A Simple Scheme for Calculating Distortion of Compression Wave Propagating through a Tunnel with Slab Tracks

  • T. Miyachi
  • S. Ozawa
  • T. Fukuda
  • M. Iida
  • T. Arai
Conference paper


A high-speed train entering a tunnel generates a compression wave that propagates through toward its exit.When the compression wave reaches the tunnel exit, a pressure pulse (“micro-pressure wave” [1, 2]) is radiated from the exit portal, and it causes an environmental problem. The magnitude of the micro-pressure wave is approximately proportional to the maximum pressure gradient ∂ p/ ∂ t max (p: acoustic pressure, t: time) of the compression wave arriving at the tunnel exit [1].


Simple Scheme Compression Wave Tunnel Exit Slab Track Main Tunnel 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • T. Miyachi
    • 1
  • S. Ozawa
    • 1
  • T. Fukuda
    • 1
  • M. Iida
    • 2
  • T. Arai
    • 3
  1. 1.Railway Technical Research InstituteTokyoJapan
  2. 2.Tokyo University of TechnologyTokyoJapan
  3. 3.Osaka Prefecture UniversitySakaiJapan

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