Determination of velocity correction factors for real-time air velocity monitoring in underground mines
Lihong Zhou
Liming Yuan
Rick Thomas
Anthony Iannacchione
摘要：When there are installations of air velocity sensors in the mining industry for real-time airflow monitoring,a problem exists with how the monitored air velocity at a fixed location corresponds to the average air velocity,which is used to determine the volume flow rate of air in an entry with the cross-sectional area.Correction factors have been practically employed to convert a measured centerline air velocity to the average air velocity.However,studies on the recommended correction factors of the sensor-measured air velocity to the average air velocity at cross sections are still lacking.A comprehensive airflow measurement was made at the Safety Research Coal Mine,Bruceton,PA,using three measuring methods including single-point reading,moving traverse,and fixed-point traverse.The air velocity distribution at each measuring station was analyzed using an air velocity contour map generated with Surfer(R).The correction factors at each measuring station for both the centerline and the sensor location were calculated and are discussed.
机标关键词：
论文发表日期：2017-01-01
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：11( 322-332 )
英文信息