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

作     者：Clara E.Seaman Michael R.Shahan Timothy W.Beck Steven E.Mischler Clara E.Seaman;Michael R.Shahan;Timothy W.Beck;Steven E.Mischler

作者机构：National Institute for Occupational Safety and HealthPittsburgh Mining Research DivisionPittsburghPA 15236USA 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2020年第30卷第4期

页      面：443-447页

核心收录：

学科分类：0819[工学-矿业工程] 0709[理学-地质学] 0808[工学-电气工程] 081903[工学-安全技术及工程] 08[工学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：The authors would like to thank the following people for their contributions to this work: Jason Driscoll  Andrew Mazzella  Jay Colinet  Larry Patts  and Jim Rider. 

主　　题：Float coal dust Longwall Water spray Knockdown efficiency Explosion prevention Dust control 

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.