A device for eliminating blank zone of gas extraction drilling field in coal seam and use method thereof

Abstract

The present invention provides a device for eliminating the blank zone of the gas extraction drilling site in the coal seam and a method for using the device, which belongs to the field of gas extraction technology. The device includes a first driving motor, a drill bit is provided at the front end of the first rotating shaft, a drill cutter is installed at the front end of the drill bit, a guide module is provided at the rear of the first driving motor, a bendable tough column is installed at the rear of the guide module, a plurality of groups of anti-collapse stable shaft frames are provided on the upper part of the bendable tough column, and the guide module includes a direction adjustment ball, and a direction adjustment hydraulic telescopic shaft frame is provided at the rear of the direction adjustment ball. The present invention adjusts the angle between the direction adjustment hydraulic telescopic shaft frame and the extraction borehole through the guide operating table in the guide module, controls the drill bit and the drill cutter to perform drilling operations according to a preset trajectory, accurately drills the trajectory, and prevents the formation of an extraction blank zone; by conveniently installing a plurality of groups of anti-collapse stable shaft frames in the extraction borehole of the soft coal seam, it is prevented from collapsing during the gas extraction process, resulting in the appearance of a blank zone for treatment.

Description

Technical Field

[0001] The invention belongs to the technical field of gas extraction, and in particular relates to a device for eliminating a blank zone in a gas extraction drilling field in a coal seam and a use method thereof. Background Art

[0002] The geological structure of rock formations can be divided into two types: one is the naturally formed geological movement structure, and the other is the destruction and change caused by human activities. Both of these structural methods have an impact on the rock structure, which can lead to phenomena such as gas extraction blank zones. These phenomena increase the heterogeneity of the rock formation, and the drilling tool will be subjected to uneven force during the drilling process, resulting in a deflected hole trajectory. Especially when the soft and hard layers in the rock formation differ greatly, the effect of drilling hole deflection will be more obvious.

[0003] In recent years, the depth and scale of coal mining have continued to expand. At the same time, the safety risks brought about by this cannot be ignored. As an important cause of coal mine accidents, gas seriously threatens the production safety of coal enterprises and the life and health of miners. In order to effectively control and reduce the risks brought by gas, the application of drilling rig technology in the field of gas extraction has gradually been promoted. However, there are some problems in actual application: First, the drilling rig fails to form the extraction borehole according to the set trajectory due to coal seams and other reasons, which may lead to the emergence of a blank zone for treatment; second, the extraction borehole formed in the soft coal seam is prone to collapse during the extraction process, which may lead to the emergence of a blank zone for treatment, thereby affecting the effect of gas extraction.

[0004] In summary, it is of great significance to carry out research on the technology of eliminating blank zones in gas extraction drilling sites in coal seams. Summary of the invention

[0005] In order to comprehensively solve the above-mentioned problems, especially to address the shortcomings of the prior art, the present invention provides a device for eliminating blank zones in gas extraction drilling sites in coal seams and a method of using the device, which can comprehensively solve the problems that extraction boreholes are not formed according to the set trajectory and extraction boreholes formed in soft coal seams are prone to collapse during the extraction process.

[0006] To achieve the above purpose, the present invention adopts the following technical means:

[0007] In the first aspect, the present invention provides a device for eliminating blank zones in gas extraction drilling sites in coal seams, comprising a first drive motor, a first rotating shaft is installed at the front end of the first drive motor, a drill bit is provided at the front end of the first rotating shaft, a drill cutter is installed at the front end of the drill bit, a guide module is provided at the rear of the first drive motor, a bendable tough column is installed at the rear of the guide module, and a plurality of groups of anti-collapse stabilizing shaft frames are provided on the upper part of the bendable tough column.

[0008] The guide module includes a steering ball, a steering hydraulic telescopic shaft frame is provided at the rear of the steering ball, a steering plate is fixedly installed at the front end of the steering hydraulic telescopic shaft frame, adjusting plate boxes are provided on both sides of the steering plate, and the steering plate is inserted into the adjusting plate box, and three groups of adjusting spring frames are provided in the adjusting plate box, one end of the adjusting spring frame is fixedly connected to the steering plate, and the other end is connected to the inside of the adjusting plate box; a compression frame is provided inside the anti-landslide stabilizing shaft frame, one end of the compression frame is provided with a first stabilizing frame and is fixedly connected to the anti-landslide stabilizing shaft frame, and the other end is connected to the first slide plate.

[0009] Optionally, a positioner is provided inside the first driving motor, a pressure sensor is provided on the upper part of the drill bit, the bendable tough column is externally connected to a power module, and a controller is provided inside the power module.

[0010] Optionally, a second driving motor is provided inside the guide module, a second rotating shaft is provided at the front end of the second driving motor, a guide operating platform is installed at the front end of the second rotating shaft, first slide rails are provided on both sides of the guide operating platform, and a second slide plate is nested in the first slide rails.

[0011] A third driving motor is provided on both sides of the second rotating shaft, a first screw rod is provided at the output end of the third driving motor, a second slide plate is sleeved on the first screw rod, a direction-adjusting rotating rod frame is provided on one side of the second slide plate, a second stabilizing frame is installed on the side of the direction-adjusting rotating rod frame, a hydraulic pump is provided on one side of the second stabilizing frame, a direction-adjusting hydraulic telescopic shaft frame is provided at the front end of the hydraulic pump, and a direction-adjusting ball is provided at the front end of the direction-adjusting hydraulic telescopic shaft frame; two groups of slide grooves are provided on both sides of the guide module, an adjusting plate box is nested in the slide groove, and elastic storage shafts are installed on the upper and lower sides of each group of the slide grooves, an elastic shielding curtain frame is provided inside the elastic storage shaft, one end of the elastic shielding curtain frame is connected to the elastic storage shaft, and the other end is connected to the adjusting plate box.

[0012] Optionally, a clamping ring is clamped on the upper part of the bendable tough column, a clamping seat is provided on the upper part of the clamping ring, a magnetic adsorption plate is provided on the inner side of the clamping seat, a third stabilizing frame is provided on one side of the clamping seat, a first slide is provided on the upper part of the third stabilizing frame, a fourth driving motor is provided on the upper part of the first slide, a second screw rod is provided at the output end of the fourth driving motor, a third slide plate is sleeved on the upper part of the second screw rod, the lower part of the third slide plate is sleeved in the first slide, and a separation push plate is provided at the front end of the third slide plate.

[0013] Optionally, a gas extraction hole is provided in the middle of the upper part of each group of the anti-landslide stabilizing shaft frames, and plug-in frames are installed on both sides of each group of the anti-landslide stabilizing shaft frames.

[0014] Optionally, each group of the anti-collapse stabilizing shaft frame is provided with a fifth drive motor on both sides, the output end of the fifth drive motor is provided with a third screw rod, the upper part of the third screw rod is sleeved with a first slide plate, the bottom of the first slide plate is slidably connected to a second slide seat, the upper part of the first slide plate is provided with a compression frame, and a compression spring is provided inside the compression frame.

[0015] Optionally, a fourth stabilizing frame is provided at the bottom of the fifth driving motor, the fourth stabilizing frame is installed on the upper part of the second slide, two groups of fifth stabilizing frames are provided at the bottom of the second slide, and the fifth stabilizing frame is adsorbed on the magnetic adsorption plate in the card seat.

[0016] In a second aspect, the present invention provides a method for using the device for eliminating a blank zone in a gas extraction drilling field in a soft coal seam according to the first aspect, comprising the following steps:

[0017] S1. Loading a preset extraction plan designed according to the coal seam into the controller;

[0018] S2, installing the anti-collapse stabilizing shaft frame to the upper part of the bendable toughness column through the clamp ring, the magnetic adsorption plate, the fifth stabilizing frame, the compression frame and the first stabilizing frame;

[0019] S3, start the first drive motor and the power module, the drill drills into the coal seam, and then the drill expands the hole. The first drive motor detects the position information in real time to form a drilling trajectory and transmits it to the controller for analysis. The pressure sensor senses the pressure information in the coal seam in real time. When the pressure value is too small, the position information is recorded and transmitted to the controller to be recorded as a soft coal seam.

[0020] S4, when the controller analyzes that the drilling trajectory is inconsistent with the preset extraction plan, the power module stops, the second drive motor starts, and the position of the hydraulic telescopic shaft frame is adjusted, and then the third drive motor starts to adjust the angle of the hydraulic telescopic shaft frame, and then the hydraulic pump starts to expand the hydraulic telescopic shaft frame; the steering ball at the front end of the hydraulic telescopic shaft frame contacts and squeezes the coal seam in the extraction borehole to adjust the angle of the drill bit and the drill cutter, and gradually returns the drilling trajectory to the preset extraction plan;

[0021] S5. After drilling to the set position, the first drive motor stops, the power module works in the reverse direction, and the bendable toughness column pulls the entire device to move outward. When it moves to the position recorded as a soft coal seam, the power module stops;

[0022] S6. At the soft coal seam, the fifth driving motor is started, the anti-collapse stabilizing shaft frame is opened, and is compressed and inserted into the soft coal seam to fix the soft coal seam, so as to prevent it from collapsing during the later gas extraction process and forming a blank zone in the gas extraction drilling field;

[0023] S7. After being inserted into the soft coal seam, the fourth drive motor is started, and the anti-collapse stabilizing shaft frame is separated from the bendable tough column by separating the push plate. Then the power module continues to operate in the reverse direction, and the device is pulled out of the coal seam. Finally, the gas extraction operation is carried out after all the extraction drilling operations are completed.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Convenient drill bit angle adjustment and precise drilling trajectory. The present invention adjusts the angle between the hydraulic telescopic shaft frame and the extraction drilling hole through the guide operating table in the guide module, controls the drill bit and the drill cutter to perform drilling operations according to the preset trajectory, accurately drills the hole trajectory, and prevents the formation of extraction blank zones.

[0026] 2. Preventing drilling hole collapse. The present invention conveniently installs multiple sets of anti-collapse stabilizing shaft frames in the extraction drilling holes of soft coal seams to prevent them from collapsing during gas extraction, resulting in the appearance of blank zones for treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of a device for eliminating a blank zone in a gas extraction drilling field in a coal seam in one embodiment of the present invention;

[0028] Figure 2 It is a partial schematic diagram of a front view of a device for eliminating a blank zone in a gas extraction drilling field in a coal seam in one embodiment of the present invention;

[0029] Figure 3 It is a schematic diagram of the front-end structure of a device for eliminating a blank zone in a gas extraction drilling field in a coal seam in one embodiment of the present invention;

[0030] Figure 4 It is a schematic diagram of the internal structure of the front end of a device for eliminating a blank zone in a gas extraction drilling field in a coal seam in one embodiment of the present invention;

[0031] Figure 5 The present invention Figure 4 A partial enlarged view of the middle part;

[0032] Figure 6 It is a top view and a cross-sectional view of a guide module of a device for eliminating a blank zone in a gas extraction drilling field in a coal seam in one embodiment of the present invention;

[0033] Figure 7 The present invention Figure 6 A partial enlarged view of point B in the middle;

[0034] Figure 8 It is a schematic diagram of the internal structure of a guide module of a device for eliminating a blank zone in a gas extraction drilling field in a coal seam in one embodiment of the present invention;

[0035] Fig. 9It is a left view of the device for eliminating the blank zone of the gas extraction drilling field in the coal seam in one embodiment of the present invention when the power module is not included;

[0036] Fig.10 The present invention Fig. 9 A partial enlarged view of point C in the middle;

[0037] Fig.11 The present invention Fig.10 A partial enlarged view of point D in the middle;

[0038] Fig.12 The present invention is a schematic diagram of the structure of a device for eliminating a blank zone in a gas extraction drilling site in a coal seam in one embodiment.

[0039] In the figure: 1. first drive motor; 2. first rotating shaft; 3. drill bit; 4. drill cutter; 5. guide module; 6. bendable tough column; 7. anti-collapse stabilizing shaft frame; 8. fifth drive motor; 9. power module; 10. coal seam; 11. positioner; 31. pressure sensor; 51. second drive motor; 52. second rotating shaft; 53. guide operating table; 54. third drive motor; 55. hydraulic pump; 56. steering ball; 57. elastic storage shaft; 58. slide; 59. adjustment plate box; 61. snap ring; 62. seat; 63. third stabilizing frame; 64. first slide; 65. fourth drive motor; 71. gas extraction hole; 72. Plug-in rack; 81, third screw rod; 82, first slide plate; 83, compression rack; 84, compression spring; 85, first stabilizing rack; 86, fourth stabilizing rack; 87, second slide seat; 88, fifth stabilizing rack; 91, controller; 101, soft coal seam; 102, extraction drilling hole; 531, first slide rail; 541, first screw rod; 542, second slide plate; 543, direction-adjusting rotating rod rack; 544, second stabilizing rack; 551, direction-adjusting hydraulic telescopic shaft rack; 552, direction-adjusting plate; 571, elastic shielding curtain rack; 591, adjustment spring rack; 621, magnetic adsorption plate; 651, second screw rod; 652, third slide plate; 653, separation push plate. DETAILED DESCRIPTION

[0040] The present invention is further described below in conjunction with the accompanying drawings.

[0041] Embodiment 1:

[0042] like Figures 1 to 3 , Figures 6 to 12As shown, in one embodiment of the present invention, a device for eliminating blank zones in a gas extraction drilling site in a coal seam comprises a first drive motor 1, a first rotating shaft 2 is installed at the front end of the first drive motor 1, a drill bit 3 is provided at the front end of the first rotating shaft 2, a drill cutter 4 is installed at the front end of the drill bit 3, a guide module 5 is provided at the rear of the first drive motor 1, a bendable tough column 6 is installed at the rear of the guide module 5, and a plurality of groups of anti-collapse stabilizing shaft frames 7 are provided on the upper part of the bendable tough column 6; the guide module 5 comprises a steering ball 56, and a steering hydraulic telescopic shaft frame is provided at the rear of the steering ball 56. 551, a direction-adjusting plate 552 is fixedly installed at the front end of the direction-adjusting hydraulic telescopic shaft frame 551, and adjustment plate boxes 59 are arranged on both sides of the direction-adjusting plate 552, and the direction-adjusting plate 552 is inserted into the adjustment plate box 59, and three groups of adjustment spring frames 591 are arranged in the adjustment plate box 59, and one end of the adjustment spring frame 591 is fixedly connected to the direction-adjusting plate 552, and the other end is connected to the inside of the adjustment plate box 59; a compression frame 83 is arranged inside the anti-collapse stabilizing shaft frame 7, and one end of the compression frame 83 is provided with a first stabilizing frame 85 and is fixedly connected to the anti-collapse stabilizing shaft frame 7, and the other end is connected to the first slide plate 82.

[0043] like Figures 1 to 6 As shown, a positioner 11 is provided inside the first driving motor 1 , a pressure sensor 31 is provided on the upper portion of the drill bit 3 , the bendable tough column 6 is externally connected to a power module 9 , and a controller 91 is provided inside the power module 9 .

[0044] Furthermore, the third drive motor 54 is started, and the third drive motor 54 drives the first screw rod 541 to rotate, and the first screw rod 541 drives the second slide plate 542 to move forward and backward, and the direction adjustment hydraulic telescopic shaft frame 551 rotates along with the direction adjustment rotating rod frame 543. At the same time, the direction adjustment plate 552 at the front end of the direction adjustment rotating rod frame 543 rotates synchronously under the action of the three groups of adjustment spring frames 591 in the adjustment plate boxes 59 on both sides thereof, so as to adjust the direction adjustment hydraulic telescopic shaft frame 551 and the extraction drilling hole 102 to form a certain angle.

[0045] Embodiment 2:

[0046] like Figures 6 to 9As shown, in one embodiment of the present invention, a device for eliminating blank zones in gas extraction drilling sites in coal seams, based on embodiment 1, a second drive motor 51 is provided inside the guide module 5, a second rotating shaft 52 is provided at the front end of the second drive motor 51, a guide operating platform 53 is installed at the front end of the second rotating shaft 52, first slide rails 531 are provided on both sides of the guide operating platform 53, a second slide plate 542 is nested in the first slide rail 531; a third drive motor 54 is provided on both sides of the second rotating shaft 52, a first screw rod 541 is provided at the output end of the third drive motor 54, a second slide plate 542 is sleeved on the first screw rod 541, and a second slide plate 542 is sleeved on the second slide plate 542. A steering rod frame 543 is provided on the side, and a second stabilizing frame 544 is installed on the side of the steering rod frame 543. A hydraulic pump 55 is provided on one side of the second stabilizing frame 544. A steering hydraulic telescopic shaft frame 551 is provided at the front end of the hydraulic pump 55. A steering ball 56 is provided at the front end of the steering hydraulic telescopic shaft frame 551. Two groups of slide grooves 58 are provided on both sides of the guide module 5, and an adjusting plate box 59 is nested inside the slide grooves 58. Elastic storage shafts 57 are installed on the upper and lower sides of each group of slide grooves 58. An elastic shielding curtain frame 571 is provided inside the elastic storage shaft 57. One end of the elastic shielding curtain frame 571 is connected to the elastic storage shaft 57, and the other end is connected to the adjusting plate box 59.

[0047] like Figure 10 to Figure 11 As shown, the upper part of the bendable tough column 6 is clamped with a clamping ring 61, the upper part of the clamping ring 61 is provided with a clamping seat 62, the inner side of the clamping seat 62 is provided with a magnetic adsorption plate 621, and one side of the clamping seat 62 is provided with a third stabilizing frame 63, the upper part of the third stabilizing frame 63 is provided with a first slide 64, the upper part of the first slide 64 is provided with a fourth driving motor 65, the output end of the fourth driving motor 65 is provided with a second screw rod 651, the upper part of the second screw rod 651 is sleeved with a third slide plate 652, the lower part of the third slide plate 652 is sleeved in the first slide 64, and the front end of the third slide plate 652 is provided with a separation push plate 653.

[0048] A gas extraction hole 71 is provided in the middle position of the upper part of each group of the anti-landslide stabilizing shaft frame 7, and plug-in frames 72 are installed on both sides of each group of the anti-landslide stabilizing shaft frame 7; a fifth drive motor 8 is provided on both sides of the inside of each group of the anti-landslide stabilizing shaft frame 7, and a third screw rod 81 is provided at the output end of the fifth drive motor 8, a first slide plate 82 is sleeved on the upper part of the third screw rod 81, a second slide seat 87 is slidably connected to the bottom of the first slide plate 82, a compression frame 83 is provided on the upper part of the first slide plate 82, and a compression spring 84 is provided inside the compression frame 83.

[0049] A fourth stabilizing frame 86 is provided at the bottom of the fifth driving motor 8 , and the fourth stabilizing frame 86 is installed on the upper part of the second slide 87 . Two sets of fifth stabilizing frames 88 are provided at the bottom of the second slide 87 , and the fifth stabilizing frames 88 are adsorbed on the magnetic adsorption plate 621 in the card seat 62 .

[0050] like Figures 9 to 12 As shown, the drill bit 4 drills into the coal seam 10 according to the designed trajectory and forms an extraction borehole 102 , and one end of the coal seam 10 is a soft coal seam 101 .

[0051] Further, the first drive motor 1 stops, the power module 9 works in the reverse direction, and the bendable toughness column 6 pulls the entire device to move outward. When it moves to the position recorded as the soft coal seam 101, the power module 9 stops. At the soft coal seam 101, the fifth drive motor 8 is started, and the fifth drive motor 8 drives the third screw rod 81 to rotate, and the third screw rod 81 drives the first slide plate 82 to move, and the first slide plate 82 drives the compression frame 83 to move forward, and the compression frame 83 drives the anti-collapse stabilizing shaft frame 7 to move forward, and then The anti-landslide stabilizing shaft frame 7 is pressed onto the soft coal seam 101, and at the same time, the anti-landslide stabilizing shaft frame 7 is further pressed against the soft coal seam 101 under the action of the compression spring 84, and the plug-in frames 72 installed on both sides of the anti-landslide stabilizing shaft frame 7 are inserted into the soft coal seam 101 to further fix it, so as to achieve the effect that the anti-landslide stabilizing shaft frame 7 is opened and compressed and inserted into the soft coal seam 101 to fix the soft coal seam 101, thereby preventing it from collapsing in the later gas extraction process and forming a blank zone in the gas extraction drilling field.

[0052] Furthermore, after the soft coal seam 101 is fixed, the fourth drive motor 65 is started, the fourth drive motor 65 drives the second screw rod 651 to rotate, the second screw rod 651 drives the third slide plate 652 to slide forward, the third slide plate 652 drives the separation push plate 653 to move forward, the separation push plate 653 pushes the fifth stabilizing frame 88 to separate it from the magnetic adsorption plate 621 in the holder 62, and the anti-collapse stabilizing shaft frame 7 is separated from the bendable tough column 6 through the separation push plate 653, and then the power module 9 continues to operate in reverse, the device is pulled out of the coal seam 10, and finally, the gas extraction operation is carried out after all the extraction drilling operations 102 are completed.

[0053] Working principle:

[0054] The user loads the preset extraction plan designed according to the coal seam into the controller 91 inside the power module 9 in advance, and then installs the anti-collapse stabilizing shaft frame 7 onto the retaining ring 61 on the upper part of the flexible tough column 6 through the magnetic adsorption plate 621, the fifth stabilizing frame 88, the compression frame 83 and the first stabilizing frame 85.

[0055] Start the drilling operation, start the first drive motor 1 and the power module 9, the drill 4 drills into the coal seam 10, and then the drill bit 3 expands the hole and drills according to the preset trajectory. The first drive motor 1 detects the position information in real time to form a drilling trajectory and transmits it to the controller 91 for analysis. When the controller 91 analyzes that the drilling trajectory is inconsistent with the preset extraction plan, the power module 9 stops and the second drive motor 51 starts. The second drive motor 51 drives the second rotating shaft 52 to rotate, and the second rotating shaft 52 drives the guide operating platform 53 to rotate, thereby driving the upper adjustment hydraulic telescopic shaft frame 551 to adjust to a certain position.

[0056] Then the third drive motor 54 is started, and the third drive motor 54 drives the first screw rod 541 to rotate, and the first screw rod 541 drives the second slide plate 542 to move forward and backward, and the direction adjustment hydraulic telescopic shaft frame 551 rotates along with the direction adjustment rotating rod frame 543. At the same time, the direction adjustment plate 552 at the front end of the direction adjustment rotating rod frame 543 rotates synchronously under the action of the three groups of adjustment spring frames 591 in the adjustment plate boxes 59 on both sides thereof, so as to adjust the direction adjustment hydraulic telescopic shaft frame 551 and the extraction drilling hole 102 to form a certain angle.

[0057] Then, the hydraulic pump 55 is started, and the hydraulic telescopic shaft frame 551 is adjusted to expand. The adjustment ball 56 at the front end of the hydraulic telescopic shaft frame 551 is adjusted to contact and squeeze the coal seam 10 in the extraction borehole 102, thereby adjusting the angles of the drill bit 3 and the drill cutter 4, and gradually returning the drilling trajectory to the preset extraction plan.

[0058] During the drilling process, the pressure sensor 31 on the top of the drill bit 3 senses the pressure information in the coal seam 10 in real time. When the pressure value is too small, the position information is recorded and transmitted to the controller 91 to be recorded as a soft coal seam 101.

[0059] After drilling to the set position, the first drive motor 1 stops, the power module 9 works in the reverse direction, and the bendable tough column 6 pulls the entire device to move outward. When it moves to the position recorded as the soft coal seam 101, the power module 9 stops. At the soft coal seam 101, the fifth drive motor 8 is started, and the fifth drive motor 8 drives the third screw rod 81 to rotate, and the third screw rod 81 drives the first slide plate 82 to move, and the first slide plate 82 drives the compression frame 83 to move forward, and the compression frame 83 drives the anti-landslide stabilizing shaft frame 7 to move forward. , and then the anti-landslide stabilizing shaft frame 7 is pressed onto the soft coal seam 101, and at the same time, under the action of the compression spring 84, the anti-landslide stabilizing shaft frame 7 is further pressed against the soft coal seam 101, and the plug-in frames 72 installed on both sides of the anti-landslide stabilizing shaft frame 7 are inserted into the soft coal seam 101 to further fix it, so as to achieve the effect of the anti-landslide stabilizing shaft frame 7 being opened and compressed and inserted into the soft coal seam 101 to fix the soft coal seam 101, thereby preventing it from collapsing in the later gas extraction process and forming a blank zone in the gas extraction drilling field.

[0060] After fixing the soft coal seam 101, start the fourth drive motor 65, the fourth drive motor 65 drives the second screw rod 651 to rotate, the second screw rod 651 drives the third slide plate 652 to slide forward, the third slide plate 652 drives the separation push plate 653 to move forward, the separation push plate 653 pushes the fifth stabilizing frame 88 to separate it from the magnetic adsorption plate 621 in the holder 62, and the anti-collapse stabilizing shaft frame 7 is separated from the bendable tough column 6 through the separation push plate 653, and then the power module 9 continues to operate in reverse, the device is pulled out of the coal seam 10, and finally, the gas extraction operation is carried out after all the extraction drilling operations 102 are completed.

[0061] Embodiment 3:

[0062] This embodiment provides a method for using the device for eliminating the blank zone of the gas extraction drilling field in the soft coal seam in the embodiment 1 or the embodiment 2, and the steps are as follows:

[0063] S1, loading a preset extraction plan designed according to the coal seam into the controller 91;

[0064] S2, installing the anti-collapse stabilizing shaft frame 7 to the upper part of the bendable toughness column 6 through the clamp ring 61, the magnetic adsorption plate 621, the fifth stabilizing frame 88, the compression frame 83 and the first stabilizing frame 85;

[0065] S3, start the first drive motor 1 and the power module 9, the drill 4 drills into the coal seam 10, and then the drill bit 3 expands the hole. The first drive motor 1 detects the position information in real time to form a drilling trajectory and transmits it to the controller 91 for analysis. The pressure sensor 31 senses the pressure information in the coal seam 10 in real time. When the pressure value is too small, the position information is recorded and transmitted to the controller 91 to be recorded as a soft coal seam 101;

[0066] S4, when the controller 91 analyzes that the drilling trajectory is inconsistent with the preset extraction plan, the power module 9 stops, the second drive motor 51 starts, and the position of the hydraulic telescopic shaft frame 551 is adjusted, and then the third drive motor 54 starts to adjust the angle of the hydraulic telescopic shaft frame 551, and then the hydraulic pump 55 starts to expand the hydraulic telescopic shaft frame 551; the steering ball 56 at the front end of the hydraulic telescopic shaft frame 551 contacts and squeezes the coal seam 10 in the extraction borehole 102, thereby adjusting the angles of the drill bit 3 and the drill cutter 4, and gradually returning the drilling trajectory to the preset extraction plan;

[0067] S5. After drilling to the set position, the first drive motor 1 stops, the power module 9 works in the reverse direction, and the bendable toughness column 6 pulls the entire device to move outward. When it moves to the position recorded as the soft coal seam 101, the power module 9 stops;

[0068] S6. At the soft coal seam 101, the fifth drive motor 8 is started, the anti-collapse stabilizing shaft frame 7 is opened, and is compressed and inserted into the soft coal seam 101 to fix the soft coal seam 101, so as to prevent it from collapsing during the later gas extraction process and forming a blank zone in the gas extraction drilling field;

[0069] S7. After being inserted into the soft coal seam 101, the fourth drive motor 65 is started, and the anti-collapse stabilizing shaft frame 7 is separated from the bendable tough column 6 by separating the push plate 653. Then the power module 9 continues to operate in the reverse direction, and the device is pulled out of the coal seam 10. Finally, the gas extraction operation is carried out after all the extraction drilling holes 102 are completed.

[0070] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0071] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for eliminating a blank zone in a gas extraction drilling field in a coal seam, comprising a first drive motor (1), a first rotating shaft (2) being mounted at the front end of the first drive motor (1), characterized in that: A drill bit (3) is provided at the front end of the first rotating shaft (2), a drill cutter (4) is installed at the front end of the drill bit (3), a guide module (5) is provided at the rear of the first driving motor (1), a bendable tough column (6) is installed at the rear of the guide module (5), and a plurality of anti-collapse stabilizing shaft frames (7) are provided on the upper part of the bendable tough column (6); The guide module (5) comprises a steering ball (56), a steering hydraulic telescopic shaft frame (551) is provided at the rear of the steering ball (56), a steering plate (552) is fixedly installed at the front end of the steering hydraulic telescopic shaft frame (551), both sides of the steering plate (552) are provided with a steering plate box (59), and the steering plate (552) is inserted into the steering plate box (59), and three groups of adjustment spring frames (591) are provided in the steering plate box (59), one end of the adjustment spring frame (591) is fixedly connected to the steering plate (552), and the other end is connected to the inside of the steering plate box (59); A compression frame (83) is provided inside the anti-collapse stabilizing shaft frame (7); one end of the compression frame (83) is provided with a first stabilizing frame (85) which is fixedly connected to the anti-collapse stabilizing shaft frame (7); and the other end is connected to a first slide plate (82).

2. The device for eliminating the blank zone of the gas extraction drilling field in the coal seam according to claim 1 is characterized in that: A positioner (11) is provided inside the first drive motor (1), a pressure sensor (31) is provided on the upper part of the drill bit (3), the bendable tough column (6) is externally connected to a power module (9), and a controller (91) is provided inside the power module (9).

3. The device for eliminating the blank zone of the gas extraction drilling field in the coal seam according to claim 2 is characterized in that: A second drive motor (51) is provided inside the guide module (5), a second rotating shaft (52) is provided at the front end of the second drive motor (51), a guide operating platform (53) is installed at the front end of the second rotating shaft (52), first slide rails (531) are provided on both sides of the guide operating platform (53), and a second slide plate (542) is embedded in the first slide rail (531).

4. The device for eliminating the blank zone of the gas extraction drilling field in the coal seam according to claim 3 is characterized in that: A third driving motor (54) is provided on both sides of the second rotating shaft (52); a first screw rod (541) is provided at the output end of the third driving motor (54); a second slide plate (542) is sleeved on the first screw rod (541); a direction-adjusting rotating rod frame (543) is provided on one side of the second slide plate (542); a second stabilizing frame (544) is installed on the side of the direction-adjusting rotating rod frame (543); a hydraulic pump (55) is provided on one side of the second stabilizing frame (544); a direction-adjusting hydraulic telescopic shaft frame (551) is provided at the front end of the hydraulic pump (55); a direction-adjusting ball (56) is provided at the front end of the direction-adjusting hydraulic telescopic shaft frame (551); Two groups of slide grooves (58) are provided on both sides of the guide module (5), and a plate adjustment box (59) is nested inside the slide grooves (58). An elastic storage shaft (57) is installed on the upper and lower sides of each group of slide grooves (58), and an elastic shielding curtain frame (571) is provided inside the elastic storage shaft (57). One end of the elastic shielding curtain frame (571) is connected to the elastic storage shaft (57), and the other end is connected to the plate adjustment box (59).

5. The device for eliminating the blank zone of the gas extraction drilling field in the coal seam according to claim 4 is characterized in that: A clamping ring (61) is clamped on the upper part of the bendable tough column (6), a clamping seat (62) is provided on the upper part of the clamping ring (61), a magnetic adsorption plate (621) is provided on the inner side of the clamping seat (62), a third stabilizing frame (63) is provided on one side of the clamping seat (62), a first slide seat (64) is provided on the upper part of the third stabilizing frame (63), a fourth drive motor (65) is provided on the upper part of the first slide seat (64), a second screw rod (651) is provided at the output end of the fourth drive motor (65), a third slide plate (652) is sleeved on the upper part of the second screw rod (651), the lower part of the third slide plate (652) is sleeved in the first slide seat (64), and a separation push plate (653) is provided at the front end of the third slide plate (652).

6. The device for eliminating the blank zone of the gas extraction drilling field in the coal seam according to claim 5 is characterized in that: A gas extraction hole (71) is provided at the middle position of the upper part of each group of the anti-collapse stabilizing shaft frames (7), and plug-in frames (72) are installed on both sides of each group of the anti-collapse stabilizing shaft frames (7).

7. The device for eliminating the blank zone of the gas extraction drilling field in the coal seam according to claim 6 is characterized in that: A fifth drive motor (8) is provided on both sides of each group of the anti-collapse stabilizing shaft frames (7); a third screw rod (81) is provided at the output end of the fifth drive motor (8); a first slide plate (82) is sleeved on the upper part of the third screw rod (81); a second slide seat (87) is slidably connected to the bottom of the first slide plate (82); a compression frame (83) is provided on the upper part of the first slide plate (82); and a compression spring (84) is provided inside the compression frame (83).

8. The device for eliminating the blank zone of the gas extraction drilling field in the coal seam according to claim 7 is characterized in that: A fourth stabilizing frame (86) is provided at the bottom of the fifth driving motor (8), and the fourth stabilizing frame (86) is mounted on the upper part of the second slide seat (87). Two groups of fifth stabilizing frames (88) are provided at the bottom of the second slide seat (87), and the fifth stabilizing frames (88) are adsorbed on the magnetic adsorption plate (621) in the clamping seat (62).

9. The device for eliminating the blank zone of the gas extraction drilling field in the coal seam according to claim 8, characterized in that: The drill bit (4) drills into the coal seam (10) according to a designed trajectory and forms an extraction borehole (102), and one end of the coal seam (10) is a soft coal seam (101).

10. A method for using the device for eliminating the blank zone in the gas extraction drilling field in the coal seam according to claim 9, characterized in that: The steps include: S1, loading a preset extraction plan designed according to the coal seam into the controller (91); S2, installing the anti-collapse stabilizing shaft frame (7) onto the upper part of the bendable tough column (6) through the clamping ring (61), the magnetic adsorption plate (621), the fifth stabilizing frame (88), the compression frame (83) and the first stabilizing frame (85); S3, starting the first drive motor (1) and the power module (9), the drill (4) drills into the coal seam (10), and then the drill bit (3) expands the hole, the first drive motor (1) detects the position information in real time to form a drilling trajectory and transmits it to the controller (91) for analysis, the pressure sensor (31) senses the pressure information in the coal seam (10) in real time, and when the pressure value is too small, the position information is recorded and transmitted to the controller (91) to be recorded as a soft coal seam (101); S4, when the controller (91) analyzes that the drilling trajectory is inconsistent with the preset extraction plan, the power module (9) stops, the second drive motor (51) starts, and the position of the hydraulic telescopic shaft frame (551) is adjusted, then the third drive motor (54) is started, and the angle of the hydraulic telescopic shaft frame (551) is adjusted, then the hydraulic pump (55) is started, and the hydraulic telescopic shaft frame (551) is unfolded; the steering ball (56) at the front end of the hydraulic telescopic shaft frame (551) contacts and squeezes the coal seam (10) in the extraction borehole (102), thereby adjusting the angles of the drill bit (3) and the drill bit (4), and gradually returning the drilling trajectory to the preset extraction plan; S5, after the hole is drilled to the set position, the first drive motor (1) stops, the power module (9) operates in the reverse direction, and the bendable tough column (6) pulls the entire device to move outward. When the device moves to the position recorded as the soft coal seam (101), the power module (9) stops; S6. At the soft coal seam (101), the fifth drive motor (8) is started, the anti-collapse stabilizing shaft frame (7) is opened, and is compressed and inserted into the soft coal seam (101) to fix the soft coal seam (101) to prevent it from collapsing during the later gas extraction process and forming a blank zone in the gas extraction drilling field; S7, after being inserted into the soft coal seam (101), the fourth drive motor (65) is started, and the anti-collapse stabilizing shaft frame (7) is separated from the bendable tough column (6) by separating the push plate (653), and then the power module (9) continues to operate in the reverse direction, and the device is pulled out of the coal seam (10), and finally the gas extraction operation is carried out after all the extraction drilling holes (102) are completed.

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