摘要
以深圳市前海湾车辆段和横岗车辆段试车线为例,对其试车过程中的噪声影响源强及传播情况进行实测分析。结果表明,试车线车辆行驶速度约为36 km/h,噪声源强LeqA约为73 d B左右,试车中噪声最大值约为83 d B;试车线内噪声源的传播并不完全遵循一般的线性递减规律,在距声源30 m范围内,距声源越近,衰减量越小,反之,主要是由于距离声源越远,受到墙体或立柱等阻挡引起的附加衰减就越大。
Based on the noise measurements of the test lines in the Shenzhen Qianhai Bay and Henggang Metro depots, the noise source intensity and its propagation during testing are analyzed in this paper. The results show that when the driving speed of the test vehicle is about 36 km/h, the intensity of the noise source （expressed in LoqA） is approximately 73 dB, and the maximum is about 83 dB. The spread of the noise from the test line is not fully following the general linear decrease rule. Within the scope 30 meters from the noise source, the nearer to the sound source is, the smaller the attenuation, while the farther away from the noise source, the greater the attenuation.
出处
《环境监控与预警》
2015年第4期43-46,共4页
Environmental Monitoring and Forewarning
基金
深圳市2013年政府采购项目
关键词
地铁车辆段
试车线噪声
噪声源强
噪声传播规律
深圳市
Metro depot
Noise of the test line
Noise source intensity
Propagation rule of noise
Shenzhen
