Original Title: Coal Mine Underground Safety Avoidance "Six Systems" Must Know 80 Knowledge Points According to the Coal Mine Safety Regulations (2016 edition) and the acceptance specifications of the "six systems" for underground coal mine safety and risk avoidance, 60 knowledge points of the "six systems" for underground coal mine safety and risk avoidance are sorted out and summarized, which can be used for reference in the technical management process of the underground safety "six system". One. Integrated 1. Coal mine underground safety refuge "Six systems" refer to monitoring and control system, personnel positioning system, emergency refuge system, compressed air self-rescue system, water supply rescue system and communication system. All underground coal mines must build and improve the "six systems" according to the regulations to meet the requirements of "reliable system, perfect facilities, in-place management and effective operation". 2. Coal mining enterprises are perfect in construction. The main body of responsibility for the "six systems" and the principal person in charge of coal mining enterprises are the first person responsible for the construction and improvement of the "six systems". 3. Coal Mining Enterprises Should Implement Construction and Perfection The responsible persons and specific departments in charge of the "six systems" should clarify their responsibilities, improve the working system and organize the construction and improvement of the "six systems". 4. Prepare the mining area design . During the mining operation procedures, the safety monitoring, personnel position monitoring, the type, quantity and position of wired dispatching communication equipment, the laying of signal, communication and power supply cables, and the power-off area of the safety monitoring system must be clearly specified. The safety monitoring layout and power-off control diagram, personnel position monitoring system diagram and underground communication system diagram must be drawn and updated in time. 5. Every Data such as safety monitoring and personnel location monitoring shall be backed up within 3 months, and the backup data media shall be kept for no less than 2 years. The storage time of drawings and technical data shall not be less than 2 years. The sound recording shall be kept for more than 3 months. 6. Mine wired dispatching communication cable must be dedicated 。 The safety monitoring system and the image monitoring system are not allowed to share the same core optical fiber. The main cables of the mine safety monitoring system should be divided into two lines, which enter the mine from different shafts or from different positions with a certain distance between the shafts. Two. Monitor the monitoring system 7. Coal mining enterprises must comply with According to the requirements of the Code for the Use and Management of Coal Mine Safety Monitoring System and Detection Instruments (AQ1029-2007), the monitoring and control system is constructed and improved to realize the dynamic monitoring of the concentration, temperature and wind speed of methane and carbon monoxide in coal mines. 8. The monitoring and control system installed in the coal mine must comply with General Technical Requirements for Coal Mine Safety Monitoring System (AQ6201-2006), and obtain the safety mark of coal mine products. The supporting equipment of the monitoring and control system shall be consistent with the products listed in the safety sign certificate. 9. Methane The installation quantity, location and position of sensors such as feed, equipment start and stop, wind pressure, wind speed, carbon monoxide, smoke, temperature, air door and air duct must meet the requirements of Code for Use and Management of Coal Mine Safety Monitoring System and Detection Instruments (AQ1029-2007). The ground central station of the monitoring and control system shall be equipped with two sets of hosts, one for use and one for standby, to ensure 24-hour uninterrupted operation of the system. 10. Coal mining enterprises should adjust the sensors regularly according to the regulations. Ensure the accuracy and reliability of monitoring data. 11. The monitoring system shall be able to cut off the power supply of the controlled equipment quickly and automatically after the gas exceeds the limit. , and remain locked. 12. Executed by ground center station of monitoring and control system In the 24-hour duty system, the personnel on duty shall be in the mine dispatching room or the ground central station to ensure timely emergency disposal. 13. The monitoring and control system shall be able to monitor the environmental parameters such as methane and carbon monoxide concentration inside and outside the emergency refuge facilities in real time. 。 Expand the full text 14. The power supply of the safety monitoring equipment must be taken from the power side of the controlled switch or the special power supply. It is strictly prohibited to connect to the load side of the controlled switch. When installing the power-off control system, power-off conditions must be provided according to the power-off range, and the underground power supply and control line must be connected. When electrical equipment, power lines and control lines associated with safety monitoring equipment are reconnected or removed, they must be handled jointly with the safety monitoring management department. To overhaul the electrical equipment associated with the safety monitoring equipment, when the monitoring equipment needs to stop running, safety measures must be formulated and submitted to the chief engineer of the mine for approval. 15. Safety monitoring equipment must be adjusted regularly. Test at least once a month. Methane sensors using carrier catalytic elements must be calibrated at the equipment location using calibration gas samples and air gas samples, and portable methane detection alarms shall be calibrated in the instrument maintenance room at least once every 15 days. The functions of methane electric blocking and wind power blocking shall be tested at least once every 15 days. If it may cause power failure of local ventilator, it shall be tested once every six months. When the safety monitoring equipment fails, it must be handled in time. During the failure handling, safety measures such as manual monitoring must be taken, and the failure record must be filled in. 16. Safety monitoring equipment and cables must be checked daily for normality ? Compare the portable optical methane detector or portable methane detection alarm with the methane sensor, and report the record and inspection results to the mine attendant; when the difference between the two readings is greater than the allowable error, take safety measures and complete the calibration of the two devices within 8 hours based on the larger reading. 17. The personnel on duty in the mine dispatching room shall monitor and control the information. Fill in the operation log, print the daily report of safety monitoring,dth rock bit, and report it to the chief engineer and director of the mine for review. When the system sends out alarm, power failure, abnormal feed and other information, measures shall be taken to deal with them in time and report to the on-duty mine leader immediately; the handling process and results shall be recorded for the record. 18. The safety monitoring system must have the function of uploading monitoring data in real time. 。 19. Methane sensors must be installed at the following underground locations ： (1) Coal mining face and its return airway and corner, the middle of return airway when the length of return airway of coal mining face in high gas and outburst mine is more than 1000m. (2) In the coal roadway, semi-coal rock roadway and rock roadway with gas emission and its return air flow, when the length of the roadway in high gas and outburst mines is more than 11000 m, the middle part of the roadway is excavated. (3) Air intake roadway of coal mining face in outburst mine. (4) When series ventilation is adopted, the air intake roadway of the coal mining face and the front of the local ventilator of the heading face are connected. (5) Air return roadway in mining area, air return roadway on one wing and main air return roadway. (6) The coal loading point in the main haulage roadway where the electric locomotive is used. (7) Enclosed belt conveyor floor corridor above the bunker. (8) In the ground gas extraction pump room. (9) Outside the fence on the leeward side of the underground temporary gas extraction pumping station. (10) In the input and output pipelines of the gas extraction pump. 20. The sensors installed at the following locations in outburst mines must be full range or high and low concentration methane sensors. ： (1) Air intake and return roadway of coal mining face. (2) Coal roadway, semi-coal rock roadway and rock roadway with gas emission are in the return air flow of the heading face. (3) Air return roadway in mining area. (4) Main return airway. 21. The following downhole equipment must be equipped with a methane cut-off instrument or a portable methane detection alarm ： (1) Shearer, roadheader, integrated machine for driving and anchoring, and continuous miner. (II) Shuttle car and anchor drilling rig. (3) Transportation equipment powered by explosion-proof batteries or explosion-proof diesel engines. (Four) other mobile equipment that needs to be installed. 22. Air intake roadway of coal mining face in outburst seam . Wind direction sensor must be set at the air inlet of the heading face. When the air flow is reversed, an audible and visual alarm signal is sent out. Wind speed sensors must be installed in the return air flow of the return air roadway and the driving roadway of the coal mining face in the outburst seam. When the wind speed is lower than or exceeds the value specified in this regulation, an audible and visual alarm signal shall be given. 23. Every mining area The anemometer station of the first wing return airway and the main return airway shall be equipped with a wind speed sensor, and the air tunnel of the main ventilator shall be equipped with a pressure sensor; the suction pipeline of the extraction pump of the gas extraction pump station shall be provided with a flow sensor, a temperature sensor and a pressure sensor,dhd drill bit, and when using gas, the output pipeline shall also be provided with a flow sensor, a temperature sensor and a pressure sensor. Carbon monoxide sensors and temperature sensors shall be installed in mines using explosion-proof diesel power devices and mines mining coal seams prone to spontaneous combustion and spontaneous combustion. Main ventilators and local ventilators shall be equipped with equipment start and stop sensors. The main air door shall be equipped with an air door switch sensor. When two air doors are opened at the same time, an audible and visual alarm signal will be sent out. The load side of the controlled switch of methane electric locking and wind power locking must be provided with a feeding state sensor. Three. Personnel positioning system 24. Coal mining enterprises must comply with According to the requirements of the Specification for the Use and Management of the Management System for Underground Coal Mine Operators (AQ1048-2007), the underground personnel positioning system should be constructed and improved. Priority should be given to products with advanced technology, stable performance and high positioning accuracy, and system maintenance and upgrading should be done well to ensure the safe and reliable operation of the system. 25. When installing the underground personnel positioning system ? Underground sub-stations and base stations shall be set up as required to ensure that the dynamic distribution of underground personnel and the number of personnel at the mining face are accurately known. The mine personnel positioning system must meet the requirements of the General Technical Conditions for the Management System of Underground Coal Mine Operators (AQ6210-2007), and obtain the safety mark of coal mine products. The positioning substation, base station and other related equipment shall comply with the corresponding standards. 26. All personnel entering the well must carry identification cards. (Or a wireless communication device with positioning function). 27. All personnel of the mine enter and exit the wellhead Substations shall be set up at the entrances and exits of key areas and restricted areas to meet the requirements of monitoring the entry and exit of card-carrying personnel into and out of wells, key areas and restricted areas; substations shall be set up at the branches of roadways to meet the requirements of monitoring the entry and exit directions of card-carrying personnel. 28. Personnel positioning system sub-stations shall be set up at the entrance and exit of coal mine emergency refuge facilities respectively. ? Real-time monitoring of personnel entering and leaving emergency refuge facilities. 29. The ground central station of personnel positioning system shall be set in the mine dispatching room ? Display equipment shall be provided and 24-hour duty system shall be implemented. 30. Downhole personnel must carry identification card 。 Card reading sub-stations shall be set up at wellheads, entrances and exits of key areas and restricted areas for all personnel. 31. The personnel location monitoring system shall have the function of detecting whether the identification card is normal and unique. 。 32. The person on duty in the dispatching room of the mine shall monitor the information such as the location of the personnel. ? Fill in the operation log. Four. Emergency refuge system 33. Coal mining enterprises must comply with The Interim Provisions on the Construction and Management of Underground Emergency Refuge System in Coal Mines (AJZMZ [2011] No.15) establishes and improves the emergency refuge system. 34. Emergency refuge system shall be monitored and controlled. Personnel positioning, compressed air self-rescue, water supply rescue, communication and other systems are interconnected. On the basis of the safety protection function of the emergency refuge system, the safety protection capability of the emergency refuge system is improved by relying on the support of other refuge systems. 35. Emergency refuge facilities shall be provided with safety protection Oxygen supply guarantee, harmful gas removal, environmental monitoring, communication, lighting, power supply, personnel survival guarantee and other basic functions. The rated protection time is not less than 96 hours without any external support. 36. The capacity of emergency refuge facilities shall meet the emergency refuge needs of all personnel in the service area. , including production personnel, management personnel and other temporary personnel that may occur, and a certain reserve coefficient shall be reserved according to the regulations. 37. The setting of emergency refuge facilities should be combined with the route of mine disaster avoidance. ? Emergency refuge facilities shall be provided with clear and eye-catching signs. 38. The emergency refuge system should be adjusted and supplemented in time with the change of underground mining system. Including emergency refuge facilities, supporting systems, refuge routes and contingency plan. 39. The supporting equipment of emergency refuge facilities shall comply with the provisions of relevant standards. ? Those included in the management of safety marks shall obtain the safety marks for the products used in coal mines. The movable rescue capsule shall comply with relevant regulations and obtain the safety mark of coal mine products. Five. Compressed air self-rescue system 40. Coal mining enterprises are in accordance with "Coal Mine Safety Regulations" requires that on the basis of the establishment of compressed air system, it must meet the requirements of providing compressed air supply to all mining sites during the disaster period, and further build and improve the compressed air self-rescue system. 41. The air compressor shall be located on the ground. 。 For deep multi-level mines, when the air compressor is installed on the ground and it is difficult to ensure effective air supply to the underground operation point, it can be installed at a safe and reliable position at the bottom of the air intake shaft two levels above the air supply level, and obtain the safety mark of coal mine products, but it is not allowed to select the sliding vane air compressor. 42. The pipeline specification of the compressed air self-rescue system shall be in accordance with the air demand of the mine. Air supply distance, resistance loss and other parameters are calculated and determined, down the hole bit ,DHD Drill bit, but the diameter of the main pipeline is not less than 100 mm, and the diameter of the mining face pipeline is not less than 50 mm. 43. Compressed air pipelines shall be laid on the route for avoiding disasters in all mining areas of the mine. Air supply valves shall be set at intervals of no more than 200m. Conditional mines can be equipped with compressed air self-rescue devices. For mines with complex and extremely complex hydrogeological conditions, compressed air pipelines shall be laid at each level, mining area and the highest part of the rise roadway, and air supply valves shall be set. 44. Coal and gas outburst mines should be located at the distance from the working face. At least one set of compressed air self-rescue device shall be set in the roadway of 25 ~ 40m, the blasting site, the location of evacuees and guards, and the place where there are people working in the return airway. In the long-distance excavation roadway, the number of compressed air self-rescue devices shall be increased according to the actual situation. Each set of compressed air self-rescue device shall be able to be used by 5 ~ 8 persons, and the average air supply per person shall not be less than 0.1m3/min. The heading face of other mines shall be provided with compressed air pipelines and air supply valves. 45. The main air supply pipeline shall be equipped with water collecting and draining device 。 A switch and a steam-water separator shall be installed at the connection between the air supply pipeline and the self-rescue device. The valves of the compressed air self-rescue system shall be installed completely, and the valve wrenches shall be in the same direction to ensure the normal use of the system. 46. Compressed air self-rescue device shall conform to Technical Conditions for Mine Compressed Air Self-rescue Device (MT390-1995), and obtain the safety mark of coal mine products. 47. The compressed air self-rescue device shall be provided with pressure relief. Throttling, noise elimination, filtration, switch and other functions. The connection of parts and components shall be firm and reliable, and there shall be no windless, air leakage or self-rescue bag damage with a length of more than 5 mm. 48. Operation of compressed air self-rescue device shall be simple. Fast and reliable. When using the compressed air self-rescue device, the personnel should feel comfortable, without tingling and pressure. The air supply pressure of the compressed air pipeline applicable to the compressed air self-rescue system is 0.3 ~ 0.7 MPa; when the pressure is 0.3 MPa, the air supply volume of the compressed air self-rescue device shall be within the range of 100 ~ 150 L/min. The noise of the compressed air self-rescue device shall be less than 85 decibels. 49. The compressed air self-rescue device is arranged on a compressed air pipeline in a roadway of a mining face. It shall be set at the sidewalk side with spacious space, good support, complete ditch cover and no debris pile. The width of the sidewalk shall be kept at more than 0.5 m, and the laying height of the pipeline shall be convenient for the field personnel to save themselves. 50. Compressed air pipeline shall be connected to refuge chamber and escape capsule. Air supply valves shall be provided. Pressure reducing, silencing and filtering devices and control valves shall be provided for the connected mine compressed air pipeline. The compressed air outlet pressure shall be between 0.1 and 0.3 MPa, the air supply volume shall not be less than 0.3 m3/min · person, and the continuous noise shall not be greater than 70 decibels. 51. Underground compressed air pipeline shall be laid firmly and straightly ? Take protective measures to prevent catastrophic damage. Protective measures shall be taken for the pipeline 20 meters in front of the refuge chamber and rescue capsule (such as burying pipes in the bottom plate or using high-pressure hoses). 52. Compressed air pipeline shall be set on the route for avoiding disasters in the mining area. ? The interval of air supply valves set on the compressed air pipeline shall not be greater than 200 m. In mines with complex and extremely complex hydrogeological conditions, compressed air pipelines shall be laid at all levels, mining areas and the highest part of the rise roadway, and air supply valves shall be installed. Six. Water supply and rescue system 53. Coal mining enterprises must combine their own needs for safety and risk avoidance. ? Build and improve the water supply and rescue system. 54. Water supply source shall be from fire pool or special pool. 。 If there is an underground water source, the underground water source shall form a system with the ground water supply network. Anti-freezing and protective measures shall be taken for the ground pool. 55. Water supply pipeline shall be laid on the route for avoiding disasters in all mining areas of the mine. ? Water supply valves shall be installed at the compressed air self-rescue device and near the compressed air supply valve. 56. The mine water supply pipeline shall be connected to the emergency refuge facilities. The water supply valve shall be set, and the water volume and pressure shall meet the needs of the rated number of personnel for refuge. Protective measures shall be taken for the 20m water supply pipeline connected to the refuge chamber and the rescue capsule. 57. The water supply rescue system shall be able to supply water to the refuge personnel in case of emergency. . Provide conditions for delivering nutrient solution. Seven. Communication system 58. Coal mines must meet the requirements of safety and risk avoidance. ? Further build and improve the communication and liaison system. 59. Wired dispatching telephone system should be installed in coal mines 。 The underground telephone shall be of intrinsically safe type. Emergency broadcasting system and wireless communication system should be installed, and the installed wireless communication system should be interconnected with the dispatching telephone. 60. In the winch room of the main and auxiliary shafts of the mine Telephone shall be installed in the main mechanical and electrical equipment chambers such as shaft bottom yard, transportation dispatching room, mining area substation, water pump room, etc., as well as in the mining face, mining area and the highest horizontal point. 61. In the emergency refuge facility The main underground water pump house, the underground central substation, the mining face of the outburst coal seam, and the place where the evacuees are concentrated during blasting must be equipped with a telephone directly connected to the mine dispatching room. 62. The Coal Mine Safety Regulations require that the following locations must be equipped with wired dispatching telephones directly connected to the mine dispatching room: mine ground substation, ground main ventilator room, main and auxiliary shaft hoist room, air compressor room, underground main water pump room, underground central substation, shaft bottom yard, transportation dispatching room, mining area substation, upper and lower mountain winch room, water pump room, Main electromechanical equipment chambers such as the centralized control chamber of the belt conveyor, the coal mining face, the tunneling face, the vicinity of the mining face of the outburst coal seam, the place where evacuees are concentrated during blasting, the detonation point of underground blasting in the outburst mine, the mining area and the highest horizontal point, the refuge chamber, the gas drainage pump room, and the explosive warehouse. 63. Wired dispatch communication system should have selective calling Urgent call, full call, forced insertion, forced demolition, monitoring, recording and other functions. The dispatching telephone of the wired dispatching communication system must be directly connected to the dispatching switchboard (including safety barrier) by the mine communication cable, and it is strictly prohibited to use the earth as the loop. It is strictly prohibited that the dispatching telephone is powered by the underground local power supply or connected to the dispatching switch through the active repeater. The communication distance from the dispatching telephone to the dispatching switch without repeater shall not be less than 10km. 64. Distance from the heading face Telephone shall be installed within 30-50m; telephone shall be installed within 10-20m from both ends of the coal mining face; telephone shall be installed in the middle of the roadway when the roadway length of the mining face is more than 1,000m. 65. Lightning protection and grounding devices and facilities shall be provided at the wellhead of the machine room and the communication cables entering the well 。 66. Underground base station . The base station power supply, telephone and broadcasting speaker shall be set in a place where it is convenient for observation, debugging and inspection, and the surrounding rock is stable, well supported, free of water and sundries. 67. The supporting equipment of the underground communication system of the coal mine shall comply with the relevant standards. ? Those included in the management of safety marks shall obtain the safety marks for the products used in coal mines. 68. The mine shall be equipped with an emergency broadcasting system. ? Ensure that the underground personnel can hear the emergency instructions clearly. Eight. Management and maintenance 69. Coal mine should be established and improved The "six systems" management organization is equipped with management personnel, professional and technical personnel, on-duty personnel and maintenance personnel. 70. Coal mine should be established and improved "Six systems" management system, clear responsibilities. " The "six systems" management organization implements a 24-hour duty system. When the system sends out information such as alarm, power failure, abnormal feed and system failure, it will report and deal with it in time. 71. Coal mines should be strengthened Daily management of "six systems", sorting out and improving basic data such as drawings of each system. 72. Coal mine should be changed with underground production system Adjust, supplement and improve the "six systems" in a timely manner. 73. Emergency drill system should be established in coal mine Scientifically determine the route to avoid disasters, prepare contingency plan, and conduct a joint emergency drill of the "six major systems" once a year. 74. Before entering the well, the electrical equipment of the "six systems" should be checked for its safety performance such as "product certificate", "safety mark of coal mine products", explosion-proof and various protective functions. 75. Coal mine should strengthen daily maintenance of system equipment ? Regularly check the intactness of each system, regularly carry out debugging and calibration, and timely upgrade and expand the system functions and monitoring scope to ensure that the equipment performance is intact and the system is sensitive and reliable. 76. The coal mine shall test the discharge capacity or standby working time of the standby power supply at least once a quarter. 。 If the standby power supply cannot ensure that the continuous working time of the equipment reaches 80% of the standard time, it shall be replaced in time. 77. The maintenance personnel of the "six systems" shall regularly check and test the intact state of the facilities, equipment and accessories in use, find problems and deal with them in time, and report the results of inspection, testing and treatment to the mine dispatching center station. 78. Any subsystem in the "six systems" shall be maintained immediately in case of failure, and safety technical measures must be formulated before resuming normal operation to ensure the safety of operators within its service scope. 79. "Six systems" management system. Including post responsibility system of management and maintenance personnel, duty system, operation procedures, safety measures during fault handling, provisions on duty, operation and maintenance personnel allocation and training, safety instrument measurement and inspection system, etc. 80. System operation and management data, including equipment layout Equipment standing book, statement, duty record,Tapered Rock Bit, maintenance record, list of equipment and facilities, product safety mark certificate and inspection report. Return to Sohu to see more Responsible Editor:. wt-dthtools.com

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