| CO2吸附对煤岩热弹性模型影响的理论解释 |
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| 引用本文： | 白冰,李小春,刘延锋,方志明,张勇.CO2吸附对煤岩热弹性模型影响的理论解释[J].岩土力学,2006,27(11):1974-1976. |
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| 作者姓名： | 白冰 李小春 刘延锋 方志明 张勇 |
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| 作者单位： | 中国科学院武汉岩土力学研究所,武汉,430071 |
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| 摘 要： | 引入煤岩对气体的吸附势函数，并假定吸附势函数是引起多孔介质变形和应力的一个因素，给出了考虑CO2吸附的煤岩热弹性模型的一般形式，分析了CO2吸附对煤岩热弹性模型的影响。结果表明，在弹性范围内，吸附势函数是通过改变热传导方程和热传导的热力学限制条件来间接影响介质的应力和变形的。而对应力一应变之间的关系表达式的形式没有影响。一旦给出自由能函数和吸附势函数的形式，就可以确定考虑气体吸附条件下介质的热弹性本构模型。
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| 关 键 词： | CO2吸附 热弹性模型 吸附势 膨胀 |
| 文章编号： | 1000-7598-（2006）11-1974-04 |
| 收稿时间： | 2005-08-22 |
| 修稿时间： | 2005-08-222005-12-08 |
A theoretical explanation for influence of CO2 adsorption on thermoelastic model of coal-rock |
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| BAI Bing,LI Xiao-chun,LIU Yan-feng,FANG Zhi-ming,ZHANG Yong.A theoretical explanation for influence of CO2 adsorption on thermoelastic model of coal-rock[J].Rock and Soil Mechanics,2006,27(11):1974-1976. |
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| Authors: | BAI Bing LI Xiao-chun LIU Yan-feng FANG Zhi-ming ZHANG Yong |
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| Institution: | Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China |
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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. |
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| Keywords: | CO2 adsorption thermoelastic model adsorption potential swelling |
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