Quzhou City, the existing underground non-coal mining enterprises × home, divided by jurisdiction, municipal 2, Qujiang 7, Yongyu 2, 4 Jiangshan, Changshan 2, civilized one; points (click to open up the way mine There are 5 Pingyi developments (including 1 in Lijiang, 2 in Longyou, 2 in Jiangshan), 1 in inclined wells (1 in Changshan), and 4 in shaft development (3 in Minjiang, 1 in Jiangshan) Home), there are 8 joint developments (2 at the municipal level, 2 at the Minjiang River, 2 at Jiangshan, 2 at Changshan, and 1 at Kaihua). Mined minerals are: calcite, pyrophyllite, fluorite, pyrite, zinc ore, copper ore, lead, zinc, bauxite, tungsten, tin, uranium ore.

Second, the status quo

1. There is a lack of geological data. Some mines start from prospecting and explore the side.

2, the conditions are simple, the production system is not perfect, especially the ventilation system is owed, the windshield is leaking, the wind tunnel is short-circuited, etc., the mine uses the local fan ventilation, natural ventilation still exists. There are small horse-drawn carriages in the winch, and there are many without the water pump.

3, small scale, heavy burden, high cost, not making money. Affected by the current financial crisis, the price Dimi, nonferrous metal mines in shutdown state.

4. The enterprise is in difficulty and the safety investment is not in place.

5. The structure of the workforce is aging, with great liquidity and low quality.

Third, the death toll in 2008

In 2008, there were 8 production safety accidents in non-coal mine enterprises in the city, with 8 deaths, including 6 underground non-coal mine enterprises. The total number of deaths and the total number of deaths were 75%. Among the 6 fatal accidents in underground mines, 2 people died at the municipal level, and 4 people died in the Minjiang River, a record high.

Fourth, the cause analysis of the accident

There are three main reasons for the underground mine liability accidents in our city: one is that the object is insecure, the other is the unsafe behavior of the person, and the third is the management defect. The analysis is as follows.

a) on the unsafe state of the object

1. Occurrence conditions of ore bodies

1) Most of the minerals involved in mining are metals and non-metals, which are sedimentary deposits or structurally filled deposits. At the time of formation and formation, the deposit is affected by geological processes and geological structures, destroying the original state, causing changes in the occurrence, resulting in joints, fissures, and even fractures, which may be related to groundwater; some fillings account for mineral structure Changes, the physical and mechanical properties of the ore also changed, and these later changes have caused difficulties in the mining of the deposit.

2) The properties of the surrounding rock (mineral composition, structure, structure, cement and physical and mechanical properties) are directly related to the stability of the surrounding rock. The large tea companies Quzhou Uranium ore Well No. 5 green sporadic third layer (light green, has a block structure, a sintered structure tuff rock mainly composed of feldspar, quartz crystal fragments and rhyolite tuff The rock is composed of volcanic ash , and the alteration is mainly kaolin and green Yili water mica . The rock has a hardness of 6-8, the structure is loose, soft, impervious, airtight, and the third green layer is shallow. Green, with a massive structure, fused to the tuff structure, the rock is mainly composed of feldspar, quartz crystal chips and rhyolites such as rhyolite and tuff. The rock is volcanic ash cementation, and its alteration mainly includes kaolin and green Yili water mica. The rock has a hardness of 6-8, the structure is loose, soft, impervious to water, and airtight.) Prolonged exposure to the air is the direct cause of the 2008 "4.24" accident.

3) The stability of the surrounding rock is directly related to the mine roof accident. The deposits analyzed in the previous section are affected by geological processes and geological structures, and are also applicable to the surrounding rock of the deposit. For example, the “6.7” accident that occurred in Lingshan Mining Area of ​​Zhejiang Juhua Chemical Mining Co., Ltd. in 2008 is an example. The working face ore and rock have undergone multi-stage ore-forming tectonic activities, and the tectonic fracturing phenomenon is common. It is filled along the fissures, cemented the breccia crushed material, and the localized muddy weak interlayer, the formed ore body and mineralization zone are inevitable. It is the development of cracks and the decrease in strength. Local exposure or external force, such as the impact of the rocker bucket, is more likely to cause the body to slip or collapse.

2, production conditions

1) The ventilation system is not perfect. The main fan is replaced by a local fan; the ventilation facilities such as the damper, wind bridge, and wind barrier are not set or imperfect; the ventilation circuit is disordered, and the short circuit and the air leakage are serious. In 2007×month, the ventilation system of No. 2 well in Xinchang Tungsten and Tin Mine of Changshan County was not formed, resulting in poisoning and suffocation accident on the working face and one death.

2) Waterproof and drainage facilities are not in place. The water tank has a small volume; there is no pump room, no spare water pump; only one drainage pipe, etc., is not prepared for the prevention of torrential rain. In 2008, the “6.28” torrential rain flooded the Chishuwan calcite mine (shaft mining) in the lower Pingtian Village of the upper reaches of the Minjiang District.

3) The “mining plan” cannot be implemented, and the production system cannot be formed for a long time. An underground mine in Qujiang District has requested the intermediary to modify the “exploitation plan”.

4) Business difficulties, insufficient security investment, and high security debts. A considerable number of mines have not solved the problems such as the neutral point of the transformer that supplies power to the underground, the wet ground operation and the like. According to the requirements of the regulations, underground mines must entrust an intermediary to regularly measure dust and measure wind, which is difficult.

b) the performance of human unsafe behavior

1. Personnel quality conditions

1) The person in charge of the enterprise and the safety management personnel holding the safety qualification certificate do not have the safety production knowledge and management ability corresponding to the production and operation activities of the unit.

2) There are still cases of unlicensed operation in special jobs.

3) There are only a handful of engineers and technicians (including hiring).

2. The workforce is aging, the structure is irrational, and the liquidity is large.

3. The rules and regulations have not been implemented in their own jobs, and the phenomenon of “three violations” has occurred from time to time.

c) Management of lack of performance

1. There are few rules and regulations for enterprise organization learning, and many employees do not know. It should be said that the rules and regulations of mining enterprises are relatively sound now, and there are several books. The mine manager has studied several times, but he is embarrassed. I can think of employees.

2. The “three-level” education of new employees in the form of business is not implemented. In December 2008, the number of the cage cage accident occurred at the Chishuwan calcite mine in the lower Pingtian Village of the upper reaches of the Qianjiang District. The victim was a new worker who had just arrived at the mine and did not have a tertiary education.

3. The enterprise's qualification review of the outsourcing project (engineering) is not strict, and the daily safety management adopts “sending escrow”. The “4.24” accident of Zhangzhou Uranium Company is an example.

4. The safety hazard investigation is not timely, and the hidden danger rectification measures are not implemented.

5. Accident emergency rescue organizations and emergency rescue measures are not implemented, and accidents are panicked.

6. The lack of on-site management, or the manager's kindness.

V. Security measures

Explain from two aspects.

a) Safety management

1. Improve safety production rules and regulations

1) Safety production responsibility system

The responsibility system for production safety cannot be “once and for all” and should be reviewed regularly and signed annually. According to the actual situation of the mine, there are specific assessment indicators, and the year-end assessment is honored.

2) Safety production rules and regulations

At present, the mining enterprises in our city have entered the second round of evidence collection (security) period, and the rules and regulations are relatively sound. It is the embodiment of the company's specific implementation of the relevant safety production laws and regulations, and is the foundation for the survival and development of enterprises. The key lies in the fact that business leaders should personally study, implement, and implement their work. They must combine the safety training and education of the mine to formulate a definite and feasible learning plan, and implement it to achieve the desired results.

3) Operating procedures for various types of work and post safety

Underground mining enterprises must establish and standardize the following safe technical operating procedures: operating procedures for hoisting operators, operating procedures for tanks (hooks), operating procedures for rock drill drivers, operating procedures for blasters, vertical drain pump operation for shafts and inclined shafts Procedures, main fan operating instructions, electric fitter operating procedures, metal cutters and welders operating procedures, underground transport operators operating procedures, air compressor operator operating procedures, miners operating procedures, etc. The established ones must be perfected, and those that have not been established should be filled immediately. Don't "write on paper, stick it on the wall, and don't implement the action."

2. Strengthen safety education and training

Safety education and training are the foundation for doing a good job in corporate safety. Safety education and training should expand the educational front to prevent passing through the field and achieve the purpose of learning and use. Now emphasize:

1) Mining enterprises shall conduct safety production education and training for employees, ensure that they have the necessary safety production knowledge, be familiar with relevant safety production rules and regulations and safety operation procedures, and master the safe operation skills of this position. Those who are not qualified for safety production education and training shall not be employed.

2) The main person in charge of the enterprise and the mine manager shall have safety professional knowledge, have the ability to lead safe production and handle mine accidents, and have passed the training according to law and obtained the safety qualification certificate.

3) All employees receive at least 20 hours of on-the-job safety education each year.

4) The operators of newly entered underground mines should receive safety education of no less than 72 hours. After passing the examination, they should be led by the old workers for at least 4 months. They are familiar with the operation technology of this type of work and passed the examination before they can work independently.

5) Personnel who change jobs should be trained in the safe operation of new positions.

6) Special operating personnel shall, in accordance with relevant state regulations, obtain special operation operation qualification certificates through special safety operation training before they can work on the job.

7) The safety education and training of the operators and the results of the assessment shall be recorded and archived.

3. Ensure safety investment and improve safety production conditions

1) According to Article 13 of the “Decision of Zhejiang Provincial People's Government on Effectively Strengthening Safety Production Workers” (Zhe Zhengfa [2004] No. 21): “Building a safety cost system for production enterprises in high-risk industries, ... non-coal mines Less than 2% of sales in the current year.

2) At the same time as the production plan is prepared, the safety technical measures plan must be prepared at the same time. The required funds, materials and equipment must be included in the financial and material plans.

3) The safety measures plan includes technical measures aimed at improving the working conditions of enterprises, preventing casualties and occupational diseases.

4) The enterprise shall sign labor contracts with all employees and handle social work injury insurance.

5) The implementation of the safety technical measures plan should be summarized annually.

4. Accident emergency rescue plan

1) Organized and implemented the emergency rescue plan for production safety accidents of the unit. Emphasis should be placed on the preparation of emergency rescue plans for accidents such as catastrophic catastrophe, poisoning asphyxiation, permeable water and mining-induced geological disasters.

2) The person in charge of the enterprise shall be the on-site commander of the accident emergency rescue organization, responsible for directing and coordinating the handling of emergencies.

3) Formulate emergency measures: emergency rescue personnel, division of labor, contact information, responsibilities; rescue equipment and transportation; sign agreements with cooperative rescue units; familiarize each employee with emergency plans and ensure the implementation of emergency rescue plans.

4) The company organizes at least one mine disaster drill every year. According to the actual situation of the drill, the plan is adjusted and revised in time.

5. Explore the establishment of a corporate security production risk mortgage system.

b) Security technology

1. Strictly implement the “mining design” or “mining plan” and improve the production system as soon as possible. In particular, we must improve the ventilation system, upgrade the transportation system, drainage system and mine double outlets as soon as possible.

2, determined to solve the problem of the underground power supply neutral point is not grounded.

3. Intensify the investigation of hidden dangers, implement measures for rectification of hidden dangers, and eliminate accidents in the bud. In particular, take precautions against dangerous and dangerous factors:

1) Preventing countermeasures against roofing

(1) The size, shape and uprightness of the pillar (including the top column, the bottom column and the column, etc.) should be strictly maintained, and should be inspected and managed by a person to ensure its stability during the entire utilization period. The pillars and rock pillars reserved in the design shall not be mined or destroyed within the prescribed time limit.

(2) Supporting measures shall be taken for the loose and unstable mining face, mining and cutting roadway of surrounding rock; the support damaged by blasting or other reasons shall be repaired in time to confirm the safe and accurate operation.

(3) For the recovery operation, the top plate and the two sets of pumice should be treated in advance to confirm the safety. Rocks should not be drilled and treated at the same stop. In the operation, it is found that the warning signs should be stopped for processing; in the face of danger signs of roofing, the operator should be immediately notified to evacuate the site and reported in time. When treating pumice in the underground, other operations that hinder the treatment of pumice should be stopped, and the working face should be strengthened especially for the "ball".

(4) A roof management system should be established. For the stopway where the roof is not stable, there should be monitoring means and treatment measures.

(5) The entrance to the abandoned wells and diverticulum should be closed in time. Before the closure, there should be a clear sign at the entrance to prohibit personnel from entering. Scrapped shafts, inclined shafts and flat lanes, and fences with a height of not less than 1.5 m should be placed around the entrance to the ground, and the name of the original shaft should be indicated. The goaf should be observed regularly and abnormalities should be discovered. Persons should be evacuated in time.

(6) If a large area of ​​ground pressure activity is found, the operation should be stopped immediately and the personnel should be evacuated to a safe place.

2) Measures to prevent water leakage accidents

(1) Mining enterprises should investigate and verify the old wells and old goafs within the mining area, the existing water production areas, aquifers, karst belts, geological structures, etc., and fill in the hydrogeological maps of the mining areas. The source of the pit water should be ascertained, the movement law of the water in the mining area should be mastered, the hydraulic relationship between the mine water and groundwater, surface water and atmospheric rainfall should be ascertained, and the possibility of sudden water inrush from the mine should be judged.

(2) For areas close to water bodies or areas that may be related to water bodies, the principle of “doubt must be explored, first explored and then excavated” should be adhered to, and water exploration design should be prepared. The position, direction, number, aperture, depth of each drilling and lead distance shall be specified in the design according to the head height, rock structure and hardness.

(3) If the working surface is “sweating”, the roof is drenched, the air is cold, the fog is generated, the red water, the water is called, the water is poured in the floor, or other abnormal phenomena appear in the road surface or other locations. Immediately stop working and report to the competent mine manager to take action. If the situation is urgent, an immediate alert should be issued to evacuate all personnel at locations that may be threatened by water.

(4) Filling the obvious cracks and collapse pits on the surface, and digging the drainage ditch to minimize the leakage of atmospheric precipitation into the well. Stop small mines in shallow mining; observe surface dynamics regularly and find problems in a timely manner.

(5) The main drainage equipment in the underground shall be composed of at least three pumps of the same type. The working water pump should be able to discharge the normal water inflow amount within 20 hours; in addition to the maintenance pump, other pumps should be able to discharge the maximum amount of water in a day and night within 20 hours. Two identical drain pipes should be installed in the wellbore, one of which works and one spare.

(6) The water tank shall consist of two separate roadway systems. For mines with large water inflow, the volume of each water tank should be able to accommodate the normal water inflow from 2h to 4h. Generally, the total volume of the main water tank of the mine should be able to accommodate the normal water inflow from 6h to 8h. The water inlet of the water tank should have a scorpion. The silt in the ditch, sedimentation tank and water tank should be cleaned regularly.

3) Ventilation safety and measures to prevent poisoning and asphyxiation

(1) The mine should adopt mechanical ventilation. The wind quality, air volume and wind speed should meet the requirements of relevant regulations; before the formation of the ventilation system, the mining operation should not be carried out.

(2) The main inlet air flow of the mine shall not pass through the goaf and the subsidence area. When it is necessary to pass, the strict ventilation and false alley drainage shall be built.

(3) The main air inlet and return air lanes should be maintained frequently, keep clean and smooth, and should not stack materials and equipment.

(4) The goaf should be sealed in time. After the mining of the stope, all the roadways that affect the normal ventilation that are connected to the goaf should be closed.

(5) Stopping the operation and removing the ventilation equipment without the wind tunnel, the single head uphill or the long single roadway, fences and warning signs shall be provided to prevent personnel from entering. If re-entry is required, ventilation and analysis of the air composition should be performed to confirm that safety is acceptable.

(6) Local ventilation equipment should be installed for the driving face and the poorly-ventilated stope. The local fan should have a perfect protection device.

(7) The distance between the air duct mouth of the local ventilation and the working surface: the pressure-in ventilation should not exceed 10m; the extraction ventilation should not exceed 5m; the mixed ventilation, the outlet of the air inlet should not exceed l0m, and the air duct should be taken out. The inlet should be pressed into the outlet of the air duct by more than 5 m.

(8) Before personnel enter the single-head work surface, local ventilation equipment should be ventilated to ensure that the air quality meets the operational requirements. When a single working face is operated, the local fan should run continuously.

(9) After blasting, it must be ventilated for at least 30 minutes before entering the inspection;

(10) The air cylinder should be hung straight and firm, the joints should be tight, avoid car collision and gun collapse, and should be maintained frequently to reduce air leakage and reduce drag.

4) Safety measures to prevent shotgun and gunpowder explosion

(1) The underground blasting work shall be performed by a full-time blaster.

(2) Full-time blasters should be specially trained, qualified for examinations, and certified to work;

(3) The blasting operation shall entrust a qualified design unit and design personnel to prepare the blasting instructions; the full-time blasting personnel shall perform the operations in accordance with the blasting operation instructions.

(4) When blasting, a warning sign should be set up in the warning zone. The "warning signal", "initiation signal" and "de-alarm signal" issued shall adopt the sound signal suitable for the downhole, and clearly define and announce the meaning of each signal representation.

(5) Explosives and detonators used in the underground working face should be stored in the special blasting equipment box that is locked, and should not be thrown away. The blasting equipment box shall be placed at a location where the roof is stable, the bracket is complete, and there is no mechanical and electrical equipment. The blasting equipment box should be placed in a safe place outside the warning line each time it is detonated.

(6) After blasting, adequate ventilation should be carried out to maintain good ventilation in underground blasting operations.

(7) Through the blasting method to penetrate the roadway, there should be accurate measurement drawings, and each shift should indicate the progress on the map. When the working faces are 15m apart, the surveying personnel shall give notice in advance; after that, only the front of one work face shall be excavated, and the guards shall be dispatched to the safe place where the two sides lead to the working face, after all the operators are evacuated to a safe place. The standard is detonated.

(8) When one of the two parallel roadways with a spacing of less than 20 m needs to be blasted, the operator of the adjacent roadway working face shall be notified to evacuate to a safe place.

(9) Before loading the metal, check the roof of the stope to confirm that there is no pumice and no risk of roofing.

(10) According to the requirements of the Notice on the Elimination of the Use of Fire Detonators in Blasting Operations, fire detonators and fuses shall not be used in blasting operations.

(11) The underground transportation blasting equipment shall comply with the following regulations:

1 notify the driver and the signal worker in advance;

2 During the time of commuting or personnel concentration, blasting equipment should not be transported;

3 Except for blasting personnel and signal workers, other personnel shall not ride with the blasting equipment;

4 transporting ammonium nitrate explosives in cages, the loading height should not exceed the height of the compartment; transporting nitroglycerin explosives or detonators should not exceed two layers, and the layers should be cushioned;

5 When transporting nitroglycerin explosives or detonators in cages, the lifting speed should not exceed 2m/s; insulation measures should be taken when transporting electric detonators;

6 Blasting equipment should not stay in the wellhead room or the bottom hole yard.

(12) When manually transporting blasting equipment, the following provisions shall be observed:

1 Detonators and explosives should not be carried by one person at a time; detonators and explosives should be placed in special backpacks (wooden boxes) and should not be placed in their pockets; “After receiving the blasting equipment, they should be sent directly to the blasting site, and should not be littered. Rush

2 blasting equipment should not be taken in advance, and blasting equipment should not be carried in places where people gather;

3 The number of blasting equipment delivered by one person at a time does not exceed:

Detonator, 5000 rounds;

Unpacking (bag) to transport explosives, 20kg;

Carrying a box of bags of original packaging explosives [bags];

Pick up two boxes (bags) of the original packaged explosives.

4 When transporting blasting equipment by hand cart, the load capacity should not exceed 300kg. Safety measures such as anti-slip, anti-friction and spark prevention should be adopted during transportation.

5) Safety measures to prevent transportation damage and vehicle damage

(1) The driver of the winch, the driver of the hook, and the driver of the motor vehicle shall pass the training examination and pass the operation qualification certificate;

(2) The purchased lifting equipment must be special equipment for mine lifting. The mine lifting transportation system has safety protection devices such as anti-rolling and anti-dropping. The lifting transportation equipment should have regular inspection report, and the report must be within the validity period of the inspection. .

(3) The same layer of cages should not lift personnel and materials at the same time. When lifting the blasting equipment, the blasting operator responsible for transportation shall notify the middle (horizontal) signal worker and the hoist driver, and monitor the tank.

(4) The inclined shaft lifting must adhere to the principle of “no pedestrians, no driving, no pedestrians”, and it is strictly forbidden to mix people and things.

(5) Winch, cage, day wheel frame, anti-drop device, anti-sports device, over-rolling device, wire rope, coupling device, etc., must be inspected every shift to ensure safety before use.

(6) Operate in strict accordance with the operating procedures. Concentrate and work carefully. If abnormal conditions are found, they should be treated as parking. The reason has not been detected, the hidden danger has not been ruled out, and it is not allowed to restart the operation.

(7) It is strictly forbidden to mix people and things. It is strictly forbidden to discharge without electricity. It is strictly forbidden to fly the car. It is strictly forbidden to drive after drinking. It is strictly forbidden to work with sickness. It is strictly forbidden to drive the car. It is strictly forbidden to go to work, chat, and play.

(8) Regularly carry out maintenance and repair of lifting transportation equipment and facilities to improve the integrity of equipment and facilities.

(9) Downhole manual carts, cart personnel must carry miner's lamps. In poorly illuminated areas, the miner's lamp should be hung in the forward direction of the mine car's direction of travel; on a self-sliding slope, the vehicle must be secured with a reliable brake or wooden wedge; only one person can push a car. The distance between vehicles traveling in the same direction: the slope should be less than 10m below 5‰; the slope should be less than 20m if the slope is greater than 5‰; the slope should be less than 30m if it is greater than 10‰. It is strictly forbidden for cart personnel to ride across vehicles or to fly.

(10) If the vehicle passes through the laneway, the curve and the section with large slope, and the situation where two vehicles meet, some people in front or obstacles, etc., the police should be issued a warning sign or parking.

6) Measures to prevent electric shock safety

(1) Mine electrical workers must carry out professional training and hold certificates. When working, they must abide by relevant regulations and must not work alone.

(2) Underground electrical equipment should not be connected to zero. Mine transformers should be used underground. If ordinary transformers are used, the neutral point should not be directly grounded. The neutral point on the secondary side of the transformer should not lead to the current-carrying neutral line (N line). A transformer or generator whose ground neutral point is directly grounded shall not be used to supply power to the well.

(3) The electrical lines shall be implemented in accordance with the relevant regulations; the lighting and power lines shall be separately set. The selected downhole cable and its laying must meet the corresponding safety requirements.

(4) All working sites, safe passages and sidewalks leading to the work site should be illuminated. Lighting voltage: the transportation lane is not more than 127V; each working surface is not more than 36V.

(5) The metal casing, cable accessories, metal sheath, etc. of all electrical equipment in the underground shall be grounded. Metal structures close to the cable line in the roadway should also be grounded. The grounding system of the mine electrical equipment protection grounding system should be formed.

(6) Wire joints should be wrapped with insulating tape and should not be exposed; the knife switch should be kept intact.

(7) Electrical protection

1 installation of leakage protection device and leakage alarm device in the underground line;

2 In the transformer substation (box) on the side of the busbar, a lightning protection device is installed.

3 Every day, the duty electrician shall check the operation of the leak detection device (must be sensitive and reliable) and shall not cancel it arbitrarily.

4 Electrical equipment must have relay protection devices.

(8) Mine electrical workers shall comply with the following regulations:

1 For power outages and power transmissions of important lines and important workplaces, and for overhauling electrical equipment above 700V, work tickets issued by competent electrical engineering and technical personnel shall be held for the purpose of operation;

2 Do not electrify to repair or move any live equipment (including cables and wires); when repairing or moving, first cut off the power supply and completely discharge and ground the conductor;

3 During the power failure maintenance, all the cut-off switch handles should be locked. The electricity, discharge and grounding of the line should be checked, and the warning sign of “someone working, no power transmission” should be hung. Only those who perform this work have the right to remove the warning signs and send electricity;

4 should not be single-person work.

7) Safety measures to prevent ground collapse

(1) The mine side shall, according to the design, delineate the boundary line of the surface, and set obvious warning signs on the ground to prevent personnel from entering. Buildings must not be built on the boundary of the delineated surface. In this range, observation points should be set up, and regular observations should be made in a timely manner to make predictions. Take necessary safety measures when there is a large change in displacement.

(2) The top column and pillars left in the underground mining process shall be managed in accordance with the requirements of the operation regulations, and shall not be arbitrarily recovered;

(3) In the conditional area, the goaf can be filled by excavating waste rock.

(4) In the future, areas where collapsed pits occur should be filled in time to prevent hydraulic contact between the surface and the underground. If there is water accumulation, it should be drained. If there is water intrusion, it is necessary to build a water intercepting ditch.

4. Combine the implementation of safety standardization with the current safe production.

1) Establish a dynamic safety management system to truly implement the responsibility of safety production.

2) Highlight the risk identification and pre-control of each production link of the mine, minimize the hidden dangers that may occur during the operation, and ensure safe production.

3) Using the PDCA cycle method, after each work is completed, performance appraisal will be carried out to identify the deficiencies and problems, and then improve, improve, cycle, and then improve the intrinsic safety of the mine, thus establishing a self-constrained, continuous improvement safety production. Effective mechanism.

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