随着现代红外技术的不断成熟和日臻完善，直埋热管道面临的红外侦察监视和制导**的威胁日益增大，为此必须加强直埋热管道的热红外伪装技术研究。本文利用传热学原理，通过建立直埋热管道温度的数值模型，分析了管道埋深、冷热流体混合和包覆保温材料等措施对热红外伪装效果的影响，分析结果对直埋热管道的热红外伪装设计具有重要的参考价值。

The threats of infrared reconnaissance, surveillance, and guidance weapons to directly buried heat pipelines are increasing with the development of modern infrared technology. Therefore, it is necessary to conduct extensive research on thermal infrared camouflage technology for directly buried heat pipelines. Based on the principle of heat transfer, this paper establishes a numerical model of the temperature of the directly buried heat pipe and analyzes the influence of the buried depth of the pipe, the mixing of cold and hot fluids, and the coating of thermal insulation materials on the thermal infrared camouflage effect. The analysis results provide an important reference for the thermal infrared camouflage design of the directly buried heat pipe.