Influence of gas adsorption on coal body
Abstract：Coal deformation with the change of gas pressure was studied during coal absorbing gas by the use of self-developed experimental device and on the basis of previous studies,the impact of gas on coal was analyzed.The results show that swelling deformation of coal occurs after coal absorbs gas.The existence of free and adsorbed gas will weaken the strength of coal,which result into coal brittleness degree increasing and make coal body more instable and coal failure speed faster.The stronger absorption of gas is,the more gas content in coal body is,the greater swelling deformation of coal occurs.When the coal is under limited conditions,the greater the swelling stress occurs,the more the coal intensity reduces.
Keywords：gasadsorptioncoal bodyswelling deformation
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)