石化企业工业噪声对绿色城市环境影响的实测分析

Impact of Industrial Noise in Petrochemical Enterprises on Green Urban Environment:Practical Measurement and Analysis

随着城市空间的不断发展,噪声污染问题成为绿色城市环境营造的重点问题之一。在众多噪声源中,工业企业噪声由于其声级高、低频成分高等特征,对于周围环境的影响尤为严重。选取能源企业注水泵房及压缩机房作为典型工业噪声源,通过实测分析了其厂区内、厂界及厂区外的噪声强度,频谱分布及传播衰减规律等基本特征,并结合我国现行法规分析了其噪声对于周围环境的影响。结果表明,样本机房在厂界处的噪声级分别达到66、82 d BA。从频谱分布来看,注水泵房噪声和压缩机房噪声都属于宽频噪声,广泛地分布在50~8 000 Hz频带上。在厂界以外,噪声随距离不断衰减,基本呈线性关系。距离每增加10 m,噪声声压级分别可以降低1.5~5 d B。

With the development of urban spaces,sound pollution becomes an important issue to the whole green urban environment.Among all noise sources,the impact of industrial factory noise on surrounding environment is particularly serious because of the high noise level and low frequency components.This paper carried out a field measurement on factory noise of water flooding pump station and compressor room.The sound level,spectrum distribution and the attenuation inside and outside the factory were analyzed.The results show that the sound level at the factory boundary reached 66dBA and 82dBA,respectively.Besides the factory noise from water flooding pump station and compressor room were both broadband noise with an even distribution from 50Hz to 8000 Hz,outside the factory,a linear relationship was found between the noise level and the distance between receiver and the factory boundary.The noise level decreased by 1.5~5dB per 10 meter.