CFD modeling of a tailgate ventilation condition in a longwall bleeder system
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Face ignitions at the longwall are a serious hazard in underground coal operations and can lead to a major mine explosion. Despite having methane monitoring systems mounted on the shearer and at various locations on the longwall face, undetected methane accumulations can still occur and result in face ignitions. With the use of Computational Fluid Dynamics (CFD), the interaction between the air flow at the longwall face and factors that contribute to accumulations around the face can be modeled and visualized in great detail. The results confirm that the tailgate corner of the longwall face is ...