北京交通大学学报2017，Vol.41Issue(1)：49-55,7.DOI:10.11860/j.issn.1673-0291.2017.01.008
寒区长大隧道温度实测与仿真
Temperature measurement and simulation of long tunnel in cold region
摘要
Abstract
The change rules of temperature field of long tunnel in cold region is analyzed based on measured data,and the change rules of temperature field,frozen depth of tunnel and the application scope of thermal insulation layer under different ambient temperatures,original ground temperatures of surrounding,natural wind speeds,train running speeds and train running frequencies are studied based on numerical analysis.The results show that the tunnel may appear negative temperature distribution in cases that the ambient temperature or the original ground temperature of surrounding rock is low,the natural wind speed,the train running speed or the train running frequency is high,therefore,the cold-proof measures of long tunnels in cold regions should not be used only in the entrance.And thermal insulation layers have been unable to meet cold-proof requirements of long tunnels in cold regions when the ambient temperature is less than 15 ℃ and the duration of freezing is more than 45 d,in this case,it is necessary to take active heat preservation measures.关键词
铁路隧道/长大隧道/寒冷地区/温度场/冻结深度/保温技术Key words
railway tunnel/long tunnel/cold region/temperature field/frozen depth/thermal insulation technology分类
交通工程引用本文复制引用
高焱,朱永全,辛浩..寒区长大隧道温度实测与仿真[J].北京交通大学学报,2017,41(1):49-55,7.基金项目
国家科技支撑计划(2012BAG05B01) （2012BAG05B01）
中国铁路总公司科技研究开发计划重点课题(2016G002-A)National Key Technology Research and Development Program of China(2012BAG05B01) （2016G002-A）
Science and Technology Research and Development Key Program of China Railway Corporation(2016G002-A) （2016G002-A）
