- 著者
- 恒吉 宏亮 平田 京一郎 鈴木 健一郎 髙橋 志宗 飛田 祐志 上田 篤 渡邊 慎太郎 市川 俊和 仲川 政宏 萩原 隆男 本間 正勝 岡本 勝弘
- 出版者
- 日本法科学技術学会
- 雑誌
- 日本法科学技術学会誌 (ISSN:18801323)
- 巻号頁・発行日
- vol.27, no.2, pp.137-150, 2022 (Released:2022-07-31)
- 参考文献数
- 15
In the case of a fire incident such as arson, the combustion experiment that reconstructed the fire scene will be conducted to clarify the facts. However, various problems such as construction costs and securing an experimental environment must be dealt with. Therefore, the purpose of this study is to utilize fire simulation for the investigation of fire incidents. In this study, combustion experiments and FDS (Fire Dynamics Simulator) simulations assuming gasoline arson in the kitchen, which have not been reported so far, were conducted and compared. Next, the observation of fire damage using the accumulated heat-flux was evaluated by a newly developed analysis tool for visual evaluation. The simulation results such as burning behavior, temperature changes, and the burned away phenomenon of the door showed good agreement with those experimental results. Burning behavior in the kitchen, that couldn't be observed in the combustion experiment were grasped in detail in the simulation. Furthermore, the relationship between the fire source and the fire damage on the floor, which couldn't be explained only by the observation results after extinguishing the fire, could be reasonably explained by the visual evaluation of burning behavior and the accumulated heat-flux in the kitchen by using the simulation. Therefore, the fire simulation was shown to be an effective tool for analyzing fire phenomena.
1 0 0 0 加熱式たばこの火災危険性に関する研究
たばこは死者発生住宅火災の主要原因であり、火災の原因究明や予防の観点から大きな関心を持たれている。紙巻たばこの燃焼形態はくん焼(無炎燃焼)であり、可燃物との接触から出火に至ることが知られている。近年、着火に裸火を使用せず電気ヒーターで加熱する加熱式たばこが急速に普及し始めたが、加熱器の連続使用時における加熱器内たばこ残渣物の火災危険性や、様々な可燃物に対する延焼・引火危険性は十分には明らかにされていない。本研究では、加熱式たばこの温度特性、熱特性、燃焼形態、周囲可燃物への延焼危険性、可燃性ガスへの引火危険性を実験により明らかにし、実大規模の出火実験を行うことで、予想される火災危険性を抽出する。