Abstract
Gas disaster and prevention is the critical issue in heading laneways of underground coal mine. There are two goals needs to meet, one is air quantity requirement and energy conservation during normal ventilation, the other is safety and quickly during gas outburst. Firstly, gas migration character and auxiliary ventilation system placements are described in detail. Since two control goals need to reach, a dual-mode fuzzy control strategy for auxiliary ventilation is established. Besides weight calculation method which harmonizes subjective and objective weight calculation is put forward. After then, a gas discharging experiment platform including PLC controller, converter and heading laneway simulation model is established on the basis of theoretical analysis and simulation results. Finally, experimental results have shown that the system can safely and efficiently fulfill the function both at normal ventilation and gas discharging.
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