What is the effect of incombustible stemming on the flame of an explosion?

The presence of incombustible stemming has a significant effect on the characteristics of a flame resulting from an explosion, particularly in terms of both its length and duration. Incombustible stemming materials are often used in blasting operations to help contain the energy released during an explosion and to mitigate its effects.

When incombustible stemming is introduced into the blasting process, it acts as a barrier that suppresses the combustion process by limiting the amount of combustible material available for the explosion. This effectively reduces the length of the flame generated, as there is less fuel to sustain a long-lasting fire. Additionally, the duration of the flame is also decreased because the incombustible material does not contribute to the combustion process; once the explosion subsides, there is less residual flame since the available gases and heat are quickly dissipated.

This behavior is critical for safety in mining operations, where managing explosion impacts is vital for protecting personnel and minimizing damage to property. Understanding the role of incombustible stemming is essential for mine foremen who need to implement effective blasting techniques while ensuring safety protocols are followed.