The influence of the type of pore fluid in two-phase media on the form of consolidation equations

摘要

In this paper various approaches to a modeling medium consisting of an elastic skeleton with gas-filled pores are presented. Classic equations of the poroelasticity model by Biot are cited, with the modifications considering the presence of not only liquid, but also gas in the pores of the medium. Apart from the isothermal models, models including temperature changes and the resulting changes of effective parameters of porous medium are presented. This model can be used in modeling phenomena in soil during underground coal gasification, where as a result of high temperatures water undergoes a phase transition into water vapor.