Safe disposal of high-level waste is a challenging problem facing the scientific, technological, and engineering communities. The actual high-level waste disposal is closely related to the number of waste canisters in a single borehole. The influence of the number of waste canisters in a single borehole on the near-field temperature, stress, and displacement of the repository is directly related to the safety and cost of waste disposal. In this paper, based on the conceptual model of the high-level waste repository, the influence of the number of waste canisters in a single vertical borehole on the near-field temperature, stress, and displacement of the high-level waste repository was calculated and analyzed by using the 3DEC program. The results show that as the number of waste canisters in a single borehole increases, its heat release capacity is enhanced, and the temperature in the same area near the repository increases gradually; the temperature gradient increases gradually. The more waste canisters in a single borehole, the higher the temperature of the observation point near the same location of the repository (about 30°C), the temperature difference is getting larger and larger, and the average increase of temperature difference at observation point is about 8.1°C. The change of normal stress at the observation point is obvious when the waste canister releases heat for about 0–1 year; after that, the compressive stress decreased slightly, and then the stress and time curve was basically horizontal; the stress difference is getting larger and larger; the average increase of stress difference is about 0.0545MPa.The general trend of observation point displacement is that when the waste canister releases heat for about 0–1 year, displacement increases greatly, and then displacement increases less and presents a linear distribution trend; the displacement difference is getting larger and larger; the average increase of displacement difference is about 0.00034m. The thermal superposition effect of waste canisters added in a single borehole in engineering design cannot be ignored, and it showed that attention should be paid to the number of waste canisters in the disposal pit.

安全处置高放废物是科学，技术和工程界面临的一个挑战性问题。实际的高级废物处理与单个钻孔中废物罐的数量密切相关。单个钻孔中的废物罐数量对近场温度，应力和储存库位移的影响与废物处理的安全性和成本直接相关。本文基于高级废物处置库的概念模型，计算了单个垂直钻孔中废物罐的数量对高级废物处置库的近场温度，应力和位移的影响。并使用3DEC程序进行分析。结果表明，随着单个钻孔中废物罐数量的增加，放热能力增强，库附近同一区域的温度逐渐升高。温度梯度逐渐增加。一个钻孔中的废料罐越多，靠近储存库相同位置（约30°C）的观测点的温度越高，温度差越来越大，并且观测点的温差平均增加大约8.1°C。当废料筒放热约0-1年时，观察点的法向应力变化很明显。此后，压应力略有下降，应力与时间的曲线基本为水平。压力差越来越大；应力差的平均增加量约为0.0545MPa。观察点位移的总体趋势是，当废料罐放热约0–1年时，位移增大得很大，然后位移增加得较小，呈现线性分布趋势。位移差越来越大 平均位移差增加约0.00034m。在工程设计中，在单个钻孔中添加废料桶的热叠加效应是不容忽视的，这表明应注意处理坑中废料桶的数量。平均位移差增加约0.00034m。在工程设计中，在单个钻孔中添加废料桶的热叠加效应是不容忽视的，这表明应注意处理坑中废料桶的数量。平均位移差增加约0.00034m。在工程设计中，在单个钻孔中添加废料桶的热叠加效应是不容忽视的，这表明应注意处理坑中废料桶的数量。