Study of dynamic models for coal gas dynamics (part 2)

Abstract

Coal gas dynamics is a fundamental theory for controlling gas in coal mines and preventing catastrophe. Starting from Darcy's law and the equation of continuity, a number of fundamental problems of coal gas dynamics are analysed using the theory of dimensional analysis and the current models for gas flow fields in coal seams are corrected. The mathematical solutions for three kinds of models of gas flow fields are studied and developed and the rationality of the new linear dynamic models is proven.