【摘要】 埋地管道因其具有受地形地物限制因素少、安全密闭、能长期稳定运行等优点,在管道工程中得到广泛的应用。预测埋地管道周围温度场对管道的建设至关重要,数值计算是预测埋地管道周围温度场的有效手段。文中以国内广泛分布的冻土为背景,对不同气候条件下的管道周围土壤温度场进行研究,并用有限差分法对冬夏的土壤进行了数值模拟计算。结果表明:不同季节输油后土壤温度场趋于稳定的时间有所不同,油品的散热量也存在较大差异。更多还原

【Abstract】 Underground pipelines get the very widespread application in pipeline engineering because they are safe and closed,have fewer limited factors of land figuration and ground objects,and can be stabilized to circulate over a long period of time.It is important for the construction of pipelines to predict the relationship between both the temperature field and the moisture field around the buried pipelines.In this paper,it study the soil temperature field around the pipeline under different weather conditions by taking the permafrost earth widely distributed in China as the background and conduct numerical simulations of the soil in winter and summer with a finite difference method.The results show that in different seasons after transport of oil,the time of soil the temperature field tends to stability is different and that there also exists much difference in the oil heat dissipating capacity in different seasons.更多还原