Numerical Simulation about the Effect of Tunnel Expansion Chamber on the Shock Wave Attenuation

DOI

10.2991/iccmcee-15.2015.106How to use a DOI?

Keywords

Tunnel; shock wave; Numerical simulation; Expansion chamber

Abstract

Setting up an expansion chamber in the local tunnel can accelerate the attenuation speed of the shock wave, which is of great importance for safety protection of the tunnel staff. Under the same simplified conditions, the reliability of the numerical model was verified according to the theoretical formula calculation results. The simulation results of the long straight tunnel and the tunnel with expansion chamber were compared. Results show that the overpressure in the tunnel with expansion chamber is lower than that in the long straight tunnel at the same distance. Then, the length-width ratio was changed. Taking both the protection performance and construction cost into consideration, it is concluded that expansion chamber with the length-width ratio of 2.5 is relatively appropriate. The study can offer effective reference for structure design of the underground tunnel.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Bei-lei Zhao
AU  - Cun-yan Cui
AU  - Jing-peng Chen
AU  - Yan Wang
PY  - 2015/11
DA  - 2015/11
TI  - Numerical Simulation about the Effect of Tunnel Expansion Chamber on the Shock Wave Attenuation
BT  - Proceedings of the 2015 4th International Conference on Computer, Mechatronics, Control and Electronic Engineering
PB  - Atlantis Press
SP  - 582
EP  - 587
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccmcee-15.2015.106
DO  - 10.2991/iccmcee-15.2015.106
ID  - Zhao2015/11
ER  -