• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Research on early detection of tunnel fires and improving effectiveness of zero flow control

Research Project

Project/Area Number 20K05008
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 25020:Safety engineering-related
Research InstitutionKomatsu University

Principal Investigator

Kawabata Nobuyoshi  公立小松大学, 生産システム科学部, 教授 (90126631)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsトンネル火災 / 安全性評価 / 風速0化 / 縦流換気 / 煙降下 / 避難環境 / 煙降下現象 / 早期検知 / 煙拡散 / 集中排煙 / 煙制御
Outline of Research at the Start

渋滞している道路トンネル内で火災事故が発生した場合、日本では火災近くを無風とし、煙の成層状態を維持し、路面での避難環境を実現することになっている。しかし排煙しないため、時間の経過とともに路面に拡散し避難不可能な状態になるため、早期避難および成層状態の維持は重要な課題である。本研究では、発炎前のくすぶり煙の存在による光量の変化によって火災の早期検知を可能にすること、さらに火災成長期に煙の拡がりをモニタリングすることによって成層状態をより長く維持できる換気制御について検討することによってより早い避難とより長い成層状態を可能にすることを目的とする。

Outline of Final Research Achievements

This research has three components: (1) experiments to detect smoking smoke in an actual tunnel, (2) elucidation of smoke descent characteristics, and (3) examination of effective methods of zero wind speed operation. In (1), various sensors were evaluated for early detection of fire at the smoldering stage. In (2), model experiments were conducted to clarify the descent position and descent time, and the reproducibility of simulations was confirmed. In (3), a comparison was made between the Western and Japanese evaluation methods for the same tunnel. Furthermore, in the case of a 100 MW large fire, it was clarified that the Japanese method of zero wind speed is also effective in large-scale fires. Furthermore, the results of a subject experiment on evacuation speed in smoke conducted in previous years were collated, and a walking speed model for evacuation simulations was constructed.

Academic Significance and Societal Importance of the Research Achievements

日本の道路トンネルは縦流換気方式が主流であり,火災安全性の向上には煙の降下特性の解明が重要である.しかしながら,降下特性に関する研究論文は極めて少なく,特性の解明がなされたとは言えない.本研究はこの降下特性について,実験,シミュレーションの両面から検討を行い,勾配0%,風速0m/sの場合について明らかにしたことは学術的意義を有していると言える.次に降下開始時間を遅らし,成層状態を長く維持することを目的とした煙の拡がりを検知するセンサ,さらに煙中の避難速度モデルを構築し,避難シミュレーションを通して適切な換気運用方法を提案したことはトンネル火災安全性の向上に寄与し,社会的意義を有すると言える.

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (19 results)

All 2023 2022 2021 2020 Other

All Int'l Joint Research (3 results) Journal Article (10 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 8 results,  Open Access: 4 results) Presentation (6 results)

  • [Int'l Joint Research] 台湾中央警察大学(その他の国・地域)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] 台湾 中央警察大学(その他の国・地域)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Fire Department, New Taipei City/Central Police University(Taiwan)(その他の国・地域)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Assessment Method Integrating Visibility and Toxic Gas for Road Tunnel Fires Using 2D Maps for Identifying Risks in the Smoke Environment2023

    • Author(s)
      Hsieh Huei-Ru、Chung Hung-Chieh、Kawabata Nobuyoshi、Seike Miho、Hasegawa Masato、Chien Shen-Wen、Shen Tzu-Sheng
    • Journal Title

      Fire

      Volume: 6 Issue: 4 Pages: 173-173

    • DOI

      10.3390/fire6040173

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Walking speed under emergency situation in smoke-filled tunnel with obstacles2023

    • Author(s)
      Seike Miho、Kawabata Nobuyoshi、Hasegawa Masato
    • Journal Title

      Tunnelling and Underground Space Technology

      Volume: 133 Pages: 104939-104962

    • DOI

      10.1016/j.tust.2022.104939

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Numerical Study of Smoke Distribution in Inclined Tunnel Fire Ventilation Modes Considering Traffic Conditions2023

    • Author(s)
      Tung Po-Wei、Chung Hung-Chieh、Kawabata Nobuyoshi、Seike Miho、Hasegawa Masato、Chien Shen-Wen、Shen Tzu-Sheng
    • Journal Title

      Buildings

      Volume: 13 Issue: 3 Pages: 714-749

    • DOI

      10.3390/buildings13030714

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Walking Speed in a Motorbike Lane Considering the Density of Evacuees and Motorbikes2022

    • Author(s)
      Cheng Cheng-Chung、Chung Hung-Chieh、Kawabata Nobuyoshi、Seike Miho、Hasegawa Masato、Chien Shen-Wen、Shen Tzu-Sheng
    • Journal Title

      Applied Sciences

      Volume: 12 Issue: 24 Pages: 12580-12604

    • DOI

      10.3390/app122412580

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Scale Model Experiments and Simulations to Investigate the Effect of Vehicular Blockage on Backlayering Length in Tunnel Fire2022

    • Author(s)
      Ho Yu-Tsung、Kawabata Nobuyoshi、Seike Miho、Hasegawa Masato、Chien Shen-Wen、Shen Tzu-Sheng
    • Journal Title

      Buildings

      Volume: 12 Issue: 7 Pages: 1006-1029

    • DOI

      10.3390/buildings12071006

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Walking speed probability distribution in smoke-filled tunnel experiments2022

    • Author(s)
      Li-Yu Chen、Seike Miho、Kawabata Nobuyoshi、Hasegawa Masato、Chien Shen-Wen、Shen Tzu-Sheng
    • Journal Title

      Journal of the Chinese Institute of Engineers

      Volume: 45 Issue: 8 Pages: 661-668

    • DOI

      10.1080/02533839.2022.2126402

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of zero-flow control in large-scale tunnel fire2021

    • Author(s)
      KAWABATA Nobuyoshi
    • Journal Title

      The Proceedings of Mechanical Engineering Congress, Japan

      Volume: 2021 Issue: 0 Pages: S054-04

    • DOI

      10.1299/jsmemecj.2021.S054-04

    • ISSN
      2424-2667
    • Related Report
      2021 Research-status Report
  • [Journal Article] Reynolds dependence on smoke backlayering characteristicR2021

    • Author(s)
      KAWABATA Nobuyoshi
    • Journal Title

      The Proceedings of Mechanical Engineering Congress, Japan

      Volume: 2021

    • Related Report
      2021 Research-status Report
  • [Journal Article] EXPERIMENTAL STUDY ON EARLY DETECTION OF TUNNEL FIRE2021

    • Author(s)
      SUZUKI Naoya、KAWABATA Nobuyoshi、YOKOTA Masahiro
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. F2 (Underground Space Research)

      Volume: 77 Issue: 1 Pages: 11-25

    • DOI

      10.2208/jscejusr.77.1_11

    • NAID

      130007988612

    • ISSN
      2185-6583
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] COMPARISON BETWEEN LONGITUDINAL VENTILATION SYSTEM AND POINT EXTRACTION SYSTEM IN ROAD TUNNEL FIRE SAFETY2021

    • Author(s)
      HUANG Ti-Sheng、KAWABATA Nobuyoshi、SEIKE Miho、HASEGAWA Masato、TANAKA Futoshi、CHIEN Shen Wen、SHEN Tzu Sheng
    • Journal Title

      Journal of Japan Society of Civil Engineers, Ser. F2 (Underground Space Research)

      Volume: 77 Issue: 1 Pages: 41-59

    • DOI

      10.2208/jscejusr.77.1_41

    • NAID

      130008028110

    • ISSN
      2185-6583
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] トンネル火災事故時の排煙運転開始のタイミングが人的被害に及ぼす影響2023

    • Author(s)
      川端 信義,鍾 宏杰
    • Organizer
      日本機械学会2023年年次大会講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 縮小模型トンネルに対するLES火災シミュレーション2022

    • Author(s)
      川端信義
    • Organizer
      2022年度 機械学会年次大会講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] トンネル火災煙遡上距離に影響を及ぼすシミュレーション諸元に関する議論2022

    • Author(s)
      川端信義
    • Organizer
      2022年度 機械学会年次大会講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] 水噴霧放水による発熱速度の影響実験(第二報)2022

    • Author(s)
      鈴木智哉、小橋卓実、川端信義、長谷川雅人、江本 信司
    • Organizer
      2022年度 機械学会年次大会講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] 避難時の歩行速度に対する避難者密度の影響2022

    • Author(s)
      鍾 宏杰、鄭 崇鄭、川端信義
    • Organizer
      2022年度 機械学会年次大会講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] On the fire smoke forward exhaust of longitudinal ventilation tunnel2020

    • Author(s)
      KAWABATA Nobuyoshi
    • Organizer
      日本機械学会2020年度年次大会一般講演
    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi