煤矿通风机声源外降噪分析与对策

Analysis and Counter Measure for Lowering Noise Out of Acoustic Sources of Coal Mine

从煤矿通风机噪声的传播特征与衰减影响因素入手,阐述声源外控制噪声的方法。即对已安装投入使用的通风机,进行合理的结构改造和安装适当的消声器等主要手段,从传播途径及局部措施上降低风机噪声。

Starting with how the noise of the ventilators travels,and the attenuation factors of the noise of coal mining air,and starting the method of controlling the noise out of the acoustic source,namely the ventilators which have been brought into service,chief measures will be taken to lower the noise,to make reasonable structural reforms to fix adequate noise silencers by locally controlling the traveling.