While-drilling vibration gas discharging device and method

Abstract

The invention discloses a while-drilling vibration gas discharging device and method, and relates to the field of tunnel engineering, and the while-drilling vibration gas discharging device comprises a pipe sleeve, a central pipe, a vibration mechanism and a driving mechanism; according to the while-drilling vibration gas discharging device, the radial telescopic movement of the vibration mechanism is achieved through the driving assembly and the elastic piece, gas desorption is promoted through vibration of the vibration mechanism, the vibration mechanism is in the form of the arc-shaped contact plate and the vibration rod, the larger contact area is achieved through the arc-shaped contact plate extending in the circumferential direction, and the vibration efficiency is improved. The vibrating bar provides vibration with higher frequency, the effective discharge radius is enlarged, more energy is input to promote pressure relief of a coal seam near the hole, the gas concentration in the hole is improved, desorption and seepage of coal seam gas can be promoted, and the gas discharge efficiency is enhanced. The invention further discloses a gas emission method which can effectively and fully release the gas of the coal seam.

Description

Technical Field

[0001] The present application relates to the field of tunnel engineering, and in particular to a drilling-while-vibration gas emission device and method. Background Art

[0002] With the vigorous promotion of national infrastructure construction, the number of tunnel construction projects has continued to increase, among which tunnels passing through coal-bearing strata have become more and more common. Tunnels passing through coal seams need to be exposed to prevent coal outbursts during construction to ensure the safety of tunnel construction under conventional gas outburst conditions.

[0003] The existing vibrating gas discharge device has the following problems: 1. The drilling equipment must be retracted before the vibrating device for discharging gas is placed into the hole, which makes the operation process complicated and time-consuming; 2. The vibration contact area is limited and effective release cannot be achieved. Summary of the invention

[0004] The embodiments of the present application provide a drilling-while-vibration gas discharge device and method to solve the problems of complex gas desorption operation process and low efficiency.

[0005] In the first aspect, the present application provides a drilling vibration gas emission device, including a sleeve, a center pipe, a vibration mechanism and a driving mechanism; the sleeve is provided with a movable groove along its radial direction; the center pipe is arranged in the sleeve; the vibration mechanism is slidably arranged in the movable groove along the radial direction, and the vibration mechanism can fit on the hole wall; the vibration mechanism includes a main body block, an arc contact plate and a vibration rod; the main body block is slidably arranged in the movable groove; the arc contact plate is arranged at one end of the main body block away from the center pipe, and the arc contact plate can fit on the hole wall; the vibration rod is arranged in the main body block or the arc contact plate, and is used to drive the arc contact plate to vibrate; the driving mechanism includes a driving assembly and an elastic member; the driving assembly is respectively connected to the center pipe and the vibration mechanism, and is used to drive the vibration mechanism to move in the radial direction; the two ends of the elastic member are respectively connected to the center pipe and the vibration mechanism, and the telescopic direction of the elastic member is configured as the radial direction of the sleeve.

[0006] In a second aspect, the present application provides a gas emission method, comprising: The drilling vibration gas discharge device is connected to the drill pipe through a threaded connection and drilled toward the target coal seam along with the drill bit, and the drilling is stopped after entering the coal seam; The drilling vibration gas discharge device is started, and the driving member is controlled to loosen the pull rope. The arc contact plate of the vibration mechanism expands radially outward under the elastic force of the elastic member until the arc contact plate is in close contact with the inner wall of the hole. The vibration rod is started to vibrate, and the vibration load is transmitted to the coal seam through the arc contact plate. The gas in the coal seam is quickly desorbed under the vibration load and enters the hole through the seepage holes on the arc contact plate; Monitor the gas concentration at the hole mouth, and start the drive component when the gas concentration drops to the target value. The output shaft of the drive component rotates to tighten the pull rope and drive the arc contact plate of the vibration mechanism to approach the pipe sleeve radially. Finally, the drilling vibration gas discharge device is pushed out of the hole together with the drill pipe.

[0007] The drilling-while-vibration gas discharge device and method of the present application have at least the following beneficial effects: The emission device of the present application starts with the aspect of increasing the permeability of coal seam gas, and realizes the radial telescopic movement of the vibration mechanism through the driving component and the elastic part. The elastic part can press the vibration mechanism against the hole wall, and promote gas desorption by vibrating the vibration mechanism. After the desorption is completed, the driving component can drive the vibration mechanism to approach the sleeve radially to reduce the overall outer diameter of the drilling vibration gas emission device and enable it to be smoothly withdrawn from the hole. The vibration mechanism of the present application adopts the form of an arc contact plate and a vibration rod. A larger contact area is achieved by the arc contact plate extending in the circumferential direction. The vibration rod provides a higher frequency vibration, which expands the effective emission radius, and allows more energy input to promote the decompression of the coal seam near the hole, thereby increasing the gas concentration in the hole, promoting the desorption and seepage of coal seam gas, and enhancing the efficiency of gas emission. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings: Figure 1 It is a structural schematic diagram of the drilling vibration gas discharge device in this application; Figure 2 is a top view of the drilling vibration gas discharge device in the present application; Figure 3 yes Figure 2 AA view in (CD indicates circumferential direction, RD indicates radial direction); Figure 4 is a schematic diagram of the structure of the vibration mechanism in the present application (with hidden lines shown); Figure 5 It is a schematic diagram of the drilling vibration gas discharge device in the present application being supported on the hole wall (the elastic member is hidden); Figure 6 is a schematic diagram of a driving member in this application; Figure 7 is a schematic diagram of the drilling vibration gas discharge device in the present application when it is working; Figure 8 is a flow chart of the gas emission method in this application; Description of the reference numerals is as follows: 100, pipe sleeve; 110, movable groove; 120, male thread; 130, female thread; 200, center tube; 300, vibration mechanism; 310, main body block; 311, mounting blind hole; 312, end cover; 320, arc-shaped contact plate; 321, seepage hole; 322, protrusion; 330, vibration rod; 400, driving mechanism; 410, driving assembly; 411, driving member; 4111, output shaft; 412, pull rope; 420, elastic member; 500, hole wall; 600, drill bit; 700. Drill pipe. DETAILED DESCRIPTION

[0009] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0010] 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. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0011] like Figure 1 and Figure 2 As shown, this embodiment discloses a drilling-while-vibrating gas discharge device and method. First, the drilling-while-vibrating gas discharge device of this embodiment is introduced. The drilling-while-vibrating gas discharge device includes a pipe sleeve 100, a center pipe 200, a vibration mechanism 300, and a driving mechanism 400; like Figure 1As shown, the shape of the sleeve 100 is cylindrical, and the axial ends of the sleeve 100 are respectively connected to the drill bit 600 and the drill rod 700. In some preferred embodiments, one axial end of the sleeve 100 is provided with a male thread 120, and the male thread 120 is threadedly connected to the drill bit 600. The other axial end of the sleeve 100 is provided with a female thread 130, and the female thread 130 is threadedly connected to one end of the drill rod 700. The sleeve 100 can be used as a part of the drill rod 700 to transmit torque between the drill rod 700 and the drill bit 600, and the threaded connection method can achieve quick connection and has a certain sealing performance.

[0012] like Figure 1 As shown, in this embodiment, the sleeve 100 is provided with a movable groove 110 along its radial direction, the movable groove 110 penetrates the side wall of the sleeve 100 along the radial direction, and the movable groove 110 has a certain length along the axial direction of the sleeve 100, and the specific length value is selected according to the actual situation. The movable groove 110 of this embodiment can provide an escape position for the vibration mechanism 300, and can also play a role of radial guidance for the main block 310 of the vibration mechanism 300.

[0013] like Figure 3 As shown, in some preferred embodiments, there are multiple movable grooves 110, and the multiple movable grooves 110 are arranged at equal intervals along the circumference of the sleeve 100. In this embodiment, there are four movable grooves 110, and the vibration mechanisms 300 are slidably arranged in the movable grooves 110 one by one. By arranging multiple movable grooves 110 and vibration mechanisms 300, a wide range and large area vibration can be provided.

[0014] like Figure 3 As shown, the central tube 200 is disposed in the pipe sleeve 100 . In this embodiment, the central tube 200 is coaxially fixedly disposed in the pipe sleeve 100 . The central tube 200 can provide an installation position for various components of the driving mechanism 400 .

[0015] like Figure 3As shown, the vibration mechanism 300 is slidably arranged in the movable groove 110 along the radial direction, and the vibration mechanism 300 can move in the radial direction and can move to fit with the hole wall 500. In this embodiment, the vibration mechanism 300 includes a main body block 310, an arc contact plate 320 and a vibration rod 330; the main body block 310 is slidably arranged in the movable groove 110, that is, the main body block 310 can slide in the radial direction of the pipe sleeve 100 relative to the movable groove 110; the arc contact plate 320 is arranged on the end of the main body block 310 away from the central pipe 200, and in this embodiment, the arc contact plate 320 and the main body block 310 are preferably formed in one piece to ensure structural strength; the vibration rod 330 is used to generate vibration, and transmit the vibration to the coal seam through the arc contact plate 320 to promote gas desorption. In this embodiment, the vibration rod 330 can be arranged in the main body block 310 or the arc contact plate 320, and the vibration rod 330 is used to drive the arc contact plate 320 to vibrate.

[0016] like Figure 4 As shown, in some preferred embodiments, the main body block 310 is provided with a mounting blind hole 311 for mounting a vibrating rod 330, the depth direction of the mounting blind hole 311 is configured as the axial direction of the pipe sleeve 100, the vibrating rod 330 is arranged in the mounting blind hole 311, and the opening end of the mounting blind hole 311 is provided with an end cover 312, and the end cover 312 is threadedly connected to the mounting blind hole 311. After the vibrating rod 330 is installed in the mounting blind hole 311, the end cover 312 is screwed into the mounting blind hole 311, and the end cover 312 presses the vibrating rod 330 in the mounting blind hole 311. In this embodiment, the vibrating rod 330 can refer to the vibrating rod with its own battery in the prior art.

[0017] like Figure 4 As shown, in some preferred embodiments, the surface of the arc-shaped contact plate 320 facing away from the sleeve 100 is configured as a contact surface that can fit with the hole wall 500, and the contact surface extends a certain length in the circumferential direction and the axial direction. The specific length value can be selected according to actual conditions. For example, the arc length of the contact surface in the circumferential direction is configured to be 1 / 3π to 1 / 2π, and the length of the contact surface in the axial direction is configured to be 1 / 3 to 3 / 4 of the axial length of the sleeve.

[0018] like Figure 4 As shown, in some preferred embodiments, a plurality of seepage holes 321 are provided on the arc-shaped contact plate 320. Under vibration load, the seepage holes 321 facilitate gas to pass through the arc-shaped contact plate 320 and enter the hole. In this embodiment, a plurality of seepage holes 321 are provided in an array on the arc-shaped contact plate 320.

[0019] like Figure 4As shown, in some preferred embodiments, a plurality of protrusions 322 are provided on the contact surface between the arc contact plate 320 and the hole wall 500. The protrusions 322 extend in a direction away from the main block 310 (i.e., radially). The radial height of the protrusions 322 can be selected according to actual conditions, and this embodiment does not limit this. The protrusions 322 can be inserted into the coal seam to increase the vibration contact area, so that the vibration generated by the vibration rod 330 can be more effectively transmitted to the coal seam with the help of the protrusions 322, so as to improve the desorption efficiency.

[0020] like Figure 3 As shown, the driving mechanism 400 includes a driving component 410 and an elastic member 420; the driving component 410 is respectively connected to the central tube 200 and the vibration mechanism 300, and is used to drive the vibration mechanism 300 to move in the radial direction; the two ends of the elastic member 420 are respectively connected to the central tube 200 and the vibration mechanism 300, and the telescopic direction of the elastic member 420 is configured as the radial direction of the sleeve 100.

[0021] Among them, the elastic member 420 is configured as a spring, and the expansion and contraction direction of the elastic member 420 is configured as a radial direction. The elastic member 420 can drive the arc contact plate 320 of the vibration mechanism 300 to fit closely on the inner hole wall of the hole, so that the arc contact plate 320 can effectively transmit vibration. In this embodiment, preferably, the main block 310 of the vibration mechanism 300 is provided with a first mounting groove on the side facing the central tube 200, and the outer circumference of the central tube 200 is provided with a second mounting groove, and the two ends of the elastic member 420 are fixedly provided in the first mounting groove and the second mounting groove respectively. In some preferred embodiments, there are multiple elastic members 420, and each main block 310 of the vibration mechanism 300 is correspondingly connected to four elastic members 420, and the four elastic members 420 are arranged at intervals along the axial direction of the sleeve 100, and the multiple elastic members 420 can tightly press the arc contact plate 320 on the inner hole wall at various positions.

[0022] In some other embodiments, the natural frequency of the elastic member 420 matches the frequency generated by the vibration rod 330, which can produce a resonance phenomenon to amplify the amplitude of the arc-shaped contact plate 320 and effectively promote desorption.

[0023] The driving component 410 is used to realize the radial movement of the vibration mechanism 300 (specifically the arc contact plate 320). In some other embodiments, the driving component 410 directly adopts a telescopic member (such as an electric push rod, etc.) to drive the arc contact plate 320 to move radially. Although this method is feasible, the vibration rod 330 may affect the structure such as the telescopic member rigidly connected to it during operation, thereby reducing its service life. Therefore, in this embodiment, the driving component 410 preferably adopts the following structural form.

[0024] like Figure 5As shown, the driving assembly 410 includes a driving member 411 and a pull rope 412, and the two ends of the pull rope 412 are respectively connected to the output shaft 4111 of the driving member 411 and the main body 310 of the vibration mechanism 300. When the output shaft 4111 of the driving member 411 rotates, it can drive the main body 310 and the arc-shaped contact plate 320 to approach the sleeve 100 radially inward or unwind the pull rope 412, so that the main body 310 and the arc-shaped contact plate 320 are close to the inner hole wall, and then the arc-shaped contact plate 320 can be closely attached to the hole wall 500. Among them, the driving member 411 is fixedly arranged on the outer circumference of the central tube 200, one end of the pull rope 412 is fixed on the output shaft 4111 of the driving member 411 and at least part of the pull rope 412 is wound around the outer circumference of the output shaft 4111, and the other end of the pull rope 412 is fixed on the main body 310. In this embodiment, when the vibration rod 330 is working, since the main block 310 and the output shaft 4111 of the driving member 411 are connected by a pull rope 412 (non-rigid connection), the vibration generated by the vibration rod 330 will not be directly transmitted to the output shaft 4111 through the main block 310, which can increase the service life of the driving member 411 and reduce the installation requirements of the driving member 411 on the central tube 200. Because the vibration will be transmitted to the central tube 200 if a rigid installation method is adopted, it is necessary to design a shock absorbing mechanism between the driving member 411 and the central tube 200.

[0025] like Figure 5 and Figure 6 As shown, in some preferred embodiments, there are multiple driving members 411, and the multiple driving members 411 are circumferentially fixed on the outer periphery of the central tube 200. In this embodiment, four driving members 411 are illustrated, and each driving member 411 is provided with two output shafts 4111. For example, the driving member 411 is configured as a motor with dual output shafts. Two circumferentially adjacent driving members 411 can be used to pull the main body block 310 of a vibration mechanism 300 in the radial direction, specifically: the pull rope 412 has three connection ends, the first connection end of the pull rope 412 is fixedly connected to the main body block 310, the second connection end is connected to the output shaft 4111 of one driving member 411, and the third connection end is connected to the output shaft 4111 of another driving member 411. When the two adjacent driving members 411 rotate synchronously, the main body block 310 and the arc-shaped contact plate 320 can be pulled inward by the pull rope 412, or, when the arc-shaped contact plate 320 needs to be in contact with the inner hole wall, the output shafts 4111 of the two circumferentially adjacent driving members 411 rotate, and the pull rope 412 is unwound, and the arc-shaped contact plate 320 is in contact with the inner hole wall under the action of the elastic member 420. It should be noted that the driving member 411 (motor) of this embodiment has a charging function, and electric energy is stored inside it, and no external wires are required.

[0026] In some preferred embodiments, there may be multiple drive assemblies 410, and the multiple drive assemblies 410 are arranged at intervals along the axial direction of the sleeve 100. The multiple drive assemblies 410 can simultaneously drive the arc contact plate 320 to be smoothly retracted inward or released outward at multiple positions.

[0027] This embodiment also discloses a gas emission method, such as Figure 7 and Figure 8 As shown: When the excavation working face is about 10m away from the coal seam, construction is stopped and on-site survey is carried out to determine the drilling position and hole diameter to ensure the accuracy and safety of the drilling position. According to the design requirements and actual on-site conditions, detailed measurement and layout are carried out to calibrate the specific location of the drilling points, determine the hole spacing and hole angle. Move the drilling vehicle to the working face. During the drilling process, it is necessary to record the starting depth and ending depth of the coal seam in detail to calculate the thickness of the coal seam and select the appropriate specifications of the drilling vibration gas emission device according to the different coal seam thicknesses.

[0028] The gas emission method comprises the following steps Step S100, connect the drilling vibration gas discharge device to the drill rod 700 through a threaded connection and drill toward the target coal seam along with the drill bit 600, and stop drilling after entering the coal seam. Specifically, one end of the pipe sleeve 100 of the drilling vibration gas discharge device is threadedly connected to the drill rod 700, and the drill bit 600 is threadedly connected to the other end of the pipe sleeve 100. When the drill rod 700 is drilling, the pipe sleeve 100 can transmit torque between the drill rod 700 and the drill bit 600. At the same time, before entering the coal seam, the multiple driving members 411 of the driving assembly 410 pull the arc contact plate 320 of the vibration mechanism 300 through the pull rope 412, and the elastic member 420 is in a compressed state at this time; judge whether the drilling vibration gas discharge device has entered the coal seam by the return water and slag situation, and stop drilling when the drilling vibration gas discharge device enters the coal seam; Step S200, start the drilling vibration gas discharge device, control the driving member 411 to loosen the pull rope 412, and the arc contact plate 320 of the vibration mechanism 300 expands radially outward under the elastic force of the elastic member 420 until the arc contact plate 320 is close to the hole wall 500 of the hole, and start the vibration rod 330 to start vibration. The vibration load is transmitted to the coal seam through the arc contact plate 320. The gas in the coal seam is quickly desorbed under the vibration load and enters the hole through the seepage hole 321 on the arc contact plate 320; specifically, the external control system controls the output shaft 4111 of the driving member 411 to rotate and unwind the pull rope 412, so that the arc contact The plate 320 gradually approaches the inner hole wall, and finally the main block 310 of the vibration mechanism 300 and the arc contact plate 320 are pressed against the inner hole wall under the action of the elastic member 420; then the vibration rod 330 is started, and the vibration rod 330 drives the main block 310 and the arc contact plate 320 to vibrate. Since the arc contact plate 320 is in close contact with the inner hole wall, the vibration of the vibration rod 330 can be transmitted to the coal seam to promote desorption, and the gas can enter the hole through the seepage hole 321 on the arc contact plate 320, and then the compressed air is discharged from the drill bit 600, carrying the gas in the hole to flow to the hole mouth and discharged into the air; Step S300, monitor the gas concentration at the orifice, and start the driving member 411 after the gas concentration decreases to the target value. The output shaft 4111 of the driving member 411 rotates to tighten the pull rope 412 and drive the arc contact plate 320 of the vibration mechanism 300 to approach the pipe sleeve 100 in the radial direction. Finally, the drilling vibration gas discharge device is pushed out of the hole together with the drill pipe 700. Specifically, during the discharge process, the gas concentration at the orifice is constantly monitored by the sensor. When the gas concentration decreases to the target value (for example, 0.2 5%), all the driving members 411 work synchronously, and the output shafts 4111 of the driving members 411 rotate synchronously, so that the output shafts 4111 of the driving members 411 reel the pull rope 412, the elastic member 420 is gradually compressed, and the main block 310 and the arc-shaped contact plate 320 gradually move away from the hole wall 500 and approach the sleeve 100 in the radial direction, so that the overall outer diameter of the drilling vibration gas discharge device becomes smaller, and the drilling vibration gas discharge device is retracted to the outside of the hole together with the drill rod 700.

[0029] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A drilling vibration gas discharge device, characterized in that: It includes a pipe sleeve, a center pipe, a vibration mechanism and a driving mechanism; The sleeve is provided with a movable groove along its radial direction; The central tube is arranged in the tube sleeve; The vibration mechanism is slidably arranged in the movable groove along the radial direction, and the vibration mechanism can be attached to the hole wall; the vibration mechanism includes a main body block, an arc-shaped contact plate and a vibration rod; the main body block is slidably arranged in the movable groove; the arc-shaped contact plate is arranged at one end of the main body block away from the central tube, and the arc-shaped contact plate can be attached to the hole wall; the vibration rod is arranged in the main body block or the arc-shaped contact plate, and is used to drive the arc-shaped contact plate to vibrate; The driving mechanism includes a driving component and an elastic member; the driving component is respectively connected to the central tube and the vibration mechanism, and is used to drive the vibration mechanism to move in the radial direction; the two ends of the elastic member are respectively connected to the central tube and the vibration mechanism, and the telescopic direction of the elastic member is configured as the radial direction of the sleeve.

2. The drilling vibration gas discharge device according to claim 1, characterized in that: The two axial ends of the pipe sleeve are respectively threadedly connected with the drill bit and the drill rod.

3. The drilling vibration gas discharge device according to claim 1 or 2, characterized in that: The sleeve is provided with a plurality of movable grooves at intervals along its circumference, and the vibration mechanisms are provided in one-to-one correspondence with the movable grooves.

4. The drilling vibration gas discharge device according to claim 1, characterized in that: The main body block is provided with a mounting blind hole for mounting a vibrating rod, and an end cover is provided at the open end of the mounting blind hole, and the end cover is threadedly connected to the inner wall of the mounting blind hole.

5. The drilling vibration gas discharge device according to claim 4, characterized in that: The arc-shaped contact plate is provided with a plurality of seepage holes in an array.

6. The drilling vibration gas discharge device according to claim 4 or 5, characterized in that: A plurality of protrusions are arranged on the contact surface between the arc-shaped contact plate and the hole wall, and the protrusions extend in a direction away from the main body block.

7. The drilling vibration gas discharge device according to claim 1, 4 or 5, characterized in that: The driving assembly includes a driving member and a pull rope, and the driving member is arranged on the central tube; one end of the pull rope is fixedly connected to the output shaft of the driving member, and the other end of the pull rope is connected to the main body block of the vibration mechanism, and the main body block and the arc contact plate are radially retracted and extended by rotating the output shaft of the driving member.

8. The drilling vibration gas discharge device according to claim 7, characterized in that: The driving assembly includes a plurality of driving members arranged along the circumference of the central tube, each driving member is provided with two output shafts; the pull rope has three connecting ends, the first connecting end of the pull rope is connected to the main body block, and the other two connecting ends are respectively connected to the output shafts of two adjacent driving members.

9. A gas emission method, characterized in that: include: The drilling vibration gas discharge device according to any one of claims 1 to 8 is connected to the drill pipe through a threaded connection and drilled toward the target coal seam along with the drill bit, and the drilling is stopped after entering the coal seam; The drilling vibration gas discharge device is started, and the driving member is controlled to loosen the pull rope. The arc contact plate of the vibration mechanism expands radially outward under the elastic force of the elastic member until the arc contact plate is in close contact with the inner wall of the hole. The vibration rod is started to vibrate, and the vibration load is transmitted to the coal seam through the arc contact plate. The gas in the coal seam is quickly desorbed under the vibration load and enters the hole through the seepage holes on the arc contact plate; Monitor the gas concentration at the hole mouth, and start the drive component when the gas concentration drops to the target value. The output shaft of the drive component rotates to tighten the pull rope and drive the arc contact plate of the vibration mechanism to approach the pipe sleeve radially. Finally, the drilling vibration gas discharge device is pushed out of the hole together with the drill pipe.

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