文献类型：期刊文献

英文题名：A new sustainable energy based freeze proof method for drainage system in cold-region tunnels: A case study of Tianshan Shengli Tunnel

作者：Zhang, Yao[1];Xia, Caichu[2];Zhou, Shuwei[1];Hu, Yunjin[3];Zhang, Jianxin[4]

机构：[1]Tongji Univ, Dept Geotech Engn, Coll Civil Engn, Shanghai 200092, Peoples R China;[2]Ningbo Univ, Inst Rock Mech, Ningbo 315211, Zhejiang, Peoples R China;[3]Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Peoples R China;[4]Xinjiang Transportat Planning Survey Design & Res, Urumqi 830000, Peoples R China

年份：2022

卷号：34

外文期刊名：CASE STUDIES IN THERMAL ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000793764400006)、、EI(收录号：20221812045256)、Scopus(收录号：2-s2.0-85128891432)、WOS

基金：This work was supported by the Xinjiang Uygur Autonomous Region Science and Technology Major Project (Grant No.2020A03003-2) , the National Natural Science Foundation of China (Grant No.51778475) and Fundamental Research Funds for the Central Universities of China (22120210056) .

语种：英文

外文关键词：Cold-region tunnels; Geothermal energy; Cyclic accumulation freezing; Full life cycle; Fluid-thermal-solid model

外文摘要：In order to solve frost damage problems in cold-region tunnels, a new sustainable energy based freeze proof method for tunnel drainage system is proposed. The method is applied to Tianshan Shengli Tunnel, China as a case study to show the concept and details of tunnel drainage system ground heat exchangers (GHEs) including calculation of active heating length and maximum heating load, design of heat extraction in cross tunnel, the segmented design method. Long-term performance of tunnel drainage system GHEs is also fully discussed. Multi-field simulations are performed to achieve corresponding thermal responses of the tunnel drainage system GHEs. Results show that anti-freezing measures provide an initial heating length 900 m of the drainage system at the entrance of Tianshan Shengli Tunnel during full life cycle. When the tunnel drainage system GHEs are employed, the heating length can be reduced to 600 m. Maximum total heating load of the tunnel drainage system in heating period is 84.40 kW. The calculation method of segmented heating load is suggested for precise prevention and control of frost damage in coldregion tunnels, owing to varying tunnel air temperature with the distance from the tunnel entrance. The use of boiler heating in winter will enhance the compensation between operation and recovery period and provides good long-term performance. This study provides a potential reference for antifreeze design of cold-region tunnels utilizing geothermal energy.