地下工程中的噪声源有风洞、空气压缩机站、进排风机房、中频电机等。风洞和空气压缩机的噪声大、频带宽、声级高,风洞试验大厅噪声级120分贝(A)左右,空气压缩机站为110分贝左右。空气压缩机噪声持续时间长,对人的影响很大。我们针对噪声源的特点采取了相应的措施,取得比较满意 Underground sources of noise in the project have a wind tunnel, air compressor station, into the exhaust fan room, IF motor. Wind tunnel and air compressor noise, wide band, high sound level, wind tunnel test hall noise level of about 120 decibels (A), air compressor station is about 110 decibels. Air compressor noise for a long time, a great impact on people. We have taken corresponding measures according to the characteristics of the noise source and achieved satisfactory results