Leakage and performance characteristics of large stoppings for room-and-pillar mining. Report of Investigations/1988

Technical Report · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6880872

Thimons, E D; Brechtel, C E; Adam, M E; Agapito, J F.T.

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 were compared. 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 hexafluoride tracer gas. Blast air pressures resulting from 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.

• Research Organization: Bureau of Mines, Pittsburgh, PA (USA). Pittsburgh Research Center
• OSTI ID: 6880872
• Report Number(s): PB-88-229893/XAB; BM-RI-9148
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012031 -- Coal
Lignite
& Peat-- Underground Mining-- Strata Mechanics & Control-- (1987-)
04 OIL SHALES AND TAR SANDS
040300* -- Oil Shales & Tar Sands-- Drilling
Fracturing & Mining
COAL MINING
ENGINEERING
LOST CIRCULATION
MINING
MINING ENGINEERING
OIL SHALE MINING
ROOM AND PILLAR MINING
UNDERGROUND MINING