主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
Fire Science and Technology

Fire Science and Technology ›› 2020, Vol. 39 ›› Issue (11): 1515-1518.

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Research on wood crib fire extinguishing based on small size sand-throwing equipment

GUO Wan-hai1,2,3,4, ZHU Guo-qing1,2,3,4, YAO Bin1,2,3,4, LIANG Zhen-huan1,2,3,4   

  1. 1. Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, Jiangsu Xuzhou 221116, China；2. Institute of Public Safety and Fire Protection, China University of Mining and Technology, Jiangsu Xuzhou 221116, China；3. Key Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Jiangsu Xuzhou 221116, China ；4. Faculty of Safety Engineering, China University of Mining and Technology, Jiangsu Xuzhou 221116, China

  • Online:2020-11-15 Published:2020-11-15

Abstract:

Based on the small- scale sand throwing equipment, the fire-fighting effect of sand extinguishing standard 1-A woodcrib fire was studied. The change characteristics of wood crib fire before and after sand throwing were measured by K-type armored thermocouple and infrared thermal imager. The results show that the sand can effectively inhibit the open fire on the surface of the wood crib, and the flame above the wood crib was suppressed at the initial stage of fire extinguishing, and the open fire on the surface of the wood crib disappears after 30 s of sand throwing. Under the impact of sand, there are obvious differences in the temperature changes at different positions of the wooden pile. The temperature drop range is shown as follows:the surface facing the sand is the largest, the surface at the side of sand is the second, and the center line is the least.

Key words:

small size sand throwing equipment, 1-A wood crib fire, extinguishment by sand-throwing; temperrature changes