DEEP GEOLOGICAL DISPOSAL OF HIGH-LEVEL RADIOACTIVE WASTES IN CHINA
中国高放废物深地质处置

The background,the preliminary technical strategy and the long-term plan for China's high-level radioactive waste disposal program are presented. China started research on HLW disposal in 1985,with a plan to build a national repository in the middle of the 21st Century. Beishan area,located in Northwest China's Gansu Province,is selected as the most potential area for China's HLW repository. During 1999–2004,preliminary site characterization evaluation has been performed,including surface geological,hydrogeological and geophysical investigation,and drilling of 4 boreholes (BS01,BS02,BS03,BS04) and in-situ tests in boreholes. Favorite results have been obtained from the site characterization campaign. Progresses are also made in studies on buffer/backfill materials,radionuclide migration and natural analogue.