Laplace Boundary Element Model for the Thermoelastic Consolidation of Multilayered Media
Laplace Boundary Element Model for the Thermoelastic Consolidation of Multilayered Media
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DOI：
10.1061/(asce)1532-3641(2006)6:2(136
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发表时间：
2006-03
影响因子：
3.7
通讯作者：
A. El-Zein
中科院分区：
文献类型：
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作者：
A. El-Zein
提出了一种求解多层介质热弹性固结全耦合方程的边界元方法。温度、热流、孔压、水力通量、位移和牵引力等条件在层间交界面处强制存在。此外，文中还给出了在两种有效的拉普拉斯逆方法中进行最优选择的准则，大大减少了计算时间。通过对埋藏在花岗岩中的工程粘土隧道中腐烂的放射性废物库的分析，说明了该方法的改进范围和数值效率。粘土和花岗岩之间的水力传导性差异被发现使某些地方的孔压增加了5倍。
A boundary-element method for solving the fully coupled equations of thermoelastic consolidation is developed for multilayered media. Conditions of temperature, heat flux, pore pressure, hydraulic flux, displacement, and traction are enforced at the interface between layers. In addition, a criterion for making an optimal choice between two efficient Laplace inversion schemes is developed, significantly reducing computation time. The improved scope and numerical efficiency of the method are illustrated by applying it to the analysis of a decaying radioactive waste repository buried in an engineered clay tunnel, itself embedded in granite. The difference in hydraulic conductivity between clay and granite is found to increase the buildup of pore pressure by a factor of 5 in some places.