Application of SF6 Tracer Gas in Study of Methane Dispersion Regularity in Gob Area

摘要

The disallowed gas concentration in the goaf, which is not only influencing the sustainability, stability and security of the mines, but as the primary cause of the accidents, is a universe phenomenon in so many high gas mines in China. This paper mainly introduces the technology of probing gas dispersion regularity in the goaf through releasing SF6 tracer gas, and analyzes its applied method and results through an example. Proved by application, the technology has important theoretic and practical significance to manage gas of gob area, and to ensure safety production of coal mines.