Mine explosion-proof water shed

Abstract

The invention discloses a mine explosion-proof water shed, and relates to the technical field of mining safety, and the mine explosion-proof water shed is characterized in that a traditional passive explosion-proof mode is improved into a combination of passive explosion-proof and active explosion-proof modes, and related data of explosion are stored at the same time; the passive explosion suppression is that a traditional explosion suppression water bag is installed in a roadway, and the active explosion suppression is that shock wave detection devices are installed in multiple directions of the roadway to detect precursor waves and shock waves generated by explosion; when the front drive wave or the shock wave exceeds the corresponding set threshold value, the traditional explosion-proof water bag is broken, and meanwhile, the CAN bus technology is used for controlling the multiple active spraying water curtains arranged in the mine to be opened at the same time, so that the explosion-proof device with the combination of the explosion-proof water bag and the active spraying water curtains is formed; wherein the arrangement mode of the active spraying water curtain is determined by an explosive shock wave propagation and shock wave filtering and weakening technology. According to the invention, explosion spreading can be timely and effectively inhibited.

Description

Technical Field

[0001] The invention relates to the technical field of mining safety, and in particular to a mine explosion-proof water shed. Background Art

[0002] Mine safety risks increase with the increase of uncertainty in the external environment, adding many potential safety hazards and even leading to safety accidents such as explosions inside mines.

[0003] In the prior art, the commonly used passive explosion-proof technical equipment is divided into two categories: explosion-proof water tanks and passive explosion-proof water bags. The action time of water tanks or water bags is only 160ms. The specific heat capacity of water is 4.2x103J (kg·k). When it comes into contact with the flame, it can greatly reduce the flame temperature, so that the heat transfer between coal dust particles cannot continue. Water forms water vapor under the action of high-temperature flames, and water absorbs a large amount of heat during the evaporation process. At the same time, the water vapor formed can isolate heat radiation and inhibit the heating and oxidation reaction of coal dust. The existing hanging water bag rack is a frame used for hanging explosion-proof water bags in underground coal lanes. Its purpose is to provide a hanging water bag rack that can ensure that the upper mouth of the explosion-proof water bag is open and the edges around are in a horizontal state, so that the water bag capacity can reach the maximum water capacity. A certain number of explosion-proof water bag racks are installed in the rock lanes related to the coal lanes or the two lanes of the mining face where there is a risk of coal dust explosion. As a flameproof water shed, it can play a good explosion-proof role in the event of a coal dust explosion and reduce the severity of the explosion. However, existing technologies are unable to effectively and timely suppress the spread of the explosion. Summary of the invention

[0004] The embodiment of the present invention provides a mine explosion-proof water canopy, which can solve the problem in the prior art that the spread of explosion cannot be effectively and timely suppressed.

[0005] An embodiment of the present invention provides a mine explosion-proof water canopy, comprising: a plurality of passive explosion-proof water bags, arranged at the top of a tunnel, for rupturing and providing water when subjected to a precursor wave or shock wave generated by an explosion; a spray water curtain module, comprising a water tank and a plurality of spray assemblies, the plurality of spray assemblies being arranged at the top of the tunnel, for providing a plurality of water curtains with different pressures; a plurality of sensors, arranged at the entrance of the tunnel, for detecting a precursor wave or shock wave generated by an explosion, when it is detected that the intensity of the precursor wave or shock wave exceeds a corresponding set threshold, the plurality of spray assemblies are driven to open by the received sensor signal, so that the plurality of spray assemblies form a plurality of water curtains with different pressures.

[0006] Furthermore, the multiple spray assemblies are multiple active spray water curtains, and the distances between the multiple active spray water curtains are determined by the explosion shock wave propagation mode of the tunnel and the shock wave filtering and weakening technology.

[0007] Furthermore, the multiple active spray water curtains are arranged in multiple rows and are respectively arranged in the main explosion-proof area and the auxiliary explosion-proof area; in the main explosion-proof area, the spacing between each row is 1.2m to 3m, the spacing between two active spray water curtains in the same row is 0.1m to 1.2m, and the distance between each active spray water curtain and the tunnel wall is greater than or equal to 0.1m; in the auxiliary explosion-proof area, the spacing between each row is 1m to 2m.

[0008] Furthermore, the water tank is provided with a data storage module, and the data storage module is used to record water quality, temperature and pressure data inside the water tank.

[0009] Furthermore, the multiple sensors are piezoelectric shock wave pressure measurement systems.

[0010] Furthermore, the opening of the multiple spray assemblies is controlled by CAN bus technology.

[0011] The embodiment of the present invention provides a mine explosion-proof water canopy, which has the following beneficial effects compared with the prior art: The sensor is installed at the entrance of the tunnel. When the precursor wave or shock wave generated by the explosion is detected, the multiple spray components in the spray water curtain module are immediately opened to form multiple water curtains with different pressures. In addition, multiple passive explosion-proof water bags are ruptured by the impact of the precursor wave or shock wave, which jointly prevent the flame generated by the explosion from spreading, and can timely and effectively suppress the spread of the explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A technical roadmap for a mine explosion-proof water shed provided by an embodiment of the present invention; Figure 2 A schematic diagram of the effect of obstacles of a mine explosion-proof water shed on flame propagation provided by an embodiment of the present invention; Figure 3 N provided in the embodiment of the present invention 2 and CO 2 Comparison of experimental results on suppressing methane explosion; Figure 4 The effect of a fine water mist containing an additive in a mine explosion-proof water shed provided by an embodiment of the present invention on the propagation speed of a gas explosion flame; Figure 5 CAN bus design provided for an embodiment of the present invention; Figure 6 Conventional test system workflow and time relationship provided for an embodiment of the present invention; Figure 7 A working process and time relationship of a multi-storage and less-removal test system for a mine explosion-proof water shed provided by an embodiment of the present invention; Figure 8A design drawing of a mine explosion-proof water shed provided in an embodiment of the present invention, wherein (a) is a layout diagram of the installation position of the explosion-proof water shed sprinkler, (b) is a diagram of the installation position of the controller, (c) is a diagram of the overall layout of the explosion-proof water shed, and (d) is a diagram of the installation position of the water tank; Fig. 9 A microcontroller module for a mine explosion-proof water shed provided in an embodiment of the present invention; Fig.10 A flow chart of the use of a mine explosion-proof water shed provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0013] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0014] The embodiment of the present invention provides a mine explosion-proof water canopy, including: multiple passive explosion-proof water bags, arranged at the top of the tunnel, used to rupture and provide water when subjected to the precursor wave or shock wave generated by the explosion; a spray water curtain module, including a water tank and multiple spray assemblies, multiple spray assemblies are arranged at the top of the tunnel, used to provide multiple water curtains with different pressures; multiple sensors, arranged at the entrance of the tunnel, used to detect the precursor wave or shock wave generated by the explosion, when it is detected that the intensity of the precursor wave or shock wave exceeds the corresponding set threshold, the multiple spray assemblies are driven to open by the received sensor signal, so that the multiple spray assemblies form multiple water curtains with different pressures. Multiple sensors are piezoelectric shock wave pressure measurement systems. The opening of multiple spray assemblies is controlled by CAN bus technology.

[0015] The specific methods for designing mine explosion-proof water sheds are: Step 1: By studying the propagation mode of explosion shock waves and the filtering and weakening technology of shock waves, multiple active spray water curtains are arranged in the tunnel. The arrangement mode affects the propagation of explosion flames in the tunnel. A mine explosion-proof water shed consisting of multiple passive explosion-proof water bags and multiple active spray water curtains is designed in the tunnel. Sensors for detecting precursor waves and shock waves generated by explosions are set in multiple directions of the tunnel, and the precursor waves or shock waves detected by the sensors are converted into signals used by CAN bus technology. The mine explosion-proof water shed is supplied with water through a water tank with a data storage module.

[0016] Step 2: When it is detected that the precursor wave or shock wave exceeds the corresponding set threshold, the signal received by the CAN bus technology drives multiple active sprinkler water curtains in the mine explosion-proof water shed to open, so that the multiple active sprinkler water curtains form multiple water curtains with different pressures, and multiple passive explosion-proof water bags in the mine explosion-proof water shed are ruptured by the impact of the precursor wave or shock wave.

[0017] The project details are as follows: 1. Project overview

[0018] The data storage type underground active explosion-proof water canopy based on shock wave pressure detection technology can effectively solve gas and coal dust explosions, limit the flames near the explosion source, reduce the damage of the explosion wave to ventilation safety facilities, and control the explosion accident within a certain range. It is of great significance to control the spread of the explosion wave and the explosion product to avoid the expansion of the accident and reduce the loss of personnel and property. The data storage type underground active explosion-proof water canopy based on shock wave pressure detection technology detects the precursor wave and shock wave generated by the explosion through the front-end sensor system multi-sensor cooperation detection and compares and calculates with the existing data to achieve the detection of the precursor wave and shock wave generated by the explosion. The active explosion-proof water canopy starts to spray water and forms four complete water curtains with different pressures. The water tank in the side rock body realizes the water supply and replenishment of the explosion-proof water canopy, ensuring that the explosion-proof water canopy can continuously form a water curtain within five to ten seconds, thereby achieving a good explosion-proof effect.

[0019] The characteristics of this data storage water shed are: (1) Large capacity: SUS304 water tank, three-layer stainless steel precision molded design, maximizes performance. Strong, corrosion-resistant, easy to construct, and highly earthquake-resistant. (2) Explosion-proof and safe: It is installed on both sides of the tunnel in the direction of the mine boring machine, and an explosion-proof isolation door is installed on the side of the water tank close to the tunnel to ensure the safety of the water tank. (3) Automatic pressure measurement: The built-in water level automatic control detector measures, displays, and alarms industrial process parameters such as temperature, pressure, liquid level, flow, and weight in the water tank to ensure the water pressure of the water tank.

[0020] The data recording system mainly stores the daily sensor data sent back throughout the mine, and records the key operating data of the entire mine in three stages: before, during, and after the explosion, such as: methane content, air dust concentration, mine humidity, and gas concentration. Fig. 9 Shown is a schematic diagram of the structure.

[0021] Use multiple sensors to achieve multi-party coordination and interaction: Infrared temperature sensors are installed at the top of the mine tunnel every 30 meters. The wide field of view is conducive to real-time detection of the overall temperature structure of the mine tunnel. Pressure vibration sensors are installed on the walls of the mine tunnel and the bottom of the mine tunnel, staggered, one every 30 meters. Pressure valve sensors are installed on the top bracket of the mine tunnel in mid-air and on the wall of the mine tunnel, 2 every 30 meters. Pressure valve sensors are installed on the top bracket of the mine tunnel in mid-air and on the wall of the mine tunnel, 2 every 30 meters.

[0022] 2. Technical route.

[0023] like Figure 1 Shown is the technical route of the design.

[0024] The technical route is divided into three major parts.

[0025] 1. The perception system mainly develops electronic control and electronic sensors, and improves sensitivity by continuously updating the sensing and transmission speed.

[0026] 2. The main material of the water bag is mainly resin material, and through continuous experiments, a tough material that can break in time is developed.

[0027] 3. The arrangement method is designed by studying the explosion shock wave propagation and shock wave filtering and weakening technology.

[0028] The propagation law of explosion flame.

[0029] Underground gas explosions are affected by many factors, including accumulation volume, accumulation concentration, ignition source, ignition location, explosion source properties, environmental conditions, etc., which greatly increases the complexity of gas explosions. The presence of obstacles can affect the propagation characteristics of gas explosion flames to a certain extent, and obstacles of different shapes, numbers, spacings, blocking rates, and arrangements have slightly different effects on the propagation of gas explosion flames. Figure 2 The figure shows the explosion flame propagation images after passing through obstacles of different shapes and different blocking rates. The existence of obstacles can change the flame propagation structure. When the explosion flame propagates through obstacles of different shapes, its flame propagation structure will also change.

[0030] Multi-directional and multi-element perception: Traditional pressure detection technology can usually only detect in one direction and one position, while this product uses multi-directional and multi-element perception technology, which can detect different environmental data in different directions, improving the comprehensiveness and accuracy of detection.

[0031] Shock wave detection: This product also has a shock wave detection function, which can detect instantaneous shock wave pressure. It is highly sensitive to some sudden pressure changes and can detect and deal with problems in time.

[0032] Infrared temperature detection: Using infrared thermal imaging cameras for temperature detection has the advantage of being able to detect remotely, and because the rear camera has a wide field of view, it can take into account the temperature distribution of large areas in the mine tunnel, and can be used for daily monitoring. Figure 3 N is shown 2 and CO 2 Comparison of experimental results on suppressing methane explosion.

[0033] The core principles of explosion-proof water bag layout: 1. Shock wave attenuation and energy absorption. During the propagation process, the energy of the shock wave decays exponentially with the distance and medium resistance. The explosion-proof water bag forms a water mist barrier through the scattering of water, which absorbs the shock wave energy and reduces the overpressure peak. The layout needs to cover the shock wave propagation path to ensure that the water mist can effectively intercept the shock wave front.

[0034] 2. Tunnel structure and water bag coverage.

[0035] Straight sections are preferred: Water bag sheds should be set up in straight tunnel sections, and avoid being arranged in complex areas such as turns and slope changes to reduce the superposition effect of shock wave reflections.

[0036] Coverage length requirements: The length of the main explosion-proof shed area is ≥30m, and the length of the auxiliary explosion-proof shed area is ≥20m, to ensure that the shock wave is continuously weakened during propagation.

[0037] Key technical parameters and determination methods.

[0038] 1. Row spacing and density.

[0039] Row spacing: 1.2~3m (main explosion-proof shed), 1.0~2.0m (auxiliary explosion-proof shed), dynamically adjusted according to the tunnel width and shock wave intensity.

[0040] Water bag gap: The distance between water bags in the same row is 0.1~1.2m, and the distance from the tunnel wall is ≥0.1m to prevent insufficient water mist coverage.

[0041] 2. Installation height and angle.

[0042] Suspension height: The bottom of the water bag is ≤1m from the top plate and ≥1.8m from the bottom plate of the tunnel to ensure that the water mist diffusion range covers the entire section of the tunnel.

[0043] Hook angle: The angle between the hook and the horizontal must be ≥75° to ensure that the water bag is quickly unhooked and released when the shock wave is triggered (hook head length 20~25mm).

[0044] 3. Water consumption and covering intensity.

[0045] Water volume per unit area: main explosion-proof shed ≥400L / m², auxiliary explosion-proof shed ≥200L / m². The number of water bags and the number of rows are determined by water volume calculation.

[0046] Dynamic adjustment: The density or amount of water in the water bag can be increased in areas with high incidence of shock waves (such as near coal bunkers and mining area entrances).

[0047] 3. The first “2+3>5” pressure explosion multi-layer water curtain.

[0048] The first "2+3>5" design concept: The innovation of this design concept is to combine different elements to form a more powerful effect. By combining the pressure explosion type and multi-layer water curtain, a more efficient explosion-proof and fire-extinguishing effect is achieved, and safety and reliability are improved.

[0049] Two explosion-proof water bags and three high-pressure explosion-proof water curtains are used. If the explosion wave propagates underground in the coal mine and exceeds the rated threshold, the explosion-proof water shed will be released according to the principle of proximity to reduce the further propagation of the explosion wave. At the same time, the three water curtain designs will be opened in sequence to maximize the safety of the lives of underground coal mine workers and prevent the risk of mine collapse.

[0050] Pressure explosion design: Traditional water curtain systems usually use water flow to form a water curtain, while this product uses a pressure explosion design, which can quickly release pressure when an explosion occurs and form a powerful water curtain, effectively suppressing the spread of the explosion and reducing the losses caused by the explosion. Figure 4 The figure shows the effect of water mist containing additives on the flame propagation speed of gas explosion.

[0051] Multi-layer water curtain: Compared with the traditional single-layer water curtain, this product adopts a multi-layer water curtain design, which can form a denser and thicker water curtain, improve the barrier effect on the flame and heat of the shock wave, and effectively control the spread of the shock wave. Improve safety performance: Through the application of the "2+3>5" design concept, the safety performance of this product has been significantly improved, which can respond to explosion incidents more quickly and effectively, and ensure the safety of personnel and property.

[0052] 4. CAN bus technology enables rapid response underground.

[0053] The CAN bus transmits data via differential signals. The CAN transceiver converts the differential signal into a TTL level signal, or converts the TTL level signal into a differential signal. The CAN controller receives the TTL level signal and transmits it to the MCU.

[0054] The specific design is to connect a group of sensors to the MCU through the IO port, encode the sensor data into a 32-bit information code and send it to the information return bus. The switchboard calls each MCU in the tunnel in turn through another calling bus to scan all sensor groups in the entire tunnel. The 32-bit information code includes the sensor group number position, status code (return whether it is damaged after calling), temperature, pressure and gas concentration code. Figure 5Shown is the CAN bus design.

[0055] Photoelectric coupling improves the response speed of CAN. In traditional bus information systems, wires are used as the carrier of the bus. However, wires are difficult to wire and maintain, making them unsuitable for use in mines. Photoelectric coupling can replace electrical signal transmission with optical signal transmission, breaking through the physical limitations of wires. In addition, the optical model has an extremely high bandwidth and will not be affected by the magnetic field generated by high-voltage transmission lines, causing data errors.

[0056] The innovation of the product lies in the following parts: 1. Shock wave pressure measurement system.

[0057] The explosion-proof water canopy has a shock wave detection function, which is one of its key features in explosion protection. By sensitively detecting the instantaneous shock wave pressure, the product can respond at the moment of the explosion. This highly sensitive detection enables the explosion-proof water canopy to form effective emergency protection at the earliest stage, minimize the impact of the explosion, effectively reduce the damage to ventilation safety facilities, and buy precious time for accident response.

[0058] Shock wave pressure is an important indicator for evaluating explosion performance. The shock wave signal has a high pressure amplitude, rich frequency components, and the explosion field environment is complex, which brings difficulties to the shock wave pressure measurement. The commonly used shock wave pressure measurement method in shock wave pressure measurement is the electrical measurement method. Considering the complexity of the explosion field, a piezoelectric shock wave pressure measurement system is often selected. Due to the parasitic effects such as high heat and strong shock vibration in the explosion field, the shock wave pressure measurement system outputs a parasitic response. In order to suppress the parasitic effect, the sensor needs to be modified, which will inevitably cause changes in the working characteristics and transfer characteristics of the shock wave pressure measurement system. In addition, factors such as different cable lengths and multiple uses of sensors will also introduce measurement errors. Therefore, the shock wave pressure measurement system needs to be calibrated, and its calibration band should cover the effective bandwidth of the shock wave pressure signal 0~100kHz, which is called wide-band calibration in the present invention. However, the existing calibration devices cannot achieve this wide-band calibration. Through theoretical analysis, experimental research and verification, the present invention studies the wide-band calibration, dynamic modeling and compensation, and engineering measurement uncertainty assessment methods of the modified piezoelectric shock wave surface reflection pressure measurement system. Accurately measuring shock wave pressure can improve the accuracy of damage power assessment in the face of problems such as uncertainty, incomparability, and inability to trace the source, and has important engineering application significance for the research and development and manufacture of mine explosion-proof devices.

[0059] Principle of wide-band calibration: Using the principle of laser interferometry, the pressure is indirectly measured by measuring the tiny displacement of an object under the action of a shock wave. This method has high accuracy and can be used as a reference standard for wide-band calibration.

[0060] Calibration process: 1. Mount a reflector on the object to which the shock wave pressure acts.

[0061] 2. Emits a laser beam and splits it into two beams. One beam hits the reflector and then returns, and the other serves as a reference beam.

[0062] 3. The two beams of light interfere and produce interference fringes.

[0063] 4. Under the action of shock waves, the reflector is displaced and the interference fringes change. By measuring the changes in interference fringes, the displacement of the object is calculated, and then converted into pressure based on mechanical relationships, so as to calibrate the shock wave pressure measurement system.

[0064] 2. Shock wave pressure measurement system.

[0065] Data storage type: Traditional water storage explosion-proof water tanks usually only have simple water storage and explosion-proof functions, while this product has data storage function, which can record and store water quality, temperature, pressure and other data inside the water tank, making it convenient for users to view and analyze at any time.

[0066] Intelligent monitoring: Through data storage design, the product can be equipped with sensors and monitoring devices to monitor the status inside the water tank in real time. Once an abnormality is found, an alarm can be issued or the user can be notified in time, thus improving the safety and reliability of the water tank.

[0067] Remote control: Due to the data storage design, the product can also be connected to computers and other devices to achieve remote control and monitoring. Users can manage and control the water tank anytime and anywhere.

[0068] Improved safety: Through the design of data storage explosion-proof water tanks, the situation inside the water tank can be monitored and recorded more comprehensively, which improves the safety of the water tank and reduces potential safety risks.

[0069] 3. Data collection.

[0070] The safety and traceability of the data storage design. The explosion-proof water shed adopts a data storage design, which can not only record and store the water quality, temperature, pressure and other data inside the water tank, but also realize the comprehensive monitoring of the product operation status. This design improves the safety of the product, can help trace the status before the accident, provide important basis for the analysis of the cause of the accident, and help improve future design and operation.

[0071] like Figure 6 For the routine test system workflow and time relationship, Figure 7 To store more and retrieve less, test the system workflow and time relationship.

[0072] If the sensor detects that the pressure suddenly rises from 0.05MPa to 0.15MPa (exceeding the preset threshold of 0.1MPa), and the gas concentration rises from 0.5% to 1.2%, the system will mark this segment of data as valid (determined as a potential precursor to explosion) and store it in its entirety; pressure fluctuation data that is stable below 0.05MPa is deemed invalid and can be overwritten if there is insufficient subsequent storage space.

[0073] Figure 8 Schematic diagram of various perspectives of the design drawing.

[0074] The demand analysis is as follows: 6. Research significance.

[0075] The "underground active explosion-proof water shed with storage of explosion precursor wave data under CAN bus" developed by the company has the main functions of warning the coming of explosion, protecting the safety of coal miners working on the front line, reducing economic losses caused by gas explosions and real-time detection of the normal conditions of coal mines. Before a gas explosion occurs, the product will actively release pressurized multiple water curtains, which will isolate the explosion flames behind the water curtain in an instant. Compared with traditional single-layer water curtains, multiple water curtains have a thicker water layer, which makes the isolation effect stronger, thereby minimizing personnel and economic losses.

[0076] 2. Market demand.

[0077] Accidents may occur at any time in coal mining, and they happen in an instant. The human brain alone cannot react in time. However, the active explosion-proof water bag developed will store and analyze the collected data, take action based on artificially set data thresholds, make judgments in advance, and be able to block the spread of explosion flames in a very short time, which can greatly reduce the losses caused by coal mine explosions.

[0078] The test report is as follows: 1. Solution implementation

[0079] 1. Functional test results.

[0080] Functional tests mainly focus on the system's explosion precursor wave detection capability, data processing efficiency, and water barrier activation mechanism. In multiple tests, the system successfully identified various simulated explosion precursor wave signals and completed data analysis and processing within the scheduled time. The water barrier activation response time was within 160ms, meeting the design requirements. Tests show that the system can work stably under simulated signals of different intensities and frequencies, demonstrating good functionality and reliability.

[0081] 2. Performance test results.

[0082] The performance test focused on the real-time performance and stability of the system. In the performance stress test that ran continuously for 24 hours, the system's data processing delay remained at the millisecond level, with no obvious performance degradation. The CAN bus communication performed well, and even with the increase in network load, the packet loss rate of data transmission was still less than 1.8%, far better than the industry average. In addition, the system's stability under high temperature, high humidity and other harsh conditions was also verified, proving its reliability design suitable for mine environments.

[0083] The collected test data was analyzed in detail, and the results showed that the overall performance of the system met the expected goals. The detection accuracy of the explosion precursor wave reached 80%, and it maintained a high consistency under various environmental variables. The standard deviation of the processing time of the digital processing unit and the activation time of the water shed was small, indicating that the system has good repeatability and predictability. Through the analysis of the CAN bus communication mode, the data transmission strategy was further optimized to reduce potential delays and conflicts. Overall, the test results show that the system design is reasonable and can meet the key needs of mine safety.

[0084] 2. Feasibility report

[0085] After a series of rigorous tests, the present invention has achieved the established goals in multiple key indicators. The system's explosion precursor wave detection capability, data reporting processing speed, and water shed activation response time all meet the design requirements. Although some problems were found during the test, they did not have a substantial impact on the system's centering function. Overall, the successful implementation of the top purpose has significantly improved the ability of underground safety protection and provided a more solid guarantee for the life safety of miners.

[0086] Based on the test results and problem analysis, it is recommended to make improvements in the following aspects in future work: first, strengthen the signal processing capability of the sensor to improve its accuracy in complex environments; second, optimize the data processing algorithm to reduce processing delays and ensure rapid response in emergency situations; finally, upgrade the physical layer facilities and communication protocols of the CAN bus to enhance its stability and reliability under harsh conditions. These improvements will further enhance the overall performance of the system and its ability to respond to emergencies.

[0087] A specific embodiment is as follows: This embodiment discloses a mine explosion-proof water canopy, comprising: a mine explosion-proof water canopy consisting of a plurality of passive explosion-proof water bags and a plurality of active spray water curtains. In addition, shock wave detection devices are installed in multiple directions of the tunnel entrance to detect precursor waves and shock waves generated by the explosion.

[0088] The specific method of using the mine explosion-proof water shed is as follows: When the precursor wave or shock wave exceeds the corresponding set threshold, the CAN bus technology is used to control the simultaneous opening of multiple active spray water curtains set in the mine, so that the multiple active spray water curtains produce multiple water curtains with different pressures. In addition, the traditional explosion-proof water bag is ruptured due to the precursor wave or shock wave, and water is passively sprayed out, forming an explosion-proof device composed of an explosion-proof water bag and an active spray water curtain, such as Fig.10 shown.

[0089] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A mine explosion-proof water shed, characterized in that: include: Multiple passive explosion-proof water bags are installed at the top of the tunnel to rupture and provide water when they are subjected to precursor waves or shock waves generated by the explosion; A spray water curtain module, comprising a water tank and a plurality of spray components, wherein the plurality of spray components are arranged at the top of the tunnel and are used to provide a plurality of water curtains with different pressures; Multiple sensors are installed at the tunnel entrance to detect the precursor wave or shock wave generated by the explosion. When the intensity of the precursor wave or shock wave is detected to exceed the corresponding set threshold, the received sensor signal drives multiple spray assemblies to open, so that the multiple spray assemblies form multiple water curtains with different pressures.

2. A mine explosion-proof water shed as claimed in claim 1, characterized in that: The multiple spray assemblies are multiple active spray water curtains, and the distances between the multiple active spray water curtains are determined by the explosion shock wave propagation mode of the tunnel and the shock wave filtering and weakening technology.

3. A mine explosion-proof water shed as claimed in claim 2, characterized in that: The multiple active spray water curtains are arranged in multiple rows and are respectively arranged in the main explosion-proof area and the auxiliary explosion-proof area; in the main explosion-proof area, the spacing between each row is 1.2m to 3m, the spacing between two active spray water curtains in the same row is 0.1m to 1.2m, and the distance between each active spray water curtain and the tunnel wall is greater than or equal to 0.1m; in the auxiliary explosion-proof area, the spacing between each row is 1m to 2m.

4. The mine explosion-proof water shed according to claim 1, characterized in that: The water tank is provided with a data storage module, and the data storage module is used to record the water quality, temperature and pressure data inside the water tank.

5. The mine explosion-proof water shed according to claim 1, characterized in that: The multiple sensors are piezoelectric shock wave pressure measurement systems.

6. The mine explosion-proof water shed according to claim 1, characterized in that: The opening of the multiple spray components is controlled by CAN bus technology.

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