Analysis on Coal Gas Adsorption and Permeability Model under Heat Injection Condition
JIA Quanmin
SUN Haitao
JIANG Wangang
GUO Heng
Abstract：In this paper,study was carried out on the adsorption and desorption laws of coal gas and the change laws of coal permeability under the condition of heat injection in order to analyze the influence of heat injection in coal seam on the coal gas output . Based on the assumptions of Langmuir model and Warren-Root geometric model and by combining the elasticity mechanics with the fluid mechanics,the coal gas adsorption model and coal permeability model were established and then analyzed. Finally, the influence of temperature and moisture on the gas adsorption and permeability of coal was obtained under the condition of heat injection,this thus laid the foundation for the analysis and solution of the coal seam heat injection multi-physics coupling model.
Keywords：coalheat injectionabsorptionpermeabilitymulti-physics coupling
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 73-75,79 )