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Using ultrasonic anemometers to evaluate factors affecting face ventilation effectiveness.

Authors
Taylor-CD; Timko-RJ; Thimons-ED; Mal-T
Source
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
NIOSHTIC No.
20026391
Abstract
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.
Keywords
Ventilation; Underground-mining; Coal-mining; Methanes; Airflow; Anemometry; Mining-industry
Contact
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
CAS No.
74-82-8
Publication Date
20050228
Document Type
Conference/Symposia Proceedings
Fiscal Year
2005
NTIS Accession No.
NTIS Price
NIOSH Division
PRL
Priority Area
Research Tools and Approaches: Control Technology and Personal Protective Equipment
Source Name
2005 SME Annual Meeting, February 28 - March 2, Salt Lake City, Utah, Preprint 05-80
State
PA
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