrally arranged as a double-layer cylindrical structure with the same height, and the outer ring (2) is integrally wrapped outside the load-bearing column (1); the front and rear plugs (5) are respectively assembled at both ends of the double-layer cylindrical structure formed by the load-bearing column (1) and the outer ring (2). A cylindrical load-bearing column cavity is formed by the load-bearing column (1) and the front and rear plugs (5), and an annular outer ring cavity located outside the load-bearing column cavity is formed by the outer ring (2), the load-bearing column (1), and the front and rear plugs (5);

[0032] A plurality of air column holes are arranged on the column surface of the outer ring (2) along the circumferential and axial directions. One sealing air column (4) is installed on each air column hole, and all the sealing air columns (4) communicate with the annular outer ring cavity;

[0033] Two air charging and discharging ports (6) are assembled on the front plug (5), which are respectively located at the plug positions at the ends of the load-bearing column cavity and the annular outer ring cavity.

[0034] Optionally, in the flexible tunnel emergency sealing device as described above, it further includes: a T-shaped piece (3);

[0035] The positions where the load-bearing column (1) is respectively adhesively bonded to the front and rear plugs (5), the positions where the outer ring (2) is respectively adhesively bonded to the front and rear plugs (5), and the positions where each sealing air column (4) is adhesively bonded to the corresponding air column hole on the outer ring (2) are adhesively bonded by assembling the T-shaped piece (3).

[0036] Advantages of the present invention: The embodiments of the present invention provide a flexible tunnel emergency closing device and a preparation method thereof. The flexible tunnel emergency closing device prepared by using this preparation method is specifically a foldable inflatable tunnel closing device, which realizes the emergency closing of the tunnel. The present invention closes the tunnel by inflating the device to block the tunnel, so as to gain time for rescue and reduce the losses of personnel and equipment. The technical solutions of the embodiments of the present invention have the following advantages:

[0037] 1) It has the advantages of simple structure, light weight, convenient transportation and quick arrival;

[0038] The main body of the flexible tunnel emergency closing device provided by the technical solution of the present invention is an inflatable cylindrical structure with a simple appearance; it is made of a light flexible composite material, and generally weighs no more than 200 kg; it can be folded into a smaller size, which is convenient for transfer and storage in the tunnel, and can reach the designated position in the first time after an emergency occurs to complete the tunnel closing work; further, to ensure the sealing effect, the size of the flexible tunnel emergency closing device prepared by the present invention can be configured according to the actual use conditions. For tunnels of different sizes, the prepared flexible tunnel emergency closing devices usually form different product sizes; generally, the diameter of the device is slightly larger than the diameter of the tunnel.

[0039] 2) The operation of the flexible tunnel emergency closing device in actual use is simple;

[0040] The device is transported to the designated area by a transfer device, unfolded and laid on the ground, and inflated into the inner and outer layers of the device by a blower or the like until the device is completely filled and the tunnel is filled. Foam glue or the like is used to seal the corner positions to achieve the complete closing of the tunnel. Description of the Drawings

[0041] The drawings are used to provide a further understanding of the technical solutions of the present invention, and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solutions of the present invention, and do not constitute a limitation to the technical solutions of the present invention.

[0042] Figure 1 It is a schematic structural diagram of a flexible tunnel emergency closing device provided by an embodiment of the present invention.

[0043] Description of the reference numerals in the drawings:

[0044] 1 - Bearing column;

[0045] 2 - Outer ring;

[0046] 3 - T-shaped part;

[0047] 4 - Sealing air column;

[0048] 5 - Front and rear plugs;

[0049] 6 - Inflation and deflation port. Specific implementation mode

[0050] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined arbitrarily with each other.

[0051] As described in the above background art, most of the existing tunnel closing devices are large-scale equipment, and the cost of the complete set of equipment is relatively high. It is difficult to achieve large-scale coverage, and there are certain difficulties in transportation, transshipment, etc., and it is impossible to close the problem area in a timely and effective manner. In addition, when an underground tunnel is generally in use, in order to ensure the strength of the tunnel, it is filled with metal structures such as steel bars of different lengths, which further increases the difficulty of tunnel sealing.

[0052] In view of the various problems existing in the above-mentioned existing tunnel closing devices, the embodiments of the present invention provide a flexible tunnel emergency closing device and a preparation method thereof. The proposed flexible tunnel emergency closing device is a foldable inflatable tunnel closing device, which is used to quickly realize the emergency closing of the tunnel.

[0053] The present invention provides the following several specific embodiments that can be combined with each other. For the same or similar concepts or processes, they may not be repeated in some embodiments.

[0054] In the first aspect, the embodiments of the present invention first propose a preparation method for a flexible tunnel emergency closing device, including the following preparation steps:

[0055] Step 1, various cut pieces for preparing the flexible tunnel emergency closing device are obtained by cutting.

[0056] In this step, the cut pieces cut out include: load-bearing column cut pieces, outer ring cut pieces, sealed air column cut pieces, and plug cut pieces.

[0057] Step 2, the load-bearing column cut pieces are spliced into a whole square load-bearing column integral cut piece by means of heat sealing or gluing.

[0058] Step 3, the outer ring cut pieces are spliced into a whole square outer ring integral cut piece by means of heat sealing or gluing. A plurality of air column holes are arranged on the formed outer ring integral cut piece in the circumferential and axial directions.

[0059] It should be noted that in the embodiments of the present invention, the load-bearing column integral cut piece and the outer ring integral cut piece can be curled to form a column body. The cut piece sizes (for example, the width of the integral cut piece) for forming the column height of the closing device of the load-bearing column integral cut piece and the outer ring integral cut piece are the same; among the cut piece sizes (for example, the length of the integral cut piece) for forming the circumferential length of the radial cross-section of the column body of the closing device, the length of the load-bearing column integral cut piece is less than the length of the outer ring integral cut piece.

[0060] Step 4: The sealed air column cut pieces are made into a hollow cylindrical sealed air column by heat sealing or gluing, and one end of the sealed air column is an open end and the other end is a closed end.

[0061] Step 5: The sealed air columns formed in Step 4 are assembled one by one on the air column holes of the overall outer ring cut piece by heat sealing or gluing.

[0062] Step 6: The two ends of the overall load-bearing column cut piece are respectively assembled with the front and rear plug cut pieces by heat sealing or gluing.

[0063] Step 7: The overall load-bearing column cut piece with the front and rear plug cut pieces assembled at both ends is sealed by heat sealing or gluing to prepare a load-bearing column in a cylindrical structure, and sealed cavities are formed at both ends of the load-bearing column through the front and rear plugs.

[0064] In this step, the outer peripheral edges of the front and rear plug cut pieces at both ends of the prepared load-bearing column protrude from the outer peripheral edge of the load-bearing column surface as a whole, which is used for the outer peripheral edges of the front and rear plug cut pieces to be assembled with the overall outer ring cut piece in the subsequent steps.

[0065] Step 8: An air charging and discharging port is installed on the end face of the load-bearing column formed in Step 7;

[0066] In this step, the air charging and discharging port is actually installed at the position of the front plug of the load-bearing column.

[0067] Step 9: The overall outer ring cut piece is respectively assembled with the front and rear plug cut pieces by heat sealing or gluing;

[0068] In this step, specifically, the outer peripheral edges of the front and rear plugs protruding from the load-bearing column after being assembled in Step 7 are assembled with the overall outer ring cut piece.

[0069] Step 10: The overall outer ring cut piece is sealed by heat sealing or gluing to form an outer ring sealed at both ends by the front and rear plugs. The overall outer ring wraps around the outside of the load-bearing column and forms an annular sealed cavity between the front and rear plugs and the load-bearing column;

[0070] Step 11: An air charging and discharging port is installed on the end face of the annular sealed cavity of the outer ring.

[0071] In an implementation manner of the embodiment of the present invention, the cut pieces cut out in Step 1 further include: T-shaped part cut pieces.

[0072] In this implementation manner, before Step 4, it further includes:

[0073] Adopt a heat-sealing or gluing method to assemble the T-piece cut pieces on the front and rear plug cut pieces. The assembly positions of the T-piece cut pieces are: the positions where the front and rear plug cut pieces are assembled with the integral cut piece of the load-bearing column, and the positions where the front and rear plug cut pieces are assembled with the integral cut piece of the outer ring.

[0074] Correspondingly, in step 6, specifically through the T-piece cut pieces assembled on the front and rear plug cut pieces, the front and rear plug cut pieces are respectively assembled to both ends of the integral cut piece of the load-bearing column;

[0075] In step 9, specifically through the T-piece cut pieces assembled on the peripheral edges of the front and rear plug cut pieces, the front and rear plug cut pieces are respectively assembled to both ends of the integral cut piece of the outer ring.

[0076] Based on a similar assembly method, in step 5, specifically by assembling T-piece cut pieces around the installation position of the sealing air column, the sealing air column and the air column hole of the integral cut piece of the outer ring are assembled into one body through the T-piece cut pieces.

[0077] In this implementation method, considering the assembly of the front and rear cut pieces with the integral cut piece of the load-bearing column, the assembly of the front and rear cut pieces with the integral cut piece of the outer ring, and the assembly of the sealing air column with the air column hole on the integral cut piece of the outer ring are all in the form of line contact. By using T-piece cut pieces for assembly, specifically with the symmetry axis of the T-piece as the division, the two regions are respectively assembled on the structures on both sides of the line contact position, converting the line contact assembly form into a surface contact assembly form, thereby improving the reliability of the overall structure assembly.

[0078] In a second aspect, based on the preparation method of the flexible tunnel emergency closure device provided in the above embodiments of the present invention, the embodiments of the present invention further provide a flexible tunnel emergency closure device, and this flexible tunnel emergency closure device is prepared by using the preparation method of the flexible tunnel emergency closure device of the present invention as described above.

[0079] Figure 1 It is a schematic structural diagram of the flexible tunnel emergency closure device provided by the embodiments of the present invention. The main structures of this flexible tunnel emergency closure device include: a load-bearing column (1), an outer ring (2), a sealing air column (4), front and rear plugs (5), and an air inlet / outlet (6);

[0080] As Figure 1 In the structure of the flexible tunnel emergency closure device shown, the load-bearing column (1) and the outer ring (2) are integrally set as a double-layer cylindrical structure with the same height, and the outer ring (2) is integrally wrapped outside the load-bearing column (1); the front and rear plugs (5) are respectively assembled at both ends of the double-layer cylindrical structure formed by the load-bearing column (1) and the outer ring (2), a cylindrical load-bearing column cavity is formed by the load-bearing column (1) and the front and rear plugs (5), and an annular outer ring cavity located outside the load-bearing column cavity is formed by the outer ring (2), the load-bearing column (1), and the front and rear plugs (5).

[0081] In the embodiment of the present invention, a plurality of air column holes are arranged on the cylindrical surface of the outer ring (2) along the circumferential and axial directions. One sealing air column (4) is installed on each air column hole, and all the sealing air columns (4) communicate with the annular outer ring cavity. Two air charging and discharging ports (6) are assembled on the front plug (5), which are respectively located at the plug positions at the ends of the bearing column cavity and the annular outer ring cavity.

[0082] In one implementation manner of the embodiment of the present invention, as Figure 1 shown, the flexible tunnel emergency closing device may further include: a plurality of T-shaped members (3).

[0083] In this implementation manner, at the positions where the bearing columns (1) are adhesively bonded to the front and rear plugs (5) respectively, the positions where the outer rings (2) are adhesively bonded to the front and rear plugs (5) respectively, and the positions where each sealing air column (4) is adhesively bonded to the corresponding air column hole on the outer ring (2), the T-shaped members (3) are assembled for adhesive bonding, so as to convert the line contact assembly form into a surface contact assembly form, improving the reliability of product assembly. In addition, the air charging and discharging ports (6) in the embodiment of the present invention can be finished parts.

[0084] The flexible tunnel emergency closing device prepared by the preparation method of the embodiment of the present invention can be applied to actual scenarios such as underground mineral mining in coal mines and tunnel rescue. It should be noted that in the embodiment of the present invention, the diameters of the bearing columns and the outer rings need to be processed in combination with the actual diameter of the tunnel, and the length and diameter of the bearing columns are processed in a ratio of 1:1.

[0085] In addition, the usage mode of the flexible tunnel emergency closing device provided in the embodiment of the present invention is as follows:

[0086] 1) Transport the flexible tunnel emergency closing device to the designated area through a transfer device and unfold it in the indicated direction;

[0087] 2) Open the air charging and discharging port of the bearing column, and use equipment such as a blower to inflate the bearing column to the formed state and then stop inflation;

[0088] 3) Open the air charging and discharging port of the outer ring, and use equipment such as a blower to inflate the outer ring to the state where the whole device is closely attached to the tunnel, and then close the air charging and discharging port; it should be noted that during the inflation process of the outer ring, the sealing air columns installed on the outer ring can penetrate into metal structures such as steel bars in the tunnel, enhancing the contact surface between the whole device and the tunnel;

[0089] 4) Use foaming products such as polyurethane foam glue to seal the joints between the flexible tunnel emergency closing device and the tunnel wall or the joints between the flexible tunnel emergency closing device and the steel bars in the tunnel.

[0090] The embodiments of the present invention provide a flexible tunnel emergency sealing device and a preparation method thereof. The flexible tunnel emergency sealing device prepared by using this preparation method is specifically a foldable inflatable tunnel sealing device, which realizes the emergency sealing of the tunnel. The present invention achieves the purpose of tunnel sealing by inflating the device to block the tunnel, so as to gain time for rescue and reduce the losses of personnel and equipment. The technical solutions of the embodiments of the present invention have the following beneficial effects:

[0091] 1) It has the advantages of simple structure, light weight, convenient transportation and quick arrival;

[0092] The main body of the flexible tunnel emergency sealing device provided by the technical solution of the present invention is an inflatable cylindrical structure with a simple appearance; it is made of a lightweight flexible composite material, and generally weighs no more than 200 kg; it can be folded into a smaller size, which is convenient for transportation and storage in the tunnel, and can reach the designated position in the first time after an emergency occurs to complete the tunnel sealing work; further, to ensure the sealing effect, the size of the flexible tunnel emergency sealing device prepared by the present invention can be configured according to the actual use conditions. For tunnels of different sizes, the prepared flexible tunnel emergency sealing devices usually form different product sizes; generally, the diameter of the device is slightly larger than the diameter of the tunnel.

[0093] 2) The operation of the flexible tunnel emergency sealing device in actual use is simple;

[0094] The device is transported to the designated area by a transportation device, unfolded and laid on the ground, and inflated into the inner and outer layers of the device by a blower or the like until the device is completely filled and fills the tunnel, and the corner positions are sealed with foam glue or the like to achieve the complete sealing of the tunnel.

[0095] Although the disclosed embodiments of the present invention are as above, the content is only the embodiments adopted for the convenience of understanding the present invention and is not used to limit the present invention. Any person skilled in the art within the scope of the present invention can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed by the present invention. However, the scope of patent protection of the present invention shall still be subject to the scope defined by the appended claims.

Claims

1. A preparation method of a flexible emergency closing device for a tunnel, characterized in that, Including: Step 1: Obtain various cut pieces for preparing the flexible tunnel emergency sealing device by cutting; Step 2: Adopt heat sealing or gluing to splice the load-bearing column cut pieces into a whole square load-bearing column integral cut piece; Step 3: Adopt heat sealing or gluing to splice the outer ring cut pieces into a whole square outer ring integral cut piece, and a plurality of air column holes are arranged circumferentially and axially on the formed outer ring integral cut piece; Step 4: Adopt heat sealing or gluing to make the sealed air column cut piece into a hollow cylinder, and one end of the sealed air column is an open end and one end is a closed end; Step 5: Adopt heat sealing or gluing to assemble the sealed air columns formed in Step 4 onto the air column holes of the outer ring integral cut piece one by one; Step 6: Adopt heat sealing or gluing to assemble the load-bearing column integral cut piece with the front plug cut piece and the rear plug cut piece respectively; Step 7: Adopt heat sealing or gluing to seal the load-bearing column integral cut piece with the front plug cut piece and the rear plug cut piece assembled at both ends respectively to prepare a load-bearing column with a cylindrical structure, and sealed cavities are formed at both ends of the load-bearing column through the front and rear plugs; Step 8: Install an air charging and discharging port at the plug position of the load-bearing column; Step 9: Adopt heat sealing or gluing to assemble the outer ring integral cut piece with the front plug cut piece and the rear plug cut piece respectively; Step 10: Adopt heat sealing or gluing to seal the outer ring integral cut piece to form an outer ring sealed at both ends by the front and rear plugs. The outer ring integral is wrapped outside the load-bearing column and a circumferential sealed cavity is formed between the outer ring integral and the load-bearing column through the front and rear plugs; Step 11: Install an air charging and discharging port on the end face of the circumferential sealed cavity of the outer ring; Among them, the cut pieces cut out in Step 1 include: load-bearing column cut pieces, outer ring cut pieces, sealed air column cut pieces, front plug cut pieces, rear plug cut pieces and T-shaped part cut pieces; Before Step 4, it further includes: Step a: Adopt heat sealing or gluing to assemble the T-shaped part cut pieces on the front plug cut piece and the rear plug cut piece. The assembly positions of the T-shaped part cut pieces are: the positions where the front plug cut piece and the rear plug cut piece are assembled with the load-bearing column integral cut piece, and the positions where the front plug cut piece and the rear plug cut piece are assembled with the outer ring integral cut piece; In Step 6, the front plug cut piece and the rear plug cut piece are respectively assembled to both ends of the load-bearing column integral cut piece through the T-shaped part cut pieces assembled on the front plug cut piece and the rear plug cut piece; In Step 9, the front plug cut piece and the rear plug cut piece are respectively assembled to both ends of the outer ring integral cut piece through the T-shaped part cut pieces assembled on the circumferential edges of the front plug cut piece and the rear plug cut piece; 2. The preparation method of the flexible tunnel emergency sealing device according to claim 1, wherein The cut piece sizes of the load-bearing column integral cut piece and the outer ring integral cut piece for forming the column height of the sealing device are the same. Among the cut piece sizes for forming the circumferential length of the radial cross-section of the column of the sealing device, the length of the load-bearing column integral cut piece is less than the length of the outer ring integral cut piece; 3. The preparation method of the flexible tunnel emergency sealing device according to claim 1, characterized in that, The specific content of Step 5 includes: By assembling T-shaped part cut pieces around the installation position of the sealed air column, the sealed air column and the air column holes of the outer ring integral cut piece are assembled into one body through the T-shaped part cut pieces.

4. A flexible emergency closing device for a tunnel, characterized in that, The flexible tunnel emergency sealing device prepared by the preparation method of the flexible tunnel emergency sealing device according to any one of claims 1 to 3, wherein the flexible tunnel emergency sealing device comprises: a load-bearing column (1), an outer ring (2), a sealing air column (4), a front plug, a rear plug and an air charging / discharging port (6); Wherein, the load-bearing column (1) and the outer ring (2) are integrally arranged in a double-layer cylindrical structure with the same height, and the outer ring (2) is integrally wrapped outside the load-bearing column (1); the front plug and the rear plug are respectively assembled at both ends of the double-layer cylindrical structure formed by the load-bearing column (1) and the outer ring (2), a cylindrical load-bearing column cavity is formed by the load-bearing column (1), the front plug and the rear plug, and an annular outer ring cavity located outside the load-bearing column cavity is formed by the outer ring (2), the load-bearing column (1), the front plug and the rear plug; A plurality of air column holes are arranged on the column surface of the outer ring (2) along the circumferential and axial directions, one sealing air column (4) is installed on each air column hole, and all the sealing air columns (4) communicate with the annular outer ring cavity; Two air charging / discharging ports (6) are assembled on the front plug, respectively located at the positions of the front plug at the end of the load-bearing column cavity and the end of the annular outer ring cavity.

5. The flexible tunnel emergency sealing device according to claim 4, characterized in that, It further comprises: A T-shaped part (3); At the positions where the load-bearing column (1) is adhesively bonded to the front plug and the rear plug respectively, at the positions where the outer ring (2) is adhesively bonded to the front plug and the rear plug respectively, and at the positions where each sealing air column (4) is adhesively bonded to the corresponding air column hole on the outer ring (2), the adhesive bonding is carried out by assembling the T-shaped part (3).

Images