Simulation study on the spreading characteristics of fire smoke in underground cable trench

Yong Zhao; Yuetao Pan; Jingwei Ma; Ming Hu; Yanxia Shi

doi:10.1117/12.2642620

28 July 2022 Simulation study on the spreading characteristics of fire smoke in underground cable trench

Yong Zhao, Yuetao Pan, Jingwei Ma, Ming Hu, Yanxia Shi

Proceedings Volume 12303, International Conference on Cloud Computing, Internet of Things, and Computer Applications (CICA 2022); 123032E (2022) https://doi.org/10.1117/12.2642620
Event: International Conference on Cloud Computing, Internet of Things, and Computer Applications, 2022, Luoyang, China

Abstract

In order to reveal the spread law of fire smoke in underground cable trench, the simulation study on the spread characteristics of fire smoke in underground cable trench is carried out. Analyze the temperature changes of each wall and cable surface of the cable trench, and the influence of different cable laying depths, cable spacing and arrangement on the fire spread of the underground cable trench. The results show that under the action of buoyancy, the smoke formed by cable combustion spreads towards the ceiling and diffuses horizontally with the increasing fire. The temperature above the fire source is affected by the fire, and the temperature is the highest. The farther away from the fire source, the lower the temperature, and the heating speed of the lower wall is faster than that of the sidewall. When the depth of the underground cable trench is 1.2m, the cables are laid in parallel and the cable spacing is 0.2m, it has little impact on the fire spread situation of underground cable trench.

Citation Download Citation

Yong Zhao, Yuetao Pan, Jingwei Ma, Ming Hu, and Yanxia Shi "Simulation study on the spreading characteristics of fire smoke in underground cable trench", Proc. SPIE 12303, International Conference on Cloud Computing, Internet of Things, and Computer Applications (CICA 2022), 123032E (28 July 2022); https://doi.org/10.1117/12.2642620

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