What are the omens of spontaneous combustion of coal?

(a), the omens of spontaneous combustion of coal:

1, visual. With the naked eye, water vapor can be seen coalescing on the surface of the support or roadway, forming water droplets, commonly known as "coal wall sweating", which is the external signs of fire.

2, taste. People can smell kerosene, gasoline, turpentine or tar. Experience has proved that when people smell the tar flavor, spontaneous combustion of coal has developed to a fairly serious point.

3, temperature feeling. Coal in the process of spontaneous combustion to release heat, therefore, from the place of water and air temperature is higher than normal.

4, fatigue feeling. Coal in the process of spontaneous combustion, the production of carbon monoxide, carbon dioxide, so that the human body has a morbid reaction, such as headaches, mental disorientation, discomfort, and a feeling of fatigue.

(2), coal natural fire common place

Fault nearby, coal mining face into the wind lane, back to the wind lane and stopping line near the coal pillar, broken coal wall, the roadway of the high risk of the place, the confinement, skidding coal (gangue) eye, the coal bunker, the contact roadway and the floating coal accumulation of the high incidence of spontaneous combustion fire area.