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    Hidden dangers of mine ventilation system




    Does everyone know the safety risks of the underground ventilation system? Today,TDvent technicist will present to you numerous safety risks. Let's see how much you are familiar with safety risks.
    1. It fails to comply with the provisions of the "regulations", without bureau approval for series wind measures, diffusion wind, and old boring wind.
    2. The air volume in the driving face is insufficient.
    3. There is no plan for stopping the fan. When stopping the fan, fences, alarm signs, stopping the wind and electricity, and withdrawing people are not set.
    4. Privately stopping the main fan and adjusting the main fan.
    5. There is no wind or breeze operation.
    6. The local fan is less than 10 meters away from the return air outlet.
    7. Local fan circulates air.
    8. The local fan does not use a silencer or the silencer fails.
    9. The distance between the outlet end of the wind duct and the working face exceeds that stipulated in the "Operating Regulations".
    Mine Ventilation System Hidden Dangers to Share
    10. There is no use of an anti-gun collapse duct or the length is less than 9 meters.
    11. Do not use elbow wind or have a dead corner.
    12. Tiles are not installed in time.
    13. There is no special tool for high-top inspection.
    14. The tile inspector is not equipped with an optical gas detector or it fails.
    15. False inspection, missed inspection, and empty shifts occur.
    16. The tile inspector is out of position.
    17. When the gas limit is exceeded in the mining face and gas accumulates, the operation does not stop.
    18. "One gun three inspections" and "three people interlock release processing" are not implemented.
    19. Dry drilling is conducted, and water for dust suppression is not sprayed before and after the gun.
    20. No pressure air self-rescue device is placed.
    21. The fan and damper sensors are not installed or fail as per regulations.
    22. The gas alarm power-off device is not installed in accordance with regulations.
    23. The probe is well covered.
    24. The gas drainage pipe is damaged, leaks, and is less than 0.3 meters from the ground.
    25. The pumping station lacks fire extinguishing equipment.
    26. There is no fence and warning sign at the exit of the gas pipe.
    27. Dust arrears pipe is not used in the mining area, and the pipe has no water.
    28. There is a shortage of tees and valves.
    29. The transfer spray and purifying water curtain are not installed as per regulations.
    30. There is coal dust with a thickness of more than 2mm and a continuous length of more than 5 meters in the mine.
    31. Before closure, there are no fences, alarm signs, signs, or tile inspections.
    32. The distance between pedestrian doors is less than 5 meters, and the distance between traffic doors is less than the length of a train.
    33. The damper has no interlocking device or it fails.

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