高速列车对复杂隧道内空气压力的影响
Air Pressure Effect Caused by High-speed Trains in Complex Tunnel
作者：徐一民(昆明理工大学 电力学院，云南 昆明650051)；王韦(四川大学 水力学与山区河流开发保护国家重点实验室，四川 成都610065)；许唯临(四川大学 水力学与山区河流开发保护国家重点实验室，四川 成都610065)
Author：Xu Yimin(College of Electrical Power Eng.,Kunming Univ. of Sci. and Technol.,Kunming 650051,China)；Wang Wei(State Key Lab. of Hydraulics and Mountain River Eng., Sichuan Univ.,Chengdu 610065,China;3.Sichuan Architecture Profession Technol. College,Deyang 618000,China)；Xu Weilin(State Key Lab. of Hydraulics and Mountain River Eng., Sichuan Univ.,Chengdu 610065,China;3.Sichuan Architecture Profession Technol. College,Deyang 618000,China)
收稿日期：2007-12-05 年卷（期）页码：2009,41(1):21-25
期刊名称：工程科学与技术
Journal Name：Advanced Engineering Sciences
关键字：隧道；高速列车；空气压力；水流模型；竖井；隔墙
Key words：tunnel;high-speed train;air pressure;water medium model；vertical shaft;partition wall
基金项目：国家973计划资助项目（2007CB714105）;教育部新世纪优秀人才支持计划(NCET 04 0879);昆明理工大学人才科研基金（14118140）
中文摘要
复杂隧道内空气压力特性是隧道设计的重要参数，必须进行深入研究。为提高试验中信号强度和改善测量精度，采用水流代替气流作为流体介质进行复杂隧道模型实验，并研究竖井及中隔墙对空气压力特性的影响。得出了高速列车不同运行速度时复杂隧道内不同位置处的空气压力变化规律，即竖井可明显地降低隧道内的空气压力峰值和梯度，而中隔墙将恶化隧道内的空气压力环境。因此，在可能的情况下，对于复杂体型的长隧道，应尽量布设竖井而避免中隔墙。
英文摘要
The air pressure characteristics in a complex tunnel are key factors to the design of the tunnels and need to be studied deeply. In order to enhance the signal intensity and improve the experimental precision, instead of air, water was chosen as the fluid medium and a hydraulic experiment was carried out for complex tunnels with vertical shafts and/or partition wall. Under different velocities, the air pressure processes caused by the train passing through complex tunnels were measured and analyzed。It was demonstrated by the test results that the vertical shafts can obviously decrease the pressure’s peak values and the pressure’s gradients, and the partition wall will worsen the aerodynamic environment. Therefore, if possible, vertical shafts should be chosen and partition walls should be avoided for long complex tunnels.
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