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Development of remote control automatic fire extinguishing system for fire suppression in double-deck tunnel

복층터널 화재대응을 위한 원격 자동소화 시스템 개발 연구

  • Park, Jinouk (Fire Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Yoo, Yongho (Fire Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Kim, Yangkyun (Fire Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Park, Byoungjik (Fire Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Kim, Whiseong (Fire Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Park, Sangheon (Dong Il Engineering Consultants)
  • Received : 2018.12.03
  • Accepted : 2018.12.27
  • Published : 2019.01.31

Abstract

To effectively deal with the fire in tunnel which is mostly the vehicle fire, it's more important to suppress the fire at early stage. In urban tunnel, however, accessibility to the scene of fire by the fire fighter is very limited due to severe traffic congestion which causes the difficulty with firefighting activity in timely manner and such a problem would be further worsened in underground road (double-deck tunnel) which has been increasingly extended and deepened. In preparation for the disaster in Korea, the range of life safety facilities for installation is defined based on category of the extension and fire protection referring to risk hazard index which is determined depending on tunnel length and conditions, and particularly to directly deal with the tunnel fire, fire extinguisher, indoor hydrant and sprinkler are designated as the mandatory facilities depending on category. But such fire extinguishing installations are found inappropriate functionally and technically and thus the measure to improve the system needs to be taken. Particularly in a double-deck tunnel which accommodates the traffic in both directions within a single tunnel of which section is divided by intermediate slab, the facility or the system which functions more rapidly and effectively is more than important. This study, thus, is intended to supplement the problems with existing tunnel life safety system (fire extinguishing) and develop the remote-controlled automatic fire extinguishing system which is optimized for a double-deck tunnel. Consequently, the system considering low floor height and extended length as well as indoor hydrant for a wide range of use have been developed together with the performance verification and the process for commercialization before applying to the tunnel is underway now.

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Fig. 1. Operating process for remote control automatic fire extinguishing system

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Fig. 2. Design for automatic monitor

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Fig. 3. Projected area and maximum discharge height of water jet in accordance with nozzle angle

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Fig. 4. Remote control automatic fire extinguishing system for long distance

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Fig. 5. Remote control fire extinguishing system for fire hose station

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Fig. 6. Schematic of remote control fire extinguishing system for fire hose station

Table 1. Spray characteristics according to ejection angle (head height 1.6 m, ejection pressure 300 kPa)

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Table 2. Spray characteristics according to ejection pressure (head height 1.6 m, ejection angle 15°)

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Acknowledgement

Grant : 대심도 복층터널 설계 및 시공기술개발

Supported by : 국토교통과학기술진흥원

References

  1. Kim, D.S., Kim, D.H., Kim, W.S., Lee, D.H., Lee, H.S. (2006), "Extimation of safety in railway tunnel by using quantitative risk assessment", Journal of Korean Society for Rock Mechanics, Vol. 16, No. 5, pp. 357-367.
  2. Ministry of Land Infrastructure and Transport (2016), "Road tunnel disaster prevention facility installation & management guideline", pp. 5-17.
  3. Statistics Korea (2017), "Time-based traffic accidents by road type-Accident statistics in tunnel and underground roads", KOSIS.
  4. Yoo, Y.H., Park, S.H., Han, S.J., Park, J.O. (2016), "The study on application of automatic monitor system for initial fire suppression in double-deck tunnel", Journal of Korean Tunnelling and Underground Space Association, Vol. 18, No. 5, pp. 419-429. https://doi.org/10.9711/KTAJ.2016.18.5.419