Numerical Simulation of Blasting Fume Diffusion in Single- end Roadway in Plateau Sulfide Mine Based on Fluent

Abstract Poisoning and Suffocation accident is one of the main accident types in mine. Effective local ventilation is the key measure to prevent poisoning and Suffocation accident by blasting fume. The main factors affecting the blasting fume diffusion of single-end roadway in plateau mine include the amount of explosive in blasting, the ventilation mode, the ventilator position, and the ventilation volume. In this paper, Fluent software is used to simulate and study the influence of the amount of explosive in blasting, the ventilator position, and the ventilation volume on blasting fume diffusion under the pressure ventilation condition of single-end roadway. The amount of explosive in blasting is the most critical factor affecting the blasting fume diffusion of single-end roadway in plateau mines. The functional relationship between the ventilation time t and the amount of explosive m is t  = 8.397ln( m ) -9.712. The closer the ventilator is to the position of the single-end roadway, the better the fume exhaust effect is. The larger the ventilation volume, the shorter the required fume exhaust time, and the functional relationship between the ventilation time t and the wind speed v at the ventilator outlet is t = -6.502ln( v ) + 37.63. The research results of this paper provide scientific guidance for blasting ventilation of single-end roadway in plateau mine.