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首页> 外文期刊>Nepal Journal of Science and Technology >Study on Aircraft Noise Around Tribhuvan International Airport, Kathmandu, Nepal
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Study on Aircraft Noise Around Tribhuvan International Airport, Kathmandu, Nepal

机译：尼泊尔加德满都特里布万国际机场周围飞机噪声的研究

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Present work was carried out to collect primary data from the field with the help of noise meter and thus spatial anddiurnal variation of background and aircraft noise level was analyzed. Seventeen sampling sites were chosennearby Tribhuwan International Airport (TIA) and air route of aircraft flyover. Noise measurements were carried outunder normal atmospheric environmental condition at temperature ranges from 25°C-30°C excluding rainy andwindy days. Among the sampling sites, the Equivalent Continuous Noise Level (LAeq) of background noise measuredmaximum at Balkumari (73.2 dBA) and minimum at Datidol (49.2 dBA). Noise meter was allowed to record aircraftnoise level when aircraft produced noise greater than background noise level and recorded until it reduced tobackground noise level. The maximum value of aircraft noise level, (LAeq) measured at Gothatar (101.5 dBA) whichlies north east from the TIA and at the same height as the airport ground and minimum at Datidol (63.5 dBA).Toanalyse the spatial variation of aircraft noise of different sampling sites, contour map was plotted with the help oforigin software. The LAeq of more than 60 percent sampling sites fall under the severe noise exposure class (> 75dBA) which causes substantial hearing loss. Implementation of noise control measurement and public awarenessare recommended to control adverse effect of noise pollution. DOI: http://dx.doi.org/10.3126jst.v15i1.12031 Nepal Journal of Science and Technology Vol. 15, No.1 (2014) 139-144
机译：目前正在进行的工作是借助噪声计从野外收集原始数据，从而分析了背景和飞机噪声水平的空间和昼夜变化。在特里布万国际机场（TIA）附近和飞机架空航线附近选择了17个采样点。噪声的测量是在正常大气环境条件下进行的，温度范围为25°C-30°C（不包括雨天和大风天）。在采样点中，背景噪声的等效连续噪声水平（LAeq）在Balkumari处最大（73.2 dBA），在Datidol处最小（49.2 dBA）。当飞机产生的噪音大于背景噪音水平时，允许噪音计记录飞机的噪音水平，并记录下来直至降低到背景噪音水平。飞机噪声级的最大值（LAeq）在距TIA东北且与机场地面相同高度的Gothatar（101.5 dBA）处测得，而在Datidol的最小值（63.5 dBA）处测得。在不同的采样地点，借助origin软件绘制等高线图。超过60％的采样点的LAeq属于严重的噪声暴露等级（> 75dBA），会导致大量的听力损失。建议实施噪声控制措施和公众意识，以控制噪声污染的不利影响。 DOI：http://dx.doi.org/10.3126jst.v15i1.12031尼泊尔科学与技术学报15（1）（2014）139-144

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