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一、概况 广州地铁1号线全线长18.48 km,于1999年6月28日正式建成通车。在通车前后,我们研究了地铁噪声源和传声的途径,实测了人聚空间主要是站台和在运行状态中车厢内的声环境指标,参照有关规范对其进行评价。 地铁声环境按区域分为隧道内声环境、站台声环境、车厢内声环境、站台声环境和地面地铁口声环境。地铁声源由有用声和环境噪声组成。列车内和站台上必须的广播声是有用声;人的听觉生理所必须的、声强级较低的背景噪声也是有用声,列车未到时站台的
I. Overview Guangzhou Metro Line 1 is 18.48 km long across the board, was officially opened to traffic on June 28, 1999. Before and after the opening of the traffic, we studied the ways of the noise sources and the sound transmission of the subway. It was measured that the intergalactic space mainly consisted of the platform and the acoustic environment in the car during operation, and evaluated according to relevant norms. According to the area, the acoustic environment of the subway is divided into the acoustic environment inside the tunnel, the sound environment of the platform, the sound environment inside the car, the sound environment of the platform and the sound environment of the subway on the ground. Subway sound source by the useful noise and environmental noise. The necessary broadcast sound in the train and on the platform is useful; the human body’s acoustic environment is necessary, and the background noise with low sound level is also useful. When the train is not over