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Mining Publication: Using Ultrasonic Anemometers to Evaluate Factors Affecting Face Ventilation Effectiveness

NOTE: This page is archived for historical purposes and is no longer being maintained or updated.

Original creation date: February 2005

Image of publication Using Ultrasonic Anemometers to Evaluate Factors Affecting Face Ventilation Effectiveness

A test system was developed for measuring airflow in the NIOSH Pittsburgh Research Laboratory's ventilation test gallery using a three-axis ultrasonic anemometer. The gallery was used to simulate face airflow conditions in underground mines having a blowing curtain. Airflow data collected at multiple sampling locations between the face and the end of the curtain were used to draw airflow profiles for different curtain setback distances, intake flow quantities, and entry widths. In addition, methane was released at the face, measured at the sampling locations, and displayed as methane distribution in the areas between the curtain and the face. Entry geometry had a significant effect on airflow patterns, and the flow patterns affected the distribution of methane in the entry. Flow measured at and parallel to the face was a good predictor of methane dilution and removal within 2 ft of the face.

Authors: CD Taylor, RJ Timko, ED Thimons, T Mal

Conference Paper - February 2005

NIOSHTIC2 Number: 20026391

2005 SME Annual Meeting, February 28 - March 2, Salt Lake City, Utah, preprint 05-80. Littleton, CO, Society for Mining, Metallurgy, and Exploration, Inc., 2005 Feb; :1-7


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