Coal mine coal dust explosion risk dynamic evaluation and explosion suppression system

Abstract

The invention discloses a coal mine coal dust explosion risk dynamic evaluation and explosion suppression system, which comprises a sensing module, a data processing module, a data processing module and a data processing module, wherein the sensing module is used for acquiring direct and indirect parameters of an underground environment; the central processing module is used for operating a risk assessment algorithm and generating a control instruction; the explosion suppression execution modules are distributed in pipelines and roadways of underground key nodes and are used for executing explosion suppression actions; the active chemical detection module is arranged in the main ventilation pipeline and is used for carrying out pre-chemical sampling and analysis on the inflowing air so as to judge the abnormal enrichment trend of the explosive gas; according to the system, a dynamic risk assessment system based on multi-source indirect perception and active chemical detection is constructed, and precise explosion suppression of time-space cooperation is realized. The method has the advantages of being capable of achieving early warning, dynamic evaluation and precise collaborative explosion suppression.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine safety production and disaster prevention and control, and specifically provides a dynamic assessment and explosion suppression system for the risk of coal dust explosion in coal mines. Background Art

[0002] Coal mine safety production has always been a top priority in China's industrial field. Among them, coal dust explosion is one of the most serious disasters underground due to its huge destructive power and chain reaction. At present, the widely deployed safety monitoring systems in coal mines mainly rely on static monitoring of direct environmental parameters such as methane concentration, dust concentration, and temperature. These systems usually use the method of setting fixed thresholds for alarm, and trigger alarms or perform basic linkage operations such as power cut when the monitored data exceeds the standard. This mode has played a certain role in long-term practice, but its essence is a passive response mechanism.

[0003] At present, the risk assessment dimensions of existing technical solutions are relatively single, only relying on limited direct parameters, and unable to effectively integrate indirect situation information such as the dynamic distribution of personnel and the change of regional temperature field, resulting in insufficient early perception and comprehensive judgment ability of potential risks; secondly, in terms of gas monitoring, traditional physical sensors are insensitive to the trace chemical changes and abnormal enrichment trends of explosive gases, and there is a lag in early warning; in addition, most of the existing explosion suppression devices are fixed in position, have a limited coverage range, and have poor linkage with ventilation, power supply and other systems, and it is difficult to achieve precise and coordinated explosion suppression actions according to the dynamic evolution of risks and the characteristics of roadway space.

[0004] Therefore, there is an urgent need for an integrated solution that can integrate multi-source information, achieve dynamic risk assessment and prediction, and can perform early precise warning and space-time coordinated explosion suppression, so as to break through the bottleneck of traditional passive defense and improve the active prevention and control ability of coal dust explosion disasters in coal mines. Summary of the Invention

[0005] The purpose of the present invention is to provide a dynamic assessment and explosion suppression system for the risk of coal dust explosion in coal mines, which has the advantages of being able to achieve early warning, dynamic assessment and precise coordinated explosion suppression, and solves the problems in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A dynamic assessment and explosion suppression system for the risk of coal dust explosion in coal mines, comprising: A sensing module for obtaining direct and indirect parameters of the underground environment; A central processing module for running a risk assessment algorithm and generating control instructions; An explosion suppression execution module distributed in pipelines and roadways at key underground nodes for performing explosion suppression actions; An active chemical detection module is installed in the main ventilation duct to perform pre-chemical sampling and analysis of the incoming air in order to determine the abnormal enrichment trend of explosive gases. The system constructs a dynamic risk assessment system based on multi-source indirect sensing and active chemical detection to achieve precise explosion suppression through spatiotemporal coordination.

[0007] Preferably, the sensing module includes: An environmental sensing unit is used to collect data on dust concentration, methane concentration, temperature, and air pressure. The indirect situational awareness unit includes an infrared thermal imager and a personnel counting camera; the infrared thermal imager is used to simultaneously monitor the ambient temperature field and the body surface temperature of the personnel; the personnel counting camera is used to dynamically count the number of personnel in the danger zone. The central processing module is configured to: when it detects an abnormal decrease in the number of people in a specific area, while the methane concentration in that area is showing an upward trend, use this trend as a weighting factor to increase the overall risk level of the system.

[0008] Preferably, the active chemical detection module includes: A gas sampling device used to draw in air from a pipe; The mixing reaction mechanism contains a specific reaction solution, which ensures that the sampled air is thoroughly mixed with the reaction solution; An optical analysis unit is used to detect changes in the color, turbidity, or specific spectral characteristics of a mixed solution. The central processing module is configured to quantify the "degree of anomaly" based on the output signal of the optical analysis unit, and to calculate and correct the explosion risk assessment results by fusing them with the direct parameters of the sensing module.

[0009] Preferably, the explosion suppression execution module includes: The pipeline explosion suppression device is fixed to key nodes of the mine ventilation pipeline by a detachable clamp or flange structure. It stores explosion suppressant inside and can receive instructions to start and form an explosion suppressant fog curtain within milliseconds. The tunnel explosion suppression device adopts a modular design and is fixed to the tunnel roof or sidewall through an adjustable universal mounting bracket. The spray angle and range are adjustable to adapt to different tunnel cross-sectional shapes and sizes.

[0010] Preferably, the risk assessment algorithm running in the central processing module adopts a multi-level information fusion architecture, which weights and fuses the direct parameters of the sensing module, the situational parameters of the indirect situational awareness unit, and the chemical anomaly parameters of the active chemical detection module, and introduces time series analysis to achieve dynamic prediction of risk trends.

[0011] Preferably, it also includes a linkage control module. The central processing module communicates and links with the mine ventilation system, production control system and personnel positioning system through the linkage control module according to the risk assessment results. When the risk level exceeds the threshold, it automatically performs one or more of the following operations: adjusting the air volume, cutting off the power supply to the dangerous area and forcibly evacuating personnel.

[0012] Preferably, the mixing reaction mechanism and optical analysis unit of the active chemical detection module are modularly packaged to form an independent, quick-pluggable detection box, which facilitates periodic replacement of the reaction solution and maintenance.

[0013] Preferably, all downhole equipment housings have explosion-proof, dust-proof, and moisture-proof structures, and sensor probes are equipped with self-cleaning or anti-clogging structures to ensure long-term reliable operation in harsh downhole environments.

[0014] Preferably, the spray angle and range of the explosion suppression device in the tunnel are dynamically adjusted by the mechanical adjustment mechanism or electric drive mechanism of the universal bracket to match the tunnel width, height and dust diffusion pattern.

[0015] This invention also provides a method for dynamic assessment and suppression of coal dust explosion hazards in coal mines, comprising a coal dust explosion hazard dynamic assessment and suppression system as described above, including the following steps: The sensing module collects direct environmental parameters (dust concentration, methane concentration, temperature, air pressure) and indirect parameters of personnel status (regional temperature field, number of people) from multiple sources. The active chemical detection module performs chemical sampling and analysis on the air in the ventilation duct to obtain abnormal gas chemical parameters; In the central processing module, direct parameters, indirect parameters, and chemical anomaly parameters are integrated, and the current and future risk levels are calculated through a dynamic risk assessment algorithm. Multi-level early warning information is generated based on risk levels, and other production safety systems are coordinated through the linkage control module. When an explosion risk is determined to be extremely high or signs of an explosion are detected, the explosion suppression execution module's pipeline explosion suppression device and / or tunnel explosion suppression device are immediately triggered to form a coordinated explosion suppression action.

[0016] Compared with the prior art, the present invention has the following advantages: 1. This invention uses the environmental sensing unit and indirect situational sensing unit in the sensing module to collect direct parameters such as dust concentration, methane concentration, temperature, and air pressure from multiple sources, as well as indirect situational parameters such as regional temperature field and number of personnel. Combined with the active chemical detection module, it performs chemical sampling and analysis of the air in the ventilation duct to obtain abnormal gas chemical parameters. It effectively integrates direct, indirect, and chemical multidimensional information, overcomes the shortcomings of the single dimension of risk assessment in the prior art, and realizes early, comprehensive perception and dynamic comprehensive assessment of coal dust explosion risk in coal mines. 2. The active chemical detection module draws in air through a gas sampling mechanism, mixes it with a specific reaction solution in a mixing reaction mechanism, and uses an optical analysis unit to detect changes in solution color, turbidity, or spectrum. It can sensitively identify trace chemical changes and abnormal enrichment trends of explosive gases, thereby correcting and optimizing risk assessment results in advance. This solves the problem of delayed early warning by traditional physical sensors and significantly improves the timeliness and accuracy of early warning. 3. The central processing module adopts a multi-level information fusion architecture and time series analysis, which weights and fuses multi-source parameters and dynamically predicts risk trends. At the same time, it communicates and links with the mine ventilation, production and personnel positioning systems through the linkage control module to realize operations such as automatic adjustment of air volume, power cut-off or forced evacuation, forming an active prevention and control system, which enhances the system's response capability to risk evolution and collaborative management efficiency. 4. The explosion suppression execution module includes a pipeline explosion suppression device and a roadway explosion suppression device. The pipeline explosion suppression device is fixed to the ventilation duct by clamps or flanges and can be activated within milliseconds to form an explosion suppressant fog curtain. The roadway explosion suppression device is fixed to the roadway roof or sidewall by an adjustable universal mounting bracket. Its spray angle and range are adjustable to adapt to different roadway cross sections, thereby achieving precise positioning and spatiotemporal coordinated coverage of explosion suppression operations. This overcomes the shortcomings of traditional explosion suppression devices, such as fixed position and poor linkage, and effectively improves the explosion suppression effect and safety. Attached Figure Description

[0017] Figure 1 This is a flowchart of the overall workflow of the system of the present invention; Figure 2 This is a schematic diagram of the layout of the downhole equipment of the present invention; Figure 3 This is a flowchart of the risk assessment algorithm of the present invention; Figure 4 This is a schematic diagram illustrating the working principle of the active chemical detection module of this invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] To address the shortcomings of existing technologies, such as delayed risk warnings, limited risk assessment dimensions, lack of forward-looking chemical monitoring, and poor coordination of explosion suppression systems, the following technical solution is proposed. Please refer to [link / reference needed]. Figures 1-4 .

[0020] A dynamic assessment and suppression system for coal dust explosion hazards in coal mines, comprising: The sensing module is used to acquire direct and indirect parameters of the downhole environment; The central processing module is used to run risk assessment algorithms and generate control commands; The explosion suppression execution module is distributed in pipelines and roadways at key underground nodes and is used to execute explosion suppression actions; An active chemical detection module is installed in the main ventilation duct to perform pre-chemical sampling and analysis of the incoming air in order to determine the abnormal enrichment trend of explosive gases. The system constructs a dynamic risk assessment system based on multi-source indirect sensing and active chemical detection to achieve precise explosion suppression through spatiotemporal coordination.

[0021] Preferably, the sensing module includes: An environmental sensing unit is used to collect data on dust concentration, methane concentration, temperature, and air pressure. The indirect situational awareness unit includes an infrared thermal imager and a personnel counting camera; the infrared thermal imager is used to simultaneously monitor the ambient temperature field and the body surface temperature of the personnel; the personnel counting camera is used to dynamically count the number of personnel in the danger zone. The central processing module is configured to use an abnormal decrease in the number of people in a specific area, while the methane concentration in that area is showing an upward trend, as a weighting factor to increase the overall risk level of the system.

[0022] Preferably, the active chemical detection module includes: A gas sampling device used to draw in air from a pipe; The mixing reaction mechanism contains a specific reaction solution, which ensures that the sampled air is thoroughly mixed with the reaction solution; An optical analysis unit is used to detect changes in the color, turbidity, or specific spectral characteristics of a mixed solution. The central processing module is configured to quantify the "degree of anomaly" based on the output signal of the optical analysis unit and to calculate and correct the explosion risk assessment results by fusing them with the direct parameters of the sensing module.

[0023] Preferably, the explosion suppression execution module includes: The pipeline explosion suppression device is fixed to key nodes of the mine ventilation pipeline by a detachable clamp or flange structure. It stores explosion suppressant inside and can receive instructions to start and form an explosion suppressant fog curtain within milliseconds. The tunnel explosion suppression device adopts a modular design and is fixed to the tunnel roof or sidewall through an adjustable universal mounting bracket. The spray angle and range are adjustable to adapt to different tunnel cross-sectional shapes and sizes.

[0024] Preferably, the risk assessment algorithm running in the central processing module adopts a multi-level information fusion architecture, which weights and fuses the direct parameters of the sensing module, the situational parameters of the indirect situational awareness unit, and the chemical anomaly parameters of the active chemical detection module, and introduces time series analysis to achieve dynamic prediction of risk trends.

[0025] Preferably, it also includes a linkage control module. The central processing module communicates and links with the mine ventilation system, production control system and personnel positioning system through the linkage control module based on the risk assessment results. When the risk level exceeds the threshold, it automatically performs one or more of the following operations: adjusting the air volume, cutting off the power supply to the dangerous area and forcibly evacuating personnel.

[0026] Preferably, the mixing reaction mechanism and optical analysis unit of the active chemical detection module are modularly packaged to form an independent, quick-pluggable detection box, which facilitates periodic replacement of the reaction solution and maintenance.

[0027] Preferably, all downhole equipment housings have explosion-proof, dust-proof, and moisture-proof structures, and sensor probes are equipped with self-cleaning or anti-clogging structures to ensure long-term reliable operation in harsh downhole environments.

[0028] Preferably, the spray angle and range of the explosion suppression device in the roadway are dynamically adjusted by the mechanical adjustment mechanism or electric drive mechanism of the universal bracket to match the roadway width, height and dust diffusion pattern.

[0029] This invention also provides a method for dynamic assessment and suppression of coal dust explosion hazards in coal mines, comprising the above-described system for dynamic assessment and suppression of coal dust explosion hazards, including the following steps: The sensing module collects direct environmental parameters (dust concentration, methane concentration, temperature, air pressure) and indirect parameters of personnel status (regional temperature field, number of people) from multiple sources. The active chemical detection module performs chemical sampling and analysis on the air in the ventilation duct to obtain abnormal gas chemical parameters; In the central processing module, direct parameters, indirect parameters, and chemical anomaly parameters are integrated, and the current and future risk levels are calculated through a dynamic risk assessment algorithm. Multi-level early warning information is generated based on risk levels, and other production safety systems are coordinated through the linkage control module. When an explosion risk is determined to be extremely high or signs of an explosion are detected, the explosion suppression execution module's pipeline explosion suppression device and / or tunnel explosion suppression device are immediately triggered to form a coordinated explosion suppression action.

[0030] Example 1: Risk Classification and Early Warning Driven by Multi-Source Information Fusion Scenario: Normal tunneling operation at the E-03 mining face in the mine. System deployment is shown in the attached figure. Figure 1 and attached Figure 2 As shown.

[0031] System Configuration: Sensing Module: Environmental sensing units (dust sensor, methane sensor, temperature and pressure sensor) are deployed on the return air side of the working face, while personnel counting cameras and infrared thermal imagers are deployed at the roadway entrance and key sections.

[0032] Active chemical detection module: installed 50m upstream of the main ventilation duct at the working face.

[0033] Central processing module: Equipped with multi-level information fusion algorithms and time series analysis models.

[0034] Linkage control module: Connects to the mine ventilation, production, and personnel positioning systems.

[0035] Explosion suppression execution module: The pipeline explosion suppression device is installed 100m away from the working face in the ventilation duct, and the roadway explosion suppression device is installed on the top plate at the entrance of the working face.

[0036] Operation process: Initial state: The environmental sensing unit monitors a dust concentration of 45 mg / m³, a methane concentration of 0.8%, and a personnel count of 12. The overall risk level of the system is "medium". The linkage control module only sends routine inspection information.

[0037] Abnormal evolution: At 15:00:00, the methane concentration rose to 1.0%, triggering an abnormal concentration warning.

[0038] At 15:02:30, the personnel counting camera captured a sudden decrease in the number of people from 12 to 3 within 2 minutes, and the infrared thermal imager detected a local temperature increase of 0.5℃.

[0039] Dynamic assessment and response: The central processing module uses "abnormal personnel evacuation", "rise in methane concentration" and "change in temperature field" as high-weight factors. After multi-level information fusion and time series analysis, it determines that the risk level has risen to "high".

[0040] The linkage control module executes: Issue audible and visual warnings (Level 3 alarm) to the work area and adjacent areas. An emergency evacuation order was sent to the location terminals of the three stranded individuals. Send a linkage signal to the production system to "restrict the start of high-power equipment".

[0041] This embodiment achieves early warning before the methane concentration reaches the traditional alarm threshold (1.5%) by integrating direct environmental parameters and indirect situational parameters, thus gaining at least 2 minutes of critical time for personnel evacuation and verifying the timeliness and accuracy of the multi-source information fusion model.

[0042] Example 2: Advanced Explosion Suppression Preparation Triggered by Active Chemical Detection Scenario: Continuing from the E-03 working face of the mine in Example 1, the system is in a "high-risk" state.

[0043] Operation process: Chemical anomaly detection: Active chemical detection module start-up cycle detection: The gas sampling mechanism draws in air from the pipeline, and after reacting with the characteristic solution in the mixing reaction mechanism (prepared for precursor gases such as CO and ethylene), the optical analysis unit detects spectral anomalies and outputs "chemical anomaly degree" 75 (full scale 100).

[0044] Risk level revision: The central processing module integrates the chemical anomaly parameters with the existing risk data, determines that the risk has a "pre-explosion enrichment trend", corrects the level to "extremely high", and sends a "pre-start" command to the explosion suppression execution module.

[0045] Explosion suppression devices are on standby: The explosion suppressant storage chamber of the pipeline explosion suppressant device completes a pressure self-check, and the fog spraying mechanism enters a millisecond-level response state; the universal bracket of the roadway explosion suppressant device is adjusted to a preset angle (to fit the trapezoidal cross-section of the E-03 working face), and the spraying range covers the entire cross-section of the roadway.

[0046] This embodiment demonstrates that the active chemical detection module can capture trace chemical changes that physical sensors cannot identify, enabling the system to enter a "combat-ready state" before physical signs of an explosion appear, thus solving the technical pain point of "reactive delay" in traditional explosion suppression systems.

[0047] Example 3: Multi-system collaborative explosion suppression under extreme risks Scenario: A short circuit in the E-03 working face caused initial combustion of local coal dust, triggering an "explosion sign" level response in the system.

[0048] Operation process: Explosion signs identification: The infrared thermal imager captured an instantaneous high-temperature fire source (temperature > 800℃), the environmental sensing unit detected a sharp fluctuation in temperature and pressure parameters, and the central processing module determined it to be an "explosion sign" within 5ms.

[0049] Collaborative Explosion Suppression Execution: Pipeline explosion suppression device: It forms a millisecond-level explosion suppression fog curtain in the ventilation duct, cutting off the propagation path of the flame along the duct.

[0050] Roadway explosion suppression device: sprays explosion suppressant onto the working face section to form a three-dimensional explosion suppression barrier.

[0051] Multi-system collaboration: Ventilation system: Increase the air volume at the working face to 1.2 times the design value to dilute the concentration of combustible gases.

[0052] Power supply system: Immediately cut off the power supply to the working face and upstream area.

[0053] Personnel positioning system: Forces evacuation instructions to be broadcast and locks safety exit gates to guide personnel to evacuate.

[0054] This embodiment fully presents a closed-loop prevention and control system of "assessment-early warning-explosion suppression-coordination". Through the spatiotemporal coordination of pipeline and tunnel explosion suppression devices, the spread of explosions is effectively contained; the multi-system linkage minimizes the risk of secondary disasters, demonstrating the reliability and integrity of the invention in extreme scenarios.

[0055] Example 4: Adaptive Risk Regulation under Complex Geological Conditions Scenario: The F-05 longwall face in the mine crosses a fault zone, and the risk of coal dust explosion fluctuates dynamically with geological changes.

[0056] Operation process: Adaptive sensing module: The environmental sensing unit automatically adjusts the sampling frequency (from the usual 1 time / minute to 5 times / minute), and the infrared thermal imager expands the monitoring range to cover the fault-affected area.

[0057] The active chemical detection module is adaptive: based on the "geological risk pre-judgment" of the central processing module, the detection cycle is shortened from 1 hour to 15 minutes.

[0058] Adaptive explosion suppression module: The universal bracket of the roadway explosion suppression device automatically adjusts the injection angle to adapt to the irregular cross-sectional shape of the roadway in the fault zone.

[0059] This embodiment verifies the system's adaptability to complex geological scenarios. By dynamically adjusting the module parameters, it ensures that efficient risk management can still be maintained when geological conditions change, further demonstrating the universality of the invention.

[0060] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0061] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A dynamic assessment and suppression system for coal dust explosion hazards in coal mines, characterized in that, include: The sensing module is used to acquire direct and indirect parameters of the downhole environment; The central processing module is used to run risk assessment algorithms and generate control commands; The explosion suppression execution module is distributed in pipelines and roadways at key underground nodes and is used to perform explosion suppression actions; An active chemical detection module is installed in the main ventilation duct to perform pre-chemical sampling and analysis of the incoming air in order to determine the abnormal enrichment trend of explosive gases. The system constructs a dynamic risk assessment system based on multi-source indirect sensing and active chemical detection to achieve precise explosion suppression through spatiotemporal coordination.

2. The system according to claim 1, characterized in that, The sensing module includes: An environmental sensing unit is used to collect data on dust concentration, methane concentration, temperature, and air pressure. The indirect situational awareness unit includes an infrared thermal imager and a personnel counting camera; the infrared thermal imager is used to simultaneously monitor the ambient temperature field and the body surface temperature of the personnel; the personnel counting camera is used to dynamically count the number of personnel in the danger zone. The central processing module is configured to: when it detects an abnormal decrease in the number of people in a specific area, while the methane concentration in that area is showing an upward trend, use this trend as a weighting factor to increase the overall risk level of the system.

3. The system according to claim 1, characterized in that, The active chemical detection module includes: A gas sampling device used to draw in air from a pipe; The mixing reaction mechanism contains a specific reaction solution, which allows the sampled air to be thoroughly mixed with the reaction solution; An optical analysis unit is used to detect changes in the color, turbidity, or specific spectral characteristics of a mixed solution. The central processing module is configured to quantify the "degree of anomaly" based on the output signal of the optical analysis unit, and to calculate and correct the explosion risk assessment results by fusing them with the direct parameters of the sensing module.

4. The system according to claim 1, characterized in that, The explosion suppression execution module includes: The pipeline explosion suppression device is fixed to key nodes of the mine ventilation pipeline by a detachable clamp or flange structure. It stores explosion suppressant inside and can receive instructions to start and form an explosion suppressant fog curtain within milliseconds. The tunnel explosion suppression device adopts a modular design and is fixed to the tunnel roof or sidewall through an adjustable universal mounting bracket. The spray angle and range are adjustable to adapt to different tunnel cross-sectional shapes and sizes.

5. The system according to claim 1, characterized in that, The risk assessment algorithm running in the central processing module adopts a multi-level information fusion architecture, which weights and fuses the direct parameters of the sensing module, the situational parameters of the indirect situational awareness unit, and the chemical anomaly parameters of the active chemical detection module, and introduces time series analysis to achieve dynamic prediction of risk trends.

6. The system according to claim 1, characterized in that, It also includes a linkage control module. The central processing module communicates and links with the mine ventilation system, production control system and personnel positioning system through the linkage control module based on the risk assessment results. When the risk level exceeds the threshold, it automatically performs one or more of the following operations: adjusting the air volume, cutting off the power supply to the dangerous area and forcibly evacuating personnel.

7. The system according to claim 3, characterized in that, The active chemical detection module's mixing reaction mechanism and optical analysis unit are modularly packaged to form an independent, quick-pluggable detection box, facilitating periodic replacement of the reaction solution and maintenance.

8. The system according to claim 1, characterized in that, All downhole equipment housings are explosion-proof, dustproof, and moisture-proof, and sensor probes are equipped with self-cleaning or anti-clogging structures to ensure long-term reliable operation in harsh downhole environments.

9. The system according to claim 4, characterized in that, The spray angle and range of the explosion suppression device in the tunnel are dynamically adjusted by the mechanical adjustment mechanism or electric drive mechanism of the universal bracket to match the tunnel width, height and dust diffusion pattern.

10. A method for dynamic assessment and suppression of coal dust explosion hazards in coal mines, comprising the system described in any one of claims 1-9, and including the following steps: The sensing module collects direct environmental parameters and indirect personnel status parameters from multiple sources. The active chemical detection module performs chemical sampling and analysis on the air in the ventilation duct to obtain abnormal gas chemical parameters; In the central processing module, direct parameters, indirect parameters, and chemical anomaly parameters are integrated, and the current and future risk levels are calculated through a dynamic risk assessment algorithm. Multi-level early warning information is generated based on risk levels, and other production safety systems are coordinated through the linkage control module. When an explosion risk is determined to be extremely high or signs of an explosion are detected, the explosion suppression execution module's pipeline explosion suppression device and / or tunnel explosion suppression device are immediately triggered to form a coordinated explosion suppression action.

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