高速铁路隧道压力波是高速铁路隧道修建中的关键技术，研究结果是合理确定隧道断面大小的主要参考依据。在简要回顾国内外相关方面研究成果的基础上，重点介绍了作者等人多年来采用的一维可压缩非定常不等熵流动模型和特征线法，介绍了隧道单车压力波、隧道会车压力波和考虑竖井、隧道内断面突变等情形下的验证实例。

The analysis of pressure waves induced by passage of highspeed trains in a tunnel is a key in the design and construction of tunnel, which is one of the main factors for determining the crosssection of tunnel.  Based on many investigations in some countries, the onedimensional compressible unsteady flow model and the  characteristics method  are presented in detail in this paper.  The model can be used to calculate the pressure waves induced by passage of a train or two trains in a tunnel without or with shafts.