Gas tunnel pressure measuring device

Abstract

The invention belongs to the technical field of gas tunnel construction, and particularly relates to a gas tunnel pressure measuring device which comprises a pressure measuring pipe, a pressure measuring control unit arranged above the pressure measuring pipe, an upper taper sleeve fixedly sleeved on the upper side of the outer pipe wall of the pressure measuring pipe and a lower taper sleeve fixedly sleeved on the lower side of the outer pipe wall of the pressure measuring pipe. The lower side of the outer pipe wall of the pressure measuring pipe is further fixedly sleeved with a lower taper sleeve, and the outer side of the upper taper sleeve and the outer side of the lower taper sleeve are jointly sleeved with a hole sealing slurry bag. The difficulty of installing the pressure measuring pipe in the pressure measuring hole can be reduced, the sealing performance of the pressure measuring pipe between the upper side and the lower side of the hole sealing slurry bag and the hole wall of the pressure measuring hole can be improved, even if slurry escapes outwards, the slurry can be prevented from directly flowing into the hole bottom of the pressure measuring hole, follow-up pressure measurement is prevented from being affected, meanwhile, tight filling of the slurry can be assisted, and the sealing effect is good. And whether slurry escapes from the hole sealing slurry bag or not can be monitored.

Description

Technical Field

[0001] The invention belongs to the technical field of gas tunnel construction, and in particular relates to a gas tunnel pressure measuring device. Background Art

[0002] During the construction of gas tunnels, disasters such as gas explosions and outbursts threaten construction safety and personnel lives. Accurately measuring gas pressure can determine the gas status and assess the danger of outbursts, providing a basis for formulating reasonable ventilation and extraction plans, preventing gas accidents, and ensuring safe and orderly tunnel construction. Therefore, gas tunnel pressure measurement is crucial to safe production.

[0003] At present, the pressure measurement of gas tunnels mainly involves drilling pressure measuring holes at appropriate locations close to gas formations based on advanced geological forecast data, then putting a sealing slurry bag on the pressure measuring tube and installing a rubber slurry stopper, putting the pressure measuring hole in place, injecting a sealing slurry containing an expansion agent and an airtight agent in proportion, testing the patency of the pressure measuring tube after grouting, installing a pressure gauge after the sealing slurry solidifies, observing and recording the pressure value changes until the reading is stable, such as a gas tunnel pressure measuring device and method disclosed in patent announcement No. CN106837308B; by putting rubber slurry stoppers on both ends of the sealing slurry bag, it can not only improve the stability of the pressure measuring tube before grouting, but also prevent the slurry from escaping; However, although the rubber grouting plug has certain flexible deformability, since the outer diameter of the rubber grouting plug needs to match the aperture of the pressure measuring hole, the rubber grouting plug is still likely to get stuck with the rock of the hole wall of the pressure measuring hole during the process of being lowered into the hole, increasing the difficulty of installing the pressure measuring device. Secondly, since the rock structure in the pressure measuring hole is not uniform, there may be a gap between it and the rubber grouting plug. Therefore, when the slurry inside the slurry bag leaks from the bag wall, the slurry is still likely to flow from the gap between the rubber grouting plug and the wall of the pressure measuring hole to the bottom of the pressure measuring hole, which will not only make the pressure measuring hole unusable and affect the subsequent re-pressure measuring work, but also the slurry in the hole is not easy to clean out, resulting in poor use effect. Summary of the invention

[0004] The purpose of the present invention is to provide a gas tunnel pressure measuring device in view of the above problems.

[0005] To achieve the above object, the present invention adopts the following technical scheme: a gas tunnel pressure measuring device, comprising a pressure measuring tube and a pressure measuring control unit arranged above the pressure measuring tube, wherein the pressure measuring tube is plugged into the pressure measuring hole, and further comprising: An upper cone sleeve is fixedly sleeved on the upper side of the outer tube wall of the pressure measuring tube, and a lower cone sleeve is also fixedly sleeved on the lower side of the outer tube wall of the pressure measuring tube. The outer sides of the upper cone sleeve and the lower cone sleeve are jointly sleeved with a sealing pulp bag; Two plugging sleeves are respectively sleeved on the outer sides of the upper cone sleeve and the lower cone sleeve, and the two plugging sleeves respectively crimp and fix the two ends of the sealing pulp bag on the outer sides of the upper cone sleeve and the lower cone sleeve, and the outer side walls of the two plugging sleeves are both provided with annular airtight grooves, and the notches of the two annular airtight grooves are both installed with annular airtight sleeves, and the two plugging sleeves are jointly installed with an air injection unit, and the air injection unit is used to inject air into the interior of the two annular airtight grooves; The vibrating unit is installed on the top of the lower cone sleeve and is used to vibrate the slurry inside the sealing slurry bag.

[0006] Preferably, the gas injection unit includes threaded sealing rings fixedly sleeved on the upper and lower sides of the outer tube wall of the pressure measuring tube, the two sealing sleeves are threadedly sleeved on the outside of the threaded sealing ring on the same side, the upper cone sleeve and the lower cone sleeve are together with the threaded sealing ring and the sealing sleeve on the same side to form an annular airtight channel, an air injection pipe is arranged above the upper cone sleeve, and the air injection pipe is fixedly plugged into the threaded sealing ring on the same side, a connecting hard pipe is inserted through the end face of the upper cone sleeve, and a monitoring hose is fixedly connected to the bottom of the connecting hard pipe, an annular ventilation groove is provided on the inner wall of the lower cone sleeve, and the annular ventilation groove is connected to the monitoring hose, a plurality of air outlet holes are provided on the lower groove wall of the annular ventilation groove, a plurality of air inlet holes are provided on the groove walls of the two annular airtight grooves, and each air inlet hole is connected to the annular airtight channel on the same side, and a gas injection monitoring assembly is installed at the air inlet end of the air injection pipe.

[0007] Preferably, the vibration unit includes a plurality of circular grooves opened on the upper groove wall of the annular ventilation groove, and a vibration piston is slidably arranged inside each circular groove, a vibration rod is installed on the top of each vibration piston, and each vibration rod is slidably connected to the groove top of the circular groove on the same side, a spring is arranged between each vibration piston and the groove wall of the circular groove on the same side, and the gas injection monitoring assembly is installed with a pneumatic drive assembly.

[0008] Preferably, the gas injection monitoring assembly includes a gas injection box fixedly plugged into the end of the gas injection pipe, a gas charging tube is plugged into the top of the gas injection box, an air pressure sensor is installed on the side wall of the gas injection box, and the air pressure sensor is connected to the pressure measurement control unit.

[0009] Preferably, the pneumatic drive assembly includes a cylinder fixedly inserted into the side wall of the gas injection box, and a gas compression piston is slidably arranged inside the cylinder, an electric push rod is fixedly installed on the inner wall of the gas injection box, and the telescopic end of the electric push rod is fixedly connected to the side wall of the gas compression piston.

[0010] Preferably, an electric control valve is installed inside the inflation tube, and the electric control valve is electrically connected to the pressure measurement control unit.

[0011] Preferably, airtight baffle rings are installed at opposite ends of the two sealing sleeves, and the two airtight baffle rings abut against the end surface of the threaded sealing ring on the same side.

[0012] Preferably, mounting tubes are respectively provided on both sides above the upper cone sleeve, and the two mounting tubes are inserted through the inner side of the sealing sleeve on the same side, and the side wall of the sealing slurry bag is fixedly inserted with a grouting pipe and a grouting pipe, and the top ends of the grouting pipe and the grouting pipe both pass through the corresponding mounting tubes.

[0013] Compared with the existing technology, the advantages of a gas tunnel pressure measuring device are: Through the cooperation of the pressure measuring tube, pressure measuring control unit, upper cone sleeve, lower cone sleeve, sealing slurry bag, plugging sleeve, annular airtight groove, annular airtight sleeve and gas injection unit, the plugging sleeves on both sides of the upper side of the pressure measuring tube can be tightly against the inner wall of the pressure measuring hole through gas injection sealing, which not only reduces the difficulty of installing the pressure measuring tube into the pressure measuring hole, but also improves the sealing performance between the upper and lower sides of the sealing slurry bag and the wall of the pressure measuring hole. Even if the slurry escapes, it can prevent the slurry from directly flowing into the bottom of the pressure measuring hole to avoid affecting the subsequent pressure measurement. At the same time, the traditional way of tying the sealing slurry bag with a binding belt is changed to improve the sealing performance and stability between the two ends of the sealing slurry bag and the pressure measuring tube.

[0014] By setting up the vibration unit, the gas injection unit can be used to vibrate the slurry during the process of injecting the slurry, so as to improve the compactness of the slurry filling, thereby improving the stability and air tightness between the slurry and the wall of the pressure measuring hole after solidification, which is conducive to improving the accuracy of subsequent pressure measurement.

[0015] The gas injection monitoring component can not only be used to display the gas injection pressure inside the two annular airtight grooves, but also continuously monitor the changes in the internal pressure of the slurry while waiting for the grouting to solidify after the grouting is completed, and promptly remind the staff when there is an unreasonable change in the internal pressure of the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a gas tunnel pressure measuring device provided by the present invention; Figure 2 It is a schematic diagram of a pressure measuring tube of a gas tunnel pressure measuring device provided by the present invention being inserted into a pressure measuring hole; Figure 3 It is a schematic diagram of the connection structure between an upper cone sleeve and a pressure measuring tube of a gas tunnel pressure measuring device provided by the present invention; Figure 4 It is a schematic diagram of the connection structure between the lower cone sleeve and the pressure measuring tube of a gas tunnel pressure measuring device provided by the present invention; Figure 5 The invention provides a gas tunnel pressure measuring device. Figure 4 A magnified view of the structure of part A; Figure 6It is a schematic diagram of the internal structure of a gas injection box of a gas tunnel pressure measuring device provided by the present invention; Figure 7 The invention discloses a schematic diagram of the connection structure of a grouting pipe, a grouting discharge pipe and a sealing slurry bag of a gas tunnel pressure measuring device provided by the present invention.

[0017] In the figure: 1 pressure measuring tube, 2 pressure measuring control unit, 3 upper cone sleeve, 4 lower cone sleeve, 5 sealing slurry bag, 6 sealing sleeve, 7 annular airtight groove, 8 annular airtight sleeve, 9 gas injection unit, 91 threaded sealing ring, 92 annular airtight channel, 93 gas injection pipe, 94 connecting hard pipe, 95 monitoring hose, 96 annular ventilation groove, 97 air outlet, 98 air inlet, 10 vibrating unit, 101 circular groove, 102 vibrating piston, 103 vibrating rod, 104 spring, 11 gas injection monitoring assembly, 111 gas injection box, 112 charging pipe, 113 air pressure sensor, 12 air pressure drive assembly, 121 cylinder, 122 air compression piston, 123 electric push rod, 13 electric control valve, 14 airtight retaining ring, 15 installation pipe, 16 grouting pipe, 17 slurry discharge pipe. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] like Figure 1-Figure 7As shown, a gas tunnel pressure measuring device comprises a pressure measuring tube 1 and a pressure measuring control unit 2 arranged above the pressure measuring tube 1, the pressure measuring tube 1 is inserted into the pressure measuring hole, and also comprises: an upper cone sleeve 3, the upper cone sleeve 3 is fixedly sleeved on the upper side of the outer tube wall of the pressure measuring tube 1, and the lower side of the outer tube wall of the pressure measuring tube 1 is also fixedly sleeved with a lower cone sleeve 4, the outer sides of the upper cone sleeve 3 and the lower cone sleeve 4 are jointly sleeved with a sealing slurry bag 5, and two plugging sleeves 6 are respectively sleeved on the outer sides of the upper cone sleeve 3 and the lower cone sleeve 4, and the two plugging sleeves 6 press and fix the two ends of the sealing slurry bag 5 on On the outer sides of the upper cone sleeve 3 and the lower cone sleeve 4, the outer side walls of the two plugging sleeves 6 are both provided with annular airtight grooves 7, and the notches of the two annular airtight grooves 7 are both installed with annular airtight sleeves 8. The two plugging sleeves 6 are jointly installed with an air injection unit 9, and the air injection unit 9 is used to inject air into the inside of the two annular airtight grooves 7. The air injection unit 9 includes a threaded sealing ring 91 fixedly sleeved on the upper and lower sides of the outer wall of the pressure measuring tube 1. The two plugging sleeves 6 are both threadedly sleeved on the outer sides of the threaded sealing ring 91 on the same side. The upper cone sleeve 3 and the lower cone sleeve 4 are connected to the threaded sealing ring 91 on the same side. The upper cone sleeve 3 and the plugging sleeve 6 are together enclosed to form an annular airtight channel 92. An air injection pipe 93 is arranged above the upper cone sleeve 3, and the air injection pipe 93 is fixedly plugged with the threaded sealing ring 91 on the same side. A connecting hard pipe 94 is inserted through the end surface of the upper cone sleeve 3, and a monitoring hose 95 is fixedly connected to the bottom of the connecting hard pipe 94. An annular ventilation groove 96 is provided on the inner wall of the lower cone sleeve 4, and the annular ventilation groove 96 is connected to the monitoring hose 95. A plurality of air outlet holes 97 are provided on the lower side groove wall of the annular ventilation groove 96. The groove walls of the two annular airtight grooves 7 are provided with a plurality of air outlet holes 97. There are air inlet holes 98, and each air inlet hole 98 is connected to the annular airtight channel 92 on the same side. A gas injection monitoring component 11 is installed at the air inlet end of the gas injection pipe 93. The gas injection monitoring component 11 includes a gas injection box 111 fixedly plugged into the end of the gas injection pipe 93, and a charging tube 112 is plugged into the top of the gas injection box 111. An air pressure sensor 113 is installed on the side wall of the gas injection box 111, and the air pressure sensor 113 is connected to the pressure measurement control unit 2. The air pressure sensor 113 can convert the air pressure into an electrical signal and feed it back to the pressure measurement control unit 2.

[0020] The vibrating unit 10 is installed on the top of the lower cone sleeve 4 and is used to vibrate the slurry inside the sealing slurry bag 5. The vibrating unit 10 includes a plurality of circular grooves 101 provided on the upper groove wall of the annular ventilation groove 96, and a vibrating piston 102 is slidably arranged inside each circular groove 101, and a vibrating rod 103 is installed on the top of each vibrating piston 102, and each vibrating rod 103 is slidably connected to the groove top of the circular groove 101 on the same side, and a spring is arranged between each vibrating piston 102 and the groove wall of the circular groove 101 on the same side. Spring 104, the gas injection monitoring component 11 is equipped with a pneumatic drive component 12, the pneumatic drive component 12 includes a cylinder 121 fixedly inserted into the side wall of the gas injection box 111, and a gas compression piston 122 is slidably arranged inside the cylinder 121, an electric push rod 123 is fixedly installed on the inner wall of the gas injection box 111, and the telescopic end of the electric push rod 123 is fixedly connected to the side wall of the gas compression piston 122, the electric push rod 123 is a reciprocating electric push rod 123, and its telescopic end is driven to reciprocate by components such as a reciprocating screw rod inside.

[0021] An electric control valve 13 is installed inside the gas filling tube 112 , and the electric control valve 13 is electrically connected to the pressure measurement control unit 2 , so as to seal the gas filling tube 112 and prevent gas backflow.

[0022] An airtight retaining ring 14 is installed at the opposite ends of the two sealing sleeves 6, and the two airtight retaining rings 14 are both against the end surface of the threaded sealing ring 91 on the same side. The airtight retaining ring 14 can improve the sealing performance of the connection between the threaded sealing ring 91 and the sealing sleeve 6.

[0023] Mounting tubes 15 are respectively provided on both sides above the upper cone sleeve 3, and the two mounting tubes 15 are inserted through the inner side of the sealing sleeve 6 on the same side. A grouting tube 16 and a grouting tube 17 are fixedly inserted into the side wall of the sealing slurry bag 5. The top ends of the grouting tube 16 and the grouting tube 17 pass through the corresponding mounting tubes 15. The grouting tube 16 is used to inject slurry into the sealing slurry bag 5, and the grouting tube 17 is used to discharge excess air and slurry inside the sealing slurry bag 5.

[0024] The operating principle of the present invention is now described as follows: a pressure measuring hole is drilled at a suitable position inside the gas tunnel, and then the sealing slurry bag 5 is sleeved on the outside of the pressure measuring tube 1, and the two ends of the sealing slurry bag 5 are respectively on the outside of the upper cone sleeve 3 and the lower cone sleeve 4, and then the two plugging sleeves 6 are screwed into the outside of the corresponding threaded sealing rings 91 in sequence. Since the outer walls of the upper cone sleeve 3 and the lower cone sleeve 4 and the inner walls of the two plugging sleeves 6 are tapered and inclined, the plugging sleeves 6 can be firmly crimped to the outer sides of the upper cone sleeve 3 and the lower cone sleeve 4 after being screwed into place (compared with the traditional way of binding with cable ties, the fixing stability of the sealing slurry bag 5 is improved). and better air tightness), then the grouting pipe 16 and the grouting pipe 17 are respectively passed through the corresponding installation pipe 15. After the installation is completed, the entire pressure measuring tube 1 is inserted into the pressure measuring hole. Since the annular airtight sleeves 8 on the outer walls of the two plugging sleeves 6 have not yet expanded and bulged, the annular airtight sleeves 8 are not easy to scratch the rock formation on the wall of the pressure measuring hole. Even if scratching occurs, since the annular airtight sleeves 8 can be deformed, the annular airtight sleeves 8 are not easily damaged. At the same time, since the interior of the sealing hole slurry bag 5 is not filled with slurry at this time, it is also convenient to insert the sealing hole slurry bag 5 into the pressure measuring hole, thereby improving the installation convenience of the pressure measuring tube 1 inserted into the pressure measuring hole; After the pressure measuring tube 1 is inserted into the pressure measuring hole, the inflation tube 112 is connected to the external air pump, and then the external air pump is controlled to work through the pressure measuring control unit 2, and the air pump begins to inject air into the annular airtight channel 92 at the upper cone sleeve 3 through the inflation tube 112, the air injection box 111 and the air injection tube 93. A part of the air enters the annular airtight groove 7 of the upper sealing sleeve 6 through the upper air inlet hole 98, and the other part of the air enters the annular ventilation groove 96 through the connecting hard tube 94 and the monitoring hose 95, and then enters the lower annular airtight channel 92 through the air outlet hole 97, and finally enters through the air inlet hole 98 of the lower sealing sleeve 6. The two annular airtight grooves 7 are filled with gas. As the air pressure in the two annular airtight grooves 7 increases, the two annular airtight sleeves 8 begin to expand and bulge, and abut against the hole wall of the pressure measuring hole. At the same time, the air pressure in the gas injection box 111 will also increase synchronously. After the air pressure sensor 113 detects that the air pressure has increased to a threshold value (the threshold value is set based on the distance between the hole wall of the pressure measuring hole and the outer wall of the annular airtight sleeve 8 when not inflated), the air pressure sensor 113 will feedback an electrical signal to the pressure measuring control unit 2. At this time, the pressure measuring control unit 2 will control the external air pump to stop working, and control the electric control valve 13 in the inflation tube 112 to be energized and closed; Then wait for 1 minute. When there is a sharp part in the rock formation of the pressure measuring hole that punctures the side wall of the annular airtight sleeve 8, the air in the two annular airtight grooves 7 and the gas injection box 111 will flow out. At this time, the air pressure in the gas injection box 111 will decrease, and the electrical signal fed back to the pressure measuring control unit 2 by the air pressure sensor 113 will disappear. At this time, the pressure measuring control unit 2 will send out an early warning message through its own buzzer, etc. After receiving the early warning message, the staff should take out the pressure measuring tube 1 and replace the damaged annular airtight sleeve 8, and then adjust the insertion depth of the gas injection tube 93, and repeat the above steps until the air pressure sensor 113 does not detect a drop in air pressure. After 1 minute, the pressure measuring control unit 2 will send out a prompt message to remind the personnel to start grouting work; When performing grouting, the staff connects the external grouting equipment with the grouting pipe 16, then starts the external grouting equipment, and injects the prepared slurry into the sealing slurry bag 5 through the grouting pipe 16. At the same time, the staff starts the vibrating button on the pressure measurement control unit 2. At this time, the pressure measurement control unit 2 controls the electric push rod 123 to work, and the electric push rod 123 drives the compressed air piston 122 to move back and forth (the electric push rod 123 is a reciprocating electric push rod 123, and its internal components such as a reciprocating screw rod drive its telescopic end to move back and forth ), when the air compression piston 122 moves toward the electric push rod 123, the air compression piston 122 will squeeze the air in the air injection box 111. At this time, the air pressure inside the air injection box 111 increases. Since the two annular airtight sleeves 8 cannot continue to expand, the compressed air will push the vibrating pistons 102 inside each circular groove 101 to move upward, and the vibrating pistons 102 will drive their own vibrating rods 103 to move upward synchronously. When the air compression piston 122 moves away from the electric push rod 123, the air pressure inside the air injection box 111 decreases. When the grouting is completed, each compressed air piston 122 starts to move back and forth under the action of the spring 104. During the grouting process, the vibrating piston 102 continuously drives the vibrating rod 103 to move up and down, and the vibrating rod 103 can be used to vibrate the injected slurry, so that the slurry can be more fully and evenly filled in the sealing slurry bag 5, which is not only conducive to improving the filling effect of the slurry on the sealing slurry bag 5, but also after the slurry solidifies, its structural strength is higher, and the sealing effect is improved. During the grouting process, the air inside the sealing slurry bag 5 is discharged through the slurry discharge pipe 1 7 discharge, when the slurry starts to flow out of the slurry discharge pipe 17, the end of the slurry discharge pipe 17 is blocked. At this time, since the grouting equipment continues to grout into the sealing slurry bag 5, the pressure inside the sealing slurry bag 5 continues to increase, and the sealing slurry bag 5 expands and bulges against the inner wall of the pressure measuring hole. When the pressure reaches the set value, the grouting equipment is shut down, and the grouting pipe 16 and the slurry discharge pipe 17 are sealed (the pressure setting value is set based on the aperture of the pressure measuring hole, and a corresponding pressure detection sensor is installed at the grouting end of the grouting equipment to detect the grouting pressure); After the grouting is completed, the staff turns off the vibration button on the pressure measurement control unit 2. At this time, the pressure measurement control unit 2 will control the electric push rod 123 to drive the compressed air piston 122 to move back and reset, and then control the electric push rod 123 to stop working, and then wait for the slurry to solidify. After the grouting is completed, the pressure measurement control unit 2 will record the current pressure value detected by the air pressure sensor 113. During the waiting process, since the pressure inside the slurry gradually increases after solidification, the pressure on the monitoring hose 95 will also continue to increase, and the pressure detected by the air pressure sensor 113 will also continue to increase. When a leak appears on the side wall of the sealing slurry bag 5, the slurry inside the sealing slurry bag 5 will increase. Outflow, at this time, the slurry pressure inside the sealed pulp bag 5 is reduced, so the pressure detected by the air pressure sensor 113 will drop slightly. Therefore, when the air pressure value detected by the air pressure sensor 113 is lower than the air pressure value recorded by the pressure measurement control unit 2, it indicates that the sealed pulp bag 5 may have a leakage phenomenon. At this time, the pressure measurement control unit 2 will issue a warning message. After receiving the message, the staff should open the slurry discharge pipe 17 in time, take out the pressure measuring tube 1, and then replace the sealed pulp bag 5. And add protective measures around the damaged sealed pulp bag 5, such as attaching metal sheets, etc., to avoid the phenomenon that the sealed pulp bag 5 is damaged again during the secondary sealing; After the slurry solidifies (depending on the different slurries prepared, the waiting time for the slurry to solidify is also different), the staff checks whether the pressure measuring tube 1 is unobstructed. If it is unobstructed, the pressure measuring end of the pressure measuring control unit 2 is connected to the pressure measuring tube 1, and the pressure changes are observed and recorded. After a stable pressure value is obtained, the pressure measurement work is completed.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas tunnel pressure measuring device, comprising a pressure measuring tube (1) and a pressure measuring control unit (2) arranged above the pressure measuring tube (1), wherein the pressure measuring tube (1) is plugged into a pressure measuring hole, and characterized in that: Also includes: An upper cone sleeve (3) is fixedly sleeved on the upper side of the outer tube wall of the pressure measuring tube (1); a lower cone sleeve (4) is also fixedly sleeved on the lower side of the outer tube wall of the pressure measuring tube (1); and a sealing pulp bag (5) is sleeved on the outer sides of the upper cone sleeve (3) and the lower cone sleeve (4); Two plugging sleeves (6) are respectively sleeved on the outer sides of the upper cone sleeve (3) and the lower cone sleeve (4), and the two plugging sleeves (6) respectively crimp and fix the two ends of the sealing pulp bag (5) on the outer sides of the upper cone sleeve (3) and the lower cone sleeve (4), the outer side walls of the two plugging sleeves (6) are each provided with an annular airtight groove (7), and the notches of the two annular airtight grooves (7) are each provided with an annular airtight sleeve (8), and the two plugging sleeves (6) are jointly provided with an air injection unit (9), and the air injection unit (9) is used to inject air into the interior of the two annular airtight grooves (7); A vibrating unit (10) is installed on the top of the lower cone sleeve (4) and is used to vibrate the slurry inside the sealing slurry bag (5).

2. A gas tunnel pressure measuring device according to claim 1, characterized in that: The gas injection unit (9) comprises a threaded sealing ring (91) fixedly sleeved on the upper and lower sides of the outer tube wall of the pressure measuring tube (1); the two blocking sleeves (6) are both threadedly sleeved on the outside of the threaded sealing ring (91) on the same side; the upper cone sleeve (3) and the lower cone sleeve (4) together with the threaded sealing ring (91) and the blocking sleeve (6) on the same side enclose an annular gas-tight passage (92); an air injection pipe (93) is arranged above the upper cone sleeve (3); the air injection pipe (93) is fixedly plugged with the threaded sealing ring (91) on the same side; and a connecting hard pipe (93) is inserted through the end surface of the upper cone sleeve (3). 94), and a monitoring hose (95) is fixedly connected to the bottom of the connecting hard pipe (94), an annular ventilation groove (96) is provided on the inner wall of the lower cone sleeve (4), and the annular ventilation groove (96) is connected to the monitoring hose (95), a plurality of air outlet holes (97) are provided on the lower groove wall of the annular ventilation groove (96), a plurality of air inlet holes (98) are provided on the groove walls of the two annular airtight grooves (7), and each air inlet hole (98) is connected to the annular airtight channel (92) on the same side, and a gas injection monitoring component (11) is installed on the gas inlet end of the gas injection pipe (93).

3. A gas tunnel pressure measuring device according to claim 2, characterized in that: The vibration unit (10) comprises a plurality of circular grooves (101) provided on the upper groove wall of the annular ventilation groove (96), and a vibration piston (102) is slidably arranged inside each circular groove (101), a vibration rod (103) is installed on the top of each vibration piston (102), and each vibration rod (103) is slidably connected to the groove top of the circular groove (101) on the same side, a spring (104) is arranged between each vibration piston (102) and the groove wall of the circular groove (101) on the same side, and the gas injection monitoring component (11) is installed with a pneumatic drive component (12).

4. A gas tunnel pressure measuring device according to claim 3, characterized in that: The gas injection monitoring assembly (11) comprises a gas injection box (111) fixedly plugged into the end of a gas injection tube (93), a gas charging tube (112) plugged into the top of the gas injection box (111), a gas pressure sensor (113) installed on the side wall of the gas injection box (111), and the gas pressure sensor (113) is connected to the pressure measurement control unit (2).

5. A gas tunnel pressure measuring device according to claim 4, characterized in that: The pneumatic drive assembly (12) comprises a cylinder (121) fixedly plugged into a side wall of a gas injection box (111), and a gas compression piston (122) is slidably arranged inside the cylinder (121); an electric push rod (123) is fixedly mounted on the inner wall of the gas injection box (111), and a telescopic end of the electric push rod (123) is fixedly connected to the side wall of the gas compression piston (122).

6. A gas tunnel pressure measuring device according to claim 4, characterized in that: An electric control valve (13) is installed inside the inflation tube (112), and the electric control valve (13) is electrically connected to the pressure measurement control unit (2).

7. A gas tunnel pressure measuring device according to claim 2, characterized in that: An airtight retaining ring (14) is installed at opposite ends of the two sealing sleeves (6), and the two airtight retaining rings (14) are in contact with the end surface of the threaded sealing ring (91) on the same side.

8. A gas tunnel pressure measuring device according to claim 1, characterized in that: Mounting tubes (15) are respectively provided on both sides above the upper cone sleeve (3), and the two mounting tubes (15) are inserted through the inner side of the plugging sleeve (6) on the same side, and a grouting tube (16) and a grouting tube (17) are fixedly inserted into the side wall of the sealing slurry bag (5), and the top ends of the grouting tube (16) and the grouting tube (17) pass through the inside of the corresponding mounting tubes (15).

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