高放废物处置巷道尺度岩体适宜性评价  

Tunnel-scale evaluation of rock mass suitability for the disposal of high-level radioactive waste

作　　者：叶勇 陈亮[1,2] 刘健 YE Yong;CHEN Liang;LIU Jian(Beijing Research Institute of Uranium Geology,Beijing 100029,China;CAEA Innovation Center for Geological Disposal of High-Level Radioactive Waste,Beijing 100029,China)

机构地区：[1]核工业北京地质研究院,北京100029 [2]国家原子能机构高放废物地质处置创新中心,北京100029

出　　处：《物探与化探》2024年第6期1545-1552,共8页Geophysical and Geochemical Exploration

基　　金：国防科工局核设施退役与放射性废物治理专项(科工二司[2020]基础科研计划(JCKY2020201C003))。

摘　　要：岩体适宜性评价是高放废物处置库选址和设计的核心内容之一,以判断场址岩体是否满足处置库长期包容和隔离核素的功能要求。在已提出的场址尺度Q_(HLW)岩体适宜性评价方法的基础上,本文进一步发展了处置巷道尺度岩体适宜评价准则,建立了“预评价+最终评价”两阶段的评价体系。同时,结合芬兰高放废物处置ONKALO地下实验室场址示范巷道1(DT1)揭露的地质水文信息,对处置巷道尺度两个阶段的评级标准体系进行测试和验证。对比分析优化Q_(HLW)获得的适宜性评价结果与芬兰RSC岩体适宜性评价方法定性评价结果,发现两种方法得出的评价结果基本一致,验证了处置巷道尺度岩体适宜性评价方法的可行性。Rock mass suitability evaluation is a core part of the siting and design of a disposal repository for high-level radioactive waste,aiming to determine whether the rock masses at the site meet the functional requirements for long-term containment and radionuclides isolation.Based on the previously proposed site-scale evaluation method(Q_(HLW))of rock mass suitability,this study further developed criteria for the tunnel-scale evaluation of rock mass suitability and established a two-phase evaluation system consisting of pre-evaluation and final evaluation.Additionally,in combination with geological and hydrological data revealed by demonstration tunnel 1(DT1)at the site of the ONKALO underground research laboratory in Finland,this study tested and verified the criteria of the two-phase evaluation system on the disposal tunnel scale.The comparison between the suitability evaluation results obtained using the optimized Q_(HLW) and the qualitative evaluation results determined using the rock suitability classification(RSC)rock mass grading method indicates that both methods yielded roughly consistent results.This confirms the feasibility of the tunnel-scale evaluation method of rock mass suitability.

关 键 词：高放废物地质处置 岩体适宜性评价 处置巷道尺度 

分 类 号：P587[天文地球—岩石学] P597.3[天文地球—地质学]