变形多孔介质温度–渗流–应力完全耦合模型及有限元分析

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Abstract With the application of continuum mechanics and mixture theory，a coupled mathematical model and governing equations of full coupled relation between temperature，seepage and stress fields for porous media are established. The solution process for coupled problem of three fields is studied by using finite element method and the corresponding computer code is developed with MATLAB with the ABAQUS solver. A typical example of application is presented to verify the validity of the code. Then，the coupled process of wellbore is studied and the influence laws of pore pressure，temperature and stress are discussed between different coupled fields. The results show that the coupled processes have significant effects on wellbore stability. The presented method can provide references for the influence of multi-field coupling on geological environment and coupled thermal-hydraulic- mechanical-chemical process analysis of underground engineering.

Key words： fluid mechanics coupled thermal-hydraulic-mechanical model deformation porous media finite elements ABAQUS wellbore stability

Received: 11 April 2012

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https://rockmech.whrsm.ac.cn/EN/Y2012/V31/Is2/3547

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