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我矿地处平原,井下出风口亦处在人口稠密区。距出风口50米远就有成片住户。据测定,出风口安装的2K60-№18轴流风机的噪音达135.26分贝,已大大超过有关安全规程中并下和地面各作业地点的噪音水平不得超过90分贝(A声级)的规定,应采取措施,消除燥声危害。通过调查了解,综合分析,我们认为该风机工作噪音来源主要有三:(1)空气动力性噪音;(2)机械性噪音,(3)电动机磁性噪音。基于上述,我们从选择消音材料到建筑结构方面采取了如下措施:在构筑物方面,用疏松的米花砼结构,
Mine is located in plains, downhole air outlet is also in a densely populated area. 50 meters away from the outlet there is a film into households. It has been determined that the noise of the outlet-mounted 2K60-№18 axial fan reaches 135.26 dB, which has greatly exceeded the requirements of the relevant safety regulations and the noise level at each worksite on the ground should not exceed 90 dB (A sound level) Take measures to eliminate the harm of dry sound. Through investigation, comprehensive analysis, we think there are three main sources of noise for the fan work: (1) aerodynamic noise; (2) mechanical noise; (3) motor magnetic noise. Based on the above, we have taken the following measures from the choice of sound-attenuating materials to the building structure: In terms of structures, the use of loose concrete structure,