›› 2006, Vol. 27 ›› Issue (11): 1974-1976.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

A theoretical explanation for influence of CO2 adsorption on thermoelastic model of coal-rock

BAI Bing, LI Xiao-chun, LIU Yan-feng, ZHANG Yong   

  1. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2005-08-22 Online:2006-11-10 Published:2013-12-04

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Abstract: An adsorption potential function produced by the interaction between gas and solid skelecton is introduced and regarded as a factor for the stress and deformation of the solid skeleton especially for the swelling of the coal. A general form of the thermoelastic constitutive model of coal is given considering the adsorption of CO2. After the thermodynamic analysis of the constitutive relation, it is found that the adsorption potential affects the stress and deformation indirectly through remodeling the form of the heat transfer equation and changing the thermodynamic restriction condition. But it doesn’t change the form of stress-strain relation. A constitutive model can be built the moment that the free energy function and adsorption potential are given.

Key words: CO2 adsorption, thermoelastic model, adsorption potential, swelling

CLC Number: 

  • TD 841
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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