Borehole blowout preventer system for outburst coal seam drainage

Abstract

The application discloses a drilling hole blowout prevention system for outburst coal seam extraction, which comprises a blowout hole sensing system, wherein the blowout hole sensing system is connected with a control system through a pipeline; the control system is connected with a blockage prevention pressure release device, an automatic adjustable pumping device and a hole mouth sealing device respectively; one side of the blockage prevention pressure release device is connected with the hole mouth sealing device; the automatic adjustable pumping device is connected with a blowout prevention buffer device; and the blowout prevention buffer device is connected with the blockage prevention pressure release device through a lower slag discharge pipe. The drilling hole blowout prevention system can automatically and continuously collect the drilling hole blowout premonitory information through the blowout hole sensing system, realize advanced prediction, and realize active defense through the cooperative operation of the blockage prevention pressure release device, the automatic adjustable pumping device, the blowout prevention buffer device and the hole mouth sealing device, so that the gas over-limit problem in the drilling construction process is effectively solved.

Description

Technical Field

[0001] This invention belongs to the technical field of mine gas control systems, specifically relating to a blowout prevention system for drainage boreholes in outburst-prone coal seams. Background Technology

[0002] Methane gas is the "number one killer" in coal mine safety. Excessive methane levels are a major cause of coal mine gas accidents and endangers the lives of underground workers. If not handled promptly or properly, it can easily lead to gas accidents. Preventing excessive methane levels is a key link and important means of curbing gas accidents. Coal mine gas drainage is a fundamental measure for preventing coal mine gas disasters and a reliable means of reducing methane pressure and content, preventing excessive methane levels, gas explosions, and other disasters. Under complex conditions such as high methane content, high methane pressure, complex stress conditions, tectonic influence zones, and mudstone on the roof and floor, problems such as borehole collapse, blowouts, and excessive methane levels frequently occur during drilling operations. Borehole collapses cause significant problems such as slow construction progress, increased drilling workload, sudden large-scale methane outbursts from boreholes, and inability to meet design coverage requirements. Abnormal methane conditions, methane warnings, and excessive methane levels caused by borehole blowouts pose significant challenges to mine safety management. Summary of the Invention

[0003] The purpose of this invention is to provide a blowout prevention system for drilling boreholes in outburst-prone coal seams, which solves the problem of excessive gas levels caused by blowouts during drilling operations in the prior art.

[0004] The technical solution adopted in this invention is to provide a blowout prevention system for outburst-prone coal seam drainage boreholes, including a blowout detection system. The blowout detection system is connected to a control system via pipelines. The control system is connected to an anti-blocking and pressure relief device, an automatically adjustable drainage device, and a borehole sealing device. One side of the anti-blocking and pressure relief device is connected to the borehole sealing device. The automatically adjustable drainage device is connected to an anti-blowout buffer device, which is connected to the anti-blowout and pressure relief device via a lower slag discharge pipe. The blowout detection system senses high pressure and high flow velocity information at depth in the borehole to predict gas blowouts. The anti-blocking and pressure relief device is used for visual observation and pressure relief in blocked areas, clearing borehole blockages. The automatically adjustable drainage device covers the negative pressure area affecting the entire gas ejection path, drawing the gas into the drainage pipeline. The anti-blowout buffer device acts as a gas buffer, buffering and releasing high-pressure gas. The borehole sealing device is used to close the gas overflow channel at the tail of the drill pipe. The control system is used for remote control and sending control commands.

[0005] The invention is further characterized by:

[0006] The borehole sensing system includes a signal conversion module, which is connected to a signal transmission module and a signal acquisition module. The signal conversion module is used to convert the acquired signals, and the signal transmission module is used to collect, integrate, and output the signals. The signal acquisition module includes a pressure sensor, a flow rate sensor, a low-concentration methane sensor, and a borehole inspection probe. The pressure sensor is used to acquire information on pressure changes inside the borehole, the flow rate sensor is used to acquire information on flow rate changes inside the borehole, the low-concentration methane sensor is used to acquire information on methane concentration changes at the borehole opening, and the borehole inspection probe is used to detect blockages in the extraction borehole.

[0007] The anti-blockage and pressure relief device includes a high-pressure hose, a borehole inspection probe, a bottom 5-way valve, a lower slag discharge pipe, and a high-pressure water jet nozzle. The high-pressure hose provides high-pressure water to the high-pressure water jet nozzle. The borehole inspection probe is used to inspect the blockage of the extraction borehole. The bottom 5-way valve is used to connect the borehole sealing pipe, the upper air vent, the lower slag discharge pipe, and to provide a passage for the drill rod. The lower slag discharge pipe is used to discharge the water-slag mixture from the borehole. The high-pressure water jet nozzle clears the blocked section of the borehole by flushing with high-pressure water, releasing the pressure in the blocked area.

[0008] The automatic adjustable extraction device includes an extraction pipe and an electric control valve for the extraction pipe. The electric control valve for the extraction pipe is used to adjust the negative pressure of extraction, and the extraction pipe provides the extraction channel. Under normal construction conditions, the electric control valve for the extraction pipe is partially opened to reduce the negative pressure of extraction. In the case of gas injection, the electric control valve for the extraction pipe is opened to adjust the negative pressure of extraction and draw gas into the extraction pipe.

[0009] The blowout prevention buffer device includes a pressure relief slag discharge pipe, a buffer airbag, and a gas-liquid separator. The buffer airbag is fitted over the pressure relief slag discharge pipe, and the automatic gas-liquid separator is connected to the bottom of the buffer airbag. Under normal conditions, the pressure relief slag discharge pipe provides a channel for the water-slag mixture. When a gas blowout occurs, the pressure relief slag discharge pipe achieves initial pressure relief of the solid-gas-liquid mixture, while the buffer airbag opens to play a gas buffering role, and the gas-liquid separator discharges the solid-liquid mixture that has been sprayed into the buffer airbag.

[0010] The orifice sealing device includes a flange, a threaded bladder, a compressed air pipeline, and a compressed air pipeline electrically controlled valve. The flange is bolted to the orifice bottom bracket, the threaded bladder is connected to the compressed air pipeline electrically controlled valve, and the compressed air pipeline electrically controlled valve is connected to the compressed air pipeline. When gas erupts in the borehole, the compressed air pipeline electrically controlled valve is opened, and gas is injected into the threaded bladder through the compressed air pipeline, causing the threaded bladder to expand rapidly and automatically tighten the connection gap between the drill rod and the flange.

[0011] The control system comprises a monitoring system and a controller. The monitoring system includes a data acquisition module, a data output module, a mining ring network access device, an industrial Ethernet switch, monitoring substations, and a monitoring host. The data acquisition module is used to collect, classify, and convert electrical signals into digital signals, while the data output module is used to output digital signals to the control system. The controller includes a data processing module and a control module. The data processing module performs statistical analysis and calculations on various digital signals, while the control module is used to control the drilling rig's power-off interlock, remotely control the electrically controlled valves of the extraction pipeline and the compressed air pipeline, and activate the high-pressure water jet nozzles to spray high-pressure water.

[0012] The beneficial effects of this invention are:

[0013] This invention highlights the blowout prevention system for coal seam drainage boreholes, constructing a "six-in-one" gas blowout prevention system characterized by "prediction, plugging prevention, promoting drainage, buffering, sealing, and linkage." Through a blowout sensing system, it dynamically and continuously collects information on early signs of borehole blowouts, enabling advanced prediction. The plugging and pressure relief device, the automatically adjustable promoting drainage device, the blowout prevention buffer device, and the borehole sealing device work together to achieve proactive defense, solving the problem of gas exceeding limits caused by blowouts during drilling and ensuring safe and efficient gas drainage in the mine. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the blowout prevention system for coal seam extraction boreholes according to the present invention;

[0015] Figure 2 This is a schematic diagram of the sensing system in the blowout prevention system of the coal seam extraction borehole of the present invention;

[0016] Figure 3 This is a schematic diagram of the anti-blocking and pressure relief device in the blowout prevention system of the coal seam extraction borehole of the present invention;

[0017] Figure 4 This is a schematic diagram of the blowout prevention buffer device in the blowout prevention system of the coal seam extraction borehole of the present invention;

[0018] Figure 5 This is a schematic diagram of the orifice sealing device in the blowout prevention system for coal seam extraction boreholes of the present invention;

[0019] Figure 6 This is a schematic diagram of the control system in the blowout prevention system of the coal seam extraction borehole of the present invention.

[0020] In the diagram: 1. Blowout sensing system; 2. Anti-clogging and pressure relief device; 3. Automatic adjustable pumping device; 4. Blowout prevention buffer device; 5. Orifice sealing device; 6. Control system; 7. Signal acquisition module; 8. Signal conversion module; 9. Signal transmission module; 10. Pressure sensor; 11. Flow rate sensor; 12. Low-concentration methane sensor; 13. High-pressure hose; 14. Drilling inspection probe; 15. Orifice five-way connector; 16. Lower slag discharge pipe; 17. High-pressure water jet nozzle; 18. 19. Pressure relief and slag discharge pipe; 20. Buffer airbag; 21. Gas-water separator; 22. Flange; 23. Threaded bag; 24. Compressed air pipeline; 25. Compressed air pipeline electrical control valve; 26. Monitoring system; 27. Controller; 28. Data acquisition module; 29. ​​Data output module; 30. Mining ring network access device; 31. Industrial Ethernet switch; 32. Monitoring substation; 33. Monitoring host; 34. Data processing module; 35. Control module. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] Blowout prevention system for coal seam extraction boreholes, such as Figure 1 As shown, the system includes a blowout detection system 1, which is connected to a control system 6 via pipelines. The control system 6 is connected to an anti-blocking pressure relief device 2, an automatic adjustable pumping device 3, and a borehole sealing device 5. One side of the anti-blocking pressure relief device 2 is connected to the borehole sealing device 5. The automatic adjustable pumping device 3 is connected to an anti-blowout buffer device 4, which is connected to the anti-blocking pressure relief device 2 via a lower slag discharge pipe 16. The blowout detection system 1 detects high pressure and high flow velocity information at deep boreholes in advance to comprehensively predict gas blowouts. The anti-blocking pressure relief device 2 detects easily blocked... The system includes a visual observation and pressure relief function for blocked areas, clearing borehole blockages and releasing pressure in the blocked area; an automatic adjustable extraction device 3 covers the negative pressure zone of the extraction to the entire gas ejection path, drawing gas into the extraction pipeline; a blowout prevention buffer device 4 disperses the solid-liquid mixture carried by the nozzle into the buffer device, and the bottom slag discharge port automatically discharges the mixture; a borehole sealing device 5 is used to close the gas overflow channel at the tail of the drill rod, automatically clamping the connection gap between the drill rod and the flange to achieve borehole sealing and prevent gas ejection; and a control system 6 is used for remote control and sending control commands.

[0023] like Figure 2As shown, the borehole sensing system 1 includes a signal conversion module 8, which is connected to a signal transmission module 9 and a signal acquisition module 7. The signal transmission module 9 is connected to the control system 6. The signal conversion module 8 is used to convert various acquired signals, and the signal transmission module 9 is used for signal aggregation, integration, and output. The signal acquisition module 7 includes a pressure sensor 10, a flow velocity sensor 11, a low-concentration methane sensor 12, and a borehole inspection probe 14. The pressure sensor 10 is used to acquire information on pressure changes within the borehole, the flow velocity sensor 11 is used to acquire information on flow velocity changes within the borehole, the low-concentration methane sensor 12 is used to acquire information on methane concentration changes at the borehole opening, and the borehole inspection probe 14 is used to inspect for blockages in the extraction borehole. The signal acquisition module 7 acquires borehole-related information and transmits the acquired information to the control system 6 via the signal converter 8 and the signal transmitter 9.

[0024] like Figure 3 As shown, the anti-blocking and pressure relief device 2 includes a high-pressure hose 13, a borehole inspection probe 14, a five-way connector 15, a lower slag discharge pipe 16, and a high-pressure water jet nozzle 17. The high-pressure hose 13 provides high-pressure water to the high-pressure water jet nozzle 17. The borehole inspection probe 14 is used to inspect the blockage of the extraction borehole. The five-way connector 15 is used to connect the borehole sealing pipe, the upper air vent, the lower slag discharge pipe, and to provide a passage for the drill rod to enter and exit. The lower slag discharge pipe 16 is used to discharge the water-slag mixture from the borehole. The high-pressure water jet nozzle 17 clears the blockage section of the borehole by flushing with high-pressure water and releases the pressure in the blockage area.

[0025] One side of the orifice vent 15 is connected to the orifice sealing device 5, and the other side is connected to a high-pressure hose 13. The end of the high-pressure hose 13 extending into the orifice vent 15 is connected to a borehole inspection probe 14 and a high-pressure water jet nozzle 17. The borehole inspection probe 14 is connected to the signal acquisition module 7, and the high-pressure water jet nozzle 17 is connected to the control system 6. The bottom of the orifice vent 15 is connected to the lower slag discharge pipe 16, and the top of the orifice vent 15 is connected to multiple extraction pipelines. The high-pressure hose 13 extends from the orifice vent 15 into the extraction borehole and moves through the borehole inspection probe 14 to inspect the pipeline blockage. The video signal collected by the borehole inspection probe 14 is processed by the signal conversion module 8. When a blockage occurs in the borehole, the control system 6 controls the high-pressure water jet nozzle 17 to flush the blocked area with high-pressure water, clearing the blocked section of the borehole. The flushed water and slag mixture is discharged through the lower slag discharge pipe 16.

[0026] The automatic adjustable extraction device 3 includes an extraction pipe and an extraction pipe electrical control valve 18. The extraction pipe electrical control valve 18 is used to adjust the extraction negative pressure. The extraction pipe provides the extraction channel. Under normal construction conditions, the extraction pipe electrical control valve 18 is partially opened to reduce the extraction negative pressure. In the case of gas injection, the extraction pipe electrical control valve 18 is opened to adjust the extraction negative pressure, ensuring that a large amount of gas is sucked into the extraction pipe in a short time. The extraction pipe electrical control valve 18 is connected to the control system control device 6 via a cable to achieve remote control.

[0027] like Figure 4 As shown, the blowout prevention buffer device 4 includes a pressure relief discharge pipe 19, a buffer airbag 20, and a gas-liquid separator 21. The buffer airbag 20 is fitted over the pressure relief discharge pipe 19, and the gas-liquid separator 21 is connected to the bottom of the buffer airbag 20. One end of the pressure relief discharge pipe 19 is connected to the end of the lower discharge pipe 16. The pipe body of the pressure relief discharge pipe 19 located inside the buffer airbag 20 has a ventilation groove. The top of the buffer airbag 20 is connected to the extraction pipe, and the bottom of the buffer airbag 20 is connected to the gas-liquid separator 21. Under normal conditions, the pressure relief discharge pipe 19 provides a channel for the water-slag mixture. When a gas blowout occurs, it achieves initial pressure relief of the solid-gas-liquid mixture, which is then sprayed into the buffer airbag 20. At the same time, the buffer airbag 20 opens to buffer the gas again, and the gas is discharged from the extraction pipe. The gas-liquid separator 21 discharges the solid-liquid mixture that has been sprayed into the buffer airbag 20.

[0028] like Figure 5 As shown, the orifice sealing device 5 includes a flange 22, a threaded bag 23, a compressed air pipeline 24, and a compressed air pipeline electrically controlled valve 25. The flange 22 is bolted to the orifice bottom bracket 15. The threaded bag 23 is connected to the compressed air pipeline electrically controlled valve 25, which in turn is connected to the compressed air pipeline 24. The compressed air pipeline electrically controlled valve 25 is connected to the control system 6. The inner diameter of the threaded bag 23 is slightly larger than the diameter of the drill rod. Under normal conditions, the compressed air pipeline electrically controlled valve 25 is closed, and the threaded bag 23 is not open. The gap between the threaded bag 23 and the drill rod ensures unobstructed entry and exit of the drill rod. When gas erupts from the borehole, the compressed air pipeline electrically controlled valve 25 is opened, and the compressed air pipeline 24 injects gas into the threaded bag 23, causing the threaded bag 23 to expand rapidly and automatically tighten the gap between the drill rod and the flange 22, thus sealing the orifice.

[0029] like Figure 6As shown, the control system 6 includes a monitoring system 26 and a controller 27. The monitoring system 26 includes a data acquisition module 28, a data output module 29, a mining ring network access device 30, an industrial Ethernet switch 31, a monitoring substation 32, and a monitoring host 33. The data acquisition module 28 is used to collect, classify, and convert electrical signals into digital signals. The data output module 29 is used to output digital signals to the controller 27. The controller 27 includes a data processing module 34 and a control module 35. The data processing module 34 realizes the statistics, analysis, and calculation of various digital signals. The control module 35 is used to control the drilling rig to shut off and lock, remotely control the electric control valve 18 of the extraction pipeline and the electric control valve 25 of the compressed air pipeline, and open the high-pressure water jet nozzle 17 to spray high-pressure water.

[0030] After the orifice sensing system 1 acquires the orifice information, the signal conversion module 8 and the signal transmission module 9 send the acquired multi-dimensional information to the monitoring substation 32 through the mining ring network access device 30 and the industrial Ethernet switch 31, and finally connect to the monitoring host 33 through the industrial ring network. The monitoring host 33 transmits the multi-dimensional information to the controller 27 through the switch. The controller 27 converts, collects and calculates the received signals through the data processing module 34. The control module 35 controls the drilling rig to shut down and remotely controls the extraction pipeline electrical control valve 18, the compressed air pipeline electrical control valve 25 and the high-pressure water jet nozzle 17.

[0031] The working principle of the blowout prevention system for coal seam extraction boreholes in this invention is as follows:

[0032] Pressure sensor 10 acquires information on pressure changes within the borehole, flow velocity sensor 11 acquires information on flow velocity changes within the borehole, and low-concentration methane sensor 12 acquires information on methane concentration changes at the borehole opening. The acquired information from the eruption is transmitted via signal conversion module 8 and signal transmission module 9 to monitoring substation 32 through mining ring network access device 30 and industrial Ethernet switch 31. Finally, it is connected to monitoring host 33 via industrial ring network. Monitoring host 33 transmits the multi-source information to controller 27 through the switch. Controller 27 remotely controls the drilling rig to stop working. The extraction pipeline at the upper end of the borehole five-way valve 15 quickly draws some of the ejected methane into the double-layer gas-water separator. The double-layer gas-water separator separates the gas and water. The gas is discharged from the main extraction pipe, and the separated mixture is discharged into the sedimentation tank. At the same time, controller 27 monitors the borehole observation... Based on the blockage feedback from probe 14, the high-pressure water jet nozzle 17 is controlled to flush the blockage area with high-pressure water to clear the blockage section of the borehole; at the same time, the controller 27 opens the electric control valve 25 of the compressed air pipeline, and the compressed air pipeline 24 injects gas into the threaded bag 23, causing the threaded bag 23 to expand and automatically tighten the connection gap between the drill rod and the flange 22 to achieve borehole sealing; the high-pressure mixture then enters the pressure relief discharge pipe 19 through the lower slag discharge pipe 16 to achieve the initial pressure relief of the high-speed solid-gas-liquid mixture, and then is sprayed into the buffer air bag 20. The buffer air bag 20 opens quickly to buffer the gas again. At the same time, the controller 27 controls the electric control valve 18 of the extraction pipeline to open, and the gas is discharged from the extraction pipe and flows into the double-layer gas-liquid separator. The gas-liquid separator 21 then discharges the separated solid-liquid mixture from the buffer air bag 20.

[0033] This invention highlights the blowout prevention system for coal seam extraction boreholes, featuring advanced prediction, proactive defense, automatic control, safety and reliability, and system linkage. Through the dynamic, continuous, and automatic acquisition of borehole ejection warning information by the blowout sensing system, it achieves advanced prediction. The anti-blocking and pressure relief device, the automatically adjustable extraction device, the blowout prevention buffer device, and the borehole sealing device work together to achieve proactive defense, effectively solving the gas safety problems caused by gas blowouts during borehole construction.

Claims

1. A blowout prevention system for outburst-prone coal seam extraction boreholes, characterized in that, The system includes a nozzle sensing system (1), which is connected to a control system (6) via a pipeline. The control system (6) is connected to an anti-blocking pressure relief device (2), an automatic adjustable pumping device (3), and an orifice sealing device (5). One side of the anti-blocking pressure relief device (2) is connected to the orifice sealing device (5). The automatic adjustable pumping device (3) is connected to an anti-blowout buffer device (4), which is connected to the anti-blocking pressure relief device (2) via a lower slag discharge pipe (16). (1) Sensing information related to high pressure and high flow rate in the deep borehole to predict gas eruption; Anti-blocking and pressure relief device (2) Used for visual observation and pressure relief in the blockage area to clear borehole blockage; Automatic adjustable pumping device (3) Covers the negative pressure area of ​​the extraction to the entire gas ejection path and sucks the gas into the extraction pipeline; Anti-blowout buffer device (4) Plays the role of gas buffering and buffers and releases high pressure gas; Orifice sealing device (5) Used to close the gas overflow channel at the tail of the drill rod; Control system (6) Used for remote control and sending control commands; The nozzle sensing system (1) includes a signal conversion module (8), which is connected to a signal transmission module (9) and a signal acquisition module (7). The signal conversion module (8) is used to convert the acquired signals, and the signal transmission module (9) is used to summarize, integrate and output the signals. The signal acquisition module (7) includes a pressure sensor (10), a flow rate sensor (11), a low-concentration methane sensor (12) and a borehole inspection probe (14). The pressure sensor (10) is used to acquire information on pressure changes in the borehole, the flow rate sensor (11) is used to acquire information on flow rate changes in the borehole, the low-concentration methane sensor (12) is used to acquire information on methane concentration changes at the borehole opening, and the borehole inspection probe (14) is used to inspect the blockage of the extraction borehole. The anti-blocking and pressure relief device (2) includes a high-pressure hose (13), a borehole inspection probe (14), a five-way connector (15), a lower slag discharge pipe (16), and a high-pressure water jet nozzle (17). The high-pressure hose (13) provides high-pressure water to the high-pressure water jet nozzle (17). The borehole inspection probe (14) is used to inspect the blockage of the extraction borehole. The five-way connector (15) is used to connect the borehole sealing pipe, the upper exhaust port, the lower slag discharge pipe, and to provide a passage for the drill rod to enter and exit. The lower slag discharge pipe (16) is used to discharge the water-slag mixture from the borehole. The high-pressure water jet nozzle (17) clears the blockage section of the borehole by flushing with high-pressure water and releases the pressure in the blockage area. The anti-blowout buffer device (4) includes a pressure relief slag discharge pipe (19), a buffer airbag (20), and a gas-liquid separator (21). The buffer airbag (20) is fitted over the pressure relief slag discharge pipe (19), and the gas-liquid separator (21) is connected to the bottom of the buffer airbag (20). Under normal conditions, the pressure relief slag discharge pipe (19) provides a channel for the water-slag mixture. When a gas blowout occurs, the pressure relief slag discharge pipe (19) achieves the initial pressure relief of the solid-gas-liquid mixture. At the same time, the buffer airbag (20) opens to play a gas buffering role, and the gas-liquid separator (21) discharges the solid-liquid mixture that has been sprayed into the buffer airbag (20).

2. The blowout prevention system for outburst-prone coal seam extraction boreholes according to claim 1, characterized in that, The automatic adjustable extraction device (3) includes an extraction pipe and an extraction pipe electrical control valve (18), wherein the extraction pipe electrical control valve (18) is used to adjust the extraction negative pressure state, and the extraction pipe provides the extraction channel; Under normal construction conditions, the extraction pipeline electrical control valve (18) is partially opened to reduce the extraction negative pressure; under gas injection conditions, the extraction pipeline electrical control valve (18) is opened to adjust the extraction negative pressure and draw gas into the extraction pipeline.

3. The blowout prevention system for outburst-prone coal seam extraction boreholes according to claim 1, characterized in that, The orifice sealing device (5) includes a flange (22), a threaded bag (23), a compressed air pipeline (24), and a compressed air pipeline control valve (25). The flange (22) is bolted to the orifice bottom bracket (15), the threaded bag (23) is connected to the compressed air pipeline control valve (25), and the compressed air pipeline control valve (25) is connected to the compressed air pipeline. When a gas erupts in the borehole, the compressed air pipeline control valve (25) is opened, and the compressed air pipeline (24) injects gas into the threaded bag (23), causing the threaded bag (23) to expand rapidly and automatically tighten the connection gap between the drill rod and the flange (22).

4. The blowout prevention system for outburst-prone coal seam extraction boreholes according to claim 1, characterized in that, The control system (6) includes a monitoring system (26) and a controller (27); wherein the monitoring system (26) includes a data acquisition module (28), a data output module (29), a mining ring network access device (30), an industrial Ethernet switch (31), a monitoring substation (32) and a monitoring host (33). The data acquisition module (28) is used to collect, classify and convert electrical signals into digital signals. The data output module (29) is used to output digital signals to the controller (27). The controller (27) includes a data processing module (34) and a control module (35). The data processing module (34) realizes the statistics, analysis and calculation of various digital signals. The control module (35) is used to control the power outage lock of the drilling rig, remotely control the electric control valve (18) of the extraction pipeline and the electric control valve (25) of the compressed air pipeline, and open the high-pressure water jet nozzle (17) to spray high-pressure water.

Images