Observing How Influence of Nature Phenomena Against Inside Tunnel by Air Pressure Information

Monitoring inside the tunnel is important to be safe for road. A long mountain tunnel such as Kan-Etsu tunnel must ventilate the road. Ventilation system for Kan-Etsu tunnel controls the rotation speed of fans installed inside the tunnel to fill the lack of wind volume for ventilation. However, the fans cannot change rotation speed abruptly. Therefore, the ventilation system estimates near future conditions and calculates the necessary rotation speed. The ventilation is influenced by winds which are generated by traffic cars and nature phenomena, so that its estimation needs to recognize cars and nature effecting. Although the existing system measures traffic influence with a traffic counter installed in front of the tunnel, the system cannot measure natural phenomena. In addition, installed wind sensor in the entrance measures wind speed. The measured speed is treated as a ventilation result, but natural wind cannot be extracted from the sensor result. Therefore, the influence from nature wind haven’t been clear. To measure the influence is important to improve the ventilation controlling in the tunnel. In this paper, we reported influences of natural phenomena against inside tunnel conditions by monitoring air pressure. By observing pressure movement at each entrance, nature effecting can be measured. In this paper, pressure sensor arrays were installed at entrances and inside roads. By observing sensor behaviors, tunnel condition was monitored. The observation was executed multiple times but different seasons. As a result, this paper showed natural wind from each entrance influences the tunnel inside condition.

• Record URL:
  • https://doi.org/10.1007/978-3-030-79801-7
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9783030798000
• Supplemental Notes:
  • © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2022. The contents of this paper reflect the views of the author[s] and do not necessarily reflect the official views or policies of the Transportation Research Board or the National Academy of Sciences.
• Authors:
  • Kawauchi, Kensaku
  • Watanabe, Yumi
  • Mizushima, Yuichi
  • Hosokai, Takeo
• Conference:
  • 18th International Road Federation World Meeting & Exhibition
  • Location: Dubai , United Arab Emirates
  • Date: 2021-11-7 to 2021-11-10
• Publication Date: 2022-4

Language

• English

Media Info

• Media Type: Web
• Edition: 1
• Features: References;
• Pagination: pp 975-985
• Monograph Title: Advances in Road Infrastructure and Mobility: Proceedings of the 18th International Road Federation World Meeting & Exhibition, Dubai 2021
• Serial:
  • Sustainable Civil Infrastructures
  • Publisher: Springer Cham
  • ISSN: 2366-3405
  • Serial URL: https://www.springer.com/series/15140

Subject/Index Terms

• TRT Terms: Air currents; Air pressure; Mountain roads; Remote sensing; Tunnel borers; Tunnels; Ventilation systems
• Geographic Terms: Japan
• Subject Areas: Bridges and other structures; Design; Highways; Safety and Human Factors;

Filing Info

• Accession Number: 01870689
• Record Type: Publication
• ISBN: 9783030798000
• Files: TRIS
• Created Date: Jan 24 2023 9:28AM