Design of a water curtain to reduce accumulations of float coal dust in longwall returns

International Journal of Mining Science and Technology

Michael R. Shahan¹  Clara E. Seaman²  Timothy W. Beck³  Steven E. Mischler³ 

[1] National Institute for Occupational Safety and Health, Pittsburgh Mining Research Division, Pittsburgh, PA 15236, USA;Corresponding author.;National Institute for Occupational Safety and Health, Pittsburgh Mining Research Division, Pittsburgh, PA 15236, USA;

关键词: Float coal dust;    Longwall;    Water spray;    Knockdown efficiency;    Explosion prevention;    Dust control;   

DOI  :  

来源: DOAJ

【 摘 要 】

Accumulation of float coal dust (FCD) in underground mines is an explosion hazard that affects all underground coal mine workers. While this hazard is addressed by the application of rock dust, inadequate rock dusting practices can leave miners exposed to an explosion risk. Researchers at the National Institute for Occupational Safety and Health (NIOSH) have focused on developing a water curtain that removes FCD from the airstream, thereby reducing the buildup of FCD in mine airways. In this study, the number and spacing of the active sprays in the water curtain were varied to determine the optimal configuration to obtain peak knockdown efficiency (KE) while minimizing water consumption.

【 授权许可】

Unknown