粉尘在巷道中的紊流传递分析

Analysis on Motion and Deposition of Dust Particles in Mine Tunnels

建立的粉尘在巷道中的传递方程是一个二维平流扩散输运方程。在巷道顶底板为吸收壁的条件下，导出了粉尘浓度分布函数。传统的工业沉降室沉降效率公式（横向混合模型）只是论文所列方程的一个特例。

The transfer equation for dust given in this paper is a equation of two dimensional airflow diffusion transport.Assuming that the four walls of the tunnel are dust absorption walls,a dust concentration distribution function is found.Futhermore,a deposition efficiency formula is obtained,in which the vertical mixing-plug flow model is included.To decrease the value of some parameters such as turbulence intensity,vertical diffusion and longitudinal dispersion coefficients could increase the deposition efficiency of dust particles.