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Research Article | Open Access

Research and development of foam smoke reduction device for underground confined spaces

Hetang Wanga,b( )Xiaojuan Lia,bZhuoqi Zhua,bPanpan Yanga,bHaidong GuocZhenlu Shaoa,b
State Key Laboratory of Coal Mine Disaster Prevention and Control, China University of Mining and Technology, Xuzhou 221116, China
School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China
Sichuan Fire Research Institute of MEN, Chengdu 610036, China
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Abstract

Smoke control technology is crucial in the risk management of fire in underground confined spaces. In this study, the integrated foam smoke reduction device (FSRD) of “foaming–spraying” is proposed in response to the challenging problem of smoke control of fire in underground confined spaces. The overall structure of FSRD device is designed and optimized through the numerical simulation of the internal flow field and experimental research. The optimal basic parameters are as follows: area ratio (Rm) of 20.25, pitch-to-diameter ratio (Rtd) of 1/3 or 5/9, and throat diameter (d3) of 18 mm . Additionally, the throat–nozzle distance (Lt) is 12 mm, and the operating pressure (p0) is 3.0 MPa. Finally, the smoke reduction experiment verified that the FSRD designed in this study had a better effect of elimination than fine water mist and cylindrical foam jet, with the elimination efficiency reaching 36.73%. This study provides a new device for smoke reduction in controlling fires in underground confined spaces.

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Journal of Intelligent Construction
Article number: 9180025
Cite this article:
Wang H, Li X, Zhu Z, et al. Research and development of foam smoke reduction device for underground confined spaces. Journal of Intelligent Construction, 2024, 2(2): 9180025. https://doi.org/10.26599/JIC.2024.9180025
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Received: 06 November 2023
Revised: 14 February 2024
Accepted: 28 February 2024
Published: 11 May 2024
© The Author(s) 2024. Published by Tsinghua University Press.

The articles published in this open access journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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