摘要
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 model that reproduces the coupled deformation and two-phase flow（with special interest to gas migration） through a waste containment engineered barrier system has been developed. The simulation presented in this paper is novel because variable permeability interfaces that depend on deformation are introduced to model the contacts between backfill materials and solid rock or concrete structures. Calculated results of pressures, stresses and volumetric water contents are compared with measurements showing an encouraging agreement which permits to conclude that the model is quite accurate in representing the actual processes that take place in a large-scale in-situ test.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2006年第4期693-708,共16页
Chinese Journal of Rock Mechanics and Engineering
关键词
高放废物
含砂膨润士
废物处理
气体迁移
原位试验
本构模型
反分析
high-level radioactive waste（HLW）
sand bentonite
waste disposal
gas migration
in-situ test
constitutive model
back analysis
