高放废料地质处置中多场耦合作用下的岩石 破裂问题

 综述岩石力学中热–水–力耦合模型的研究进展，认为在热–水–力耦合作用下的岩石(岩体)破裂过程演化将直接影响高放射性废料地质处置库周围围岩的热力学特性、渗流特性和力学稳定性，进而影响高放射性核素在围岩中的迁移规律。通过建立一种描述热–水–力耦合条件下岩石破裂演化过程的细观力学模型，来揭示热–水–力耦合条件下宏观岩体结构破坏行为。计算分析结果表明，这种模型对于高放废料地质处置的可靠性分析具有重要的科学价值及现实意义。

ROCK FAILURE ISSUES IN GEOLOGICAL DISPOSAL OF HIGH-LEVEL RADIOACTIVE WASTES UNDER MULTI-FIELD COUPLING FUNCTION

The research progress in thermal-hydraulic-mechanical(THM) coupling model in rock mechanics is summarized. The rock(rock mass) failure process under the thermal-hydraulic-mechanical coupling function will directly affect the thermodynamic characteristic，the seepage characteristic and mechanical stability of surrounding rock around high-level radioactive wastes geological disposal repository，further affect the migration rules of high-level radioactive nuclide in surrounding rock. The macroscopical behavior of rock structure failure is modeled by building a model which describes the rock(rock mass) failure process under the thermal-hydraulic- mechanical coupling function. The analysis results show that this method has important scientific values and practical significances for the reliability of high-level radioactive wastes disposal.