摘要
传统岩体工程质量评价方法仅考虑了地下工程的可建造性要求,未考虑放射性废物处置工程对岩体长期安全性需求,在高放废物处置领域的应用具有明显局限性。基于国际上广泛应用的Q岩体工程质量分级法,通过引入影响处置工程长期安全的围岩特性因子,首次建立定量的高放废物处置岩体适宜性评价方法体系Q_(HLW)。其中,岩体断裂带分布、地下水化学特性、温度影响、岩体渗透性能等特性对处置工程长期安全性影响得到了系统的考虑。与传统方法相比,Q_(HLW)方法能够系统反应处置库工程长期稳定性和安全性需求,可为处置库候选场址适宜性评价和工程优化布置提供有效的理论支撑。采用该方法,基于场址特性评价基础数据,对从我国甘肃北山、新疆、内蒙古三大预选区筛选出的9个地下实验室候选场址适宜性进行综合评价研究,确定各候选场址的适宜性指标。评价结果表明,新场、沙枣园、算井子、雅满苏及诺日公候选场址均可认为是高放废物处置地下实验室适宜场址,以北山预选区新场场址适宜性最高。
In this paper,a new system of rock suitability classification named QHLW is introduced to evaluate the suitability of the host rock for high-level radioactive waste（HLW） disposal at different scales. The system is developed on the basis of Q-system,and considers both the long-term safety and constructability requirements of the host rock for disposal. Some additional parameters,including the fracture zone distribution,groundwater chemistry and thermal effect are also taken into account in light of their significant influence on the long-term safety of HLW disposal. In the QHLW system,the suitability of host rock is classified into three classes at the repository and tunnel scales. The suitability of nine potential sites of underground research laboratory（URL） for HLW disposal located in Beishan,Xinjiang and Inner Mongolia regions are evaluated with this classification system. The Xinchang site in Beishan region is classified as the most suitable URL site according to the results of analysis.
作者
陈亮
王驹
刘健
刘亦亨
CHEN Liang;WANG Ju;LIU Jian;LIU Yiheng(CNNC Key Laboratory on Geological Disposal for High-level Radioactive Waste, Beijing Researeh Institute of Uranium Geology, Beijing 100029, China)
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2018年第6期1385-1394,共10页
Chinese Journal of Rock Mechanics and Engineering
关键词
岩石力学
高放废物处置
岩体适宜性评价
地下实验室选址
新场场址
rock mechanics
high-level radioactive waste disposal
rock suitability classification
site selection of underground research laboratory
Xinchang site
