Numerical Simulation and Field Measurement of Dust Concentration Distribution in Belt Conveyor Roadway

Abstract

To master the distribution law of dust mass concentration in belt conveyor roadway, as well as to gain the reasonable parameters for ventilation and dust removal design, the 40# belt conveyor drift of hoisting workshop system in Xishimen Iron Mine was chosen as the research background. Based on gas-solid two phase flow theory, the 40# belt conveyor drift was chosen as the research background,the numerical simulation in dust mass concentration in belt conveyor roadway was conducted by applying discrete phase model of computational fluid mechanics. Besides, the simulation results were demonstrated to be basically agreed with the filed measured data, by comparative analysis of them. According to the study in this paper, it was proved to be both reasonable and feasible to apply Euler-Lagrange method to simulate the distribution regularities of dust mass concentration in belt conveyor roadway. In the ventilation and dust removal design, the dust-exhausting effect was best with the wind speed of 3 m/s, at which the overall dust mass concentration remained below 3 mg/m3; while the dust mass concentration would remain lower, with the belt conveyor velocity of 2.5 m/s. Moreover, regular wall sprinkling also helped, in a degree, to reduce dust concentration.