With the use of atomatic energy, how to dispose radioactive wastes has become an important research subject unavoidablely. Among the countermeasures of disposing radioactive wastes,geological disposal is doubtless a s...With the use of atomatic energy, how to dispose radioactive wastes has become an important research subject unavoidablely. Among the countermeasures of disposing radioactive wastes,geological disposal is doubtless a safe and reliable method. Comparing with other methods, it keeps the wastes deep in the earth shell and far from human action areas. So it is stable in long term in essence.But earth quake often takes place in Japan while the treatment of highly radioactive and other hazardous wastes needs thousands of years or even more time. What would he the situation? This article explores the question.展开更多
In order to know the mechanism of groundwater transport and the variation of ion concentrations in the near-field of the high-level radioactive waste repository,the whole process was simulated by EOS3 module of TOUGHR...In order to know the mechanism of groundwater transport and the variation of ion concentrations in the near-field of the high-level radioactive waste repository,the whole process was simulated by EOS3 module of TOUGHREACT.Generally,the pH and cation concentrations vary obviously in the near-field saturated zone due to interaction between groundwater and bentonite.Moreover,the simulated results showed that calcite precipitation could not cause obvious variations in the porosity of media in the near-filed if the chemical components and their concentrations of groundwater and bentonite pore water are similar to those used in this study.展开更多
文摘With the use of atomatic energy, how to dispose radioactive wastes has become an important research subject unavoidablely. Among the countermeasures of disposing radioactive wastes,geological disposal is doubtless a safe and reliable method. Comparing with other methods, it keeps the wastes deep in the earth shell and far from human action areas. So it is stable in long term in essence.But earth quake often takes place in Japan while the treatment of highly radioactive and other hazardous wastes needs thousands of years or even more time. What would he the situation? This article explores the question.
文摘In order to know the mechanism of groundwater transport and the variation of ion concentrations in the near-field of the high-level radioactive waste repository,the whole process was simulated by EOS3 module of TOUGHREACT.Generally,the pH and cation concentrations vary obviously in the near-field saturated zone due to interaction between groundwater and bentonite.Moreover,the simulated results showed that calcite precipitation could not cause obvious variations in the porosity of media in the near-filed if the chemical components and their concentrations of groundwater and bentonite pore water are similar to those used in this study.
