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矿井主扇是矿山机械通风的主要设备。主扇噪声是矿山噪声主要声源之一。主扇噪声包括排风口(抽出式通风)或进风口(压入式通风)的空气动力噪声,A声级一般在105dB以上;其次是机壳的机械振动噪声和
Mine main fan is the main mechanical ventilation equipment. Main fan noise is one of the main sources of mine noise. The main fan noise includes the exhaust of the exhaust (ventilation) or air inlet (press-in ventilation) aerodynamic noise, A sound level is generally above 105dB; followed by the mechanical vibration noise and chassis