Underground gob-gas drainage during longwall mining

Journal Article · Fri Jan 01 04:00:00 EST 1982 · Rep. Invest. - U.S., Bur. Mines; (United States)

OSTI ID:6528905

Schatzel, S J; Finfinger, G L; Cervik, J

Although gas drainage through surface boreholes has been the conventional means of methane control for US longwall gobs (mined spaces), auxiliary systems of gob-gas drainage during longwall mining will be essential for an increasing number of deep, gassy coal mines where ventilation is insufficient for adequate dilution of methane in bleeder entries. Underground gas drainage (based on European methods) as an alternative means of methane control are being developed. Cross-measure boreholes are drilled into the roof over the panel and on retreating longwalls, toward the working face from a location by the face. As the longwall retreats, an increasing portion of the hole intercepts the fracture system over the caved gob. A surface exhauster maintains a vacuum on a pipeline running parallel to the panel and draws the methane mixture out of the mine.

• Research Organization: Bureau of Mines, Washington, DC
• OSTI ID: 6528905
• Journal Information: Rep. Invest. - U.S., Bur. Mines; (United States), Journal Name: Rep. Invest. - U.S., Bur. Mines; (United States) Vol. 8644; ISSN XBMIA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000 -- Coal
Lignite
& Peat-- Mining
016000* -- Coal
Lignite
& Peat-- Health & Safety
ALKANES
COAL MINES
COAL MINING
DRAINAGE
FLUID FLOW
GAS FLOW
HYDROCARBONS
LONGWALL MINING
METHANE
MINES
MINING
ORGANIC COMPOUNDS
REMOVAL
SAFETY
UNDERGROUND FACILITIES
UNDERGROUND MINING
VENTILATION