Investigation and suitability study of pre-selected sites for geological disposal of high level radioactive waste
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摘要: 本项研究从高放废物安全处置的需求出发,针对我国高放废物处置库首选预选区(北山预选区)内算井子预选地段,综合运用地质—地球物理—水文地质—地球化学等研究方法获得了地质、水文地质、未来自然变化、地球化学、建造与工程、环境保护和社会经济等方面的数据和资料,评价了预选地段岩体的安全性;从工程建造和工程安全等角度论证了预选岩体的可建造性;确认了预选岩体在运输条件、土地利用、社会经济与人文等方面的可接受性。在此基础上,建立了较为完善的处置库预选地段调查与适宜性综合分析方法,并通过地段适宜性综合分析和地段内场址圈定及其安全性综合对比,在算井子地段中筛选出1个花岗岩处置库候选场址。研究成果将直接服务于我国高放废物地质处置库场址筛选和场址特性评价,对保障我国核废物安全管理和核能可持续发展具有重要的现实意义。Abstract:
Based on the requirement of safe disposal of high-level radioactive waste, this study aims at the pre-selection area of the preferred pre-selection area of China's high-level radioactive waste disposal bank (Beishan pre-selection area). The data and materials of geology, hydrogeology, future natural change, geochemistry, construction and engineering, environmental protection and social economy were obtained by using the methods of geology, geophysics, hydrogeology and geochemistry. The constructability of preselected rock mass is demonstrated from the perspectives of engineering construction and engineering safety. The acceptability of the preselected rock mass in transport condition, land use, social economy and humanity was confirmed. On this basis, a relatively perfect site investigation and suitability comprehensive analysis method for the disposal warehouse is established, and a candidate site for the granite disposal warehouse is selected from the computational sub-section through the comprehensive analysis of site suitability and the comprehensive comparison of site identification and safety in the lot. The research results will directly serve the site screening and site characteristics evaluation of China's high-level radioactive waste geological disposal repository, and have important practical significance to ensure the safe management of nuclear waste and the sustainable development of nuclear energy in China.
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