一、前言铁路系统随着生产的发展,噪声的危害日趋严重。为了解北京地区铁路厂、段生产性噪声的现状,我们曾对在京的部分厂、段的典型噪声源进行了测量分析。使用仪器为丹麦B&k公司的2209型声级计;1613倍频程滤波器组;4424型噪声累计剂量仪;2225型积分声级计。测量前使用4230型声级校准器或4220型活塞发声器对仪器进行校准。测量方法依据《工业企业噪声检测规范》进行。本次测量以A声级作为评定依据,同时记下C声级 I. Preface As the development of production in the railway system, the harm of noise is becoming increasingly serious. In order to understand the current status of productive noise in Beijing’s railway factories and sections, we conducted a survey and analysis of typical noise sources in some factories and sections in Beijing. Instrument used in the Danish company B & K 2209-type sound level meter; 1613 octave filter group; 4424-type noise cumulative dosimeter; 2225-type integral sound level meter. Calibrate the instrument with a Model 4230 Sound Level Calibrator or Model 4220 Piston Phono before making measurements. Measurement methods based on “industrial noise testing norms”. This measurement is based on the A sound level, while recording the C sound level