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前言 自50年代初以来,许多人对矿井风流中粉尘的扩散特性作了大量研究,获得了一些实验数据,这对了解某一特定环境下的粉尘特性是有益的。但由于缺少流动速度、尘源粉尘的粒度分布、尘粒密度等参数,未能得出带普遍性的结论。而这些参数在不同矿井是不一样的,甚至于在同一矿井也不相同。本实验研究的目的是更深入地了解井下风流中尘粒的短暂空间分布情况(国家科学院,1980)。研究粉尘特性风流中全尘和呼吸性粉尘的浓度以及它们在底板上的沉降情况。
Preface Since the early 1950s, many people have done extensive research into the diffusive properties of dust in mine winds and have obtained some experimental data that are useful for understanding the characteristics of dust in a particular environment. However, due to the lack of flow rate, dust particle size distribution, dust particle density and other parameters, failed to come to universal conclusions. These parameters are not the same in different mines, even in the same mine is not the same. The purpose of this experimental study was to gain a deeper understanding of the temporal spatial distribution of dust particles in the downhole airflow (National Academy of Sciences, 1980). Studying dust concentration The concentration of dust and respiratory dust in the airflow and their settling on the floor.