Mine fire is a serious hazard, so the prevention and control measures are very important

1. Prevention of fire outside mine

(1) All personnel are prohibited from carrying tobacco and ignition tools into the well. It is strictly forbidden to use open flame and smoke in the underground. Electric welding, gas welding and blowtorch welding shall not be carried out in the underground and wellhead room. In special cases, safety measures must be formulated and submitted to the relevant departments for approval; No fireworks or fire heaters are allowed within 20m of the wellhead room and ventilator.

(2) explosion-proof or intrinsically safe electrical equipment must be used in the mine to strengthen maintenance, ensure the good performance of the power system and electrical equipment, ensure the normal operation of mechanical equipment, and prevent accidents caused by electric spark, arc and friction heating.

(3) The use of safety explosives, do not pour out the flame extinguishing powder in the drug roll, do not put open guns, paste guns, do not use open fire, power line shooting; The hole sealing mud should be filled, and water cannon mud should be used; Loading, wiring and firing are strictly regulated. Avoid shooting flame generation.

(4) Gasoline, kerosene and transformer oil are not allowed to be stored underground. The lubricating oil, cotton yarn, cloth and paper used in the mine must be placed in iron drums with tight covers. The used ones should be sent to the ground regularly for disposal.

(5) The underground shall use non-delayed burning cables, flame retardant conveyor belts and flame retardant wind ducts according to regulations.

(6) The wellhead room, derrick and wellhead buildings, air inlet shaft, return shaft, adit, the connection of the main roadway, the main underground chamber and the substation in the mining area, etc., should be supported by non-combustible materials or dug in the rock roadway.

(7) Fire doors should be set up at the inlet wellhead and inlet adit to prevent wellhead fire and nearby ground fire from spreading to the well. Fire doors should be set up at the connection between the air inlet shaft and the bottom of the shaft car yard at all production levels, and the quality and flexible reliability of the fire doors should be checked regularly.

(8) The mine must be set up within 100m near the wellhead of the fire materials warehouse, underground each production level of the main transport alley should also be set up fire materials warehouse, reserve fire equipment, and fire train. Fire-fighting materials and tools must meet the needs of mine fire fighting, and are not allowed to be used for other purposes in peacetime. The underground powder store, charging room, winch room, water pump room and substation in mining area shall be equipped with sufficient fire extinguishing equipment.

(9) Each mine should build a surface fire pool. In the mining of the lower level mine, in addition to the ground fire pool, the water tank of the upper level can also be used as the fire pool. Fire hose should be laid in each main roadway under the mine, and fire faucets should be set up at a certain distance.

2. Prevention of fire in mine

Measures to prevent fire in mines involve all aspects of coal mine production:

(1) Reduce ignition hazards and prevent spontaneous combustion of coal.

In terms of mining technology, it is necessary to correctly choose the development mode, mining method and mining procedure of the mine, rationally arrange the mining area, and not arbitrarily excavate the specified section and interval coal pillar, so as to improve the inherent fire prevention ability of mining coal seams with natural ignition risk.

In terms of ventilation technology, it is necessary to choose a reasonable ventilation mode, correctly set up the facilities to control air flow, take pressure equalization fire prevention measures, strengthen ventilation fire prevention management, etc., in order to reduce air leakage, which plays an important role in preventing coal spontaneous ignition. Preventive grouting, injection of retarding agent, inert gas, etc.

(2) Grasp the warning of spontaneous ignition, timely ignition prediction and prediction, and eliminate spontaneous ignition in the "bud" stage.

(3) The various ignition hazards left over in the process of mining and production should be dealt with in time, such as strengthening the "three roads, maintenance, strengthening the treatment of abandoned lanes, timely filling of coal lane arches, timely treatment of high temperature fire points, etc.

(4) In the event of a fire under the mine, the first person found should directly extinguish the fire as far as possible and try to control the development of the fire. And to report immediately to the mine control room, explaining the location and nature of the accident, the scope of the situation. If the on-site personnel are unable to save, and personal safety is expected, in the case of finding out the fire, the disaster area personnel should quickly evacuate or withdraw into the refuge chamber as soon as possible. If the passage is blocked, a temporary refuge room should be built for self-rescue or waiting for rescue.