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Study on fire smoke flow characteristics in the ventilation network and linkage control system in coal mines |
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| Authors: | Kai Wang Haiqing Hao Shuguang Jiang Zhengyan Wu Weiyao Cai Ziting Wang |
| Affiliation: | 1. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining & Technology, Xuzhou, China;2. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining & Technology, Xuzhou, China
Key Laboratory of Coal Methane and Fire Control, China University of Mining & Technology, Xuzhou, China School of Safety Engineering, China University of Mining & Technology, Xuzhou, China;3. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining & Technology, Xuzhou, China School of Safety Engineering, China University of Mining & Technology, Xuzhou, China;4. Key Laboratory of Coal Methane and Fire Control, China University of Mining & Technology, Xuzhou, China School of Safety Engineering, China University of Mining & Technology, Xuzhou, China |
| Abstract: | In coal mining, smoke flow from tunnel fires can easily cause a large number of deaths in the ventilation network. But the optimal smoke flow path control methods and automatic control system were lacked. In order to improve the efficiency of fire emergency rescue, the control mechanism and regional linkage control system for fire induced smoke flow in ventilation network was studied. Based on a ventilation system in coal mines, different fire scenarios for smoke flow were analysed using ventilation simulation software (VSS). Smoke flow control methods were simulated under different ventilation modes, a contrastive analysis was conducted for the respective effects and the optimal smoke flow path control methods were confirmed in different fire scenarios. A new type of ventilation facility, regional monitoring sub-stations and remote linkage control platforms were developed for smoke control. A reliability evaluation model for the control system was established by Bayesian network. The failure of the linkage control is 98.9%, the monitoring sub-station is 64.4%, the sub-station communication is 43.9%; thus, a double insurance of the control process must be realised. Since its application, the proposed regional linkage control system has been repeatedly tested through fire drills, and good results have been obtained. |
| Keywords: | emergency regulation security assurance smoke control tunnel fire ventilation simulation |