电气化铁路隧道微波防冰研究  

Research on microwave anti-icing for electrified railway tunnel

作　　者：王永亮 钟选明[1] 廖成[1] 李军野 冯菊[1] WANG Yongliang;ZHONG Xuanming;LIAO Cheng;LI Junye;FENG Ju(Institute of Electromagnetic and Microwave Technology,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学电磁场与微波技术研究所,四川成都610031

出　　处：《现代电子技术》2018年第7期106-110,共5页Modern Electronics Technique

基　　金：国家973计划资助项目(2013CB328904);中央高校基本科研业务专项资金(2682015CX062)~~

摘　　要：对电气化铁路隧道的防冰问题进行研究,提出非接触式微波致热防冰方法。该方法通过天线发射微波加热隧道裂缝渗水处的混凝土,使得渗水处温度上升,温升超过5℃,促使渗水区跨越-5~0℃这一水凝结成冰的温度区段,防止渗水凝结成冰,实现隧道防冰目的。同时对微波频率、天线输入功率与隧道微波防冰效率的关系进行仿真研究。结果表明,将2.45 GHz,2 000 W微波馈入天线,延时4 443 s,渗水处温升达到5℃。天线输入功率越大,温升越快;相同条件下,5.8 GHz的防冰效率较2.45 GHz高,前者为后者的2.3倍,频率越高,温升越快。The anti-icing problem of electrified railway tunnel is studied,and a non-contact anti-icing method with micro-wave heating is proposed.In this method,the microwave emitted by antenna heats the concrete at the water seepage area rise of tunnel,which makes the temperature at the water seepage area rise.When the temperature rise is above5℃,the temperature of the water seepage area will stride across the range of-5~0℃to prevent water from freezing,which can realize the tunnel anti-icing.The relationship among the microwave anti-icing efficiency of tunnel,antenna input power and microwave frequency is simulated.The results show that the2.45GHz,2000W microwave is fed into the antenna,its delay is4443s,the tempera-ture rise at the water seepage area can reach up to5℃.The greater the antenna input power is,the higher the temperature rise becomes.Under the same conditions,the anti-icing efficiency of5.8GHz microwave is higher than that of the2.45GHz micro-wave,the former is2.3times of the latter,and the higher the frequency is,the faster the temperature rise becomes.

关 键 词：铁路隧道 微波防冰 效率温升 电气化 非接触式 防冰效率 

分 类 号：TN99-34[电子电信—信号与信息处理] U226.83[电子电信—信息与通信工程]