【摘要】 兰州市受河谷地形限制 ,用地紧张 ,交通问题突出。近年来 ,市内车流量呈显著攀升趋势 ,噪声污染基本保持平稳。近期监测表明 ,市内交通干道车流量较大 ,声环境质量较差 ;典型路段车流量变化时间规律明显 ,车流量与Leq均值在工作日与休息日有显著性差异 ;公交车站噪声比站旁道路更为严重更多还原

【Abstract】 The traffic problems of Lanzhou City have stood out because of its river valley terrain.While the traffic noise has been held in basically,the vehicle flux has showed distinct uptrend in recent years.A recent survey indicates that there is a larger vehicle flux and serious noise pollution in traffic arterys.On typical roads,the mean values of vehicle flux and traffic noise(Leq) are different distinctly between working days and rest days.The noise at bus stations is more severe than the road near the stations.更多还原