The temperature distribution is an important issue for the design and safety assessment of the repository for disposing high-level radioactive nuclear waste (HLRW). In order to analyze the heat conduction property near the HLRW canister accurately, the solution of temperature distribution is divided into two parts. Two mathematical models were established respectively, and the corresponding analytical solutions were obtained in terms of the heat conduction equations in the buffer layer and surrounding rock. Then, by the superposition method, the solution of total temperature is obtained and verified by checking against the existing ones for a special case in the literature. Finally, a parametric study is performed to investigate the temperature performance in the buffer layer and surrounding rock with different parameters.

温度分布是高放核废料处置库（HLRW）设计和安全评估的重要问题。为了准确分析HLRW罐附近的热传导特性，将温度分布求解分为两部分。分别建立了两个数学模型，并根据缓冲层和围岩的热传导方程得到了相应的解析解。然后，通过叠加方法，得到总温度的解，并通过与文献中已有的特例进行核对进行验证。最后，进行参数研究以研究不同参数下缓冲层和围岩的温度性能。