A gas tunnel pressure measuring device

Abstract

The present invention belongs to the technical field of gas tunnel construction, and in particular relates to a gas tunnel pressure measuring device, which includes a pressure measuring pipe and a pressure measuring control unit arranged above the pressure measuring pipe. The pressure measuring pipe is inserted into a pressure measuring hole, and further includes: an upper conical sleeve fixedly sleeved on the upper side of the outer pipe wall of the pressure measuring pipe. A lower conical sleeve is also fixedly sleeved on the lower side of the outer pipe wall of the pressure measuring pipe. A sealing slurry sac is jointly sleeved on the outer sides of the upper conical sleeve and the lower conical sleeve. The present invention can not only reduce the difficulty of installing the pressure measuring pipe into the pressure measuring hole, but also improve the sealing performance between the upper and lower sides of the pressure measuring pipe and the hole wall of the pressure measuring hole. Even if the slurry escapes, it can avoid the slurry directly flowing into the bottom of the pressure measuring hole, avoiding affecting subsequent pressure measurement. At the same time, it can assist the slurry to be tightly filled and can monitor whether there is slurry escape in the sealing slurry sac.

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 the gas pressure can judge the gas state, evaluate the outburst risk, provide a basis for formulating reasonable ventilation and drainage plans, prevent gas accidents, and ensure the safe and orderly progress of tunnel construction. Therefore, gas tunnel pressure measurement is crucial for safe production.

[0003] Currently, for gas tunnel pressure measurement, first, according to the advanced geological prediction data, a pressure measurement hole is drilled at a suitable position close to the gas-bearing formation. Then, a sealing slurry bladder bag is sleeved on the pressure measurement pipe and a rubber grout stopper is installed, and it is placed into the pressure measurement hole. A sealing slurry containing an expander and an airtight agent is injected in proportion. After grouting, the smoothness of the pressure measurement pipe is detected. After the sealing slurry solidifies, a pressure gauge is installed, and the change of the pressure value is observed and recorded until the reading is stable. For example, a gas tunnel pressure measuring device and method disclosed in the patent publication number CN106837308B; by sleeving rubber grout stoppers at both ends of the sealing slurry bladder bag, it can not only improve the stability of the pressure measurement pipe before grouting, but also prevent the slurry from escaping.

[0004] However, although the rubber grout stopper has a certain flexible deformable property, since the outer diameter of the rubber grout stopper needs to match the aperture of the pressure measurement hole, the rubber grout stopper still may be stuck with the rock on the hole wall of the pressure measurement hole during the process of being lowered into the hole, increasing the installation difficulty of the pressure measuring device. Secondly, due to the uneven rock formation structure in the pressure measurement hole, there may be a gap between it and the rubber grout stopper. Therefore, when the slurry inside the slurry bladder bag leaks from the bag wall, the slurry still has a high possibility of flowing from the gap between the rubber grout stopper and the hole wall of the pressure measurement hole to the bottom of the pressure measurement hole, which will not only cause the pressure measurement hole to be unusable and affect the subsequent re-pressure measurement work, but also the slurry in the hole is not easy to clean out, and the use effect is not good. Summary of the Invention

[0005] The purpose of the invention is to solve the above problems and provide a gas tunnel pressure measuring device.

[0006] To achieve the above purpose, the invention adopts the following technical solutions: A gas tunnel pressure measuring device includes a pressure measurement pipe and a pressure measurement control unit arranged above the pressure measurement pipe. The pressure measurement pipe is inserted into a pressure measurement hole, and further includes:

[0007] An upper conical sleeve is fixedly sleeved on the upper side of the outer pipe wall of the pressure measurement pipe. A lower conical sleeve is also fixedly sleeved on the lower side of the outer pipe wall of the pressure measurement pipe. A sealing slurry bladder bag is sleeved on the outer sides of the upper conical sleeve and the lower conical sleeve;

[0008] Two plugging sleeves are respectively sleeved on the outer sides of the upper conical sleeve and the lower conical sleeve, and the two plugging sleeves press and fix the two ends of the hole-sealing slurry sac outside the upper conical sleeve and the lower conical sleeve respectively. Annular airtight grooves are formed in the outer side walls of the two plugging sleeves, and annular airtight sleeves are installed at the openings of the two annular airtight grooves. An air injection unit is commonly installed on the two plugging sleeves, and the air injection unit is used for injecting air into the interiors of the two annular airtight grooves;

[0009] A vibrating unit is installed on the top of the lower conical sleeve and is used for vibrating the slurry inside the hole-sealing slurry sac.

[0010] Preferably, the air injection unit includes thread sealing rings fixedly sleeved on the upper and lower outer tube walls of the pressure measuring tube. The two plugging sleeves are respectively thread-sleeved on the outer sides of the thread sealing rings on the same side. The upper conical sleeve and the lower conical sleeve, together with the thread sealing rings and the plugging sleeves on the same side, enclose an annular airtight channel. An air injection pipe is arranged above the upper conical sleeve, and the air injection pipe is fixedly inserted into the thread sealing ring on the same side. A communicating hard pipe is inserted through the end face of the upper conical sleeve, and a monitoring hose is fixedly connected to the bottom of the communicating hard pipe. An annular ventilation groove is formed in the inner wall of the lower conical sleeve, and the annular ventilation groove is communicated with the monitoring hose. A plurality of air outlet holes are formed in the lower side wall of the annular ventilation groove. A plurality of air inlet holes are formed in the groove walls of the two annular airtight grooves, and each air inlet hole is communicated with the annular airtight channel on the same side. An air injection monitoring component is installed at the air inlet end of the air injection pipe.

[0011] Preferably, the vibrating unit includes a plurality of circular grooves formed in the upper side wall of the annular ventilation groove. A vibrating piston is slidably arranged in each circular groove. A vibrating rod is installed at the top of each vibrating piston, and each vibrating rod is slidably connected to the top of the circular groove on the same side. A spring is arranged between each vibrating piston and the groove wall of the circular groove on the same side. The air injection monitoring component is provided with a pneumatic driving component.

[0012] Preferably, the air injection monitoring component includes an air injection box fixedly inserted at the pipe end of the air injection pipe. An air charging pipe is inserted into the top of the air injection box. A pressure sensor is installed on the side wall of the air injection box, and the pressure sensor is communicated with the pressure measuring and control unit.

[0013] Preferably, the pneumatic driving component includes a cylinder fixedly inserted into the side wall of the air injection box. A compressed air piston is slidably arranged in the cylinder. An electric push rod is fixedly installed on the inner wall of the air injection box, and the telescopic end of the electric push rod is fixedly connected to the side wall of the compressed air piston.

[0014] Preferably, an electric control valve is installed in the air charging pipe, and the electric control valve is electrically connected to the pressure measuring and control unit.

[0015] Preferably, airtight retaining rings are installed at opposite ends of the two plugging sleeves, and the two airtight retaining rings are in contact with the end faces of the threaded sealing rings on the same side.

[0016] Preferably, installation pipes are respectively arranged on both sides above the upper conical sleeve, and the two installation pipes are inserted through and connected to the inside of the plugging sleeve on the same side. A grouting pipe and a slurry discharge pipe are fixedly inserted into the side wall of the hole-sealing slurry sac. The tops of the grouting pipe and the slurry discharge pipe both pass through the inside of the corresponding installation pipe.

[0017] Compared with the existing technology, the advantages of a gas tunnel pressure measurement device are as follows:

[0018] Through the mutual cooperation of the pressure measurement pipe, the pressure measurement control unit, the upper conical sleeve, the lower conical sleeve, the hole-sealing slurry sac, the plugging sleeve, the annular airtight groove, the annular airtight sleeve and the air injection unit, in the way of air injection and sealing, the plugging sleeves on both sides of the upper side of the pressure measurement pipe can be tightly abutted against the inner wall of the pressure measurement hole, which can not only reduce the difficulty of installing the pressure measurement pipe into the pressure measurement hole, but also improve the sealing performance between the pressure measurement pipe and the hole wall of the pressure measurement hole on both sides of the upper and lower sides of the hole-sealing slurry sac. Even if the slurry escapes, it can avoid the slurry directly flowing into the bottom of the pressure measurement hole, avoiding affecting subsequent pressure measurement. At the same time, it changes the traditional way of tying the hole-sealing slurry sac with a binding band, improving the sealing performance and stability between the two ends of the hole-sealing slurry sac and the pressure measurement pipe.

[0019] Through the arranged vibrating unit, the air injection unit can be used to vibrate the slurry during the process of injecting the slurry, improving the tightness of the slurry filling, thereby improving the stability and airtightness between the cured slurry and the hole wall of the pressure measurement hole, which is beneficial to improving the accuracy of subsequent pressure measurement.

[0020] Through the arranged air injection monitoring component, it can not only be used to display the air injection pressure in the two annular airtight grooves, but also continuously monitor the change of the internal pressure of the slurry during the process of waiting for the slurry to solidify after grouting, and timely remind the staff when the internal pressure of the slurry shows unreasonable changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. is a schematic structural diagram of a gas tunnel pressure measurement device provided by the present invention;

[0022] Figure 2 FIG. is a schematic diagram of the pressure measurement pipe of the gas tunnel pressure measurement device provided by the present invention inserted into the pressure measurement hole;

[0023] Figure 3 FIG. is a schematic structural diagram of the connection between the upper conical sleeve and the pressure measurement pipe of the gas tunnel pressure measurement device provided by the present invention;

[0024] Figure 4 FIG. is a schematic structural diagram of the connection between the lower conical sleeve and the pressure measurement pipe of the gas tunnel pressure measurement device provided by the present invention;

[0025] Figure 5 is an enlarged structural view of part A in a gas tunnel pressure measuring device provided by the present invention Figure 4 in;

[0026] Figure 6 is a schematic internal structure view of an air injection box of a gas tunnel pressure measuring device provided by the present invention

[0027] Figure 7 is a schematic connection structure view of a grouting pipe and a slurry discharge pipe of a gas tunnel pressure measuring device provided by the present invention with a sealing hole slurry bag

[0028] In the figure: 1 pressure measuring pipe, 2 pressure measuring control unit, 3 upper conical sleeve, 4 lower conical sleeve, 5 sealing hole slurry bag, 6 plugging sleeve, 7 annular airtight groove, 8 annular airtight sleeve, 9 air injection unit, 91 threaded sealing ring, 92 annular airtight passage, 93 air injection pipe, 94 communicating rigid pipe, 95 monitoring hose, 96 annular ventilation groove, 97 air outlet hole, 98 air inlet hole, 10 vibrating unit, 101 circular groove, 102 vibrating piston, 103 vibrating rod, 104 spring, 11 air injection monitoring component, 111 air injection box, 112 charging pipe, 113 air pressure sensor, 12 air pressure driving component, 121 cylinder barrel, 122 air pressure piston, 123 electric push rod, 13 electric control valve, 14 airtight retaining ring, 15 installation pipe, 16 grouting pipe, 17 slurry discharge pipe Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments

[0030] Such as Figures 1-7As shown in the figure, a gas tunnel pressure measurement device includes a pressure measurement pipe 1 and a pressure measurement control unit 2 arranged above the pressure measurement pipe 1. The pressure measurement pipe 1 is inserted into a pressure measurement hole, and further includes: an upper conical sleeve 3 fixedly sleeved on the upper side of the outer pipe wall of the pressure measurement pipe 1, and a lower conical sleeve 4 is also fixedly sleeved on the lower side of the outer pipe wall of the pressure measurement pipe 1. An sealing slurry bag 5 is sleeved on the outer sides of the upper conical sleeve 3 and the lower conical sleeve 4. Two plugging sleeves 6 are respectively sleeved on the outer sides of the upper conical sleeve 3 and the lower conical sleeve 4, and the two plugging sleeves 6 press and fix the two ends of the sealing slurry bag 5 on the outer sides of the upper conical sleeve 3 and the lower conical sleeve 4 respectively. Annular airtight grooves 7 are opened on the outer side walls of the two plugging sleeves 6, and annular airtight sleeves 8 are installed at the openings of the two annular airtight grooves 7. An air injection unit 9 is commonly installed on the two plugging sleeves 6. The air injection unit 9 is used to inject air into the interiors of the two annular airtight grooves 7. The air injection unit 9 includes threaded sealing rings 91 fixedly sleeved on the upper and lower sides of the outer pipe wall of the pressure measurement pipe 1. The two plugging sleeves 6 are both threadedly sleeved on the outer sides of the threaded sealing rings 91 on the same side. An annular airtight channel 92 is formed by enclosing the upper conical sleeve 3, the lower conical sleeve 4, the threaded sealing rings 91 on the same side and the plugging sleeves 6. An air injection pipe 93 is arranged above the upper conical sleeve 3, and the air injection pipe 93 is fixedly inserted into the threaded sealing ring 91 on the same side. A communicating hard pipe 94 is inserted through the end face of the upper conical sleeve 3, and a monitoring hose 95 is fixedly connected to the bottom of the communicating hard pipe 94. An annular ventilation groove 96 is opened on the inner wall of the lower conical sleeve 4, and the annular ventilation groove 96 is communicated with the monitoring hose 95. A plurality of air outlet holes 97 are opened on the lower side wall of the annular ventilation groove 96. A plurality of air inlet holes 98 are opened on the groove walls of the two annular airtight grooves 7, and each air inlet hole 98 is communicated with the annular airtight channel 92 on the same side. An air injection monitoring component 11 is installed at the air inlet end of the air injection pipe 93. The air injection monitoring component 11 includes an air injection box 111 fixedly inserted at the pipe end of the air injection pipe 93. An air filling pipe 112 is inserted into the top of the air injection box 111. A pressure sensor 113 is installed on the side wall of the air injection box 111, and the pressure sensor 113 is communicated with the pressure measurement control unit 2. The pressure sensor 113 can convert the air pressure into an electrical signal and feedback it to the pressure measurement control unit 2.

[0031] The vibrating unit 10 is installed at the top of the lower conical sleeve 4 and is used to vibrate the slurry inside the hole-sealing slurry bag 5. The vibrating unit 10 includes a plurality of circular grooves 101 opened on the upper side wall of the annular ventilation groove 96. A vibrating piston 102 is slidably arranged inside each circular groove 101. A vibrating rod 103 is installed at the top of each vibrating piston 102, and each vibrating rod 103 is slidably connected to the top of the circular groove 101 on the same side. A spring 104 is arranged between each vibrating piston 102 and the side wall of the circular groove 101 on the same side. The air injection monitoring component 11 is equipped with a pneumatic driving component 12. The pneumatic driving component 12 includes a cylinder 121 fixedly inserted into the side wall of the air injection box 111, and a pressure piston 122 is slidably arranged inside the cylinder 121. An electric push rod 123 is fixedly installed on the inner wall of the air injection box 111, and the telescopic end of the electric push rod 123 is fixedly connected to the side wall of the pressure piston 122. The electric push rod 123 is a reciprocating electric push rod 123, and its telescopic end is driven to reciprocate through components such as a reciprocating screw rod inside it.

[0032] An electric control valve 13 is installed inside the air filling pipe 112, and the electric control valve 13 is electrically connected to the pressure measurement control unit 2, which can seal the air filling pipe 112 to prevent gas from flowing back.

[0033] Airtight retaining rings 14 are installed at opposite ends of the two plugging sleeves 6, and both airtight retaining rings 14 are in contact with the end face of the threaded sealing ring 91 on the same side. The airtight retaining ring 14 can improve the sealing performance at the connection between the threaded sealing ring 91 and the plugging sleeve 6.

[0034] Installation pipes 15 are respectively arranged on both sides above the upper conical sleeve 3, and the two installation pipes 15 are inserted through and connected to the inside of the plugging sleeve 6 on the same side. The side wall of the hole-sealing slurry bag 5 is fixedly inserted with a slurry injection pipe 16 and a slurry discharge pipe 17. The tops of the slurry injection pipe 16 and the slurry discharge pipe 17 both pass through the inside of the corresponding installation pipe 15. The slurry injection pipe 16 is used to inject slurry into the hole-sealing slurry bag 5, and the slurry discharge pipe 17 is used to discharge the excess air and slurry inside the hole-sealing slurry bag 5.

[0035] The operating principle of the present invention is described as follows: Pressure measuring holes are drilled at appropriate positions inside the gas tunnel. Then, the sealing grout bladder bag 5 is sleeved outside the pressure measuring tube 1, and both ends of the sealing grout bladder bag 5 are respectively located outside the upper conical sleeve 3 and the lower conical sleeve 4. Subsequently, the two sealing sleeves 6 are screwed into the outside of the corresponding threaded sealing rings 91 in sequence. Since the outer walls of the upper conical sleeve 3 and the lower conical sleeve 4 and the inner walls of the two sealing sleeves 6 are in a conical inclined shape, after the sealing sleeves 6 are screwed in place, the sealing grout bladder bag 5 can be firmly pressed outside the upper conical sleeve 3 and the lower conical sleeve 4 (compared with the traditional method of tying with a tie, the fixing stability and airtightness of the sealing grout bladder bag 5 are better). Then, the grouting pipe 16 and the slurry discharge pipe 17 are respectively passed through the corresponding mounting pipes 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 sealing sleeves 6 have not expanded and bulged at this time, the annular airtight sleeves 8 are not likely to scrape against the rock formation on the hole wall of the pressure measuring hole. Even if there is a scraping phenomenon, since the annular airtight sleeves 8 are deformable, the annular airtight sleeves 8 are not likely to be damaged. At the same time, since the slurry has not been filled into the sealing grout bladder bag 5 at this time, it is also more convenient to insert the sealing grout bladder bag 5 into the pressure measuring hole, thereby improving the installation convenience of inserting the pressure measuring tube 1 into the pressure measuring hole;

[0036] After the pressure measuring tube 1 is inserted into the pressure measuring hole, the air charging pipe 112 is connected to an external air pump, and then the external air pump is controlled to work by the pressure measuring control unit 2. The air pump starts to inject air into the annular airtight channel 92 at the upper conical sleeve 3 through the air charging pipe 112, the air injection box 111 and the air injection pipe 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 another part of the air enters the annular ventilation groove 96 through the connecting hard pipe 94 and the monitoring hose 95, and then enters the lower annular airtight channel 92 through the air outlet hole 97, and finally enters the annular airtight groove 7 through the air inlet hole 98 of the lower sealing sleeve 6. Since the air pressure in the two annular airtight grooves 7 increases, the two annular airtight sleeves 8 start to expand and bulge and abut against the hole wall of the pressure measuring hole. At the same time, the air pressure in the air injection box 111 will also increase synchronously. After the air pressure sensor 113 detects that the air pressure has increased to the threshold value (this 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 in the non-inflated state), 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 air charging pipe 112 to be energized and closed;

[0037] Then wait for 1 minute. When the sharp part in the rock formation of the pressure measuring hole pierces the side wall of the annular airtight sleeve 8, the air in the two annular airtight grooves 7 and the air injection box 111 will flow out. At this time, the air pressure in the air injection box 111 decreases, and the electrical signal fed back by the air pressure sensor 113 to the pressure measurement control unit 2 will disappear. At this time, the pressure measurement control unit 2 will send out a warning message through its own buzzer, etc. After the staff receives the warning message, the pressure measuring pipe 1 should be taken out, and the damaged annular airtight sleeve 8 should be replaced. Then, adjust the insertion depth of the air injection pipe 93 and repeat the above steps until the air pressure sensor 113 does not detect a decrease in air pressure. After 1 minute, the pressure measurement control unit 2 will send out a prompt message to remind the personnel to start the grouting work;

[0038] When carrying out the grouting work, the staff connects the external grouting equipment to the grouting pipe 16, and then starts the external grouting equipment to inject the prepared slurry into the inside of the seal hole slurry bag 5 through the grouting pipe 16. At the same time, the staff starts 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 work. The electric push rod 123 will drive the air pressure piston 122 to move reciprocally (the electric push rod 123 is a reciprocating electric push rod 123, and its internal components such as a reciprocating lead screw drive its telescopic end to move reciprocally). When the air pressure piston 122 moves towards the electric push rod 123, the air pressure 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 vibration pistons 102 inside each circular groove 101 to move upward, and the vibration pistons 102 will drive their own vibration rods 103 to move upward synchronously. When the air pressure piston 122 moves away from the electric push rod 123, the air pressure inside the air injection box 111 decreases. At this time, each air pressure piston 122 starts to move back and reset under the action of the spring 104. By continuously making the vibration pistons 102 drive the vibration rods 103 to move up and down reciprocally during the grouting process, the injected slurry can be vibrated by the vibration rods 103, so that the slurry can fill the seal hole slurry bag 5 more fully and evenly. This not only helps to improve the filling effect of the slurry on the seal hole slurry bag 5, but also after the slurry solidifies, its structural strength is higher, improving the seal hole effect. During the grouting process, the air inside the seal hole slurry bag 5 is discharged through the slurry discharge pipe 17. When the slurry starts to flow out of the slurry discharge pipe 17, block the pipe end of the slurry discharge pipe 17. At this time, since the grouting equipment continues to inject slurry into the inside of the seal hole slurry bag 5, the pressure inside the seal hole slurry bag 5 continuously increases, and the seal hole slurry bag 5 expands and bulges to abut against the inner wall of the pressure measurement hole. When the pressure reaches the set value, stop the grouting equipment and seal the grouting pipe 16 and the slurry discharge pipe 17 (this set pressure value is set based on the aperture of the pressure measurement hole, and a corresponding pressure detection sensor is installed at the grouting end of the grouting equipment to detect the grouting pressure);

[0039] 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 air pressure piston 122 to move back and reset, and then control the electric push rod 123 to stop working. Subsequently, wait for the slurry to solidify. After the grouting is completed, the pressure measurement control unit 2 will record the pressure value detected by the current air pressure sensor 113. During the waiting process, since the pressure inside the slurry gradually increases after it solidifies, the pressure on the monitoring hose 95 will also continuously increase, and the pressure detected by the air pressure sensor 113 will also continuously increase. When there is a leak point on the side wall of the sealing hole slurry bag 5, the slurry inside the sealing hole slurry bag 5 flows out. At this time, the pressure of the slurry inside the sealing hole slurry bag 5 decreases, so the pressure detected by the air pressure sensor 113 will slightly decrease. Therefore, when the air pressure value detected by the air pressure sensor 113 shows a decrease compared with the air pressure value recorded by the pressure measurement control unit 2, it indicates that there may be a leakage phenomenon in the sealing hole slurry bag 5. At this time, the pressure measurement control unit 2 will send out a warning message. After receiving the message, the staff should promptly open the slurry discharge pipe 17, take out the pressure measurement pipe 1, then replace the sealing hole slurry bag 5, and add protective measures around the damaged area of the sealing hole slurry bag 5, such as attaching metal sheets, etc., to avoid the phenomenon that the sealing hole slurry bag 5 is damaged again during the secondary hole sealing;

[0040] After the slurry solidifies (the waiting time for the slurry to solidify varies depending on the prepared slurry), the staff checks whether the pressure measurement pipe 1 is unobstructed. If it is unobstructed, connect the pressure measurement end of the pressure measurement control unit 2 into the pressure measurement pipe 1, observe and record the pressure change. After obtaining a stable pressure value, the pressure measurement work ends.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A gas tunnel pressure measurement device, comprising a pressure measurement pipe (1) and a pressure measurement control unit (2) arranged above the pressure measurement pipe (1), wherein the pressure measurement pipe (1) is inserted into a pressure measurement hole, and is characterized in that, It further includes: An upper conical sleeve (3) fixedly sleeved on the upper side of the outer pipe wall of the pressure measuring pipe (1). A lower conical sleeve (4) is also fixedly sleeved on the lower side of the outer pipe wall of the pressure measuring pipe (1). A sealing hole slurry bag (5) is sleeved outside the upper conical sleeve (3) and the lower conical sleeve (4) together; Two plugging sleeves (6) are respectively sleeved outside the upper conical sleeve (3) and the lower conical sleeve (4), and the two plugging sleeves (6) press and fix the two ends of the sealing hole slurry bag (5) on the outside of the upper conical sleeve (3) and the lower conical sleeve (4) respectively. Annular airtight grooves (7) are opened on the outer side walls of the two plugging sleeves (6), and annular airtight sleeves (8) are installed at the openings of the two annular airtight grooves (7). An air injection unit (9) is commonly installed on the two plugging sleeves (6), and the air injection unit (9) is used to inject air into the two annular airtight grooves (7); A vibrating unit (10) is installed on the top of the lower conical sleeve (4) and is used to vibrate the slurry inside the sealing hole slurry bag (5); The air injection unit (9) includes threaded sealing rings (91) fixedly sleeved on the upper and lower sides of the outer pipe wall of the pressure measuring pipe (1). The two plugging sleeves (6) are both threadedly sleeved outside the threaded sealing rings (91) on the same side. The upper conical sleeve (3), the lower conical sleeve (4), the threaded sealing rings (91) on the same side and the plugging sleeves (6) together enclose an annular airtight channel (92). An air injection pipe (93) is arranged above the upper conical sleeve (3), and the air injection pipe (93) is fixedly inserted into the threaded sealing ring (91) on the same side. A communicating hard pipe (94) is inserted through the end face of the upper conical sleeve (3), and a monitoring hose (95) is fixedly connected to the bottom of the communicating hard pipe (94). An annular ventilation groove (96) is opened on the inner wall of the lower conical sleeve (4), and the annular ventilation groove (96) is communicated with the monitoring hose (95). A plurality of air outlet holes (97) are opened on the lower side wall of the annular ventilation groove (96). A plurality of air inlet holes (98) are opened on the groove walls of the two annular airtight grooves (7), and each air inlet hole (98) is communicated with the annular airtight channel (92) on the same side. An air injection monitoring component (11) is installed at the air inlet end of the air injection pipe (93); The vibrating unit (10) includes a plurality of circular grooves (101) opened on the upper side wall of the annular ventilation groove (96). A vibrating piston (102) is slidably arranged inside each circular groove (101). A vibrating rod (103) is installed on the top of each vibrating piston (102), and each vibrating rod (103) is slidably connected to the top of the circular groove (101) on the same side. A spring (104) is arranged between each vibrating piston (102) and the groove wall of the circular groove (101) on the same side. The air injection monitoring component (11) is installed with a pneumatic driving component (12).

2. The gas tunnel pressure measuring device according to claim 1, characterized in that, The gas injection monitoring component (11) includes a gas injection box (111) fixedly inserted at the end of the gas injection pipe (93). A gas filling pipe (112) is inserted at the top of the gas injection box (111). A barometric pressure sensor (113) is installed on the side wall of the gas injection box (111), and the barometric pressure sensor (113) is communicated with the pressure measurement control unit (2).

3. The gas tunnel pressure measuring device according to claim 2, wherein, The air pressure driving component (12) includes a cylinder barrel (121) fixedly inserted on the side wall of the gas injection box (111). A gas compression piston (122) is slidably arranged inside the cylinder barrel (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).

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

5. The gas tunnel pressure measuring device according to claim 1, characterized in that Airtight retaining rings (14) are installed at opposite ends of the two plugging sleeves (6), and the two airtight retaining rings (14) are respectively abutted against the end faces of the same-side threaded sealing rings (91).

6. The gas tunnel pressure measuring device according to claim 1, characterized in that, Installation pipes (15) are respectively arranged on both sides above the upper conical sleeve (3). The two installation pipes (15) are inserted through the inside of the same-side plugging sleeve (6). A grouting pipe (16) and a slurry discharge pipe (17) are fixedly inserted into the side wall of the hole-sealing slurry sac (5). The tops of the grouting pipe (16) and the slurry discharge pipe (17) both pass through the inside of the corresponding installation pipe (15).

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