Advances in study on coal gas seepage mechanics

Abstract：It has describesd the present state for study of seepage mechanics of coal gas both at home and abroad and summarized the progress in the study of coal gas seepage mechanics in China in recent years. It has put forward the further research direction and the development tendency of this field.It is considered that the establishment and development of the gas leakage interaction coupled for solid and gas model and its numerical method have the magnificance and reality meaings for the imprvement of the gas seepage mechanics.

Keyword：coalseam gas; seepage mechanics; interaction coupled for solid and gas; numerical simulations; research advances;