【摘要】 在大地自然温度场计算的基础上,建立了电加热集输管道大地温度场计算得物理模型和数学模型,采用有限差分法求解模型,可用以计算一年中任一天某一时刻电加热埋地管道周围土壤温度场的变化,为解决电加热保温问题、埋深问题奠定了基础。更多还原

【Abstract】 At the basis of the calculation of natural soil temperature field,mathematical and physical models of soil temperature field of gathering and transportation pipelines with electrical heating,are established and the model can be solved with the finite difference method. The model not only can be used to calculate the soil temperature variety around the buried pipelines with electrical heating at any time of some day within one year,but also builds up the foundation to solve the thermal insulation and buried depth questions of electrical heating.更多还原