对冷热原油交替输送管道热力问题进行了理论分析，考虑到问题的复杂性，对问题进行了适当的简化处理，建立了埋地管道周围土壤温度场计算的数学模型，采用三角形单元网格进行数值计算。通过计算实例重点分析了土壤导热系数对土壤温度场的影响规律，导热系数对管道周围土壤温度分布影响很大，对其具体数值的确定须慎重。%The heat transfer problem about the batching transportation pipeline of cold and hot crude oil was theoretically analyzed. Considering the complexity of the problem, a simplified treatment of the problem was carried out, and the mathematical model of soil temperature field around the buried pipeline was established. Then the numerical calculation based on the mesh generation of triangle element was carried out. The influence law of soil thermal conductivity on soil temperature field was mainly analyzed through the practical calculation. The results show that the soil thermal conductivity has large influence on the soil temperature field, so it should be cautiously determined.
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