铁路扩能改造工程声环境影响预测分析

以某铁路扩能改造工程项目为例,根据具体工况条件,采用模式预测法进行既有铁路噪声预测和验证,并利用验证的预测方法进行改造后铁路噪声影响预测。预测结果表明,与既有铁路实际监测值相比,改造后噪声值昼间降低0.4～3.4 dB(A),夜间降低2.0～4.8 dB(A),说明铁路电气化改造对沿线噪声敏感点的改善较为明显。

Prediction and Analysis of Acoustic Environmental Impact of Railway Capacity Expansion and Reconstruction Project

Taking a railway capacity expansion and reconstruction project as an example, according to the specific working conditions, the existing railway noise is predicted and verified by mode prediction method, and the influence of railway noise after reconstruction is predicted by verification prediction method. The prediction results show that compared with the actual monitoring value of the existing railway, the noise value after the renovation is reduced by 0.4 ~ 3.4 dB(A) in daytime and 2.0 ~ 4.8 dB (A) at night. This shows that reducing the noise value at the sound source has a significant effect on the overall noise reduction, and shows that the improvement of noise sensitive points along the line railway is obvious after electrification transformation.