Pressing-pumping-spraying intelligent cooperative dust control and removal experiment platform and method for digging and anchoring surface

Abstract

The invention discloses a digging and anchoring surface'pressing-pumping-spraying 'intelligent cooperative dust control and removal experiment platform, which comprises an operation simulation system, a dust removal simulation system and an intelligent centralized control system, and is characterized in that the intelligent centralized control system comprises an industrial personal computer, and the industrial personal computer is used for driving and adjusting the operation simulation system and the dust removal simulation system; the operation simulation system comprises a digging and anchoring all-in-one machine and a belt conveyor, a plurality of groups of sensors are arranged in the roadway at intervals, each group of sensors comprises a roadway dust concentration sensor and a roadway gas concentration sensor, and the detection output end of each roadway dust concentration sensor is connected with the roadway dust detection signal input end of the industrial personal computer. The detection output ends of the roadway gas concentration sensors are connected with the roadway gas detection signal input end of the industrial personal computer; the dust removal simulation system comprises a pressure fan, a dust removal fan and a local pressure fan. Different working conditions can be simulated and verified, and an efficient, accurate and dynamically optimized comprehensive treatment scheme can be obtained.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine dust removal, in particular to an "pressure-extraction-spraying" intelligent collaborative control dust removal experimental platform and method for tunneling and anchoring surfaces. BACKGROUND

[0002] During the process of coal mine tunneling, a large amount of suspended dust is continuously generated due to mechanical crushing of rock mass and material transfer. These dusts not only significantly reduce the visibility of the working surface, affecting the normal operation of equipment and the tunneling efficiency, but also pose a serious threat to the respiratory health of workers, and may even cause dust explosion under certain conditions, posing a great hidden danger to mine safety production. The dust removal technologies currently used in underground mines mostly still rely on single means, such as local fan drainage or fixed-point spraying and watering, which have obvious limitations. Such systems often have a lag in response and are difficult to dynamically adjust according to the dust generation point changes and air flow field state, with limited dust removal efficiency, especially insufficient ability to capture respirable dust. Although some improved systems have added fan frequency conversion or spraying timing functions, the overall structure still does not realize the collaborative linkage between the fan, air curtain generator, and spraying device, and lacks intelligent feedback and optimization control mechanisms based on real-time dust concentration monitoring. In the face of the complex environment of the tunneling working surface with variable geological conditions and large fluctuation of dust generation intensity, the traditional dust removal method is not adaptive enough and cannot form an effective closed-loop control. Therefore, there is an urgent need for a new comprehensive management solution. SUMMARY

[0003] The present application aims to solve the technical problems existing in the prior art and particularly innovatively proposes an "pressure-extraction-spraying" intelligent collaborative control dust removal experimental platform and method for tunneling and anchoring surfaces, which can simulate and verify different working conditions and obtain an efficient, accurate, and dynamically optimized comprehensive management solution.

[0004] To achieve the above-mentioned purpose, the present application provides an "pressure-extraction-spraying" intelligent collaborative control dust removal experimental platform for tunneling and anchoring surfaces, which comprises a work simulation system, a dust removal simulation system, and an intelligent control system. The intelligent control system comprises an industrial computer, which is used to drive and adjust the work simulation system and the dust removal simulation system. The work simulation system comprises a tunneling and anchoring integrated machine and a belt conveyor arranged in a tunnel. The tunneling and anchoring integrated machine drive signal input end is connected to the industrial computer tunneling and anchoring drive signal output end, and the displacement sensor position signal output end of the tunneling and anchoring integrated machine is connected to the industrial computer position signal input end. The belt conveyor drive signal input end is connected to the industrial computer transportation drive signal output end.

[0005] The roadway is provided with a plurality of groups of sensors at the operating platform and in the air return channel, each group of sensors comprising a roadway dust concentration sensor and a roadway gas concentration sensor, the detection output end of the roadway dust concentration sensor being connected to the dust detection signal input end of the industrial computer, and the detection output end of the roadway gas concentration sensor being connected to the gas detection signal input end of the industrial computer.

[0006] The dust removal simulation system comprises a pressure fan, a dust removal fan and a local pressure fan, the local pressure fan is arranged in the middle of the roadway, and a longitudinal full-section air curtain dust control device is connected to the air outlet of the local pressure fan, the internal space of the roadway is divided into two sections by the longitudinal full-section air curtain dust control device through an air curtain; the air curtain injection angle signal input end of the longitudinal full-section air curtain dust control device is connected to the air curtain angle signal output end of the industrial computer.

[0007] The air outlet of the dust removal fan is connected to the air suction cylinder, and the other end of the air suction cylinder is arranged near the cutting head of the combined excavating and anchoring machine; the air outlet of the pressure fan is connected to the pressure cylinder, and the other end of the pressure cylinder is arranged near the discharge port of the combined excavating and anchoring machine; the pressure fan, the dust removal fan and the local pressure fan are each provided with an automatic walking device, and the automatic walking device drives the pressure fan, the dust removal fan and the local pressure fan to move forward and backward.

[0008] In the above scheme, the pressure fan, the dust removal fan and the local pressure fan are each provided with a frequency converter, the frequency conversion signal input end of the pressure fan frequency converter is connected to the pressure frequency conversion signal output end of the industrial computer, the frequency conversion signal input end of the dust removal fan frequency converter is connected to the dust removal frequency conversion signal output end of the industrial computer, and the frequency conversion signal input end of the local pressure fan frequency converter is connected to the local pressure frequency conversion signal output end of the industrial computer.

[0009] In the above scheme, two excavating and anchoring dust concentration sensors and one excavating and anchoring gas concentration sensor are arranged at the cutting head of the combined excavating and anchoring machine, the detection output end of the excavating and anchoring dust concentration sensor is connected to the excavating and anchoring dust detection signal input end of the industrial computer, and the detection output end of the excavating and anchoring gas concentration sensor is connected to the excavating and anchoring gas detection signal input end of the industrial computer; the rack of the belt conveyor is provided with a conveying dust concentration sensor at each end, and the conveying dust concentration sensor detection data output end is connected to the conveying dust detection data input end of the industrial computer.

[0010] In the above scheme, the industrial computer is provided with a wireless communication module, and is wirelessly connected to each dust concentration sensor, each gas concentration sensor, each frequency converter, the belt conveyor and the combined excavating and anchoring machine through the wireless communication module.

[0011] The data storage signal output end of the industrial computer is connected to the data storage signal input end of the data storage unit.

[0012] In the scheme, the intelligent centralized control system further comprises a man-machine interactive interface, the man-machine interactive interface comprises a display and an input device, the display can display real-time environmental data and equipment operating state, and the input device is used for inputting initial parameters of each equipment to support manual adjustment of parameters and ensure controllability in extreme cases.

[0013] In the scheme, the air suction cylinder and the air pressure cylinder are both mine flexible flame-retardant air cylinders, and both ends of the air suction cylinder and the air pressure cylinder are provided with automatic telescopic devices.

[0014] In the scheme, all sensors are IP65 level sensors, and the installation height of the sensors is 1.5-1.8 m from the roadway floor.

[0015] The application also provides an experimental method for excavating and anchoring surface "pressure-suction-jet" intelligent collaborative dust control, comprising the experimental platform for excavating and anchoring surface "pressure-suction-jet" intelligent collaborative dust control in the scheme, and the following steps:

[0016] S1: determining the cutting speed according to the roadway and the coal seam hardness, and estimating the dust production intensity;

[0017] S2: setting initial parameters of the air pressure fan, the dust removal fan, the local air pressure fan and the longitudinal full-section air curtain dust control device, and generating an initial dust control scheme through the industrial computer;

[0018] S3: starting the excavating and anchoring integrated machine;

[0019] S4: each dust concentration sensor and gas concentration sensor sends a dust concentration detection signal and a gas concentration detection signal to the industrial computer in real time, the industrial computer sends the received detection data to the display, and the display displays the concentration change curve and the equipment operating state in real time; at the same time, the industrial computer drives the air pressure fan, the dust removal fan, the local air pressure fan and the longitudinal full-section air curtain dust control device to perform dust removal according to the initial dust control scheme;

[0020] S5, S6, S7 and S8 are executed at the same time;

[0021] S5: if the dust concentration exceeds the safety threshold, dust treatment is performed;

[0022] S6: if the gas concentration exceeds the warning value, stop the experiment and alarm, emergency ventilation and gas relief, and resume the experiment when the concentration is below the safety value;

[0023] S7: storing data in real time;

[0024] S8: adjusting the frequency and position of the air pressure fan, the dust removal fan and the local air pressure fan according to the running data and the environmental data.

[0025] In the scheme, the dust treatment in step S5 comprises the following steps:

[0026] S5-1: increasing the frequency of the fan; the industrial computer simultaneously sends an instruction to increase the frequency to the frequency converters of the pressure fan and the dust removal fan;

[0027] S5-2: adjusting the wind curtain injection angle; the industrial computer sends an instruction to adjust the wind curtain injection angle to the longitudinal full-section wind curtain dust control device according to the over-dust area;

[0028] S5-3: adjusting the wind curtain injection angle;

[0029] S5-4: adjusting the fan position; the industrial computer sends an instruction to the automatic walking device to move closer to the combined drilling and bolting machine, and drives the pressure fan, the dust removal fan, the local pressure fan and the longitudinal full-section wind curtain dust control device to move to the combined drilling and bolting machine through the automatic walking device;

[0030] S5-5: repeating steps S5-1 to S5-4 until the dust concentration meets the standard, and at the same time, monitoring the total current of the pressure fan, the dust removal fan and the local pressure fan through the industrial computer to prevent overload.

[0031] In the above scheme, step S6 further comprises the following steps:

[0032] S6-1: reducing the frequency of the fan and alarming; the industrial computer simultaneously sends an instruction to reduce the frequency to the frequency converters of the pressure fan and the dust removal fan; and S6-2 is executed at the same time;

[0033] S6-2: if the gas concentration exceeds the limit value, the industrial computer stops the combined drilling and bolting machine and the belt conveyor, suspends the operation, and starts emergency ventilation to discharge the gas, and when the concentration is reduced to below the safety value, the industrial computer starts the combined drilling and bolting machine and the belt conveyor to resume the operation;

[0034] Step S7 further comprises the following steps:

[0035] S7-1: storing the running data; the industrial computer sends the real-time acquired working conditions of the combined drilling and bolting machine, the working conditions of the belt conveyor, the wind curtain injection angle of the longitudinal full-section wind curtain dust control device and the frequencies of the corresponding frequency converters of the pressure fan, the dust removal fan and the local pressure fan to the data storage unit for storage;

[0036] S7-2: storing the environmental data; the industrial computer stores the detection data of each dust concentration sensor and each gas concentration sensor to the data storage unit.

[0037] In summary, the beneficial effects of the present application are: the multiple sensors, pressure fans, dust removal fans, local pressure fans, longitudinal full-section wind curtain dust control devices and automatic walking devices are set to change the airflow parameters by the pressure fans, dust removal fans and local pressure fans, the longitudinal full-section wind curtain dust control devices form a full-coverage dust barrier, the automatic walking devices and the automatic telescopic devices realize dynamic adjustment of the equipment position, the real-time sensing data acquisition and parameter control of the intelligent centralized control system are combined to realize intelligent and adaptive dust control and management process of the excavation and anchor working face, and a comprehensive dust control experimental platform with comprehensive perception, intelligent decision-making, precise execution and continuous optimization capability is constructed, so that the source inhibition, process blocking and efficient purification of the working face dust are realized, and the safety level of the excavation working face is improved. The longitudinal full-section wind curtain dust control device can cover the entire roadway section, effectively block the dust diffusion, and realize efficient dust blocking; the automatic walking device can realize the independent movement of the pressure fan, the dust removal fan, the local pressure fan and the longitudinal full-section wind curtain dust control device, and adjust the distance from the excavation and anchor integrated machine, so as to adjust the dust removal position; the frequency converter can adjust the frequency of the pressure fan, the dust removal fan and the local pressure fan, so as to adjust the power of the pressure fan, the dust removal fan and the local pressure fan, so as to verify the efficient, precise and dynamically optimized system solution under different working conditions, and through the collaborative operation and intelligent control of multiple devices, the physical health of the coal mine workers and the safety production of the mine are ensured. At the same time, the experimental platform can dynamically optimize the dust control parameters according to different operation scenes, such as different excavation speeds, dust production intensities and roadway sizes, so as to provide technical support for improving the dust control efficiency and reducing the dust hazards. BRIEF DESCRIPTION OF DRAWINGS

[0038] Fig. 1 is a perspective view of the present application.

[0039] Fig. 2 is a side view of the pressure fan, the dust removal fan, the local pressure fan, the automatic walking device and the belt conveyor.

[0040] Fig. 3 is a system diagram of the intelligent centralized control system. DETAILED DESCRIPTION

[0041] The present application will be further described below by examples and in conjunction with the drawings:

[0042] As shown in Figs. 1-3 , an excavation and anchor face "pressure-extraction-injection" intelligent collaborative dust control and removal experimental platform includes a working simulation system, a dust removal simulation system and an intelligent centralized control system, the intelligent centralized control system includes an industrial computer, a wireless communication module and a data storage unit, and the industrial computer, the wireless communication module and the data storage unit are installed in the mine explosion-proof control cabinet. The industrial computer is used to drive and adjust the working simulation system and the dust removal simulation system.

[0043] The operation simulation system comprises a combined drilling and bolting machine 1 and a belt conveyor 2 arranged in the roadway, the combined drilling and bolting machine 1 adopts a conventional combined drilling and bolting machine in a mine, has the functions of cutting and bolting, and is provided with a displacement sensor on the machine body, and the displacement sensor of the combined drilling and bolting machine 1 is connected to a position signal input end of an industrial computer.

[0044] A plurality of groups of sensors are arranged at intervals of 5-8 m near the operation platform of the workers in the roadway and in the air return channel, each group of sensors comprises a roadway dust concentration sensor and a roadway gas concentration sensor, the detection output ends of the roadway dust concentration sensors are connected to a roadway dust detection signal input end of the industrial computer, and the detection output ends of the roadway gas concentration sensors are connected to a roadway gas detection signal input end of the industrial computer; two combined drilling and bolting dust concentration sensors and one combined drilling and bolting gas concentration sensor are arranged at the cutting head of the combined drilling and bolting machine 1, the detection output ends of the combined drilling and bolting dust concentration sensors are connected to a combined drilling and bolting dust detection signal input end of the industrial computer, and the detection output ends of the combined drilling and bolting gas concentration sensor are connected to a combined drilling and bolting gas detection signal input end of the industrial computer.

[0045] The belt conveyor 2 is used for conveying the coal and rock cut by the combined drilling and bolting machine 1, one end of the belt conveyor 2 is located behind the combined drilling and bolting machine 1, and the other end extends to the end of the roadway, and the rack of the belt conveyor 2 is provided with a conveying dust concentration sensor at each end, and the detection data output ends of the conveying dust concentration sensors are connected to a conveying dust detection data input end of the industrial computer.

[0046] The dust removal simulation system comprises a compressed air fan 3, a dust removal fan 4, a local compressed air fan 5, a compressed air cylinder 7, an air exhaust cylinder 6, a longitudinal full-section air curtain dust control device 8 and an automatic walking device 9, the compressed air fan 3, the dust removal fan 4 and the local compressed air fan 5 are arranged at intervals from back to front, the local compressed air fan 5 is arranged at the middle part of the roadway, the air outlet of the local compressed air fan 5 is connected to the longitudinal full-section air curtain dust control device 8, the internal space of the roadway is divided into two sections by the longitudinal full-section air curtain dust control device 8 through an air curtain, and the air curtain spray angle signal input end of the longitudinal full-section air curtain dust control device 8 is connected to an air curtain angle signal output end of the industrial computer.

[0047] The suction duct 6 is communicated with the dust removal fan 4, and the suction duct 6 is arranged at the cutting head of the combined anchor and tunneling machine 1. The air pressure duct 7 is communicated with the air pressure fan 3, and the other end of the air pressure duct 7 is arranged at the discharge port of the combined anchor and tunneling machine 1. The installation support is arranged in the tunnel corresponding to the suction duct 6 and the air pressure duct 7, and the suction duct 6 and the air pressure duct 7 are both mine flexible fire-retardant air ducts with diameters of 800 mm and 600 mm respectively. The automatic telescopic device is arranged at both ends of the suction duct 6 and the air pressure duct 7, the automatic telescopic device adopts a sleeve type structure driven by hydraulic pressure, is connected with the suction duct 6 and the air pressure duct 7 through flanges, and has a telescopic length range of 0-5 m. The length of the air duct can be adjusted synchronously according to the position change of the corresponding air pressure fan 3 and dust removal fan 4, so as to avoid the air flow loss caused by the too long suction duct 6 or air pressure duct 7 or the insufficient dust control range caused by the too short suction duct 6 or air pressure duct 7. Alternatively, the automatic telescopic device can also directly use the existing automatic telescopic device of the suction duct 6 and the air pressure duct 7, which will not be described here. The alarm is arranged in the tunnel and used for alarming when the gas concentration is too high.

[0048] The air pressure fan 3, the dust removal fan 4 and the local air pressure fan 5 are all separately provided with the automatic walking device 9, and the air pressure fan 3, the dust removal fan 4 and the local air pressure fan 5 are driven to move back and forth by the automatic walking device 9. Specifically, the air pressure fan 3, the dust removal fan 4 and the local air pressure fan 5 are all mine explosion-proof fans with rated powers of 110 kW, 132 kW and 75 kW respectively. The automatic walking device 9 is a caterpillar type moving mechanism, the air pressure fan 3, the dust removal fan 4 and the local air pressure fan 5 are located above the belt conveyor 2, the racks of the belt conveyor 2 are extended to the outside of the belt on both sides, the automatic walking device 9 is a caterpillar type moving mechanism, and the moving caterpillars on both sides of the caterpillar type moving mechanism are located on the racks on both sides of the belt and walk on the racks.

[0049] The air pressure fan 3, the dust removal fan 4 and the local air pressure fan 5 are all separately provided with the frequency converter, the frequency signal input end of the frequency converter of the air pressure fan 3 is connected with the air pressure frequency signal output end of the industrial computer, the frequency signal input end of the frequency converter of the dust removal fan 4 is connected with the dust removal frequency signal output end of the industrial computer, and the frequency signal input end of the frequency converter of the local air pressure fan 5 is connected with the local air pressure frequency signal output end of the industrial computer.

[0050] The wireless communication module of the embodiment is a 5G communication module, which is used for wireless connection between the industrial computer and the remaining devices. Correspondingly, the remaining devices, such as the belt conveyor 2, the digging-anchor integrated machine 1, the air compressor 3, the dust removal fan 4, the local air compressor 5, the longitudinal full-section air curtain dust control device 8, each frequency converter and each sensor are provided with a wireless communication module correspondingly to realize wireless data transmission. The industrial computer can calculate the dust control parameters and output control instructions to each device. The intelligent centralized control system further includes a man-machine interface, which includes a display and an input device. The display can display real-time environmental data and device operating status. The input device is used to input initial parameters of each device to support manual adjustment of parameters and ensure controllability in extreme conditions.

[0051] In the embodiment, all sensors, including the roadway dust concentration sensor, the roadway gas concentration sensor, the digging-anchor dust concentration sensor, the digging-anchor gas concentration sensor and the transportation dust concentration sensor, are IP65 level sensors, and the installation height of the sensors is 1.5-1.8 m from the roadway floor to match the height of the breathing zone. After all the sensors are installed, they are connected to the industrial computer through the wireless transmission module, and the sensor data accuracy is calibrated using standard dust gas with a range of 50 mg / m³ and 200 mg / m³ and standard gas with a range of 0.5% CH4 and 1.0% CH4. The positioning accuracy of the automatic walking device 9 is calibrated through the pre-set reference points in the roadway to ensure the reliability of the equipment and the sensor data.

[0052] The working method of the "pressure-extraction-injection" intelligent collaborative dust control experiment platform for the digging-anchor surface is as follows:

[0053] S1: Determine the cutting speed according to the roadway and coal seam hardness, and estimate the dust production intensity;

[0054] First, measure the net width and net height of the roadway, determine the cutting speed of the digging-anchor integrated machine 1 according to the coal seam hardness, and estimate the dust production intensity. The cutting speed is 2.5-3 m / min for soft coal seams, 1.5-2.5 m / min for medium-hard coal seams, and 1-1.5 m / min for hard coal seams, and the corresponding dust production is 50-200 mg / s;

[0055] S2: Set the initial parameters of the air compressor 3, the dust removal fan 4, the local air compressor 5 and the longitudinal full-section air curtain dust control device 8, and generate an initial dust control scheme through the industrial computer;

[0056] Wherein, the pressure fan 3 of the embodiment is set to 30Hz, corresponding to a wind pressure of 800Pa and a wind volume of 200m³ / min, meeting the needs of medium dust-producing wind curtain, the dust-removing fan 4 is set to 35Hz, corresponding to a negative pressure of 1000Pa and a wind volume of 250m³ / min, ensuring the dust-containing airflow extraction efficiency, the local pressure fan 5 is set to 25Hz, with a wind volume of 150m³ / min, assisting in adjusting the local airflow, the wind curtain injection angle of the longitudinal full-section wind curtain dust control device 8 is initially set to 45°, ensuring full coverage of the roadway section and avoiding secondary flying of dust, and the distance between the fan and the head is set to 5m, so as to accurately cover the cutting dust-producing area;

[0057] S3: starting the drilling and anchoring integrated machine 1;

[0058] S4: each dust concentration sensor and gas concentration sensor sends a dust concentration detection signal and a gas concentration detection signal to the industrial computer in real time, the industrial computer sends the received detection data to the display, and displays the concentration change curve and the equipment operation state in real time through the display; at the same time, the industrial computer is used for dust removal control;

[0059] S5, S6, S7 and S8 are executed at the same time;

[0060] S5: if the dust concentration exceeds the safety threshold, dust control is performed; in the embodiment, the dust concentration safety threshold is 2mg / m³;

[0061] S5-1: increasing the frequency of the fan; the industrial computer sends a command to increase the frequency by 5Hz to the frequency converter of the pressure fan 3 and the dust-removing fan 4 at the same time;

[0062] S5-2: adjusting the wind curtain injection angle; the industrial computer sends an adjusting wind curtain injection angle command to the longitudinal full-section wind curtain dust control device 8 according to the dust-exceeding area; specifically, if the cutting area, i.e. the front side of the longitudinal full-section wind curtain dust control device 8, the dust concentration exceeds the safety threshold, the industrial computer drives the longitudinal full-section wind curtain dust control device 8 to adjust the wind curtain injection angle to 55°, and if the personnel area, i.e. the rear side of the longitudinal full-section wind curtain dust control device 8, the dust concentration exceeds the safety threshold, the industrial computer drives the longitudinal full-section wind curtain dust control device 8 to adjust the wind curtain injection angle to 35°;

[0063] S5-3: adjusting the wind curtain injection angle;

[0064] S5-4: adjusting the fan position; the industrial computer sends a command to the automatic walking device 9 to move closer to the drilling and anchoring integrated machine 1, and the automatic walking device 9 drives the pressure fan 3, the dust-removing fan 4, the local pressure fan 5 and the longitudinal full-section wind curtain dust control device 8 to move towards the drilling and anchoring integrated machine 1; the specific single moving distance is ±0.5m;

[0065] S5-5: Repeat steps S5-1~S5-4 until the dust concentration meets the standard, and at the same time, monitor the total current of the pressure fan 3, the dust removal fan 4, and the local pressure fan 5 through the industrial computer, and do not exceed the rated value 110% to prevent overload;

[0066] S6: If the gas concentration exceeds the early warning value, stop the experiment and alarm, and use emergency ventilation to guide the gas, and after the concentration is reduced to below the safety value, resume the experiment; the gas concentration early warning value of this embodiment is 0.8% CH4;

[0067] S6-1: Reduce the frequency of the fan and alarm; the industrial computer sends a command to reduce the frequency by 10 Hz to the frequency converter of the pressure fan 3 and the dust removal fan 4 at the same time; and S6-2 is performed at the same time;

[0068] S6-2: If the gas concentration exceeds the over-limit value, the industrial computer stops the combined excavating and anchoring machine 1, the belt conveyor 2, the pressure fan 3, the dust removal fan 4, the local pressure fan 5, and the longitudinal full-face air curtain dust control device 8, and suspends the simulation experiment, and starts the emergency ventilation system to guide and dilute the gas, and after the concentration is reduced to below 0.5% CH4, the industrial computer starts the combined excavating and anchoring machine 1, the belt conveyor 2, the pressure fan 3, the dust removal fan 4, the local pressure fan 5, and the longitudinal full-face air curtain dust control device 8, and resumes the simulation experiment; the gas concentration over-limit value of this embodiment is 1.0% CH4;

[0069] S7: Store data in real time;

[0070] S7-1: Run data storage; the industrial computer sends the real-time acquired working conditions of the combined excavating and anchoring machine 1, the working conditions of the belt conveyor 2, the air curtain injection angle of the longitudinal full-face air curtain dust control device 8, and the frequencies of the corresponding frequency converters of the pressure fan 3, the dust removal fan 4, and the local pressure fan 5 to the data storage unit for storage; and in this embodiment, the data storage unit is classified and managed according to the "minute-level backup, hour-level archiving" strategy (indexed by "date - shift - coal seam type"), and supports export to Excel format;

[0071] S7-2: Environmental data storage; the industrial computer stores the detection data of each dust concentration sensor and each gas concentration sensor to the data storage unit; and in this embodiment, the data storage unit is classified and managed according to the "minute-level backup, hour-level archiving" strategy (indexed by "date - shift - coal seam type"), and supports export to Excel format;

[0072] S8: Adjust the frequency and position of the pressure fan 3, the dust removal fan 4, and the local pressure fan 5 periodically according to the running data and the environmental data;

[0073] The industrial computer sends a call operation data and environment data instruction to the data storage unit at regular intervals, continuously adjusts the parameters through comparison and analysis of the operation data and the environment data (such as the effect of dust control parameters under different cutting speeds), for example, for the high-dust scene of hard coal seam, the single lifting range of the fan frequency is optimized to 8Hz to speed up the dust control response speed, and finally the long-term improvement of dust control efficiency and system stability is realized.

Claims

1. An intelligent collaborative dust control experimental platform for "pressure-extraction-spraying" at the excavation and anchoring face, characterized in that: The system includes a work simulation system, a dust removal simulation system, and an intelligent centralized control system. The intelligent centralized control system includes an industrial computer, which is used to drive and adjust the work simulation system and the dust removal simulation system. The work simulation system includes a tunneling and anchoring machine (1) and a belt conveyor (2) installed in the tunnel. The drive signal input terminal of the tunneling and anchoring machine (1) is connected to the tunneling and anchoring drive signal output terminal of the industrial computer. The position signal output terminal of the displacement sensor of the tunneling and anchoring machine (1) is connected to the position signal input terminal of the industrial computer. The drive signal input terminal of the belt conveyor (2) is connected to the transport drive signal output terminal of the industrial computer. Several sets of sensors are installed at intervals at the operator's work platform in the roadway and in the return air roadway. Each set of sensors includes a roadway dust concentration sensor and a roadway gas concentration sensor. The detection output terminals of the roadway dust concentration sensors are all connected to the roadway dust detection signal input terminal of the industrial control computer, and the detection output terminals of the roadway gas concentration sensors are all connected to the roadway gas detection signal input terminal of the industrial control computer. The dust removal simulation system includes a compressor (3), a dust removal fan (4), and a local compressor (5). The local compressor (5) is located in the middle of the roadway, and the outlet of the local compressor (5) is connected to a longitudinal full-section air curtain dust control device (8). The longitudinal full-section air curtain dust control device (8) divides the internal space of the roadway into two sections through the air curtain. The air curtain spray angle signal input terminal of the longitudinal full-section air curtain dust control device (8) is connected to the air curtain angle signal output terminal of the industrial control computer. The dust removal fan (4) has its outlet connected to the exhaust duct (7), and the other end of the exhaust duct (7) is located near the cutting head of the integrated excavator (1); the air compressor (3) has its outlet connected to the air compressor (6), and the other end of the air compressor (6) is located near the discharge port of the integrated excavator (1); the air compressor (3), the dust removal fan (4) and the local air compressor (5) are each equipped with an automatic walking device (9), and the automatic walking device (9) drives the air compressor (3), the dust removal fan (4) and the local air compressor (5) to move back and forth.

2. The intelligent collaborative dust control experimental platform for "pressure-extraction-spraying" at the excavation face as described in claim 1, characterized in that: The air compressor (3), dust removal fan (4), and local air compressor (5) are all equipped with frequency converters. The frequency conversion signal input terminal of the air compressor (3) frequency converter is connected to the air compressor frequency conversion signal output terminal of the industrial control computer. The frequency conversion signal input terminal of the dust removal fan (4) frequency converter is connected to the dust removal frequency conversion signal output terminal of the industrial control computer. The frequency conversion signal input terminal of the local air compressor (5) frequency converter is connected to the local air compressor frequency conversion signal output terminal of the industrial control computer.

3. The intelligent collaborative dust control experimental platform for the "pressure-extraction-spraying" method at the excavation and anchoring face as described in claim 2, characterized in that: The cutting head of the integrated tunneling and anchoring machine (1) is equipped with two tunneling and anchoring dust concentration sensors and one tunneling and anchoring gas concentration sensor. The detection output terminals of the tunneling and anchoring dust concentration sensors are all connected to the tunneling and anchoring dust detection signal input terminal of the industrial control computer, and the detection output terminals of the tunneling and anchoring gas concentration sensors are all connected to the tunneling and anchoring gas detection signal input terminal of the industrial control computer. Both ends of the frame of the belt conveyor (2) are equipped with transport dust concentration sensors, and the detection data output terminals of the transport dust concentration sensors are connected to the transport dust detection data input terminal of the industrial control computer.

4. The intelligent collaborative dust control and removal experimental platform for the "pressure-extraction-spraying" method at the excavation and anchoring face as described in claim 3, characterized in that: The industrial control computer is equipped with a wireless communication module, and wirelessly connects with each dust concentration sensor, each gas concentration sensor, each frequency converter, belt conveyor (2) and tunneling and anchoring machine (1) through the wireless communication module. The data storage signal output terminal of the industrial control computer is connected to the data storage signal input terminal of the data storage unit.

5. The intelligent collaborative dust control and removal experimental platform for the "pressure-extraction-spraying" method at the excavation and anchoring face as described in claim 4, characterized in that: The intelligent centralized control system also includes a human-machine interface, which includes a display and an input device. The display can show real-time environmental data and equipment operating status, and the input device is used to input the initial parameters of each device to support manual adjustment of parameters and ensure controllability in extreme situations.

6. The intelligent collaborative dust control and removal experimental platform for the "pressure-extraction-spraying" method at the excavation and anchoring face according to claim 4, characterized in that: Both the exhaust duct (7) and the air compressor duct (6) are made of mine flexible flame-retardant duct, and both ends of the exhaust duct (7) and the air compressor duct (6) are equipped with automatic telescopic devices.

7. The intelligent collaborative dust control experimental platform for "pressure-extraction-spraying" at the excavation face according to claim 4, characterized in that: All sensors are IP65 rated and are installed 1.5 to 1.8 meters above the tunnel floor.

8. An experimental method for intelligent collaborative dust control and removal at the excavation and anchoring face using a "pressure-extraction-spraying" system, characterized in that... The experimental platform for intelligent collaborative dust control and removal at the excavation face, comprising the "pressure-extraction-spraying" method as described in any one of claims 4 to 7, further includes the following steps: S1: Determine the cutting speed based on the hardness of the roadway and coal seam, and estimate the dust generation intensity; S2: Set the initial parameters of the air compressor (3), dust removal fan (4), local air compressor (5) and longitudinal full-section air curtain dust control device, and generate the initial dust control scheme through the industrial control computer; S3: Start the tunneling and anchoring machine (1); S4: Each dust concentration sensor and gas concentration sensor sends dust concentration detection signals and gas concentration detection signals to the industrial control computer in real time. The industrial control computer sends the received detection data to the display and displays the concentration change curve and equipment operating status in real time. At the same time, the industrial control computer drives the air compressor (3), dust removal fan (4), local air compressor (5) and longitudinal full-section air curtain dust control device (8) to remove dust according to the initial dust control scheme. Simultaneously execute S5, S6, S7, and S8; S5: If the dust concentration exceeds the safety threshold, dust control measures shall be implemented. S6: If the gas concentration exceeds the warning value, stop the experiment and sound the alarm. Use emergency ventilation to remove the gas. Resume the experiment once the concentration drops below the safe value. S7: Real-time data storage; S8: Regularly adjust the frequency and location of the air compressor (3), dust removal fan (4), and local air compressor (5) based on operating data and environmental data.

9. The experimental method for intelligent collaborative dust control and removal at the excavation and anchoring face using "pressure-extraction-spraying" as described in claim 8, characterized in that: Dust control in step S5 includes the following steps: S5-1: Increase the frequency of the blower; The industrial control computer simultaneously sends an instruction to increase the frequency of the frequency converters of the blower (3) and the dust removal blower (4); S5-2: Adjust the air curtain spray angle; the industrial control computer sends an instruction to the longitudinal full-section air curtain dust control device (8) to adjust the air curtain spray angle according to the dusty area; S5-3: Adjust the air curtain spray angle; S5-4: Adjust the position of the fan; The industrial control computer sends a command to the automatic walking device (9) to move closer to the tunneling and anchoring machine (1), and the automatic walking device (9) drives the air compressor (3), dust removal fan (4), local air compressor (5) and longitudinal full-section air curtain dust control device (8) to move towards the tunneling and anchoring machine (1); S5-5: Repeat steps S5-1 to S5-4 until the dust concentration meets the standard. At the same time, monitor the total current of the air compressor (3), dust removal fan (4), and local air compressor (5) through the industrial control computer to prevent overload.

10. The experimental method for intelligent collaborative dust control and removal at the tunneling face using "pressure-extraction-spraying" as described in claim 8, characterized in that: Step S6 involves stopping the experiment and triggering an alarm. Emergency ventilation and gas evacuation include the following steps: S6-1: Reduce the frequency of the blower and issue an alarm; The industrial control computer simultaneously sends a command to reduce the frequency of the inverters of the blower (3) and the dust collector (4); Simultaneously execute S6-2; S6-2: If the gas concentration exceeds the limit, the industrial control computer will stop the tunneling and anchoring machine (1) and the belt conveyor (2), suspend the operation, and start emergency ventilation to divert the gas. Once the concentration drops below the safe value, the industrial control computer will start the tunneling and anchoring machine (1) and the belt conveyor (2) to resume the operation. Step S7 also includes the following steps: S7-1: Running data storage; The industrial control computer will send the real-time acquired working conditions of the tunneling and anchoring machine (1), the working conditions of the belt conveyor (2), the air curtain spray angle of the longitudinal full-section air curtain dust control device (8), and the frequency of the inverters corresponding to the air compressor (3), dust removal fan (4), and local air compressor (5) to the data storage unit for storage; S7-2: Environmental data storage; The industrial control computer stores the real-time detection data from each dust concentration sensor and each gas concentration sensor in the data storage unit.

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