1 accident risk analysis
Possibility, harm degree and influence scope of the accident: For details of the possibility, harm degree and influence scope of the accident, please refer to the Statistical Table of Accident Risk Classification in Buliangou Coal Mine in the comprehensive emergency plan.
2 Basic principles of emergency response
1) adhere to the principle of "people-oriented" and "safety first".
2) Adhere to the principle of giving priority to preventing accidents from expanding.
3) Adhere to the principle of saving the survivors first and then the victims.
4) Find out the real cause of suffocation and restore the ventilation system in time.
3 emergency organization and responsibilities
3. 1 The emergency organization system is the same as the comprehensive emergency plan.
3.2 Not even ditch coal mine emergency rescue headquarters responsibilities with comprehensive emergency plan.
4 Prevention and early warning
4. 1 Hazard monitoring
4. 1. 1 monitoring method and hazard monitoring method
4. 1. 1. 1 technical control
1) in accordance with the "coal mine safety regulations" and the relevant provisions of the prevention and control of toxic and harmful gases such as gas, all underground working faces and points are equipped with monitoring sensors that meet the requirements, and the comprehensive safety monitoring system is regularly maintained to make it run normally.
2) Equipped with post personnel and various gas detection instruments to detect the concentration of toxic and harmful gases in various working faces and places underground in time.
4. 1. 1.2 management control
1) Establish and improve the rules and regulations and operating procedures for the management of toxic and harmful gases, strengthen the education and training of personnel, and ensure the safety of personnel; The second is safe operation.
2) Clear responsibilities and regular inspection.
3) Strengthen the daily management of toxic and harmful gases.
4) Pay special attention to information feedback and rectify hidden dangers in time.
4.2 Preventive measures
4.2. 1 Measures to prevent toxic and harmful gas accidents
1) adhere to the normal mining sequence, and the working face adopts backward mining. The working face is mined according to the designed mining height, with less top coal and floating coal, which accelerates the mining speed and reduces the probability of coal spontaneous combustion.
2) Assign special personnel to conduct on-the-spot investigation on the surface above the working face every week. If surface collapse and cracks are found, timely arrange filling to reduce surface air leakage.
3) Wind-proof facilities should be set at the return air corner of the coal mining face to reduce the air leakage in the goaf.
4) Sprinkle stone powder on the cut-off mining lines (main and auxiliary retracement channels and roadways).
5) Close the mined-out area in time, and the working face must be permanently closed within 45 days after mining. Sealing must be carried out in accordance with the "one ventilation and three prevention" facilities construction specifications and construction safety technical measures to ensure tight sealing and no air leakage.
6) Designated personnel shall regularly measure the temperature, CO, CO2, CH4, H2S, O2 and other indicators of various places, mined-out areas, drainage (water exploration) boreholes and sealed walls, and strengthen the observation of sealed walls, and handle problems in time when found.
7) The working face should be inspected by full-time gas inspectors, and the concentration of carbon monoxide and oxygen in the upper corner must be detected at the same time. Team leaders and tailors must wear portable oxygen and carbon monoxide detectors. If the gas concentration does not meet the requirements, people should be evacuated regularly and measures should be taken to deal with it.
8) Don't use the roadway to be closed in time to prevent a dead end. Put an end to windless roadway.
9) Clean floating coal in time to reduce the oxidation probability of floating coal.
10) Strengthen the management of mine fire prevention and extinguishing, improve the organization of safety production management, equip with fire prevention and extinguishing inspectors, and equip with sufficient fire prevention and extinguishing monitoring instruments and equipment in accordance with the provisions of the "Coal Mine Safety Regulations" to ensure safety in production.
1 1) Strengthen the safety education and training for employees, formulate and improve the emergency plan for toxic and harmful gas accidents in mines, and conduct drills and revisions on a regular basis.
12) fully consider the need to prevent spontaneous combustion when designing, and arrange a reasonable and stable ventilation system and a reasonable roadway development layout.
13) according to the geological and mining conditions of each mining area, specific measures to prevent spontaneous combustion are formulated in the mining operation regulations of the mining face, and they are seriously implemented.
14) flammable items such as cotton yarn and cloth ends are not allowed to be thrown about after use, and must be handled in time after use. It is forbidden to use non-flame retardant rubber appliances, cables, belts and plastic products underground.
15) Improve the underground fire-fighting pipeline, and the dust-proof pipeline doubles as the fire-fighting pipeline. It is required to install a drainage "three-way" door every 100m. ..
16) The underground fire-fighting materials warehouse is fully equipped, and the ventilation preparation team is responsible for daily inspection and storage. Fire fighting equipment shall be replaced in time and shall not be used for other purposes.
17) underground water (including water storehouse) should be discharged in time.
18) blasting shall be carried out as required. When blasting, all personnel in the return air flow should be evacuated.
19) further improve the "eight systems" (especially the "six systems") of the mine.
20) Continuously improve the mine ventilation system to prevent gas accumulation.
2 1) Wash the floating dust in the roadway in time to prevent spontaneous combustion and explosion of coal dust.
22) Regular and irregular maintenance of electrical equipment and facilities to prevent electrical explosion.
23) All underground personnel should wear self-rescuers that meet the requirements.
24) Strengthen the safety knowledge training of employees, achieve "three no injuries", and improve employees' safety awareness and self-help and mutual rescue ability.
4.3 Early warning conditions
When the concentration of toxic and harmful gases in any place underground reaches or exceeds the provisions of the "Coal Mine Safety Regulations", and when gas poisoning and suffocation accidents occur.
5 information reporting procedures
Same as the comprehensive emergency plan.
6 emergency treatment
Same as the comprehensive emergency plan.
6. 1 Disposal measures
1) In case of toxic and harmful gas accident, the field personnel shall immediately report to the mine dispatching room, and the mine dispatching room shall immediately notify relevant leaders and units to stop working and evacuate personnel. And immediately organize people in disaster areas and threatened areas to wear self-rescuers and evacuate the scene according to the disaster avoidance route.
2) When a disaster occurs, the headquarters will order the dispatching room to inform the underground central substation and other related substations to stop supplying power to the accident area.
3) Immediately organize a rescue team to investigate, accurately find out the nature, cause and scope of the accident, the number and location of people in distress, the ventilation and gas situation of the roadway, and provide a reliable basis for formulating disaster relief plans. Before entering the disaster area for rescue, rescue team members should find out the underground accidents and formulate measures to control airflow and prevent continuous explosion. Pay attention to check the gas situation and gas changes along the way to ensure the safety of disaster relief personnel.
4) Quickly organize two rescue teams to rescue the victims. The team arriving at the scene of the accident first scouted the explosion area, checked the content of toxic and harmful gases, and actively rescued the trapped people according to the principle of saving the seriously injured and slightly injured first, and then saving the victims. When rescuing trapped people, pay attention to the posture and backward direction of the victims and make records. During the rescue process, it is forbidden to enter the explosion area without wearing a respirator to prevent poisoning from expanding the accident.
5) While rescuing the victims, organize personnel to quickly restore ventilation in the accident area.
6) When power transmission is resumed, the gas inspector must check that the concentration of harmful gas in the power transmission area does not exceed the standard. After reporting to the disaster relief headquarters, the headquarters ordered power transmission to the designated place step by step according to the principle of gas supply first and then power transmission.
7) If the roadway in the accident area is far away, the temperature is high, the smoke is heavy, the roadway roof caving is serious, and the concentration of toxic and harmful gases is within the allowable range, local fans can be installed, air pipes can be connected in sections, and smoke can be diluted in sections to rescue the victims. When there is high temperature and high concentration gas, this method shall not be adopted.
8) In the process of disaster relief, designate a special person to check the concentration of toxic and harmful gases and observe the changes of gas and airflow in the disaster area. When there is a danger of secondary accidents, disaster relief personnel must immediately evacuate to a safe place, and only after taking measures to eliminate the danger of accidents can rescue and relief work be resumed.
9) When harmful gas seriously threatens the return air personnel, in order to save lives in an emergency, regional or local counter-wind can be taken to rescue the trapped personnel on the return air side when the personnel on the intake side have been safely evacuated, but careful analysis and action must be taken to avoid expanding the accident.
10) When a disaster occurs underground, every worker should avoid disaster and protect himself in the disaster area or the area affected by the disaster.
1 1) After the accident, the people in distress should immediately carry the self-rescuer, and help the injured who can't walk to evacuate to the fresh air along the disaster avoidance route, and report to the mine operation department immediately to wait for rescue.
12) personnel near the accident should try their best to understand and judge the nature, location and disaster degree of the accident, and quickly report to the operation department through various means to inform relevant personnel of the disaster situation. Explain the time, place and number of people in distress. , and observe the abnormal phenomena (gas state, smell, etc. ).
13) active rescue: according to the disaster situation and site conditions, on the premise of ensuring their own safety, take active and effective methods and measures, put into site rescue in time, control accidents to a minimum, and minimize personal injuries and losses.
14) safe evacuation: evacuate to the safety exit quickly according to the disaster avoidance route. Try to choose the route with the best safety conditions and the shortest distance and evacuate the dangerous area quickly. Pay attention to protection when retreating.
15) properly avoid disasters: if it is impossible to evacuate the disaster area safely in a short time (roof caving blocks the sidewalk, and it is impossible to reach a safe place within the effective working hours of the self-rescuer, etc. ), should quickly enter the temporary shelter cavern built in advance or nearby quickly, or use compressed air self-help device to avoid disasters properly. In the process of avoiding disasters, we should strive to improve and maintain our own living conditions, extend our living time and wait for rescue.
16) calm down and don't panic, judge the scene of the accident and your position.
17) quickly equipped with self-rescuer, and moved to a safe place as soon as possible. Pay attention to the threat of continuous accidents.
18) it is difficult to retreat, so you must enter the well-supported cavern and compressed air self-help device to escape as soon as possible.
18) pay attention to the living conditions in the shelter, try to improve when there is danger, and transfer when conditions permit.
6.2 Disaster avoidance route:
6.2. 1 Under normal ventilation conditions:
6.2. 1. 1 coal mining face → air intake roadway of coal mining face →6 coal auxiliary transportation alleys → auxiliary inclined shaft → ground.
6.2. 1.2 heading face → heading gateway →6 coal auxiliary transportation alleys → auxiliary inclined shaft → ground.
6.2. 1.3 Other locations, cavern →6 coal auxiliary transportation alleys → auxiliary inclined shaft → ground.
6.2.2 When the auxiliary inclined shaft is blocked or impassable:
6.2.2. 1 coal mining face → coal mining face enters gateway →6 coal auxiliary transportation alleys → air intake shaft → ground.
6.2.2.2 heading face → heading gateway →6 coal auxiliary transportation alleys → air intake shaft → ground.
Other locations and chambers in 6.2.2.3 →6 coal auxiliary transportation alleys → air intake shaft → ground.
6.2.3 In case of headwind:
6.2.3. 1 coal mining face → coal mining face return air gateway →6 coal return air alleys → total return air alleys → return air shaft → ground.
6.2.3.2 heading face → heading gateway →6 coal return air lane → total return air lane → return air shaft → ground.
Other locations and cavern in 6.2.3.3 →6 coal return air alleys → total return air alleys → return air shaft → ground.
6.2.4 underground disasters, resulting in mining face gateway or roadway damage congestion, unable to evacuate, should be under the unified command of the operation department, timely into the underground temporary and permanent refuge cavern to avoid disasters, waiting for rescue.
7 emergency support
7. 1 Storage of emergency materials and equipment
Mine ground supply station, ground fire-fighting material warehouse and underground fire-fighting material warehouse shall be equipped with tools, fire-fighting equipment and engineering materials according to regulations, and the operation department shall take the lead in regular supervision and inspection, and the material supply department shall be responsible for material replenishment to ensure that emergency materials can meet emergency needs. The material supply department and the dispatching room shall ensure the reserve of emergency materials, and shall not misappropriate them at will, and shall conduct regular inspection and maintenance. The type, quantity, performance, storage location, management responsible person and contact information of emergency materials and equipment shall be specified. (See Annex III of the list of fire-fighting materials).
7.2 Emergency Relief Materials and Equipment Scheduling Mode
When the supply of on-site emergency materials and equipment can't meet the needs, request the command center to give an order quickly, and the material supply center will call all kinds of electromechanical equipment such as drainage, power supply, switches and cables to implement emergency rescue and disaster relief.
7.3 Self-rescuer management
Underground workers carry compressed oxygen self-rescuer, which is managed, maintained and calibrated by ventilation preparation team.
7.4 Management of First Aid Equipment
The infirmary should be equipped with corresponding medical treatment drugs, equipment and technical personnel to improve its ability to deal with accidents.
7.5 Transportation safety
Mine dispatching room, comprehensive management department and motorcade must ensure that vehicles are on duty 24 hours a day. After a personal safety accident, all underground vehicles must immediately make way for rescue vehicles; According to the ground traffic situation, when necessary, the emergency rescue headquarters should coordinate the public security traffic police department to control the road traffic at the scene of the accident in time, and set up special emergency rescue channels as needed to ensure the timely delivery of relief materials, equipment and personnel to meet the needs of emergency treatment.
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