DYNAMICS OF GAS SEEPAGE AND ITS APPLICATIONS

Dynamics of gas seepage as a borderline subject of geosciences mainly studies the flow and distribution of gas in coalseams or gas-bearing strata. In this paper new dynamic models for coal gas flow are developed. Using in-situ measured parameters of coal gas dynamics, the new models are tested with three existing dynamic models in the world. The results show that the new models approach the reality more close than the other three models.In addition, the other relations or indices helped to evaluate gas flow in coalseam are proposed.