摘要
对乌鲁木齐至成都旅客列车车厢内的噪声监测表明,一般情况下车厢内噪声等效A声级不超过铁道部部颁标准要求(TB1932-87).在车厢机械陈旧、路况复杂、隧道、狭谷等情况下,车厢乘务室内噪声等效A声级可达74.9～84.6dB(A),最高超标9.6dB(A),全程超标2.2dB(A).
The noise monitoring on the passenger trains of Urumqi-Chengdu indicates that in general the noise equivalent sound level A in carriages is below the standard level (TB1932-87) issued by the Railway Ministry. But in the case of obsolete carriage machine, complicated railway conditions, railway tunnels and narrow valleys, the noise equivalent sound level A in carriages can reach to 74.9-84.6dB(A), the highest noise exceeds the standard level 9.6dB(A). The noise of the whole course exceeds the standard level 2.2dB(A).
出处
《干旱环境监测》
1992年第2期89-91,106,共4页
Arid Environmental Monitoring
关键词
旅客列车
车厢内
噪声
Passenger Train
Carriages
Noise.
