Leakage and performance characteristics of large stoppings for room-and-pillar mining

Book · Fri Jan 01 00:00:00 EST 1988

OSTI ID:6518776

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

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 share 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 hexafluoride (SF/sub 6/) tracer gas. Blast air pressures resulting from a full-scale face blast of approximately 1,800 lab 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.

• OSTI ID: 6518776
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
OIL SHALE MINING
LEAK TESTING
OIL SHALES
ROOM AND PILLAR MINING
AMMONIUM NITRATES
CHEMICAL EXPLOSIVES
FUEL OILS
LEAKS
STEELS
STRUCTURAL BEAMS
SULFUR FLUORIDES
SUPPORTS
TESTING
TEXTILES
ALLOYS
AMMONIUM COMPOUNDS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
ENERGY SOURCES
EXPLOSIVES
FLUORIDES
FLUORINE COMPOUNDS
FOSSIL FUELS
FUELS
HALIDES
HALOGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
LIQUID FUELS
MATERIALS
MECHANICAL STRUCTURES
MINING
NITRATES
NITROGEN COMPOUNDS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
SULFUR COMPOUNDS
UNDERGROUND MINING
040300* - Oil Shales & Tar Sands- Drilling
Fracturing & Mining