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Abstract Tashan coal mine is one of the high gas mines of Datong Mining Group, and the gas hazard is the biggest threat to the safe production of the mine. In order to ensure safe production, the parameters of gas content, gas gush and CO2 gush at 8116 working face were analyzed, through the work of changing wind flow line, and the existing ventilation circuit was improved without additional local fan fans and increasing ventilation cost. The application effect showed that the ventilation efficiency of the optimized system was significantly improved, and the solution can realize the effective ventilation of the comprehensive mining working face.
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