Question

Incubation period is not related to

• A. Crossing point temperature of coal
• B. Panel size
• C. Seam thickness
• D. Explosibility of coal dust

Hint:

Monitoring the incubation period helps in predicting and preventing spontaneous combustion in coal mines.

Answer 1

The Correct Option is D

In the context of coal mining, the incubation period refers to the time it takes for spontaneous combustion (self-heating) of coal to develop into an open fire. Factors like the crossing point temperature of coal (the temperature at which coal’s temperature rise matches the surrounding environment due to oxidation), panel size, and seam thickness directly influence the likelihood and timeline of spontaneous combustion, thus relating to the incubation period. However, the explosibility of coal dust pertains to the risk of dust explosions, which is a separate phenomenon not directly tied to the incubation period of spontaneous combustion. Thus, the correct answer is Explosibility of coal dust.