摘要
采用经相似性实验验证的数值计算程序预测了埋地电力隧道温度随年代的变化规律。根据计算结果分析隧道深度、直径和发热量对隧道终温的影响。结果表明,发热量是影响隧道最终温度的主要因素。较小发热量的隧道可以直接利用地表散热;发热量大的隧道,须采用大直径和小深度的隧道布置。最后给出了电力隧道的优化设计分析。
A numerical model developed previously was employed to predict the temperature field of underground power transmission tunnel.The model has been confirmed to be accurate by similarity experiment.Based on the result,the effect of tunnel depth as well as its diameter and the heat output from the cable is investigated.The results show that heat power is the main factor resulting in temperature rise in tunnel.Increasing the tunnel diameter and reducing the depth can help dispersing heat though soil when heat output is great.Finally,optimum analysis was performed on the proper design of power delivery tunnel.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2010年第5期827-830,共4页
Journal of Engineering Thermophysics
关键词
埋地电力隧道
隧道温度
数值计算
土壤温度场
优化分析
underground power transmission tunnel
tunnel temperature
numerical computation
soil temperature field
optimum analysis
