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Mining Publication: Leakage and Performance Characteristics of Large Stoppings for Room-and-Pillar Mining
Keywords: Stoppings
Original creation date: January 1988
Authors: ED Thimons, CE Brechtel, ME Adam, JF Agapito
Report of Investigations - January 1988
CDC Stacks (Public Health Publications)
NIOSHTIC2 Number: 10005956
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9148, 1988 Jan; :1-17
This report presents a Bureau of Mines study comparing the construction costs, leakage measurements, and predicted performance of different types of large stoppings built and tested in a room-and-pillar oil-shale mine. The six full-sized structures (30 ft high by 55 ft wide) included both permanent and temporary stoppings and were fabricated using materials ranging from structural steel to coated brattice cloth. Leakage across each stopping was measured at differential pressures ranging up to 1.0 in w.g., using both the brattice window method and sulfur hexa-fluoride (SF6) tracer gas. Blast air pressures resulting from a full-scale face blast of approximately 1,800 lb of ammonium nitrate-fuel oil (ANFO) explosives were measured across two of the stoppings and the pre-and post-leakage rates were compared for all the stoppings. Overall performance of the stoppings for production applications was evaluated using an operational model of a two-panel oil-shale mine. Different combinations of temporary and permanent stoppings were evaluated based upon ventilation performance and construction and operating costs.
Report of Investigations - January 1988
CDC Stacks (Public Health Publications)
NIOSHTIC2 Number: 10005956
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9148, 1988 Jan; :1-17
See Also
Comparison of the Transverse Load Capacities of Various Block Ventilation Stoppings under Arch Loading Conditions
Development of New Protocols to Evaluate the Transverse Loading of Mine Ventilation Stoppings
Explosion Effects on Mine Ventilation Stoppings
Load and Deflection Response of Ventilation Stoppings to Longwall Abutment Loading: A Case Study
Maximizing the Ventilation of Large-Opening Mines
Practical Techniques to Improve the Air Quality in Underground Stone Mines
Technology News 500 - Using In-Place Stone Stoppings to Direct Air in Underground Stone Mines
Technology News 518 - Super Stopping: A Permanent Solid Stopping for Directing Ventilation Airflows in Large-opening Metal/Nonmetal Mines
Technology News 519 - EZ-Up Curtain Stoppings: A Practical Solution for Directing Ventilation Airflows in Large-opening Metal/Nonmetal Mines
Ventilation Planning Layouts for Large Opening Mines
Page last reviewed: February 14, 2013
Page last updated: February 14, 2013
Content source: National Institute for Occupational Safety and Health, Mining Program
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