亀裂性岩盤における透水-変形連成挙動に関する研究

抄録

In Japan, it is planned to dispose high-level radioactive waste and TRU waste in a stable rock mass. As for the HLW problems, it is necessary to ensure that residual radioactive substances are kept from reaching the biosphere after many thousands of years. Thus the mathematical model by which not only mechanical but also hydraulic behaviors can be predicted for a long-term is of prime importance. The mechanical and hydraulic properties of discontinuous rock mass have strong correlations respectively. In this study, a creep test with associated to the coupled behaviors is conducted with the use of an artificial specimen so as to seize the mechanism of the mechanical and hydraulic behaviors. Moreover, the numerical analysis by which the coupled behavior in the creep test is reproduced is carried on, and the numerical result has modestly good accordance with the measured data. From the comparison of the experiment and the analysis, the mechanism of coupled behavior is discussed.