为了与地下在放射性的核种的迁居上考虑温度和压力地的影响,流水运动,为联合 thermo-hydro-mechanical ( THM )的分析的女性的代码处理在的一个 elastoplastic 模型和 2D 解决温度域通过介绍过滤和移植方程浸透了,不饱和的多孔的媒介被扩大并且改善以便代码能被用于,流动地,同时强调域和核种集中地。一个假想原子浪费仓库的近的地里的温度,毛孔压力和核种集中的状态被调查。一半的影响核种集中的时间的变化上的放射性的核种的生活就联合的 thermo-hydro-mechanical-migratory 而言被分析。结果显示出那,在使成玻璃的浪费的边界,有一半的放射性的核种的集中 10 的生活一在升起的一个时期以后的下降,与 0.182 的最大的价值, mol/m3 和最小在计算的结束 0.181 珍视 mol/m3。为一半生活 1 000 一,放射性的核种的集中总是在计算时期期间随时间的增加增加;并且最大的价值是在计算的结束的 1.686 mol/m3。因此在联合的 THM 的条件下面,有更短的一半的放射性的核种的集中生活将与水更快速减少流动;要不是有更长的一半的放射性的核种生活,它的集中将很长时间在高水平放在移植进程。
In order to consider the influence of temperature and underground water movement, an elastoplastic model and a 2D FEM stress fields on the migration of radioactive nuclide with code for analysis of coupled thermo-hydro-mechanical (THM) processes in saturated and unsaturated porous media were extended and improved through introducing the percolation and migration equation, so that the code can be used for solving the temperature field, flow field, stress field and nuclide concentration field simultaneously. The states of temperatures, pore pressures and nuclide concentrations in the near field of a hypothetical nuclear waste repository were investigated. The influence of the half life of the radioactive nuclide on the temporal change of nuclide concentration was analyzed considering the thermo-hydro-mechanical-migratory coupling. The results show that, at the boundary of the vitrified waste, the concentration of radioactive nuclide with a half life of 10 a falls after a period of rising, with the maximum value of 0.182 mol/m3 and the minimum value of 0.181 mol/m^3 at the end of computation. For a half life of 1 000 a, the concentration of radioactive nuclide always increases with the increase of the time during the computation period; and the maximum value is 1.686 mol/m^3 at the end of the computation. Therefore, under the condition of THM coupling, the concentration of radioactive nuclide with a shorter half life will decrease more quickly with water flow; but for the radioactive nuclide with a longer half life, its concentration will keep at a higher level for a longer time in the migration process.