湖南大学学报（自然科学版）2016，Vol.43Issue(11)：154-160,7.
基于正交试验的寒区隧道温度场影响因素敏感度研究∗
Sensitivity Analysis of Influencing Parameters on Tunnel Temperature Field by Orthogonal Test Technique
摘要
Abstract
Many factors affect the tunnel temperature field in cold region.An unsteady heat transfer calculation model was established based on finite difference method.Taking the Nan Shan railway tunnel in cold region as an example,the othogonal test method,which takes the average temperature of tunnel lin-ing internal nodes,lining temperature of a certain section,and longitudinal frozen length of tunnel en-trance as index,respectively,is applied to carry out sensitivity study of the influencing factors on tunnel temperature field.The results show that there are some local differences in the ranging of sensitivity of each factor under different indexs.Overall,the tunnel depth,wind direction in tunnel,tunnel section size, wind speed in tunnel,wind temperature of entrance,and thermal conductivity coefficient of surrounding rock are the main factors affecting the tunnel temperature field,while the surrounding rock density and specific heat of surrounding rock are the secondary factors affecting tunnel temperature field.In the anti-freezing design of the tunnel in cold region,except the unchanged factors such as the surrounding rock density,surrounding rock specific heat,surrounding rock heat transfer coefficient,thermal conductivity of surrounding rock,and wind temperature of tunnel entrance,sufficient attention should be paid on the de-sign parameters that affect significantly the tunnel temperature field including the tunnel depth,wind di-rection in tunnel,wind speed in tunnel,and tunnel section size.关键词
寒区铁路隧道/温度场/正交试验/敏感度分析Key words
railway tunnel in cold region/temperature field/orthogonal test/sensitivity analysis分类
建筑与水利引用本文复制引用
周小涵,曾艳华,范磊,周晓军,阮亮红,魏英杰..基于正交试验的寒区隧道温度场影响因素敏感度研究∗[J].湖南大学学报（自然科学版）,2016,43(11):154-160,7.基金项目
国家自然科学基金资助项目(51278426),National Natural Science Foundation of China(51278426) （51278426）
