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.%介绍了中国高放废物地质处置计划的背景、初步技术战略和长远规划.中国的高放废物地质处置研究始于1985年,计划于21世纪中叶建成国家高放废物处置库.位于我国西北甘肃省的北山地区被选为最有远景的处置库预选区.1999～2004期间,在该区开展了初步的场址特性评价研究,包括地表地质、水文地质和地球物理调查、4口钻孔(北山1#,2#,3#及4#孔)的施工及钻孔现场试验,并获得了大量成果.在缓冲回填材料、放射性核素迁移以及天然类比等方面也取得了进展.
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