Abstract
When a compression wave generated by a train entering a tunnel is propagated through the tunnel and reaches the exit portal, a pressure pulse ('micro-pressure wave') is radiated from the exit portal. The distortion of the compression wave during propagation in a slab-track tunnel is important for estimating the magnitude of the micro-pressure wave radiated from the exit portal. In this paper, the dependence of the distortion of the compression wave on the initial waveform at the tunnel entrance is investigated theoretically and numerically.
