Dust concentration from driving aspect to blowing holeis from high to low and presents vertical distribution.Pellet in laying blowpipe section presents horizontal distribution.
英
美
- 纵向分布呈现掘进面至送风口浓度曲线由高渐低,风管铺设段呈水平分布,提示风管铺设段隧道内污染物排出顺利。