众所周知,采掘现场含尘空气中粉尘浓度的高低与产尘的方式、产尘的物理条件、产尘环境的气象条件等因素有关,特别是近年来对粉尘粒子理化性质和在此条件下运动轨迹的不断认识,所以在某一尘云内粉尘浓度的变化都不能只用某一固定静止的数量概念来表示,而是一个在受多种因素互为干扰不断变化的一条动态函数曲线,如图1所示。 As we all know, the level of dust concentration in dusty air at the mining site is related to the way dust is produced, the physical conditions of dust generation and the meteorological conditions of the dust producing environment. Especially in recent years, the physical and chemical properties of dust particles and the trajectories Therefore, the change of dust concentration in a dust cloud can not be expressed by a fixed quantity concept, but a dynamic function curve that is constantly changing by a variety of factors, as shown in the figure 1 shown.