胶带输送巷道粉尘浓度分布的数值模拟及实验研究

为了改善胶带输送巷道粉尘浓度超标的现状,探索影响粉尘浓度分布的主要因素,根据相似原理,结合气固两相流的运动方程,导出了模拟胶带输送巷道粉尘运动的相似准则数,建立了胶带输送巷道相似模型,运用计算流体力学的Fluent软件对胶带输送巷道相似模型粉尘浓度分布进行数值模拟,并与相似实验数据对比分析,模拟结果与实验数据基本吻合.研究结果表明,巷道平均风速及胶带运行速度是影响粉尘浓度分布的两大主要因素.巷道平均风速为0.15~0.60m·s-1时,风速越大,粉尘浓度越低.胶带运行速度为1~2.5m·s-1时,运行速度越大,粉尘浓度越高.

Numerical Simulation and Experimental Research on Dust Concentration Distribution in Belt Conveyer Roadway

In order to improve the current situation of dust concentration exceeding the limits in belt conveyer roadway,to explore the main influencing factors of dust concentration distribution, according to the similarity theory and the gas-solid two-phase flow equation motion, a similarity model device was designed for the specific situation in belt conveyer roadway. Fluent, which is a software of computational fluid dynamics, was used to analyze the dust concentration distribution in belt conveyor roadway of the similar model. Compared with similar experiment data analysis, the simulation result was consistent with the experimental data. The results show that the average wind speed in the roadway and the speed of the belt are the two main factors affecting the dust concentration distribution. When the average wind speed of the roadway is 0.15 m·s-1 ~ 0.60 m·s-1, the greater the wind speed, the lower the dust concentration. When the Tape speed is 1~ 2.5 m·s-1, the greater the speed, the higher the dust concentration.