Tunnel operation safety monitoring protection device

Abstract

The invention relates to the field of tunnel safety, in particular to a tunnel operation safety monitoring and protecting device which comprises a moving seat, a support is fixedly connected to the top end of the moving seat, a supporting assembly is installed at the top end of the support, a leaking stoppage assembly is installed in the supporting assembly, and an air dispersing assembly is installed in the supporting assembly. According to the device, the supporting assembly is arranged, a first electric push rod works, the movable end of the first electric push rod starts to extend, so that the mounting plate is driven to start to ascend until the supporting plate makes contact with the top of the tunnel, the top of the tunnel is supported, and collapse of the top wall of the tunnel in the leakage process of the high-pressure gas well is avoided; the contact area with the tunnel top is increased, and the supporting effect is improved; the leakage position is supported, on one hand, preliminary leakage stopping operation is conducted through the supporting plate, on the other hand, in the leakage stopping operation process, the situation that the top of the tunnel collapses during leakage stopping operation is avoided, and safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel safety, and in particular to a tunnel operation safety monitoring and protection device. Background Art

[0002] The monitoring targets of the tunnel safety monitoring system mainly include the health status of the tunnel structure, changes in environmental parameters, and emergency event warnings. Through real-time monitoring and intelligent analysis of these parameters, and in conjunction with protective devices, potential safety hazards can be eliminated in a timely manner to ensure the safety of tunnel construction and operation.

[0003] For example, announcement number CN220551161U proposes a tunnel construction safety monitoring device, which relates to the field of tunnel construction protection technology; it solves the problem that the existing tunnel construction safety monitoring device does not have an adjustable collapse monitoring structure and the equipment is unsafe to use inside the tunnel; it includes a detection support; four support positioning adjustment parts are fixedly connected to the detection support; a top fitting part is slidably connected to the detection support; a monitoring device is threadedly connected to the detection support; a control alarm component is fixedly connected to the bottom of the detection support; four support mounting legs are fixedly connected to the detection support plate; the overall structural monitoring quality is effectively guaranteed, and an alarm can be quickly issued in the event of an accident such as collapse. The set monitoring device can raise and lower the detection range by rotating the detection lifting and mounting screw, which is more practical and has a mature and reliable structure.

[0004] At present, in tunnel excavation projects, there are high-pressure gas wells around the tunnel, which will pose a serious threat to the safe construction of the tunnel. If the high-pressure gas well leaks, it will cause collapse above the tunnel if it is not supported in time. In addition, if the high-pressure gas well leaks, it will take some time from the leak to the staff to plug the leak. At this time, the high-pressure gas well has already leaked, and the plugging operation has not been carried out immediately. Moreover, the high-pressure gas in the high-pressure gas well often contains CO, H 2 Once toxic and harmful gases such as S leak into the tunnel space along the cracks, if the toxic gases around the leakage are not blown away in time, it will threaten the lives of workers in the tunnel and pose a safety hazard.

[0005] In view of the above problems, a tunnel operation safety monitoring and protection device is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a tunnel operation safety monitoring and protection device. By using this device to work, the problem of leakage of the high-pressure gas well in the above background, if it is not supported in time, severe collapse of the tunnel may occur. In addition, when the high-pressure gas well has leaked, it has not been able to immediately carry out the leak plugging operation. If the toxic gas around the leak is not blown away in time, it will threaten the life safety of the workers in the tunnel.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a tunnel operation safety monitoring and protection device, comprising a movable seat, a bracket fixedly connected to the top of the movable seat, a support assembly installed on the top of the bracket, a leak plugging assembly installed inside the support assembly, and a gas dispersion assembly installed inside the support assembly.

[0008] Furthermore, the support assembly includes a plurality of first electric push rods, each of which is fixedly connected to the top of the bracket, the movable ends of the plurality of first electric push rods are commonly fixedly connected to a mounting plate, the top of the mounting plate is symmetrically fixedly connected to telescopic rods, and the movable ends of the plurality of telescopic rods are commonly fixedly connected to a stabilizing frame.

[0009] Furthermore, the top of the mounting plate is symmetrically fixedly connected with a first spring, one end of each of the first springs is fixedly connected to the bottom end of the stabilizing frame, and are all sleeved on the outer side walls of adjacent telescopic rods, and the top of the stabilizing frame is fixedly connected with a support plate, and the support plate is an arc-shaped structure.

[0010] Furthermore, the leak-plugging assembly includes a cavity, which is opened inside the support plate, the top wall of the cavity is symmetrically provided with a first circular hole, the bottom wall of the cavity is symmetrically provided with a rectangular hole, the inner wall of the cavity is slidably connected with a connection box, the connection box is an arc-shaped structure, and the top of the connection box is symmetrically provided with a second circular hole.

[0011] Furthermore, the side wall of the stabilizing frame is fixedly connected to a fixing plate, the side wall of the fixing plate is fixedly connected to a second electric push rod, the movable end of the second electric push rod passes through the fixing plate and the side wall of the stabilizing frame and is fixedly connected to a first connecting rod, the first connecting rod is a U-shaped structure, and the top end of the first connecting rod passes through a rectangular hole and is fixedly connected to the bottom wall of the connecting box.

[0012] Furthermore, a material storage box is fixedly connected to the top of the mounting plate, a piston plate is sealingly and slidably connected to the inner wall of the material storage box, a positioning plate is fixedly connected to a side wall of one side of the material storage box, the positioning plate is an inverted L-shaped structure, and a second spring is symmetrically fixedly connected to the side wall of the positioning plate.

[0013] Furthermore, the two second springs are commonly fixedly connected to a push plate, the positioning plate side wall is fixedly connected to an electromagnet, the push plate side wall is fixedly connected to a permanent magnet, the push plate side wall is symmetrically fixedly connected to a second connecting rod, each of the second connecting rods is slidably connected to the side wall of the material storage box, and is fixedly connected to the side wall of the piston plate.

[0014] Furthermore, a conduit is symmetrically fixedly connected to the side wall of the other side of the storage box, one end of each conduit passes through an adjacent rectangular hole and is fixedly connected to the side wall of the connection box, a one-way valve is installed inside each conduit, and a feed pipe is fixedly connected to the top of the storage box.

[0015] Furthermore, the air dispersion assembly includes two groups of fan blades, and the two groups of fan blades are symmetrically fixedly connected to the top of the mounting plate. The two fan blades on the same side are fixedly connected by a rotating rod, and each side wall of the rotating rod is fixedly connected to a second synchronous wheel, and the top of the mounting plate is fixedly connected to a support leg.

[0016] Furthermore, a motor is fixedly connected to the top of the leg, a rotating shaft is fixedly connected to the output end of the motor, a first synchronous wheel is fixedly connected to the side wall of the rotating shaft, and the two second synchronous wheels and the first synchronous wheel are connected by a synchronous belt.

[0017] Compared with the prior art, the present invention has the following beneficial effects: By setting the support component, the first electric push rod works, and its active end begins to extend, thereby driving the mounting plate to start rising until the support plate contacts the tunnel top, supporting the tunnel top to avoid the collapse of the tunnel top wall during the leakage of the high-pressure gas well. By setting the support plate to an arc surface, the contact surface with the tunnel top is increased to improve the support effect; by supporting the leaking part, on the one hand, the support plate is used for preliminary plugging operations, and on the other hand, during the plugging operation, the collapse of the tunnel top is avoided during the plugging operation, thereby improving safety; by setting the plugging component, the electromagnet is energized and the one-way valve is opened, so that the electromagnet and the permanent The adjacent surfaces of the magnets generate like magnetic poles, and the generated magnetic repulsion force is used to push the push plate and the piston plate to move. At this time, the second spring is in a stretched state, and under the action of the pressure difference generated by the sealing sliding between the piston plate and the inner wall of the storage box, the plugging agent inside the storage box can only be introduced into the connection box along the conduit, wherein the width of the internal chamber of the connection box is small, and the plugging agent will immediately flow out along the second circular hole on the side wall after entering the connection box, and overflow through the first circular hole adjacent to the side wall of the support plate, plugging the leak around the crack, and timely plugging the leak around the leakage of the high-pressure gas well, so as to avoid the high-pressure gas well being in a leaking state all the time, and improve the safety during the plugging process; By setting up the gas dispersion component, when the staff is performing the plugging operation, the motor is driven to drive the rotating shaft to rotate, so that the second synchronous wheel rotates synchronously, and the meshing connection between the second synchronous wheel, the first synchronous wheel and the synchronous belt is utilized, so that the synchronous belt drives the two first synchronous wheels to rotate synchronously, thereby causing the rotating rod to rotate, and further drives the fan blades on both sides to work, and the fan blades on both sides are utilized to guide the airflow to both sides, so as to accelerate the dispersion of toxic gases at the leakage location, reduce the concentration of toxic gases, and avoid excessive concentration of toxic gases, which will cause safety hazards to the staff performing the plugging operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a structural schematic diagram of the support assembly in the present invention; Figure 4 for Figure 3 A partial enlarged schematic diagram of part A; Figure 5 is a side sectional view of the support plate in the present invention; Figure 6 It is a cross-sectional view of the leak-proof component in the present invention; Figure 7 It is a partial structural schematic diagram of the leak-proof component in the present invention; Figure 8 It is a schematic diagram of the main structure of the leak-proof component in the present invention; Fig. 9 It is a schematic diagram of the structure of the gas diffusion component in the present invention.

[0019] In the figure: 1, moving seat; 11, bracket; 2, support assembly; 21, first electric push rod; 22, mounting plate; 23, telescopic rod; 24, first spring; 25, stabilizing frame; 26, support plate; 3, plugging assembly; 31, cavity; 32, first circular hole; 33, rectangular hole; 34, connecting box; 35, second circular hole; 36, fixing plate; 37, second electric push rod; 38, first connecting rod; 39, storage box ; 310, positioning plate; 311, electromagnet; 312, second spring; 313, push plate; 314, permanent magnet; 315, second connecting rod; 316, piston plate; 317, conduit; 318, one-way valve; 319, feed pipe; 4, air dispersion assembly; 41, fan blades; 42, support legs; 43, motor; 44, rotating shaft; 45, first synchronous wheel; 46, rotating rod; 47, second synchronous wheel; 48, synchronous belt. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In order to solve the technical problem that in the tunnel excavation project, there will be high-pressure gas wells around the tunnel, which will pose a serious threat to the safe construction of the tunnel. If the high-pressure gas well leaks and is not supported in time, it will seriously cause the collapse of the tunnel above, such as Figure 1 - Figure 5 As shown, the following preferred technical solutions are provided: A tunnel operation safety monitoring and protection device comprises a moving seat 1, a bracket 11 is fixedly connected to the top of the moving seat 1, a support assembly 2 is installed on the top of the bracket 11, by setting the support assembly 2, a first electric push rod 21 works, and its movable end begins to extend, thereby driving the mounting plate 22 to start rising, until the support plate 26 contacts with the tunnel top, supports the tunnel top, avoids the collapse of the tunnel top wall during the leakage of the high-pressure gas well, and increases the contact surface with the tunnel top by setting the support plate 26 as an arc surface, thereby improving the supporting effect; by supporting the leakage, on the one hand, the support plate 26 is used to perform preliminary plugging operations, and on the other hand, during the plugging operation, the collapse of the tunnel top is avoided during the plugging operation, thereby improving safety.

[0022] A plugging component 3 is installed inside the support component 2. By setting the plugging component 3, the electromagnet 311 is energized and the one-way valve 318 is opened, so that the electromagnet 311 and the adjacent surfaces of the permanent magnet 314 generate like magnetic poles, and the generated magnetic repulsion force is used to push the push plate 313 and the piston plate 316 to move. At this time, the second spring 312 is in a stretched state, and under the action of the pressure difference generated by the sealed sliding between the piston plate 316 and the inner wall of the storage box 39, the plugging agent inside the storage box 39 can only be introduced into the connection box 34 along the conduit 317, wherein the internal chamber width of the connection box 34 is relatively small. After the plugging agent enters the connection box 34, it will immediately flow out along the second circular hole 35 on the side wall, and overflow through the first circular hole 32 adjacent to the side wall of the support plate 26, plugging the leak around the crack, and timely plugging the leak around the leakage of the high-pressure gas well, to avoid the high-pressure gas well being in a leakage state all the time, thereby improving the safety during the plugging process.

[0023] An air dispersion component 4 is installed inside the support component 2. By setting up the air dispersion component 4, when the staff is performing the plugging operation, the motor 43 is driven to drive the rotating shaft 44 to rotate, so that the second synchronous wheel 45 rotates synchronously, and the meshing connection between the second synchronous wheel 45, the first synchronous wheel 47 and the synchronous belt 48 is utilized, so that the synchronous belt 48 drives the two first synchronous wheels 47 to rotate synchronously, thereby causing the rotating rod 46 to rotate, and further drives the fan blades 41 on both sides to work, and utilizes the fan blades 41 on both sides to guide the airflow to both sides, so as to accelerate the dispersion of toxic gases at the leakage position, reduce the concentration of toxic gases, and avoid excessive concentration of toxic gases, which will cause safety hazards to the staff performing the plugging operation.

[0024] The support assembly 2 includes multiple first electric push rods 21, each of which is fixedly connected to the top of the bracket 11, and the movable ends of the multiple first electric push rods 21 are commonly fixedly connected to the mounting plate 22, and the top of the mounting plate 22 is symmetrically fixedly connected to the telescopic rods 23, and the movable ends of the multiple telescopic rods 23 are commonly fixedly connected to the stabilizing frame 25.

[0025] The top of the mounting plate 22 is symmetrically fixedly connected with a first spring 24. The first spring 24 is provided to provide elastic support to prevent the support force from being too large and the crack from increasing during the upward support process of the support plate 26. One end of each first spring 24 is fixedly connected to the bottom end of the stabilizing frame 25, and both are sleeved on the outer side wall of the adjacent telescopic rod 23. The top of the stabilizing frame 25 is fixedly connected with a support plate 26. The support plate 26 is an arc-shaped structure. By setting the support plate 26 as an arc surface, the contact surface with the tunnel top is increased, thereby improving the support effect.

[0026] In this solution: when the monitoring system detects that there is a high-pressure gas well leakage inside the tunnel, the protective device is moved to the leakage site through the moving seat 1, and the first electric push rod 21 is started. The first electric push rod 21 works, and its movable end begins to extend, thereby driving the mounting plate 22 to start rising until the support plate 26 contacts the top of the tunnel, and supports the top of the tunnel to avoid the collapse of the tunnel top wall during the high-pressure gas well leakage. By setting the support plate 26 to an arc surface, the contact surface with the tunnel top is increased, and the supporting effect is improved; wherein the first spring 24 is set to perform elastic support, and the support force is not too large during the support process of the support plate 26 rising, thereby increasing the crack; by supporting the leakage site, on the one hand, the support plate 26 is used to perform preliminary plugging operations, and on the other hand, during the plugging operation, the collapse of the tunnel top is avoided during the plugging operation, thereby improving safety; After the support is completed, when the protective device needs to be removed, the first electric push rod 21 is started, and its movable end begins to shrink, thereby driving the support plate 26 to descend, so that the support plate 26 leaves the top of the tunnel, and then pushes the protective device away through the moving seat 1.

[0027] In order to solve the technical problem that if a high-pressure gas well leaks, it still takes some time from the leak to the staff to plug the leak. At this time, the high-pressure gas well has already leaked, and the plugging operation cannot be carried out immediately when the leak occurs, such as Figure 6 - Figure 8 As shown, the following preferred technical solutions are provided: The leak-proof component 3 includes a cavity 31, which is opened inside the support plate 26. The top wall of the cavity 31 is symmetrically provided with a first circular hole 32, and the bottom wall of the cavity 31 is symmetrically provided with a rectangular hole 33. The inner wall of the cavity 31 is slidably connected with a connection box 34, which is an arc-shaped structure, and the top of the connection box 34 is symmetrically provided with a second circular hole 35.

[0028] A fixing plate 36 is fixedly connected to the side wall of the stabilizing frame 25, and a second electric push rod 37 is fixedly connected to the side wall of the fixing plate 36. The movable end of the second electric push rod 37 passes through the fixing plate 36 and the side wall of the stabilizing frame 25 and is fixedly connected to a first connecting rod 38. The first connecting rod 38 is a U-shaped structure, and the top end of the first connecting rod 38 passes through the rectangular hole 33 and is fixedly connected to the bottom wall of the connecting box 34.

[0029] A material storage box 39 is fixedly connected to the top of the mounting plate 22, a piston plate 316 is sealingly and slidably connected to the inner wall of the material storage box 39, a positioning plate 310 is fixedly connected to the side wall of one side of the material storage box 39, the positioning plate 310 is an inverted L-shaped structure, and a second spring 312 is symmetrically fixedly connected to the side wall of the positioning plate 310.

[0030] The two second springs 312 are commonly fixedly connected to the push plate 313, the side wall of the positioning plate 310 is fixedly connected to the electromagnet 311, the side wall of the push plate 313 is fixedly connected to the permanent magnet 314, and the side wall of the push plate 313 is symmetrically fixedly connected to the second connecting rod 315, each second connecting rod 315 is slidably connected to the side wall of the material storage box 39, and is fixedly connected to the side wall of the piston plate 316.

[0031] The other side wall of the storage box 39 is symmetrically fixed with a conduit 317, one end of each conduit 317 passes through the adjacent rectangular hole 33 and is fixedly connected to the side wall of the connecting box 34, a one-way valve 318 is installed inside each conduit 317, and the top of the storage box 39 is fixedly connected with a feed pipe 319, and a one-way feed valve is installed inside the feed pipe 319, so that the plugging agent can only enter the interior of the storage box 39 along the feed pipe 319.

[0032] In this solution, after the support plate 26 contacts the leaking part of the tunnel top, although it can play a partial role in plugging the leak, a large amount of toxic gas will still overflow. At this time, the second electric push rod 37 is started, and the movable end of the second electric push rod 37 begins to extend, and moves along the rectangular hole 33 through the first connecting rod 38, driving the arc-shaped connection box 34 to move synchronously, so as to move the connection box 34 to the precise crack. At this time, the connection box 34 will be connected with the adjacent first circular hole 32, and then the electromagnet 311 will be energized and the one-way valve 318 will be opened, so that the electromagnet 311 and the adjacent surface of the permanent magnet 314 will generate the same magnetic pole, and the magnetic repulsion generated will be used to push the push plate 313 and the piston plate 316 to move. Move, at this time, the second spring 312 is in a stretched state, and under the action of the pressure difference caused by the sealed sliding between the piston plate 316 and the inner wall of the storage box 39, the plugging agent inside the storage box 39 can only be introduced into the connection box 34 along the conduit 317, wherein the width of the internal chamber of the connection box 34 is relatively small, and the plugging agent will immediately flow out along the second circular hole 35 of the side wall after entering the connection box 34, and overflow through the first circular hole 32 adjacent to the side wall of the support plate 26, plugging the leak around the crack, and timely plugging the leak around the high-pressure gas well by supporting the top of the tunnel, so as to avoid the high-pressure gas well being in a leaking state all the time, thereby improving the safety during the plugging process; During the plugging process, if it is necessary to add plugging agent, the power to the electromagnet 311 is cut off, and the magnetic repulsion between the electromagnet 311 and the permanent magnet 314 disappears. At this time, under the elastic action of the second spring 312, it shrinks and resets, pulling the push plate 313 and the piston plate 316 to reset and move. At this time, the pressure difference generated is used to make the external plugging agent enter the storage box 39 along the feed pipe 319, wherein a one-way feed valve is installed inside the feed pipe 319, so that the plugging agent can only enter the storage box 39 along the feed pipe 319.

[0033] In order to solve the problem that the high-pressure gas in high-pressure gas wells often contains CO, H 2 Once toxic and harmful gases such as S leak into the tunnel space along the cracks, if the toxic gases around the leakage are not blown away in time, it will threaten the lives of the workers in the tunnel. There are technical problems with potential safety hazards, such as Figure 6 and Fig. 9 As shown, the following preferred technical solutions are provided: The air dispersion component 4 includes two groups of fan blades 41, and the two groups of fan blades 41 are symmetrically fixedly connected to the top of the mounting plate 22. The two fan blades 41 on the same side are fixedly connected by a rotating rod 46. The side wall of each rotating rod 46 is fixedly connected to a second synchronous wheel 47. The motor 43 drives the rotating shaft 44 to rotate, so that the second synchronous wheel 45 rotates synchronously. The meshing connection between the second synchronous wheel 45, the first synchronous wheel 47 and the synchronous belt 48 is utilized, so that the synchronous belt 48 drives the two first synchronous wheels 47 to rotate synchronously, thereby causing the rotating rod 46 to rotate. The top of the mounting plate 22 is fixedly connected to a support leg 42.

[0034] A motor 43 is fixedly connected to the top of the leg 42 , a rotating shaft 44 is fixedly connected to the output end of the motor 43 , a first synchronous wheel 45 is fixedly connected to the side wall of the rotating shaft 44 , and two second synchronous wheels 47 and the first synchronous wheel 45 are connected via a synchronous belt 48 .

[0035] In this scheme: since the high-pressure gas well contains toxic gas, the toxic gas content inside the tunnel will increase during the leakage of the high-pressure gas well. If the staff performs plugging operations under this situation, there will be hidden dangers to the safety of the staff; when the staff is performing plugging operations, the driving motor 43 drives the rotating shaft 44 to rotate, so that the second synchronous wheel 45 rotates synchronously, and the meshing connection between the second synchronous wheel 45, the first synchronous wheel 47 and the synchronous belt 48 is utilized, so that the synchronous belt 48 drives the two first synchronous wheels 47 to rotate synchronously, thereby causing the rotating rod 46 to rotate, further driving the fan blades 41 on both sides to work, and using the fan blades 41 on both sides to guide the airflow to both sides, so as to accelerate the dispersion of toxic gases at the leakage position, reduce the concentration of toxic gases, and avoid excessive concentration of toxic gases, which will cause safety hazards to the staff performing plugging operations.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel operation safety monitoring and protection device, comprising a movable seat (1), characterized in that: The top of the movable seat (1) is fixedly connected to a bracket (11), the top of the bracket (11) is equipped with a support assembly (2), a leak-blocking assembly (3) is installed inside the support assembly (2), and a gas dispersion assembly (4) is installed inside the support assembly (2).

2. A tunnel operation safety monitoring and protection device according to claim 1, characterized in that: The support assembly (2) comprises a plurality of first electric push rods (21), each of the first electric push rods (21) being fixedly connected to the top of the bracket (11), the movable ends of the plurality of first electric push rods (21) being fixedly connected to a mounting plate (22), the top of the mounting plate (22) being symmetrically fixedly connected to telescopic rods (23), and the movable ends of the plurality of telescopic rods (23) being fixedly connected to a stabilizing frame (25).

3. A tunnel operation safety monitoring and protection device according to claim 2, characterized in that: The top of the mounting plate (22) is symmetrically fixedly connected to a first spring (24), one end of each of the first springs (24) is fixedly connected to the bottom end of a stabilizing frame (25), and each is sleeved on the outer side wall of an adjacent telescopic rod (23), the top of the stabilizing frame (25) is fixedly connected to a support plate (26), and the support plate (26) is an arc-shaped structure.

4. A tunnel operation safety monitoring and protection device according to claim 3, characterized in that: The leak-blocking assembly (3) comprises a cavity (31), the cavity (31) being opened inside the support plate (26), the top wall of the cavity (31) being symmetrically provided with a first circular hole (32), the bottom wall of the cavity (31) being symmetrically provided with a rectangular hole (33), the inner wall of the cavity (31) being slidably connected with a connection box (34), the connection box (34) being an arc-shaped structure, and the top end of the connection box (34) being symmetrically provided with a second circular hole (35).

5. A tunnel operation safety monitoring and protection device according to claim 4, characterized in that: The side wall of the stabilizing frame (25) is fixedly connected to a fixing plate (36), the side wall of the fixing plate (36) is fixedly connected to a second electric push rod (37), the movable end of the second electric push rod (37) passes through the fixing plate (36) and the side wall of the stabilizing frame (25) and is fixedly connected to a first connecting rod (38), the first connecting rod (38) is a U-shaped structure, the top end of the first connecting rod (38) passes through the rectangular hole (33) and is fixedly connected to the bottom wall of the connection box (34).

6. A tunnel operation safety monitoring and protection device according to claim 5, characterized in that: A material storage box (39) is fixedly connected to the top of the mounting plate (22), a piston plate (316) is sealingly and slidably connected to the inner wall of the material storage box (39), a positioning plate (310) is fixedly connected to a side wall of one side of the material storage box (39), the positioning plate (310) is an inverted L-shaped structure, and a second spring (312) is symmetrically fixedly connected to the side wall of the positioning plate (310).

7. A tunnel operation safety monitoring and protection device according to claim 6, characterized in that: The two second springs (312) are commonly fixedly connected to a push plate (313), the side wall of the positioning plate (310) is fixedly connected to an electromagnet (311), the side wall of the push plate (313) is fixedly connected to a permanent magnet (314), and the side wall of the push plate (313) is symmetrically fixedly connected to second connecting rods (315), each of which is slidably connected to the side wall of the material storage box (39) and fixedly connected to the side wall of the piston plate (316).

8. A tunnel operation safety monitoring and protection device according to claim 7, characterized in that: The side wall of the other side of the material storage box (39) is symmetrically fixedly connected to a conduit (317), one end of each conduit (317) passes through an adjacent rectangular hole (33) and is fixedly connected to the side wall of the connection box (34), a one-way valve (318) is installed inside each conduit (317), and the top end of the material storage box (39) is fixedly connected to a feed pipe (319).

9. A tunnel operation safety monitoring and protection device according to claim 2, characterized in that: The air dispersion assembly (4) comprises two groups of blades (41), the two groups of blades (41) are symmetrically fixedly connected to the top of the mounting plate (22), the two blades (41) located on the same side are fixedly connected via a rotating rod (46), the side wall of each rotating rod (46) is fixedly connected to a second synchronous wheel (47), and the top of the mounting plate (22) is fixedly connected to a support leg (42).

10. A tunnel operation safety monitoring and protection device according to claim 9, characterized in that: The top end of the support leg (42) is fixedly connected to a motor (43), the output end of the motor (43) is fixedly connected to a rotating shaft (44), the side wall of the rotating shaft (44) is fixedly connected to a first synchronous wheel (45), and the two second synchronous wheels (47) and the first synchronous wheel (45) are connected via a synchronous belt (48).

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