共查询到19条相似文献,搜索用时 109 毫秒
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《声环境质量标准》、《工业企业厂界环境噪声排放标准》、《社会生活环境噪声排放标准》颁布执行是我国声环境保护工作上的一件大事。它完善了我国环境噪声标准体系,扩大了标准的适用范围,明确了标准的适用对象,理顺了相关标准之间的关系,同时对相关噪声监测方法进行了优化与完善。 相似文献
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由于建筑施工是能够产生很大噪声的生产建设活动,因此必然会给居民的工作与生活带来很多不便。目前噪声污染逐渐成为环境保护中的一个重要议题。本文对乌鲁木齐市建筑施工噪声污染趋势进行分析,并提出具有针对性的对策和措施。 相似文献
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兰州市交通噪声污染现状及评价 总被引:3,自引:1,他引:3
分析了兰州市交通噪声污染现状和危害,并运用模糊数学原理对兰州市交通噪声污染现状进行评价。得出兰州市总体交通噪声目前属于中度污染,在总结国内外城市交通噪声最新研究成果的基础上。提出了提高兰州市声环境质量的综合治理思路。 相似文献
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以北京市某典型区域作为研究对象,在收集大量相关资料与实测历史噪声数据的基础上,对研究区域内的声环境质量影响因素进行灰色关联度分析,并运用灰色理论建立GM(1,1)模型进行预测。结果表明,影响城市区域声环境质量因素从大到小的排序依次为:机动车辆﹥常住人口数量﹥平均车流量﹥地区生产总值﹥城市道路桥梁﹥基础设施投资﹥治理噪声环保投资;以研究区域内噪声污染实测历史数据建立的GM(1,1)模型精度符合要求标准,根据GM(1,1)模型预测北京市“十二五”期间声环境质量达标且有轻微下降趋势。 相似文献
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采用模糊聚类分析方法.对哈密市多年来城市环境噪声监测数据,进行了质量评价。结果表明,该市受到噪声中污染的Ⅳ级水平,提出了相应建议。 相似文献
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考虑异质人群不同声功能需求和时空分布,对异质人群交通噪声暴露特征进行评估。通过集记人口高斯分解和噪声预测,获取特征人群分布数据和交通噪声数据;基于特征人群年龄和声功能需求,标定各年龄段人群噪声响应函数并进行归一化处理,构建异质人群噪声响应曲线;构建交通噪声暴露评估模型,结合获取数据及噪声响应曲线进行噪声暴露评估。结果表明,3类声功能区中人群噪声暴露与年龄变量均呈现类抛物线趋势,40岁左右人群暴露影响较儿童和老人低59.9%左右。人均噪声暴露在夜间明显偏高,尤其在声功能需求较高的第1类声功能区,其人均噪声超标值比昼间高7 d B。特征人群的空间分布对噪声暴露影响显著,工作时段学校区域适学人群集中,其总噪声暴露风险为同等状况住宅区的1.2倍。综合考虑人群特征和时空分布等因素,可更科学地进行区域交通噪声污染评估。 相似文献
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Mohsen Aliabadi Rostam Golmohammadi Muharram Mansoorizadeh 《Environmental monitoring and assessment》2014,186(3):1855-1864
It is highly important to analyze the acoustic properties of workrooms in order to identify best noise control measures from the standpoint of noise exposure limits. Due to the fact that sound pressure is dependent upon environments, it cannot be a suitable parameter for determining the share of workroom acoustic characteristics in producing noise pollution. This paper aims to empirically analyze noise source characteristics and acoustic properties of noisy embroidery workrooms based on special parameters. In this regard, reverberation time as the special room acoustic parameter in 30 workrooms was measured based on ISO 3382-2. Sound power quantity of embroidery machines was also determined based on ISO 9614-3. Multiple linear regression was employed for predicting reverberation time based on acoustic features of the workrooms using MATLAB software. The results showed that the measured reverberation times in most of the workrooms were approximately within the ranges recommended by ISO 11690-1. Similarity between reverberation time values calculated by the Sabine formula and measured values was relatively poor (R 2?=?0.39). This can be due to the inaccurate estimation of the acoustic influence of furniture and formula preconditions. Therefore, this value cannot be considered representative of an actual acoustic room. However, the prediction performance of the regression method with root mean square error (RMSE)?=?0.23 s and R 2?=?0.69 is relatively acceptable. Because the sound power of the embroidery machines was relatively high, these sources get the highest priority when it comes to applying noise controls. Finally, an objective approach for the determination of the share of workroom acoustic characteristics in producing noise could facilitate the identification of cost-effective noise controls. 相似文献
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线性修正趋势分析法根据历年数据建立线性模型并进行修正,预测年度、季环境要素污染物变化情况,可应用于空气质量、水环境质量、噪声环境质量、污染源污染物排放等预警预测数据统计分析评价,为环境决策提供技术支持。本文通过实例论述了该方法在实际工作中的应用。 相似文献
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环境噪声污染纠纷仲裁监测 ,既要选择噪声源界外测点 ,又要选择其相邻方区域内测点 ,并按标准规定对测量值进行背景值修正。提出环境噪声污染应以所产生的环境噪声排放是否超过其所在区域环境噪声标准来判别。 相似文献
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Influence of Environmental Factors on the Evolution of Industrial Noise-Induced Hearing Loss 总被引:3,自引:0,他引:3
Abbate C Concetto G Fortunato M Brecciaroli R Tringali MA Beninato G D'Arrigo G Domenico G 《Environmental monitoring and assessment》2005,107(1-3):351-361
The aim of the study is to investigate how environmental factors, associated with exposure to industrial noise, affect the development of chronic noise-induced hearing loss.The studywas conducted on 186 male subjectsworking in two bottling plants, situated respectively in a small farming community, and in a medium-sized city with significant levels of noise pollution. Levels of occupational exposure were the same for the two groups.The subjects were selected by means of a preliminary medical examination, and exposed to tonal hearing tests and acoustic impedance tests. Statistical analysis was performed on hearing threshold values obtained at the frequencies of 500, 1000, 2000 and 4000 Hz.The comparison between the thresholds obtained in the two groups showed a statistically significant difference, especially at the frequency of 4000 Hz and for occupational exposure exceeding 17 yr. The results led us to conclude that environmental factors, and urban noise in particular, influence the onset and development of occupational acoustic trauma, and that those working in the country are significantly less affected than those in the city. Since occupational exposure was the same for both groups, their different responses must therefore be interpreted as due to differences in nonoccupational exposure, in turn dependent on different opportunities for rest from noise and different levels of exposure to noise pollution. 相似文献
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基于BP神经网络城市环境噪声预测及实证研究 总被引:1,自引:0,他引:1
城市噪声污染严重影响着人们的生活与工作,采用合适的方法对噪声污染进行评价并预测,进而提出有效的预防及治理措施是噪声污染防治的关键问题,文章利用灰色关联分析选取了影响环境噪声的主要因素,采用BP(Back propagation,BP)神经网络对北京市1994~2006年的环境噪声污染进行评价并预测,验证结果误差较小,说明基于灰色关联的BP神经网络能够有效地对城市环境噪声污染进行评价和预测。 相似文献
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以北京西部某典型城市区域声环境为研究对象,在采集2010年该区域声环境质量历史监测数据的基础上,经完善声环境质量相关属性数据及定量化后,采用聚类分析方法对该研究区域声环境质量的网格样本进行统计分类研究。结果表明:研究区域分为3类较适宜,结合相关类别声环境网格空间中其他属性的定量特征,探讨了区域声环境质量影响的主控因素,提出了针对不同类别改善区域声环境质量的措施建议。 相似文献