Coupled thermo-hydro-mechanical study on GMZ bentonite
In deep geological disposal for high-level radioactive waste, bentonite is a kind of ideal buffer/backfill material. Buffer and backfill materials between waste tank and the surrounding rock mass are the last artificial barrier neighbouring waste. During the operation and closure of repository, the bentonite that works as a buffer/backfill material will suffer complex coupled effects of high temperature, geo-stress, hydraulic, and chemical process, which comes from heat of the nuclear waste radiation, mechanical stress from parent rock mass and seepage action of groundwater. This mock-up test developed the methodologies for coupled test of GMZ bentonite and then we acquire some basic parameters under Thermo-Hydro-Mechanical (T-H-M) coupled conditions, which will be helpful for the future design of engineered barrier system of mock-up. The charac-terization of GMZ bentonite related to swelling pressure, relative humidity and temperature are presented and interpreted. Now the test is on going.
S.F. Cao L. Qiao Y.M. Liu J.L. Xie L.K. Ma
School of Civil and Engineering, University of Science and Technology Beijing, Beijing, China Beijing Research Institute of Uranium Geology, Beijing, China
国际会议
The 2nd ISRM International Young ScholarsSymposium on Rock Mechanics(第二届国际岩石力学青年学者研讨会)
北京
英文
593-596
2011-10-14（万方平台首次上网日期，不代表论文的发表时间）