According to the law of similarity of fan, the characteristic of long-distance tunneling ventilation was analyzed, and the energy consumption of variable frequency fan was described.
根据风杌的相似定律，阐述了特长隧道掘进通风的特性，详细分析了风机变频工作的能耗。
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This paper mainly focused on the gas emission law of coal wall for the double tunneling working faces.