The paper is devoted to the formulation of a mathematical model which enables analysis of coupled thermo-hydro-mechanical (THM) processes with a special focus on processes in bentonite and bentonite-based sealing barriers which are component of designs of deep geological repositories for a high-level radioactive waste including the spent nuclear fuel. Such modelling is important as the analysis of coupled THM processes in the near field is crucial for the understanding of the long-term behaviour of the barriers. The developed model uses generally available data from standard tests but attempts to incorporate special characteristics of the bentonite behaviour, let us mention the oversaturation, swelling and strong couplings of the processes. The model is implemented via COMSOL Multiphysics and validated by the simulation of THM processes which were monitored during operation of the FEBEX experiment and analysed during two dismantling phases of the experiment.

本文致力于数学模型的建立，该数学模型能够分析热-水-力耦合（THM）过程，特别侧重于膨润土和膨润土基密封屏障的过程，膨润土和深层地质储层设计的组成部分。高放射性废物，包括废核燃料。这样的建模很重要，因为在近场中耦合THM过程的分析对于了解势垒的长期行为至关重要。所开发的模型使用了标准测试中通常可获得的数据，但尝试结合膨润土性能的特殊特征，让我们提到过程的过饱和，溶胀和强耦合。