建立了高放废物工程屏障体系变形与二相流(偏重于气体迁移)的耦合模型。同时,介绍模型的创新点,在于引入了由变形有关的可变渗透性界面来模拟回填材料和坚硬岩石或混凝土结构之间的关系。压力、应力和体积含水量的计算结果与实测值的对比较吻合。研究结果表明:此模型可精确描述在大规模现场试验中的真实过程。 A coupled model of deformation and phase flow (emphasis on gas migration) of high-level radioactive waste project barrier system was established. At the same time, the innovation of the model is introduced by introducing a deformation-dependent variable permeability interface to simulate the relationship between backfill materials and hard rock or concrete structures. The calculated results of pressure, stress and volumetric water content are in good agreement with the measured values. The results show that this model can accurately describe the real process in large-scale field experiments.