隧道环境噪声调查与评价--以地质大学隧道为例

采用AWA6218型噪声统计分析仪对中国地质大学（武汉）地大隧道内的噪声进行了定点监测，每次连续监测10min。对监测结果进行了分析，隧道内噪声Leq值在71．1～80．6dB（A）之间变化，比距离入口5m处主道上的噪声平均高出5．85dB（A）。声音的反射叠加加重了隧道内的噪声污染，对隧道内噪声进行了质量评价。隧道内噪声明显超过了《城市区域环境噪声标准》（GB3096—93）的4类区域污染限值，为此提出了一些可行的防治措施。

Investigation and Assessment on Environmental Noise in the Tunnel:Taking CUG Tunnel for Example

AWA6218 noise statistical analyzer was used to monitor the noise at fixed points in the tunnel on China University of Geosciences(CUG) (Wuhan)campus,monitoring for 10 minutes each time.The results of the noise are analyzed and discussed in this paper.The values of L_(eq) in the tunnel change from 71.1 dB(A) to 80.6 dB(A),and it is 5.85 dB(A) higher on average than the noise on the main road 5 meters away from the entry of the tunnel.The reflection and superposition of the sound aggravate the noise pollution in the tunnel.Then the quality of the noise in the tunnel is assessed.The noise in the tunnel obviously exceeds the pollution limit of class 4 urban area of Environmental Noise Standard in the Urban Area(GB3096-93).At last,some feasible control measures are put forward in order to improve the existing acoustic environment and reduce pollution in CUG tunnel,and they are also good for controlling noise pollution in other tunnels.