Numerical Simulation Study On Fire Hazard Of A Coal Mine Transport Roadway
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State Key Laboratory of High-Efficient Mining and Safety of Metal Mines (University of Science and Technology Beijing), Ministry of Education, Beijing 100083, China
School of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi Province, 710054, China
Corresponding author
Zhian Huang   

State Key Laboratory of High-Efficient Mining and Safety of Metal Mines (University of Science and Technology Beijing), Ministry of Education, Beijing 100083, China
Mining Science 2022;29:33-52
Due to the special structures and geographical environments of the main transport roadway of underground coal mines, it is difficult to deal with accidents and rescues in cases of fire and it is easy to cause casualties and structural damage of the roadway. In this study, a roadway fire model was established using FDS software on the basis of theoretical analysis. The smoke diffusion, temperature distribution, and CO concentration distribution in a fire period were simulated under four working conditions. The results showed that the time required for the smoke layer to descend to human breathing height was positively correlated with the distance between the position and the fire source. Under the most unfavorable conditions, the smoke reached human breathing height at 15.11 s and 100 m away from the fire source. After the fire broke out, the ambient temperature in the roadway rose rapidly, and the highest temperature in the area adjacent to the fire source reached 340 °C. The farther away from the fire source, the lower the temperature, but it was still higher than the human body's optimum temperature (25 °C) until 200 m away. The results of this study can provide a basis for the preparation of roadway fire emergency plans.
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