Methane migration characteristics of the Pocahontas No. 3 coalbeds.
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 7649, 1972 Jan; :1-19
Methane-flow and pressure data taken from a mine in the Pocahontas No. 3 Coalbed are compared with flow rates from lump coal obtained in laboratory experiments. From this, it is concluded that the main source of gas is the intact coalbed rather than a "crushed zone" near the working face. The permeability and sorption capacity of the intact coalbed are calculated and gas emission rates are theoretically accounted for.
Mining-industry; Methane-control; Methane-drainage; Underground-mining; Coal-mining; Mine-ventilation; Mine-gases; Methanes; Explosive-gases; Explosive-atmospheres; Control-technology; Engineering-controls; Explosion-prevention; Explosive-hazards
IH; Report of Investigations
NTIS Accession No.
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 7649