Web经预测,距离拟建线路外轨中心线30m处,昼、夜噪声等效声级均满足GB12525-90《铁路边界噪声限值及其测量方法》之昼间70dBA、夜间70dBA标准要求。 功能区存在不同程度的超标,根据敏感点规模及地形条件等因素考虑采取声屏障、隔声窗、实施搬迁等措施进行噪声 ... WebJun 13, 2006 · Emission standards and methods of measurement of railway noise on the boundary alongside the railway line (GB12525-90) is first introduced, followed by typical noise levels and spectra alongside main railway lines and the noise propagation pattern with distance (which have been monitored over decades). The primary sources of railway …
87(R) SB 1225 - Enrolled version - Bill Text
WebAug 1, 2024 · Emission standards and methods of measurement of railway noise on the boundary alongside the railway line (GB12525-90) is first introduced, followed by typical noise levels and spectra alongside ... WebGB1044137A GB12525/65A GB1252565A GB1044137A GB 1044137 A GB1044137 A GB 1044137A GB 12525/65 A GB12525/65 A GB 12525/65A GB 1252565 A GB1252565 A GB 1252565A GB 1044137 A GB1044137 A GB 1044137A Authority GB United Kingdom Prior art keywords car bodies paint objects march Prior art date 1964-03-31 Legal status (The … order bushes online
Noise pollution along Wuhan-Guangzhou express railway and …
WebSep 26, 2005 · 来源:GB12525-90 浏览: 评论:0 收藏 1主题内容与适用范围 本标准规定了城市铁路边界处铁路噪声的限值及其测量方法。 本标准适用对城市铁路边界噪声的评价。 2引用标准 GB3785声级计的电、声性能及测量方法 GB3222城市环境噪声测量方法 3名词术语 3.1铁路噪声railwaynoise 系指机车车辆运行中所产生的噪声。 3.2铁路边 … WebFeb 6, 2024 · GB12525.--90 附录A 测量记录表 (参考件) 铁路边界噪声测量记录表 年 月 日 编号 地点 时 分至 时 分 几股线路 车流密度 距轨面距离 m 测点与轨道间地面状况 测点仪器 等效声级 dB(A) 背景噪声声级 dB(A) 测量者 附加说明: 本标准由国家环境保护局提出。 WebGB12525/75A Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy … irc 509 a 1